A valve installation device and method for sectional water shutdown construction

Abstract

The application belongs to the technical field of valve installation, and particularly relates to a valve installation device and method capable of carrying out sectional water stop construction, which comprises two pipe bodies, a valve body is arranged at the middle part of each pipe body, a connecting mechanism is arranged between the pipe body and the valve body, a sealing mechanism is arranged on the outer side of the connecting mechanism, the sealing mechanism comprises two sealing covers, the two sealing covers are respectively sleeved on the outer side of the connecting mechanism, a work-shaped insertion rod is inserted into two through holes of the same-side sealing cover, during the sleeving process, the sleeve needs to be pulled away from the fixed plate by one hand, when one end of the work-shaped insertion rod extends to the outer side of the sealing cover, the sleeve is loosened, the sleeve and the sliding rod are quickly reset under the action of the first spring, the tapered block is inserted into one end of the work-shaped insertion rod through the sliding rod, so that the positioning and clamping of the work-shaped insertion rod are realized. The connecting mechanism is sealed and waterproofed through the sealing cover, and the service life and the sealing property of the connecting mechanism are improved.

Description

Technical Field

[0001] This invention belongs to the field of valve installation technology, specifically a valve installation device and method that allows for zoned water shut-off construction. Background Technology

[0002] When repairing or renovating urban water supply networks, it is necessary to partially shut off the water flow without affecting the normal water supply to other areas. Therefore, it is necessary to divide the network into multiple independent zones, each with a corresponding valve. This way, the water supply to only the specific zone is shut off during construction. A valve is a mechanical device used to control the flow of fluid. It controls the system process by regulating, guiding, stopping, or diverting fluid. For valve installation, bolts and flanges are generally used to directly fix the valve to the pipeline.

[0003] Chinese patent CN116771971B discloses a valve connection device and installation method, including: a connecting end is provided on the side of the valve body, a pipe is provided at one end of the connecting end, a second damping bearing is provided on the side of the threaded sleeve, a bracket is provided on the surface of the second damping bearing, a vertical rod is provided on the surface of the bracket, a support rod is provided on the surface of the vertical rod, a positioning plate is provided at one end of the support rod, and a second positioning plate is provided at the bottom of the positioning plate; when the valve body is connected to the pipe, the cooperation between the positioning plate and the second positioning plate can be used to hold the pipe in place, and then rotating the threaded sleeve increases the stabilizing effect of the positioning plate and the second positioning plate on the pipe, preventing the valve body from loosening when connected to the pipe, and the sealing ring squeezes the sealing rubber sleeve to increase the seal between the connecting end and the pipe to prevent leakage.

[0004] In current technology, valve bodies require a sliding block, upright rod, support rod, and positioning plate connection structure for installation. However, these connection structures are all exposed to the elements and will corrode after prolonged exposure to sun and rain, resulting in loose connections. If the components are corroded, they may not be able to effectively secure the pipeline, causing the connections to loosen or even fall off. In terms of maintenance costs, frequent replacements or repairs will increase time and expenses.

[0005] Therefore, the present invention provides a valve installation device and method for phased water outage construction. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: A valve installation device for zoned water shut-off construction, comprising two pipe bodies; a valve body is installed in the middle of the two pipe bodies, and a connecting mechanism is provided between the pipe bodies and the valve body; a sealing mechanism is provided on the outer side of each connecting mechanism; each sealing mechanism includes two sealing covers, and two through holes are opened on the adjacent side walls of the two sealing covers. An I-shaped rod is inserted into each of the two through holes on the same side, and one end of the I-shaped rod extends to the outer side of the sealing cover; two fixing plates are fixedly connected to the outer wall of the sealing cover, and a sliding rod is slidably connected to each of the two fixing plates. A conical block is fixedly connected to one end of each sliding rod, and the conical block is inserted into one end of the I-shaped rod; a sleeve is fixedly connected to the other end of each sliding rod, and a first spring is sleeved on the outer side of each sliding rod, with the two ends of the first spring fixedly connected to the sleeve and the fixing plate, respectively.

[0008] Preferably, sealing rings are fixedly connected to the inner walls of both ends of the sealing cover, a sealing groove is provided on the outer wall of one of the sealing covers, and a sealing strip is fixedly connected to the outer wall of the other sealing cover, the sealing strip being inserted into the sealing groove.

[0009] Preferably, silicone boxes are fixed to both ends of the sealing cover, and silicone grooves are formed on the inner sidewalls of both ends of the sealing cover. The silicone boxes and silicone grooves are filled with water-absorbing silicone.

[0010] Preferably, the connecting mechanism includes pipe flanges fixed to one end of the two pipe bodies. Each pipe flange has a sliding ring slidably connected to its side wall away from the valve body. Each sliding ring has multiple limiting posts fixed to its side wall near the valve body. Each limiting post penetrates the pipe flange. Each limiting post has a limiting groove on its outer wall. Each limiting groove has two fixing sleeves on its outer wall. Both ends of the two fixing sleeves are fixed by fastening bolts.

[0011] Preferably, a second spring is fixedly connected to the side wall of the moving ring away from the valve body, and an outer cylinder is fixedly connected to the outer wall of the tube body, with the outer cylinder located outside the second spring.

[0012] Preferably, sealing rings are affixed to both sides of the fixing sleeve, and the sealing rings are tightly fitted to the limiting groove.

[0013] Preferably, a connecting seat is fixedly connected to the bottom of the valve body, a base is provided below the connecting seat, and a mounting seat is fixedly connected to the top of the base. The connecting seat is located inside the mounting seat. A cavity is opened inside the mounting seat, and a bidirectional lead screw is rotatably connected to the inner wall of the cavity via a bearing. Two L-shaped plates are threaded onto the bidirectional lead screw, and the L-shaped plates are inserted into the connecting seat through the mounting seat. A rotating block is fixedly connected to one end of the bidirectional lead screw.

[0014] Preferably, two guide rods are fixedly connected inside the cavity, and the L-shaped plates are slidably connected on the guide rods.

[0015] Preferably, a guide tube is fixed to the inner wall of the end of the tube near the valve body, and the inner diameter of the guide tube near the valve body is smaller than the inner diameter of the end away from the valve body.

[0016] A preferred method for valve installation that allows for zoned water outages includes the following steps: S1: Pre-assembly of pipe body and valve body: Align one end of each of the two pipe bodies with the two sides of the valve body respectively. During the alignment process, under the action of the second spring, the limiting post is inserted through the pipe body flange with its limiting groove facing outward for initial fixation, so that the pipe body flange fits into the valve body. S2: Fixing sleeve locking: Two fixing sleeves are fitted together on the outer wall of the limiting groove, and the fastening bolts pass through the fixing sleeves and are screwed into the limiting groove to realize the axial limiting of the moving ring; S3: Sealing mechanism assembly: The two sealing covers are respectively fitted onto the outside of the connection between the pipe body and the valve body; then the I-shaped plug is inserted into the two through holes of the sealing cover on the same side, and one end of the I-shaped plug extends to the outside of the sealing cover; and the tapered block is aligned with the end of the I-shaped plug and inserted to clamp the I-shaped plug. S4: Valve body positioning: Place the connecting seat into the cavity of the mounting seat; rotate the rotating block to drive the bidirectional lead screw to move the two L-shaped plates synchronously in opposite directions, and position the valve body by inserting the L-shaped plates into the connecting seat; then fix the base on the pre-embedded seat.

[0017] The beneficial effects of this invention are as follows: 1. The valve installation device and method for zoned water shut-off construction described in this invention involves setting up sealing covers, with two sealing covers respectively fitted onto the outside of the connecting mechanism; then, an I-shaped insert rod is inserted into the two through holes of the sealing cover on the same side. During the fitting process, the other hand needs to pull the sleeve away from the fixed plate. When one end of the I-shaped insert rod extends to the outside of the sealing cover, the sleeve is released. Under the action of the first spring, the sleeve and the sliding rod quickly return to their original positions. The sliding rod drives the conical block to be inserted into one end of the I-shaped insert rod, thereby achieving the positioning and clamping of the I-shaped insert rod. The sealing covers seal and waterproof the connecting mechanism, improving the service life and sealing performance of the connecting mechanism.

[0018] 2. The valve installation device and method for zoned water shut-off construction described in this invention utilizes a limiting post, a moving ring, and a fixing sleeve. The connection between the valve body and the pipe body is reinforced by the valve body flange and the pipe body flange. During installation, the limiting post is pushed towards one side of the pipe body flange. During alignment of the valve body flange and the pipe body flange, the valve body needs to be slightly rotated. During this rotation, when the port on the valve body flange aligns with the port on the pipe body flange, the limiting post and the moving ring quickly reset under the action of a second spring. The limiting post penetrates the pipe body flange with its limiting groove facing outwards, providing initial fixation and ensuring a close fit between the valve body flange and the pipe body flange. Two fixing sleeves are fitted together on the outer wall of the limiting groove, and fastening bolts pass through the fixing sleeves and are screwed into the limiting groove to achieve axial limiting of the moving ring. Attached Figure Description The invention will now be further described with reference to the accompanying drawings. Figure 1 This is a perspective view of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the sealing cover structure in this invention; Figure 4 This is an exploded view of the sealing cover and the I-shaped insert in this invention; Figure 5 This is a cross-sectional view of the conical block in this invention; Figure 6 This is a schematic diagram of the outer cylinder in this invention; Figure 7 This is an exploded view of the movable replacement and pipe flange in this invention; Figure 8 This is a cross-sectional view of the base in this invention; Figure 9 This is a flowchart of a method according to an embodiment of the present invention; In the diagram: 1. Pipe body; 2. Valve body; 3. Sealing cover; 31. Sealing ring; 32. Sealing groove; 33. Silicone box; 34. Silicone groove; 35. Through hole; 36. I-shaped insert rod; 37. Conical block; 371. Sliding rod; 372. Sleeve; 373. First spring; 374. Fixing plate; 4. Outer cylinder; 41. Second spring; 42. Moving ring; 43. Limiting post; 44. Pipe body flange; 45. Fixing sleeve; 46. Sealing ring; 47. Fastening bolt; 5. Base; 51. Mounting seat; 52. Connecting seat; 53. Cavity; 54. Two-way screw; 55. Guide rod; 56. L-shaped plate; 57. Swirl block; 6. Guide pipe. Detailed Implementation To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0019] like Figures 1 to 2 As shown in the embodiment of the present invention, a valve installation device for zoned water shut-off construction includes two pipe bodies 1; a valve body 2 is installed in the middle of the two pipe bodies 1, and a connecting mechanism is provided between the pipe bodies 1 and the valve body 2; a sealing mechanism is provided on the outer side of each connecting mechanism; each sealing mechanism includes two sealing covers 3, and two through holes 35 are opened on the adjacent side walls of the two sealing covers 3. An I-shaped insert rod 36 is inserted into the two through holes 35 on the same side, and one end of the I-shaped insert rod 36 extends to... The outer side of the sealing cover 3; two fixing plates 374 are fixedly connected to the outer wall of the sealing cover 3, and a sliding rod 371 is slidably connected to each of the two fixing plates 374. A conical block 37 is fixedly connected to one end of each sliding rod 371, and the conical block 37 is inserted into one end of an I-shaped insert rod 36. A sleeve 372 is fixedly connected to the other end of each sliding rod 371, and a first spring 373 is sleeved on the outer side of each sliding rod 371. The two ends of the first spring 373 are fixedly connected to the sleeve 372 and the fixing plate 374 respectively.

[0020] When repairing or renovating urban water supply networks, it is necessary to partially shut off the water flow without affecting the normal water supply to other areas. Therefore, it is necessary to divide the network into multiple independent zones, each with a corresponding valve. This way, the water supply to only the specific zone is shut off during construction. The valve body requires a connecting structure consisting of a slider, upright, support rod, and positioning plate. However, these connecting structures are all exposed to the elements and are prone to corrosion over time due to sun and rain exposure. This can lead to loose connections and, if components are already corroded, may fail to effectively secure the pipes, causing the connections to loosen or even detach. Furthermore, frequent replacements or repairs increase maintenance costs and time. In use, the sealing mechanism provided by this invention involves fitting two sealing covers 3 onto the outside of the connecting mechanism. Then, an I-shaped insert 36 is inserted into the two through holes 35 of the sealing cover 3 on the same side. During this fitting process, the other hand pulls the sleeve 372 away from the fixing plate 374. When one end of the I-shaped insert 36 extends to the outside of the sealing cover 3, the sleeve 372 is released. Under the action of the first spring 373, the sleeve 372 and the slide rod 371 quickly return to their original positions. The slide rod 371 then drives the conical block 37 to be inserted into one end of the I-shaped insert 36, thereby achieving positioning and clamping of the I-shaped insert 36. The sealing covers 3 provide a waterproof seal for the connecting mechanism, improving its service life and sealing performance.

[0021] like Figure 2 and Figure 3 As shown, sealing rings 31 are fixedly connected to the inner walls of both ends of the sealing cover 3. A sealing groove 32 is opened on the outer wall of one of the sealing covers 3, and a sealing strip is fixedly connected to the outer wall of the other sealing cover 3. The sealing strip is inserted into the sealing groove 32.

[0022] The sealing ring 31 and sealing strip provided by the present invention are used to waterproof the inside of the sealing cover 3. By setting the sealing ring 31, it is easy to tightly fit the sealing cover 3 with the outer wall of the tube body 1. By setting the sealing strip, it is easy to tightly fit the connection between the two sealing covers 3, thereby improving the waterproofness of the sealing cover 3.

[0023] The sealing strip is typically made of elastic material, which can be embedded in the sealing groove 32 and undergo moderate compression deformation to automatically fill tiny gaps caused by bolt preload decay or temperature changes. The interlocking structure formed by the sealing strip inserted into the sealing groove 32 can resist lateral vibration and axial impact generated during equipment operation.

[0024] like Figure 3 and Figure 4 As shown, silicone boxes 33 are fixed to both ends of the sealing cover 3, and silicone grooves 34 are provided on the inner sidewalls of both ends of the sealing cover 3. The silicone boxes 33 and silicone grooves 34 are filled with water-absorbing silicone.

[0025] The absorbent silicone provided by this invention possesses extremely strong moisture absorption capacity, actively absorbing condensation inside the sealing cover 3 caused by temperature differences or medium evaporation, preventing corrosion of the metal surfaces at the connection between the pipe body 1 and the valve body 2 due to prolonged contact with a humid environment. Especially under conditions of large day-night temperature differences or humid climates, traditional sealing structures are prone to internal corrosion due to condensation, while this design eliminates potential problems at the outset through the absorbent silicone. Furthermore, the absorbent silicone has a certain degree of elasticity, allowing it to absorb mechanical impact energy through slight deformation when pressure changes suddenly occur within the pipeline, reducing stress concentration on rigid connection structures. Frequent pressure fluctuations during long-term operation can easily lead to loose threads or flange wear; the buffering effect of the silicone layer indirectly improves the overall structure's fatigue resistance. like Figure 6 and Figure 7 As shown, the connecting mechanism includes pipe flanges 44 fixed to one end of the two pipe bodies 1. Each pipe flange 44 has a sliding ring 42 slidably connected to its side wall away from the valve body 2. Each sliding ring 42 has a plurality of limiting posts 43 fixed to its side wall near the valve body 2. Each limiting post 43 penetrates the pipe flange 44. Each limiting post 43 has a limiting groove on its outer wall. Each limiting groove has two fixing sleeves 45 on its outer wall. Both ends of the two fixing sleeves 45 are fixed by fastening bolts 47. Each sliding ring 42 has a second spring 41 fixed to its side wall away from the valve body 2. Each pipe body 1 has an outer cylinder 4 fixed to its outer wall. The outer cylinder 4 is located outside the second spring 41.

[0026] The connecting mechanism provided by the present invention is used to connect the pipe body 1 and the valve body 2 together. One end of each of the two pipe bodies 1 is aligned with the two sides of the valve body 2. During the alignment process, under the action of the second spring 41, the limiting post 43 is inserted through the pipe flange 44 with its limiting groove facing outward for initial fixation, so that the pipe flange 44 fits against the valve body 2. Two fixing sleeves 45 are fitted together on the outer wall of the limiting groove, and the fixing bolts 47 are screwed into the limiting groove through the fixing sleeves 45 to realize the axial limiting of the moving ring 42.

[0027] Some valve bodies 2 have valve body flanges welded to both ends. The connection between the pipe body 1 and the valve body 2 is reinforced by the valve body flange and the pipe body flange 44. During installation, the limiting post 43 is pushed to one side of the pipe body flange 44. Then, during the alignment of the valve body flange and the pipe body flange 44, the valve body 2 needs to be slightly rotated. During the rotation, when the port on the valve body flange is aligned with the port on the pipe body flange 44, the limiting post 43 and the moving ring 42 will quickly reset under the action of the second spring 41. The limiting post 43 is inserted through the pipe body flange 44 with its limiting groove facing outward for initial fixation, so that the valve body flange and the pipe body flange 44 fit together. Two fixing sleeves 45 are fitted together on the outer wall of the limiting groove, and the fastening bolts 47 pass through the fixing sleeves 45 and are screwed into the limiting groove to realize the axial limitation of the moving ring 42.

[0028] like Figure 7 As shown, sealing rings 46 are attached to both sides of the fixing sleeve 45, and the sealing rings 46 are tightly fitted to the limiting groove.

[0029] The sealing ring 46 provided by the present invention is used to tightly connect the fixing sleeve 45 and the limiting groove during use, thereby improving the tightness between the moving ring 42 and the pipe flange 44 and preventing loosening.

[0030] like Figure 2 and Figure 8 As shown, a connecting seat 52 is fixedly connected to the bottom of the valve body 2, a base 5 is provided below the connecting seat 52, and a mounting seat 51 is fixedly connected to the top of the base 5. The connecting seat 52 is located inside the mounting seat 51. A cavity 53 is opened inside the mounting seat 51. A bidirectional lead screw 54 is rotatably connected to the inner wall of the cavity 53 through a bearing. Two L-shaped plates 56 are threadedly connected to the bidirectional lead screw 54. The L-shaped plates 56 are inserted into the connecting seat 52 through the mounting seat 51. A rotating block 57 is fixedly connected to one end of the bidirectional lead screw 54.

[0031] The connecting seat 52 and mounting seat 51 provided by the present invention are used to position the valve body 2 during use. The connecting seat 52 is placed into the cavity 53 of the mounting seat 51; then the rotating block 57 drives the bidirectional lead screw 54 to rotate, and the bidirectional lead screw 54 drives the two L-shaped plates 56 to move synchronously in opposite directions. The L-shaped plates 56 pass through the mounting seat 51 and are inserted into the connecting seat 52 to achieve the positioning of the valve body 2; then the base 5 is fixed on the pre-embedded seat to achieve the fixation of the valve body 2.

[0032] like Figure 8 As shown, two guide rods 55 are fixedly connected inside the cavity 53, and the L-shaped plates 56 are slidably connected on the guide rods 55.

[0033] When the guide rod 55 provided by the present invention is in use, the L-shaped plate 56 slides on the guide rod 55 during the movement of the L-shaped plate 56, and the guide rod 55 limits the axial movement of the L-shaped plate 56.

[0034] like Figure 2 As shown, a guide pipe 6 is fixedly connected to the inner wall of the end of the pipe body 1 near the valve body 2. The inner diameter of the guide pipe 6 near the valve body 2 is smaller than the inner diameter of the end away from the valve body 2.

[0035] The flow guide pipe 6 provided by this invention has a conical constriction structure during use, forcing the fluid to accelerate axially and reforming the originally chaotic turbulent flow into laminar flow. This gradual acceleration mode can effectively suppress vortex generation, especially when the valve is opened and closed rapidly. When the valve is closed urgently, the high-speed flowing water generates destructive water hammer waves due to inertia. The constriction design of the flow guide pipe 6 can convert some of the kinetic energy into local high-pressure potential energy, which is equivalent to setting up an elastic buffer. During flow, the flow velocity is relatively low, reducing the impact force of the water flow.

[0036] A valve installation method that allows for zoned water outage construction, such as Figure 9 As shown, it includes the following steps: S1: Pre-assembly of pipe body 1 and valve body 2: Align one end of each of the two pipe bodies 1 with the two sides of the valve body 2 respectively. During the alignment process, under the action of the second spring 41, the limiting post 43 is inserted through the pipe body flange 44 with its limiting groove facing outward for initial fixation, so that the pipe body flange 44 fits against the valve body 2. S2: Locking of fixed sleeve 45: Two fixed sleeves 45 are fitted together on the outer wall of the limiting groove, and the fastening bolts 47 pass through the fixed sleeves 45 and are screwed into the limiting groove to realize the axial limiting of the moving ring 42; S3: Sealing mechanism assembly: The two sealing covers 3 are respectively fitted onto the outside of the connection between the pipe body 1 and the valve body 2; then the I-shaped rod 36 is inserted into the two through holes 35 of the sealing cover 3 on the same side, and one end of the I-shaped rod 36 extends to the outside of the sealing cover 3; and the tapered block 37 is aligned with the end of the I-shaped rod 36 and inserted to clamp the I-shaped rod 36. S4: Positioning of valve body 2: Place the connecting seat 52 into the cavity 53 of the mounting seat 51; rotate the rotating block 57 to drive the bidirectional lead screw 54 to drive the two L-shaped plates 56 to move synchronously in opposite directions, and position the valve body 2 by inserting the L-shaped plates 56 into the connecting seat 52; then fix the base 5 on the pre-embedded seat.

[0037] Working principle: Align one end of each of the two pipe bodies 1 with the two sides of the valve body 2 respectively. During the alignment process, under the action of the second spring 41, the limiting post 43 is inserted through the pipe flange 44 with its limiting groove facing outward for initial fixation, so that the pipe flange 44 fits against the valve body 2. Two fixing sleeves 45 are fitted together on the outer wall of the limiting groove, and the fixing bolts 47 are screwed into the limiting groove through the fixing sleeves 45 to achieve axial limiting of the moving ring 42.

[0038] Two sealing covers 3 are respectively fitted onto the outside of the connecting mechanism; then, the I-shaped insert 36 is inserted into the two through holes 35 of the sealing cover 3 on the same side. During the fitting process, the other hand needs to pull the sleeve 372 away from the fixed plate 374. When one end of the I-shaped insert 36 extends to the outside of the sealing cover 3, the sleeve 372 is released. Under the action of the first spring 373, the sleeve 372 and the slide rod 371 quickly return to their original positions. The slide rod 371 drives the conical block 37 to be inserted into one end of the I-shaped insert 36, thereby achieving the positioning and clamping of the I-shaped insert 36. The sealing cover 3 seals and waterproofs the connecting mechanism, improving the service life and sealing performance of the connecting mechanism. The sealing ring 31 and the sealing strip are both used to waterproof the inside of the sealing cover 3. By setting the sealing ring 31, it is easy to tightly fit the sealing cover 3 to the outer wall of the pipe body 1. By setting the sealing strip, it is easy to tightly fit the connection between the two sealing covers 3, thereby improving the waterproof performance of the sealing cover 3. When in use, the absorbent silica gel has a strong moisture absorption capacity and can actively absorb the condensation inside the sealing cover 3 caused by temperature difference or medium evaporation, thus preventing the metal surface at the connection between the pipe body 1 and the valve body 2 from being in contact with a humid environment for a long time and thus preventing corrosion.

[0039] By placing the connecting seat 52 into the cavity 53 of the mounting seat 51, and then rotating the rotating block 57 to drive the bidirectional screw 54 to rotate, the bidirectional screw 54 drives the two L-shaped plates 56 to move synchronously in opposite directions. The L-shaped plates 56 pass through the mounting seat 51 and are inserted into the connecting seat 52 to achieve the positioning of the valve body 2. Then, the base 5 is fixed on the pre-embedded seat to achieve the fixation of the valve body 2.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve installation device for zoned water shut-off construction, comprising two pipe bodies (1); a valve body (2) is installed in the middle of the two pipe bodies (1), and a connecting mechanism is provided between the pipe bodies (1) and the valve body (2); a sealing mechanism is provided on the outer side of each connecting mechanism; characterized in that: Each sealing mechanism includes two sealing covers (3). Two through holes (35) are opened on the adjacent side walls of the two sealing covers (3). I-shaped rods (36) are inserted into the two through holes (35) on the same side. One end of the I-shaped rod (36) extends to the outside of the sealing cover (3). Two fixing plates (374) are fixedly connected to the outer wall of the sealing cover (3). Sliding rods (371) are slidably connected to the two fixing plates (374). One end of the sliding rod (371) is fixedly connected to a conical block (37). The conical block (37) is inserted into one end of the I-shaped rod (36). The other end of the sliding rod (371) is fixedly connected to a sleeve (372). A first spring (373) is sleeved on the outside of the sliding rod (371). The two ends of the first spring (373) are fixedly connected to the sleeve (372) and the fixing plate (374) respectively.

2. The valve installation device for zoned water shut-off construction according to claim 1, characterized in that: Sealing rings (31) are fixedly connected to the inner walls of both ends of the sealing cover (3). A sealing groove (32) is opened on the outer wall of one of the sealing covers (3), and a sealing strip is fixedly connected to the outer wall of the other sealing cover (3). The sealing strip is inserted into the sealing groove (32).

3. The valve installation device for zoned water shut-off construction according to claim 2, characterized in that: Both ends of the sealing cover (3) are fixed with silicone boxes (33), and silicone grooves (34) are opened on the inner sidewalls of both ends of the sealing cover (3). The silicone boxes (33) and silicone grooves (34) are filled with water-absorbing silicone.

4. The valve installation device for zoned water shut-off construction according to claim 3, characterized in that: The connecting mechanism includes a pipe flange (44) fixed to one end of the two pipe bodies (1). A movable ring (42) is slidably connected to the side wall of the pipe flange (44) away from the valve body (2). A plurality of limiting posts (43) are fixed to the side wall of the movable ring (42) near the valve body (2). The limiting posts (43) are inserted through the pipe flange (44). A limiting groove is opened on the outer wall of the limiting post (43). Two fixing sleeves (45) are provided on the outer wall of the limiting groove. Both ends of the two fixing sleeves (45) are fixed by fastening bolts (47).

5. A valve installation device for zoned water shut-off construction according to claim 4, characterized in that: The moving ring (42) is fixed with a second spring (41) on the side wall away from the valve body (2), and the outer cylinder (4) is fixed on the outer wall of the tube body (1). The outer cylinder (4) is located outside the second spring (41).

6. A valve installation device for zoned water shut-off construction according to claim 5, characterized in that: Sealing rings (46) are attached to both sides of the fixing sleeve (45), and the sealing rings (46) are tightly fitted to the limiting groove.

7. A valve installation device for zoned water shut-off construction according to claim 6, characterized in that: The bottom of the valve body (2) is fixedly connected to a connecting seat (52), and a base (5) is provided below the connecting seat (52). A mounting seat (51) is fixedly connected to the top of the base (5). The connecting seat (52) is located inside the mounting seat (51). A cavity (53) is opened inside the mounting seat (51). A bidirectional screw (54) is rotatably connected to the inner wall of the cavity (53) through a bearing. Two L-shaped plates (56) are threaded onto the bidirectional screw (54). The L-shaped plates (56) are inserted through the mounting seat (51) and onto the connecting seat (52). A rotating block (57) is fixedly connected to one end of the bidirectional screw (54).

8. A valve installation device for zoned water shut-off construction according to claim 7, characterized in that: Two guide rods (55) are fixedly connected inside the cavity (53), and the L-shaped plates (56) are slidably connected on the guide rods (55).

9. A valve installation device for zoned water shut-off construction according to claim 8, characterized in that: Each of the pipes (1) has a guide pipe (6) fixedly connected to the inner wall of the end near the valve body (2). The inner diameter of the guide pipe (6) near the valve body (2) is smaller than the inner diameter of the end away from the valve body (2).

10. A valve installation method for zoned water shut-off construction, applicable to the valve installation device for zoned water shut-off construction as described in any one of claims 1-9, characterized in that: Includes the following steps: S1: Pre-assembly of pipe body (1) and valve body (2): Align one end of each of the two pipe bodies (1) with the two sides of the valve body (2). During the alignment process, under the action of the second spring (41), the limiting post (43) is inserted through the pipe body flange (44) with its limiting groove facing outward, and is initially fixed so that the pipe body flange (44) fits against the valve body (2). S2: Locking of fixed sleeve (45): Two fixed sleeves (45) are fitted together on the outer wall of the limiting groove, and the fixed sleeves (45) are screwed into the limiting groove through the fastening bolt (47) to achieve axial limiting of the moving ring (42); S3: Sealing mechanism assembly: The two sealing covers (3) are respectively fitted onto the outside of the connection between the pipe body (1) and the valve body (2); then the I-shaped plug (36) is inserted into the two through holes (35) of the sealing cover (3) on the same side, and one end of the I-shaped plug (36) extends to the outside of the sealing cover (3); and the tapered block (37) is aligned with the end of the I-shaped plug (36) for clamping the I-shaped plug (36). S4: Positioning of valve body (2): Place the connecting seat (52) into the cavity (53) of the mounting seat (51); rotate the rotating block (57) to drive the bidirectional screw (54) to drive the two L-shaped plates (56) to move synchronously in opposite directions, and realize the positioning of valve body (2) by inserting the connecting seat (52) into the L-shaped plate (56); then fix the base (5) on the pre-embedded seat.

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