Detachable stand column corrugated pipe gate valve

Abstract

The detachable stand column corrugated pipe gate valve comprises a valve body, a gate plate is arranged at the position, close to the right side, of the edge of the outer side of the valve body, a valve rod is arranged at the top of the gate plate, a winding gasket is arranged at the top of the valve rod, two valve covers are arranged at the top of the valve body, and a plurality of first threaded holes are formed in inner cavities of the two valve covers. Inner cavities of every two adjacent first threaded holes are jointly in threaded connection with a stud, first hexagon nuts are in threaded connection with the positions, close to the top, of the edge of the outer side of each stud, a corrugated pipe is arranged at the top of the valve body, and the valve deck is connected with the valve nut seat through a stand column. The corrugated pipe is directly welded to the bottom of the stuffing box, and the lower portion of the valve rod is welded to the corrugated pipe, so that metal barrier sealing is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valves, in particular to a detachable column bellows gate valve. Background Art

[0002] The opening and closing member of a bellows gate valve is a plug-shaped valve flap, the sealing surface is a plane or a conical surface, and the valve flap moves linearly along the center line of the fluid. The movement form of the valve stem has a rising stem type and a rising and rotating stem type. The bellows globe valve is only suitable for fully open and fully closed states and does not allow adjustment and throttling.

[0003] However, there are some problems in the use of the existing bellows gate valves. The existing bellows gate valves are often integrally arranged in use, which is not convenient for disassembling and maintaining the gate valve. At the same time, the sealing effect of the gate valve is not good, reducing the working efficiency of the device. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a detachable column bellows gate valve to solve the problems mentioned in the above background art.

[0005] The technical solution of the utility model is a detachable column bellows gate valve, which includes a valve body. A gate plate is provided at the outer edge of the valve body near the right side. A valve stem is provided at the top of the gate plate. A winding gasket is provided at the top of the valve stem. Two valve covers are provided at the top of the valve body. A plurality of first threaded holes are opened in the inner cavities of the two valve covers. A stud is commonly threadedly connected in the inner cavities of two adjacent first threaded holes. First hex nuts are threadedly connected to the outer edges of the studs near the top. A bellows is provided at the top of the valve body.

[0006] In one embodiment, a gasket is provided at the top of the bellows. A screw is provided at the top of the gasket. A stuffing box is provided at the top of the screw. Packing is provided at the top of the stuffing box.

[0007] In one embodiment, a packing gland is provided at the top of the packing. A bolt is provided in the inner cavity of the packing gland. A third hex nut is threadedly connected to the outer edge of the bolt near the top. A valve nut seat is provided at the top of the bellows. A plurality of columns penetrate through the inner cavity of the valve nut seat. Second hex nuts are threadedly connected to the outer edges of the columns near the top and bottom.

[0008] In one embodiment, a valve stem nut is provided at the top of the valve nut seat. A bearing cover is provided on the outer edge of the valve stem nut.

[0009] In one embodiment, a handwheel is provided at the top of the bearing cover. An anti-rotation slider is provided at the bottom of the bearing cover.

[0010] The beneficial effects provided by the utility model are as follows:

[0011] 1. The valve cover and the valve nut seat are connected by columns, with a simple structure, being detachable and easy to maintain.

[0012] 2. Anti-rotation sliders are specially provided to prevent the valve stem from rotating and spraining the bellows.

[0013] 3. The bellows is directly welded to the bottom of the stuffing box, and the lower part of the valve stem is welded to the bellows, which is a metal barrier seal.

[0014] 4. The packing is placed in the stuffing box hole, and together with the packing gland, packing seal is achieved, and the effect of multiple seals of the bellows and the packing can be realized.

[0015] 5. The detachable stuffing box allows the valve stem and the bellows to be disassembled and assembled as a whole, simplifying the installation process. Description of the Drawings

[0016] Figure 1 This is the front view of the present utility model.

[0017] In the drawings, 1. valve body; 2. gate; 3. valve stem; 4. spiral wound gasket; 5. valve cover; 6. stud; 7. first hexagon nut; 8. bellows; 9. second hexagon nut; 10. column; 11. packing gland; 12. bolt; 13. third hexagon nut; 14. anti-rotation slider; 15. valve nut seat; 16. handwheel; 17. bearing cover; 18. valve stem nut; 19. packing; 20. stuffing box; 21. screw; 22. gasket. Detailed Embodiment

[0018] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The following will further describe the technical solutions of the present utility model with reference to the drawings of the embodiments of the present utility model. The present utility model is not limited to the following specific embodiments.

[0019] It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations.

[0020] In one embodiment, as Figure 1As shown in the figure, the detachable column bellows gate valve includes a valve body 1. A gate plate 2 is provided near the right side of the outer edge of the valve body 1. A valve stem 3 is provided at the top of the gate plate 2. A winding gasket 4 is provided at the top of the valve stem 3. Two valve covers 5 are provided at the top of the valve body 1. A number of first threaded holes are opened in the inner cavities of the two valve covers 5. A stud 6 is commonly threadedly connected to the inner cavities of two adjacent first threaded holes. First hex nuts 7 are threadedly connected to the outer edges of the studs 6 near the top. A bellows 8 is provided at the top of the valve body 1. A gasket 22 is provided at the top of the bellows 8. A screw 21 is provided at the top of the gasket 22. A stuffing box 20 is provided at the top of the screw 21. A packing 19 is provided at the top of the stuffing box 20;

[0021] A packing gland 11 is provided at the top of the packing 19. A bolt 12 is provided in the inner cavity of the packing gland 11. A third hex nut 13 is threadedly connected to the outer edge of the bolt 12 near the top. A valve nut seat 15 is provided at the top of the bellows 8. A number of columns 10 penetrate through the inner cavity of the valve nut seat 15. Second hex nuts 9 are threadedly connected to the outer edges of the columns 10 near the top and bottom. A valve stem nut 18 is provided at the top of the valve nut seat 15. A bearing cover 17 is provided on the outer edge of the valve stem nut 18. A handwheel 16 is provided at the top of the bearing cover 17. An anti-rotation slider 14 is provided at the bottom of the bearing cover 17.

[0022] Working principle: The valve cover 5 and the valve nut seat 15 are connected by columns 10, with a simple structure, being detachable and easy to maintain. An anti-rotation slider 14 is specially provided to prevent the valve stem 3 from rotating and twisting the bellows 8. The bellows 8 is directly welded to the bottom of the stuffing box 20, and the lower part of the valve stem 3 is welded to the bellows 8. This is a metal barrier seal. The packing 19 is placed in the hole of the stuffing box 20, and the packing gland 11 is used to cooperate to achieve the seal of the packing 19. The multiple sealing effects of the bellows 8 and the packing 19 can be achieved. The detachable stuffing box 20, and the valve stem 3 and the bellows 8 can be disassembled and assembled as a whole, simplifying the installation process.

[0023] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0024] The above-described embodiments only represent several implementation manners of the present utility model, and the description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent should be subject to the appended claims.

Claims

1. Removable column bellows gate valve, characterized in that: The invention comprises a valve body (1), wherein a gate plate (2) is provided at the outer edge of the valve body (1) near the right side, a valve stem (3) is provided at the top of the gate plate (2), a spiral wound gasket (4) is provided at the top of the valve stem (3), two valve covers (5) are provided at the top of the valve body (1), a plurality of first threaded holes are provided in the inner cavities of the two valve covers (5), a stud (6) is threadedly connected to the inner cavities of two adjacent first threaded holes, a first hexagonal nut (7) is threadedly connected to the outer edge of the stud (6) near the top, and a bellows (8) is provided at the top of the valve body (1).

2. The detachable column bellows gate valve according to claim 1, characterized in that: A gasket (22) is provided at the top of the bellows (8), a screw (21) is provided at the top of the gasket (22), a stuffing box (20) is provided at the top of the screw (21), and a stuffing box (19) is provided at the top of the stuffing box (20).

3. The detachable column bellows gate valve according to claim 2, characterized in that: A packing gland (11) is provided at the top of the packing (19), a bolt (12) is provided in the inner cavity of the packing gland (11), a third hexagonal nut (13) is threadedly connected to the outer edge of the bolt (12) near the top, a valve mother seat (15) is provided at the top of the bellows (8), a plurality of columns (10) are penetrated through the inner cavity of the valve mother seat (15), and second hexagonal nuts (9) are threadedly connected to the outer edges of the columns (10) near the top and the bottom.

4. The detachable column bellows gate valve according to claim 3, characterized in that: A valve stem nut (18) is provided on the top of the valve mother seat (15), and a bearing cover (17) is provided on the outer edge of the valve stem nut (18).

5. The detachable column bellows gate valve according to claim 4, characterized in that: A hand wheel (16) is provided on the top of the bearing cover (17), and an anti-rotation sliding block (14) is provided on the bottom of the bearing cover (17).

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