Valve with high sealing performance

Abstract

The utility model relates to the technical field of valves, in particular to a valve with high sealing performance. In order to solve the problems that a water inlet pipe and a water outlet pipe of an existing valve are poor in connection sealing performance with a pipeline and inconvenient to install, the valve comprises a valve body, the water inlet pipe and the water outlet pipe are arranged at the two ends of the valve body, and the side faces of the valve body are provided with first installation grooves and first sealing rings and are rotationally connected with hexagon nuts; the peripheries of the water inlet pipe and the water outlet pipe are provided with a second limiting check ring, a second installation groove and a second sealing ring. After the prior art is improved, the hexagonal nut is arranged to be rotatably connected with the water inlet pipe and the water outlet pipe, so that the valve can be conveniently and quickly mounted; by arranging a first sealing ring and a second sealing ring, the sealing performance of connection between the water inlet pipe and the pipeline and between the water outlet pipe and the pipeline can be improved; and the sealing performance when the valve is closed can be improved through a third sealing ring.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a valve with high sealing performance. Background Technology

[0002] In the prior art, Chinese utility model patent with publication number CN220930216U discloses a valve with good sealing performance. Although the sealing performance between the sealing body, valve cover and valve stem is improved by multiple sealing structures, the sealing performance of the hexagonal water inlet pipe and hexagonal water outlet pipe that are integrally formed at both ends of the valve body is poor because they are only connected by threads. Furthermore, the integrally formed structure is inconvenient to install with external pipe threads.

[0003] Therefore, it is necessary to improve upon the shortcomings of the existing technologies mentioned above. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a valve with high sealing performance to address the shortcomings of the prior art, thereby solving the problems of poor sealing performance and inconvenient installation of the valve inlet and outlet pipes to the pipeline.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a valve with high sealing performance, comprising a valve body, wherein an inlet pipe and an outlet pipe are respectively provided at both ends of the valve body, and a first mounting groove is provided on the side of both the inlet pipe and the outlet pipe, wherein a first sealing ring is installed in the first mounting groove, the first sealing ring being able to abut against an external pipe, and both the inlet pipe and the outlet pipe being rotatably connected to a hexagonal nut.

[0006] Using the above technical solution, the valve can be easily connected to the external pipe by rotating the hexagonal nut. The first sealing ring can abut against the external pipe during connection, which can improve the sealing performance between the inlet and outlet pipes and the external pipe.

[0007] A further provision of the above technical solution is that: a first limiting ring is provided on the side of the hexagonal nut near the valve body, and a second limiting ring is provided on the outer circumferential surface of the water inlet pipe and the water outlet pipe to cooperate with the first limiting ring.

[0008] Using the above technical solution, the first limiting retaining ring on the hexagonal nut cooperates with the second limiting retaining ring on the inlet or outlet pipe to ensure that the hexagonal nut can rotate relative to the inlet or outlet pipe, while also limiting its movement to prevent it from falling off. Furthermore, after the hexagonal nut is threadedly connected to an external pipe, a secure and tight connection can be achieved.

[0009] A further provision of the above technical solution is that a second mounting groove is provided on the side of the second limiting ring away from the hexagonal nut, and a second sealing ring is installed in the second mounting groove.

[0010] By adopting the above technical solution, the sealing performance between the inlet and outlet pipes and the hexagonal nut is further improved by the second sealing ring after the valve is installed.

[0011] A further configuration of the above technical solution is as follows: a sealing body is integrally formed on the valve body; a valve cover is fixedly connected to the upper end of the sealing body; a lead screw is rotatably connected to the valve cover; a valve stem is threadedly connected to the lower end of the lead screw; a valve plate is fixedly connected to the lower end of the valve stem, and the outer diameter of the valve plate is the same as the inner diameter of the sealing body; the valve plate is slidably connected to the inner cavity of the sealing body; the axis of the lead screw and the axis of the valve stem are set on the same axis; the inner cavity of the valve body has an inlet channel, an outlet channel, and a through hole, and the inlet channel and the outlet channel are connected through the through hole; the valve plate is located directly above the through hole, and the outer diameter of the valve plate is larger than the inner diameter of the through hole; the axis of the valve plate and the axis of the through hole are set on the same axis; a threaded hole for threaded connection of the lower end of the lead screw is opened on the upper surface of the valve stem, and two sets of guide grooves are symmetrically opened on the upper outer side of the valve stem; two sets of limiting protrusions are symmetrically arranged in the inner cavity of the valve cover, and the two sets of limiting protrusions are slidably connected to the two sets of guide grooves respectively.

[0012] By adopting the above technical solution, the valve stem and valve plate are moved up and down by the lead screw to move closer to or away from the through hole, thereby realizing the opening and closing of the valve. The cooperation between the valve plate and the sealing body and the positional relationship with the through hole ensure that the valve plate can completely block the through hole when the valve is closed.

[0013] A further provision of the above technical solution is that a third mounting groove is provided on the outer peripheral surface of the through hole facing the valve plate, and a third sealing ring is installed in the third mounting groove, and the third sealing ring can abut against the bottom surface of the valve plate when the valve is closed.

[0014] By adopting the above technical solution, the third sealing ring abuts against the bottom surface of the valve plate when the valve is closed, which further improves the sealing performance when the valve is closed.

[0015] A further provision of the above technical solution is as follows: the upper surface of the valve cover is provided with two sets of stepped sealing grooves and bearing grooves, the bearing grooves are embedded with bearing sleeves, and the two sets of stepped sealing grooves are respectively embedded with upper sealing plugs and lower sealing plugs; the lower end of the screw penetrates the valve cover and is disposed in the inner cavity of the sealing body, the upper sealing plug, bearing sleeve and lower sealing plug are all sleeved on the outside of the screw, the upper sealing plug is disposed directly above the bearing sleeve, the lower sealing plug is disposed directly below the bearing sleeve, and the inner diameter of the upper sealing plug and the inner diameter of the lower sealing plug are both smaller than the outer diameter of the screw.

[0016] By adopting the above technical solution, the setting of the upper sealing plug, bearing sleeve and lower sealing plug improves the sealing performance and rotational flexibility at the connection between the screw and the valve cover.

[0017] A further provision of the above technical solution is that: the inner cavity of the sealing body is embedded with a main sealing plug, and multiple sets of secondary sealing plugs are integrally formed on the outer side of the main sealing plug, and the multiple sets of secondary sealing plugs are arranged at equal intervals; the inner cavity of the sealing body is provided with a limiting ring groove for the multiple sets of secondary sealing plugs to be embedded.

[0018] By adopting the above technical solution, the main sealing plug is tightly fitted with the limiting ring groove of the inner cavity of the sealing body through multiple sets of secondary sealing plugs, which not only ensures the stability of the main sealing plug installation, but also greatly enhances the sealing effect at the valve stem inside the sealing body.

[0019] A further provision of the above technical solution is that the upper end of the main sealing plug abuts against the lower surface of the valve cover, and the outer diameter of the main sealing plug is larger than the inner diameter of the valve cover.

[0020] By adopting the above technical solution, the cooperation between the main sealing plug and the valve cover further ensures the sealing effect.

[0021] A further provision of the above technical solution is that a rotating wheel is connected to the upper end of the lead screw.

[0022] By adopting the above technical solution, the design of the rotary wheel is intended to facilitate the rotation of the operating screw, thereby effectively reducing the force required for operation and improving the efficiency and convenience of operation.

[0023] The beneficial effects achieved by this utility model are: by setting the hexagonal nut to be rotatably connected to the inlet and outlet pipes, the valve can be installed conveniently and quickly; by setting the first and second sealing rings, the sealing performance of the connection between the inlet and outlet pipes and the pipeline can be improved; and by setting the third sealing ring, the sealing performance when the valve is closed can be improved. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0025] Figure 2 This is an exploded structural diagram of an embodiment of the present invention;

[0026] Figure 3 This is a cross-sectional view of an embodiment of the present utility model;

[0027] Figure 4 This is a cross-sectional view of the valve body and valve cover in an embodiment of this utility model;

[0028] Figure 5 This is a schematic diagram of the valve body in an embodiment of this utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the hexagonal nut in an embodiment of this utility model.

[0030] The markings in the diagram are as follows: 1. Valve body; 11. Inlet pipe; 12. Outlet pipe; 13. First mounting groove; 14. First sealing ring; 15. Hexagonal nut; 16. First limiting retaining ring; 17. Second limiting retaining ring; 18. Second mounting groove; 19. Second sealing ring; 2. Sealing body; 21. Valve cover; 211. Limiting protrusion; 22. Screw; 23. Valve stem; 230. Guide groove; 24. Valve plate; 25. Inlet channel; 26. Outlet channel; 27. Through hole; 28. Third mounting groove; 29. ​​Third sealing ring; 3. Stepped sealing groove; 31. Bearing groove; 32. Bearing sleeve; 33. Upper sealing plug; 34. Lower sealing plug; 4. Main sealing plug; 41. Secondary sealing plug; 42. Limiting ring groove; 5. Rotary wheel. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] like Figure 1-6 As shown, a high-sealing valve includes a valve body 1. An inlet pipe 11 and an outlet pipe 12 are respectively provided at both ends of the valve body 1. A first mounting groove 13 is provided on the side of both the inlet pipe 11 and the outlet pipe 12. A first sealing ring 14 is installed in the first mounting groove 13 and can abut against an external pipe. Both the inlet pipe 11 and the outlet pipe 12 are rotatably connected to a hexagonal nut 15. A first limiting retaining ring 16 is provided on the side of the hexagonal nut 15 closest to the valve body 1. A second limiting retaining ring 17, which mates with the first limiting retaining ring 16, is provided on the outer circumference of the inlet pipe 11 and the outlet pipe 12. A second mounting groove 18 is provided on the side of the second limiting retaining ring 17 furthest from the hexagonal nut 15, and a second sealing ring 19 is installed in the second mounting groove 18.

[0033] like Figure 1-4As shown, a sealing body 2 is integrally formed on the valve body 1. A valve cover 21 is fixedly connected to the upper end of the sealing body 2. A lead screw 22 is rotatably connected to the valve cover 21. A valve stem 23 is threadedly connected to the lower end of the lead screw 22. A valve plate 24 is fixedly connected to the lower end of the valve stem 23, and the outer diameter of the valve plate 24 is the same as the inner diameter of the sealing body 2. The valve plate 24 is slidably connected to the inner cavity of the sealing body 2. The axis of the lead screw 22 and the axis of the valve stem 23 are set on the same axis. The inner cavity of the valve body 1 has an inlet channel 25, an outlet channel 26, and a through hole 27, and the inlet channel 25 and the outlet channel 26 pass through the through hole 27. The valve plate 24 is positioned directly above the through hole 27, and its outer diameter is larger than the inner diameter of the through hole 27. The axis of the valve plate 24 and the axis of the through hole 27 are aligned on the same axis. The upper surface of the valve stem 23 has a threaded hole for connecting the lower end of the lead screw 22, and two sets of guide grooves 230 are symmetrically provided on the upper outer side of the valve stem 23. Two sets of limiting protrusions 211 are symmetrically provided in the inner cavity of the valve cover 21, and the two sets of limiting protrusions 211 are slidably connected to the two sets of guide grooves 230 respectively. By inserting the limiting protrusions 211 into the guide grooves 230, the valve stem 23 can be prevented from rotating with the lead screw 22. A third mounting groove 28 is provided on the outer circumferential surface of the through hole 27 facing the valve plate 24. A third sealing ring 29 is installed in the third mounting groove 28, and the third sealing ring 29 can abut against the bottom surface of the valve plate 24 when the valve is closed.

[0034] like Figure 3 , 4 As shown, the upper surface of the valve cover 21 is provided with two sets of stepped sealing grooves 3 and bearing grooves 31. The bearing grooves 31 are embedded with bearing sleeves 32. The two sets of stepped sealing grooves 3 are respectively embedded with upper sealing plugs 33 and lower sealing plugs 34. The lower end of the screw rod 22 passes through the valve cover 21 and is located in the inner cavity of the sealing body 2. The upper sealing plug 33, bearing sleeves 32 and lower sealing plugs 34 are all sleeved on the outside of the screw rod 22. The upper sealing plug 33 is located directly above the bearing sleeve 32 and the lower sealing plug 34 is located directly below the bearing sleeve 32. The inner diameter of the upper sealing plug 33 and the inner diameter of the lower sealing plug 34 are both smaller than the outer diameter of the screw rod 22.

[0035] like Figure 3 , 4 As shown, the inner cavity of the sealing body 2 is fitted with a main sealing plug 4, and multiple sets of secondary sealing plugs 41 are integrally formed on the outer side of the main sealing plug 4. The multiple sets of secondary sealing plugs 41 are arranged at equal intervals. The inner cavity of the sealing body 2 is provided with a limiting ring groove 42 for the multiple sets of secondary sealing plugs 41 to be inserted. The upper end of the lead screw 22 is connected to a rotating wheel 5. The upper end of the main sealing plug 4 abuts against the lower surface of the valve cover 21, and the outer diameter of the main sealing plug 4 is larger than the inner diameter of the valve cover 21.

[0036] In the above embodiment, rotating the wheel 5 drives the lead screw 22 to rotate, and the lead screw 22 drives the valve stem 23 and valve plate 24 to move up and down through threaded transmission, thereby realizing the opening and closing of the valve. When installing the valve, rotating the hexagonal nut 15 can quickly connect the valve to the pipeline. The first sealing ring 14 and the second sealing ring 19 ensure the sealing of the connection. When the valve is closed, the third sealing ring 29 abuts against the bottom surface of the valve plate 24, ensuring the sealing and isolation between the water inlet channel 25 and the water outlet channel 26. Combined with other multiple sealing structures, the overall high sealing performance of the valve is guaranteed. Through the above structural design, this utility model effectively solves the problems of poor sealing performance and inconvenient installation of existing valves.

Claims

1. A high-sealing valve, comprising a valve body, wherein an inlet pipe and an outlet pipe are respectively provided at both ends of the valve body, characterized in that: Both the inlet and outlet pipes are provided with a first mounting groove on their sides. A first sealing ring is installed in the first mounting groove. The first sealing ring can abut against the external pipe. Both the inlet and outlet pipes are rotatably connected with hexagonal nuts.

2. The valve with high sealing performance according to claim 1, characterized in that: The hexagonal nut is provided with a first limiting ring on the side near the valve body, and the inlet pipe and outlet pipe are provided with a second limiting ring that cooperates with the first limiting ring on their outer circumferential surfaces.

3. The valve with high sealing performance according to claim 2, characterized in that: The second limiting retaining ring has a second mounting groove on the side away from the hexagonal nut, and a second sealing ring is installed in the second mounting groove.

4. A high-sealing valve according to any one of claims 1-3, characterized in that: The valve body has an integrally formed sealing body. A valve cover is fixedly connected to the upper end of the sealing body. A lead screw is rotatably connected to the valve cover. A valve stem is threadedly connected to the lower end of the lead screw. A valve plate is fixedly connected to the lower end of the valve stem. The outer diameter of the valve plate is the same as the inner diameter of the sealing body. The valve plate is slidably connected to the inner cavity of the sealing body. The axis of the lead screw and the axis of the valve stem are set on the same axis. The inner cavity of the valve body has an inlet channel, an outlet channel, and a through hole. The inlet channel and the outlet channel are connected through the through hole. The valve plate is set directly above the through hole. The outer diameter of the valve plate is larger than the inner diameter of the through hole. The axis of the valve plate and the axis of the through hole are set on the same axis. The upper surface of the valve stem has a threaded hole for the lower end of the lead screw to be threadedly connected. Two sets of guide grooves are symmetrically opened on the upper outer side of the valve stem. Two sets of limiting protrusions are symmetrically arranged in the inner cavity of the valve cover. The two sets of limiting protrusions are slidably connected to the two sets of guide grooves respectively.

5. A high-sealing valve according to claim 4, characterized in that: A third mounting groove is provided on the outer peripheral surface of the through hole facing the valve plate. A third sealing ring is installed in the third mounting groove. The third sealing ring can abut against the bottom surface of the valve plate when the valve is closed.

6. A high-sealing valve according to claim 5, characterized in that: The upper surface of the valve cover is provided with two sets of stepped sealing grooves and bearing grooves. The bearing grooves are fitted with bearing sleeves, and the two sets of stepped sealing grooves are fitted with upper sealing plugs and lower sealing plugs, respectively. The lower end of the screw passes through the valve cover and is located in the inner cavity of the sealing body. The upper sealing plug, bearing sleeve and lower sealing plug are all fitted on the outside of the screw. The upper sealing plug is located directly above the bearing sleeve and the lower sealing plug is located directly below the bearing sleeve. The inner diameter of the upper sealing plug and the inner diameter of the lower sealing plug are both smaller than the outer diameter of the screw.

7. A high-sealing valve according to claim 6, characterized in that: The inner cavity of the sealing body is fitted with a main sealing plug, and multiple sets of secondary sealing plugs are integrally formed on the outer side of the main sealing plug. The multiple sets of secondary sealing plugs are arranged at equal intervals. The inner cavity of the sealing body is provided with a limiting ring groove for the multiple sets of secondary sealing plugs to be embedded.

8. A high-sealing valve according to claim 7, characterized in that: The upper end of the main sealing plug abuts against the lower surface of the valve cover, and the outer diameter of the main sealing plug is larger than the inner diameter of the valve cover.

9. A high-sealing valve according to claim 8, characterized in that: A rotating wheel is connected to the upper end of the lead screw.

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