35 results about "Flat joint" patented technology

The invention discloses an anti-leakage masonry wall, and aims to solve the problem that a straight-line-shaped flat joint of a traditional masonry wall is prone to leakage. The wall comprises a wall body built by building blocks, the wall body comprises a vertical section and a horizontal section, and a Z-shaped horizontal mortar joint is formed between the upper building block and the lower building block of the vertical section and is meshed through a tongue-and-groove structure; and vertical mortar joints are formed between adjacent building blocks in the horizontal section and are staggered up and down. A plain concrete bearing and blocking structure is further arranged, and a water baffle, a matched fixing edge, a limiting groove, a water swelling rubber strip, a limiting block and the like are arranged on the top of the building block. According to the structure, the water seepage path is prolonged, dynamic sealing is achieved, the masonry precision is guaranteed, the anti-seepage performance is cooperatively improved, and the building safety and durability are guaranteed.

The utility model discloses an airport concrete pavement dowel bar flat seam template which comprises fixing feet, a supporting frame body, a template body, a dowel bar and a dowel bar fixing piece, a bar piece bracket is welded to the rear side of a reserved through hole in the template, the pre-burying distance of the dowel bar is convenient to control, meanwhile, an easily-demoulded ring piece is arranged on the casting face side of the dowel bar, and the dowel bar fixing piece is fixed to the template body. The template at the dowel bar part can be easily removed, the damage of the concrete at the dowel bar part caused by the removal of the template is prevented, the overall quality of the concrete pavement is improved, and the dowel bar fixing part is arranged on the rear side of the template, so that the displacement of the rod piece caused by the influence of external factors such as mechanical equipment running and concrete vibration is prevented; the stability of the mounting position of the dowel bar in the concrete pouring period is ensured, the dowel bar is located at the position required by a design drawing from beginning to end, the dowel bar is stressed more uniformly in the runway operation period, and the anti-shearing force caused by resisting aircraft collision is enhanced.

The invention relates to a novel transition part for a wind turbine formed from a hollow cylindrical tubular section (1) having a plurality of connected rings (1a, 1b, 1c, 1d, 1e), the upper part of the transition part being a tower flange (11), the upper third comprising platforms (7, 8) and ribs (12), and the bottom part being a radial platform (9) having a bracket. The transition part further comprises three support columns (2), each support column comprising a support connector (4) and a corner connector (5), and six radial columns (3), the radial columns (3) being horizontal tubes narrower than the support columns (2). The support connector (4) is a component connecting the tubular section (1) by means of a female thread joint into the blind hole and connecting the upper portion of the support joint (2) by means of a circular joint. The corner connector (5) is a component having three joints: a first joint connected to the bottom portion of the support joint (2), a second joint connected to the ground or a module completing the lower truss tower, and a third joint connected to two radial joints (3) extending horizontally to the tubular section (1). And all the joints are circular joints. The X-shaped radial connector (6) is a cast iron part having two joints: a joint connecting the tubular section (1) by means of a flat joint and a joint connecting the two radial columns (3) by means of a circular joint.

The utility model relates to the technical field of chamfering tool, disclose double row chip chamfering tool, including handle, handle one end is provided with the body and the head, the head outer wall is provided with two row chip grooves of axis symmetry, the other end fixedly connected with flat joint of handle, the inside of flat joint is provided with connecting assembly, the inside of head is provided with protection assembly, connecting assembly includes hole slot and clamping block, the fixed ring is fixedly connected with the inner wall of screw cap, the inside of fixed ring is provided with the penetration of arc -shaped groove, the inside of screw cap is provided with connecting pipe, the inside of connecting pipe is provided with sliding slot, the outer wall of clamping block is connected in the inner wall of sliding slot with sliding. In the utility model, through rotating screw cap can drive inside clamping block along sliding slot and slide, make it and external equipment interface quick clamping or separate, easy operation, torsional spring provides stable reset force, ensure that self -locking is reliable in the process of connecting, avoid the loosening and falling off when processing, improve the clamping efficiency and security.

The invention relates to the technical field of building structure engineering, in particular to a beam-column joint structure and a construction method thereof. The structure comprises a concrete column with reinforcing steel bars and a plurality of concrete beams connected to column joints. The concrete beam is composed of a precast beam and a beam post-pouring laminated layer on the upper portion of the precast beam, the end of the precast beam is provided with an arc-shaped beam end joint with a notch facing the column joint, and a connecting part is poured in the joint to form an integrated structure. Through the bionic occlusion design of the arc-shaped grooves in the precast beam ends and the cast-in-place connecting parts, the space conflict limitation of the multi-beam intersection joint steel bars is broken through, the flowing path of post-pouring concrete is optimized, and the pouring compactness of the joint area is remarkably improved. Beam end shearing force transmission is improved through the curved surface guiding characteristic of the arc-shaped joint, the stress concentration phenomenon of a traditional flat joint is eliminated, node shearing stress distribution is more uniform, and the protective layer stripping risk is reduced. The prefabricated beams are integrated with arc-shaped joints and connecting piece structures, self-compacting concrete is directly poured after on-site hoisting, and the workload of node formwork erecting and steel bar adjustment is greatly reduced.

The utility model discloses a wall plate butt joint structure which is applied to bathroom building and comprises a first connecting piece, a second connecting piece, a first wall plate, a second wall plate and a mortise and tenon joint piece, one end of the first connecting piece is connected with the first wall plate, one end of the second connecting piece is connected with a second plate body, and the other end of the second connecting piece is connected with a third plate body. Mortise and tenon joint parts are arranged at the other ends of the first connecting piece and the second connecting piece, one end of the mortise and tenon joint piece is connected with the mortise and tenon joint part of the first connecting piece, and the other end of the mortise and tenon joint piece is connected with the mortise and tenon joint part of the second connecting piece. The connecting structure has the beneficial effects that the first connecting piece and the second connecting piece are both provided with the tenon-and-mortise parts, the first connecting piece and the second connecting piece are connected with the corresponding first wall plate and the second wall plate respectively, one end of the tenon-and-mortise part is inserted into the tenon-and-mortise part arranged on the first connecting piece, and then the other end of the tenon-and-mortise part is inserted into the tenon-and-mortise part arranged on the second connecting piece; by means of the design, the purpose of flush joint of the screw-free bathroom wall plates is achieved, the screw-free bathroom wall plates are not affected by the environment, the structure is simple, and the splicing purpose can be rapidly completed.

This product is intended to be used as a flat joint material to support the ends of eaves ceiling boards, as shown in the reference schematic diagram showing how it is used.

The application provides a flat tensile strength simulation analysis method and device of a flat joint, wherein the method comprises the following steps: intercepting part of the flat joint in a buckling state as an analysis model, and respectively modeling the inner tooth, outer tooth and base cloth of the analysis model; setting the contact parameters and material parameters of each part of the analysis model; setting the coordinate system of the analysis model; selecting the loading point and constraint point of the analysis model, adding corresponding constraints to the constraint point, and applying a flat tensile strength load to the loading point to perform simulation calculation; analyzing the simulation output result of the analysis model to determine the flat tensile strength load of the flat joint; measuring the inner tooth and outer tooth closest to the loading point or constraint point, intercepting a cross section at the middle position of the tooth width at the position, and taking the Z-direction distance value between the lowest point of the inner tooth root and the highest point of the outer tooth buckling area to determine whether the distance between the two is reduced from the initial value to 0; if so, the tensile constraint reaction force at this time is determined as the flat tensile strength load.

The invention belongs to the technical field of foundation pit engineering, and discloses a continuous open caisson sealing and water stopping connecting structure and a construction method.The continuous open caisson sealing and water stopping connecting structure comprises two sealing and water stopping connecting pieces, and each sealing and water stopping connecting piece comprises a groove; a bump; two notches; a reinforcement cage; and the post-pouring concrete body is formed after concrete is poured into the pouring cavity, the formed post-pouring concrete body wraps the steel reinforcement framework, and the post-pouring concrete body and the two adjacent open caissons are anchored into a whole. According to the method, the convex blocks and the grooves are matched for limiting, so that the convex blocks on the sunk well which sinks later can slide in the grooves of the sunk well which sinks first, the positioning effect is achieved, and compared with a flat joint, the connection of the convex blocks and the grooves can prolong the water seepage path, and the water seepage probability of the connecting joint of the two adjacent sunk wells is greatly reduced; the two adjacent open caissons are connected and anchored through the post-poured concrete body, connection is stable, the post-poured concrete body blocks the connecting seam of the protruding block and the groove, and water seepage is further prevented.

The invention relates to the technical field of hot dipping, in particular to continuous hot dipping equipment which comprises a rotating mechanism arranged in the middle of a platform, a clamping mechanism arranged on the rotating mechanism, and a feeding mechanism, a dipping mechanism and a discharging mechanism which are arranged on the platform in the circumferential direction. The clamping mechanism comprises a clamping jaw assembly arranged on the rotating mechanism and used for clamping a cross beam part of the workpiece, an outer supporting assembly arranged on the clamping jaw assembly and used for clamping two butt joint parts of the workpiece, and a covering and sealing assembly arranged on the clamping jaw assembly and used for covering the workpiece. A pure mechanical clamping mode is adopted, electric structure control is not needed, workpieces can be automatically clamped and released, a clamping mechanism cannot be contaminated by metal liquid, the service life is prolonged, continuous hot dipping work can be carried out, and the problems that a traditional electric clamp is prone to being contaminated by the metal liquid, electronic elements on the clamp are damaged, and the production efficiency is high are solved. And normal use of the clamp is influenced.

The application discloses a steel pipe pile underwater flat joint construction device and a construction method. The steel pipe pile underwater flat joint construction device comprises a float, a flat joint assembly and a locking piece. The float has a containing cavity for containing medium. The float is used in sliding fit with the steel pipe pile. The float has a first position and a second position. The float is switched between the first position and the second position. The first position is the position of the float when the float does not contain medium. The second position is the position of the float when the float contains medium with a preset volume. The flat joint assembly is connected to the float. The locking piece has a locking state and an unlocking state. When the locking piece is in the locking state, the locking piece is used for locking and connecting the float in the first position or / and the second position to the steel pipe pile. When the locking piece is in the unlocking state, the float is in sliding fit with the steel pipe pile. The construction difficulty of the underwater flat joint assembly is greatly reduced, large lifting equipment is not needed, and the increase of the steel cost is avoided.

The butt joint connection structure of the seamless plug-in type aluminum honeycomb wallboards comprises a plurality of aluminum honeycomb wallboards which are located on the same installation plane and connected in sequence and fixed connection pieces installed between the adjacent aluminum honeycomb wallboards. The two opposite sides of the aluminum honeycomb wallboard are provided with a concave block material and a convex block material which can be installed in an inserted mode, and a connecting piece installation cavity used for installing and fixing a connecting piece is reserved between the concave block material and the convex block material which are connected in an inserted mode. The concave block material is hung at the bottom of the fixed connecting piece; compared with the prior art, the concave block material and the convex block material on the two sides of the same aluminum honeycomb wallboard are hung, inserted and mounted in sequence through the fixed connecting pieces and the aluminum honeycomb wallboards, so that the aluminum honeycomb wallboards are hung through the fixed connecting pieces while the aluminum honeycomb wallboards are connected in sequence; the whole installation mode is convenient and reliable, and the structure is simple.

The utility model relates to the technical field of three -way joint, specifically disclose a wear -resisting three -way joint, including three -way joint, two horizontal joint's bottom is provided with wear -resisting structure, wear -resisting structure includes integrated mounting panel and wear plate, is set up on wear plate multiple wear -resisting recess, integrated on wear plate multiple wear -resisting convex, multiple wear -resisting recess and multiple wear -resisting convex interval arrangement, through setting wear -resisting structure in the vertical joint's right below, can reduce the impact of water flow buffering and the long -term wear and tear of water flow to the inner wall bottom end of horizontal joint, specifically when water flow flows down from the vertical joint, water flow and multiple wear -resisting recess and multiple wear -resisting convex on wear plate contact, and then through multiple wear -resisting recess and multiple wear -resisting convex can disperse water flow, slow down the impact of water flow, avoid the water that flows down from the vertical joint directly with the inner bottom end of horizontal joint contact to realize the effect of wear -resisting protection to three -way joint.

This invention relates to the field of hot-dip plating technology, specifically to a continuous hot-dip plating equipment. It includes a rotating mechanism positioned in the middle of a platform, a clamping mechanism mounted on the rotating mechanism, and a loading mechanism, a plating mechanism, and a unloading mechanism mounted on the platform along the circumferential direction. The clamping mechanism includes a jaw assembly on the rotating mechanism for clamping workpieces, an outer support assembly on the jaw assembly for clamping workpieces at two flat joints, and a cover assembly on the jaw assembly for covering the workpieces. This invention employs a purely mechanical clamping method, requiring no electrical control structure, and can automatically clamp and release workpieces. The clamping mechanism does not come into contact with molten metal, thus improving its service life. It can perform continuous hot-dip plating operations, solving the technical problem that traditional electrical clamps are easily contaminated with molten metal, leading to damage to electronic components and affecting the normal use of the clamps.

To provide a drive recorder capable of reducing working cost and weight regardless of a configuration in which an angle of a camera body is freely adjusted.SOLUTION: A drive recorder 1 includes: a vehicle joining part 20 in which a joining member 22 joined to a vehicle is attached to a vehicle attachment surface 21a and a flat joining member 23 is attached to a support surface 21b; and a camera body 100 which incorporates an imaging element. A spherical surface joining member 32 is pressed to the flat joining member 23, after an angle of the camera body 100 is adjusted, to maintain an attitude of the camera body 100.SELECTED DRAWING: Figure 1

The invention discloses an underground building new and old wall surface joint construction process, which belongs to the technical field of underground building construction, and comprises the following steps: S1, foundation strengthening treatment; s3, tongue-and-groove construction; s4, performing waterproof treatment; the new wall body is staggered with the external corner and is in parallel butt joint with the old wall body, the construction difficulty is reduced, water seepage caused by too large forming gaps is prevented, multiple water prevention is constructed through a tongue-and-groove structure, a plurality of flexible water stoppers and drainage grooves, and internal water seepage is prevented.

The utility model relates to the technical field of wall decoration, and provides a fixing structure and a butt joint piece of a wall brick composite board and a wall board, the fixing structure of the wall brick composite board and the wall board comprises the wall board fixedly connected on a wall body; the wall brick composite board is fixedly connected to the wall body in a manner of being adjacent to the wall board left and right; and the flush joint piece is fixedly connected to the wall body at the joint position of the wall plate and the wall brick composite plate, and is respectively clamped with the joint end face of the wall plate and the wall brick composite plate. According to the utility model, the flat connecting piece is fixedly connected to the wall body at the joint position of the wall plate and the wall brick composite plate, and is respectively clamped with the joint end surfaces of the wall plate and the wall brick composite plate, so that the wall brick composite plate and the wall plate are fixedly connected to the wall body in a splicing manner, and the problem of splicing and fixing the wall brick composite plate and the wall plate is solved; and the firmness of the wall brick composite board and the wall board on the wall body is also improved.

The utility model discloses a flat seam vertical connection assembly type shear wall structure which comprises an assembly type shear wall body, an inverted trapezoidal tooth groove is integrally formed in the lower portion of the assembly type shear wall body, a C60 cushion block is integrally arranged at the bottom of the inverted trapezoidal tooth groove, a ground beam is connected to the lower portion of the C60 cushion block, and the lower portion of the ground beam is connected with a horizontal beam. A grouting groove is formed in the shear wall body and comprises steel bars and filling slurry on the peripheries of the steel bars, and the filling slurry is concrete. According to the design of the trapezoid structure, concrete flowing in the grouting process is promoted, grouting compactness is guaranteed, dark part cavities are avoided, the shear strength of the connecting part is improved, the steel bar lap joint length is reduced in the construction process of the connecting structure, the construction steps are simplified, the construction cost is reduced, the construction period is shortened, ultra-high-performance concrete is adopted as a grouting material, and the construction cost is reduced. Compared with a cast-in-place structure, the anti-seismic performance of the shear wall is enhanced, and the shear wall has better anti-seismic capacity and durability.

The utility model discloses a bathroom ceramic tile plate flush joint type buckle connecting device, which belongs to the technical field of building decoration materials, and comprises a wall plate assembly, a buckle assembly, a force bearing mechanism and a sealing mechanism, when the two wall plates are connected, the first wall plate is fixed to the wall face through polystyrene foam, the lower clamping jaw of the second wall plate is inserted into the mounting groove of the first wall plate, finally, the second wall plate is horizontally pushed to enable the lower clamping jaw to be clamped into the mounting groove, and during mounting, the slope guide structure of the lower clamping jaw makes contact with the mounting groove firstly to generate elastic deformation; the elastic arms restore to the original shape to form mechanical interlocking, locking can be unlocked by pressing the clamping jaws to release the protrusions through a special crowbar during disassembly, the installation efficiency is improved, a single person can complete standard bathroom wall plate installation, a single wall plate can be independently disassembled during maintenance, the secondary decoration cost is reduced to the maximum extent, the vertical lifting action during ceramic tile plate installation is eliminated, and the installation efficiency is improved. Inserting installation in the pure horizontal direction is achieved, and the corrosion resistance of the connecting piece in the humid environment is improved.

The invention discloses a foundation pit support structure for pipe connecting point construction and a construction method thereof.The foundation pit support structure comprises four arc-shaped steel plates which are symmetrically arranged around an existing pipeline and a proposed pipeline with the pipe connecting point as the center, and the arc-shaped steel plates keep a certain distance from the existing pipeline and the proposed pipeline; every two adjacent arc-shaped steel plates are connected through a plurality of rectangular steel plates, and the arc-shaped steel plates and the rectangular steel plates form a rectangle with four arc angles on a plane graph. The vertical connectors are arranged at the two ends of the arc-shaped steel plate, the rectangular steel plates are vertically embedded into the vertical connectors, the horizontal connectors are arranged at the tops of the rectangular steel plates, the rectangular steel plates are vertically connected through the horizontal connectors, and a force transmission structure formed by the vertical connectors and the horizontal connectors can effectively transmit bending moment, axial force and shearing force and has waterproof performance. A space stress structure similar to a cylinder is formed, effective supporting can be formed on soil bodies below pipelines which cannot be supported by the cylinder, and the structure is suitable for construction of pipe connecting point foundation pits with different pipe diameters and burial depths.

The application discloses a forming device and forming process of a bimetal composite profile, relates to the technical field of machining, and comprises a bimetal composite extrusion forming unit, an electric auxiliary online heat treatment unit, a guide unit and a roller pressure forming unit. The bimetal composite extrusion forming unit comprises a die structure, the die structure is used for forming a bimetal composite plate with a non-flat joint interface, the guide unit guides the bimetal composite plate, the roller pressure forming unit roller-presses the bimetal composite plate, and the electric auxiliary online heat treatment unit heat-treats the bimetal composite plate. The forming process comprises a production preparation stage, bimetal composite plate extrusion and combination with a special-shaped joint interface, continuous roller pressure forming and heat treatment. On the basis of improving the quality of the composite profile and enhancing the joint interface strength, the application greatly improves the production efficiency and expands the application range of the special-shaped cross-section composite profile.

The application provides a turbine rear casing pipeline assembly structure connected by different cross-section joints, comprising: a circular joint on a bearing seat of a turbine rear casing, an outer surface of the circular joint being provided with a threaded structure, a lower end surface of the circular joint being provided with a groove, and a flat channel being arranged in the groove; and a pipeline assembly connected with the circular joint by penetrating an inner cavity of a support plate of a load-bearing frame, the pipeline assembly comprising a flat pipe, an upper end of the flat pipe being fixed with a flat joint, and a lower end of the flat pipe being fixed with an external pipe joint; wherein the flat joint has a flat pipe part fixed integrally with the flat pipe and a base part integrated with the flat pipe part, the base part being an axisymmetric structure with two ends in a circular arc shape and the other two ends in a flat shape, the base part being installed in the groove on the circular joint and being fixed by a sleeve nut and an elastic snap ring. The pipeline assembly structure of the application does not need to be welded with the load-bearing frame, is convenient to assemble and disassemble, and has good workability and maintainability.

The invention provides a combined support for extremely-small-radius intercommunication ramp high-pier cast-in-place box girder construction, and relates to the technical field of box girder construction, the combined support comprises a plurality of steel pipe columns close to a pier column on one side, and a concrete base is prefabricated at the bottom of each steel pipe column and fixedly connected with a foundation bolt through an embedded steel plate; the top walls of the multiple steel pipe columns are horizontally and fixedly provided with double-spliced I-shaped steel, and a parallel connection frame is fixedly connected between every two adjacent steel pipe columns. The device comprises a pier column, and further comprises a cow foot support, a bailey beam net rack, a disc buckle net rack and a steel rope net, the steel rope net is wound from the bottom of one side of the pier column to the top of the pier column and covers the other side of the pier column, the steel rope net is hooped on the pier column through an annular steel wire rope, and the end of the bailey beam net rack and the end of the disc buckle net rack are fixed to the steel rope net through connecting rods. The method has the advantages of being safer, smaller in occupied area and higher in construction efficiency, and the economical efficiency can be improved.

The invention relates to a novel rectangular sleeve structure assembly type diaphragm wall horizontal joint and a construction method. The novel rectangular sleeve structure assembly type diaphragm wall horizontal joint comprises a sleeve, a clamping groove, a convex rectangular body and an embedded part. The connecting structure has the beneficial effects that the upper and lower diaphragm wall components are reliably connected, multiple mechanical occlusion is formed through concave-convex matching of the rectangles and the sleeves, the connecting strength of the upper and lower sections of diaphragm walls is greatly improved, and the overall stability of the structure is guaranteed; meanwhile, the upper and lower diaphragm wall components are good in impermeability, the seepage path of water is effectively blocked through the concave-convex matched joint form, and the impermeability of the underground diaphragm wall is improved; the underground diaphragm wall prefabricated assembly type structure is convenient to construct, factory prefabrication and on-site assembly of the assembly type structure are achieved, the construction process is simplified, the construction efficiency is improved, and the construction cost is reduced; the fabricated structure is regular in shape and wide in applicability, the specifications of the convex rectangular bodies, the sleeves and the embedded parts can be adjusted according to the size and load requirements of different underground diaphragm walls, and the fabricated structure is suitable for various underground engineering scenes.

The invention provides a microcatheter and a preparation method of the microcatheter. The microcatheter comprises an outer layer, an inner layer, a braid layer and a developing ring, the outer layer covers the braid layer and the developing ring, and the inner layer is lined in the braid layer and the developing ring; the developing ring is coaxially welded to the far end of the braid layer through a plurality of first welding spots distributed in the circumferential direction. The outer diameter of the developing ring does not exceed the range of the circumferential outer contour of the far end of the braid layer. According to the configuration, the developing ring is coaxially welded to the far end of the braid layer, the outer diameter of the developing ring does not exceed the circumferential outer contour range of the far end of the braid layer, sudden increase of the outer diameter of the far end part of the micro catheter is eliminated, and the outer diameter of the micro catheter is uniform. The developing ring and the braid layer are welded in a butt joint manner, so that the sudden rigidity change of the developing ring area is reduced, the stress concentration phenomenon is reduced, the fatigue life of the interface of the braid layer and the developing ring is prolonged, and the developing property, the flexibility and the durability of the microcatheter are effectively considered.

The application discloses a pipeline and pipe gallery joint construction method, comprising the following steps: S1. purchasing red copper sheet according to the specification requirements, and processing and manufacturing type A water stop belt and type B water stop belt through the red copper sheet; S2. processing and manufacturing type A red copper ring through pressure conversion in a prefabricated pipe factory; S3. prefabricated pipeline type A red copper ring construction: pouring pipeline concrete in a normal way, embedding one end of the type A red copper ring in the pipeline concrete at both ends of the pipeline, completing the pipeline concrete pouring, completing the curing period, and disassembling the circular ring mold; S4. processing and manufacturing type B red copper ring through pressure conversion at the pipeline in-joint in a pipeline laying construction site; S5. setting a joint water stop device, and welding the type B red copper ring on both sides to the type A red copper ring; S6. protecting the joint water stop device; and S7. pressure test. The application creates a flat joint overall belt-shaped red copper sheet water stop device and a pipeline joint method construction, and the prefabricated reinforced concrete pipeline engineering is long-distance pressure water conveying, and the pipeline joint does not cause water leakage, effectively solving the problem of water leakage of the prefabricated reinforced concrete pipeline joint.

The utility model relates to a water-cooling jacket type high-temperature plunger valve which comprises a valve body, a valve seat and a packing gland are installed at the two ends of the valve body respectively, a plunger is arranged in the valve body, the valve seat and the packing gland in a sliding mode, a gas sealing structure is arranged between the packing gland and the plunger, a valve body centrally-arranged guide is arranged in one end of the valve body, and the plunger moves along the valve body centrally-arranged guide. The valve seat is close to the valve body middle guide; a stuffing box is arranged in the other end of the valve body, a guide sleeve and a stuffing set are arranged in the stuffing box, a gland hole and a vent hole which are communicated with each other are formed in the stuffing gland, a first sealing ring, a gas sealing cavity and a second sealing ring are sequentially arranged in the gland hole, the gas sealing cavity is communicated with the vent hole, and the vent hole and the gas sealing cavity form a gas sealing structure. The valve seat and the equipment flange are of a welded integrated flush joint structure, the plunger is designed to be short in stroke, and the requirement for installation in a compact space is met.

The invention discloses a truss steel bar two-way laminated slab separating type joint structure and a construction method. The truss steel bar two-way laminated slab separating type joint structure comprises a plurality of prefabricated laminated slabs and a cast-in-place layer. The plurality of prefabricated laminated slabs are adjacently arranged, and a separated joint is reserved between every two adjacent prefabricated laminated slabs; the adjacent plate sides of the prefabricated laminated plates are provided with upper chamfers, lower chamfers and parallel middle side faces respectively, a lower chamfer inclined joint is formed between the lower chamfers of every two adjacent prefabricated laminated plates, a flat joint is formed between the middle side faces of every two adjacent prefabricated laminated plates, and an upper opening is formed between the upper chamfers. The cast-in-place layer is cast above the prefabricated laminated slabs and between the upper openings of the two adjacent prefabricated laminated slabs; the prefabricated laminated slab and the cast-in-place layer are internally provided with distributed steel bars perpendicular to the slab side direction and load-bearing steel bars perpendicular to the slab end direction, the distributed steel bars perpendicular to the slab side direction are not exposed, and the exposed steel bars are the load-bearing steel bars perpendicular to the slab end direction in the prefabricated laminated slab. According to the invention, the production and installation difficulty of the laminated slab is effectively reduced, the formwork erection at the joint position is reduced, and the potential quality hazards such as cracking and slab staggering at the joint position are eliminated.