81results about How to "Play a throttling role" patented technology

The invention relates to a three-tube multi-split air-conditioning system oil return or defrosting control method and a system thereof. The method includes the following steps that step1, a port of refrigerating / heating switching device and an output pipe of an air-conditioning external unit system through a bypass pipe, the bypass pipe is provided with a bypass electromagnetic valve, and whether an air-conditioning system enters the oil return or defrosting state or not is detected in real time; step 2, when the air-conditioning system enters the oil return or defrosting state, an air-conditioning heat recycling device is switched into the refrigerating mode; step 3, an electromagnetic expansion valve of a throttling part of the air-conditioning heat recycling device is turned off, and the bypass electromagnetic valve is turned on; step 4, after the air-conditioning system receives the ending signal of oil return or defrosting, the bypass electromagnetic valve is turned off, and the electromagnetic expansion valve of the throttling part of the air-conditioning recycling device is turned on. According to the three-tube multi-split air-conditioning system oil return or defrosting control method and the system thereof, coolants do not pass through a hydraulic module system, and the situations that the hydraulic module system is frozen due to the coolants, and thus pipes are blocked are avoided on the premise of meeting the oil return and defrosting requirements.

The invention relates to a three-tube multi-split air-conditioning system oil return or defrosting control method and a system thereof. The method includes the following steps that step 1, the temperature T1 of outlet water of a water heat exchanger is detected in real time; step 2, when an air-conditioning system conducts oil return or defrosting, a heat recovery unit is switched to a refrigerating mode; step 3, when it is detected that the outlet water temperature T1 is larger than the low temperature T, an electromagnetic expansion valve of a throttling part is opened to the set fixed opening degree, and after the system receives the ending signal of oil return or defrosting, the heat recovery unit is switched to be the mode before oil return or defrosting; step 4, when it is detected that the outlet water temperature T1 is lower than the low temperature T, the electromagnetic expansion valve of the throttling part of the heat recycling device is turned off, a bypass electromagnetic valve is turned on, and after the system receives the ending signal of oil return or defrosting, the heat recycling device is switched into the mode before oil return or defrosting. By means of the three-tube multi-split air-conditioning system oil return or defrosting control method and the system thereof, the situation that water in the water heat exchanger is frozen under the temperature of oil return or defrosting, so that user use comfort and system operation reliability are affected is avoided.

The invention relates to a multi-split air conditioner control method and a system thereof. The method comprises the following steps that 1, the inlet water temperature T 1 and the outlet water temperature T2 of a water heat exchanger are detected in real time; 2, the T1 and the T2 are compared with the set first low temperature t1; when the inlet water temperature T1 or the outlet water temperature T2 is smaller than or equal to the first low-temperature t1, the operation state of an air conditioner system is detected; 3, when the condition that the air conditioner system is in an off state is detected, a water pump connected with the water heat exchanger and a water tank is started; 4, when the condition that the air conditioner system is in an operation state is detected, the air conditioner system is automatically switched into a heating standby mode, and a throttling component of a heat recovering device of the air conditioner system is opened. The method and the system have the advantages that the influence on the operation reliability of the system since the water in the water heat exchanger of the heat recovery device is frozen under the low-temperature condition can be effectively prevented.

The invention belongs to fire-fighting equipment, and relates to a quick opening hydrant which mainly achieves quick opening. The quick opening hydrant comprises a body, a valve body and a base, a valve plate in seal fit with a medium circulation port end face is arranged in the valve body, and a valve stem connected with the valve plate and capable of moving axially extends out of the body and is connected with a rotating structure arranged on the body. The quick opening hydrant is characterized in that a base body is connected between the body and the valve body through fasteners, the rotating structure comprises a ball which is arranged in a groove at the top end of the valve stem and partially protrudes over the groove, a cam is arranged in a cam chamber arranged at the upper end of the body and tightly pressed by a cover plate, a cam end shaft extends from a through hole in the cover plate, and a working surface of the cam keeps in contact with the ball constantly. The hydrant is capable of achieving quick opening and has functions of pressure regulating and pressure stabilizing, antifreezing and self closing after breakage.

The invention provides a motor cooling structure, an air conditioner, and a motor cooling method. The motor cooling structure includes a motor, a refrigerant pipe, an electromagnetic valve, an exhaust parameter sensor, and a controller. the refrigerant pipe is arranged on the motor, the first end of the refrigerant pipe is connected with an outlet main pipeline of a condenser, the second end of the refrigerant pipe is connected with a gas-liquid separator, the electromagnetic valve controls the opening and closing of the refrigerant pipe, when the refrigerant pipe is opened, refrigerant of the air conditioner enters into the refrigerant pipe via the first end through the outlet main pipeline and flows into the gas-liquid separator via the second end after passing through the motor, the exhaust parameter sensor detects the exhaust parameters of a compressor, and the controller adjusts the work state of the electromagnetic valve based on the exhaust parameters detected by the exhaust parameter sensor. According to the invention, the exhaust parameters of the compressor can be set as the basis for determining whether the electromagnetic valve should be opened and closed, so that the control of the motor cooling is more flexible and practical, and the motor can be cooled by the refrigerant flown out of the condenser when the temperature of the motor is too high.

The invention relates to a distributor and a plate-fin heat exchanger with the same. The distributor comprises a distributor shell with an upper opening and a lower opening; a rectangular framework is arranged at the bottom of the distributor shell; a plurality of partition boards are vertically inserted into the distributor shell at intervals; the rectangular framework is divided into a plurality of air-phase channels through the partition boards; the distributor further comprises a liquid-phase channel; the liquid-phase channel is a rectangular pipe, is transversely arranged, and passes through the partition boards; liquid-phase inlets are formed in the distributor shell corresponding to the both ends of the liquid-phase channel; a liquid-phase inlet sealing head is arranged at the outer side of each liquid-phase inlet; a baffle partition part is arranged at the middle part inside the liquid-phase channel; a liquid outlet is formed at the top of the liquid channel between two adjacent partition boards; and a gas-liquid mixing channel is formed between the two partition boards above each liquid outlet. With the adoption of the distributor provided by the invention, the requirements of gas-liquid distribution and normal working in an offshore shaking condition can be met. The distributor can be widely applied to liquefied natural gas FPSO (Floating Production Storage and Offloading) in the offshore shaking condition.

The invention belongs to the technical field of rice transplanters, and particularly relates to a multifunctional valve used for controlling a seedling table of a rice transplanter to rise and fall. The multifunctional valve used for controlling the seedling table of the rice transplanter to rise and fall comprises a reversing valve, a shuttle valve, a hydraulic-control one-way valve, a stop valve, a one-way throttling valve and a lifting oil cylinder, wherein the reversing valve, the shuttle valve, the hydraulic-control one-way valve, the stop valve, the one-way throttling valve and the lifting oil cylinder are connected in sequence. The reversing valve is a five-position and four-way reversing valve. A first oil outlet of the reversing valve communicates with a first oil port of the shuttle valve and a main oil path of the hydraulic-control one-way valve. A second oil outlet of the reversing valve communicates with a second oil port of the shuttle valve and an auxiliary oil port of the hydraulic-control one-way valve. An unloading valve is connected to an oil outlet of the shuttle valve. A throttling pressure-relief hole communicating with the auxiliary oil port of the hydraulic-control one-way valve is formed in the hydraulic-control one-way valve and is connected with an oil tank. The reversing valve has a rising position, a throttling rising position, a middle position, athrottling falling position and a falling position. An oil outlet of the one-way throttling valve communicates with a cavity of the lifting oil cylinder, and the other cavity of the lifting oil cylinder communicates with the oil tank. The reversing motion of the reversing valve controls the lifting oil cylinder to rise and fall.

The invention discloses a cooling system of an air conditioner, the air conditioner and a control method. The cooling system of the air conditioner includes a to-be-cooled object, a cooling pipeline,a condenser, and an air returning part, wherein the cooling pipeline is used for cooling the to-be-cooled object, the condenser communicates with an inlet of the cooling pipeline, and the air returning part communicates with an outlet of the cooling pipeline; and the cooling pipeline includes an upper cooling pipeline for cooling the upper part of the to-be-cooled object and a lower cooling pipeline for cooling the lower part of the to-be-cooled object, and the upper cooling pipeline and the lower cooling pipeline are arranged in parallel connection. The cooling system of the air conditioner and the air conditioner have the advantages of being uniform in upper and lower cooling, and wide in adjusting range, the system energy efficiency is improved and the like.

The invention provides an air conditioner and a short tube throttle valve thereof. The short tube throttle valve comprises a valve body, a first baffle block, a valve seat, a second baffle block, a primary valve core and a secondary valve core, wherein the valve body is provided with a flow channel; the first baffle block, the valve seat and the second baffle block are all fixedly connected with the inner wall of the valve body in a sealing manner; the first baffle block is provided with a first channel; the second baffle block is provided with a second channel; the primary valve core is arranged in the valve seat in a sealing and sleeving manner and can slide axially along the flow channel; the primary valve core is provided with a primary throttle channel which is communicated with the second channel, and an accommodating cavity which is communicated with the primary throttle channel; the two ends of the primary valve core can be respectively connected with the end surface of the first baffle block and the end surface of the second baffle block in a sealing manner; the secondary valve core is provided with a secondary throttle channel and a flow division through groove, and can slide axially along the flow channel, so that the primary throttle channel is communicated with the secondary throttle channel through the first channel when the secondary valve core is pressed against the accommodating cavity, and the primary throttle channel is communicated with the flow division through groove through the first channel when the secondary valve core is separated from the accommodating cavity. According to the short tube throttle valve, bidirectional throttling is realized, and the short tube throttle valve can be applied to a cold-warm air conditioner.

The invention discloses an oil cylinder driving mechanism with a buffer function for a clamp, comprising a clamp body, wherein an oil cylinder is arranged on the clamp body; a left end cover is arranged at one end of the oil cylinder; a right end cover is arranged at the other end of the oil cylinder; a left cavity is arranged at one end of a rack piston matched with the oil cylinder and is communicated with a left oil port on the left end cover; a right cavity is arranged at the other end of the rack piston and is communicated with a right oil port on the right end cover; a left end cover inner cavity is arranged on the inner side of the left end cover; the left end of the rack piston is connected with a plunger piston which is matched with the left end cover inner cavity; the left cavity is communicated with the left oil port through the left end cover inner cavity; a one-way valve is arranged between the left oil port and the left cavity on the left end cover; a valve core hole is formed in the left end cover by processing; a valve core is connected with an internal thread of the valve core hole; a communicating hole is formed in the left end cover by processing and is communicated with the left cavity, the valve core hole and the left end cover inner cavity; the internal thread of the valve core hole is connected with a fastening bolt; and a screed plug with a sealing ringis arranged at the port of the valve core hole. The rack piston is buffered when approaching to the left end in the work process and the phenomenon that the tail end is impacted is overcome; and the oil cylinder driving mechanism has better stable performance.

The invention relates to a bilateral sealing stop valve which comprises a valve body and valve elements. The stop valve adopts the technical essentials that a throttling orifice is arranged on the longitudinal central line of the valve body, and the valve elements are arranged on the transverse central line of the valve body; the valve elements are symmetrically arranged in valve element holes at two sides of the throttling orifice; the valve element hole at the front end of a valve element sealing stop is internally provided with a sealing assembly; a positioning body and a nut are sleeved outside the valve elements at two ends of the valve element holes and fixed on the valve body through a fixing press cap; a hand wheel which is clamped by a flat key and fixed by a jam nut is sleeved outside the nut, and a valve element gear is arranged outside the nut between the hand wheel and the fixing press cap; the valve body is connected with a bearing block through a bolt, and the bearing block is internally provided with a slide bearing; a transmission shaft is fixed on the bearing block through the slide bearing; and two ends of the transmission shaft are provided with a transmission shaft gear engaged with the valve element gear. The invention has the advantages of flexible and compact structure, exact and accurate sealing, good sealing quality and low manufacturing cost and is an important improvement for the safety performance of a float type liquid level metering system of a pressure container.

A parallel flow heat exchanger and a room air conditioner, the parallel flow heat exchanger includes a flat tube arranged between an input header and an output header, the flat tube is provided with fins, and one end of the input refrigerant tube is connected to the input The headers are connected, and one end of the output refrigerant pipe is connected with the output header. More than one first positioning hole is arranged on the side wall of the input header, and one end of the input refrigerant pipe is inserted into the first positioning hole. One end of the input refrigerant pipe is closed, and one end of the input refrigerant pipe is provided with more than one first small hole communicating with the inside of the input header; and / or, the side wall of the output header is provided with more than one first small hole Two positioning holes, one end of the output refrigerant pipe is inserted into the second positioning hole, and one end of the output refrigerant pipe is closed. The invention has the characteristics of simple and reasonable structure, flexible operation, small flow resistance, uniform refrigerant distribution and wide application range.

The invention discloses a cylinder head gasket throttle assembly. The cylinder head gasket throttle assembly comprises water holes, a notch which is communicated with the corresponding water hole is formed in the edge of every water hole, and the inside of every notch is connected with a clamping hook bar; the cylinder head gasket throttle assembly further comprises throttle pieces which are in clearance fit with the insides of the water holes, a throttle hole with a diameter smaller than that of the water hole is formed in every throttle piece, and every throttle piece is connected with a clamping hook which is matched with the notch and can be clamped onto the corresponding clamping hook bar. The throttle piece which is in clearance fit with the inside of the corresponding water hole can throttle cooling water inside a water jacket to reduce the water flow entering the cylinder head from a cylinder body. The cylinder head gasket throttle assembly can adjust the size of the throttle holes on the throttle pieces according to water jackets of different positions of an engine, and accordingly enables cooling water capacities of all the water jacket to tend to be equal, guarantees that the engine is cooled evenly, and prolongs the service life of the engine. The invention also discloses a cylinder head gasket comprising the cylinder head gasket throttle assembly.

The invention discloses an engine. The engine comprises a cylinder cover, a driving part mounted on the cylinder cover, and a flow deflector (21) connected with the driving part, wherein an air inlet passage (22) is arranged on the cylinder cover; an air inlet valve (24) is arranged at the tail end of the air inlet passage (22); the flow deflector (21) is positioned in the air inlet passage (22), and has a flow deflecting course and a return course under the effect of the driving part; the flow deflecting course points to the middle space of the air inlet passage (22) from the inner wall of the air inlet passage (22); the return course points to the inner wall of the air inlet passage (22) from the middle space of the air inlet passage (22). The air scavenging in a combustion chamber of the engine is sufficient, so that the power of the engine is improved, and the oil consumption of the engine is reduced. The invention further discloses an automobile.

The invention discloses a water purifier waterway system capable of backwashing. The system comprises a composite filter element, wherein a first filter module is arranged in a first accommodating cavity of the composite filter element, and a second filter module and an air bag are arranged in a second accommodating cavity of the composite filter element; a primary filtering branch which is connected to a primary filtering water outlet and the water inlet end of an RO membrane filter element; a secondary filtering branch which is connected to the water outlet end of the RO membrane filter element and a pure water inlet; a water outlet pipe which is connected to a purified water outlet and a water taking device; a water inlet valve which is mounted on the primary filtering branch; a supercharging device which is mounted on the primary filtering branch; and a reverse osmosis check valve which is arranged on the secondary filtering branch; wherein the reverse osmosis check valve is used for forward conduction and reverse throttling; the air bag is used for providing pressure for the second accommodating cavity when the water taking device is closed so that water in the second accommodating cavity reversely flows into the RO membrane filter element through the secondary filtering branch, and the RO membrane filter element is flushed. According to the system, the RO membrane can bebackwashed in time so that the problem that the TDS value of first-section discharged water is relatively high after long-time standby is avoided, and the service life of the RO membrane filter element is effectively prolonged.

The invention relates to a three-tube heating recycling air-conditioning system control method and an air-conditioning system. The three-tube heating recycling air-conditioning system control method includes the following steps that step 1, the inlet water temperature T1 and the outlet water temperature T2 of a water heat exchanger are detected in real time; step 2, the T1 and the T2 are compared with a set first low temperature t1, when the inlet water temperature T1 or the outlet water temperature T2 is smaller than or equal to the first low temperature t1, air-conditioning system heating is stated, and water in the water heat exchanger is heated; step 3, when it is detected the inlet water temperature T1 or the outlet water temperature T2 reaches the set high temperature t2, air-conditioning system heating is ended, and the air-conditioning system restores to the previous standby state. By means of the three-tube heating recycling air-conditioning system control method and the air-conditioning system, the situation that water in the water heat exchanger of a heat recycling device is frozen under the low temperature, and thus system operation reliability is affected can be effectively prevented.

A high-temperature high-pressure oblique stop valve comprises a handle, a worm, a worm nut, a rotating assembly, a valve body, a stuffing box, a valve rod connected with the worm, a valve flap and a valve seat and is characterized in that a flow stabilizing sleeve is fixed above the valve seat. The stuffing box is disposed at the top of the flow stabilizing sleeve. A support is disposed between the stuffing box and the valve body. An 'O'-shaped seal ring is disposed on the radial contact face, in contact with the support, of the stuffing box. Stuffing is disposed in the stuffing box and provided with a stuffing pad at the bottom. The valve rod extends into the flow stabilizing sleeve and fixedly connected with the valve flap. Hard alloy is welded on the seal contact face of each of the valve flap and the valve seat. The high-temperature high-pressure oblique stop valve is good in sealing performance, capable of throttling, flexible to open, easy to mount and maintain and low in production cost.

The invention belongs to the field of pipe fittings, and particularly relates to a pressure sensing throttling valve. The pressure sensing throttling valve comprises a valve body and is characterized by comprising a first liquid inlet, a second liquid inlet, a first liquid outlet and a second liquid outlet, and further comprising a push-pull-type throttling portion located on the valve body, wherein the first liquid inlet and the second liquid inlet are located at one end of the valve body, and the first liquid outlet and the second liquid outlet are located at the other end of the valve body; and the throttling portion penetrates the valve body. The pressure sensing throttling valve is simple in structure, capable of controlling the throttling degree and good in throttling effect and has the certain solid filtering function.

The invention provides a cold plate and a refrigerating system. The cold plate comprises an inlet pipe, an outlet pipe and a multi-layer entity formed by combining plates based on a multi-layer thin plate, wherein the multi-layer entity sequentially comprises at least one upper cover plate piece, at least one upper chamber plate piece, at least one middle plate piece, at least one lower chamber plate piece and at least one heat conduction plate piece from top to bottom, the upper chamber plate piece forms a hollow flow storage chamber, the middle plate piece forms a slender throttling groove channel, and the lower chamber plate piece forms a hollow evaporation chamber. The refrigerating system comprises the cold plate, a compressor, a condenser, a condensing fan, a connecting pipeline, a refrigerant, a clamping device and the like. When the compressor works, the high-pressure liquid refrigerant enters a liquid storage chamber through the inlet pipe, is throttled and depressurized through the throttling groove channel, generates the spray jet flow in the evaporation chamber, impacts the heat conduction plate piece and takes away heat of a heating element in contact with a lower surface of the heat conduction plate piece. The cold plate is advantaged in that the cold plate is compact in structure and high in heat flux density, and a heating element can be cooled to be below the environment temperature.

The invention provides an LNG automobile chair system. Two sets of air inlet / outlet pipelines are respectively arranged on a cushion and a backrest in parallel connection, the two sets of pipelines are connected with an LNG circulating system through an integration valve and a pipeline, and the LNG circulating system is in parallel connection with a water circulating system of an engine through a pipeline. LNG gas in the LNG circulating system is connected to the engine through an exchanger, an outer pipe of the exchanger is in serial connection with an evaporator, the outside of the evaporator is respectively in butt joint with the two sets of pipelines, the two sets of pipelines are in S design and embedded in the cushion and the backrest, a circulating pump is in serial connection to the pipeline between the exchanger and the evaporator, an electromagnetic valve is in serial connection to a pipeline of the water circulating system of the engine, a valve is in serial connection to a water inlet pipeline outside the integration valve, and temperature sensors are arranged on a chair and the backrest and connected to a control system. The LNG automobile chair system solves the problem of energy conversion utilization of an LNG automobile, achieves the purpose of cold-hot function conversion of the cushion and the backrest, achieves environmental friendliness and is practical and economical. Furthermore, the self power of the automobile is not consumed when the system works.

The invention discloses a three-way non-return speed control valve. The three-way non-return speed control valve comprises a valve body, the valve body is provided with an A opening, a T opening and aP opening, a pressure compensation valve element is arranged in the valve body, the pressure compensation valve element is provided with a first through-flow hole, the upper portion of the pressure compensation valve element is provided with a throttle valve pocket, the throttle valve pocket is provided with an orifice, a second through-flow hole and a third through-flow hole, and a control spring is arranged between the throttle valve pocket and the pressure compensation valve element; the lower portion of the pressure compensation valve element is provided with a bush, a spring seat and a one-way spring, a through-flow cavity is formed between the throttle valve pocket and the valve body, the orifice is communicated with the A opening through the through-flow cavity, a control cavity isformed between the pressure compensation valve element, the spring seat, the bush and the inner wall of the valve body, and the control cavity is communicated with the P opening. The three-way non-return speed control valve has the advantages that the structure is simple and compact, the volume is small, the function of one-way speed regulation can be completed, and the pressure compensation cankeep the flow constant.

The invention discloses a single-stage porous throttling orifice plate and a throttling device and solves the problems of loud noise and pipeline vibration of the throttling orifice plate in the prior art. The beneficial effects of reducing pipeline noise and vibration and conveniently manufacturing on site can be achieved. The specific scheme is as follows: the single-stage porous throttling orifice plate comprises a plate body, wherein the plate body has set thickness; the size of the plate body is matched with the size of a pipeline; the plate body is provided with at least two throttling holes; a plurality of throttling holes are annularly distributed by taking the central axis of the plate body as the center; or one of the plurality of throttling holes is formed in the center of the plate body.

The invention discloses a production method of floors capable of being quickly installed in a side sliding mode, and belongs to the technical field of floor production. The production method includesthe following steps that step 1, floor blanks are sorted; step 2, the floor blanks are subjected to curing; step 3, the floor blanks are subjected to sanding; step 4, the floor blanks are subjected tothickness setting; step 5, the floor blanks are subjected to surface treatment; step 6, the floor blanks are subjected to length setting and molding processing; step 7, the floor blanks are sprayed with anti-cracking oil; step 8, the floor blanks are plastic-packaged; step 9, the floor blanks are painted with back paint; and step 10, the floor blanks are painted or painted with vegetable oil. After injection molding, lock catch frames are hidden under bosses of the floor blanks, and lock catches are high in dimensional accuracy and firmly assembled.

The invention discloses a production method of a rapid sideslip mounting floor, and belongs to the technical field of floor production. The manufacturing method comprises the following steps that stepone, floor blanks are sorted; step two, the floor blanks are conserved; step three, the floor blanks are sanded; step four, the floor blanks are subjected to thickness fixing; step five, the surfacesof the floor blanks are treated; step six, the floor blanks are subjected to fixed-length forming processing; step seven, anti-cracking oil is sprayed to the floor blanks; step eight, the floor blanks are subjected to plastic packaging; step nine, the floor blanks are coated with back paint; and step ten, the floor blanks are coated with oil paint or plant oil. After injection molding, a lock catch frame is hidden under a boss of each floor blank, the precision of the size of a lock catch is high, and the assembly is firm.

The invention discloses an application method of a negative pressure control system. The negative pressure control system and the application method thereof are included. The negative pressure controlsystem comprises a negative pressure sensor, an air valve, an air valve controller, a variable frequency fan and a controller. The negative pressure sensor is used for detecting the negative pressurevalue inside an air supply system pipe. The air valve is arranged in the pipe and plays a throttling role. The air valve controller is used for adjusting the open degree of the air valve. The variable frequency fan is arranged at one end of the pipe and used for forming the negative pressure in the pipe. A signal input end of the controller is connected with the negative pressure sensor, and a signal output end of the controller is connected with the variable frequency fan and the air valve controller. By means of the negative pressure control system, the negative pressure inside the system can maintain consistent basically, and thus consistency of product quality is guaranteed; high-frequency working duration of the fan is shortened; the service life of the fan is prolonged; and energy consumption is lowered.

The invention discloses an inserting installation type one-way speed regulating valve. A valve body is included; the lower end of the valve body is provided with a screw plug; the center of the screwplug is provided with a port P; the side wall of the valve body is provided with a port A and a port T; a pressure compensating valve element is arranged in the valve body; the side wall of the lowerportion of the pressure compensating valve element is provided with a through hole; the pressure compensating valve element slides upwards, and can control the opening degree of the port A and communicate the port P with the port T through the through hole; the center of the pressure compensating valve element is provided with a one-way valve element; the center of the one-way valve element is provided with a through flow hole; a first spring is arranged between the one-way valve element and the screw plug; a bush is arranged above the pressure compensating valve element, and is provided witha through flow groove communicated with a port B; a throttling valve sleeve is arranged in the upper portion of the valve body; the lower end of the throttling valve sleeve is provided with a valve port matched with the one-way valve element; a through flow cavity is formed between the outer wall of the throttling valve sleeve and the inner wall of the valve body; the throttling valve sleeve is provided with a throttling groove communicated with the through flow cavity; and a second spring is arranged between the bush and the throttling valve sleeve. The inserting installation type one-way speed regulating valve has the beneficial effects of being simple and compact in structure and small in volume, and flow can be kept constant by means of pressure compensating.

The invention discloses a mixing device for feed for raising chicken and ducks. The mixing device comprises a bottom plate, wherein the top part of the bottom plate is fixedly connected with a shell;a first opening is formed in the right side of the top part of the shell; a stirring tank is arranged in an inner cavity of the shell; pulleys are fixedly arranged at four corners of the bottom part of the stirring tank; the pulleys are connected with the bottom part of the inner cavity of the shell in a sliding way; the left side of the top part of the stirring tank is communicated with a feedingcabin; the left side of the top part of the stirring tank is communicated with a feeding hopper. According to the mixing device disclosed by the invention, through the arrangement and the matching use of the bottom plate, the shell, the first opening, the stirring tank, the pulleys, the feeding cabin, the feeding hopper, a transmission mechanism, a gear rack, a transmission box, a framework, a first motor, a stirring rod and stirring blades, the problem that sufficient stirring cannot be carried out by an existing feed stirrer is solved; the mixing device for the feed for raising the chickenand the ducks, disclosed by the invention, has the advantage that feed stirring is uniform, and is convenient to digest feed by animals, and the practicability of a stirrer is improved.

The invention discloses a hydraulic type high-pressure water electrostatic spraying nozzle. The hydraulic type high-pressure water electrostatic spraying nozzle comprises a hydraulic type spraying nozzle base, a mist spraying component and an electrically-charged component, wherein the mist spraying component and the electrically-charged component are arranged on the hydraulic type spraying nozzle base; the mist spraying component is a spraying nozzle piece arranged on the water outlet end of the hydraulic type spraying nozzle base, the spraying nozzle piece is fixed to the water outlet end of the hydraulic type spraying nozzle base through a spraying nozzle cap, and mist spraying small holes are formed in the spraying nozzle piece; the electrically-charged component is an annular induction electrode arranged around the outer side of the spraying nozzle piece, and the annular induction electrode is connected with a high-pressure electrostatic generator through an electrostatic high-pressure line; and the water inlet end of the hydraulic type spraying nozzle base is communicated with a spraying rod connected with a water source through a rotating water core. The hydraulic type high-pressure water electrostatic spraying nozzle is simple in structure, ingenious in design, and capable of adjusting mist spraying pressure and electrostatic pressure at the same time, the atomization effect reaches the optimal state, sprayed-out fog drops can evenly cover the surface of a crop, the fog drop penetrability is improved, pesticide losing can be effectively subject to speed reduction, the utilization rate is improved, and therefore the effect of protecting environment is achieved.

The invention provides a heat exchanger module, a heat exchanger set, an air conditioning system and a use control method, relates to the technical field of air conditioners, and solves the technical problems that in the prior art, when refrigeration dehumidification is adopted for air conditioner dehumidification, the indoor temperature is relatively likely to be excessively reduced, and discomfort is caused. The heat exchanger module comprises more than two heat exchange units which are connected through a pipeline, a valve body and a throttling device are arranged on the pipeline, the heat exchange units are connected in parallel when the heat exchanger module is used for refrigerating, when the heat exchanger module is used for heating, the heat exchange units are connected in series, and the throttling device is adjusted to be in a throttling state in a heating mode, so that the heat exchanger module has heating and dehumidifying functions. When the heat exchanger module is used as an indoor heat exchanger, the heat exchanger module has three modes of efficient refrigeration, efficient heating and dehumidification and heat regeneration.

The invention relates to a throttling device for a high pressure water-feeding pump of an industrial boiler. The throttling device for the high pressure water-feeding pump of the industrial boiler is characterized by comprising a throttling straight pipe, a throttling nozzle installed on an end face of the throttling straight pipe, and a plurality of throttling orifice plates installed in the throttling straight pipe with a 45-degree angle or a 90-degree angle in a staggered mode. The throttling device for the high pressure water-feeding pump of the industrial boiler is installed in front of a first recycling door of a boiler water-feeding pump outlet pipeline, so that output force of a boiler water-feeding pump can be effectively improved, the water amount can be well throttled, water-feeding pressure needed by the boiler is met, and stability of water feeding of the boiler is guaranteed. The operation number of the first recycling door and a second recycling door when the boiler is normally adjusted is reduced, and safe and economical operation of a boiler unit is improved.