A large-flow water distributor with convenient plugging and strong sealing

Abstract

This utility model belongs to the field of water manifold technology, specifically relating to a high-flow water manifold with convenient insertion and removal and strong sealing. It includes a manifold body and a set of branch interfaces fixedly connected to the manifold body. A floor heating water pipe is connected to the branch interfaces via a quick-connect assembly. The branch interfaces have an inner cavity for inserting the water pipe, which is inserted into the inner cavity after passing through the quick-connect assembly. A limiting ring is also provided on the fixed end of the branch interfaces. The end of the floor heating water pipe abuts against the limiting ring to form an inward limiting position. The quick-connect assembly has retraction limiting teeth for the floor heating water pipe. A lift-stop valve is provided on the manifold body. The sealing plug of the lift-stop valve, through the limiting ring, engages with the floor heating water pipe to form a seal. The sealing plug, by raising and lowering the valve stem, controls the flow of the floor heating water pipe, increasing the water flow rate, improving the heat circulation speed, and enhancing the sealing performance when the floor heating water pipe is closed.

Description

Technical Field

[0001] This utility model belongs to the field of water distributor technology, specifically relating to a high-flow water distributor that is easy to plug in and out and has strong sealing properties. Background Technology

[0002] In underfloor heating systems in residential buildings, large factories, or schools, the manifold is a key component for evenly distributing hot water to the underfloor heating pipes in each room. To control the on / off state and flow rate of individual underfloor heating circuits, existing manifolds typically integrate valves directly into the branch pipe interfaces. The valve body, sealing plug, and valve itself occupy the flow channel inside the small-diameter branch pipe interface, causing significant local resistance when hot water flows through the interface. This affects the speed at which hot water flows into the underfloor heating pipes, impacting heat circulation and resulting in slower indoor temperature rise. Furthermore, underfloor heating pipes typically utilize… The quick-connect fitting connects to the main body of the manifold. During assembly, the quick-connect fitting is first threaded onto the branch pipe interface on the main body of the manifold, and then the underfloor heating water pipe is inserted into the quick-connect fitting. However, during disassembly, the underfloor heating water pipe is difficult to pull out of the quick-connect fitting quickly. It is necessary to first rotate the quick-connect fitting relative to the branch pipe interface to separate it, and then remove the underfloor heating water pipe from the quick-connect fitting. In this disassembly method, when the quick-connect fitting rotates relative to the branch pipe interface, the underfloor heating water pipe is difficult to rotate synchronously with the quick-connect fitting. Scratches are generated between the quick-connect fitting and the underfloor heating water pipe, which can easily cause wear and tear on the underfloor heating water pipe and affect its service life. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a high-flow-rate manifold that is easy to plug and unplug and has strong sealing properties. It can increase the water flow rate supplied by the manifold body to the underfloor heating pipes, improve the heat circulation speed, and also help improve the sealing of the underfloor heating pipes when closed.

[0004] The specific technical solution adopted in this utility model is as follows:

[0005] A high-flow manifold with convenient insertion and strong sealing includes a manifold body and a set of branch interfaces fixedly connected to the manifold body. Underfloor heating pipes are connected to the branch interfaces via quick-connect components. Each branch interface has an insert cavity. The underfloor heating pipe is inserted into the insert cavity after passing through the quick-connect components. A limiting ring is also provided on the fixed end of the branch interface. The end of the underfloor heating pipe abuts against the limiting ring to form an inward limiting position. The quick-connect components are provided with retraction limiting teeth for the underfloor heating pipe. A lift-stop valve is provided on the manifold body. The lift-stop valve includes a valve stem, and a sealing plug is provided at the lower end of the valve stem. The sealing plug, through the limiting ring, engages with the underfloor heating pipe to form a seal. The sealing plug, by moving the valve stem, controls the flow of the underfloor heating pipe.

[0006] The branch interface is provided with an external thread, and the quick-connect assembly includes an internal threaded sleeve and a sleeve. The internal threaded sleeve is fitted onto the mounting end of the sleeve and has the freedom to rotate around its own axis on the sleeve. The retraction limiting teeth are provided inside the sleeve. The sleeve and the inner cavity of the insertion tube are coaxially arranged. The floor heating water pipe passes through the sleeve and is inserted into the inner cavity of the insertion tube.

[0007] The retraction limiting teeth are arranged in a circular array, and the ends of the retraction limiting teeth are inclined upward.

[0008] The overhanging end of the sleeve is fitted with the pressing sleeve. The pressing sleeve has the freedom to move along its own axial direction within the sleeve. The overhanging end of the sleeve is provided with a retraction limiting boss for the pressing sleeve. The working end of the pressing sleeve abuts against the retraction limiting teeth. The pressing end of the pressing sleeve is overhanging outside the overhanging end of the sleeve. The retraction limiting boss is located between the working end and the pressing end of the pressing sleeve. The underfloor heating water pipe passes through the pressing sleeve and the sleeve in sequence.

[0009] The outer side of the pressing end of the pressing sleeve is provided with a raised edge, and the overhanging end of the sleeve cooperates with the raised edge to form the forward limiting of the pressing sleeve.

[0010] The lower end of the valve stem is provided with a metal support plate, the sealing plug is provided at the lower end of the metal support plate and is fixedly connected to the metal support plate, the connecting seat of the lifting stop valve is fixedly connected to the main body of the water distributor, a sealing corrugated sleeve is provided between the connecting seat and the metal support plate, and the sealing corrugated sleeve is fitted on the outside of the valve stem.

[0011] The beneficial effects of this utility model are:

[0012] This invention eliminates the traditional limitation on the direction of the underfloor heating water pipe on the quick-connect assembly. Instead, the limiting ring is set on the main body of the manifold, allowing the underfloor heating water pipe to be directly inserted into the main body. The sealing plug can also be directly inserted into the underfloor heating water pipe to form a seal. The sealing plug and valve stem are located inside the manifold main body with a larger inner diameter, without occupying the internal channel of the branch interface with a smaller inner diameter. This effectively increases the water flow rate supplied by the manifold main body to the underfloor heating water pipe, allowing hot water to circulate quickly within a single underfloor heating loop, thus achieving a rapid increase in indoor temperature.

[0013] The sealing plug is used to seal the underfloor heating water pipes in a plug-in manner. The sealing plug is circumferentially constrained by the inner wall of the underfloor heating water pipe, and the force is evenly distributed, resulting in a better sealing effect. Even if a small amount of scale adheres, it will be squeezed and wrapped by the elasticity of the sealing plug, without affecting the sealing effect. The sealing plug has a longer service life, and the elastic deformation of the sealing plug will also loosen the scale. The process of plugging and unplugging will also rub the scale and make it fall off, which will slow down the clogging speed of the branch interface water inlet or the water inlet of the underfloor heating pipe, and significantly reduce the number of maintenance.

[0014] The main body of the manifold is fixed with a branch interface, and the installation end of the sleeve is provided with an internal threaded sleeve that matches the branch interface. The internal threaded sleeve has the freedom to rotate around its own axis on the sleeve. When the underfloor heating water pipe needs to be disassembled, only the internal threaded sleeve needs to be rotated. The sleeve does not rotate with the internal threaded sleeve. The retraction limiting teeth on the sleeve remain relatively fixed with the underfloor heating water pipe. The retraction limiting teeth will not cause wear to the underfloor heating water pipe, effectively improving the service life of the retraction limiting teeth. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 A magnified schematic diagram of part A in the middle;

[0017] Figure 3 This is a schematic diagram of the structure of a lift stop valve;

[0018] In the attached diagram, 1 is the main body of the manifold, 101 is the branch interface, 102 is the inner cavity of the insertion pipe, 103 is the limiting shrink ring, 2 is the underfloor heating water pipe, 3 is the quick-connect assembly, 301 is the internal thread sleeve, 302 is the sleeve, 303 is the pressing sleeve, 304 is the limiting boss, 305 is the raised edge, 4 is the retraction limiting tooth, 5 is the lifting stop valve, 501 is the sealing plug, 502 is the valve stem, 503 is the metal support plate, 504 is the connecting seat, 505 is the sealing corrugated sleeve, and 506 is the knob. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0020] Specific implementation examples Figure 1As shown, this utility model relates to a high-flow manifold with convenient insertion and removal and strong sealing, including a manifold body 1 and a set of branch interfaces 101 fixedly connected to the manifold body 1. A floor heating water pipe 2 is connected to the branch interfaces 101 via a quick-connect assembly 3. The branch interfaces 101 are provided with an insertion cavity 102. The floor heating water pipe 2 is inserted into the insertion cavity 102 after passing through the quick-connect assembly 3. A limiting ring 103 is also provided on the fixed end of the branch interfaces 101. The end of the floor heating water pipe 2 abuts against the limiting ring 103 to form an inward limiting, the inward direction being the floor heating water... The direction in which pipe 2 is inserted into quick-connect assembly 3 and the inner cavity 102 of the insertion tube is the direction in which the underfloor heating water pipe 2 is pulled out from quick-connect assembly 3 and the inner cavity 102 of the insertion tube. Quick-connect assembly 3 is provided with retraction limiting teeth 4 for the underfloor heating water pipe 2. The manifold body 1 is provided with a lift-stop valve 5. The lift-stop valve 5 includes a valve stem 502. The lower end of the valve stem 502 is provided with a sealing plug 501. The sealing plug 501 is connected to the underfloor heating water pipe 2 through the limiting shrink ring 103 to form a seal. The sealing plug 501 forms the opening and closing of the underfloor heating water pipe 2 by means of the lifting and lowering of the valve stem 502. The limiting shrink ring 103 is fixedly connected to the manifold body 1, and the inner diameter of the limiting shrink ring 103 is smaller than the diameter of the inner cavity 102 of the insertion tube and larger than or equal to the inner diameter of the underfloor heating water pipe 2.

[0021] During installation, the quick-connect assembly 3 is first connected to the main body 1 of the manifold, and then the underfloor heating water pipe 2 is inserted into the quick-connect assembly 3. After passing through the quick-connect assembly 3, the underfloor heating water pipe 2 continues to be inserted into the inner cavity 102 of the insertion branch interface 101 until the underfloor heating water pipe 2 abuts against the limiting shrink ring 103. The limiting shrink ring 103 forms an inward limit for the underfloor heating water pipe 2. The underfloor heating water pipe 2 is inserted into place, and the retraction limiting teeth 4 form a retraction limit for the underfloor heating water pipe 2, preventing the underfloor heating water pipe 2 from falling off the quick-connect assembly 3.

[0022] When it is necessary to shut off the underfloor heating water pipe 2, the sealing plug 501 of the lifting stop valve 5 moves toward the underfloor heating water pipe 2 under the drive of the valve stem 502, and the sealing plug 501 is inserted into the underfloor heating water pipe 2 to shut off the underfloor heating water pipe 2.

[0023] Preferably, the diameter of the cavity on the quick-connect assembly 3 located above the retraction limiting tooth 4 is the same as the diameter of the inner cavity 102 of the insertion tube, and both are the same as the outer diameter of the floor heating water pipe 2.

[0024] This invention eliminates the traditional limitation on the direction of the underfloor heating water pipe 2 on the quick-connect assembly 3. Instead, the direction limitation is set on the manifold body 1, allowing the underfloor heating water pipe 2 to be directly inserted into the manifold body 1. The sealing plug 501 is then directly inserted into the underfloor heating water pipe 2 to block it, thus closing the underfloor heating water pipe 2. Compared with the traditional installation of a valve on the quick-connect assembly 3, when the underfloor heating water pipe 2 is fully open, the sealing plug 501 and valve stem 502 are located in the manifold body 1 with a larger inner diameter, without occupying the internal space of the branch pipe interface 101 with a smaller inner diameter. This increases the water flow rate supplied from the manifold body 1 to the underfloor heating water pipe 2, allowing hot water to circulate quickly within a single underfloor heating loop, thereby achieving a rapid increase in indoor temperature.

[0025] The existing lift valve closes by pressing the valve core against the inlet face of the branch interface 101. The valve core is a flat washer, making it prone to scale buildup on the valve core, the inlet face of the branch interface 101, and its inner wall. This directly leads to poor contact between the valve core and the inlet face of the branch interface 101, resulting in sealing failure. It also causes uneven stress on the valve core, accelerating wear. Furthermore, scale buildup on the inner wall of the branch interface 101's inlet makes it difficult to clean promptly. Over time, the branch interface 101 becomes clogged, affecting hot water circulation. Therefore, frequent valve core replacement and cleaning of the branch interface 101's inner cavity are necessary. Figure 1 As shown, this application uses a sealing plug 501 to seal the underfloor heating water pipe 2. The sealing plug 501 is circumferentially constrained by the inner wall of the underfloor heating water pipe 2, and the force is even, resulting in a better sealing effect. Even if a small amount of scale adheres, it will be squeezed and wrapped by the elasticity of the sealing plug 501, without affecting the sealing effect. The sealing plug 501 has a longer service life, and the elastic deformation of the sealing plug 501 will also loosen the scale. The process of inserting and connecting the plugs will also rub the scale to make it fall off, thus slowing down the blockage speed of the water inlet end of the branch interface 101 or the water inlet end of the underfloor heating water pipe 2, and significantly reducing the number of maintenance times.

[0026] like Figure 2 As shown, the branch interface 101 is provided with an external thread. The quick-connect assembly 3 includes an internal threaded sleeve 301 and a sleeve 302. The internal threaded sleeve 301 is fitted onto the mounting end of the sleeve 302 and has the freedom to rotate around its own axis on the sleeve 302. The retraction limiting teeth 4 are provided inside the sleeve 302. The sleeve 302 is coaxially arranged with the inner cavity 102 of the insertion tube. The underfloor heating water pipe 2 passes through the sleeve 302 and is inserted into the inner cavity 102 of the insertion tube. When the quick-connect assembly 3 needs to be disassembled, the sleeve 302 does not rotate with the internal threaded sleeve 301. The retraction limiting teeth 4 on the sleeve 302 remain relatively fixed with the underfloor heating water pipe 2, effectively reducing the cutting wear caused by the retraction limiting teeth 4 on the underfloor heating water pipe 2, thereby ensuring that the surface of the underfloor heating water pipe 2 remains intact, smooth and free of circumferential scratches, effectively improving the service life of the underfloor heating water pipe 2.

[0027] The upper end of the sleeve 302 is provided with a limiting platform, and the lower end of the branch interface 101 is provided with a positioning groove. The limiting platform on the sleeve 302 extends into the positioning groove and abuts against the branch interface 101. The lower end of the internal threaded sleeve 301 is provided with a limiting ring. The internal threaded sleeve 301 is screwed with the external thread of the branch interface 101. The internal threaded sleeve 301 presses the sleeve 302 onto the branch interface 101 with the help of the limiting ring and the limiting platform, thereby fixing the relative positions of the branch interface 101, the internal threaded sleeve 301, and the sleeve 302. A sealing gasket is also provided inside the internal threaded sleeve 301 between the limiting platform and the limiting ring. When the internal threaded sleeve 301 is connected to the branch interface 101, the limiting ring on the internal threaded sleeve 301 and the limiting platform on the sleeve 302 clamp the sealing gasket, improving the sealing performance and uniform force distribution between the internal threaded sleeve 301 and the sleeve 302.

[0028] The sleeve 302 has a first sealing ring located above the retraction limiting tooth 4, and the branch interface 101 has a second sealing ring. The inner walls of the first and second sealing rings are respectively wrapped around the side wall of the underfloor heating water pipe 2, which further improves the sealing performance of the manifold and prevents hot water leakage.

[0029] The retraction limiting teeth 4 are arranged in a ring array. The ends of the retraction limiting teeth 4 are inclined upward. The ends of the retraction limiting teeth 4 abut against the side wall of the underfloor heating water pipe 2 to prevent the underfloor heating water pipe 2 from exiting the sleeve 302. When the underfloor heating water pipe 2 is inserted into the sleeve 302, the underfloor heating water pipe 2 pushes the retraction limiting teeth 4 to produce forward deformation, and can be quickly inserted without additional tools. The retraction limiting teeth 4 are rigidly abut against the side wall of the underfloor heating water pipe 2, firmly locking the underfloor heating water pipe 2, effectively preventing the underfloor heating water pipe 2 from loosening and falling off due to water pressure impact during the operation of the underfloor heating.

[0030] The overhanging end of the sleeve 302 is fitted with the pressing sleeve 303. The pressing sleeve 303 has the freedom to move along its own axial direction within the sleeve 302. The overhanging end of the sleeve 302 is provided with a retraction limiting boss 304 for the pressing sleeve 303. The working end of the pressing sleeve 303 abuts against the retraction limiting teeth 4. The pressing end of the pressing sleeve 303 is overhanging outside the overhanging end of the sleeve 302. The retraction limiting boss 304 is located between the working end and the pressing end of the pressing sleeve 303 to prevent the pressing sleeve 303 from falling off the sleeve 302. The underfloor heating water pipe 2 passes through the pressing sleeve 303 and... Insert the sleeve 302 into the sleeve, and press the pressing end of the pressing sleeve 303 to move the pressing sleeve 303 along its own axis toward the direction of the manifold body 1. The working end of the pressing sleeve 303 pushes the retraction limiting tooth 4 to continue to deform in the forward direction, so that the retraction limiting tooth 4 separates from the underfloor heating water pipe 2, and the underfloor heating water pipe 2 can be removed from the sleeve 302. After releasing the pressing sleeve 303, the retraction limiting tooth 4 rebounds and pushes the pressing sleeve 303 to reset and contact the retraction limiting boss 304. The pressing sleeve 303 will no longer continue to retract, preventing the pressing sleeve 303 from falling off the sleeve 302.

[0031] When removing the underfloor heating water pipe 2, sufficient operating space is required and a large force must be applied to the pressing sleeve 303. Usually, the quick-connect component 3 is removed from the manifold body 1 beforehand. After removal, the quick-connect component 3 is not restricted by adjacent quick-connect components 3 and walls, and the operating space is larger, making it easier to apply force to the pressing sleeve 303 without generating a pushing force on the manifold body 1. The underfloor heating water pipe 2 can be quickly removed by holding the quick-connect component 3 and pressing the pressing sleeve 303.

[0032] A raised edge 305 is provided on the outer side of the pressing end of the pressing sleeve 303. The overhanging end of the sleeve 302 cooperates with the raised edge 305 to form the advancing limit of the pressing sleeve 303, preventing the pressing sleeve 303 from being excessively pushed forward and causing deformation of the retraction limit tooth 4, thus affecting the locking effect of the retraction limit tooth 4. Furthermore, the sleeve 302 is also provided with an overlapping surface located above the retraction limit tooth 4. The retraction limit tooth 4, pushed by the pressing sleeve 303, fits against the overlapping surface. The overlapping surface directly receives the upward thrust transmitted by the pressing sleeve 303 to the retraction limit tooth 4, reducing the stress concentration at the root of the retraction limit tooth 4 and reducing the risk of breakage of the retraction limit tooth 4 due to repeated upward folding.

[0033] like Figure 3As shown, a metal support plate 503 is provided at the lower end of the valve stem 502. A sealing plug 501 is provided at the lower end of the metal support plate 503 and is fixedly connected to the metal support plate 503. The connecting seat 504 of the lifting stop valve 5 is fixedly connected to the main body 1 of the water distributor. A sealing corrugated sleeve 505 is provided between the connecting seat 504 and the metal support plate 503. The two ends of the sealing corrugated sleeve 505 are fixedly connected to the connecting seat 504 and the metal support plate 503 respectively. The sealing corrugated sleeve 505 is fitted on the outside of the valve stem 502. The sealing corrugated sleeve 505 can reduce the contact area between the valve stem 502 and the hot water, extend the service life of the valve stem 502, and also prevent the hot water from being discharged upward along the valve stem 502 to the outside of the main body 1 of the water distributor. In this embodiment, a sealing plug 501 is added to the lower end of the metal support plate 503 of the lifting stop valve to cooperate with the floor heating water pipe 2. The body of the sealing plug 501 is cylindrical, and the lower end of the sealing plug 501 is conical. The conical lower end facilitates the smooth insertion of the sealing plug 501 into the floor heating water pipe 2. By utilizing the conical structure that is smaller at the bottom and larger at the top, and the length of the conical lower end of the sealing plug 501 inserted into the floor heating water pipe 2, the flow rate of the floor heating water pipe 2 can be adjusted.

[0034] Specifically, the connecting seat 504 includes a fixed sleeve and a rotating sleeve. The upper end of the sealing corrugated sleeve 505 is connected to the fixed sleeve. The fixed sleeve is fixedly connected to the main body 1 of the water distributor. The rotating sleeve is coaxially fitted with the fixed sleeve and fitted inside the cavity of the fixed sleeve. The rotating sleeve is fixedly connected to the knob 506. The upper end of the valve stem 502 is provided with an external thread, and the cavity of the rotating sleeve is provided with an internal thread. The valve stem 502 is threadedly connected to the rotating sleeve. The lower end of the fixed sleeve is also provided with a guide hole for the valve stem 502. When the knob 506 is manually rotated, the knob 506 drives the rotating sleeve to rotate. Under the guidance of the guide hole, the valve stem 502 does not rotate with the rotating sleeve but rises and falls vertically.

[0035] A sealing ring is preferably provided on the metal support plate 503. When the underfloor heating water pipe 2 is closed, the sealing ring abuts against the upper surface of the limiting shrink ring 103. The sealing ring and the sealing plug 501 cooperate to further improve the sealing performance of the underfloor heating water pipe 2 and regulate the flow rate of hot water entering the underfloor heating water pipe 2. The failure of the sealing ring does not affect the sealing effect of the sealing plug 501.

Claims

1. A high-flow-rate manifold with convenient plug-in and strong sealing, comprising a manifold body (1) and a set of branch interfaces (101) fixedly connected to the manifold body (1), wherein the underfloor heating water pipe (2) is connected to the branch interfaces (101) by means of a quick-connect assembly (3), characterized in that: The branch interface (101) is provided with a tube cavity (102). The floor heating water pipe (2) is inserted into the tube cavity (102) after passing through the quick connector (3). The fixed end of the branch interface (101) is also provided with a limiting ring (103). The end of the floor heating water pipe (2) abuts against the limiting ring (103) to form an advancing limit. The quick connector (3) is provided with a retraction limiting tooth (4) for the floor heating water pipe (2). The main body (1) of the water distributor is provided with a lifting stop valve (5). The lifting stop valve (5) includes a valve stem (502). The lower end of the valve stem (502) is provided with a sealing plug (501). The sealing plug (501) is inserted and cooperates with the floor heating water pipe (2) through the limiting ring (103) to form a seal. The sealing plug (501) forms the opening and closing of the floor heating water pipe (2) by means of the lifting of the valve stem (502).

2. The large flow capacity water distributor according to claim 1, wherein: The branch interface (101) is provided with an external thread. The quick-connect assembly (3) includes an internal thread sleeve (301) and a sleeve (302). The internal thread sleeve (301) is fitted onto the mounting end of the sleeve (302) and has the freedom to rotate around its own axis on the sleeve (302). The retraction limiting tooth (4) is provided inside the sleeve (302). The sleeve (302) is coaxially arranged with the inner cavity of the insertion tube (102). The floor heating water pipe (2) passes through the sleeve (302) and is inserted into the inner cavity of the insertion tube (102).

3. The large flow capacity water distributor according to claim 2, wherein: The retracting limiting teeth (4) are arranged in a ring array, and the ends of the retracting limiting teeth (4) are inclined upward.

4. The large flow capacity water distributor according to claim 3, wherein: The overhanging end of the sleeve (302) is fitted with the pressing sleeve (303). The pressing sleeve (303) has the freedom to move along its own axis in the sleeve (302). The overhanging end of the sleeve (302) is provided with a retraction limiting boss (304) of the pressing sleeve (303). The working end of the pressing sleeve (303) abuts against the retraction limiting tooth (4). The pressing end of the pressing sleeve (303) is overhanging outside the overhanging end of the sleeve (302). The retraction limiting boss (304) is provided between the working end and the pressing end of the pressing sleeve (303). The floor heating water pipe (2) passes through the pressing sleeve (303) and the sleeve (302) in sequence.

5. The large flow capacity quick disconnect water separator of claim 4, wherein: The outer side of the pressing end of the pressing sleeve (303) is provided with a raised edge (305), and the overhanging end of the sleeve (302) cooperates with the raised edge (305) to form the advancing limit of the pressing sleeve (303).

6. The large flow capacity quick disconnect water separator of claim 1, wherein: The lower end of the valve stem (502) is provided with a metal support plate (503), the sealing plug (501) is provided at the lower end of the metal support plate (503) and is fixedly connected to the metal support plate (503), the connecting seat (504) of the lifting stop valve (5) is fixedly connected to the water distributor body (1), a sealing corrugated sleeve (505) is provided between the connecting seat (504) and the metal support plate (503), and the sealing corrugated sleeve (505) is fitted on the outside of the valve stem (502).

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