161results about How to "Improve pumping efficiency" patented technology

The invention discloses a low-carbon high-compactness shotcrete elasticity reducing agent and a preparation method and application thereof, and relates to the field of building material concrete admixtures, the elasticity reducing agent comprises the following components by mass: 53-73% of a rheological component, 15-25% of a tackifying component, 10-18% of an early strength component, and 0.5-4% of a setting adjusting component; the rheological component comprises manganese slag powder and silica fume, and the tackifying component is tailing powder loaded with nano modified cellulose ether. The viscosity of sprayed concrete is increased through the tackifying component, the slurry wrapping property of the concrete is improved, the yield stress of the concrete is improved through the rheological component, and the early strength component is combined to synergistically improve the wall-adhering and quick-hardening properties after the material is sprayed, so that the rebound rate is reduced; the nano-particles loaded on the organic matter are hydrated in pores, harmful pores are directionally filled, the compactness and strength of the sprayed concrete are effectively improved, and low-carbon, low-resilience and high-compactness of the sprayed concrete are achieved.

The utility model relates to a shield pump internal circulation adjusting structure and a shield pump, and the shield pump internal circulation adjusting mechanism comprises a telescopic assembly which is arranged at the first end of an axial through hole formed in the center of a rotating shaft of an impeller, and the first end of the axial through hole is the end away from an inlet of the shield pump; and the control assembly is connected with the telescopic assembly and is arranged to control the telescopic assembly to stretch out and draw back so as to adjust the distance between the first end of the axial through hole and the telescopic assembly. According to the technical scheme, the internal circulation amount of the shield pump is reduced under the small-flow working condition, and therefore the efficiency of the water pump is improved; meanwhile, the internal circulation amount is kept under the large-flow working condition, motor heat dissipation is accelerated, and the service life of the motor is prolonged.

The invention belongs to the field of EBSD sample preparation, and relates to a method for preparing a metal microwire longitudinal section EBSD sample, which comprises the following steps: thermally embedding a metal microwire to obtain a thermally embedded block; the bottom of the hot inlay block is polished, and after the position traces of the metal microwires are exposed, the inlay block is cut into a plurality of hot inlay small blocks; carrying out cold inlaying on the hot inlaying small blocks by adopting thermoplastic resin to obtain first cold inlaying blocks; carrying out grinding, mechanical polishing and vibration polishing on the to-be-tested surface of the first cold mosaic block to obtain a second cold mosaic block; and heating the second cold mosaic block, and taking out the metal microfilament hot mosaic block to obtain the metal microfilament hot mosaic block. The method disclosed by the invention is relatively high in efficiency, large in effective area, low in preparation cost and wide in applicability, and is particularly suitable for metal microwires which are made of various materials and have the diameter of 100-500 microns. Therefore, the problem of preparation of the longitudinal section EBSD sample of the metal microwire is efficiently solved with high quality.

The invention provides a shield contaminated soil treatment device and a using method thereof, the shield contaminated soil treatment device comprises a stirring shell, a driving shaft and a grinding part arranged on the driving shaft in a linkage and sleeving mode, the grinding part divides the interior of the stirring shell into a grinding cavity and a stirring cavity which are distributed up and down, and a plurality of liquid pumping holes corresponding to the grinding cavity are formed in the side wall of the driving shaft in a penetrating mode; the stirring assembly is arranged in the stirring cavity, the stirring assembly comprises a stirring part which is in linkage with the driving shaft in a sleeving mode and a linkage assembly which is connected with the grinding part and the stirring part, the stirring part and the driving shaft are sequentially communicated to form a liquid pumping channel which is connected with the stirring cavity and the liquid pumping hole, and a first-stage one-way valve part is arranged in the stirring part in a spaced mode; a second-stage one-way valve located below the liquid pumping hole is arranged in the driving shaft in a spaced mode, and the first-stage one-way valve and the second-stage one-way valve divide the liquid pumping channel into a first liquid pumping area, a second liquid pumping area and a third liquid pumping area from bottom to top. The solid medicine dissolving sufficiency can be improved, and the medicine effect is prevented from being affected by wrong medicine proportioning.

The utility model relates to an exhaust end water-cooled Roots vacuum pump which comprises a pump body, a machine base is arranged below the pump body, a gas-water separation silencer is arranged in the machine base, the gas-water separation silencer comprises a silencer cylinder body, a first-stage cavity, a second-stage cavity and a third-stage cavity are sequentially arranged in the silencer cylinder body, and the first-stage cavity, the second-stage cavity and the third-stage cavity are communicated with each other. A first-stage damping air inlet pipe is arranged in the first-stage cavity, the first-stage damping air inlet pipe is a water-air inlet pipeline, and damping holes which are densely distributed are formed in the lower portion of the first-stage damping air inlet pipe; the second-stage cavity is an expansion cavity, a plurality of baffle plates which are arranged in an up-down staggered mode are arranged in the second-stage cavity, a final-stage damping exhaust pipe is arranged in the third-stage cavity, and the tail end of the final-stage damping exhaust pipe extends out of the silencer barrel. According to the utility model, the functions of gas-water separation and ideal noise reduction are realized, the exhaust resistance is not increased, and the energy consumption of the vacuum pump is not increased.

The invention discloses a drainage device for foundation pit construction site construction, and particularly relates to the field of foundation pit construction site construction, the drainage device comprises a high-pressure water pump, the input end of the high-pressure water pump is connected with a connecting pipe, one end of the connecting pipe is connected with a water pumping pipe, the top of the water pumping pipe is provided with a floating plate, and the bottom of the water pumping pipe is fixedly connected with a connecting branch pipe. According to the device, firstly, the water pumping pipe and the connecting plate can descend along with descending of the water level through the arranged floating plate, when water pumping is started, the water pumping end can suspend in water, bottom silt is prevented from being directly pumped away, the blocking time of the porous frame and the filtering cover is shortened, liquid in a foundation pit can be rapidly pumped away, and the water pumping efficiency is improved; meanwhile, in the water pumping process, the scraping frame can scrape impurities on the surfaces of the porous frame and the filtering cover while the connecting plate rotates at the bottom of the water pumping pipe through the automatic cleaning mechanism, the filtering and drainage effects are improved, the dredging frequency is reduced, the project progress is not affected, and the drainage efficiency is improved.

The invention discloses a mini air pump for tire inflation, and relates to the technical field of inflation pumps, the mini air pump comprises a front cover, a rear cover and a box body enclosed by the front cover and the rear cover, and further comprises a locking assembly arranged on one side of the front cover and used for fixing an accessory box and an air pressure piston assembly arranged in the front cover and the rear cover, the air pressure piston assembly is arranged in the box body, an air inlet of the air pressure piston assembly is connected to an air inlet groove in the box body, the storage battery and the motor core are arranged in the box body in parallel, the space occupied area of the storage battery and the space occupied area of the motor core are optimized and reduced, the specification of the whole air pump can reach 90 mm * 90 mm * 37 mm, and the size of the whole air pump can reach 90 mm * 90 mm * 37 mm. And meanwhile, through the arranged air tap connector, an air pipe is not needed, an air pump can be directly connected to a tire of an automobile or a bicycle for inflating, and the tire inflating efficiency of people is improved.

A 1907nm single-mode polarization-maintaining all-fiber laser belongs to the field of optics. The present invention solves the problem of low output power of the existing polarization-maintaining single-mode thulium-doped fiber laser. It includes: a fiber oscillator and a fiber amplifier; a high-reflectivity fiber Bragg grating is sequentially connected to the first forward-pumped optical combiner, the first low-doped single-mode thulium-doped gain fiber and the low-reflectivity fiber Bragg grating, and the first pump light source is connected to the first forward-pumped optical combiner pump fiber; the output end of the low-reflectivity fiber Bragg grating is connected to the input end of the first cladding pump light stripper; the first cladding pump light stripper is sequentially connected to the optical isolator, the mode field adapter, the second forward-pumped optical combiner, the second low-doped single-mode thulium-doped gain fiber and the second cladding pump light stripper, and the second pump light source is connected to the second forward-pumped optical combiner pump fiber; the optical isolator pigtail outputs linearly polarized light on the slow axis; all devices are polarization-maintaining devices. The present invention is used for fiber lasers.

The invention discloses a chiral amine ligand-based room-temperature continuous-wave perovskite laser and a preparation method thereof, a quasi-two-dimensional perovskite film with ordered phase distribution, strong crystal orientation and low lattice distortion degree is obtained by using a chiral amine ligand, and these characteristics endow the film with an excellent four-level material structural system, a high-energy-level material structural system, a high-energy-level material structural system, a high-energy-level material structural system, a high-energy-level material structural system, a high-energy-level material structural system and a high-energy-level material structural system. The carrier pumping efficiency is enhanced, population inversion is facilitated, and the laser threshold is reduced; the energy transfer efficiency from a low two-dimensional phase (n = 1) to a high two-dimensional phase (ngt; 5) is enhanced; the number and strength of hydrogen bonds between the perovskite octahedral frame and the perovskite octahedral frame are increased, and the electroacoustic coupling effect is effectively inhibited. The prepared chiral quasi-two-dimensional perovskite serves as a gain medium and is combined with an optical resonant cavity to prepare a laser, room-temperature low-threshold continuous wave or pulse laser emission can be realized under various coherent light source pumps, the threshold is 1-3 orders of magnitude lower than that of a traditional semiconductor laser, and the optimized threshold can reach 1.57 W / cm < 2 >.

The present invention discloses an exhaust gas treatment device, comprising an air intake cylinder, a first piston mechanism and a second piston mechanism, wherein a spray pipe is arranged in the air intake cylinder; the first piston mechanism comprises a first piston cylinder and a first piston slidably arranged in the first piston cylinder, an exhaust pipe is connected in the first piston cylinder, and one end of the first piston cylinder is connected to the air intake cylinder; the second piston mechanism comprises a second piston cylinder and a second piston slidably arranged in the second piston cylinder, a water outlet pipe is connected on the second piston cylinder, the water outlet pipe extends into the air extraction cylinder at one end away from the second piston cylinder and is connected to the spray pipe, and a water inlet pipe connected to an external water source is also arranged on the second piston cylinder; the device also comprises a crankshaft for simultaneously driving the first piston and the second piston to move. The present invention can simultaneously extract exhaust gas, pump water, discharge exhaust gas and spray exhaust gas, so that the spraying water volume changes in proportion to the air intake volume, thereby achieving the purpose of removing exhaust gas particles while well controlling the use of water resources.

The invention discloses a floating bridge water taking and pumping device and a using method thereof. The floating bridge water taking and pumping device comprises a water taking device, a pumping device, a main water pipe, a water outlet pipe, a sedimentation water tank, an overflow pipe, a blow-off pipe and a concentration and liquid level detection sensor. The water taking device comprises a water taking box, the side face of the bottom of the water taking box is connected with a water taking pipe, and a screen is arranged at the end of the water taking pipe. A main water pipe is connected above the submersible pump, a floating bridge is arranged on the main water pipe, the main water pipe is obliquely upwards arranged along a river levee, the main water pipe is connected with a sedimentation pool, a water outlet pipe is arranged in the middle of the sedimentation pool, an overflow pipe is arranged at the top of the sedimentation pool, a blow-off pipe is arranged at the bottom of the sedimentation pool, and a concentration detection sensor and a liquid level detection sensor are arranged in the sedimentation pool. The technical problems that a submersible pump is low in operation efficiency, multiple in equipment failures caused by pipeline blockage, cavitation and turbulent flow, large in machine vibration, short in service life of spare parts and the like are solved, continuous and accurate water pumping is achieved, the water pumping frequency is stabilized, the water pumping efficiency is improved, the service life of the spare parts is prolonged, and the water supply cost is reduced.

The invention relates to a mechanical device for grouting and a grouting method. Comprising a grouting vehicle, a mechanical arm base, a driver, a mechanical arm arranged between the mechanical arm base and the driver, and a drilling and grouting integrated grouting device arranged at the tail end of the driver. The grouting device comprises a plurality of grouting pipes and water pumping pipes, each water pumping pipe is provided with a power device, and simultaneous grouting and water pumping are achieved through the grouting pipes and the water pumping pipes; the grouting vehicle is provided with a slurry stirrer and conveys slurry to the driver and the grouting pipe through a slurry conveying pipe, and grouting is achieved. And the grouting device and the mechanical arm can be folded and stored in the grouting vehicle. The device can be rotated and adjusted in multiple directions to reach a target grouting position, the number of the branch pipe supports and the number of the water pumping pipes can be selected according to the state of a grouting stratum and surrounding rock, and the device is convenient to disassemble and convenient to transport and construct; the underground water level is reduced through mutual cooperation of the water pumping pipe and the grouting pipe so that the slurry retention rate can be increased, grouting slurry can be diffused more evenly, and the expected grouting effect is achieved.

The invention relates to the technical field of injection molding molds, in particular to a porous mold for ceramic slip casting, which comprises a porous ceramic slip casting mold for ceramic slip casting and a support frame for supporting the porous ceramic slip casting mold, the porous ceramic slip casting mold is composed of an upper mold and a lower mold which are distributed up and down, a mold plate is arranged above the upper mold, and a mold cover for sealing is fixedly connected between the mold plate and the upper mold; a transmission structure for lifting the upper die is installed on the supporting frame, the transmission structure is composed of a driving motor, a lead screw and a transmission part, the lead screw is rotatably installed on the supporting frame and penetrates through the interior of the die plate in a threaded mode, the transmission part is installed between the driving motor and the lead screw, and functional mechanisms are arranged on the side wall of the lower die and the supporting frame. The functional mechanism comprises an air exhaust structure and a material ejection structure. Air in the mold can be exhausted, defects such as bubbles and air holes are avoided, and the appearance quality and performance of products are improved.

The utility model relates to the technical field of casting, in particular to a vacuum negative pressure device for lost foam casting. According to the technical scheme, the device comprises a mounting bottom plate, a vacuum pump is arranged above the mounting bottom plate, a pressure stabilizing assembly is arranged at the position, located on the mounting bottom plate, of the air inlet end of the vacuum pump, a filtering assembly is arranged on one side of the pressure stabilizing assembly, a negative pressure pipe is arranged on a connecting pipe, and a vacuum distribution mechanism is arranged at the end, away from the connecting pipe, of the negative pressure pipe. The filtering assembly adopts a multi-layer composite filtering structure, so that impurities in gas can be efficiently removed, meanwhile, the system pressure can be monitored and adjusted in real time through an intelligent central controller in the pressure stabilizing assembly, pressure fluctuation is effectively buffered, a stable negative pressure environment is provided for lost foam casting, and the production efficiency is improved. And meanwhile, the vacuum distribution mechanism is designed in a modularized mode, negative pressure distribution can be accurately controlled according to different production requirements, the air exhaust efficiency is improved, and the production efficiency of lost foam casting and the precision of castings can be improved.

The invention provides a refrigerant circulation system for an air suspension compressor and a control method and device of the refrigerant circulation system. The system comprises a main refrigerant loop provided with an air suspension compressor, a condenser, an evaporator and an electronic expansion valve which are sequentially connected, a first inlet is formed in an air bearing of the air suspension compressor, a first outlet is formed in a machine body of the air suspension compressor, and the first inlet and the first outlet are both communicated to a cavity in the machine body; an outlet of the condenser is communicated to the first inlet through the liquid supply pipeline, and the first outlet is communicated to the evaporator through the liquid discharge pipeline; a pump body is arranged on the liquid supply pipeline, an exhaust pipeline communicated to the evaporator is further arranged on the liquid supply pipeline, and an exhaust valve is arranged on the exhaust pipeline. Through accurate control and an exhaust mechanism, on one hand, it is ensured that a refrigerant circulates in the system in the optimal state, on the other hand, stable operation of the pump body is ensured, the working efficiency of the pump body is improved, and then the efficient refrigeration effect is achieved.

The invention discloses a double-impeller centrifugal fan with noise reduction type centrifugal impellers, which belongs to the technical field of cooling fans and comprises a frame, a motor and impellers. An air inlet duct is arranged at the end of the rack, and an air outlet duct is arranged on the side wall of the rack. The impeller comprises a rear wheel disc, a front wheel disc and a plurality of blades, the blades are clamped between the rear wheel disc and the front wheel disc in an arc-shaped plate shape, the blades are rotationally and symmetrically arranged on the radial plane of the impeller in the circumferential direction, and an air inlet of the front wheel disc is opposite to the air inlet channel. The cutting angles of the air outlet ends and the air inlet ends of the blades are controlled within a certain angle range, and the noise influence is reduced while it is ensured that the blades have high air exhaust efficiency. The beveling design of the air outlet cutting edge and the air inlet cutting edge of the blade can improve the phenomenon of non-uniform airflow at the turning position, so that the circumferential speed of the airflow on different sections of the blade is changed, and the airflow at the front edge of the blade enters an impeller runner without impact as much as possible.

The invention discloses high-compactness low-resilience shotcrete and a preparation method thereof, and relates to the field of shotcrete, the preparation method comprises the following steps: (1) respectively stacking a cementing material, a fine aggregate and a coarse aggregate by adopting an MAA model to obtain a design ratio of each internal raw material; and (2) fully mixing the cementing material, the fine aggregate, the coarse aggregate and the elasticity reducing agent which are obtained according to the design ratio in the step (1), adding water and a water reducing agent for mixing, and doping an accelerator in a manner of mixing with pressurized air to obtain the high-compactness low-resilience sprayed concrete. The early-strength elasticity reducing agent is adopted, pumpability of the sprayed concrete is improved, early hydration of the concrete is accelerated, under the combined action of the early-strength elasticity reducing agent and the alkali-free accelerator, the early mechanical property of the sprayed concrete is rapidly improved, and the construction efficiency of the sprayed concrete is improved. And by adopting multi-section close packing, close filling structures are respectively formed in the cementing material, the fine aggregate and the coarse aggregate, so that the plastic viscosity of the slurry and the compactness of the concrete are effectively improved.

The invention discloses a check valve special for a centrifugal water pump and an implementation method, and aims to solve the problems of large water flow resistance, unstable sealing performance, high maintenance cost and the like of a check valve in a super-power centrifugal water pump in the prior art. The check valve comprises a valve body outer pipe, a filter screen, a valve element assembly, an overturning reset assembly and a moving assembly. The valve element assembly is in sliding connection with the inner wall of the valve body outer pipe through a moving assembly and is connected with the valve body outer pipe and the overturning valve element plate through an overturning reset assembly. According to the check valve, the overturning valve core plate is overturned to a vertical state through water flow suction of the centrifugal water pump, so that the valve core is opened, water flow resistance can be reduced by overturning the vertical state of the valve core plate, and water pump efficiency is improved; when the water pump stops, the valve element plate resets under the action of the spring and makes close contact with the sealing rubber gasket, and effective non-return is achieved. The check valve has the technical effects of reducing the water flow resistance, improving the sealing performance, enhancing the durability and being easy to maintain, and is suitable for various super-power centrifugal water pumps.

The utility model relates to a large-cavity vacuum pump set system which comprises a cavity, a rough vacuumizing pump set, a fine vacuumizing pump set, a pipeline set, a switch valve set, a pressure sensor and a control device, the pressure sensor is arranged on the cavity, and the rough vacuumizing pump set and the fine vacuumizing pump set are both connected and communicated with the cavity through the pipeline set. A switch valve group is arranged between the rough vacuumizing pump unit and the cavity, the control device is electrically connected to the pressure sensor, the rough vacuumizing pump unit, the fine vacuumizing pump unit and the switch valve group, and the control device controls opening and closing of the rough vacuumizing pump unit, the fine vacuumizing pump unit and the switch valve group according to data of the pressure sensor. Through matching and combination of pump sets in different forms, the working efficiency is improved, and the performance of the vacuum pump is utilized to the maximum extent, so that the pump sets stably operate in different pressure sections; the controller controls unit operation in different stages through data of the pressure sensor, so that the unit operation is optimal, the process pressure requirement is met, and energy saving is achieved.

The present application relates to the technical field of plunger pump, in particular to a variable stroke double cavity plunger pump, which comprises a shell and a driving motor, two delivery pipes are arranged in the shell, two groups of crankshaft assemblies are arranged on the output shaft of the driving motor, the shell is connected with the corresponding delivery pipe through the crankshaft assembly, and a first one-way valve and a second one-way valve are symmetrically arranged in the delivery pipe along the axis of the crankshaft assembly; the one-way valve comprises a reset assembly, a sealing assembly and a clamping assembly arranged in sequence from top to bottom, the sealing of the sealing assembly is realized by the elastic extension of the reset assembly and the adhesion of the clamping assembly; the sealing assembly on the first one-way valve is provided with a first negative pressure assembly, the sealing assembly on the second one-way valve is provided with a second negative pressure assembly, and the first negative pressure assembly and the second negative pressure assembly are oppositely arranged; by arranging the negative pressure disc and the connecting pipe, the stress area of the sealing ball under the negative pressure condition is increased, the opening speed is accelerated, and the fluid passing efficiency is improved.

This utility model relates to the field of vacuum pump technology and discloses a vacuum pump assembly, including a housing, a first vacuum pump and a second vacuum pump arranged inside the housing, the second vacuum pump being located directly below the first vacuum pump, the inlet end of the first vacuum pump passing through the housing and communicating with the outside, the outlet end of the first vacuum pump being connected to the inlet end of the second vacuum pump, and also including a silencing unit, the silencing unit being attached inside the housing and located directly below the second vacuum pump, one end of the silencing unit being connected to the outlet end of the second vacuum pump, and the other end communicating with the outside. This utility model, with the first vacuum pump, the second vacuum pump, and the silencing unit sequentially located directly above their respective units, has a compact structure and improves space utilization.

The application relates to the technical field of mechanical seals, and discloses a combined sealing water-cooling mechanical seal structure, which comprises a rear bearing seat end, a front bearing seat end, a positioning hole and a shaft groove. The inner sides of the rear bearing seat end and the front bearing seat end are provided with a pressure-bearing bearing mechanism which is used for replacing traditional bearings to reduce wear caused by vertical stress. The inner side of the pressure-bearing bearing mechanism is provided with a water-cooling cooling mechanism which is used for assisting heat dissipation. The periphery of the water-cooling cooling mechanism is provided with a sealing mechanism which is used for sealing and packaging structure. The pressure-bearing bearing mechanism comprises an inner bearing seat end, the two sides of the inner bearing seat end are provided with matching ring grooves, the side surfaces of the matching ring grooves are slidably connected with rotating shaft rings, and the two sides of the inner bearing seat end are slidably connected with eight roller shaft columns. The application enhances oil distribution uniformity, reduces local dry friction and heat accumulation, thereby comprehensively improving transmission efficiency, reducing maintenance frequency, and effectively preventing jamming and early fatigue failure.

The utility model relates to a water suction pump and a water suction test device, the water suction pump comprises a pump body, an outer pipe, an inner pipe, a first plugging part and a filtering part, the upper end of the outer pipe is fixedly connected with the inlet end of the pump body, the inner pipe is fixedly connected in the outer pipe, and the lower end of the inner pipe is used for being connected with a water inlet pipe; the outer surface of the inner pipe and the inner surface of the outer pipe form a drainage channel for draining water in the outer pipe, the first blocking part is detachably connected to the lower end of the drainage channel and used for blocking the lower end of the drainage channel, and the filtering part is arranged in the outer pipe and used for filtering water entering the pump body through the outer pipe. According to the water suction pump and the water suction test device, after water suction is stopped, the second plugging part seals the upper end pipe opening of the inner pipe, water flowing back to the designated water taking position from the inner pipe and the water inlet pipe is reduced, and water and impurities drained through the drainage channel are increased. The total amount of the impurities at the specified water taking position is reduced, the impurities entering the outer pipe from the specified water taking position are reduced during subsequent water pumping, the impurities blocking the filtering part are reduced, and the water pumping efficiency is improved.

The utility model provides a kind of vacuum bag type packaging sealing device, comprising: support;Workbench, it is fixedly installed on support upper end;Positioning plate, it is fixedly installed on support one side;Sealing group, it is set in workbench upper end;Limiting group, it is set in positioning plate one side.This kind of vacuum bag type packaging sealing device, by setting limiting group and the like structure, limiting group is conveniently operated by hydraulic rod, cooperate through-hole and connecting pipe, improve the efficiency of air extraction and connection stability, also have strong versatility;Heating plate can be detached in sealing group, it is convenient to maintain replacement, heating pipe and sealing plate cooperation realize reliable heat sealing, support rod guarantee pressing plate stability, electric telescopic rod realizes automatic sealing, reduce labor intensity, overall device is efficient, convenient, stable, can guarantee vacuum packaging quality, suitable for a variety of vacuum bag, improve the efficiency and reliability of packaging work.

The utility model relates to fire engineering technical field, concretely is a kind of emergency drainage device for fire-fighting equipment, including base, one floating plate is respectively installed in the both sides of base by pivot, the side of floating plate is equipped with mounting groove, the inside installation of mounting groove has air bag, the top of base is fixed with waterproof control box, one inflation telescopic pipe is respectively communicated in the both sides of waterproof control box, one end of inflation telescopic pipe extends into mounting groove inside and is connected with air bag inside.The utility model can drive two floating plates to deflect by the extension of two first cylinder output ends, so that the air bag installed in the side of floating plate is contacted with water surface, then the inflator installed in waterproof control box inside fills gas into the inside of air bag by inflation telescopic pipe, so that air bag volume expands, so that two air bags produce buoyancy and make the whole device float on water surface, avoid device to be submerged by accumulated water and appear fault when using, improve pumping efficiency.

The utility model belongs to the technical field of foam pumps, and particularly relates to a horizontal foam pump with a stable structure. Comprising a horizontal foam pump body, and a stable shockproof base is fixedly mounted on the horizontal foam pump body; the stable shockproof base comprises a base body located below the horizontal foam pump body, a groove is formed in the base body, a plurality of hydraulic cushioning mechanisms are evenly arranged in the groove, supporting seats are arranged on the hydraulic cushioning mechanisms, and the supporting seats make contact with the horizontal foam pump body. According to the utility model, through the principle of hydraulic shock absorption and the uniform distribution of hydraulic shock absorption, the horizontal foam pump can be subjected to all-directional shock absorption influence, so that the shock of the horizontal foam pump is better inhibited, meanwhile, the corresponding noise is reduced, the overall working environment is improved, and the service life of the horizontal foam pump is prolonged. And the performance stability and the pumping efficiency of the horizontal foam pump can be obviously improved.

The invention relates to the field of hydraulic tunnel drainage, and discloses a hydraulic tunnel drainage, filtration and separation device which comprises a bottom plate, a water storage tank is fixedly connected to the upper surface of the bottom plate, and a water pumping mechanism is fixedly connected to the position, located on the right side of the water storage tank, of the upper surface of the bottom plate; the water pumping mechanism comprises fixing plates, the number of the fixing plates is two, the bottoms of the two fixing plates are fixedly connected with the upper surface of the bottom plate, a hollow cylinder is fixedly connected between the two fixing plates, and a plurality of penetrating type water pumping holes are formed in the outer side wall of the hollow cylinder; the water pumping mechanism is provided with a plurality of water pumping pipes, so that water at multiple positions can be pumped at the same time, a sleeve can rotate along the outer side wall of a hollow cylinder, the water pumping pipes can be retracted and released, and during water pumping, a water pump is started, so that the water enters a water storage tank to be stored after passing through the water pumping pipes, a first hose and a second hose.

The present application relates to a wastegate for an engine system, and provides a method and system for a wastegate for a turbocharger, the wastegate including a valve plate, a valve actuation mechanism, and a bifurcated wastegate passage. In one example design, the wastegate may include a valve plate having an interior with a multi-planar curved surface and a first mating feature centered along the curved surface, the curved surface forming a raised edge and a side opening on opposite sides of the valve plate; and a passage bifurcated by a central wall, the end of the central wall including a second mating feature adapted to coplanarly contact the first mating feature. The first mating feature may be a rib or groove formed on the valve plate, and the second mating feature may be one end of the central wall.

The invention relates to the technical field of diaphragm pumps, in particular to a high-temperature-resistant single-runner diaphragm chamber which comprises a cooling pipe section, a diaphragm cavity and a diaphragm chamber gland installed on the diaphragm cavity, a diaphragm chamber is formed between the diaphragm chamber gland and the diaphragm cavity, and the two ends of the cooling pipe section are a high-temperature slurry end and a low-temperature slurry end respectively. The diaphragm cavity is provided with a feeding hole through which cooled slurry can enter or flow out of the diaphragm chamber from the bottom of the diaphragm chamber, the low-temperature slurry end is communicated to the feeding hole in the diaphragm chamber, and the high-temperature slurry end is used for receiving uncooled slurry; according to the diaphragm pump, on the premise that the form of the high-temperature slurry is not changed, direct pumping of the high-temperature and strong-corrosion slurry can be achieved, meanwhile, the effect of the high-temperature and strong-corrosion slurry on the diaphragm is effectively reduced, it is avoided that the diaphragm rapidly loses efficacy due to overtemperature and corrosion, and it is guaranteed that the diaphragm pump stably operates for a long time under the high-temperature and strong-corrosion working condition.