Valve cover structure of gate valve

Abstract

The utility model relates to the technical field of valve manufacturing, and discloses a gate valve bonnet structure which comprises a top cover, a first connecting plate is fixedly connected to the outer wall of the top cover, a fixing column is fixedly connected to the lower surface of the first connecting plate, a fixing assembly is arranged on the outer wall of the fixing column, and a locking assembly is arranged on the outer wall of the top cover. A sealing assembly is arranged in the top cover, the fixing assembly comprises a first arc-shaped plate, the outer wall of the first arc-shaped plate is fixedly connected to the inner wall of the fixing column, one end of the first arc-shaped plate is rotationally connected with a second connecting shaft, and the other end of the first arc-shaped plate is rotationally connected with a first connecting shaft; and the outer wall of the first connecting shaft is fixedly connected with a second arc-shaped plate. According to the utility model, when the valve body needs to be mounted by the top cover, the handle is pulled to loosen the fixing assembly to clamp the valve body, and then the handle is pressed down, so that the top cover and the valve body are firmly mounted and fixed together, and compared with screw mounting, the valve cover and the valve body are mounted more quickly.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve manufacturing technical field especially relates to a gate valve bonnet structure. BACKGROUND

[0002] The gate valve bonnet is usually a component with certain thickness and shape, which is located at the top of the gate valve. It is generally round or square, and its structure includes the part connected with the valve body and the space accommodating the valve rod and other components. There can be a groove for mounting the sealing element inside, and an interface part connected with the actuator outside. The gate valve contains important components such as the valve rod and the gate plate. The bonnet protects these components from external environmental factors such as dust, moisture, corrosive gases, etc. The bonnet cooperates with the valve body to form a seal at the top of the gate valve, which is crucial for preventing medium leakage. By installing a sealing element between the bonnet and the valve body, fluid leakage from the top of the gate valve can be effectively prevented. The presence of the bonnet facilitates the installation of other components of the gate valve. When repairing the gate valve, opening the bonnet allows easy access to the internal components for inspection, replacement or repair operations.

[0003] The bonnet is usually connected to the valve body through a flange, which has evenly distributed bolt holes. Bolts and nuts are used to tightly fix the bonnet and the valve body together. For some small-diameter or low-pressure gate valves, the bonnet may be connected to the valve body by screw threads. The bonnet has a stuffing box inside to accommodate the packing. Sealing rings are often used at the joint surface between the bonnet and the valve body and at the mating part between the valve rod and the bonnet to enhance the sealing effect. The bonnet has a certain internal cavity space to accommodate the valve rod, valve rod nut, packing and other components.

[0004] The existing gate valve bonnet usually needs to be tightened by multiple screws one by one during installation, which is a tedious and time-consuming process. Especially for large-diameter or high-bolt-count gate valves, the installation time will be longer and the installation efficiency will be lower. UTILITY MODEL CONTENTS

[0005] To overcome the above shortcomings, the utility model provides a gate valve bonnet structure to improve the problem of long installation time and low installation efficiency caused by the need to tighten multiple screws one by one during installation of the gate valve bonnet.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a gate valve bonnet structure, comprising a top cover, the outer wall of the top cover is fixedly connected with a first connecting plate, the lower surface of the first connecting plate is fixedly connected with a fixed column, the outer wall of the fixed column is provided with a fixed assembly, the outer wall of the top cover is provided with a locking assembly, and the inside of the top cover is provided with a sealing assembly.

[0007] The fixed assembly comprises a first arc-shaped plate, the outer wall of the first arc-shaped plate is fixedly connected to the inner wall of the fixed column, one end of the first arc-shaped plate is rotatably connected with a second connecting shaft, the other end of the first arc-shaped plate is rotatably connected with a first connecting shaft, the outer wall of the first connecting shaft is fixedly connected with a second arc-shaped plate, one end of the second arc-shaped plate is fixedly connected with a second connecting column, the outer wall of the second connecting column is rotatably connected with a second connecting plate, the outer wall of the second connecting plate is fixedly connected with a first connecting column, and the inner part of the first connecting column is rotatably connected with a circular ring.

[0008] Further, the locking assembly comprises a handle, one end of the handle is fixedly connected to the outer wall of the first connecting column, the inner wall of the handle is fixedly connected with a first fixed plate, the inner wall of the first fixed plate is fixedly connected with a clamping block, the inner wall of the first fixed plate is fixedly connected with a spring, the other end of the spring is fixedly connected with a second fixed plate, the outer wall of the second fixed plate is fixedly connected with a clamping plate, and the inner part of the clamping plate is rotatably connected with a third connecting shaft.

[0009] Further, the sealing assembly comprises a first sealing ring, the first sealing ring is fixedly connected to the lower surface of the top cover, and a second sealing ring is fixedly connected below the first sealing ring.

[0010] Further, the lower surface of the second sealing ring is fixedly connected with a valve body, and the lower surface of the valve body is fixedly connected with a connecting pipe.

[0011] Further, the outer wall of the circular ring is rotatably connected with a third connecting column, and the third connecting column is used for connecting the circular ring and the second arc-shaped plate.

[0012] Further, the inner wall of the second arc-shaped plate is fixedly connected to the outer wall of the top cover, and the inner wall of the first arc-shaped plate is fixedly connected to the outer wall of the top cover.

[0013] Further, the upper surface of the top cover is fixedly connected with a support, and the lower surface of the top cover is fixedly connected to the upper surface of the valve body.

[0014] Further, the outer wall of the clamping block is slidably connected to the inner wall of the clamping plate, and the clamping plate is used for fixing the clamping block.

[0015] The utility model has the advantages of the following beneficial effects:

[0016] 1、in the utility model, through the action of second arc-shaped plate and first arc-shaped plate, second arc-shaped plate and first arc-shaped plate are fixedly connected on the top cover, a plurality of connecting shafts are arranged on the second arc-shaped plate, so that second arc-shaped plate and first arc-shaped plate are connected together, when it is needed to install the top cover to the valve body, the handle is moved to make the fixed assembly loose and clamp the valve body, then the handle is pressed down, so that it becomes firm, and the top cover and the valve body are installed and fixed together, compared with screw installation, the valve cover and the valve body are more quickly installed.

[0017] 2、The utility model discloses, through locking assembly, make fixed assembly more firm, prevent second arc plate and first arc plate and fall off, double -layer sealing ring provides double -layer sealing guarantee, even if the outer sealing ring because long -term use appears abrasion, aging etc. damage, the inner sealing ring still can play the sealing function when, the risk of medium leakage is reduced greatly. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A three-dimensional structure schematic view of a gate valve cover structure is provided for the utility model;

[0019] Figure 2 A second arc plate partial structure schematic view of a gate valve cover structure is provided for the utility model;

[0020] Figure 3 A sealing ring partial structure schematic view of a gate valve cover structure is provided for the utility model;

[0021] Figure 4 A circular ring partial structure schematic view of a gate valve cover structure is provided for the utility model;

[0022] Figure 5 For Figure 4 The enlarged view of A in the figure.

[0023] Legend:

[0024] 1, support, 2, top cover, 3, valve body, 4, connecting pipe, 5, first connecting plate, 6, fixed column, 7, circular ring, 8, first connecting column, 9, second connecting plate, 10, second connecting column, 11, third connecting column, 12, hand, 13, second arc plate, 14, first connecting shaft, 15, second connecting shaft, 16, first fixed plate, 17, second fixed plate, 18, clamping block, 19, spring, 20, clamping plate, 21, third connecting shaft, 22, second sealing ring, 23, first arc plate, 24, first sealing ring. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings in the embodiments of the utility model below, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of protection of the utility model.

[0026] Refer to Figures 1-5The utility model provides an embodiment: a gate valve bonnet structure, including the top 2, the first connecting plate 5 is fixedly connected to the top 2 outer wall, the first connecting plate 5 lower surface is fixedly connected with fixed column 6, and the fixed column 6 outer wall is provided with fixed assembly, and the fixed assembly is used to install the top 2 and valve body 3, and the top 2 outer wall is provided with lock assembly, and the lock assembly is used to prevent the hand 12 from falling off, and the top 2 inside is provided with sealing assembly, and the sealing assembly is used to prevent liquid leakage, and the fixed assembly includes first arc plate 23, and the first arc plate 23 outer wall is fixedly connected in the fixed column 6 inner wall, and the first arc plate 23 one end is rotatably connected with second connecting shaft 15, and the first arc plate 23 can rotate along second connecting shaft 15, and the first arc plate 23 other end is rotatably connected with first connecting shaft 14, and the first connecting shaft 14 outer wall is fixedly connected with second arc plate 13, and the second arc plate 13 one end is fixedly connected with second connecting column 10, and the second connecting column 10 outer wall is rotatably connected with second connecting plate 9, and the second connecting plate 9 outer wall is fixedly connected with first connecting column 8, and the first connecting column 8 inside is rotatably connected with circular ring 7, and the circular ring 7 can rotate along second connecting column 10 and third connecting column 11.

[0027] Referring to Figures 1-5 The lock assembly includes hand 12, and the hand 12 one end is fixedly connected in the first connecting column 8 outer wall, and the hand 12 inner wall is fixedly connected with first fixed plate 16, and the first fixed plate 16 inner wall is fixedly connected with clamping block 18, and the first fixed plate 16 inner wall is fixedly connected with spring 19, and by pressing spring 19 through hand 12, clamping block 18 is clamped in clamping plate 20, and lock effect can be realized, and the spring 19 other end is fixedly connected with second fixed plate 17, and the second fixed plate 17 outer wall is fixedly connected with clamping plate 20, and the clamping plate 20 inside is rotatably connected with third connecting shaft 21, and the sealing assembly includes first sealing ring 24, and the first sealing ring 24 is fixedly connected in the top 2 lower surface, and the first sealing ring 24 lower surface is fixedly connected with second sealing ring 22, and the first sealing ring 24 and second sealing ring 22 are fixedly attached, and double-layer sealing effect is realized.

[0028] Referring to Figures 1-5 The second sealing ring 22 lower surface is fixedly connected with valve body 3, and the valve body 3 lower surface is fixedly connected with connecting pipe 4, and the circular ring 7 outer wall is rotatably connected with third connecting column 11, and the third connecting column 11 is used to connect circular ring 7 and second arc plate 13, and the second arc plate 13 inner wall is fixedly connected in the top 2 outer wall, and the first arc plate 23 inner wall is fixedly connected in the top 2 outer wall, and the second arc plate 13 and first arc plate 23 can rotate, and the top 2 upper surface is fixedly connected with support 1, and the top 2 lower surface is fixedly connected in the valve body 3 upper surface, and the clamping block 18 outer wall is slidably connected in the clamping plate 20 inner wall, and the clamping plate 20 is used to fix clamping block 18.

[0029] Working principle: when the valve cover needs to be installed on the valve body 3, first, the hand 12 of the outer wall of the top cover 2 is broken, when the hand 12 is broken, the clamping block 18 is pulled out from the clamping plate 20, the ring 7 rotates along the second connecting column 10, at this time, the connection between the second arc plate 13 and the first arc plate 23 is loose, the top cover 2 is installed on the valve body 3, after the top cover 2 is placed on the valve body 3, the hand 12 is pressed inward, the clamping block 18 and the clamping plate 20 are clamped and fixed through the force of the spring 19, at this time, the first sealing ring 24 in the top cover 2 and the second sealing ring 22 in the valve body 3 are fixed, the double-layer sealing effect is realized, when the second sealing ring 22 is damaged during work, the first sealing ring 24 can prevent liquid leakage, when the top cover 2 needs to be disassembled, the hand 12 is broken, the ring 7 rotates along the second connecting column 10, so that the connection between the second arc plate 13 and the first arc plate 23 is loose, so that the top cover 2 is taken out from above the valve body 3.

[0030] Finally, it should be pointed out that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. made within the spirit and principles of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A gate valve bonnet structure comprising a top cover (2), characterized in that: The outer wall of the top cover (2) is fixedly connected with a first connecting plate (5), the lower surface of the first connecting plate (5) is fixedly connected with a fixed column (6), the outer wall of the fixed column (6) is provided with a fixing assembly, the outer wall of the top cover (2) is provided with a locking assembly, and the inside of the top cover (2) is provided with a sealing assembly. The fixing assembly comprises a first arc-shaped plate (23), the outer wall of the first arc-shaped plate (23) is fixedly connected to the inner wall of the fixed column (6), one end of the first arc-shaped plate (23) is rotatably connected with a second connecting shaft (15), the other end of the first arc-shaped plate (23) is rotatably connected with a first connecting shaft (14), the outer wall of the first connecting shaft (14) is fixedly connected with a second arc-shaped plate (13), one end of the second arc-shaped plate (13) is fixedly connected with a second connecting column (10), the outer wall of the second connecting column (10) is rotatably connected with a second connecting plate (9), the outer wall of the second connecting plate (9) is fixedly connected with a first connecting column (8), and the inside of the first connecting column (8) is rotatably connected with a circular ring (7).

2. A gate valve bonnet structure as defined in claim 1, wherein: The locking assembly comprises a hand (12), one end of the hand (12) is fixedly connected to the outer wall of the first connecting column (8), the inner wall of the hand (12) is fixedly connected with a first fixed plate (16), the inner wall of the first fixed plate (16) is fixedly connected with a clamping block (18), the inner wall of the first fixed plate (16) is fixedly connected with a spring (19), the other end of the spring (19) is fixedly connected with a second fixed plate (17), the outer wall of the second fixed plate (17) is fixedly connected with a clamping plate (20), and the inside of the clamping plate (20) is rotatably connected with a third connecting shaft (21).

3. A gate valve bonnet structure as defined in claim 1, wherein: The sealing assembly comprises a first sealing ring (24), the first sealing ring (24) is fixedly connected to the lower surface of the top cover (2), and a second sealing ring (22) is fixedly connected below the first sealing ring (24).

4. A gate valve bonnet structure as defined in claim 3 wherein: The lower surface of the second sealing ring (22) is fixedly connected with a valve body (3), and the lower surface of the valve body (3) is fixedly connected with a connecting pipe (4).

5. A gate valve bonnet structure as defined in claim 1, wherein: The outer wall of the circular ring (7) is rotatably connected with a third connecting column (11), and the third connecting column (11) is used for connecting the circular ring (7) and the second arc-shaped plate (13).

6. A gate valve bonnet structure as defined in claim 1, wherein: The inner wall of the second arc-shaped plate (13) is fixedly connected to the outer wall of the top cover (2), and the inner wall of the first arc-shaped plate (23) is fixedly connected to the outer wall of the top cover (2).

7. A gate valve bonnet structure as defined in claim 1, wherein: The upper surface of the top cover (2) is fixedly connected with a support (1), and the lower surface of the top cover (2) is fixedly connected to the upper surface of the valve body (3).

8. A gate valve bonnet structure as defined in claim 2 wherein: The outer wall of the clamping block (18) is slidably connected to the inner wall of the clamping plate (20), and the clamping plate (20) is used for fixing the clamping block (18).

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