1911results about How to "Achieve sealing" patented technology

The invention provides a dynamic-fluid coupling effect induced earthquake simulation test device and a test method. The test device comprises a dynamic true triaxial electromagnetic Hopkinson bar system, a sealed loading system and a data monitoring and control system, wherein the dynamic true triaxial electromagnetic Hopkinson bar system is used for acting on a simulated fault sample and simulating a true triaxial stress state and multi-axis and multi-direction power disturbance of an underground fault; the sealed loading system is used for pressurizing and injecting fluid into the simulated fault sample and sealing the fluid under dynamic and static combined loading of the simulated fault sample; the sealed loading system is matched with the dynamic true triaxial electromagnetic Hopkinson bar system to load dynamic disturbance to a simulated fault sample containing fluid, simulate a fault stress state in an underground engineering project involving fluid activity and perform a dynamic-fluid coupling effect induced earthquake simulation test. According to the invention, the true triaxial stress state and the multi-axis and multi-direction power disturbance of the underground fluid-containing fault can be simulated.

A novel external electromagnetic valve assembly of a shock absorber comprises an electromagnetic assembly and a valve body assembly, a guide-in valve sub assembly of the valve body assembly adjusts flow through a throttling valve piece, then adjustment of damping bandwidth is achieved, and the electromagnetic assembly is matched with a pilot hole and a damping hole of a main valve element of the valve body assembly through an electromagnetically-driven conical rod. The damping force can be stably established, the concept is novel, the design is ingenious, the stable damping force can be rapidly provided, and the effect is remarkable.

The invention relates to the technical field of corrugated pipe air tightness detection, and discloses an air tightness detection device and a detection method for corrugated pipe quality inspection.The air tightness detection device comprises a detection machine table, fixed installation assemblies are arranged at the two ends of the upper portion of the detection machine table, a movable supporting frame is arranged between the fixed installation assemblies, and a corrugated pipe is located above the movable supporting frame; the fixed installation assembly comprises a fixed installation mechanism and a sealed installation mechanism, the two ends of the corrugated pipe are connected with the fixed installation mechanism and the sealed installation mechanism correspondingly, and the pressurization assembly is arranged on one side of the sealed installation mechanism. An air supply mechanism is introduced into the sealed installation end of the corrugated pipe through an air inlet mechanism in the pressurization assembly, at the moment, one end of the corrugated pipe is compressed and fixed through a movable supporting frame, the end, close to the sealed installation end, of the corrugated pipe is in an extending state, and therefore all corrugations of the end, close to the sealed end, of the corrugated pipe can extend; airtightness detection is difficult to carry out on the area between the corrugations in the compressed state, and missing detection is avoided.

The present invention discloses a shared suspended charging pile for new energy vehicles, and relates to the technical field of charging piles. The shared suspended charging pile for new energy vehicles comprises a mounting base, a slide is provided on the mounting base, a threaded rod is rotatably connected inside the slide, a first drive motor is fixedly installed on one side of the mounting base, an output end of the first drive motor is fixedly connected to the threaded rod, a moving block is slidably connected inside the slide, the inside of the moving block is threadedly connected to the surface of the threaded rod, a moving sealing box is fixedly installed on one end of the moving block away from the mounting base, so that the charging pile moves downward and moves to the top of the new energy vehicle, so that the position and height of the charging pile can be adjusted according to the needs of use, so that the new energy vehicle can be charged, the convenience of charging the new energy vehicle is improved, the space occupation is reduced, and the waste of the shared charging station area is reduced.

The invention belongs to the technical field of drying and grinding, and particularly relates to drying and grinding integrated equipment which comprises a rack, a smashing cylinder, a grinding pre-drying mechanism and a drying and discharging mechanism are sequentially mounted on the rack from top to bottom, and a feeding and smashing mechanism is arranged on the smashing cylinder and used for smashing materials to be ground; an upper hemispherical shell with a downward opening communicates with the crushing barrel, a lower hemispherical shell is connected to the lower portion of the upper hemispherical shell and communicates with the drying and discharging mechanism, the upper hemispherical shell and the lower hemispherical shell are connected to form a spherical shell, and a grinding ball is rotationally installed in the spherical shell; electric heating wires are arranged on the hemispherical upper shell, the hemispherical lower shell and the grinding ball; according to the grinding pre-drying mechanism, the phenomenon that wet materials adhere to the inner wall of the spherical shell or the surface of the ball wall of the grinding ball during grinding can be reduced, and then the phenomenon that the grinding pre-drying mechanism is blocked when grinding the crushed materials can be reduced.

The invention relates to the technical field of two-way sealing butterfly valves, in particular to a condenser cut cylinder two-way sealing butterfly valve which comprises a valve body, a valve rod and a valve plate, a driving cavity is formed in the valve body, the valve rod is sleeved with a transmission piece, two sliding blocks are arranged in the driving cavity, and expansion rings are arranged below the two sliding blocks. A runner is arranged between the expansion ring and the sliding block on the valve body; a first sealing groove is formed in the valve plate, the transmission piece is driven through rotation of the valve rod, and the two sliding blocks are driven to slide through the transmission piece. The sliding block moves to drive fluid in the flow channel to flow, the expansion ring is driven to expand towards the first sealing groove of the valve plate, the expansion ring is tightly attached to the first sealing groove through deformation, and sealing of the valve body is achieved. Compared with the prior art, through the more compact structure and space layout, a sealing mechanism is simplified, and the requirements of an external transmission assembly and a complex adjusting mechanism are reduced, so that the overall size of the valve is effectively reduced, and the problem that side space is occupied is avoided.

The invention relates to a low-temperature liquefied natural gas spray cooling performance test system and a test method, belongs to the technical field of low-temperature fuel spray cooling, and solves the problem that a test system and a test method for taking liquefied natural gas fuel as a spray cooling material are lacked in the prior art. And the performance of the liquefied natural gas fuel as the spray cooling material cannot be accurately analyzed. The test system comprises a double-layer structure spraying chamber, a nozzle, a heat source and a data acquisition system, lNG mist sprayed by the nozzle flows in the inner space of the double-layer structure mist spraying chamber; liquid nitrogen flows in the interlayer space of the double-layer structure spraying chamber and is used for low-temperature cooling of LNG spraying. According to the test system, a double-layer heat preservation structure is adopted, and the LNG partially gasified due to storage and transportation can be cooled by using low-temperature liquid nitrogen, so that the phase change heat absorption capacity of the LNG is exerted in spray cooling. And meanwhile, the influence of the external environment on the test result can be well isolated, and the external interference is reduced.

The invention discloses an integral type bearing seat and a machining process thereof, and relates to the technical field of sand mill bearing seats, and the integral type bearing seat comprises a fixed end cover, a movable end cover, a transmission shaft and a sealing assembly. The invention further discloses a machining process of the integral bearing seat. The machining process comprises the following steps of part machining, part assembling and product detecting. The fixed end cover and the movable end cover are arranged, the sealing assembly is arranged in the middle of the movable end cover, sealing between the sealing assembly and the transmission shaft can be achieved through a third-stage sealing ring in the sealing assembly, and sealing between the sealing assembly and the movable end cover can be achieved through a second-stage sealing ring in the sealing assembly; the first-stage sealing ring in the sealing assembly can achieve sealing between the filler seat and the sealing seat, sealing is conducted between the sealing assembly and the transmission shaft, between the sealing assembly and the movable end cover and between the filler seat and the sealing seat, the sealing effect of the bearing seat is guaranteed, and the service life of the bearing seat is prolonged.

The invention discloses a pavement water seepage instrument for highway construction monitoring and a detection method, the pavement water seepage instrument comprises a bottom plate, a water seepage instrument assembly, a purging assembly, a pavement sealing assembly and a sealing surface recovery assembly, the bottom plate is a circular panel, the middle of the bottom plate is provided with an opening, the opening is provided with an inner ring hole and an outer ring hole, the water seepage instrument assembly is arranged on the bottom plate, and the purging assembly is arranged on the bottom plate. Comprising a measuring cylinder, a liquid outlet pipe, a chassis and a water valve, the chassis is arranged in an inner ring hole in the middle of a bottom plate, the upper end and the lower end of the chassis both extend out of the inner ring hole, the upper end of the chassis is communicated with the liquid outlet pipe, and the top end of the liquid outlet pipe is connected with the measuring cylinder; the periphery of the bottom of the measuring cylinder is supported at the upper end of the bottom plate through a bracket; the purging assembly is arranged on the lower side of the bottom plate and comprises a high-pressure purging support, a purging head and a telescopic rod. The pavement water seepage instrument has the advantages that the pavement water seepage instrument is high in sealing performance, and pavement impurity blowing and sealing material recycling can be achieved.

The present invention discloses a sealing device of a rotary kiln and a rotary kiln, the sealing device comprises a moving ring and a stationary ring arranged between a cylinder and a kiln cover, the two are in contact with each other and rotate relatively to form a spherical-conical end face sealing pair, the moving ring is fixed on the cylinder on the side away from the stationary ring, the stationary ring is elastically and sealedly connected to the kiln cover through a compensator, and the stationary ring is connected to an axial force component on the circular ring end face close to the kiln cover. The rotary kiln comprises the above-mentioned sealing device. The sealing device of the present invention, under the joint action of the moving ring, the stationary ring, the compensator, the rotating pair, the sliding pair and the axial force component, can realize the continuous and effective sealing of the cylinder and the kiln cover of the rotary kiln, has the advantages of simple structure, convenient use, good adaptability, high reliability, good sealing effect, long service life, etc., can be widely used in equipment such as rotary kilns, and has important promoting significance for effectively improving the sealing effect of rotary kilns and promoting the widespread use of rotary kilns.

The utility model relates to the technical field of light control switches, in particular to a buried light control switch, which is arranged in a groove arranged on the ground and comprises a control switch body and a buried box outside the control switch body, and a boss extends from the outer edge of the upper end face of the buried box. A telescopic assembly is arranged in the buried box, the telescopic assembly is connected with the control switch body, the telescopic assembly comprises a plurality of telescopic cylinders, springs and telescopic rods, the telescopic cylinders are fixedly arranged at the bottom of the inner wall of the buried box, the springs and the telescopic rods are arranged in the telescopic cylinders, and the top of each telescopic cylinder is of an opening structure. The height of the control switch body is adjusted, so that after the sealing cover is opened, the control switch body can move to the outside from the inside of the underground box, and after the sealing cover is opened, the spring at the bottom of the control switch body stretches out and draws back to push the control switch body, so that the control switch body moves to the outside from the underground box. A worker can conveniently use the control switch body to turn on and turn off light.

The utility model relates to a battery shell, a battery, a battery pack and a power utilization system, the battery and the battery pack shell form the battery pack for supplying power to the power utilization system, and the battery shell of the battery comprises a shell body and a cover plate. Wherein the shell comprises an inner cavity, the inner cavity is provided with an opening, the cover plate is fixed on the shell, and the cover plate shields the opening of the inner cavity. At least one of the surface, facing the shell, of the cover plate and the surface, facing the cover plate, of the shell is provided with a first groove, a brazing seam is arranged between the cover plate and the shell, and the brazing seam is used for fixedly connecting the shell and the cover plate and sealing the inner cavity. The first groove is suitable for containing welding flux used for forming a brazing seam. The battery shell provided by the utility model adopts brazing, so that the welding difficulty is reduced, the manufacturing cost is reduced, and the residual stress and failure risk after welding are reduced.

The utility model relates to the technical field of gate valves, and discloses a flat gate valve capable of being vertically installed, which comprises a first pipeline, a valve body is fixedly connected in the first pipeline, a valve cover is fixedly connected at the top of the valve body, a valve seat is fixedly connected at the top of the valve cover, and a valve rod is rotatably connected in the valve seat. A hand wheel is fixedly connected to the exterior of the valve rod, a fixing box is fixedly connected to the bottom of the first pipeline, a motor is fixedly connected to the interior of the fixing box, a first rotating rod is fixedly connected to the driving end of the motor, and a driving bevel gear is fixedly connected to the exterior of the first rotating rod; connecting rods are fixedly connected to the inner walls of the front side and the rear side of the first pipeline, and a square box is fixedly connected to the sides, close to each other, of the two connecting rods. According to the gate valve, dust removal of the filter plate in the gate valve is achieved, then the surface of the filter plate is prevented from being blocked, and the service life of the filter plate is prolonged.

The utility model relates to the technical field of anti-permeability instruments, and discloses an automatic concrete anti-permeability instrument which comprises a test mold, and a buffer assembly is fixedly embedded in the bottom of the test mold; the buffering assembly comprises a buffering sleeve, a piston, a spring and a buffering pipe. A water seepage assembly is arranged in the test mold; the water seepage assembly comprises a water seepage disc, a sealing ring and a filter screen. According to the automatic concrete impermeability instrument, when a test piece is placed in a test mold, a water seepage assembly can be extruded to drive a piston to move downwards, through energy absorption of a spring and cooperation of the water seepage assembly to extrude a damper, buffering and energy absorption can be effectively conducted on the test piece, and damage to the test mold is avoided; according to the test mold, the gap between the test piece and the test mold can be sealed, a water source is prevented from seeping into the test mold from the gap, the test accuracy is improved, the water source can make uniform contact with the bottom of the test piece through the arranged water seepage disc and the formed water seepage groove, and the accuracy of the test result is further improved.

The utility model provides a box cover and a sealing box, and belongs to the technical field of food preservation boxes. The sealing ring is connected with the cover body, the sealing ring comprises an inclined part inclined inwards, and the inclined part can generate elastic deformation and can deform to a sealing state; when the inclined part is in a sealed state, a gap exists between the upper surface of the inclined part and the lower surface of the cover body, and the lower surface of the inclined part is located at an angle capable of being attached to a face to be sealed. And when the box cover reaches the sealing position from the contact position, the air pressure in the box is increased so as to assist the inclined part of the sealing ring in sealing.

The invention discloses a high-temperature and high-pressure fiber bragg grating temperature sensor system for the aerospace field, which comprises a sweep frequency light source, the sweep frequency light source is connected with a high-temperature and high-pressure fiber bragg grating temperature sensor through a circulator, the circulator is connected with a spectrum unit through an optical fiber coupler, and the spectrum unit is connected with a spectrum driving circuit through an optical fiber coupler. The spectrum driving circuit is connected with an AD conversion circuit through a PCI bus, the AD conversion circuit is connected with a control system through a PCI bus, and the control system is connected with an industrial control system through an RJ45 network cable. The invention further discloses a demodulation method of the high-temperature and high-pressure fiber bragg grating temperature sensor system for the aerospace field. The invention discloses a high-temperature and high-pressure fiber grating temperature sensor system for the aerospace field and a demodulation method, and solves the problem that the temperature field distribution of a storage tank cannot be measured in the pressurization process of a propellant in the storage tank of a spacecraft at present.

The present invention discloses a molecular sieve dryer for oilfield water-containing natural gas, and relates to the technical field of natural gas dehydration. The present invention comprises a bracket, wherein two groups of top rings are arranged on the top of the bracket, a rotating rod is rotatably installed on the top of the bracket, the rotating rod is driven by a motor, and both sides of the rotating rod are rotatably installed with a flip sleeve, and a molecular sieve storage cylinder is fixedly installed inside the two groups of flip sleeves, and multiple groups of partitions are arranged on the top and bottom of the molecular sieve storage cylinder. The present invention makes the molecular sieve storage cylinder transpose, and then controls the flip sleeve to rotate, the flip sleeve drives the molecular sieve storage cylinder to flip, and the upper connecting sleeve rotates to the bottom, and the molecular sieve inside the molecular sieve storage cylinder can be discharged into the collection bucket through the partition and the grid groove, and at the same time controls the rotation of the stirring shaft, and the stirring shaft accelerates the discharge of the molecular sieve through the stirring blade. After the molecular sieve is discharged, the flip sleeve is controlled to flip again, and the molecular sieve can be added again, and the molecular sieve can be quickly replaced.

The utility model discloses a safe waterproof wall socket, which relates to the field of wall sockets and comprises a socket body, two first jacks are arranged above the outer surface of the socket body, and a first protection assembly and a second protection assembly are respectively arranged on the outer surface of the socket body. The first protection assembly comprises a containing groove formed in one side of the first insertion hole. According to the utility model, through the arrangement of the first protection assembly, when the two-pin plug is inserted into the first jack, the plugging plate can move towards the interior of the storage groove under the pressure applied by the two-pin plug, and after the plugging plate moves into the storage groove, the plugging plate does not shield the first jack any more, and at the moment, the two-pin plug can be inserted into the first jack; meanwhile, the plugging plate moves to drive the first sliding block to slide in the first sliding groove and extrude the reset spring, so that the reset spring is compressed under stress, and after the two-pin plug is inserted, the plugging plate tightly extrudes the plug pins under the counter-acting force of the reset spring, so that the stability after the plug is inserted is improved.

The invention discloses an optical fiber connector and a plug, a socket, a pin component and a jack component thereof. The optical fiber connector comprises a flange plate I and a sleeve piece, a through cavity I is formed in the flange plate I along the central axis direction, the head end of the cavity I is used for accommodating and fixing the end part of a contact pin I, and the interior of the cavity I is blocked to realize sealing; a through cavity II is formed in the sleeve piece in the direction of the central axis, and an elastic piece is arranged in the cavity II; the tail end of the flange plate I penetrates through the elastic piece in the cavity II and extends outwards; the elastic piece is used for achieving axial floating of the flange plate I relative to the sleeve piece. The high-temperature-resistant and high-pressure-resistant sealed optical fiber connector can meet the requirements of a high-temperature and high-pressure environment in an inserted state and a separated state. The high-temperature and high-pressure sealing optical fiber connector is divided into a plug connector and a socket connector, the high-temperature and high-pressure environment requirement can be met in the plug-in state of the head and the socket, and the high-temperature and high-pressure environment requirement can be met when the head and the socket are separated.

The invention provides environment-friendly sewage treatment equipment based on microbial reaction. The environment-friendly sewage treatment equipment comprises an aerobic tank, a pretreatment box and a power storage assembly, the pretreatment box comprises a box body, the box body is connected with the aerobic tank, the box body is fixedly communicated with a drainage pipe, a bottom plate of the box body is provided with a group of drainage grooves, and an inverted T-shaped plate is connected in the box body; the power storage assembly comprises a main shaft, and the main shaft is in bearing connection with the box body. The invention relates to the technical field of sewage treatment, in particular to environment-friendly sewage treatment equipment based on microbial reaction. In order to overcome the defects in the prior art, the environment-friendly sewage treatment equipment based on the microbial reaction is developed, microbial degradation and a biological membrane technology are conveniently and organically integrated, sewage is fully contacted with an MBR membrane in an MBR membrane area to be treated for a period of time, and then the sewage is contacted with a microbial population to be treated. The environment-friendly treatment on the sewage is realized, and the sewage treatment efficiency is improved.

The invention discloses a voltage transformer based on mixed gas, and belongs to the technical field of voltage transformers, the voltage transformer comprises a voltage transformer main body, a gas injection pipe and a sealing assembly, the gas injection pipe is integrally formed at the bottom of the voltage transformer main body, and the voltage transformer main body is filled with insulating gas; the insulating gas comprises sulfur hexafluoride gas and nitrogen; the sealing assembly comprises an inner conical barrel, a connecting structure, a rubber part and a conical column, the rubber part sequentially comprises a hemispherical head part, a first conical ring part, a connecting part and a second conical ring part from the center to the edge, and the second conical ring part is located on the outer side of the first conical ring part; a connecting base is fixed to the end of the conical column, and the connecting structure is used for driving the connecting base and the inner conical barrel to get close to each other in the axial direction of the gas injection pipe. The sealing performance of the gas injection pipe can be improved.

A lithium battery diaphragm extraction device belongs to the technical field of diaphragm production devices. The lithium battery diaphragm extraction device comprises an extraction tank, and a baffle is arranged in the extraction tank. The space in the extraction tank is separated by the baffle plate, so that extraction cavities are formed on two sides of the baffle plate; at least one end, close to the side wall of the extraction tank, of the top of the baffle is provided with a first overflow port, an overflow channel is further arranged in the baffle and perpendicularly penetrates through the baffle, an inlet of the overflow channel is located in the middle of the top of the baffle, and an outlet of the overflow channel is located below the inlet of the overflow channel. When the lithium battery diaphragm extraction device is used for carrying out an extraction process on the diaphragm, fluid in the extraction cavity overflows through the first overflow port and the overflow channel which are arranged at the baffle plate, so that extracted pore-forming agents such as paraffin oil can be fully separated from extract liquor, and the extraction quality is further improved.

The utility model relates to the technical field of electric toothbrushes, in particular to a handle and an electric toothbrush. The utility model relates to a handle, which comprises a machine shell, a handle, a handle, a handle and a driving device, and is characterized in that the machine shell is provided with an extending hole; the machine core assembly comprises a machine core and a motor shaft arranged on the machine core, the machine core is arranged in the machine shell and located in the inner cavity, and the motor shaft is exposed out of the machine shell through the extending hole and used for being connected with the brush head; the sealing assembly is arranged at the extending hole and comprises a first sealing piece, a second sealing piece and a supporting piece, the first sealing piece is arranged on the motor shaft in a sealing and sleeving mode, and the second sealing piece is arranged on the motor shaft in a sleeving mode, abuts against the inner wall of the machine shell in a sealing mode and is disconnected from the first sealing piece; the supporting piece is annularly arranged on the motor shaft in a sleeving mode and clamped between the first sealing piece and the second sealing piece in a sealed mode. According to the handle provided by the utility model, the sealing assembly cannot be damaged by twisting or pulling, so that the waterproof performance is better.

The invention discloses a waste lithium battery electrified recovery system, and relates to the field of waste lithium battery recovery, the waste lithium battery electrified recovery system comprises a flame detection system, a temperature monitoring system, an oxygen content monitoring system and a primary double-shaft shredding machine, and further comprises a nitrogen charging system used for charging nitrogen into the primary double-shaft shredding machine; the explosion venting assembly is arranged on one side of the first-stage double-shaft shredder shell and can discharge impact force gas generated by battery explosion to the outside of the box body; the explosion venting assembly comprises an explosion venting cylinder which is arranged on one side of the first-stage double-shaft shredding machine shell; when a flame detection system detects flames, the parallel four-connecting-rod mechanism is controlled to enable the limiting relieving piece to relieve limiting of the limiting block and the sliding limiting piece, under the guiding effect of the guide column and the elastic force effect of the free spring, the explosion venting frame moves towards the side away from the explosion venting barrel, and therefore the explosion venting frame is opened, and active explosion venting is achieved.

The utility model relates to the technical field of electronic product detection, and discloses a wireless signal shielding box, which comprises a main body, a cover plate and a top groove, the top groove is internally provided with a sealing assembly used for blocking a gap between the main body and the attaching face of the cover plate, the sealing assembly comprises an abutting body, a deformation groove, a notch and a contact rod, the abutting body is located in the top groove and elastically connected with the main body, and the top face of the abutting body is provided with the deformation groove and the notch which are communicated with each other; the top face of the abutting body forms a petal-shaped structure through the deformation groove and the notch and abuts against the inner side wall face of the main body, the abutting body is elastically connected with the main body, when the cover plate and the main body are closed to form the sealed box body, the abutting body can abut against the bottom face of the cover plate, and then the gap between the attaching face of the cover plate and the attaching face of the main body is made up. Therefore, the sealing performance of the whole box body is guaranteed, the probability that the detection precision is affected by a shielding gap caused by a gap formed between the cover plate and the main body is reduced, and the detection precision is guaranteed.

The present invention discloses a modular automatic hatch, comprising a hatch cover module, a cabin frame module, a linkage module and a drainage module; the hatch cover module comprises a cover plate, a reinforcing rib, a side plate and a hinged seat; the cabin frame module comprises a door frame, a fixing platform, a watertight strip and a sealing belt; the linkage module comprises an active arm, a driven arm, a main fixed seat, a slave fixed seat, a hydraulic cylinder, a synchronous valve, a hydraulic pipe, a limit switch, an angle sensor and a processor; the cabin frame module is installed at the entrance of a hull cabin, the hatch cover module is connected to the cabin frame module through a linkage module, and when the linkage module is actuated, the hatch cover module is driven to actuate to realize automatic opening or closing of the hatch door; the drainage module comprises a water pump, a drainage pipe and a float switch, which is mounted on one side of the cabin frame module, and can timely drain the accumulated water in the hull cabin. The present invention has a simple structure, can block waves from entering the cabin when closed, can timely drain the accumulated water, and is suitable for protecting the hull waterfront cabin.

The utility model relates to the field of electrical engineering, in particular to a leading cable, an electric device, a motor and an electric vehicle. The leading cable is installed on an electric device and at least comprises a wire harness which at least comprises a plurality of electric wires formed by a plurality of power supply wires connected with an external power supply; the isolation sealing sleeve is sleeved on the wire harness and is provided with a plurality of wire holes for isolating and accommodating electric wires; the protection sealing sleeve is arranged on one side close to the power utilization device and is provided with a coating part which sleeves the outer side of the isolation sealing sleeve and an extension part which extends from the coating part to the direction far away from the power utilization device; a step part is arranged between the wrapping part and the extension part, and the fastener abuts against the step part, so that the wrapping part of the protection sealing sleeve is in interference fit with the power utilization device, and accumulated water is prevented from entering the power utilization device through a connection gap between the leading cable and the power utilization device.

The utility model belongs to the technical field of motor vehicles and air filters, and particularly relates to an air filter silencing exhaust pipe and an air filter. The exhaust pipe comprises a flexible pipe body and a rigid pipe body which are connected together; the rigid pipe body comprises an inner pipe body and an outer cover body covering the inner pipe body, a plurality of spacing plates arranged in the extending direction of the inner pipe body are arranged in a gap formed between the inner pipe body and the outer cover body, and a resonant cavity is formed between every two adjacent spacing plates; at least one opening corresponding to each resonant cavity is formed in the pipe wall of the inner pipe body, and the inner space of the inner pipe body is communicated with the resonant cavities. According to the air filter exhaust pipe, the sound wave interference principle is utilized, noise of different frequencies generated when airflow passes through is effectively reduced, the exhaust pipe is allowed to adapt to a complex installation path, and the air filter exhaust pipe can be conveniently installed in a narrow or irregular engine compartment. On the basis, the utility model further provides an air filter which has a good noise reduction effect, sealing performance and adaptation performance.

The utility model relates to the technical field of air separation devices, in particular to a demister for an air separation device, which comprises a demister body, the demister body is applied to an evaporator, the inner wall of the evaporator is fixedly connected with a support block, the inner side of the evaporator is provided with a demister body, and the demister body is lapped on the upper surface of the support block. Through rotation of the worm, the gear can rotate under the action of the worm, the rotating rod drives the scraping plate to rotate, the scraping plate rotates and rubs the lower surface of the first silk screen plate, foam on the first silk screen plate can be broken, attachment of the foam on the first silk screen plate can be reduced, and the service life of the first silk screen plate is prolonged. The foam can be better separated from dropping liquid, the defoaming efficiency and effect can be improved, meanwhile, a second silk screen plate can rotate along with the second silk screen plate under the action of a rotating rod, overlapping and dislocation of holes of the second silk screen plate and holes of a first silk screen plate are achieved through rotation of the second silk screen plate, and the foam can be better broken.

The utility model relates to the field of construction equipment, in particular to a building ground crack pouring repairing machine. According to the technical problems, a repairing material is conveyed to a crack through a pipeline, after repairing is completed, remaining materials exist in the pipeline, after the materials make contact with air, due to the fact that the materials react or are cooled, the materials can be solidified in the pipeline, and the pipeline is blocked; according to the technical scheme, the building ground crack pouring repairing machine comprises a connecting assembly, a fixing assembly, a pouring assembly and a dredging assembly; compared with the prior art that repairing materials are conveyed to cracks through a pipeline, after repairing is completed, remaining materials exist in the pipeline, and after the materials make contact with air, due to the fact that the materials react or are cooled, the materials can be solidified in the pipeline, and the pipeline is blocked, the filling repairing machine is provided with the sealing structure, on one hand, the pipeline can be sealed, and on the other hand, the pipeline can be sealed; and meanwhile, the material in the pipeline port can be extruded out, the pipeline port is prevented from being blocked, and the reliability of the device is improved.