Disassembly-free cone valve seat structure

Abstract

The utility model provides a disassembly-free cone valve seat structure, which belongs to the technical field of three-way valve body sealing, and comprises a valve body, a valve core is arranged in the valve body, the top end of the valve core is connected with a handle through a valve rod, the valve body comprises an upper valve body and a lower valve body, and the upper valve body and the lower valve body are connected with each other. The upper valve body and the lower valve body are fixedly connected through a flange structure, a cone valve seat is arranged between the upper valve body and the lower valve body, a rotating table on the valve rod makes contact with the surface of the cone valve seat, the cone valve seat is fixedly installed on the lower valve body through a locking mechanism, and the handle is connected with the upper valve body through a valve deck. The handle is rotationally connected with the valve cover, and the bottom end of the valve cover is fixedly connected with the inner wall of the top end of the upper valve body through a boss on the periphery in a threaded mode; according to the utility model, the problems of large maintenance workload and low efficiency can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of three-way valve body sealing, and in particular relates to a disassembly-free cone valve seat structure. Background Art

[0002] With the continuous advancement of industrialization and urbanization, the requirements for valves and related equipment are also increasing. As an important device for fluid control, valves play a vital role in all walks of life, involving many fields such as petroleum, chemical industry, metallurgy, energy, water conservancy, etc. However, in practical applications, due to the limitations of its casting process, gaps are prone to occur at the position where the valve body and the pipeline equipment are in seal contact, causing leakage problems. Therefore, sealing components are usually used to strengthen the sealing effect of the connection. Sealing components are generally wearing parts. If the sealing components are not replaced and maintained in time during long-term use, the sealing performance of the connection will be poor, causing leakage.

[0003] In the prior art, in order to avoid leakage accidents, maintenance personnel will regularly replace these easily worn and aged sealing components to ensure the normal use of the valve body. During the maintenance process, it is often necessary to separate the upper valve body and the lower valve body, that is, it is necessary to remove a large number of screws on the flange, resulting in a large maintenance workload and low efficiency. Utility Model Content

[0004] In view of this, the utility model provides a disassembly-free cone valve seat structure, which can solve the problems of heavy maintenance workload and low efficiency.

[0005] The utility model is achieved in this way:

[0006] The utility model provides a disassembly-free cone valve seat structure, comprising a valve body, a valve core is arranged inside the valve body, the top end of the valve core is connected to a handle via a valve stem, wherein the valve body comprises an upper valve body and a lower valve body, the upper valve body and the lower valve body are fixedly connected via a flange structure, a cone valve seat is arranged between the upper valve body and the lower valve body, a rotating table on the valve stem contacts the surface of the cone valve seat, and the cone valve seat is fixedly mounted on the lower valve body via a locking mechanism, and the handle is connected to the upper valve body via a valve cover.

[0007] The technical effects of the disassembly-free cone valve seat structure provided by the utility model are as follows: by setting a valve body, a handle is used to control the rotation of the valve stem and the valve core connected thereto to achieve flow control; by setting a valve stem to connect the handle and the valve core, and by setting a cone valve seat between the upper valve body and the lower valve body, the cone valve seat is made to contact the rotating table on the valve stem, so that the handle can drive the valve core to perform more stable rotation adjustment, and by setting a locking mechanism for convenient disassembly and regular replacement of the cone valve seat to prevent wear and leakage, at the same time, the cone valve seat can be replaced without disassembling the upper valve body and the lower valve body, thereby improving the efficiency of replacement and maintenance.

[0008] On the basis of the above technical solution, the non-disassembly cone valve seat structure of the utility model can also be improved as follows:

[0009] Wherein, the handle is rotatably connected to the valve cover, and the bottom end of the valve cover is fixedly connected to the top inner wall of the upper valve body through a peripheral boss through threads.

[0010] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by providing the valve cover, the rotation adjustment of the handle is realized, and at the same time, it is fixedly connected with the upper valve body through the threaded structure, which also facilitates disassembly and installation.

[0011] Furthermore, the locking mechanism includes a lifting buckle and a fixing bolt, and a through hole is provided on the cone valve seat, and the size of the through hole is adapted to the lifting buckle.

[0012] The beneficial effect of adopting the above-mentioned improvement scheme is: by setting a lifting buckle and a fixing bolt, the cone valve seat is fixedly installed with the lower valve body, so that the cone valve seat is in contact with the surface of the rotating table to achieve a sealing effect, and at the same time it is convenient to disassemble and replace the cone valve seat.

[0013] Furthermore, a concave thread groove is provided at the bottom end of the lifting buckle, and the thread groove is used to cooperate with the fixing bolt to fix the cone valve seat.

[0014] Furthermore, a through hole is provided on the lower valve body at a position corresponding to the fixing bolt, and the through hole is used for fitting the fixing bolt to fix the cone valve seat.

[0015] Furthermore, a lifting ring is provided at the top of the lifting buckle.

[0016] The beneficial effects of adopting the above-mentioned improvement scheme are: by providing a lifting ring, it is convenient to remove the lifting buckle after disassembly, and it is convenient to fix the position of the lifting buckle when installing the cone valve seat.

[0017] Furthermore, two groups of sealing grooves are provided at the contact position between the upper surface of the lower valve body and the cone valve seat, and sealing rings are provided inside the sealing grooves.

[0018] The beneficial effect of adopting the above-mentioned improvement scheme is that the sealing performance is enhanced by providing the sealing groove and the sealing ring.

[0019] Furthermore, the outer side of the rotating platform is a concave platform that narrows from wide to narrow diagonally downward, and the side of the cone valve seat that contacts the rotating platform is an inclined surface that fits the shape of the concave platform.

[0020] The beneficial effect of adopting the above-mentioned improvement scheme is that by providing the inclined concave platform and the contact surface, the concave platform can better fit the contact surface of the cone valve seat more closely, and the sealing effect is better.

[0021] Furthermore, a groove is provided at a position where the bottom end of the upper valve body contacts the lower valve body, and a boss is provided at a position of the top end of the lower valve body corresponding to the groove.

[0022] Furthermore, a group of sealing grooves are also formed on the boss, and sealing gaskets are arranged in the sealing grooves.

[0023] Compared with the prior art, the utility model provides a disassembly-free cone valve seat structure with the following beneficial effects: by setting a valve body, the control handle is used to control the rotation of the valve stem and the valve core connected thereto to achieve flow control; by setting a valve stem to connect the handle and the valve core, and by setting a cone valve seat between the upper valve body and the lower valve body, the cone valve seat is made to contact the rotating table on the valve stem, so that the handle can drive the valve core to perform more stable rotation adjustment; by setting a locking mechanism to facilitate disassembly and regular replacement of the cone valve seat to prevent wear and leakage, and at the same time, the cone valve seat can be replaced without disassembling the upper valve body and the lower valve body, thereby improving the efficiency of replacement and maintenance; by setting a valve cover, the rotation adjustment of the handle is achieved, and at the same time, it is fixedly connected to the upper valve body through a threaded structure, which also facilitates disassembly and installation; by setting a lifting buckle and a fixing bolt to fix the cone valve seat and the lower valve body, the cone valve seat is made to contact and fit with the surface of the rotating table to achieve a sealing effect, and at the same time, it is convenient to disassemble and replace the cone valve seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a schematic diagram of a disassembly-free cone valve seat structure;

[0026] Figure 2 for Figure 1 A magnified schematic diagram of part A;

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 10. Valve body; 11. Valve core; 12. Valve stem; 13. Handle; 14. Upper valve body; 15. Lower valve body; 16. Conical valve seat; 17. Rotating table; 18. Valve cover; 19. Lifting buckle; 20. Fixing bolt; 21. Lifting ring; 22. Sealing groove; 23. Sealing ring; 24. Concave platform; 25. Boss platform. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the implementation mode of the present invention clearer, the technical solution in the implementation mode of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the implementation mode of the present invention.

[0030] like Figure 1 , as shown in FIG. 2 , is an embodiment of a disassembly-free cone valve seat structure provided by the utility model. In this embodiment, it includes a valve body 10, a valve core 11 is arranged inside the valve body 10, and the top of the valve core 11 is connected to a handle 13 through a valve stem 12, wherein the valve body 10 includes an upper valve body 14 and a lower valve body 15, the upper valve body 14 and the lower valve body 15 are fixedly connected by a flange structure, a cone valve seat 16 is arranged between the upper valve body 14 and the lower valve body 15, a rotating table 17 on the valve stem 12 is in contact with the surface of the cone valve seat 16, and the cone valve seat 16 is fixedly mounted on the lower valve body 15 through a locking mechanism, and the handle 13 is connected to the upper valve body 14 through a valve cover 18.

[0031] Among them, a conical valve seat 16 is provided to prevent the rotating platform 17 of the valve stem 12 from directly contacting the inner wall of the connection between the upper valve body 14 and the lower valve body 15, thereby avoiding wear of the inner wall and the rotating platform 17, and effectively avoiding leakage at the connection of the valve body 10, thereby enhancing the stability of the valve body 10. At the same time, the service life of the valve body 10 can be extended by the detachable and replaceable conical valve seat 16.

[0032] When in use, shut down the system associated with the valve body 10 to ensure smooth maintenance. First, remove the handle 13 together with the valve stem 12 and the valve core 11 at the bottom by rotating the valve cover 18. Then, fix the lifting buckle 19 in position through the lifting ring 21 and remove the fixing bolt 20. Replace and reinstall the cone valve seat 16. This completes the replacement and maintenance of the cone valve seat 16, saving a lot of maintenance operation time.

[0033] Among them, in the above technical solution, the handle 13 is rotatably connected to the valve cover 18, and the bottom end of the valve cover 18 is fixedly connected to the top inner wall of the upper valve body 14 through the outer boss by means of threads.

[0034] Furthermore, in the above technical solution, the locking mechanism includes a lifting buckle 19 and a fixing bolt 20 , and a through hole is provided on the cone valve seat 16 , and the size of the through hole is adapted to the lifting buckle 19 .

[0035] Furthermore, in the above technical solution, a concave thread groove is provided at the bottom end of the lifting buckle 19 , and the thread groove is used to cooperate with the fixing bolt 20 to fix and install the cone valve seat 16 .

[0036] Furthermore, in the above technical solution, a through hole is provided on the lower valve body 15 at a position corresponding to the fixing bolt 20 , and the through hole is used to fit the fixing bolt 20 to fix the cone valve seat 16 .

[0037] Among them, the bottom of the lower valve body 15 is a three-way structure, the valve core 11 is a spherical valve, and an L-shaped channel is opened inside to control the water flow in the bottom channel to be diverted to any channel on both sides; the valve core 11 is in the valve cavity position of the lower valve body 15. When the water flows in through the bottom channel, the flow direction or cut-off of the water flow can be adjusted through the internal channel of the valve core 11. In the cut-off state, the water flow will flow into the valve cavity and be sealed inside.

[0038] Furthermore, in the above technical solution, a lifting ring 21 is provided at the top of the lifting buckle 19 .

[0039] Furthermore, in the above technical solution, two sets of sealing grooves 22 are provided at the contact position between the upper surface of the lower valve body 15 and the cone valve seat 16 , and sealing rings 23 are provided inside the sealing grooves 22 .

[0040] Furthermore, in the above technical solution, the outer side of the rotating platform 17 is a concave platform 24 that narrows from wide to narrow downward, and the side of the cone valve seat 16 that contacts the rotating platform 17 is an inclined surface that fits the shape of the concave platform 24 .

[0041] Furthermore, in the above technical solution, a groove is provided at the contact position between the bottom end of the upper valve body 14 and the lower valve body 15 , and a boss 25 is provided at the top end of the lower valve body 15 corresponding to the groove position.

[0042] Furthermore, in the above technical solution, a group of sealing grooves 22 are also formed on the boss 25 , and sealing gaskets are arranged in the sealing grooves 22 .

[0043] Specifically, the principle of the utility model is: when in use, shut down the system associated with the valve body 10 to ensure smooth maintenance. First, remove the handle 13 together with the valve stem 12 and the valve core 11 at the bottom by rotating the valve cover 18, and then fix the lifting buckle 19 in position through the lifting ring 21 to remove the fixing bolt 20, and replace and reinstall the cone valve seat 16, thus completing the replacement and maintenance of the cone valve seat 16, saving a lot of maintenance operation time.

Claims

1. A non-disassembly cone valve seat structure, comprising a valve body (10), wherein a valve core (11) is arranged inside the valve body (10), and the top end of the valve core (11) is connected to a handle (13) through a valve stem (12), characterized in that: The valve body (10) comprises an upper valve body (14) and a lower valve body (15); the upper valve body (14) and the lower valve body (15) are fixedly connected via a flange structure; a conical valve seat (16) is arranged between the upper valve body (14) and the lower valve body (15); a rotating platform (17) on the valve stem (12) contacts the surface of the conical valve seat (16), and the conical valve seat (16) is fixedly mounted on the lower valve body (15) via a locking mechanism; and the handle (13) is connected to the upper valve body (14) via a valve cover (18).

2. The non-disassembly cone valve seat structure according to claim 1, characterized in that: The handle (13) is rotatably connected to the valve cover (18), and the bottom end of the valve cover (18) is fixedly connected to the top inner wall of the upper valve body (14) through a peripheral boss through threads.

3. The non-disassembly cone valve seat structure according to claim 2, characterized in that: The locking mechanism comprises a lifting buckle (19) and a fixing bolt (20); a through hole is provided on the cone valve seat (16); the size of the through hole is adapted to the lifting buckle (19).

4. The non-disassembly cone valve seat structure according to claim 3, characterized in that: The bottom end of the lifting buckle (19) is provided with an inwardly concave thread groove, and the thread groove is used to cooperate with the fixing bolt (20) to fix and install the cone valve seat (16).

5. The non-disassembly cone valve seat structure according to claim 4, characterized in that: A through hole is provided on the lower valve body (15) at a position corresponding to the fixing bolt (20), and the through hole is used to fit the fixing bolt (20) to fix the cone valve seat (16).

6. The non-disassembly cone valve seat structure according to claim 5, characterized in that: A lifting ring (21) is provided at the top end of the lifting buckle (19).

7. The non-disassembly cone valve seat structure according to claim 6, characterized in that: Two groups of sealing grooves (22) are provided at the contact position between the upper surface of the lower valve body (15) and the cone valve seat (16), and sealing rings (23) are provided inside the sealing grooves (22).

8. The non-disassembly cone valve seat structure according to claim 7, characterized in that: The outer side of the rotating platform (17) is a concave platform (24) which narrows downward from wide, and the side of the cone valve seat (16) in contact with the rotating platform (17) is an inclined surface that fits the shape of the concave platform (24).

9. The non-disassembly cone valve seat structure according to claim 8, characterized in that: A groove is provided at the bottom end of the upper valve body (14) at the contact position with the lower valve body (15), and a boss (25) is provided at the top end of the lower valve body (15) at a position corresponding to the groove.

10. The non-disassembly cone valve seat structure according to claim 9, characterized in that: The boss (25) is also provided with a group of sealing grooves (22), and sealing gaskets are arranged in the sealing grooves (22).

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