38results about How to "Improve installation tightness" patented technology

The invention discloses an auxiliary device for secondary cable plugging. The auxiliary device comprises a panel, the panel is provided with one or more installation holes, the position of each installation hole is spirally coiled with a spiral coiling part, a secondary cable is coiled with the spiral coiling parts and coated with fireproofing mud, and the spiral coiling parts are wrapped by the fireproofing mud which is in sealing connection with the installation holes. By means of the auxiliary device for secondary cable plugging, the panel is installed at a plugging opening of a chassis panel, a cable in a chassis is firstly divided into a plurality of parts, then the multiple parts of the cable penetrate through the installation holes in the panel respectively, the positions of the installation holes outside the cable are spirally coiled with the spiral coiling parts, and the installation holes are sealed through the fireproofing mud. The spiral coiling parts spirally coiling the cable serve as supporting frameworks, in the process that the installation holes are coated with the fireproofing mud, the fireproofing mud is attached to the supporting frameworks, gaps between the cable and the installation holes can be filled with the supporting frameworks, fireproofing mud falling caused by the over-large gaps is avoided, the installation holes are easy to fill, efficiency is high, and quality is high.

The invention discloses a chassis for a window type air-conditioner, a window type air-conditioner and a window type air-conditioner assembly. The chassis comprises a bottom plate and two side plates.The two side plates are arranged on the two sides of the bottom plate correspondingly. An installing cavity is defined between the side plates and the bottom plate. The installing cavity comprises afirst sub-cavity, a second sub-cavity and a third sub-cavity which are sequentially arranged in the length direction of the side plates. The first sub-cavity is used for bearing an indoor unit of thewindow type air-conditioner. The third sub-cavity is used for bearing an outdoor unit used for bearing the window type air-conditioner. The second sub-cavity is used for bearing a partition assembly for partitioning the indoor unit and the outdoor unit. Each side plate is provided with a concave portion formed in the manner of being concave in the direction of the other side plate. The concave portions form the side walls of the second sub-cavity. According to the chassis, as the side plates comprise the concave portions, thus the structural strength of the side plates can be improved, and theassembling efficiency of the window type air-conditioner is improved. In addition, when the window type air-conditioner comprises a sealing assembly, by means of the concave portions, the installingairtightness of the window type air-conditioner can be improved.

An overall installing device for an extra-large shield launching hole door sealing steel ring comprises a slide rail which is installed on the ground outside an extra-large shield launching hole door, a frame is arranged on the slide rail, a sealing steel ring is vertically placed on the frame, the extra-large shield launching hole door is provided with a steering wheel, a first chain block and a second chain block, the ground where the slide rail is far away from the extra-large shield launching hole door is provided with a third chain block, a fourth chain block is installed on a counter-force frame of a shied tunneling machine, the first chain block, the second chain block, the third chain block and the fourth chain block are provided with a middle pulling thread, a lower pulling thread, an upper pulling thread and a stabilizing thread respectively, the middle pulling thread and the lower pulling thread are connected with the middle and the lower portion of the extra-large shield launching hole door sealing steel ring respectively, the upper pulling thread winds through the steering wheel and is connected to the upper portion of one face of the extra-large shield launching hole door sealing steel ring, and the stabilizing thread is connected to the upper portion of the other face of the extra-large shield launching hole door sealing steel ring.

The invention discloses an automatic positioning and clamping tool. The tool comprises a main plate, a workpiece positioning column, an adjusting mechanism and a clamping mechanism, wherein the adjusting mechanism comprises a push cylinder, an angular push cylinder rod, an angular positioning column and an angular positioning seat, the push cylinder and the angular positioning seat are arranged on the main plate, the angular positioning column is arranged on the angular push cylinder rod, the driving end of the push cylinder is connected with one end of the angular push cylinder rod, and the other end of the angular push cylinder rod and the workpiece positioning column are sleeved; and the clamping mechanism comprises at least one lever cylinder used for pressing positioned workpieces, and the lever cylinders are installed on the main plate. According to the automatic positioning and clamping tool, automatic positioning and clamping of the workpieces can be conducted, unmanned automatic machining of a vertical machining center can be achieved through the cooperation with a robot in the whole clamping process, positioning is accurate, clamping is reliable, machining is stable, the machining efficiency of the vertical machining center is improved, the labor cost can be greatly reduced, and good economic benefits are created for enterprises.

The invention discloses a refrigerator air way structure. A base refrigeration intake groove, a base refrigeration air return way, a base temperature change intake groove and a base temperature changeair return way are arranged on an air way base; the air way base is provided with an intake way upper cover and an intake way lower cover; the intake way upper cover is provided with an upper cover refrigeration intake groove and an upper cover temperature change intake groove; the intake way lower cover is provided with a lower cover refrigeration intake groove and a lower cover temperature change intake groove; an air door module is arranged between the intake way upper cover and the intake way lower cover; corresponding air doors of the air door module are used for controlling opening andclosing of the corresponding refrigeration intake ways and temperature change intake ways; and the intake way upper covers, the intake way lower covers and the air door module are arranged on the airway base to form an integral structure. Through cooperation between foamed foams and a refrigerator liner, the refrigerator air way structure has the characteristics of simple structure assembly, convenience to install, easy sealing and the like, solves the problems of difficult installation and difficult sealing in the prior art, and improves the air way installation efficiency and the sealing effect.

The present invention discloses a polycrystalline ingot casting furnace side portion thermal insulation apparatus, which comprises a thermal insulation cage steel frame and a plurality of side thermal insulation plate assemblies, wherein the side thermal insulation plate assembly comprises an inner side plate and an outer side plate, the inner side plate and the outer side plate are adhered, a corn thermal insulation plate for sealing is arranged between the adjacent side edges of the two adjacent side thermal insulation plate assemblies, the width of the adhering surface of the outer side plate is larger than the width of the adhering surface of the inner side plate, the adhering surface of the outer side plate and the side surface of the inner side plate form a sealing groove, the end portion of the corn thermal insulation plate and the shape of the sealing groove are matched, and the end portion of the corn thermal insulation plate tightly contacts the sealing groove. According to the present invention, the installation adhering tightness between the outer side plate and the corn thermal insulation plate and between the inner side plate and the corn thermal insulation plate is improved, the tortuosity of the hot gas flow flowing path is increased, and the power of the hot gas flowing toward the thermal field external is effectively reduced so as to substantially reduce the heat loss, improve the thermal insulation property of the polycrystalline ingot casting furnace side portion thermal insulation apparatus, and finally improve the quality and the stability of the polycrystalline ingot. The present invention further discloses a polycrystalline ingot casting furnace comprising the side portion thermal insulation apparatus.

The invention discloses a sealing splash-proof mechanism for chemical liquid material proportioning and mixing treatment equipment. The sealing splash-proof mechanism comprises an equipment tank body,a movable clamp, a baffle and a water wheel, a sealing cover is arranged at the upper end of the equipment tank body, a rack is arranged in the sealing cover, and the outer side of the sealing coveris in shaft connection with a linkage block; an elastic steel sheet is arranged on the outer side of the inner wall at the lower end of the sealing cover, a flow guide pipe is fixed to the lower end of a blanking hole through a bolt, a blanking bin is installed on the upper surface of the sealing cover through a bolt, a second torsion spring is connected between the baffle and the blanking bin, and a water wheel is connected to the middle of the inner side of the sealing cover through a bearing. The sealing splash-proof mechanism for the chemical liquid material proportioning and mixing treatment equipment can be quickly and stably mounted and dismounted without influencing the sealing performance, the subsequent maintenance of the mechanism is facilitated, and meanwhile, the potential energy of materials can be used for primarily mixing and filtering the materials.

The invention discloses an assembly type plate-shaped wall surface mounting structure with a sound insulation material, and belongs to the technical field of building engineering. The assembly type plate-shaped wall surface mounting structure comprises two supporting plates, wherein assembly wall plates are arranged on the left sides and the right sides of the opposite faces of the two supportingplates, and the right side faces of the assembly wall plates are fixedly connected with the left side faces of limiting assemblies. According to the assembly type plate-shaped wall surface mounting structure with the sound insulation material, the supporting plates, the assembly wall plates, threaded cylinders, threaded rods, movable connecting rods, clamping grooves, sliding plates, limiting blocks and limiting grooves are arranged, a plurality of clamping blocks arranged on the supporting plates can be effectively clamped into the clamping grooves, so that the sliding plates are effectivelylimited, the assembly wall plates can be mounted after a door cover is closed, and a plurality of assembly wall plates do not need to be mounted and fixed through a plurality of fasteners; and the twoassembly wall plates are mounted through the supporting plates, so that the mounting stability of the assembly wall plates is effectively improved, the assembly wall plates are not prone to loosening, and normal operation of workers is facilitated.

The invention discloses a lower shell and a battery shell. In the process of fixedly mounting a battery module, a fixing sleeve is inserted into a first mounting hole, and the fixing sleeve is fixed on a bottom plate through a first thread and a second thread; and then a second fixing part on the battery module is inserted into the fixing sleeve and is fixedly matched with the first fixing part, so that the battery module is stably fixed on the bottom plate. According to the scheme, the battery module fastening points are meshed with one another through the threads, the traditional rivet nut connection is replaced, and the fixing sleeve is arranged on the bottom plate, so the fixing sleeve is more stably fixed on the bottom plate, the rotation failure of the fixing sleeve in the fixing process of the battery module is effectively avoided, a certain risk exists in single-layer sealing of the rivet pulling nut, the battery module can be stably fixed by adopting the fixing sleeve, and themounting stability and the sealing performance of the battery module are improved. Meanwhile, the fixing sleeve is adopted for fixing, so that the rework rate of the lower shell is reduced, the rework amount of the battery shell is reduced, and the manufacturing cost of the battery shell is reduced.

The present invention discloses a blow-down valve. The blow-down valve comprises a valve seat, a pipe joint, a filter screen, crushing blades and a second air bag, a valve body is installed at the upper end of the valve seat, a connector is arranged on the outer side of the valve seat, the pipe joint is arranged on the outer side of the connector, a limiting column is arranged on the outer side ofthe right end of the pipe joint, and a connecting shaft is connected to a middle bearing of the filter screen; crushing blades and a micro impeller are fixed to the upper end and the lower end of theconnecting shaft through bolts correspondingly, a blow-off pipe is arranged on the outer side of the pipe connector, a limiting groove is formed in the surface of the connecting column, a movable ring is arranged on the outer side of the connector, a linkage block is arranged on the inner side of the connector, a containing groove is formed in the connector, and a containing groove is formed in the end face of the connector. The blow-down valve can be conveniently and stably installed, is convenient to disassemble and maintain in the later period, and can automatically cut and crush impurities in sewage to prevent the valve from being blocked.

The ball valve capable of improving the sealing performance comprises a valve body, the top of the valve body is fixedly connected with a valve cover, the top of the valve cover is rotationally connected with a hand wheel, the bottom of the hand wheel is provided with a valve rod used in cooperation with the valve cover, and the bottom of the valve rod is fixedly connected with a spherical valve element used in cooperation with the valve body. By arranging a sealing structure, through cooperation of an annular sealing groove, a main sealing ring and an auxiliary sealing ring, the sealing function of a secondary sealing piece can be achieved in the two sets of mounting flange plates, the compression resistance of the interiors of the two sets of mounting flange plates is improved, and then through cooperation of an elastic ball, an arc-shaped abutting-against base, an elastic cushion, a sliding base and a circular abutting-against head, the sealing effect is improved. The impact stress between the main sealing ring and the auxiliary sealing ring can be elastically counteracted, deformation damage caused by stress between the main sealing ring and the auxiliary sealing ring is avoided, the overall sealing effect in the two sets of installation flange plates is directly enhanced, and therefore the overall installation sealing performance between the two sets of installation flange plates and the water inlet pipe and the water outlet pipe is further improved.

The invention discloses a heat preservation structure assembly part of a heat supply pipeline, and belongs to the field of heat preservation of the heat supply pipeline. According to the scheme, a mounting seat fixedly connected with one end of a flexible heat preservation layer is additionally arranged on the flexible heat preservation layer, a winding part is further mounted on the mounting seat, and when heat preservation mounting is conducted on the outer wall of the pipeline, the flexible heat preservation layer is arranged on the outer wall of the pipeline in a sleeving mode; the free end of the flexible heat preservation layer bypasses the pipeline, is guided into the inner side of the mounting base through the lower penetrating cavity, is guided out of the lower penetrating cavity and is slowly pulled to be tightened, then the free end of the flexible heat preservation layer is wound and fixed through a winding piece, and finally the mounting base is sleeved with an upper sealing cover which is embedded into the mounting base in a magnetic attraction mode. Compared with the prior art, the thermal insulation material does not need to be cut according to pipelines with different thicknesses and sizes, external tools do not need to be used for bundling, the application range is expanded, the thermal insulation sealing performance is improved, operation is simplified, and resource waste caused by cutting is avoided.

The invention discloses connecting equipment for direct sliding-in type fastening and connecting pipe fittings, and relates to the technical field of connecting pipe fittings. The connecting equipment comprises a bottom plate, a fastening assembly and a sliding assembly; and the fastening assembly is fixedly installed in the middle of the upper surface of the bottom plate, a pipeline connecting piece is installed in the fastening assembly, sliding assemblies are arranged on the two sides of the fastening assembly correspondingly, and pipe fittings are installed in the sliding assemblies. The connecting equipment is scientific and reasonable, and safe and convenient to use, the fastening assembly and the pipeline connecting piece is arranged, a fastening groove is formed in the pipeline connecting piece, the fastening groove is inclined, gas is introduced into a pneumatic groove through a gas conveying pipe, so that a pneumatic piston slides towards the two sides in the pneumatic groove, the pneumatic piston with magnetism drives a fastening magnetic block to slide towards the two ends, the inner wall of the pipeline connecting piece deforms, the pipeline connecting piece is fixedly connected with a pipeline, and convenience and rapidness are achieved.

The invention relates to the technical field of a turbocharged engine, and discloses an oil return pipe joint and an installation tool thereof. The oil return pipe joint comprises: a first pipe body (1), wherein a first end of the first pipe body is connected to an oil return hole of an engine cylinder, an end surface of a second end of the first pipe body includes a first plane (11) and a secondplane (12) for receiving the assembly force, the first plane is perpendicular to a central line of the first pipe body, and the second plane and the central line of the first pipe body form an obtuseangle from the second end to the first end; and a second pipe body (2), wherein the second pipe body is connected to an oil return pipe of a supercharger, and the second tube body and the first tube body are connected in the second plane. According to the oil return pipe joint of the present invention, the first pipe body has the first plane and the second plane, the first plane and the second plane can simultaneously bear the thrust of the installation tool of the present invention, and the force is uniform. The installation reliability and sealing performance of the oil return pipe joint isimproved, and the installation speed is accelerated.

The invention provides a truck wheel with reinforcing ribs on a mounting face and relates to the technical field of truck wheel manufacturing. The truck wheel comprises a wheel rim (1) and a wheel spoke (2), and the inner side of the wheel rim (1) is connected to the outer side of the wheel spoke (2) by welding; the wheel spoke (2) is a spoke-platy wheel spoke and is provided with a central hole (201), bolt positioning holes (202), the reinforcing ribs (203) and venting holes (204). Compared with the prior art, the truck wheel has the advantages that the reinforcing ribs are manufactured on the mounting faces of the wheel spoke and axle, the mounting fastening degree between the wheel spoke and the axle is increased, and the stability and safety of a truck during running are improved. Whenthe truck constantly runs for a long time, and the bolt positioning holes are cracked, the reinforcing ribs can effectively prevent cracks of the bolt positioning holes from further getting larger, and the service life of the wheel spoke is prolonged.

The linkage air exhausting and supplying device comprises a shell, a mounting plate is integrally arranged on the bottom end face of the shell, an upper air inlet and outlet frame is integrally arranged on the end face of one side of the shell, an annular screen frame is mounted in the upper air inlet and outlet frame, and a control circuit board is mounted on the inner side wall of the shell; an arc-shaped baffle is arranged on one side of the control circuit board, the arc-shaped baffle is fixedly connected with the side wall of the top in the shell, an annular frame is integrally arranged on the side wall of the bottom of the shell, and a lifting air inlet and outlet assembly is installed in the annular frame. The air supply and inlet device is provided for an existing range hood, fresh air is provided for cooking fume exhaust of a kitchen, cooking fume exhaust of the kitchen with large cooking fume and small space can be effectively achieved, it is guaranteed that air flow in the kitchen supplies micro-positive pressure, the fume exhaust effect is guaranteed, the internal protection and sealing effect is good, kitchen air and kitchen ware can be disinfected through the ultraviolet disinfection lamp, and the environment is protected. The practicability is high.

The invention discloses an aluminum alloy door and window frame and wall body connecting technology. The aluminum alloy door and window frame and wall body connecting technology comprises the following steps that a datum line of an aluminum alloy door and window frame mounting hole reserved in a wall body is measured, inlet and outlet perpendicular lines of aluminum alloy door and window frames onthe two sides of the aluminum alloy door and window frame mounting hole are measured, the two ends of a connecting piece are connected with the wall body through expansion bolts, a sound insulation plate and a heat preservation plate are mounted between the connecting piece and the wall body, the aluminum alloy door and window frames and the connecting piece fixed to the wall body are connected and fixed through connecting bolts, datum errors exceeding the design requirement regulation are corrected, and a foaming agent is filled. According to the aluminum alloy door and window frame and wallbody connecting technology, the special connecting piece in an isosceles trapezoid shape is designed, the connecting stability between the aluminum alloy door and window frames and the wall body canbe improved, datum line measuring is conducted through the aluminum alloy door and window frame mounting hole, the mounting tightness between the aluminum alloy door and window frames and the wall body can be improved, the one-time mounting success rate is high, and the sealing performance between the mounted aluminum alloy door and window frames and the wall body is good.

The invention discloses a built-in magnetic buckle type building curtain wall, and belongs to the technical field of building curtain walls. Buckling cavities are formed in the upper ends and the lower ends of a pair of built-in connecting columns, magnetic attraction strips are embedded in the inner ends of the buckling cavities, and by means of the magnetic attraction relation generated by the magnetic attraction strips to L-shaped magnetic attraction buckling plates, the L-shaped magnetic attraction buckling plates are movably and magnetically attracted into the buckling cavities. The magnetic snap connection between the glass surface layer and the suspension framework is achieved, installation is easy, convenient and stable, when disassembly is needed, only the air pipe needs to be connected with external air supply equipment, air is supplied to the interior of the hollow cavity, the gradually-increased air pressure pushes the pair of magnetic insulation air pushing mechanisms in the hollow cavity to move towards the upper side and the lower side, and then the glass surface layer and the suspension framework can be disassembled. Under the action of continuous gas supply, the L-shaped magnetic attraction buckling plate is pushed outwards by utilizing gas, so that the L-shaped magnetic attraction buckling plate is separated from the buckling cavity, and an operator buckles the elastic exterior trim bag with a hand, so that the glass surface layer can be simply and conveniently disassembled.

The invention relates to the field of plate heat exchangers, and particularly discloses a plate heat exchanger which comprises a fixed clamping plate, a movable clamping plate and a screw rod, wherein an upper guide rail is arranged on the side of the fixed clamping plate, a heat exchange plate is arranged on the outer side of the upper guide rail, a conduction piece is arranged on the side of the heat exchange plate, and a groove is formed in the other side of the heat exchange plate; and the movable clamping plate is installed on the outer side of the upper guide rail, a guide wheel is arranged on the top of the movable clamping plate, an installation frame is arranged on the inner side of the fixed clamping plate, a protection plate is arranged on the side of the installation frame, a telescopic chain is arranged on the side of the protection plate, a buckle is arranged on the top of the protection plate, a supporting column is arranged at the end of the upper guide rail, a connecting piece is arranged on the side of the supporting column, and a nut is arranged at the end of the connecting piece. The plate heat exchanger is provided with a plurality of installing and pressing structures, so that equipment can be stably installed to the maximum extent, the stability during use is ensured, and the leakage condition of the equipment is avoided.

The invention relates to the technical field of track buffer vibration isolators, and discloses a rubber vibration isolator structure applied to railway tracks to buffer train vibration, comprising a track, a pad block is arranged at the bottom end of the track, and two sides of the track are provided with a spacer block. Each is provided with a splint, the interior of the splint is provided with a rubber shell, the inside of the rubber shell is fixedly installed with a metal cover, the inside of the metal cover is fixed with rubber particles, and the inside of the rubber particles is fixedly connected with damping. The rubber vibration isolator structure applied to the railway track to buffer train vibration is provided with rubber shells on both sides of the track, the inside of the rubber shell is provided with a metal cover, the inside of the metal cover is provided with rubber granules, and the rubber granules are provided with pressure plates and the second spring, which is convenient for shock absorption and buffering through the rubber shell, metal cover and rubber particles, and the rubber shell, metal cover and rubber particles are all independent units, which is convenient for independent replacement and avoids the phenomenon of high maintenance cost and difficult maintenance. appearance.

The invention relates to the technical field of 3D printing, and discloses a 3D printing high-performance ceramic material extrusion device which comprises a shell, a mounting plate and a feeding pipe, an extrusion mechanism is arranged in the shell, and a connection sealing mechanism is arranged at the bottom end of the mounting plate; the extrusion mechanism comprises a small motor, a partition box, a double-concave rotating shaft, a connecting rod, a fixing block, a first ejector rod, a piston pipe, a piston pressing pad, a first through pipe, a first one-way valve, a second through pipe, a second one-way valve, an extrusion needle tube and a working chamber, one end of the double-concave rotating shaft is fixedly installed at the output end of the small motor, and the double-concave rotating shaft penetrates through one side of the working chamber; through the combined action of all the mechanisms, the extrusion time can be staggered, continuous and continuous discharging is achieved, discharging is stable, the discharging amount is controllable, stopping is achieved at any time, the mechanism is simple in structure, driving is achieved only through one driving motor, the manufacturing cost is effectively reduced, and the use purpose is achieved to the maximum extent.

The invention discloses a toner bin connecting structure of a split type toner cartridge. The toner bin connecting structure comprises a waste toner bin assembly, a toner bin assembly is fixedly mounted on one side of the waste toner bin assembly, a toner discharging knife is fixedly mounted on one side of the toner bin assembly, a magnetic roller is arranged at the bottom end of the toner discharging knife, a stirrer is rotatably mounted in the toner bin assembly, a waste toner scraping piece is fixedly installed on one side of the waste toner bin assembly, a photosensitive drum is arranged on one side of the waste toner scraping piece, a charging roller is arranged at the top end of the photosensitive drum, and an installation cover plate is fixedly installed on the front face of the waste toner bin assembly; and the waste toner bin assembly comprises a waste toner bin box, and an elastic limiting plate is integrally formed on one side of the side face of the waste toner bin box. According to the toner bin connecting structure of the split type toner cartridge, a transmission positioning body is designed, traditional complex installation steps are changed, the installation difficulty of the toner cartridge and the toner bin assembly is reduced, the toner bin assembly is convenient to overhaul and clean, and the maintenance speed of the toner cartridge is increased.

The municipal flood pressure relief blow-down valve comprises a valve body inner cavity, the middle of the top of the valve body inner cavity is provided with a liquid inlet in a penetrating mode, the bottoms of the left side wall and the right side wall of the valve body inner cavity are each provided with a main liquid outlet, and the main liquid outlets are connected with a municipal drainage channel; the movable cavities are fixed to the left side and the right side of the top of an inner cavity of the valve body, lifting rods are movably installed in the movable cavities, elastic pieces are fixed between the tops of the lifting rods and the tops of the movable cavities, and floating plates are fixed to the lower ends of the lifting rods; the partition plate is located in the middle in the inner cavity of the valve body, and a connecting ring is fixed to the edge of the bottom of the partition plate; the middle net barrel and the flood discharge opening are both fixed to the center of the bottom of the inner cavity of the valve body. According to the municipal flood pressure relief blow-down valve, the valve can be started to be communicated with an emergency flood discharge pipeline through the buoyancy effect of water when accumulated water is fully filled in the valve body by utilizing the backward flowing and overflow phenomena during flood disasters, and water is rapidly drained to relieve pressure.

The invention discloses a storage battery safety valve with high sealing performance. The storage battery safety valve comprises a valve body, wherein a pressing plate is fixedly welded on the outer wall of the bottom of the valve body; a sealing rubber ring is arranged above the pressing plate; the sealing rubber ring sleeves the outer wall of the valve body; a locking screw sleeve sleeves the upper part of the valve body; a storage battery upper housing plate is clamped between the sealing rubber ring and the locking screw sleeve; a limiting ring sleeves the outer wall of the upper part of the valve body; a bearing block is fixedly welded on the inner wall of the bottom of the valve body; a pressure relief through hole is formed in the middle of the bearing block; and a ball is embeddedabove the bearing block. According to the storage battery safety valve, a mushroom-shaped nut is arranged and can move up and down in the middle of a neutralization bin under the meshing action of threads, and the extrusion effect of the mushroom-shaped nut on a spring is adjusted by rotating the mushroom-shaped nut, so that the force required for jacking the ball upwards can be adjusted, the acidgas supporting force required for jacking the ball is flexibly adjusted according to the actual use condition, and the storage battery safety valve is flexible and convenient.