751results about How to "Guaranteed sealing performance" patented technology

The utility model provides a self-positioning and antifouling flat gate valve which comprises a valve body, a valve cavity and a medium channel communicated with the valve cavity are arranged in the valve body. A left valve seat and a right valve seat are arranged at the intersection of the medium channel and the valve cavity, a gate plate is connected between the left valve seat and the right valve seat, the gate plate is matched with the left valve seat and the right valve seat in a sealing mode, and the gate plate is driven by a valve rod to move up and down. A spring hole is formed in the position, in axial contact with the valve body, of the valve seat, and a spring is installed in the spring hole. A positioning block is arranged in the valve body and is coaxial with the gate plate in the longitudinal direction, and a positioning groove matched with the positioning block is formed in the bottom of the gate plate. And the scraping plate is installed in the valve body and arranged at the upper end of the valve seat, and the valve rod is arranged on the scraping plate in a penetrating mode. The spring is arranged at the axial contact position of the valve seat and the valve body, sealing of the valve seat and the gate plate is kept, abrasion to the sealing face of the valve seat is reduced, and the service life of the gate valve is prolonged. And the scraping plate removes dirt on the surface of the gate plate, and the sealing performance of the gate valve is improved.

The invention discloses a pressure-balanced floor drain, and relates to the technical field of floor drains. The technical scheme thereof is as follows: the floor drain comprises a cylinder and a reset device, wherein the upper end of the cylinder is a water inlet, the lower end of the cylinder is a water outlet, the reset device is arranged at the lower end of the cylinder, a sealing cover is arranged between the reset device and the cylinder, the reset device can apply a pre-tightening force to the sealing cover, so that the sealing cover is close to the water outlet and seals the water outlet, a stroke chamber is arranged on the sealing cover, a through hole 1 connected to a sewer pipe is arranged below the stroke chamber, a through hole 2 connected to the outside is arranged above the stroke chamber, a floating member is arranged in the stroke chamber, and the floating member can seal the through hole 1 by its own gravity. The floating member rises under the action of the air pressure difference, so that the air pressure of the lower sealing section is the same as or close to the outside air pressure, so as to ensure that the sealing cover can move up and down normally, and achieve the purpose of relatively smooth discharge of accumulated water at the water inlet.

The utility model discloses a spiral baffle plate punching die adsorbing and chip collecting device, and belongs to the field of spiral baffle plate production equipment. According to the technical scheme, the spiral baffle plate punching die adsorbing and chip collecting device comprises a lower die and an upper die which are sequentially arranged from bottom to top, a stamping cavity is formed in the upper end of the lower die, and a material collecting cavity is formed below the stamping cavity; according to the punching device, the negative pressure mechanism is started, so that outside air enters the punching cavity through the air channel to blow and clean punching scraps attached to the surfaces of the punching assembly and the punching template, the cleaned scraps enter the material collecting cavity along the hole channel along with airflow to be collected, and the punching assembly and the punching template can be cooled when the airflow enters the punching cavity; the service life of the punching assembly and the punching die plate is prolonged, and after the waste materials and the chippings in the material collecting cavity are collected to a certain amount, the material collecting cavity can be opened to clear out the waste materials and the chippings.

The utility model discloses a battery box body, a battery and a power utilization device, the battery box body comprises a first box body, a second box body, a first sealing piece and a first fastening piece, the first box body and the second box body are in sealing connection to form a sealing cavity, the first box body comprises a first sealing surface, and the second box body comprises a second sealing surface; the first sealing face and the second sealing face are matched to form a sealing interface, and the first sealing piece is arranged on the sealing interface to seal the first sealing face and the second sealing face. The first fastener penetrates through the first sealing face and the second sealing face to connect the first sealing face and the second sealing face to clamp the first sealing piece, so that the first sealing face and the second sealing face are connected in a sealed mode, the first fastener is completely located on the outer side of the sealing cavity, and the first fastener is located on the side, away from the sealing cavity, of the first sealing piece in the extending direction of the sealing interface. And when a certain first fastener or a small number of first fasteners fail, the sealing performance of the battery box body is still maintained, the failure risk is reduced, and the working safety is improved.

The invention discloses a gearbox shell airtightness detection device, and relates to the technical field of automobile part detection, the gearbox shell airtightness detection device comprises an operation table, the operation table is divided into an upper layer and a lower layer, two electric sliding rails are fixedly installed on the upper layer of the operation table, and two sealing shells are installed between the two electric sliding rails and the operation table through adjusting structures; the two sealing shells are symmetrically arranged, a gearbox is jointly installed in the two sealing shells in a clamped mode, and an oxygen filling structure used in cooperation with the gearbox and an argon filling structure used in cooperation with the two sealing shells are installed on the operation table. The gearbox leakage point detection device has the advantages that the gearbox is sealed in a relatively small space for a vacuum simulation experiment, the use amount of argon is reduced, the existence position of a gearbox leakage point is accurately observed and the leakage point is rapidly positioned by using an oxidation discoloration test of iron ions, and the accuracy and the detection speed of gearbox leakage point detection are improved.

The invention relates to the technical field of generators, in particular to a vortex-free air cooling mechanism for a generator, which comprises an air cooling device body, an air supply cylinder is fixedly arranged on the air cooling device body, an air cylinder ring plate is fixedly arranged at the cylinder opening of the air supply cylinder, and a supporting bottom frame is fixedly arranged at the lower end of the air cooling device body. A threaded matching rod is fixedly arranged on the inner side of the supporting bottom frame, a matching top disc is fixedly arranged at the upper end of the threaded matching rod, an inserting movable hole is formed in the matching top disc, and when the air cooling device body is installed, positioning of the air cooling device body is achieved through matching of the supporting bottom frame and the positioning installation frame; and then the air supply barrel and the air inlet connecting pipe can be connected in a sealed mode by rotating the rotary driving ring, meanwhile, the air cooling device body can be fixedly installed on the generator body, two purposes are achieved, the air cooling device is very convenient and rapid to use, the air cooling device body can be rapidly assembled and disassembled, and working of workers is facilitated.

The utility model belongs to the technical field of new energy vehicle charging, and discloses an alternating current and direct current integrated charging socket which comprises a square plate, an alternating current socket assembly and a direct current socket assembly are arranged on the square plate, the alternating current socket assembly comprises an AC insulator, an AC tail cover is arranged on the rear side of the AC insulator, and an AC circuit board is arranged in the AC tail cover. The AC circuit board is provided with five AC power contacts, two pin contacts and four chip resistors, the DC socket assembly comprises a DC insulator, the rear side of the DC insulator is provided with a pressing plate, the DC insulator is internally provided with a DC circuit board, the DC circuit board is provided with two DC power contacts and six pin contacts, the DC power contacts are provided with temperature sensors, and the temperature sensors are provided with temperature sensors. And the six pin contacts and the two temperature sensors on the DC circuit board are communicated to the ten-core low-voltage plug-in. The signal pin of the charging gun is in direct contact with the circuit board, signals are collected by the circuit board and then are connected with an automobile control system through a signal line, signal transmission can be carried out without redundant parts and wire harnesses, the structure is simple, and assembly is easy.

The invention relates to the field of tire regeneration, and provides a waste tire regeneration pyrolysis rotary kiln, which is characterized in that an inclined rotary kiln cylinder with a low left part and a high right part is arranged, a feeding mechanism is arranged at the right end of the rotary kiln cylinder for feeding, and a discharging mechanism is arranged at the left end of the rotary kiln cylinder for discharging, so that small waste tire blocks with crushed and magnetically separated steel wires are fed; the kiln can move to the left end under the action of gravity, and materials in the kiln can reach the temperature required by pyrolytic reaction through heating of the heating cover; a combustor is arranged at the bottom end of the side, close to the feeding mechanism, of the heating cover, downstream heating is achieved in cooperation with inclined arrangement, the rotary kiln barrel is provided with a spiral annular rib plate to be matched with a diffusion mechanism distributed on the inner wall of the heating cover, hot airflow in the heating cover is guided to be evenly diffused, and local overheating is prevented.

The invention relates to the field of automatic carrying equipment, in particular to an automatic robot capable of carrying objects. Comprising a base, a mechanical arm is arranged at the upper end of the base, a base plate is fixedly arranged on a rotating mechanism at the front end of the mechanical arm, two transverse moving assemblies are arranged on the base plate, a rotating assembly is arranged on each transverse moving assembly, an adsorption assembly is arranged on each rotating assembly, and a clamping assembly is arranged on each adsorption assembly. Through cooperative work of the transverse moving assembly, the rotating assembly, the adsorption assembly and the clamping assembly, the applicability of the device can be effectively improved, the device can be suitable for carrying work of various environments, various objects and objects in different shapes, and a user can select according to actual conditions.

The utility model discloses a crawler belt structure for a pneumatic crawler belt type drill carriage, and belongs to the technical field of crawler belt type drill carriages. A crawler belt structure for a pneumatic crawler belt type drill carriage comprises a chassis body, and crawler belt bodies are arranged on the two sides of the chassis body. According to the crawler belt structure for the pneumatic crawler belt type drill carriage, an external steel pipe is inserted into a rotating rod through a movable groove, a rotating disc rotates through pressing of a human body, then a threaded rod rotates towards a sealing barrel, a connecting rod rotates to drive an ejector block to move, and at the moment, a telescopic rod stretches out under the thrust of the ejector block to adjust a tensioning device; when the air cylinder body is damaged, the tensioning degree of the crawler belt body is kept, in the walking process of the crawler-type drill carriage, large noise is avoided, clearance fit between the crawler belt body and the walking gear ring is guaranteed, abrasion between the crawler belt body and the walking gear ring is reduced, and the service life of the crawler-type drill carriage is prolonged. And the service life of the track body is prolonged.

The utility model relates to a connector sealing uncovering structure and a bending type opening connector, the connector sealing uncovering structure comprises an insulation cap used for plugging an opening at one side of a connector housing, and the periphery of the insulation cap is sleeved with a sealing rubber ring used for realizing radial sealing between the insulation cap and the opening. The tail end of the insulating cap and the cover plate are detachably connected or integrally designed, and the insulating cap is detachably fixed on the connector shell through the cover plate. According to the utility model, the insulation cap and the sealing rubber ring are preassembled, the insulation cap and the cover plate are detachably connected, and the insulation cap, the sealing rubber ring and the cover plate are fixed on the connector shell after being connected into a whole, so that the assembly and disassembly are convenient, the movement of the insulation cap can be avoided, and the sealing performance of the connector is ensured.

The waterproof bulb lamp holder structure comprises a bulb lamp holder base and a bulb lamp holder connecting pipe, a plurality of fixing holes are formed in the portion, on the outer side of the bulb lamp holder connecting pipe, of the bulb lamp holder base at equal intervals, and a limiting plate is fixed to the end, away from the bulb lamp holder base, of the bulb lamp holder connecting pipe. A fixing sleeve is connected to the portion, between the limiting plate and the bulb lamp holder base, of the bulb lamp holder connecting pipe in a threaded and sleeved mode, and a sealing cover is fixed to the outer surface of the fixing sleeve. By means of the movable sealing cover, when the bulb lamp holder is used, a bulb lamp is screwed into the bulb lamp holder connecting pipe, then the sealing cover is screwed to abut against the upper surface of the bulb lamp to be attached to the bulb lamp, sealing of the joint of the bulb lamp holder connecting pipe and the bulb lamp can be guaranteed, water is prevented from entering the bulb lamp holder connecting pipe, and the problem that an existing bulb lamp holder is poor in waterproof performance is solved. And the service life of the lamp holder main body can be better guaranteed while the lamp holder main body is prevented from being damped and rusted.

The invention discloses a plasma sewage treatment device and a treatment method thereof, and relates to the technical field of sewage treatment devices.The plasma sewage treatment device comprises a barrel, a reaction box and a bottom cover, the reaction box is installed at the top of the barrel, the bottom cover is installed at the bottom of the barrel, and a filtering and purifying mechanism, a power mechanism and a plasma releasing mechanism are arranged in the barrel; a mixing chamber and a control chamber are further arranged in the reaction box, the barrel communicates with the mixing chamber, a filter screen is installed at the connecting position of the barrel and the mixing chamber, a discharge pipe is installed at the top end of the side face of the mixing chamber, and a plasma generation device is arranged in the control chamber. When mixed bubbles of the plasma and the gas are in contact with the filter disc, the bubbles can be scattered, so that the plasma and the sewage can be fully contacted and mixed conveniently, organic pollutants in the sewage can be decomposed, and the filter disc can also play a role in blocking and filtering impurities.

The utility model discloses a fluororubber sealing rubber nail structure of a power battery. The fluororubber sealing rubber nail structure comprises a rubber nail and an aluminum nail, the plastic nail is inserted into the liquid injection hole, and the end part of the plastic nail is positioned in the countersunk groove of the liquid injection hole; the aluminum nail is welded and fixed in the countersunk groove of the liquid injection hole, the aluminum nail and the countersunk groove of the liquid injection hole clamp the end of the rubber nail, and the compression amount of the end of the rubber nail is 25%-40%. According to the fluororubber sealing glue nail structure of the power battery, double sealing of the glue nail and the aluminum nail has a better sealing effect, the compression amount of the glue nail is 25%-40%, the glue nail has a better sealing effect on a liquid injection hole, welding slag can be prevented from permeating into a battery cell when the aluminum nail is welded, and the sealing effect is good. And when the welding of the aluminum nail fails, the sealing can be ensured by the rubber nail.

The invention belongs to the technical field of sprayers, and particularly discloses a water-saving water and fertilizer sprayer which comprises a movable chassis, one side of the top of the movable chassis is fixedly connected with a liquid storage tank, the liquid storage tank is used for storing liquid, the top of the liquid storage tank is fixedly connected with a mounting seat, and the mounting seat provides a mounting position. The top of the mounting seat is fixedly connected with a motor, the motor is used for providing power for the device, the output end of the motor is fixedly connected with a rotating shaft, the rotating shaft is used for transmitting power, and a pressurizing mechanism is arranged outside the liquid containing tank and used for pressurizing the interior of the liquid containing tank. According to the water and fertilizer sprayer, through cooperation of the pressurizing mechanism and the stirring and cleaning structure, water and fertilizer can be stirred, meanwhile, air can be filled into the liquid containing tank, therefore, air pressure in the liquid containing tank can be used for providing power for spraying of the water and fertilizer, then use of a power unit can be reduced, and the production cost of the water and fertilizer sprayer is reduced.

The utility model discloses an explosion-proof oil-immersed current transformer, which belongs to the technical field of oil-immersed current transformers and comprises an insulating porcelain bushing, a flange A is mounted at the bottom end of the insulating porcelain bushing, an expander is mounted at the top end of the insulating porcelain bushing, an oil tank is mounted at the bottom of the flange A, a flange B is mounted at the top of the oil tank, and the flange B is mounted at the bottom of the oil tank. And two sides of the outer wall of the flange B and two sides of the outer wall of the flange A are respectively provided with an annular sealing element. The structure is reasonable, through the arrangement of the annular sealing elements and the protective coating mechanism, the flange B on the oil tank is assembled on the flange A below an insulating porcelain bushing on the oil-immersed current transformer, and the oil-immersed current transformer is assembled on the oil tank through the annular sealing elements; and the annular sealing element is matched with the sealing ring A and the sealing ring B to seal the flange A and the flange B, so that leakage at the mounting position of the oil tank and the insulating porcelain bushing after mounting is avoided as much as possible, the sealing aspect is guaranteed, and the possibility that the oil-immersed current transformer is easy to explode is effectively reduced.

The packaging container comprises a first container with a first containing cavity, and a sealing film is arranged at an opening of the first container; the second container is provided with a second accommodating cavity; the butt joint sleeve is fixed to the opening end of the second container, and the butt joint sleeve is provided with a connector part and a connection channel; the device is characterized by further comprising a puncturing part which is fixed on the butt joint sleeve and is positioned in the interface part; the piston is movably arranged in the connecting channel; the connector part is operably arranged on the first container in a sleeving mode, the first container moves in the directions of the puncturing part and the piston, so that the sealing film is punctured by the puncturing part, the first container further pushes the piston to move in the direction away from the first container to open the connecting channel, and communication of the first containing cavity and the second containing cavity is achieved. And the puncturing part and the piston are independently arranged, so that the puncturing part and the piston are punctured and then opened during use, and two materials can be better and conveniently mixed.

The embodiment of the invention provides an instrument sealing device, a surgical instrument and a surgical robot. The instrument sealing device comprises a joint seat, the joint seat is provided with a first through hole, and the first through hole is configured to allow a cable to penetrate through; the sealing piece is arranged on the side, away from the instrument head end, of the joint seat, a second through hole is formed in the sealing piece, at least part of the first through hole is communicated with the second through hole, and the hole wall of the second through hole is configured to be in close contact with the peripheral wall of the cable; and the pressing piece is pressed on the side, back on to the joint seat, of the sealing piece, the pressing piece is at least pressed on the hole edge of the second through hole, and the hardness of the pressing piece is larger than that of the sealing piece. According to the instrument sealing device, the surgical instrument and the surgical robot, the sealing performance of the surgical instrument can be improved, pneumoperitoneum failure is prevented, the problem that the instrument control precision is reduced due to cable looseness caused by long-time use can be solved, and the surgical safety and the operation precision can be improved.

The utility model discloses a thermal recovery pipeline connecting device, which relates to the technical field of oil field steam injection and comprises a communicating pipe, a first connecting pipe, a second connecting pipe, a first elastic ring, a second elastic ring, a first elastic hoop and a second elastic hoop. The first end of the first connecting pipe is used for being fixedly connected and communicated with one end of the air inlet main pipe, and the first elastic hoop can clamp the second end of the first connecting pipe, the first elastic ring and the first end of the communicating pipe; the first end of the second connecting pipe is used for being fixedly connected and communicated with one end of the main exhaust pipe, and the second elastic hoop can clamp the second end of the second connecting pipe, the second elastic ring and the second end of the communicating pipe; a series of problems caused by length expansion and contraction due to temperature change of the pipeline can be eliminated, and the service life of the thermal recovery pipeline is prolonged.

The utility model discloses a sealed type oil storage component and an electronic atomization device, the sealed type oil storage component comprises an oil cup shell, a heating wire component and an oil cup base component, the heating wire component comprises cylindrical oil storage cotton, a heating wire, a core cylinder cover and an oil separation sealing piece, the upper end of the oil cup shell is provided with a cigarette holder part in an extending mode, and the cigarette holder part is arranged in the oil cup base component. The opening end of the cigarette holder part extends inwards to be provided with an internal cigarette holder channel; the periphery of the heating wire is sequentially sleeved with cylindrical oil storage cotton and a core cylinder cover, and an oil inlet hole is formed in the side wall of the lower end of the core cylinder cover; the oil separation sealing piece comprises a bottom sleeve which is arranged on the periphery of the core cylinder cover in a sliding and sleeving mode, and the upper end of the bottom sleeve is integrally connected with a cylinder end plate. The electronic cigarette is reasonable in structural design, tobacco tar can be completely separated from an internal cigarette holder channel through the tar separation sealing piece, and the sealing quality of the tobacco tar can be effectively guaranteed; on the other hand, the oil separation sealing piece serves as a hollow conduction channel in the subsequent use process, so that atomized smoke can be guided out.

The utility model discloses a new energy automobile high-voltage wire harness airtightness test tool comprising a support, a pedestal arranged at the bottom of the support, an air pressure detection assembly arranged at the left side above the pedestal, a fixing block arranged in the air pressure detection assembly, and a connecting hole arranged above the fixing block. The air pressure detection assembly is fixedly connected with the base through bolts, the new energy automobile high-voltage wire harness air tightness test tool supplies power through a power line, accurate positioning of the wire harness can be ensured through the positioning holes, the wire harness can be accurately installed on equipment or a structure, and alignment and installation of the wire harness and the equipment or the structure are simpler, more convenient and more reliable through the positioning holes. The problem that the position of the wire harness deviates or swings is avoided, the sliding rod is in sliding connection with the inner cavity, the problem that when the new energy automobile high-voltage wire harness airtightness testing tool is used, pressurization is directly conducted without fixing the wire harness, and safety accidents are likely to happen due to wire harness dislocation is solved, and the safety of the device is improved.

The utility model belongs to the technical field of coal mine gas extraction, and particularly relates to a coal mine gas extraction device which comprises a base, and adjustable roller plate structures are hinged to the two sides of the base respectively. The top face of the base is fixedly connected with a shell, the inner side of the shell is vertically and slidably connected with a sliding seat, the shell is provided with a sliding seat driving structure, the sliding seat driving structure is in transmission connection with the sliding seat, the inner side of the middle of the sliding seat is rotationally connected with a drilling cylinder structure, the sliding seat is provided with a drilling cylinder driving structure, and the drilling cylinder driving structure is in transmission connection with the drilling cylinder structure. The top end of the sealing cylinder penetrates through the base. The drilling cylinder structure vertically corresponds to the sealing cylinder. The bottom face of the elastic sealing structure is connected with the top end of the sealing cylinder in a sealed mode. By means of the structure, the coal mine gas extraction device is better in gas sealing effect, higher in safety, simple in structure and easy to use.

The invention relates to the technical field of gas storage chamber sealing, in particular to a connector structure of a gas storage chamber sealing layer, the sealing layer and a gas storage chamber, the connector structure comprises two connecting plates arranged oppositely and fasteners installed on the two connecting plates, the two connecting plates are connected with the sealing layer in a sealed mode, and the two connecting plates are connected with the sealing layer in a sealed mode. A first sealing piece and a second sealing piece which are in butt joint are arranged between the two connecting plates, and the fastening piece penetrates through the two connecting plates and the first sealing piece to clamp the first sealing piece and the second sealing piece between the two connecting plates. The sealing joint structure can be arranged at the seam of the chamber sealing layer, the first sealing piece and the second sealing piece are arranged between the connecting plates, and the second sealing piece and the first sealing piece can jointly fill the gap between the two connecting plates; and the first sealing piece and the second sealing piece are clamped between the connecting plates through the fasteners, so that the sealing effect can be achieved.

The utility model relates to the field of cutting of high-hardness and brittle materials, in particular to a fret saw and a slicing machine, and aims to further solve the problem that dust easily leaks from a cutting chamber from a movable third main roller in the scheme provided by the utility model. Therefore, the fret saw comprises a cutting component, the cutting component at least comprises a first main roller, a second main roller and a third main roller, a polygon is defined by rotating shafts of all the main rollers, and the third main roller is arranged to enable the perimeter of the polygon to be changed in the process that the cutting wire net cuts an object; the cutting component further comprises an adjusting sleeve and a transmission mechanism, the third main roller is arranged in the adjusting sleeve, and the transmission mechanism is arranged to be capable of driving the adjusting sleeve to move so as to drive the third main roller to move. The fretsaw further comprises a cutting frame, and a sealing piece is further arranged between the adjusting sleeve and the cutting frame. And the sealing piece is arranged between the adjusting sleeve and the cutting frame, so that the problem of dust leakage after the third main roller becomes movable is solved.

The invention relates to the technical field of irradiation sterilization, in particular to a safety monitoring method based on irradiation sterilization, which comprises the following steps: closing a box door; detecting the actual leakproofness between the box door and the box body, judging whether the box door and the box body are closed or not, and determining to turn on the sterilizing lamp group or adjust the actual leakproofness between the box door and the box body according to a judgment result; based on a comparison result of the real-time working parameters and the preset working parameters of the sterilizing lamp group, judging a safety evaluation value of the lamp group; determining an environmental safety evaluation value based on the real-time environmental parameters and preset environmental parameters; adjusting the real-time working parameters of the sterilizing lamp group based on the lamp group safety evaluation value and the environment safety evaluation value; the to-be-sterilized sample is sterilized according to the adjusted sterilizing lamp set, the sterilizing effect of the sterilized to-be-verified sample is detected, and the preset working parameters are adjusted or sterilization is completed on the basis of comparison between the sterilizing effect and a preset effect. The safety of the sterilization environment in the sterilization process is improved.

The utility model relates to the technical field of sound box shells, in particular to a sound box shell structure with good tightness, which comprises a shell, a through hole is arranged at the bottom of the shell, and a sealing mechanism is arranged at the bottom of the shell; the sealing mechanism comprises a sealing block connected to the inner wall of the through hole in a clamped mode, the inner wall of the sealing block is rotationally connected with a movable disc, annularly-distributed movable holes are formed in the bottom end of the movable disc, and the inner walls of the movable holes are slidably connected with fixed blocks. The surface of the fixing block is slidably connected to the inner wall of the sealing block and clamped to the inner wall of the shell, and the inner wall of the sealing block is fixedly connected with an air cylinder. According to the device, the movable disc and the movable hole are utilized, so that the fixed block is clamped in the shell and compressed air in the air storage cylinder is conveyed into the sealed air bag, the sound box shell is quickly assembled and sealed, and the tight effect at the assembly joint of the sound box shell is guaranteed.

The utility model discloses a piston type step locking device, and particularly relates to the technical field of valves, the piston type step locking device comprises a valve body, an inlet pipe and a discharge pipe, one end of the valve body is connected with the inlet pipe, the bottom end of the valve body is provided with the discharge pipe, the valve body is connected with an opening and closing control assembly, the end portion of the valve body is provided with a sealing cover, and the top end of the valve body is provided with a fixing frame. A locking adjusting assembly is arranged on one side of the fixing frame, a locking assembly connected with the locking adjusting assembly in a sliding mode is installed on the fixing frame, a stepped through groove is formed in the valve body, and the caliber size of the inlet pipe is larger than the caliber size of the connecting position of the inlet pipe and the stepped through groove. Fluid efficiency is optimized through a step structure, double sealing is achieved in combination with an electromechanical locking mechanism, the control reliability and safety of the valve are remarkably improved, and the valve is suitable for fluid control scenes needing high sealing performance and impact resistance.

The utility model relates to a kind of pulverizing system with circulating purification including filter, vacuum device, operating position, first isolator, the pulverizing equipment of pulverizing material, the filter bag of filtering powder and the second isolator of intercommunication first isolator;Filter and vacuum device intercommunication second isolator;The outlet of pulverizing equipment intercommunication filter bag;Filter bag's air outlet is connected by filter;Operating position is respectively distributed on first isolator and second isolator.Solved the problem that the gas condition in isolator in prior art scheme is limited to the filtration of external gas.

The utility model discloses a gapless wafer type knife gate valve which comprises a top plate, a protective cover is fixedly connected to the lower end of the top plate, an air cylinder is arranged at the upper end of the top plate, the output end of the air cylinder penetrates through the top plate to be fixedly connected with a valve plate, the valve plate is movably connected to the inner side of the protective cover, and a connecting plate is fixedly connected to the lower end of the protective cover. A valve body is arranged at the lower end of the connecting plate, two sets of symmetrical rubber rings are arranged on the inner side of the valve body, wear-resisting rings are arranged on the opposite sides of the two sets of rubber rings and are made of silicon carbide or aluminum oxide ceramic materials, the valve plate is movably connected between the two sets of wear-resisting rings, flanges are arranged at the front end and the rear end of the valve body, and the valve plate is movably connected between the two sets of wear-resisting rings. And the lower end of the valve body is fixedly connected with a lower cover. Compared with a common knife gate valve, the gapless wafer type knife gate valve has the advantages of being more wear-resistant, free of being blocked by particulate matter and the like, and the service life is prolonged to a greater extent due to the fact that the wear-resistant rubber ring can be replaced independently.

The utility model relates to the technical field of bracket structures, in particular to an automobile pump body bracket structure which comprises a mounting bottom plate, mounting holes penetrating through the mounting bottom plate are symmetrically formed in the bottom end of the mounting bottom plate, a buffer device is arranged above the mounting bottom plate, and the buffer device comprises a hydraulic cylinder which is vertically arranged and fixedly connected to the top end of the mounting bottom plate. A piston is arranged on the inner side of the hydraulic cylinder, a vertically-arranged buffer rod is fixedly connected to the top end of the piston, a sealing ring is arranged on the outer side of the buffer rod, a first buffer ring fixedly connected to the top end of the hydraulic cylinder is arranged above the sealing ring, and a second buffer ring fixedly connected to the outer side of the buffer rod is arranged above the first buffer ring. According to the hydraulic pump, the buffer device, the hydraulic cylinder, the piston, the buffer rod, the sealing ring, the first buffer ring, the second buffer ring and the circular plate are arranged, so that the pump body can be buffered, damage to the pump body is reduced, and the service life of the pump body is prolonged.