48results about How to "Prevent running water" patented technology

The invention discloses a universal rotating spray head of a high-pressure and high-temperature cleaning machine, comprising a spray gun connecting head and a spray head body, wherein, an inlet opening is arranged in the spray gun connecting head, and a spray nozzle is arranged in the spray head body. The invention is characterized in that the spray nozzle of the spray head body comprises an axial straight spray nozzle, a radial straight spray nozzle and an oblique spray nozzle between the axial straight spray nozzle and the radial straight spray nozzle, wherein, the spray head body is connected with a rotary rod, and the spray gun connecting head is connected with one end of a rotary cushion by a rotary screw barrel; a swinging chamber is arranged in the rotary cushion, and the other end of the rotary cushion is connected with a rotary fixed cap; the rotary fixed cap is provided with a connection hole and a flaring; the rotary rod is provided with a ball joint, a spherical surface inlet opening and an oblique tail part extending into the swinging chamber, and the ball joint is matched with the flaring; an elastomer is arranged on the oblique tail part, and the elastomer is in contact with the inner wall of the swinging chamber.

The invention relates to a method for initiating encryption during call establishing procedure and a wireless network controller. The method includes receiving a message of that a call has been established; determining whether the present time is longer than the encryption activating time provided in the message; and if yes, initiating encryption using the exceed frame number in the message and the present connecting frame number at network side as the encryption parameters. Synchronization of encryption parameters of RNC and the encryption terminal is ensured, therefore flow noise of audio is prevented and the audio quality is further ensured. The wireless network controller includes a message receiving module, a time determining module and an encryption initiating module to ensure synchronization of encryption parameters of RNC and the encryption terminal, therefore flow noise of audio is prevented and the audio quality is further ensured.

The invention relates to foundation treatment in a collapsed loess area, in particular to a method for immersing a collapsed loess site, which is characterized in that a circle of underground piling wall is formed in a proposed site or at a plant area boundary to form a bucket-shaped water-proof curtain; immersion sag removal is performed within the containment range of the water-proof curtain to prevent immersion water in the site from permeating out of the site, thus, water runout and piercing are effectively prevented, and the water consumption is greatly reduced. As the water runout phenomenon cannot happen, the water can be pumped after a soil body is immersed and the sedimentation is stable, thus, the compaction process is accelerated, and the time from immersion to sedimentation stabilization is greatly shortened; the sedimentation range is effectively controlled, thereby, the adverse effects on existing buildings and farmlands at the periphery of the site are eliminated, and simultaneously, the possibility that the immersion soil body landslides is greatly reduced. When construction is performed, the underground piling wall can also be used as a foundation pit slope protection facility and a plant area wall foundation.

The invention discloses an air chamber jigger and a coal preparation method thereof. The air chamber jigger comprises an air chamber formed by a sealing container with changeable volume and shape; the air chamber is arranged below a screen plate and is connected with a compressed air source by an air inlet valve and with atmospheric air by an exhaust valve; and the air chamber is made of impermeable materials. The coal preparation method of the air chamber jigger comprises the following steps: 1, opening the air inlet valve and closing the exhaust valve; 2, filling the compressed air source in the air chamber by the air inlet valve; 3, swelling the air chamber and raising the water level; 4, closing the air inlet valve and opening the exhaust valve; and 5, under the pressure of water, squeezing the air in the air chamber out and discharged the air to the atmosphere, flattening the air chamber, and dropping the water level. The air chamber jigger and the coal preparation method can avoid the water leakage, and the air discharged from an air outlet pipe is not carried with slime water, thereby improving the stability of the equipment and reducing the environmental pollution; moreover, the even pulsation can be achieved in the width direction of the jigger, and a large-scaled jigger is realized.

The invention discloses a nuclear island temporary pit automatic drainage system and drainage method. The system comprises a temporary pit used for accommodating wastewater in a system, a float-type liquidometer used for collecting water-level signals at different heights in the temporary pit, a submersible pump used for pumping out water in the temporary pit, an electronic control unit which is used for receiving the water-level signals at different heights in the temporary pit, performing judgment according to different water levels, sending out start and stop signals of the submersible pump and automatically opening or closing each corresponding submersible pump, and a pipeline assembly which is used for gathering water in the pit and draining out of a safe workshop. The float-type liquidometer and the electronic control unit are arranged on the temporary pit to solve the problem that the submersible pump cannot be started or stopped in time due to not timely response in the prior art, and the nuclear island temporary pit automatic drainage system and drainage method can be used for effectively improving the drainage efficiency and drainage quality, reducing the equipment damage rate, improving the safety coefficient and reducing the use cost.

The invention discloses a processing method of scallion, which comprises the following steps that: prewashing; first-time dipping sterilization; fine washing; second-time dipping sterilization; segmentizing; third-time dipping sterilization; pre-cooling in ice water; and quick freeze, so a finished product is obtained. Due to adoption of the processing method, the hygiene and safety problem of the scallion can be well solved, thorough removal of impurities, thorough decontamination and thorough removal of residual sterilizing agent of raw materials can be guaranteed; and pollution of microorganisms on the scallion can be maximally reduced, and the taste of the scallion can be maximally maintained.

The invention discloses a faucet assembly for a washing machine. The faucet assembly comprises a water inlet pipe joint, a water way connecting piece and a water stop piston. One end of the water inlet pipe joint is connected with a washing machine water inlet pipe. One end of the water way connecting piece is connected to a water source, and the other end of the water way connecting piece is connected to the other end of the water inlet pipe joint. A water circulating way is formed between the two ends of the water way connecting piece. A water flow shrink and stop portion is arranged in the water circulating way. The water stop piston penetrates the shrink and stop portion and is arranged in the water circulating way. The diameter of a piston head of the water stop piston is larger than that of the shrink and stop portion. A piston rod extends out of the water way connecting piece. A water channel is arranged between the piston rod and the shrink and stop portion. An abutting portion is arranged on the inner wall of the water inlet pipe joint. The abutting portion abuts against the piston rod and moves in the direction in which the piston head is separated from the shrink and stop portion. The water stop piston moves in the direction in which the piston head is close to the shrink and stop portion only depending on water pressure in the water circulating way without depending on other external force. The faucet assembly for the washing machine is simple in structure, and water supply can be stopped automatically after the water inlet pipe of the washing machine falls off.

The invention discloses a high frequency vibrating screen which comprises a screen box, a screen plate, a box type vibration exciter and a driving system. The screen box comprises two side plates, a plurality of transverse beams and a driving beam, the two side plates are installed on a support through springs, the lower edges of the two side plates are connected through the multiple parallel transverse beams, the upper portions of the middles of the two side plates are connected through the driving beam, the box type vibration exciter is installed on the driving beam and is connected with thedriving system, the screen plate is fixed to the upper portions of the transverse beams and is formed by butt joint of a slope screen plate with a positive inclined angle and a step-shaped screen plate with a negative inclined angle, the slope screen plate is located on the back portion of the step-shaped screen plate, and a feeding baffle is arranged at the back end of the slope screen plate. According to the high frequency vibrating screen, the staged type screen plate formed by the slope screen plate and the step-shaped screen plate is adopted, the forced synchronization type box type vibration exciter is used as a vibration exciting source, coal slime scattering and layering and further dewatering can be promoted, material stacking and water running can be effectively prevented, the dewatering effect of the slime water is improved, the fault rate is low, and the screen machine running reliability is greatly improved.

The invention discloses a temperature compensation device for a solar ground source heat pump. The temperature compensation device comprises a ground. A solar power supply unit is mounted on the ground. A condenser is mounted on the right side of the solar power supply unit on the ground. A first water outlet pipe is mounted on the right side of the condenser. A second water outlet pipe is mountedat the bottom of the first water outlet pipe. A first electromagnetic valve is mounted between the first water outlet pipe and the second water outlet pipe. A pair of second electromagnetic valves same in structure is mounted between the first water outlet pipe and the second water outlet pipe and the condenser. The temperature compensation device disclosed by the invention has the beneficial effects that a heating structure can be charged through a solar charging structure; as the temperature compensation device is charged by solar energy, the temperature compensation device not only is environment-friendly and stable, but also does not affect the heat compensation ability as a result of power failure regionally; through the heating structure, water in a spiral water pipe is heated to different extents, so that the device can balance soil energy and prevent water and soil loss, and therefore, the environmental damage is avoided.

The invention provides an anti-flooding automatic water cut-off valve, which relates to the technical field related to the hardware valves, and solves the technical problem of flooding caused by the fact that a faucet is forgotten to be closed when a single family or a group resides in the absence of people in the prior art. The anti-flooding automatic water cut-off valve comprises a shell, an electric appliance device, a first sensing device and a control device, wherein the electric appliance device comprises an electromagnetic switch, a floater chamber with a water inlet is formed in the shell, and a first hollow buoy is mounted in the floater chamber; the first sensing device is connected with the electromagnetic switch, the electromagnetic switch is connected with the control device,and the first hollow buoy can be matched with the first sensing device to connect or disconnect a power supply of the electromagnetic switch so as to control the control device to connect or disconnect a water supply pipe.

The invention relates to a pressure protection valve and a gas water heater. The pressure protection valve comprises a valve body. Valve element assemblies arranged in a valve cavity of the valve body, and the valve body is provided with a water inlet and a water outlet which communicate with the valve cavity. The pressure protection valve is characterized in that the two opposite side walls of the valve body are provided with a groove and a guide groove respectively. A valve element comprises the second valve element assembly and the first valve element assembly. The second valve element assembly is arranged in the valve cavity and used for controlling opening and closing of the water inlet and is in a normally-open state. The first valve element assembly is used for controlling the second valve element assembly to move and comprises a first valve rod, a first valve plug and a first elastic part. The first valve plug is slidingly and sealingly connected to the circumference wall of the groove, and the first elastic part abuts against the bottom face of the groove and the first valve plug. One end of the first valve rod is in driving connection with the first valve plug, and the other end of the first valve rod is slidingly contained in the guide groove. The first valve rod drives the second valve element assembly to move.

The invention provides an intelligent control system for preventing water from running from a faucet, and the system comprises a power supply unit, a flow sensor, a microprocessor, a data storage unitand a solenoid valve, wherein the power supply unit, a data acquisition unit, the flow sensor and the solenoid valve are independently connected to the microprocessor; the flow sensor is installed inthe household water pipe, and periodically transmits the collected real-time flow data to the microprocessor; the solenoid valve is installed in the household water pipe; the microprocessor is provided with a determination module, which can determine whether the water is running, and send a close command to the solenoid valve to close the solenoid valve when determining that the water is running.The system can fully consider the factors of water consumption time and single water consumption by using simple instruction calculation to accurately judge whether water running occurs, and close the water inlet pipe from the source in time, so as to prevent water running.

The invention relates to a solar hot water system with the function of anti-running water. The solar hot water system comprises a water storage tank, a full glass vacuum heat collecting tube, a heat collecting coupler, a heat collection circulating pump, an automatic controlling instrument, a water level controller for replenishing water for the water storage tank and a one way valve or an electromagnetic valve, wherein the output end of the automatic controlling instrument controls the power on-off of the heat collection circulating pump and the electromagnetic valve respectively. The solar hot water system is characterized in that the solar hot water system also comprises a liquid level sensor which prevents water from running after the full glass vacuum heat collecting tube is damaged; and the output end of the liquid level sensor is connected with the corresponding input end of the automatic controlling instrument. The solar hot water system has the advantages of preventing the problem of water running produced after the full glass vacuum heat collecting tube is unexpectedly damaged, thereby avoiding the waste of mass water resource and ensuring the normal operation of the solar hot water system.

The invention discloses a normal-pressure self-closing valve and belongs to the field of water supply valves. The normal-pressure self-closing valve comprises a straight-through single-seat valve body and a valve cover, and a valve seat and a valve element which are arranged in the straight-through single-seat valve body form a sealing pair. A valve rod is arranged on the valve element in the straight-through single-seat valve body, an unthreaded hole perpendicular to the valve seat in the straight-through single-seat valve body is arranged on the valve cover, the upper end of the valve rod penetrates through the unthreaded hole, a second valve element is arranged at the upper end of the valve rod, a free sliding gap is reserved between the unthreaded hole and the valve rod, a second valve seat is arranged on the lower surface of the valve cover and matches with the valve element in the straight-through single-seat valve body to form a second sealing pair, a third valve seat is arranged on the upper surface of the valve cover and matches with the second valve element outside the straight-through single-seat valve body to form a third sealing pair, and the first sealing pair in the straight-through single-seat valve body and the third sealing pair outside the same seal synchronously. The normal-pressure self-closing valve is used for preventing water from escaping.

The invention discloses a faucet assembly for a washing machine. The faucet assembly comprises a water inlet pipe joint, a water way connecting piece and a water stop piston. One end of the water inlet pipe joint is connected with a washing machine water inlet pipe. One end of the water way connecting piece is connected to a water source, and the other end of the water way connecting piece is connected to the other end of the water inlet pipe joint. A water circulating way is formed between the two ends of the water way connecting piece. A water flow shrink and stop portion is arranged in the water circulating way. The water stop piston penetrates the shrink and stop portion and is arranged in the water circulating way. The diameter of a piston head of the water stop piston is larger than that of the shrink and stop portion. A piston rod extends out of the water way connecting piece. A water channel is arranged between the piston rod and the shrink and stop portion. An abutting portion is arranged on the inner wall of the water inlet pipe joint. The abutting portion abuts against the piston rod and moves in the direction in which the piston head is separated from the shrink and stop portion. The water stop piston moves in the direction in which the piston head is close to the shrink and stop portion only depending on water pressure in the water circulating way without depending on other external force. The faucet assembly for the washing machine is simple in structure, and water supply can be stopped automatically after the water inlet pipe of the washing machine falls off.

The invention relates to a drinking water anti-leaking intelligent controller which is formed by a micro processor, a timing circuit, an interlock, a display circuit, a pulse generating circuit, an address decoder, a parallel interface, a door dog, an input keyboard and a switch value output circuit, wherein the micro processor is a core device which is connected with the display circuit by the interlock and is connected with the input keyboard and the switch value output circuit by the interface; the digital value input interface is connected with the timing circuit to output the signal; the timing interface is connected the pulse generating circuit; the strobe signals of the address decoder are separately connected with the timing circuit, the interlock, the display circuit, the door dog and the parallel interface; the reset end of the door dog is connected the micro processor.

An automatic train water feeding device belongs to the technical field of railway train supporting equipment, in particular to an automatic train water feeding device. The invention provides automatictrain water feeding device which is convenient to use and high in automation degree. The invention comprises a vehicle-mounted water tank and a water feeding mechanism, wherein the vehicle-mounted water tank comprises a water tank body with an upper water pipe of the water tank, the end of the upper water pipe of the water tank is an upper water pipe joint, and a rotating sleeve is arranged outside the upper water pipe of the water tank and the upper water pipe joint of the water pipe; A loc motor corresponding to that rotary sleeve is arrange on the side of the rotary sleeve; The water feeding mechanism comprises a water storage tank, a water source upper water pipe connected with a connecting device is arranged on the water storage tank, a water pipe lower joint at the end of the watersource upper water pipe corresponds to the water pipe upper joint, and a rotating member matched with a rotating sleeve is arranged on the water pipe lower joint. The water supply mechanism comprisesa water storage tank, a water source upper water pipe connected with a connecting device, and a water pipe lower joint corresponding to the water pipe upper joint.

The invention relates to a multi-functional electric heater, the main technical support points of the electric heater are humidifying and energy-saving functions. The electric heater consists of a main electric heater body, a water tank and an electronic control and temperature control device, and is characterized in that: a humidifying pipeline with a section in a closed curve is arranged at the position which is close to the heating area of the main electric heater body, two ends of the humidifying pipeline are respectively communicated with a water outlet and a water back-flow hole of the water tank to form a water-steam circulating channel, and a steam outlet for leading the steam to be escaped from the channel is arranged on the water-steam circulating channel. Additional heating component is not arranged in the humidifying pipeline, so the usage is safe.

The invention relates to a salt roasted chicken foot preparation method. 10 parts of chicken feet, 5 parts of lotus leaf, 2 parts of table salt, 1 part of Alpinia galangal, 2 parts of cooking wine, 2 parts of soy, 0.2 parts of cassia bark, 0.2 parts of tsaoko fruit, 1 part of rock sugar, 0.2 parts of ginger slice, 0.4 parts of scallion, 0.1 parts of yellow rice wine, 0.05 parts of licorice root and 0.05 parts of clove are combined and are supplementary to each other. The chicken feet are coated with a lotus leaf and the chicken feet are cooked in hot table salt so that the chicken feet have a lotus leaf fragrance and chicken feet water loss is avoided. The salt roasted chicken foot preparation method is a unique processing method and realizes complete separation of bone and meat. The salt roasted chicken foot has a soft and crispy taste and is convenient to eat.

The invention discloses an anti-falling water-stop converter comprising an adapter and a quick coupling. The lower end of the adapter is provided with a water outlet nozzle, and the quick coupling isconnected to the water outlet nozzle of which the lower end is provided with a water outlet; the adapter is internally provided with a piston inner core movably inserted into the water outlet, and theupper end of the piston inner core is provided with a plug matched with the water outlet hermetically; the lower part of the piston inner core is a hollow pipe body, and the peripheral wall of the piston inner core is provided with a water through hole; the quick coupling is internally provided with a stop block which abuts against and is connected to the lower end of the piston inner core, and under the limitation of the stop block, the piston inner core is jacked; the water through hole is located in the adapter and communicates with a waterway, and a first sealing ring is arranged betweenthe quick coupling and the water outlet nozzle; and the upper end of the adapter is connected to a connector. In case the quick coupling falls accidentally, the piston inner core is out of limit, andthe water outlet of the water outlet nozzle is blocked by the plug of the piston inner core under the pushing effect of water flow, so that water is stopped automatically; and the seal is ensured under the effect of water pressure, and ceaseless water flow is avoided.

A water running preventing faucet comprises a faucet body and a water running preventing mechanism. The faucet body comprises a valve, a valve element, a rotary switch, an upper end cover and a bottom cover. The water running preventing mechanism comprises a piston assembly and a shifting fork assembly. The piston assembly comprises a piston and a first spring. A water inlet hole sealing cap is arranged at the lower end of the piston. A piston chamber is formed in the lower end of the valve element. The first spring and the piston are arranged in the piston chamber. One end of the first spring abuts against the valve element, and the other end of the first spring abuts against the piston. The shifting fork assembly comprises three shifting forks, a second spring and a spring pin. The three shifting forks are fixed to the outer wall of the lower end of the valve element at equal intervals in the circumferential direction, and the three shifting forks and the valve element are of an integrated structure. A spring chamber is formed in the inner wall of the valve, and the second spring is arranged in the spring chamber. One end of the spring pin is inserted in the spring chamber, the other end of the spring pin abuts against the valve element, and a push rod is obliquely arranged on the spring pin. According to the water running preventing faucet, a water inlet of the faucet can be automatically sealed, water running is prevented, the structure is novel, and using is convenient.

The invention discloses an anti-run-out water gate capable of being automatically closed and opened. The anti-run-out water gate comprises a gate body, a water inlet tube connector, a water outlet tube connector, a gate pin and a return silica gel, wherein a cover plate is arranged at the upper end of the gate body; the water inlet tube connector communicates with one side of the gate body; the water outlet tube connector communicates with the lower end of the gate body; the gate pin is arranged in the gate body; and the return silica gel is arranged at the lower middle part of the gate pin in a sleeving manner. According to the anti-run-out water gate disclosed by the invention, installation of an anti-run-out device at each faucet end is avoided, run-out of all faucets can be prevented simultaneously, and the anti-run-out water gate is simple and convenient to use. The anti-run-out water gate is convenient to install and overhaul, a certain internal part can be replaced in the case of being damaged, and the use cost is low. The anti-run-out water gate disclosed by the invention is ingenious in structure, capable of ingeniously realizing a function of automatic closing and opening, and a function of opening the water gate through pressure changes, and is further capable of being manually operated. The anti-run-out water gate disclosed by the invention integrates an anti-run-out water gate with a common running water main gate, and is more convenient and faster to use.

The invention discloses a water faucet and a water purification system with the water faucet. The faucet includes: a main body, the main body is provided with a water inlet and a water outlet, the main body is also provided with a first interface and a second interface, the first interface communicates with the water inlet, and the first The second interface communicates with the water outlet; an on-off valve, the on-off valve is arranged on the main body and is used to conduct and block the second interface and the water outlet. The faucet according to the embodiment of the present invention has a simple structure, and can solve the connection problem of the countertop water purification device and the kitchen sink waterway in the prior art.

The invention discloses an automatic waterway circulation device for a thermal-humidity test chamber waterway system. The automatic waterway circulation device comprises a water pump (2) connected with a water storage tank (1). A one-way valve (3), a pressure controller (4), a hand valve (5), a water pressure gauge (6) and an electromagnetic valve (7) are sequentially arranged on a pipeline between the water storage tank (1) and a humidifying boiler (11), a mechanical water floating ball (8) and an electronic water floating ball (12) are installed on the upper portion inside the humidifying boiler (11), the electronic water floating ball (12) is connected with a relay of the water pump (2), a heating bar (9) is installed on the lower portion inside the humidifying boiler (11), and a steam outlet (10) is arranged on the top of the humidifying boiler (11). The reliability of the thermal-humidity test equipment waterway circulation system is improved, and defects in the prior art are overcome.

Disclosed are a collapsible canopy frame for easy building and storage while collapsed to minimize the volume thereof, and a canopy using same. The collapsible canopy frame has symmetric connecting frames and asymmetric connecting frames both of which are connected to and between four posts, each of the symmetric connecting frames and asymmetric connecting frames having two rods linked in an X-shape. The symmetric connecting frames have crossing connecting points and connecting points at ends of the rods in the same length, thereby forming a horizontal part, and the asymmetric connecting frames have crossing connecting points and connecting points at ends of the rods in different lengths, thereby forming a sloping part. The present invention is convenient to use when a tent is coupled to the collapsible canopy frame, since the horizontal part and the sloping part form a sloping surface on the tent, thereby allowing rainwater to drain in a certain direction in case of rain. Also, the present invention is convenient to use, since the same collapsing method is used for all connecting frames connected to the posts, and thus merely folding and unfolding motions enable the storage and building of the present invention.

The invention discloses a multifunctional lift-up type cold and hot water faucet valve core, which belongs to the technical field of water faucets, and includes a valve core, and the valve core is a lift-up type cold and hot water faucet valve core with a water supply device, which is characterized in that The left and right rotation angles of the spool described above are all set to 60-360 degrees, and the valve stem of the spool is provided with an optimal mixed water flow locking screw. The multifunctional lift-up cold and hot water faucet spool of the present invention has the functions of optimal mixed water flow locking, optimal cold water flow locking, optimal hot water flow locking, valve locking and the like. The multi-functional lifting type cold and hot water faucet valve core of the present invention has the characteristics of economy, safety, convenience, time saving, labor saving, water saving and the like.

An IC card electronic water meter for tap water, comprising: a water meter and a control device, a flow sensor connected to the water meter, a position sensor, a flow sensor and an IC card socket connected to the signal input terminal of the core micro-control unit of the water meter control device, and the signal input terminal is also connected to the There is a battery voltage monitoring module and a voltage sensor; the signal output end of the micro-control unit is connected to the "water cut-off in arrears" valve through the valve opening / closing drive module, and the signal output end is also connected to a liquid crystal display module; a position sensor is set to ensure the water meter Placed horizontally to avoid errors and ensure the accuracy of the water meter; to solve the problem of malicious power outages, the battery is easy to replace, and to avoid the hidden danger of strangers entering the house due to battery replacement. The pulse power supply with variable cycle reduces the power consumption of the Hall element and saves electricity. The use of water pressure sensors and micro-holes for leakage can prevent "running water" caused by pipeline rupture and unintentional opening of the faucet after the water is cut off. The IC card uses a password system combining "rolling code" and DES encryption algorithm.

The invention relates to a pressure protection valve and a gas water heater, comprising a valve body and a valve core assembly, characterized in that the valve body is also provided with a bypass pipe communicating with the valve chamber; the second valve core assembly is arranged in the valve chamber for controlling On and off of the water inlet, the second spool assembly is in a normally open state; the first spool assembly is set in the side pipe to control the action of the second spool assembly; it includes the first base and the first valve set in the side pipe rod, the first valve plug, the first magnetic part and the second magnetic part; the first valve plug can be slidably sealed and connected to the inner wall of the side pipe; the first valve plug is drivingly connected to the first valve stem, and the first valve stem can be slidably Located on the first base, the first valve stem drives the second valve core assembly to move; the first base and the first valve plug are respectively provided with a first accommodation groove and a second accommodation groove; the first magnetic part is accommodated in In the first accommodating groove; the second magnetic part is accommodated in the second accommodating groove; the first magnetic part and the second magnetic part are oppositely arranged and opposite to each other with the same poles.

Disclosed are a collapsible canopy frame for easy building and storage while collapsed to minimize the volume thereof, and a canopy using same. The collapsible canopy frame is provided with two long posts, two short posts disposed relatively low, and x-shape connecting frames folded therebetween. The volume of the collapsible canopy frame when wholly collapsed is minimized by varying the length of ends of the connecting frames connected to and between the posts having different heights. Accordingly, the same collapsing method being used for all connecting frames connected to the posts makes building and storage convenient. Also, the canopy having the collapsible canopy frame coupled to a tent is convenient to use, since slopes are formed on the tent, thereby allowing rainwater to run down only to the side of the short posts in case of rain.

The invention discloses a high-frequency vibrating screen, which includes a screen box, a screen plate, a box-type vibrator and a drive system. The screen box includes two side plates, a plurality of beams and a drive beam. The two side plates pass through The spring is installed on the support, and the lower edges of the two are connected by a plurality of parallel beams, and the middle upper part is connected by a driving beam. The box-type vibrator is installed on the driving beam and connected with the driving system. The sieve plate It is fixed on the upper part of the beam and is formed by the butt joint of a positive inclined sieve plate and a negative inclined stepped sieve plate. The inclined sieve plate is located at the rear of the stepped sieve plate. . The present invention adopts the segmented sieve plate composed of inclined sieve plate and stepped sieve plate and uses the forced synchronous box-type vibrator as the excitation source, which can not only promote the loosening, delamination and further dehydration of coal slime, but also effectively prevent piles Material and water run-off phenomenon, improve the dehydration effect of slime water, and the failure rate is low, which greatly improves the operation reliability of the sieve machine.