Ball valve with easy maintenance

Abstract

The utility model relates to valve technical field and disclose a ball valve convenient to maintain, this ball valve convenient to maintain, including valve body, stud nut fastener, internal hexagonal bolt, the one side detachable mounting of valve body has the valve cover, the valve body with between the valve cover is locked through internal hexagonal bolt, the valve body with the valve cover jointly constitutes valve body, the both ends of valve body correspond to be provided with side flange, two the side flanges are welded fixedly with the pipeline to be connected in advance, the valve body with every side flange all is provided with sealing washer, the valve body with two side flanges are fixed through the stud nut fastener of penetrating both sides, the utility model solves the problem that the existing side -mounted welding end valve maintenance needs to cut the pipeline, realizes on -line dismounting, shortens the maintenance time, reduces the risk of fire operation, adapts the installation scene of pipeline dense, not easy to reach, promotes the use flexibility.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a ball valve that is easy to maintain. Background Technology

[0002] Most commonly used valves employ top-mounted or side-mounted structures. To ensure reliable sealing and reduce leakage points, valves are typically welded and fixed to the pipeline. When a valve requires maintenance, seal replacement, or cleaning, the entire valve must be cut off from the pipeline, and then welded back onto the pipeline after the operation is completed.

[0003] This maintenance method has obvious drawbacks: on the one hand, cutting and welding operations are restricted by the environment, and hot work is not allowed in some scenarios; on the other hand, when pipelines are densely arranged, valve positions are not easy to reach, which greatly increases the difficulty of cutting and welding, not only prolonging maintenance time, but also increasing labor costs and operational risks. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a ball valve that is easy to maintain. This solves the problems that, on the one hand, cutting and welding operations are restricted by the environment, and hot work is not allowed in some scenarios; on the other hand, when pipelines are densely arranged, the valve position is not easy to reach, which greatly increases the difficulty of cutting and welding, not only prolonging maintenance time, but also increasing labor costs and operational risks.

[0005] This utility model provides the following technical solution: a ball valve that is easy to maintain, including a valve body, studs, nuts, fasteners, and hexagon socket head caps. A valve cover is detachably installed on one side of the valve body. The valve body and the valve cover are locked together by the hexagon socket head caps. The valve body and the valve cover together form the valve body.

[0006] The valve body is provided with side flanges at both ends. The two side flanges are pre-welded and fixed to the pipe to be connected. A sealing gasket is provided between the valve body and each side flange. The valve body and the two side flanges are fixed by stud and nut fasteners that pass through them.

[0007] The valve body has a ball and a valve stem installed in its internal cavity.

[0008] Preferred technical solution 1: The sealing gasket is a composite material of metal and graphite.

[0009] Preferred technical solution 2: The hexagon socket bolts are evenly distributed circumferentially along the connection end face between the valve body and the valve cover, and the number of hexagon socket bolts is four.

[0010] Preferred technical solution 3: The head of the internal hex bolt is recessed into the end face of the valve cover.

[0011] Preferred technical solution four: The surface of the side flange is provided with threaded holes that match the studs and nuts fasteners, and the side flange and the valve body are locked together by multiple studs and nuts fasteners.

[0012] Preferred technical solution five: The shape of the sealing gasket is adapted to the end face of the valve body and the mating surface of the side flange.

[0013] Compared with the prior art, this utility model provides a ball valve that is easy to maintain and has the following advantages:

[0014] (1) This ball valve is easy to maintain. During maintenance, there is no need to cut the pipeline. Only the stud and nut fasteners need to be removed to take out the valve body. Then, the ball, valve stem and other parts can be taken out by removing the internal hex bolts. After maintenance, it can be directly reinstalled, which greatly shortens the maintenance time.

[0015] (2) This ball valve is easy to maintain and is not limited by dense pipeline layout or difficult valve position, which improves the flexibility of use of side-mounted welded end valves and saves manpower and time costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is an exploded view of the structure of this utility model;

[0018] Figure 3 This is a cross-sectional view of the structure of this utility model.

[0019] In the diagram: 1. Valve body; 2. Valve cover; 3. Side flange; 4. Stud and nut fasteners; 5. Sealing gasket; 6. Socket head bolt; 7. Ball; 8. Valve stem; 9. Valve body. Detailed Implementation

[0020] Please see Figure 1-3 ,

[0021] Example 1: A ball valve that is easy to maintain includes a valve body 1, stud nut fasteners 4, and hex bolts 6. A valve cover 2 is detachably installed on one side of the valve body 1. The valve body 1 and the valve cover 2 are locked together by the hex bolts 6. The valve body 1 and the valve cover 2 together form the valve body 9.

[0022] The valve body 9 is provided with side flanges 3 at both ends. The two side flanges 3 are pre-welded and fixed to the pipeline to be connected. A sealing gasket 5 is provided between the valve body 9 and each side flange 3. The valve body 9 and the two side flanges 3 are fixed by stud and nut fasteners 4 that pass through them.

[0023] The valve body 9 has a ball 7 and a valve stem 8 installed in its internal cavity.

[0024] Example 2: The difference between this example and Example 1 is that the sealing gasket 5 is made of a composite material of metal and graphite.

[0025] Example 3: The difference between this example and Example 1 is that the internal hex bolts 6 are evenly distributed circumferentially along the connection end face between the valve body 1 and the valve cover 2, and the number of internal hex bolts 6 is four.

[0026] Example 4: The difference between this example and Example 1 is that the head of the internal hex bolt 6 is recessed into the end face of the valve cover 2.

[0027] Example 5: The difference between this example and Example 1 is that the surface of the side flange 3 is provided with threaded holes that match the studs and nuts fasteners 4, and the side flange 3 and the valve body 9 are locked together by multiple studs and nuts fasteners 4.

[0028] Example 6: The difference between this example and Example 1 is that the shape of the sealing gasket 5 is adapted to the mating surface of the valve body 9 end face and the side flange 3.

[0029] In summary, this easy-to-maintain ball valve can be repaired, have its seals replaced, or be cleaned by loosening and removing the stud nuts 4 on both sides. Then, the valve body can be directly removed from between the two side flanges 3 without touching the welded structure between the pipe and the side flanges 3. Then, the internal hex bolts 6 can be removed to separate the valve body 1 from the valve cover 2, and the ball 7 and valve stem 8 can be removed for repair, replacement, or cleaning. At the same time, the sealing gasket 5 can be replaced.

[0030] After the maintenance is completed, assemble in reverse order: first, fasten the valve body 1 and valve cover 2 with the internal hex bolts 6, then place the valve body and sealing gasket 5 together between the side flange 3, and tighten them with stud nuts 4 to the rated torque to complete the reassembly;

[0031] The number of embedded hexagonal screws 6 can be adjusted according to the valve specifications to ensure connection strength; the material of the sealing gasket 5 can be selected from suitable composite materials according to working conditions to ensure sealing effect.

Claims

1. A ball valve that is easy to maintain, comprising a valve body (1), a stud nut fastener (4), and an internal hex bolt (6), characterized in that: A valve cover (2) is detachably installed on one side of the valve body (1). The valve body (1) and the valve cover (2) are locked together by an internal hex bolt (6). The valve body (1) and the valve cover (2) together form the valve body (9). The valve body (9) is provided with side flanges (3) at both ends. The two side flanges (3) are pre-welded and fixed to the pipe to be connected. A sealing gasket (5) is provided between the valve body (9) and each side flange (3). The valve body (9) and the two side flanges (3) are fixed by stud and nut fasteners (4) that pass through them. The valve body (9) has a ball (7) and a valve stem (8) installed in its internal cavity.

2. The ball valve for easy maintenance according to claim 1, characterized in that: The sealing gasket (5) is made of a composite material of metal and graphite.

3. The ball valve for easy maintenance according to claim 1, characterized in that: The hexagonal socket bolts (6) are evenly distributed circumferentially along the connection end face between the valve body (1) and the valve cover (2), and there are four hexagonal socket bolts (6).

4. The ball valve for easy maintenance according to claim 1, characterized in that: The head of the internal hex bolt (6) is recessed into the end face of the valve cover (2).

5. A ball valve for easy maintenance according to claim 1, characterized in that: The side flange (3) has threaded holes that match the stud nut fasteners (4) on its surface. The side flange (3) and the valve body (9) are locked together by multiple stud nut fasteners (4).

6. A ball valve for easy maintenance according to claim 1, characterized in that: The shape of the sealing gasket (5) is adapted to the end face of the valve body (9) and the mating surface of the side flange (3).

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