49results about How to "Prevent Suckback" patented technology

The invention discloses a shielding gas circulating filtration device for a 3D printing metal powder bed forming cavity and an optimization method of the shielding gas circulating filtration device. According to the optimization method, the vertical movement distance z of processed smoke is adjusted and is not larger than the height h of an air suction flow guiding channel, and accordingly the purposes that the processed smoke is completely captured by the air suction flow guiding channel, and the pressure from an air inlet flow dividing port to an air suction flow guiding port in the forming cavity is gradually reduced are achieved; and a machined metal part has the beneficial effects of being good in surface quality, high in density, good in mechanical performance and the like.

The invention discloses a cleaner cyclone-typed secondary dust separating cup, which comprises the following parts: case, vent on the case, inlet contacted peripherial wall of case, separator in the case, baffle lid on the bottom floor under separator, upper end of separator in connection with rack, inlet of separator under ring-shaped lid, cylinder with inlet on two ends of ring-shaped lid, short vent pipe in connection with bottom rack of rack with the same shaft in each cylinder, conical cylinder in the cylinder at lower position than short pipe, separating ring in connection with lower end of conical cylinder with roof connecting rack, ring-shaped gap among periphery of cylinder, floors on two bottoms of baffle ring and cylinder.

The invention provides a natural gas hydrate synthesis and mining simulation experiment system and method. Combustible ice is synthesized by CH4 gas in a gas storage tank and clear water in a first liquid storage tank, a temperature control box, a backup pressure valve and a piston container form a combustible ice mining experiment system, and influences of the temperature, the pressure and the inhibitor quantity on combustible ice mining are analyzed by collecting the temperature, the pressure and the inhibitor quantity; meanwhile, further detailed analysis and research are conveniently carried out according to the temperature on a sand-filled tube, the internal temperature tested by a pressure probe and the change condition of the pressure; meanwhile, a one-way valve is used for preventing the back suction phenomenon caused by air interference in the experiment system, and the experiment accuracy is improved; and through the backup pressure valve, a fourth pressure gauge, a liquid injection pump and a fifth pressure gauge, precise control over the gas or liquid pressure is realized, pulses are prevented, and the accuracy of measurement and experimental results is improved. The natural gas hydrate synthesis and mining simulation experiment system is simple in structure and convenient to operate, and the experimental process is better controlled.

The invention belongs to the field of analytical chemistry and relates to an extraction head detachable type solid phase micro extraction probe and a preparation method thereof. The preparation method comprises the following steps of: shearing a polydimethyl siloxane tube and a metal wire; coating a layer of high-temperature epoxy resin glue on the metal wire and sleeving the polydimethyl siloxane tube on the metal wire for fixedly bonding to obtain a self-made extraction head, wherein a sleeve is arranged at one end of the self-made extraction head, and a free metal wire is arranged at the other end of the self-made extraction head; then properly extruding at the position of an inner tube of a solid phase micro extraction probe suit, which is away from the tail end by 0.2-0.5cm so as to generate a dent, or bending the free metal wire part of the self-made extraction head by more than one bent; and inserting the metal wire into the inner tube. The probe is simple and convenient in theuse and preparation processes; the probe can be continuously used by extracting the extraction head and inserting a new self-made extraction head after being used; and the repeated selective examination times can reach 80-120 times. The cost of each probe is one thousand of that of the traditional commercial probe and has strong operability and reliability.

The invention discloses urinary tract anesthesia and irrigation equipment for the urological department. The equipment comprises a base, wherein the upper surface, close to the middle, of the base isfixedly connected with an anesthesia storage tank of which the top end is provided with an opening, the upper surface, close to the left end, of the base is slidably provided with a connecting tube, the end, away from the anesthesia storage tank, of the connecting tube is fixedly connected with a liquid delivery flexible pipe, the right side, close to the bottom end, of a supporting plate is rotatably connected with a driving mechanism through a bearing, the upper surface, close to the anesthesia storage tank, of one end of the connecting tube is hinged with a push-and-pull mechanism, and theupper surface of a piston is hinged to the bottom end of the push-and-pull mechanism. Through the cooperation of the structures, the urinary tract anesthesia and irrigation equipment solves the problems that when the urinary tract anesthesia and irrigation equipment performs anesthesia and irrigation on the urinary tract, automatic constriction of an urinary tract intubation tube is not easy to achieve, the urinary tract is not easy to anesthetize when the urinary tract intubation tube is constricted, the length of urinary tract anesthesia and the amount of liquid outlet are difficult to control, and inconvenience is brought to the urinary tract anesthesia.

The invention relates to an oil-water separating device and an oil sludge separating apparatus including the same. The oil-water separating device comprises a shell, an oil feeding unit arranged on the shell, a drainage hole, an oil outlet and a heat exchange unit arranged in the shell, wherein the heat exchange unit comprises multiple layers of heat exchange tubes, the oil feeding unit comprises an oil feeding pipeline communicated with the interior of the shell, the end , located in the shell, of the oil feeding pipeline is provided with a plurality of nozzles, and the nozzles are located among the heat exchange tubes or below the heat exchange tubes. The oil-water separating device provided by the invention has good condensation effect, can effectively reduce the temperature of high-temperature oil gas, greatly improves oil-water separation efficiency, enhances the utilization rate of waste oil, and achieves the purposes of energy conservation and environmental protection.

The invention discloses an energy-saving type hydraulic pump durability testing table with hydraulic analog loading. The energy-saving type hydraulic pump durability testing table is composed of a power guide module, a power output module, a cooling module, a rectifier bridge way, a loading module, an energy recovery module and an oil tank. According to the energy-saving type hydraulic pump durability testing table, energy is stored in an energy accumulator of the power guide module, and therefore the energy-saving function is achieved. According to the energy-saving type hydraulic pump durability testing table, a variable displacement motor output shaft of the loading module is coaxial with a second shaft and an overrunning coupler of the energy recovery module, a hydraulic pump is driven to rotate, and energy recovery is achieved. Hydraulic analog loading of the energy-saving type hydraulic pump durability testing table is achieved by adjusting the system pressure, and the hydraulic pump durability test rated conditions can be met. The energy-saving type hydraulic pump durability testing table can be used for testing hydraulic pumps in multiple specifications under the condition that the modules are kept unchanged.

The invention discloses a cyclone separator, which comprises the following parts: cylinder, tangent inlet on upper end of cylinder, cylinder roof in connection with rack, short outlet pipe in connection with rack bottom hole in the center of cylinder, concial cylinder in the inner wall of cylinder with lower position than short pipe, dust collecting cavity between concial cylinder bottom and bottom lid, wherein the bottom of concial cylinder possesses baffle bag, whose peripherial wall connects outer wall of concial cylinder through connecting bar; one ring-shaped gap is formed between inner wall of separating bag and outer wall of concial cylinder; the separator is paralleled by multiple individual separators; multiple housing separators are set around separator in the inner wall of dust cup; each short outlet pipe of separator connects rack bottom hole; the separator inlet is set on the bottom lid of separator, which is between ring-shaped lid and cylinder on the lateral side of separator.

The invention discloses a vacuum pump with a special-shaped cavity; the vacuum pump comprises a stator and a rotor; wherein the stator is a cylinder body provided with a special-shaped cylindrical-surface inner cavity, an inlet and an outlet; the special-shaped cylindrical-surface inner cavity is formed by two arc surfaces and two non-arc surfaces; the rotor is formed by a rotor body and two pairs of combination slide plates; the rotor body is a circular cylinder body provided with a transmission shaft, a centering shaft and a crossed guide groove; the two pairs of combination slide plates are vertically arranged in the guide groove; a cover plate is a flat plate provided with a bearing hole; the two end faces of the stator are matched with the cover plate to form into a sealing cavity; the rotor is matched with the bearing hole on the cover plate by the transmission shaft and the centering shaft; the external drive couple drives the rotor to rotate by the transmission shaft. When the rotor rotates, the combined arc surface of the special-shaped cylindrical-surface inner cavity matches with the rotor to control the two pairs of combination slide plates to slide alternatively to intake air through the inlet and press air out through the outlet, thereby forming negative pressure in the inlet area.

The invention relates to multifunctional vacuum impregnating equipment, and belongs to the technical field of testing equipment for simulating vacuum dry impregnation. The equipment comprises a vacuum pump (21), a vacuum tank (23), an oil tank (3) and a PLC automatic control system (15), wherein the vacuum pump (21) is arranged outside a tank body; the vacuum pump (21) is connected with the vacuum tank (23) through an exhaust pipe (17); the exhaust pipe (17) is provided with an electromagnetic valve (19) and a cold well; the oil tank (3) is arranged at the upper part of the tank body; the oil tank (3) is connected with the vacuum tank (23) through a communicating pipe (29); the communicating pipe (29) is provided with an oil drain valve; and the PLC automatic control system (15) is connected with a vacuum tank temperature controller (8), an oil tank temperature controller (9) and a vacuscope (12). The multifunctional vacuum impregnating equipment can achieve vacuum drying and impregnating process of an insulating material, and can stably run at target temperature and air pressure for a long period of time; and meanwhile, the equipment is reasonable in structure, safe, reliable, convenient and simple to operate, high in work efficiency and excellent in performance.

The invention discloses an automatic sandblasting device special for a tire mold. The automatic sandblasting device comprises a shell; a mounting plate is fixedly mounted on the inner side wall of theshell; two workpiece placement platforms are symmetrically and rotationally connected to the upper end face of the mounting plate; the upper end face of each workpiece placement platform is fixedly connected with a workpiece fixing platform; a plurality of sliding cavities are formed in the upper end face of each workpiece fixing platform in the circumferential direction at equal intervals; and an electromagnet is transversely and fixedly mounted in each sliding cavity, a magnet exciting coil is wound on each electromagnet, and a permanent magnet is slidably connected into each sliding cavity. According to the automatic sandblasting device, in the sandblasting process of the mold, a controller controls a fan to be powered on, then the fan operates, air blasting is conducted on the surfaceof the mold through a sandblasting nozzle on the inner side of an air blasting pipe, and then sand gravel on the surface of the mold falls off from the surface of the mold quickly, so that the surface of the mold is cleaner and more attractive.

The invention discloses an anti-suck-back pressure-compensation current stabilizer for agricultural irrigation, and particularly relates to the field of agricultural irrigation. The current stabilizercomprises a current stabilizer box body and an equipment base, a low-pressure pumping cavity and a pressure stabilizing cavity are formed in the current stabilizer box body, circulating hoses are fixedly connected to the end parts of a communicating pipe and an water outlet pipe opening, the output end of a clutch transmission box is fixedly connected to a rotating shaft, one end of the rotatingshaft is fixedly connected to a rotating abutting disc in a sleeved mode, a piston plate is slidably installed in the pressure stabilizing cavity, a limiting switch is embedded in the inner wall of the pressure stabilizing cavity, and an alarm prompt box is fixedly installed on one side of the current stabilizer box body. The piston plate is pushed to move by utilizing the reaction of the circulation resistance of the water-liquid pressure in the low-pressure pumping cavity, the internal volume of the pressure stabilizing cavity is enlarged to perform pressure release adjustment, pressure stabilizing adjustment of overlarge water-liquid pressure is realized, burst damage of a micro-irrigation pipeline caused by continuous high pressure is prevented, and water and soil loss of a root systemcaused by high-pressure water flow is prevented.

An embodiment of the invention discloses homogenizing equipment for production of home decoration coatings, belonging the technical field of coating processing. The equipment comprises a grinding tankfor grinding and filtering coatings and a homogenizing tank for mixing the ground coatings, wherein filter pipes are fixed to the upper side and the lower side of an inner cavity of the grinding tank; grinding joints for extruding and grinding the inner walls of the filter pipes are arranged on the inner sides of the filter pipes; a shaft rod is fixed to the middle part of the bottom of each grinding joint; one side of the bottom of each shaft rod penetrates through the homogenizing tank; a motor is fixed to one side of the bottom of the homogenizing tank; the power output end of the motor isconnected with the shaft rods; a stirrer is fixed to the side surface of each shaft rod in the homogenizing tank; and one side of the top of each filter pipe communicates with a feeding pipe. Throughcooperation of the grinding tank and the homogenizing tank, coating particles can be conveniently homogenized after being fully ground, so the fluid uniformity of coating production is improved.

The invention discloses a cleaning and drying device for corrosion foil. The device comprises a box. An acid gas treatment device and a hot air device are fixedly connected to the top of the box, theacid gas treatment device communicates with an inner cavity of the box through an air outlet pipe, and a hot air pipe is horizontally arranged on the top of the inner cavity of the box. The two ends of the hot air pipe are closed, the bottom of the hot air pipe is provided with multiple air jets with screening holes, and the upper end of the hot air pipe communicates with the hot air device through a pipe. A cleaning device is arranged on the portion, below the hot air pipe, of the inner cavity of the box, a cleaning plate is arranged below the cleaning device, and a rotation shaft is arrangedbelow the cleaning plate. The cleaning plate is rotatably connected with the rotation shaft, and the bottom of the box is provided with a heater. After cleaning is completed, the heater is opened forheating and drying, the hot air device is started at the same time, hot air of the inner cavity of the box blows into the acid gas treatment device through the air outlet pipe, the acid gas treatmentdevice absorbs acid gas in the hot air, and the situation is avoided that since the environmental pollution is caused by the acid gas, the health of personnel is influenced.

The invention relates to the technical scheme of pressure balance devices, and discloses a pressure balance device and a lamp with the pressure balance device. The pressure balance device comprises a balance component and a mounting component, wherein when pressure of an inner cavity of the lamp is smaller than external pressure of the lamp, the balance component carries out automatic adjustment, and the mounting component is fixed to a lamp shell. The mounting component comprises a main body and a casing shell, wherein the main body is provided with a penetrating through hole, and an opening is formed in one end of the casing shell. An air guide groove for being communicated with the casing shell is formed in the hole wall of the outer end of the through hole, and the balance component comprises a spring, a sliding block and a sealing piece; and the spring, the sliding block and the sealing piece are arranged in the through hole in sequence. The invention further provides the lamp. The lamp comprises a shell body and a light-emitting component which is fixedly arranged in the shell body. A mounting hole is formed in the shell body, and the pressure balance device is fixedly arranged on the mounting hole. According to the device, internal pressure and external pressure of the cavity of the lamp are balanced, and the suck-back phenomenon is avoided; the service life of the lamp is prolonged; and the pressure balance device is simple in structure and good in sealing performance, and the production cost is reduced.

The invention discloses a bearing capable of preventing oil from being sucked back. The bearing capable of preventing the oil from being sucked back comprises an outer ring of the bearing and an innerring of the bearing, wherein a plurality of rolling balls are mounted between the outer ring of the bearing and the inner ring of the bearing, and the rolling balls sleeve a holder; adjacent rollingballs are connected through the holder; rolling ball grooves for mounting the rolling balls are formed in the inner ring of the bearing; a lubricating oil channel with a trapezoidal section is formedin the inner ring of the bearing; the end with large diameter of the lubricating oil channel is provided with an oil inlet, and the end with small diameter of the lubricating oil channel is provided with an oil outlet; a filtering plate is arranged in the lubricating oil channel; a spring is mounted on the inner wall of the filtering plate, and one end of the spring is connected to a steel ball. According to the bearing capable of preventing the oil from being sucked back, the lubricating oil channel is arranged, and the filtering plate is mounted in the lubricating oil channel and is capableof filtering lubricating oil, so that the abrasion of the impurity in the lubricating oil to the rolling balls can be prevented; the spring is arranged and is connected to the steel ball, the small-diameter end of the lubricating oil channel can be sealed through the steel ball, and thus the lubricating oil is prevented from flowing out from the lubricating oil channel to be sucked back.

The invention discloses a recrystallization device for a chemical product. The device comprises a suction flask, a hose, a base and a base plate. A soft wood plug is arranged above the suction flask,a funnel port and a Buchner funnel are arranged at one end of the soft wood plug, a rubber plug is arranged at one end of the hose, the other end of the hose is connected to the suction flask, a glasstube and a safety bottle are arranged at one end of the rubber plug, a bracket and an iron bracket are arranged above the base, an asbestos wire gauze is fixedly mounted at one end of the bracket, and an evaporation hood and an evaporation vessel are arranged above the asbestos wire gauze. The recrystallization device for the chemical product is provided with a rubber anti-skid sleeve, the safetybottle and the evaporation hood, can prevent slip when sweated hands are in contact with an alcohol lamp, also can prevent a suck-back phenomenon caused by operating errors to pollute a sample, can reduce evaporation of the sample, saves resources and suitable for different working conditions, and brings a better application prospect.

The invention discloses a cooling water circulation system of a cold compress treatment device. The system comprises a refrigerating tank, a water inlet pipe and a plurality of first semiconductor refrigerating plates are installed on the refrigerating tank, a water adding tank is arranged on the top of the refrigerating tank, and a stirring paddle is arranged in the refrigerating tank; the system further comprises a constant temperature tank, a water outlet pipe, a water pipe and a plurality of second semiconductor refrigerating plates are installed on the constant temperature tank, the water pipe is connected with the refrigerating tank, and the first semiconductor refrigerating plates and the second semiconductor refrigerating plates are each provided with a cooling fan. The cooling water circulation system has the following advantages that the fluctuation range of the temperature of water in a cold compress bag is narrow, and therefore a joint or wound of a patient can be always recovered and treated in a low-temperature atmosphere; the refrigerating tank and the constant temperature tank are separately arranged, and therefore the cold compress effect is improved; the refrigerating tank is closed after refrigerating, low-temperature cooling water is kept by the constant temperature tank with low power consumption, and therefore power consumption of the device is greatly reduced.

The invention discloses an anti-suck-back structure of a smart toilet lid. The anti-suck-back structure comprises a toilet main body, the top of the toilet main body is provided with a seat cushion, acover plate and a first rotating seat, the cover plate is located at the top of the seat cushion, the seat cushion and the cover plate are rotatably connected to one side of the first rotating seat,one side of the top of the toilet main body is fixedly connected with vertical plates, the number of the vertical plates is a plurality, every two vertical plates form one group, and a cross bar is fixedly connected between each group. Sliding blocks are slidably connected to a bar body of the cross bar, the number of the sliding blocks is two, the two sliding blocks are oppositely arranged, the top of each sliding block is rotatably connected with a connecting rod, the top end of the connecting rod is rotatably connected with the first rotating seat, one side of the toilet main body is connected with a water inlet pipe, and the water inlet pipe is connected with a solenoid valve. The anti-suck-back structure enables a user to have a better touch when using the toilet, the phenomenon of suck-back is completely avoided, the flushing of the toilet can be completed without require the user to press a switch, and the user's new use requirements in life are greatly met.

The invention relates to the technical field of sanitation equipment and in particular relates to a shunting-type deodorization system and a fecal suction truck, wherein the shunting-type deodorization system comprises a deodorization mechanism, a self-controlled vent valve and a gas delivery mechanism; the self-controlled vent valve comprises a body, a first valve and a second valve; the body isprovided with an exhaust cavity, an air alternating cavity and an air inlet cavity which are communicated in sequence; the exhaust cavity is led to an exhaust port; the air alternating cavity is led to an air alternating hole; the air inlet cavity is led to an air inlet; the first valve is arranged on a communication hole located between the air alternating cavity and the exhaust cavity; the second valve is arranged on a communication hole located between the air alternating cavity and the air inlet cavity; the exhaust port of the self-controlled vent valve is communicated with the deodorization mechanism; and the gas delivery mechanism is communicated with the air alternating hole and an odor source. By using the shunting-type deodorization system disclosed by the invention, accurate shunting can be realized by virtue of the self-controlled vent valve according to the gas flow direction at the air alternating hole, and the phenomena of odor overflowing and reverse suction of a deodorant solution can be effectively avoided.

The invention provides a degradability testing device under a controlled composting condition. The device comprises an air supply mechanism, a degradable testing mechanism and a processor, an outlet of an air compressor of the air supply mechanism is communicated with a flow divider through a pipeline, and compressed air generated by the air compressor is input into the flow divider. The degradable testing mechanism is divided into a sample testing assembly, a reference sample testing assembly and a blank testing assembly, each group of testing assembly comprises a reaction kettle, a stirrer, a carbon dioxide sensor and a transmission module, the reaction kettle is communicated with the flow divider through a first air inlet pipe, and a heating device for heating the reaction kettle is arranged outside the reaction kettle; a stirring rod of the stirrer extends into the reaction kettle; the reaction kettle is communicated with a gas inlet of the carbon dioxide sensor through a first gas outlet pipe; the processor receives signals transmitted by the transmission modules of the multiple groups of testing assemblies. The device completely meets the GB / T 19277.1-2011 standard, and the final aerobic biological decomposition capability and disintegration degree of a test material are measured under the simulated strong aerobic composting condition.

The invention discloses a flushing device. The flushing device comprises a closestool composed of a water tank and a seat body, a water inlet valve and a drain valve are arranged in the water tank, ahydraulic button capable of allowing water to pass through is further arranged between the water inlet valve and the drain valve, and a first connecting pipe is arranged between the hydraulic button and the water inlet valve. A second connecting pipe is arranged between the hydraulic button and the drain valve, the drain valve is provided with a water tank drainage channel and a hydraulic button drainage channel, and water tank water flowing out of the water tank drainage channel and button water flowing out of the hydraulic button drainage channel are mixed and then flow out of a drainage port in the drain valve. By means of the structural design and the double-water-path structural design, the impact force after water flow mixing is enhanced, and the overall structural size of the product is greatly reduced.

The invention discloses a small-size and large-capacity dish preparation machine with a weighing function. The machine is characterized by comprising a dish preparation machine groove, a weighing assembly, a cleaning assembly, a display assembly and a control circuit module; and the weighing assembly, the cleaning assembly, a disinfection assembly and the display assembly are electrically connected with the control circuit module. The dish preparation machine has a weighing function, the additional value of the dish preparation machine is increased, meanwhile, a weighing assembly base is creatively designed, the size of the dish preparation machine is remarkably reduced, and meanwhile the capacity of the dish preparation machine is increased.

The invention discloses an energy-saving type hydraulic pump durability testing table with hydraulic analog loading. The energy-saving type hydraulic pump durability testing table is composed of a power guide module, a power output module, a cooling module, a rectifier bridge way, a loading module, an energy recovery module and an oil tank. According to the energy-saving type hydraulic pump durability testing table, energy is stored in an energy accumulator of the power guide module, and therefore the energy-saving function is achieved. According to the energy-saving type hydraulic pump durability testing table, a variable displacement motor output shaft of the loading module is coaxial with a second shaft and an overrunning coupler of the energy recovery module, a hydraulic pump is driven to rotate, and energy recovery is achieved. Hydraulic analog loading of the energy-saving type hydraulic pump durability testing table is achieved by adjusting the system pressure, and the hydraulic pump durability test rated conditions can be met. The energy-saving type hydraulic pump durability testing table can be used for testing hydraulic pumps in multiple specifications under the condition that the modules are kept unchanged.

The invention belongs to the technical field of heat accumulating type heating furnaces, and provides a heat accumulating type energy-saving emission-reducing heating furnace and a heating method. Theheating furnace comprises a hearth, a gas inlet, an air inlet, an empty smoke outlet and a soot outlet. A left gas heat accumulating body array and a left air heat accumulating body array are arranged at one side of the hearth in a spaced mode, a right gas heat accumulating body array and a right air heat accumulating body array are arranged at the other side of the hearth in a spaced mode, and acombustion opening facing the hearth is communicated among the hearth, one side of the left gas heat accumulating body array, one side of the left air heat accumulating body array, one side of the right gas heat accumulating body array and one side of the right air heat accumulating body array. The problem that coal gas in a heat accumulating type heating furnace pipeline is exhausted into the atmosphere is solved, energy resources are wasted, and environment contamination to a certain degree is caused.

The invention relates to a spherical button type pressure compensation dripper with an anti-suck-back function, which comprises a shell and a spherical compensation component, a water inlet, a wide-diameter main flow channel, a variable-diameter main flow channel and a narrow-diameter main flow channel are sequentially arranged in the shell, and the spherical compensation component is positioned in a channel formed by the wide-diameter main flow channel and the variable-diameter main flow channel; a spiral auxiliary runner extending from the large-diameter end of the variable-diameter runner to the narrow-diameter main runner is arranged on the inner side wall of the variable-diameter runner, and an energy dissipation boss located below the spiral auxiliary runner is fixedly arranged in the narrow-diameter main runner; the water outlet end of the narrow-diameter main flow channel is covered with a patch connected with the shell, and water permeable holes are formed in the patch. The structure is simple, the shell, the compensation part and the elastic patch can be directly formed through mold injection molding or general blanking treatment, and the manufacturing process is simple; the spherical elastomer is used as a compensation component, and the durability of the spherical elastomer is far better than that of a common sheet-shaped compensation structure; the elastic patch can prevent the suck-back phenomenon generated at the water outlet during shutdown, and soil and other impurities are prevented from being sucked in.

The invention discloses an efficient degassing structure for a glass fiber reinforced plastics production workshop. The efficient degassing structure comprises a workshop roof and a ventilation unit,wherein the ventilation unit is located inside the workshop roof; five groups of longitudinal rods and four groups of horizontal rods are erected inside the ventilation unit; exhaust fans are fixedlyarranged at multiple groups of junctions between the longitudinal rods and the horizontal rods. The efficient degassing structure for the glass fiber reinforced plastics production workshop is provided with the ventilation unit, a petroleum hydrocarbon dissolving chamber, a perforated speed reducing plate and a rotating motor, and a large number of exhaust fans are started periodically to eliminate harmful gases in the workshop in a centralized way. Petroleum hydrocarbon adsorbents are used for effectively absorbing exhausted styrene gas, and the perforated speed reducing plate can prolong theresidence time of air bubbles in the dissolving chamber by blocking effect. Four groups of fan blades are driven to rotate by an output shaft to produce suction force for increasing the air filteringspeed at an activated carbon filtering structure, thereby improving the gas treatment amount. The efficient degassing structure can adapt to different working conditions, and has a better applicationprospect.

The invention discloses a dust removal device based on an environment-friendly concrete mixing plant. The dust removal device comprises a discharging frame, wherein a mixing frame is mounted at the top end of the discharging frame; supporting columns are welded on two sides of the bottom end of the inner wall of the mixing frame at equal intervals; an air suction square pipe is mounted at the topends of the supporting columns; air suction holes are formed in the middle of one end of the air suction square pipe at equal intervals; one end of the air suction square pipe is connected with a three-way air suction guide pipe; a connecting square pipe is mounted in the middle of the bottom end of the three-way air suction guide pipe; and one end of the connecting square pipe is connected with aT-shaped filter pipe. According to the dust removal device disclosed by the invention, a dust suction mechanism and a dust removal mechanism are matched for use, so that dust generated in a mixing area of the concrete mixing plant can be sucked and treated; due to use of a cleaning mechanism, the service performance of the dust removal mechanism can be maintained, and the service life of the dustremoval mechanism is prolonged; and due to use of a recycling mechanism, wastes generated during operation of the dust removal mechanism can be collected, and the utilization efficiency of resourcesis improved.

The invention discloses a dust removal device based on an environment-friendly concrete mixing building, which includes a discharge frame, a stirring frame is installed on the top of the discharge frame, and supporting columns are welded at equal distances on both sides of the bottom end of the inner wall of the stirring frame. A suction square pipe is installed on the top of the support column, and the middle part of one end of the suction square pipe is equidistantly provided with suction holes. One end of the suction square pipe is connected with a three-way suction duct, and the bottom middle of the three-way suction duct A connecting square pipe is installed, and one end of the connecting square pipe is connected with a T-shaped filter pipe. The present invention can absorb and process the dust generated in the mixing area of ​​the concrete mixing building through the combined use of the dust collection mechanism and the dust removal mechanism, and can maintain the performance of the dust removal mechanism through the use of the cleaning mechanism, which is beneficial to improving the service life of the dust removal mechanism , Through the use of the recovery mechanism, the waste generated during the work of the dust removal mechanism can be collected, which is conducive to improving the utilization efficiency of resources.