High-speed hard alloy ball valve structure with sealing air bag

Abstract

The utility model provides a high-speed hard alloy ball valve structure with a sealing air bag, which belongs to the field of ball valves and comprises a valve body, a sealing mechanism is arranged in the valve body, and connecting components are arranged at two ends of the valve body. By means of the sealing mechanism, the sealing air bag is located at the connecting position of the valve rod and the valve body in the using process, the sealing air bag can shield the top of the valve element, the inner wall of the valve body and the valve element in the long-term using process, extra sealing force is provided through the sealing air bag, and the sealing air bag can form a flexible sealing layer between sealing faces. The device can be automatically adjusted along with pressure change, so that the sealing effect is enhanced, liquid leakage caused by long-term use is avoided, and the device can be conveniently connected with an external pipeline through a first connecting pipe and a second connecting pipe during use by arranging a connecting assembly.

Description

Technical Field

[0001] This utility model relates to the field of ball valves, and more specifically, to a high-speed hard alloy ball valve structure with a sealing airbag. Background Technology

[0002] With the continuous advancement of industrialization, ball valves, as a fluid control device widely used in industries such as petroleum, natural gas, chemical, power, and metallurgy, play a crucial role in many fields due to their sealing performance, wear resistance, and high pressure resistance. However, existing ball valves still have the following shortcomings in use:

[0003] When traditional ball valves are exposed to high temperature, high pressure and corrosive media for a long time, the connection between the valve core and the valve cover is often corroded, which leads to liquid leakage from the valve stem and valve cover, making it difficult to meet the sealing requirements for long-term stable operation.

[0004] Therefore, we have made improvements and proposed a high-speed hard alloy ball valve structure with a sealing airbag. Utility Model Content

[0005] The purpose of this invention is to address the problem that ball valves, when exposed to high temperature, high pressure, and corrosive media for extended periods, often experience corrosion at the connection between the valve core and the valve cover, leading to liquid leakage from the valve stem and valve cover, thus failing to meet the sealing requirements for long-term stable operation.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0007] A high-speed hard alloy ball valve structure with a sealing airbag is used to improve the above-mentioned problems.

[0008] The specific details of this utility model are as follows:

[0009] Includes a valve body, the valve body having an internal sealing mechanism, and connecting components at both ends of the valve body;

[0010] The sealing mechanism includes a valve cover, a valve stem, a valve core, a throttle, and a sealing airbag. The valve cover is connected to the outer wall of the valve body. The valve stem is rotatably connected to the inside of the valve cover. The valve core is fixedly connected to the bottom of the valve stem. The throttle is bolted to the top of the valve stem. The sealing airbag is fixedly connected to the inner top wall of the valve body and fits tightly against the outer wall of the valve core.

[0011] As a preferred technical solution of this utility model, the connecting component includes a first connecting pipe and a second connecting pipe, which are respectively connected to both ends of the valve body.

[0012] As a preferred technical solution of this utility model, a first sealing ring and a second sealing ring are arranged opposite to each other inside the valve body, and the inner walls of the first sealing ring and the second sealing ring are tightly fitted with the outer wall of the valve core.

[0013] As a preferred technical solution of this utility model, a filling layer is provided on the inner wall of the valve cover. The filling layer is made of polytetrafluoroethylene, and the inner wall of the filling layer is tightly fitted to the outer wall of the valve stem.

[0014] As a preferred technical solution of this utility model, a palm protective sleeve is fitted onto the outer wall of one end of the throttle, and the palm protective sleeve is made of corrosion-resistant rubber.

[0015] As a preferred technical solution of this utility model, the valve body is made of high-speed hard alloy.

[0016] As a preferred technical solution of this utility model, the material of the sealing airbag is polytetrafluoroethylene.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] In the solution of this utility model:

[0019] 1. Through the sealing mechanism, the sealing airbag is located at the connection between the valve stem and the valve body during use. When used for a long time, the sealing airbag can shield the top of the valve core, the inner wall of the valve body, and the valve core. The sealing airbag provides additional sealing force and can form a flexible sealing layer between the sealing surfaces. It automatically adjusts with pressure changes, thereby enhancing the sealing effect and preventing liquid leakage due to long-term use.

[0020] 2. With the provided connection components, the device can be easily connected to external pipelines via the first and second connecting pipes during use. Attached Figure Description

[0021] Figure 1 A schematic diagram of the high-speed hard alloy ball valve with sealing airbag provided by this utility model;

[0022] Figure 2 Left view of the high-speed hard alloy ball valve structure with sealing airbag provided by this utility model;

[0023] Figure 3 The high-speed hard alloy ball valve structure with sealing airbag provided by this utility model Figure 2 A three-dimensional cross-sectional view at point AA;

[0024] Figure 4 The high-speed hard alloy ball valve structure with sealing airbag provided by this utility model Figure 3 Enlarged view of point A in the middle;

[0025] Figure 5 This is a schematic diagram of the structure of the valve core of the high-speed hard alloy ball valve with sealing airbag provided by this utility model.

[0026] The image shows:

[0027] 1. Valve body; 2. Sealing mechanism; 3. Connecting assembly; 4. First sealing ring; 5. Second sealing ring; 6. Filler layer; 7. Hand protective sleeve; 201. Valve cover; 202. Valve stem; 203. Valve core; 204. Throttle; 205. Sealing airbag; 301. First connecting pipe; 302. Second connecting pipe. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0029] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0030] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] like Figure 1-5 As shown, this embodiment proposes a high-speed hard alloy ball valve structure with a sealing airbag, including a valve body 1, a sealing mechanism 2 is provided inside the valve body 1, and connecting components 3 are provided at both ends of the valve body 1.

[0033] like Figure 3 , Figure 4 and Figure 5As shown, the sealing mechanism 2 includes a valve cover 201, a valve stem 202, a valve core 203, a handle 204, and a sealing airbag 205. The valve cover 201 is connected to the outer wall of the valve body 1. The valve stem 202 is rotatably connected to the inside of the valve cover 201. The valve core 203 is fixedly connected to the bottom of the valve stem 202. The handle 204 is bolted to the top of the valve stem 202. The sealing airbag 205 is fixedly connected to the inner top wall of the valve body 1 and fits tightly against the outer wall of the valve core 203. During use, the sealing airbag 205 provides additional sealing force. The sealing airbag 205 can form a flexible sealing layer between the sealing surfaces, which automatically adjusts with pressure changes, thereby enhancing the sealing effect. The sealing airbag 205 provides an elastic seal by inflating or filling with liquid. In this way, even if the sealing surfaces of the device are worn or deformed, the sealing airbag 205 can still compensate for these changes and maintain the sealing performance of the device.

[0034] like Figure 3 As shown, the connecting assembly 3 includes a first connecting pipe 301 and a second connecting pipe 302, which are respectively connected to both ends of the valve body 1. Threaded grooves are provided on the inner walls of both the first connecting pipe 301 and the second connecting pipe 302, allowing external pipes to be screwed into them for easy installation.

[0035] like Figure 3 and Figure 4 As shown, a first sealing ring 4 and a second sealing ring 5 are arranged opposite each other inside the valve body 1, and the inner walls of the first sealing ring 4 and the second sealing ring 5 are tightly fitted to the outer wall of the valve core 203. The first sealing ring 4 and the second sealing ring 5 can ensure the sealing between the valve body 1 and the valve core 203. When the device is closed, the first sealing ring 4 and the second sealing ring 5 will tightly wrap around both sides of the valve core 203, preventing the medium from leaking out from both sides of the valve body 1.

[0036] like Figure 4 As shown, a filler layer 6 is provided on the inner wall of the valve cover 201. The filler layer 6 is made of polytetrafluoroethylene (PTFE), and its inner wall is tightly fitted to the outer wall of the valve stem 202. During use, the PTFE filler layer 6 reduces friction between the valve stem 202 and the valve cover 201. PTFE also possesses excellent chemical stability, high-temperature resistance (up to 260°C), an extremely low coefficient of friction, and excellent corrosion resistance, preventing liquid leakage.

[0037] like Figure 1 As shown, a palm protector 7 is fitted onto the outer wall of one end of the throttle 204. The palm protector 7 is made of corrosion-resistant rubber. When the throttle 204 is rotated by hand, the palm protector 7 can prevent the throttle 204 from injuring the user's palm.

[0038] like Figure 1 As shown, the valve body 1 is made of high-speed cemented carbide. High-speed cemented carbide has a hardness close to that of diamond and can maintain its hardness and structural stability at high temperatures, which can significantly improve the service life of the valve body 1.

[0039] like Figure 4 As shown, the sealing airbag 205 is made of polytetrafluoroethylene (PTFE). The PTFE sealing airbag 205 ensures long-term stable sealing performance when handling corrosive, strong acid, and strong alkali chemical media.

[0040] Specifically, in use, the high-speed hard alloy ball valve structure with sealing bladder provides additional sealing force through the sealing bladder 205. The sealing bladder 205 can form a flexible sealing layer between the sealing surfaces, which automatically adjusts with pressure changes, thereby enhancing the sealing effect. The sealing bladder 205 provides an elastic seal by inflating or filling with liquid. In this way, even if the sealing surfaces of the device are worn or deformed, the sealing bladder 205 can still compensate for these changes and maintain the sealing performance of the device. Then, the pipe with external threads at one end is screwed into the first connecting pipe 301 and the second connecting pipe 302 for convenient installation. The first sealing ring 4 and the second sealing ring 5 can ensure the sealing performance between the valve body 1 and the valve core 203. When the device is closed, the first sealing ring 4 and the second sealing ring 5 will tightly wrap around both sides of the valve core 203, preventing the medium from leaking out from both sides of the valve body 1.

[0041] All technical features in this embodiment can be freely combined according to actual needs.

[0042] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A high speed cemented carbide ball valve construction with a sealing air bag, comprising a valve body (1), characterized in that, The inside of the valve body (1) is provided with a sealing mechanism (2), and the two ends of the valve body (1) are provided with connecting assemblies (3); The sealing mechanism (2) comprises a valve cover (201), a valve rod (202), a valve core (203), a handle (204) and a sealing air bag (205), the valve cover (201) is in communication and is arranged on the outer wall of the valve body (1), the valve rod (202) is rotatably connected to the inside of the valve cover (201), the valve core (203) is fixedly connected to the bottom of the valve rod (202), the handle (204) is bolted to the top of the valve rod (202), and the sealing air bag (205) is fixedly connected to the inner top wall of the valve body (1) and tightly abuts against the outer wall of the valve core (203).

2. The high speed cemented carbide ball valve structure with sealing air bag according to claim 1, characterized in that, The connecting assemblies (3) comprise first connecting pipes (301) and second connecting pipes (302), and the first connecting pipes (301) and the second connecting pipes (302) are respectively arranged in communication at the two ends of the valve body (1).

3. The high speed cemented carbide ball valve structure with sealing air bag according to claim 1, characterized in that, The inside of the valve body (1) is provided with first and second sealing rings (4) and (5) in a relative manner, and the inner walls of the first and second sealing rings (4) and (5) tightly abut against the outer wall of the valve core (203).

4. The high speed cemented carbide ball valve structure with sealing air bag according to claim 1, characterized in that, A filling layer (6) is arranged on the inner wall of the valve cover (201), the material of the filling layer (6) is polytetrafluoroethylene, and the inner wall of the filling layer (6) tightly abuts against the outer wall of the valve rod (202).

5. The high speed cemented carbide ball valve structure with sealing air bag according to claim 1, characterized in that, A palm protection sleeve (7) is sleeved on the outer wall of one end of the handle (204), and the material of the palm protection sleeve (7) is corrosion-resistant rubber.

6. The high speed cemented carbide ball valve structure with a sealing air bag according to claim 1, characterized in that, The material of the valve body (1) is high-speed hard alloy.

7. The high speed cemented carbide ball valve structure with sealing air bag according to claim 1, characterized in that, The material of the sealing air bag (205) is polytetrafluoroethylene.

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