Soft seal ball valve

Abstract

The utility model discloses a soft sealing ball valve, and relates to the technical field of valves. The soft sealing ball valve comprises a fixed valve shell, a butt joint valve shell, a valve rod and a pneumatic actuator, the butt joint valve shell is connected with the fixed valve shell in an inserted mode, the valve rod is located on the inner side of the fixed valve shell, and the pneumatic actuator is located above the fixed valve shell. According to the soft sealing ball valve, the first sealing ring, the second sealing ring and the sealing filler are arranged, and the valve ball is tightly attached to the first valve seat and the second valve seat, so that the sealing performance of the valve is effectively improved, and the risk of leakage is reduced; the butt joint valve shell and the fixed valve shell are connected in an inserted mode and fixed through the connecting bolts, the installation process is simple and fast, and site construction is facilitated; the liquid collector is arranged, so that liquid leaked from the valve can be conveniently collected, and workers can conveniently observe the liquid so as to timely discover and maintain the liquid; meanwhile, due to the design of the valve rod protection sleeve, the service life of the valve rod is prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a soft-seal ball valve. Background Technology

[0002] Ball valves, as a common type of valve, are widely used in various fluid pipeline systems. Soft-seal ball valves, due to their good sealing performance and ease of operation, are favored by many users.

[0003] However, existing soft-seal ball valves still have some shortcomings in terms of sealing structure, installation method, and ease of maintenance. The imperfect sealing structure makes them prone to leakage during use; the installation process is relatively complex, hindering on-site construction; and it is difficult to observe even minor leaks, leading to delayed detection and increased operating costs and maintenance difficulty.

[0004] The sealing structure is not perfect, which can easily lead to leakage problems. The installation process is relatively complicated and not conducive to on-site construction. Small leaks are difficult to detect, resulting in untimely maintenance. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a soft-seal ball valve, which solves the problems of an imperfect sealing structure, easy leakage, complex installation process, difficulty in on-site construction, and difficulty in detecting small leaks, leading to untimely maintenance.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a soft-seal ball valve, comprising a fixed valve housing, a docking valve housing, a valve stem, and a pneumatic actuator, wherein the docking valve housing is inserted into the fixed valve housing, the valve stem is located inside the fixed valve housing, and the pneumatic actuator is located above the fixed valve housing; the fixed valve housing comprises:

[0007] The housing has a first retaining ring on its outer side, and a first sealing ring is fitted around the outer side of the first retaining ring;

[0008] A pressure cap, which is inserted into the top of the housing;

[0009] The docking valve housing includes:

[0010] The second retaining ring is connected to the outside of the docking valve housing;

[0011] The second sealing ring is fitted onto the outside of the second retaining ring.

[0012] Preferably, a first valve seat is provided on the inner side of the housing, and a liquid collector is provided at the bottom of the housing, the liquid collector being connected to the housing by bolts.

[0013] Preferably, the bottom of the gland is provided with a sealing filler, which is inserted into the inner side of the housing.

[0014] Preferably, a second valve seat is provided on the inner side of the docking valve housing, and a connecting bolt is inserted into the outer side of the docking valve housing, the connecting bolt being inserted into the housing.

[0015] Preferably, the valve stem is inserted into the inner side of the gland and passes through the sealing packing to the inner side of the housing. A valve stem protective sleeve is fitted onto the outer side of the valve stem, and the valve stem protective sleeve is snapped into the inner side of the housing. A valve ball is fitted onto the bottom of the valve stem, and the valve ball is in close contact with the first valve seat and the second valve seat. A nut is fitted onto the top of the valve stem.

[0016] Preferably, the pneumatic actuator has a connecting shaft at its bottom, which is sleeved on the outside of the valve stem, and a bracket at its bottom, which is bolted to the top of the housing.

[0017] This utility model discloses a soft-seal ball valve. Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a first sealing ring, a second sealing ring, and sealing packing, and by ensuring the tight contact between the valve ball and the first and second valve seats, the sealing performance of the valve is effectively improved, and the risk of leakage is reduced; by setting the butt valve body and the fixed valve body to be connected by a plug-in method and fixed by connecting bolts, the installation process is simple and quick, facilitating on-site construction; a liquid collector is provided to facilitate the collection of leaked liquid from the valve, making it convenient for staff to observe and promptly detect and repair; at the same time, the design of the valve stem protective sleeve extends the service life of the valve stem and reduces maintenance costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the fixed valve shell of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the docking valve housing of this utility model;

[0021] Figure 4 This is a schematic diagram of the valve stem structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the pneumatic actuator of this utility model.

[0023] In the diagram: 1. Fixed valve body; 11. Housing; 111. First valve seat; 112. First retaining ring; 113. First sealing ring; 114. Liquid collector; 12. Gland; 121. Sealing packing; 2. Connecting valve body; 21. Second valve seat; 22. Second retaining ring; 23. Second sealing ring; 24. Connecting bolt; 3. Valve stem; 31. Valve stem protective sleeve; 32. Valve ball; 33. Nut; 4. Pneumatic actuator; 41. Connecting shaft; 42. Bracket. Detailed Implementation

[0024] 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.

[0025] This application provides a soft-seal ball valve, which solves the problems of insufficient sealing structure, easy leakage, complicated installation process, difficulty in on-site construction, difficulty in detecting small leakage, and untimely maintenance. It improves sealing performance, facilitates on-site installation, and is convenient for maintenance.

[0026] This utility model discloses a soft-seal ball valve.

[0027] Example 1

[0028] According to the appendix Figure 1-5 As shown, the device includes a fixed valve housing 1, a docking valve housing 2, a valve stem 3, and a pneumatic actuator 4. The docking valve housing 2 is inserted into the fixed valve housing 1. The valve stem 3 is located inside the fixed valve housing 1, and the pneumatic actuator 4 is located above the fixed valve housing 1. The fixed valve housing 1 includes:

[0029] The housing 11 has a first retaining ring 112 on its outer side, and a first sealing ring 113 is fitted onto the outer side of the first retaining ring 112.

[0030] Pressure cap 12 is inserted into the top of housing 11;

[0031] The docking valve housing 2 includes:

[0032] The second retaining ring 22 is connected to the outside of the docking valve housing 2;

[0033] The second sealing ring 23 is fitted onto the outside of the second retaining ring 22.

[0034] By setting the first sealing ring 113, the second sealing ring 23, and the sealing packing 121, and by ensuring the tight fit between the valve ball 32 and the first valve seat 111 and the second valve seat 21, the sealing performance of the valve is effectively improved, and the risk of leakage is reduced. By setting the butt valve body 2 and the fixed valve body 1 to be connected by a plug-in method and fixed by connecting bolts 24, the installation process is simple and quick, facilitating on-site construction. The liquid collector 114 is provided to facilitate the collection of leaked liquid from the valve, making it easy for staff to observe and promptly detect and repair. At the same time, the design of the valve stem protective sleeve 31 extends the service life of the valve stem 3 and reduces maintenance costs.

[0035] Furthermore, a first valve seat 111 is provided on the inner side of the housing 11, and a liquid collector 114 is provided at the bottom of the housing 11. The liquid collector 114 is connected to the housing 11 by bolts.

[0036] Furthermore, a sealing filler 121 is provided at the bottom of the gland 12, and the sealing filler 121 is inserted into the inside of the housing 11.

[0037] Specifically disclosed, a second valve seat 21 is provided on the inner side of the docking valve housing 2, and a connecting bolt 24 is inserted into the outer side of the docking valve housing 2, and the connecting bolt 24 is inserted into the housing 11.

[0038] Specifically disclosed, the valve stem 3 is inserted into the inner side of the gland 12 and passes through the sealing packing 121 to the inner side of the housing 11. A valve stem protective sleeve 31 is sleeved on the outer side of the valve stem 3, and the valve stem protective sleeve 31 is snapped into the inner side of the housing 11. A valve ball 32 is sleeved on the bottom of the valve stem 3. The valve ball 32 is in close contact with the first valve seat 111 and the second valve seat 21. A nut 33 is sleeved on the top of the valve stem 3.

[0039] Example 2

[0040] According to the appendix Figure 1-5 As shown, the device includes a fixed valve housing 1, a docking valve housing 2, a valve stem 3, and a pneumatic actuator 4. The docking valve housing 2 is inserted into the fixed valve housing 1. The valve stem 3 is located inside the fixed valve housing 1, and the pneumatic actuator 4 is located above the fixed valve housing 1. The fixed valve housing 1 includes:

[0041] The housing 11 has a first retaining ring 112 on its outer side, and a first sealing ring 113 is fitted onto the outer side of the first retaining ring 112.

[0042] Pressure cap 12 is inserted into the top of housing 11;

[0043] The docking valve housing 2 includes:

[0044] The second retaining ring 22 is connected to the outside of the docking valve housing 2;

[0045] The second sealing ring 23 is fitted onto the outside of the second retaining ring 22.

[0046] It should be emphasized that the pneumatic actuator 4 is provided with a connecting shaft 41 at the bottom, which is sleeved on the outside of the valve stem 3. The pneumatic actuator 4 is provided with a bracket 42 at the bottom, which is bolted to the top of the housing 11.

[0047] Working principle: By setting the first sealing ring 113, the second sealing ring 23, and the sealing packing 121, and the tight fit between the valve ball 32 and the first valve seat 111 and the second valve seat 21, the sealing performance of the valve is effectively improved and the risk of leakage is reduced; by setting the butt valve body 2 and the fixed valve body 1 to be connected by plug-in method and fixed by connecting bolts 24, the installation process is simple and quick, which is convenient for on-site construction; a liquid collector 14 is set to collect the liquid leaking from the valve, which is convenient for the staff to observe and thus discover and repair in time; at the same time, the design of the valve stem protective sleeve 31 extends the service life of the valve stem 3 and reduces maintenance costs.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A soft-seal ball valve, comprising a fixed valve housing (1), a docking valve housing (2), a valve stem (3), and a pneumatic actuator (4), wherein the docking valve housing (2) is inserted into the fixed valve housing (1), the valve stem (3) is located inside the fixed valve housing (1), and the pneumatic actuator (4) is located above the fixed valve housing (1), characterized in that, The fixed valve body (1) includes: The housing (11) has a first retaining ring (112) on its outer side, and a first sealing ring (113) is sleeved on the outer side of the first retaining ring (112); A pressure cap (12) is inserted into the top of the housing (11); The docking valve housing (2) includes: The second retaining ring (22) is connected to the outside of the docking valve housing (2); The second sealing ring (23) is fitted onto the outside of the second retaining ring (22).

2. The soft-seal ball valve according to claim 1, characterized in that, The inner side of the housing (11) is provided with a first valve seat (111), and the bottom of the housing (11) is provided with a liquid collector (114), which is connected to the housing (11) by bolts.

3. The soft-seal ball valve according to claim 1, characterized in that, The bottom of the pressure cap (12) is provided with a sealing filler (121), which is inserted into the inside of the housing (11).

4. The soft-seal ball valve according to claim 1, characterized in that, The inner side of the docking valve housing (2) is provided with a second valve seat (21), and the outer side of the docking valve housing (2) is connected with a connecting bolt (24), which is inserted into the housing (11).

5. The soft-seal ball valve according to claim 3, characterized in that, The valve stem (3) is inserted into the inside of the gland (12) and passes through the sealing packing (121) to the inside of the housing (11). A valve stem protective sleeve (31) is sleeved on the outside of the valve stem (3). The valve stem protective sleeve (31) is snapped into the inside of the housing (11). A valve ball (32) is sleeved on the bottom of the valve stem (3). The valve ball (32) is in close contact with the first valve seat (111) and the second valve seat (21). A nut (33) is sleeved on the top of the valve stem (3).

6. The soft-seal ball valve according to claim 1, characterized in that, The pneumatic actuator (4) has a connecting shaft (41) at its bottom, which is sleeved on the outside of the valve stem (3). The pneumatic actuator (4) has a bracket (42) at its bottom, which is bolted to the top of the housing (11).

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