44results about How to "Does not affect sealing" patented technology

The invention discloses a Rockwell sealing ring comprising a main sealing ring and a secondary sealing ring which are parallel to each other, wherein the main sealing ring is connected with the secondary sealing ring in an embedding mode. A groove is disposed at the outer peripheral surface of the main sealing ring, and an elastic ring is embedded in the groove. A sealing main lip is arranged on the inner peripheral surface of the main sealing ring. The invention also discloses a production method of the Rockwell sealing ring. With the advantages of simple structure and convenient processing, the Rockwell sealing ring can enhance processing efficiency and reduce processing cost.

The invention relates to power batteries, and discloses a power battery cover plate, which includes a base plate, an anode pole and a cathode pole, wherein two pole holes used for penetrating through the anode pole and the cathode pole respectively are formed in the base plate; the anode pole or the cathode pole penetrates through the end part of the base plate and is respectively riveted to one end of an anode riveting pressing block or one end of a cathode riveting pressing block; an anode connecting bolt is arranged at the other end of the anode riveting pressing block; a cathode connecting blot is arranged at the other end of the cathode riveting pressing block. The invention has the advantages that the power battery cover plate facilitates battery connection and improves safety of batteries.

The invention is about the amelioration to the wearing and corrosion resistant butterfly valve, the character is that at least the valve plate surface coat is a elastic mass which is a resistance to acid, alkali-proof and pouring polyurethane. At least the valve plate which is the easiest to be abraded is coated by the polyurethane, it can greatly improve wearing and resistant ability of the valve plate, also can greatly improve the acid- resisting, alkali-proof and chloride ion-resisting ability, so it can prolong the operating life of the butterfly valve. There are warp lining betweens the lining in overflowing part of the valve body and the body of valve for anchoring, it can greatly enhance the firm ability of the lining and the valve body, and will not make the lining slough, it is especially the same with the heavy caliber such as the 500-1000mm latus rectum butterfly valve.

A dual mechanical seal floor drain core is composed of an upper floor drain core body, a floater, a lower floor drain core body and a valve. The floater is mounted in the upper floor drain core body, the lower end of the floater is matched with the water outlet of the upper floor drain core body, and the lower end of the floater seals the water outlet of the upper floor drain core body through gravity or magnetic force; the lower floor drain core body is connected with the lower end of the upper floor drain core body, the valve is mounted on the water outlet of the lower floor drain core body to seal the water outlet of the lower floor drain core body through gravity or magnetic force. The open-close of the dual mechanical seal floor drain core is realized through the changes of water flow entering the floor drain core. The dual mechanical seal floor drain core has the advantages of rapid opening and closing, small passing resistance of water flow, good sealing effect and uneasy blockage, also can prevent the positive and negative pressure in the sewer from damaging the sealing performance of the floor drain core and has good anti-overflow performance.

The invention discloses emulsifying equipment for cosmetic production, which structurally comprises a collecting box, a quick stirring and emulsifying mechanism, a stirring rod, a hydraulic cylinder,a control panel, power devices and a rack workbench. In order to improve the working efficiency of the device, a spiral stirring rod and a stirring knife blade are matched to stir cosmetic raw materials, so that the cosmetic raw materials are enabled to continuously circle up and down, the exchange and mixing of the cosmetic raw materials in a mixing kettle is facilitated, and the quick and uniform stirring is ensured; a piston is used for pushing in auxiliary materials, and the condition that the auxiliary materials are added in a mixing reaction process is ensured without influencing the airtightness of the operation; the cosmetic raw materials are added into the mixing kettle, and after the addition is finished, a lifting motor is started, the lifting motor drives a driving wheel to rotate through a transmission rotating shaft, the driving wheel drives a driven wheel to rotate through a belt, and the driven wheel drives a threaded rod to rotate, so that a sliding block is enabled tomove downward, and a top cover is driven by a fixed rod to move downward, so as to enable the upper wall of the mixing kettle to be embedded in the top cover and in a sealing state.

The invention relates to a silica film all-in-one keyboard which comprises a face plate layer, a lower substrate layer with a film circuit, an upper substrate layer with electric conduction wafers and an insulation interlayer. The face plate layer comprises a polyester film layer and a silica gel layer below the polyester film layer, the polyester film layer is connected with the silica gel layer in a hot-press mode, a plurality of upwards-plump keys on the polyester film layer are connected with corresponding upwards-plump keys on the silica gel layer, the plump heights H of the keys on the polyester film layer are 0.5-1.0mm, the lower portion of the silica gel layer is connected with a sealing gasket layer through a peelable glue layer, the sealing gasket layer is fixedly connected with the upper substrate layer, the upper substrate layer is fixedly connected with the lower substrate layer through the insulation interlayer, protrusions corresponding to the keys on the polyester film layer are arranged on the upper substrate layer, and the electric conduction wafers at the bottoms of the protrusions correspond to electric conduction strips on the film circuit. The silica film all-in-one keyboard is simple and reasonable in structure, capable of improving the hand feeling of the keyboard and small in pressing force, reduces labor intensity, brings convenience to replacement of the face plate layer, and reduces use cost of the keyboard.

The invention discloses an installing structure for a vacuum switch tube. The installing structure comprises an insulating cylinder, the vacuum switch tube, a circular plate and a special sleeve. A conductor insert is arranged at the bottom of the insulating cylinder, a clamping hole matched with a static contact of the vacuum switch tube is formed in the center of the circular plate, bayonets evenly distributed are formed in the circumference of the circular plate, through holes are formed between the bayonets and the clamping hole, the circular plate is clamped on the static contact of the vacuum switch tube through the clamping hole, and the static contact of the vacuum switch tube is in threaded connection with the conductor insert. Clamping jaws matched with the bayonets of the circular plate are arranged at the bottom of the special sleeve, and a nut is welded to the top of the special sleeve. An installing process for the vacuum switch tube sequentially includes the steps of cleaning tools, installing and preliminarily fastening the circular plate, conducting fastening through the special sleeve and conducting glue filling. Compared with the prior art, the installing structure and the installing process have the advantages that the installing structure is simple and ingenious in design; by the adoption of the process, the sealing performance and glue filling of elements inside the insulating cylinder cannot be affected, and it can be guaranteed that the vacuum switch tube is not damaged.

The invention provides a connection structure of a vacuum pipeline. The vacuum pipeline is formed through connection of a plurality of single-sectional pipeline bodies, and swelling joints are arranged on the single-sectional pipeline bodies; and every two adjacent single-sectional pipeline bodies are connected through the swelling joints. The swelling joints can adapt to the volumetric change ofthermal expansion and cold contraction of the single-sectional pipeline bodies, and the sealing performance and the stability of connection among the pipeline bodies are ensured.

The invention discloses a machining method of a three-layer clad steel plate. The machining method comprises the following steps: (1) surface treatment; (2) assembling; (3) groove machining; (4) segmental pressure application, groove welding and complete welding and sealing; (5) primary vacuumizing treatment; (6) secondary vacuumizing treatment and heating; (7) hot rolling; (8) cold rolling; (9) post-treatment to obtain a composite sheet. According to the machining method, an adhesive is adopted for bonding in the assembling process, so that primary connection is achieved; the grooves are machined in the welding process, pressure is applied in a segmented mode, and welding and secondary welding are conducted on the grooves, so that a combined blank plate is prevented from locally protruding or tilting; a two-time vacuumizing treatment mode and a heating mode are adopted during vacuumizing, so that firm metallurgical bonding can be formed between a base plate and a covering plate; and the carbon steel and stainless steel double-sided composite sheet machined by the machining steps has corrosion resistance, high mechanical strength and machinability.

The invention discloses a hinge with an adjusting and locking device, which comprises an upper hinge structure and a lower hinge structure, wherein each hinge structure comprises a fastening part and a hinge joint part that are integrally formed; the two hinge joint parts are hinged and matched through a hinge shaft; further, the hinge shaft is sleeved with an eccentric shaft sleeve inside a shaft hole of the hinge joint part of the lower hinge structure; a plurality of first arc-shaped grooves which are arranged in the axial direction are formed in the outer wall of the eccentric shaft sleeve; a second arc-shaped groove which is axially arranged is formed in the inner wall of the shaft hole of the hinge joint part of the lower hinge structure; a movable type strip-shaped pin column fitted with one of the first arc-shaped grooves in shape is mounted in the second arc-shaped groove; an eccentric shaft sleeve locking screw, which penetrates to the second arc-shaped groove and is in separation and reunion fit with the strip-shaped pin column, is arranged at the connection part of the hinge joint part and the fastening part of the lower hinge structure. The adjusting and locking device of the hinge is simple and compact in structure, convenient and easy to operate, practical, firm and reliable.

The invention discloses a dynamic and static ring structure of a molded pulp rotating hub machine. The dynamic and static ring structure comprises a dynamic ring and a static ring, the static ring is columnar, a pulp suction air chamber, a dehydration air chamber and a blowing air chamber are communicated with the outer side end face and peripheral side of the static ring, the dynamic ring is columnar, and is provided with a static ring containing cavity with an opening in the outer side end face, and the inner end of an airflow channel of the dynamic ring is communicated with the peripheral side of the static ring containing cavity. The outer side end face of the static ring is arranged in the static ring containing cavity outwards, the axial position of the airflow channel on the end opening of the static ring containing cavity corresponds to the axial position of an inlet of the pulp suction air chamber, the axial position of an inlet of the dehydration air chamber and the axial position of an outlet of the blowing air chamber, and a sealing structure is arranged between the peripheral side of the static ring and the peripheral side of the static ring containing cavity. Compared with the prior art, the dynamic ring and the static ring are of a columnar structure, sprig pressure sealing is replaced with the sealing structure between the peripheral side of the static ring and the peripheral side of the static ring containing cavity, the defects caused by a spring structure adopted in the prior art are avoided, and good sealing is achieved.

The invention discloses a composite filter core assembly, which comprises a shell, a first filter group and a second filter group, wherein the interior of the shell is divided into a first containingcavity and a second containing cavity in the length direction, the two containing cavities are separated through a transition plate, a transition opening is formed in the transition plate, the water pressure in the second containing cavity is larger than the water pressure in the first containing cavity, a water stop structure is arranged at least one inlet and outlet in the shell, the first filter group is arranged in the first containing cavity, the second filter group is arranged in the second containing cavity, the water stop structure comprises a water stop concave table, a water stop core and a water stop spring, the water stop concave table is connected to the shell, the water stop core can move between a cut-off position and a conduction position, the water stop structure blocks the inlet and outlet when the water stop core is in the cut-off position, the inlet and outlet communicates with the interior of the shell when the water stop core is in the conduction position, and thewater stop spring is connected between the water stop concave table and the water stop core, and normally drives the water stop core to move towards the cut-off position. The composite filter core assembly disclosed by the embodiment of the invention is high in integration level and convenient to use.

The invention discloses an adjustable range hood and an adjusting method thereof, and belongs to the technical field of range hoods. The range hood comprises a shell, an air draft box arranged insidethe shell, an exhaust fume collecting hood obliquely installed on the front lower part of the shell, a fume exhaust pipe installed on the upper part of the shell and communicating with the air draft box, and a moving mechanism fixed to a wall, wherein the moving mechanism is in transmission connection with the top of the shell and used for controlling the distance between the shell and a user. According to the adjustable range hood and the adjusting method thereof, a mechanism capable of adjusting the distance between the side suction type range hood and the user is installed at the top of theside suction type range hood, so that the range hood is conveniently adjusted to a proper position for cleaning during cleaning, the sealing performance of the fume exhaust pipe is not influenced inan adjusting process, and residual oil inside the range hood can be conveniently treated.

The invention discloses full-automatic cleaning and detecting equipment for a five-station backlight plate. The equipment comprises a supporting table and a feeding assembly line installed on one sidein front of the supporting table. A turntable mechanism is mounted in the center of the top of the supporting table; a material taking robot is mounted at the top, close to the feeding assembly line,of the supporting table; the material taking robot comprises a supporting column; a rotating plate is mounted at the top of the supporting column; a connecting body is mounted at the top, away from the supporting column, of the rotating plate; a connecting rod is installed at the end, away from the rotating plate, of the connecting body; a suction plate is installed at the bottom of the connecting rod; suction cups are installed at the four corners of the bottom of the suction plate; the supporting table is close to the feeding assembly line and provided with a sliding hole close to the top of the rotating disc mechanism, and first springs are symmetrically arranged at the top of the sliding hole and fixedly arranged on the supporting table. The equipment can prevent dirt from being accumulated on the suction cups, the suction effect of the suction cups is prevented from becoming poor, and the workload of the backlight cleaning mechanism is increased.

The invention relates to a battery structure for injecting liquid from the end part of an electrode column. The battery surface comprises a battery shell, the surface of the battery shell is only provided with a hole position for assembling the electrode column at the central position of the upper surface; the battery structure comprises the electrode column, a liquid injection hole penetrating through the upper surface and the lower surface of the electrode column is reserved in the electrode column, the upper end of the liquid injection hole is provided with a conical port, and electrolyte is injected into an inner cavity of the battery shell from top to bottom through the liquid injection hole, so that the electrolyte is directly dispersed and guided to each region on the surface of the battery cell through the middle space region of the battery cell from the liquid injection hole; and the battery structure further comprises a conical sealing assembly, which is arranged at the conical port and seals the liquid injection hole. According to the battery structure, only the electrode column is used for configuring the liquid injection hole for liquid injection, and the space at the central position of the internal battery cell is used for improving the fluency of the liquid injection operation of the battery and ensuring the sufficient infiltration of the battery cell, and the stability and the sealing property of the structure of the battery are not influenced.

A mechanical seal and water seal combined floor drain consists of a floor drain cover, a main floor drain body, a float and a hose type magnetic seal valve. The float is arranged inside the main floor drain body, the lower end of the float is matched with a water outlet of the main floor drain body, the water outlet of the main floor drain body is sealed with the lower end of the float by gravity or magnetic force; and the hose type magnetic seal valve is arranged at the water outlet of the main floor drain body, and the water outlet is sealed by the magnetic force. Opening and closing of the mechanical seal and water seal combined floor drain are realized by the change of water flow entering the floor drain. The mechanical seal and water seal combined floor drain has the advantages of quick opening and closing, small resistance when water passes through, good sealing effect, uneasy blockage and the like, can prevent positive and negative pressure in a sewer from damaging the sealing performance of the floor drain, and also has good overflow resistance performance.

The present invention relates to a watertight zipper. It is mainly used for opening and closing full-closed or semi-closed inlet and outlet of flexible container for fluid transportation, protective clothing, diving suit, heat-insulating life-saving garment, underwater sealed container and others. It includes a zipper tape, and is characterized by that the described zipper tape is formed from upper and lower two pairs of teeth and intermediate a pair of zipper tapes, the described zipper tape has upper and lower two layers, between said upper and lower two layers of zipper tape a layer of sealing tape is included.

The invention discloses a protective mask, and relates to the field of masks. The protective mask comprises: a mask surface layer, wherein the mask surface layer is rectangular as a whole, and the edges of the mask surface layer are sealed; and ear loops fixed on the two sides of the mask surface layer, wherein each ear loop is rectangular as a whole, and the length of the long sides of the ear loops is larger than the width of the mask surface layer; the short edges of the ear loops are welded at four corners of the mask surface layer and are parallel to the long edges of the mask surface layer; and the ear loops are formed by cutting an elastic nonwoven fabric. The problems that in case of sudden epidemic situations, the price rises and the supply is short and the output of the mask is influenced are solved; and the problems that the sections of ear loops of a traditional mask are cylindrical, the elasticity is poor, and ear pain and the like occur after the mask is worn for a long time are solved.

The invention provides a steamer cage and a steamer, which solve the technical problems that the existing steamer is inconvenient to take and put and is easy to burn hands. The steamer cage comprisesa steamer disc provided with a front side supporting an object to be steamed and a reverse side opposite to the front side; a sealing block connected to the edge of the steam tray, and adapted to sealthe object to be steamed on the front side of the steam tray; at least one set of handle part arranged on that seal and along the circumferential direction of the seal, wherein the handle parts are telescopically arranged along the height direction of the seal, and when the handle part is in an extended state, the portable part of the handle part is higher than the top of the steam appliance mainbody in which the steamer cage is located. When the handle part is pressed down by the steam appliance cover, the portable part is retracted into the steam appliance main body. A folding handle partis arranged on the sealing block of the steamer cage, so that the space of the steamer cage handle holding part is changeable, and the handle state changes in the process of opening and closing the lid of the steamer cage, so as to meet the requirements of different users on the handle, and improve the user experience.

The invention discloses a sealing wooden door which comprises a wooden door and a door frame.The wooden door is connected with the door frame through a hinge, and a gear is arranged in an internal interlayer of the wooden door.The upper part, the lower part, the left part and the right part of the gear are meshed with ends of four racks respectively, the other ends of the four racks extend towards the edges of the four sides of the wooden door respectively, the four racks are perpendicular to the four sides of the wooden door respectively, and the rack ends close to the edge of the wooden door are provided with sealing strips.Gaps are formed at the positions of the sealing strips corresponding to the hinge, the door frame is provided with sealing grooves corresponding to the sealing strips, a gear shaking rod is clamped in the middle of the gear and extends outside the door leaf surface of the wooden door, the gear rotates through the gear shaking rod, and the gear drives the racks to perform liner motion, so that the sealing strips arranged at the rack ends enter or quit from the sealing grooves.The sealing wooden door performs manual sealing after the door is closed, and the sealing effect is good.No matter whether the wooden door expands and deforms, the sealing operation and the sealing effect after the closing of the wooden door are not affected.

A double-layer sealed floor drain device is composed of a top cover plate, an upper part of a main body, a float, a lower part of the main body and an adjustable door. The float is installed in the upper part of the main part, and the lower end of the float is matched with the water outlet of the upper part of the main part, and the lower end of the float is sealed to the water outlet of the upper part of the main part by gravity or magnetic force; the lower part of the main part is connected to the lower end of the upper part of the main part, The adjustable door is installed at the water outlet at the lower part of the main body, and the water outlet at the lower part of the main body is sealed by gravity or magnetic force. Through the change of the water flow entering the floor drain, the opening and closing of the double mechanical seal floor drain is realized. The double mechanical seal floor drain has the advantages of fast switching, small resistance when water flows through, good sealing effect, and is not easy to be blocked, and can prevent the positive and negative pressure in the sewer from damaging the sealing performance of the floor drain, and has good anti-backflow performance.

The invention relates to an anti-scouring high-pressure adjusting valve capable of achieving sealing and adjusting staggering. The anti-scouring high-pressure adjusting valve comprises a valve body and a staggered opening and closing structure; the staggered opening and closing structure comprises a valve cover and a valve rod which are arranged in the valve body, a valve cage is provided with a plurality of throttling windows, and a valve clack ascends and descends along with the valve rod to enable the lower side end of an upper adjusting pair to be matched with the throttling windows so as to adjust the flow of a medium in a flow channel; and the outer wall of the lower end of a lower sealing pair of the valve clack is provided with a sealing face A matched with the valve seat in a sealing manner, the inner wall of the upper end of the valve seat is provided with a sealing face B matched with the sealing face A, and the outer wall of the upper adjusting pair is provided with a plurality of flow balance holes. The anti-scouring high-pressure adjusting valve has the following advantages that by means of the structural form that sealing and flow adjustment are staggered among the valve clack, the valve cage and the valve seat, washing of media to the sealing faces is avoided, and meanwhile the pressure in a cage cover is balanced, so that the stability of vertical lifting operation of the valve rod is guaranteed.

The invention relates to a sealing gasket bar for an automobile lamp and a preparation method. The sealing gasket bar comprises an annular steel ring (10) with the outer surface being provided with aplurality of evenly-distributed hemispherical concave points, thermoplastic polyurethane elastic particles (20) fixed to the corresponding concave points, and a teflon shell (30) wrapping the particles (20). The sealing gasket bar has ultrahigh airtightness, elasticity and external toughness.

The invention discloses an installation device for a sealing strip of an automobile radiator. The device comprises a machine frame, an installation rod, a first motor, a gear, a right rack, a right upright rod, a right buffer, a right clamping plate, a left rack, a left upright rod, a left buffer, a left clamping plate, an installation seat, a housing, a slide rail, a lead screw, a second motor, aslide block, a pneumatic cylinder, a pressing wheel group and the like. According to the installation device, the structure is reasonable and simple, the production cost is low, the installation is facilitated, and the radiator can be automatically clamped, so that the working efficiency is improved; the buffers are arranged, the radiator can be effectively protected, and the radiator is prevented from being damaged by clamping; a plurality of arranged pressing wheels work together, so that the working efficiency is greatly improved, the installation effect is good, the sealing strip is ensured to be pressed, and the sealing performance of the radiator is not influenced at a later stage; and each part does not need complex machining, so that the production cost is low, and the device is suitable for the large-scale promotion.

The invention discloses a surface active agent solution packaging device capable of reducing loss. The surface active agent solution packaging device comprises a tank body. A sleeve is arranged on theouter portion of the tank body, the tank body is completely located in the sleeve, a space allowing water to circulate is arranged between the tank body and the sleeve, a sealing cover at the top ofthe tank body comprises two door planks which are mutually connected, and one sides of the two door planks are both hinged to the top of the tank body; the directions that the two door planks rotate on the tank body around the hinged end are opposite, a sealing pad is arranged between the sealing cover at the top of the tank body and an upper cover at the top of the sleeve, and the sealing pad ispasted to a connecting seam of the two door planks and seals the connecting seam; and the sealing pad is connected with the upper cover at the top of the sleeve through a vertically placed spring, andthe upper cover at the top of the sleeve is movably connected with the sleeve. According to the surface active agent solution packaging device capable of reducing the loss, condensate water or heat preservation water is poured into a space between the tank body and the sleeve to be used for adjusting the temperature of the environment where the tank body is located, so that a fluorine-containingsurface active agent is located in a best storage environment, and the quality guarantee period can be prolonged.

The invention belongs to the technical field of household appliances, and particularly relates to a water heater. The invention aims to solve the problem that the sealing performance and the production efficiency of a liner are influenced due to the fact that an existing mineralization device is mounted on a mounting hole formed in the liner. The water heater comprises a metal water storage container, a magnet piece and a water quality treatment module located in the metal water storage container and immersed in water, wherein the magnet piece is connected with the water quality treatment module, the magnet piece and the inner wall of the metal water storage container can magnetically attract each other, and thus dismounting and mounting are convenient, it is not necessary to form a mounting opening in the metal water storage container, the processing steps of the metal water storage container are reduced, the processing efficiency is improved, and the sealing performance of the metal water storage container is not influenced; and the water quality treatment module is mounted in the metal water storage container, and the size of the water heater cannot be increased.

The invention relates to the technical field of hydraulic breaking hammers, and discloses a hydraulic breaking hammer upper frequency modulation valve which is characterized by comprising a valve deck, a valve rod is arranged at the bottom of the valve deck, a valve body is arranged below the valve deck, the bottom of the valve rod extends into the valve body, a liquid inlet and a liquid outlet are formed in the left end and the right end of the valve body respectively, and a fixed cylinder is arranged in the valve body. A base with a hollow structure is fixedly connected with the bottom of the fixed cylinder, and a liquid opening is formed in the periphery of the fixed cylinder. The hydraulic breaking hammer upper frequency modulation valve has the effects that when the valve rod moves downwards to the lowest point, the outer side wall of the valve rod is right attached to an inner cavity, located at the bottom of the liquid opening, of the fixed cylinder, the liquid opening is sealed at the moment, and in the process that the valve rod moves upwards slowly, the passing amount of oil in the valve body becomes larger and larger, in the using process of the frequency modulation valve, the oil directly impacts the bottom of a connecting rod, the valve rod is not damaged, and therefore the sealing performance of the frequency modulation valve cannot be affected no matter how long the frequency modulation valve is used.

The invention discloses a household formaldehyde removal device which comprises a shell grating, and an air heating unit, a reaction unit and a cooling unit which are located in the shell grating. An air inlet is formed on one side of the shell grating; an air outlet is formed at the top of the shell grating; and the reaction unit comprises a steel pipe reactor and heat preservation cotton. A thermodynamic catalytic oxidation method used in the invention is a non-consumable formaldehyde removal method, no extra reagent needs to be consumed in the formaldehyde removal process, and meanwhile, non-noble metal oxide is used as an active component, so that the preparation cost of a catalyst is reduced; the method has a relatively good popularization value; in addition, an air inlet hole and an air outlet hole are kept horizontal, are located at the two ends of the upper half portion of an annular passage and are kept relatively in parallel; and the tops of the inner walls of the air inlet hole and the air outlet hole and the top of the inner wall of the upper half portion of the annular passage are located on the same straight line, so that a flow pattern of air in a reaction tube is close to plug flow, backmixing is reduced, and the reaction is more thorough.

The invention discloses a low-temperature lengthened stop valve capable of being completely drawn out. The low-temperature lengthened stop valve comprises a valve body, a lengthened steel pipe assembly, a valve rod and a valve deck assembly; the lengthened steel pipe assembly is fixedly arranged on the top of the valve body; the valve deck assembly is arranged on the top of the lengthened steel pipe assembly; the valve rod sequentially penetrates the valve deck assembly and the lengthened steel pipe assembly and extends into the valve body; multiple positioning supporting assemblies are arranged on the inner side of the lengthened steel pipe assembly; one end of each positioning supporting assembly abuts against the side wall of the valve rod; the lengthened steel pipe assembly is arranged between the valve deck assembly and the valve body in a sealed manner, the distance between the valve deck assembly and the valve body is increased, and therefore the low temperature of a cold box cannot influence the sealing performance of the valve deck assembly; and the positioning supporting assemblies play a role in supporting and positioning when the lengthened valve rod moves up and down, the use strength of the valve rod is guaranteed, meanwhile, the valve rod can be accurately inserted in the valve body, and mounting and demounting of the lengthened valve rod are facilitated.

The invention relates to the technical field of electrical equipment, in particular to a novel explosion-proof distribution box based on electrical automation. According to the technical scheme, the device comprises a top box, a base and a vapor chamber, a bottom box is installed at the top of the base, an explosion door is installed on the front face of the bottom box through hinges, the top box is installed at the top of the bottom box, a copper plate is installed in the top box, a top cover is installed at the top of the top box, the vapor chamber is installed on the back face of the top box, and a semiconductor chilling plate is installed on the back face of the vapor chamber. And a fan is mounted on one side of the semiconductor chilling plate. The semiconductor chilling plate is installed on the back face of the vapor chamber, refrigeration and cooling can be carried out through power-on operation of the semiconductor chilling plate, low temperature can be rapidly conducted in the distribution box through the excellent heat conduction performance of the vapor chamber and the copper plate, the operation temperature of electrical equipment in the distribution box is effectively reduced, normal operation of the electrical equipment is guaranteed, and the service life of the electrical equipment is prolonged. And the sealing performance of the device is not influenced, and the explosion-proof performance of the device is ensured.