Corrosion-resistant ball valve

Abstract

The utility model discloses a corrosion-resistant ball valve which comprises a valve body, a valve seat is arranged in the valve body, a valve ball is arranged on the valve seat, a through hole is formed in the valve ball in the axial direction in the reverse direction, and a channel matched with the through hole to form medium circulation is formed in the valve body. A valve rod extending into the valve body is arranged at the top end of the valve body, and the valve rod is fixedly connected with the valve ball; corrosion-resistant layers are arranged on the inner surface of the valve seat, the inner surface of the channel, the inner surface of the through hole and the outer surface of the valve ball, a valve bottom cover is arranged at the bottom of the valve body, and the top of the valve body is fixedly connected with a valve top cover through a sealing piece. According to the corrosion-resistant ball valve, the corrosion-resistant layers are arranged on the inner surface of the valve seat, the inner surface of the channel, the inner surface of the through hole and the outer surface of the valve ball, corrosion of media such as strong acid, strong alkali and saline solutions can be effectively resisted, the service life of the ball valve is prolonged, and the corrosion-resistant ball valve is suitable for corrosive environments such as chemical engineering and ocean engineering.

Description

Technical Field

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

[0002] Ball valves are widely used in chemical, petroleum, and marine engineering fields due to their advantages such as low fluid resistance, fast opening and closing speed, and reliable sealing performance. However, the media in these scenarios (such as strong acids, strong alkalis, and salt solutions) are often highly corrosive, and the parts of the valve that come into contact with the media are extremely susceptible to corrosion and leakage, thereby endangering personal safety and the safety of the surrounding environment. Therefore, valves are required to have excellent sealing performance and corrosion resistance to prevent leakage of harmful media.

[0003] Based on the above, this utility model proposes a corrosion-resistant ball valve, which can effectively solve the above problems. Utility Model Content

[0004] This utility model addresses the shortcomings of the existing technology by providing a corrosion-resistant ball valve.

[0005] This utility model is achieved through the following technical solution:

[0006] A corrosion-resistant ball valve includes a valve body, a valve seat inside the valve body, a valve ball on the valve seat, a through hole in the valve ball in the opposite direction along the axial direction, and a channel for medium flow formed by the through hole inside the valve body; a valve stem extending into the valve body is provided at the top of the valve body, and the valve stem is fixedly connected to the valve ball; a corrosion-resistant layer is provided on the inner surface of the valve seat, the inner surface of the channel, the inner surface of the through hole, and the outer surface of the valve ball; a valve bottom cover is provided at the bottom of the valve body, and a valve top cover is fixedly connected to the top of the valve body by a sealing element.

[0007] According to the above technical solution, as a further preferred technical solution, sealing rings are provided between the valve body and the valve bottom cover, between the valve body and the sealing element, and between the valve top cover and the sealing element.

[0008] According to the above technical solution, as a further preferred technical solution, a rotating handle is fixedly connected to the top of the valve stem.

[0009] According to the above technical solution, as a further preferred technical solution, a packing, a metal ring and a sealing sleeve are arranged sequentially from bottom to top between the valve stem and the valve top cover.

[0010] According to the above technical solution, as a further preferred technical solution, the corrosion-resistant layer is made of polytetrafluoroethylene material.

[0011] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0012] This utility model provides a corrosion-resistant ball valve, which can effectively resist the erosion of strong acids, strong alkalis, salt solutions and other media by setting corrosion-resistant layers on the inner surface of the valve seat, the inner surface of the channel, the inner surface of the through hole and the outer surface of the valve ball, thus extending the service life of the ball valve. It is suitable for corrosive environments such as chemical industry and marine engineering. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model. Detailed Implementation

[0014] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0015] A corrosion-resistant ball valve includes a valve body 1, a valve seat 2 inside the valve body 1, a valve ball 3 on the valve seat 2, a through hole 301 in the axial direction of the valve ball 3, and a channel 101 inside the valve body 1 that cooperates with the through hole 301 to form a medium flow channel; a valve stem 4 extending into the valve body 1 is provided at the top of the valve body 1, and the valve stem 4 is fixedly connected to the valve ball 3; a corrosion-resistant layer 5 is provided on the inner surface of the valve seat 2, the inner surface of the channel 101, the inner surface of the through hole 301, and the outer surface of the valve ball 3; a valve bottom cover 6 is provided at the bottom of the valve body 1; and a valve top cover 8 is fixedly connected to the top of the valve body 1 by a sealing element 7.

[0016] This invention provides a corrosion-resistant layer 5 on the inner surface of the valve seat 2, the inner surface of the channel 101, the inner surface of the through hole 301, and the outer surface of the valve ball 3. This effectively resists the erosion of media such as strong acids, strong alkalis, and salt solutions, extending the service life of the ball valve. It is suitable for corrosive environments such as chemical and marine engineering.

[0017] Furthermore, in another embodiment, sealing rings 9 are provided between the valve body 1 and the valve bottom cover 6, between the valve body 1 and the seal 7, and between the valve top cover 8 and the seal 7.

[0018] Furthermore, in another embodiment, a rotating handle 10 is fixedly connected to the top of the valve stem 4.

[0019] Furthermore, in another embodiment, a packing 11, a metal ring 12, and a sealing sleeve 13 are arranged sequentially from bottom to top between the valve stem 4 and the valve top cover 8.

[0020] Furthermore, in another embodiment, the corrosion-resistant layer 5 is made of polytetrafluoroethylene.

[0021] By incorporating a corrosion-resistant layer made of polytetrafluoroethylene (PTFE), which exhibits excellent chemical inertness, the internal components of the ball valve are effectively protected from corrosion.

[0022] Based on the description and drawings of this utility model, those skilled in the art can easily manufacture or use a corrosion-resistant ball valve of this utility model, and can achieve the positive effects described in this utility model.

[0023] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0024] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A corrosion-resistant ball valve, characterized in that: The valve body (1) includes a valve seat (2) inside the valve body (1), a valve ball (3) on the valve seat (2), a through hole (301) in the opposite direction along the axial direction of the valve ball (3), and a channel (101) for medium flow that cooperates with the through hole (301) inside the valve body (1). A valve stem (4) extending into the valve body (1) is provided at the top of the valve body (1), and the valve stem (4) is fixedly connected to the valve ball (3). A corrosion-resistant layer (5) is provided on the inner surface of the valve seat (2), the inner surface of the channel (101), the inner surface of the through hole (301), and the outer surface of the valve ball (3). A valve bottom cover (6) is provided at the bottom of the valve body (1), and a valve top cover (8) is fixedly connected to the top of the valve body (1) through a sealing element (7).

2. The corrosion-resistant ball valve according to claim 1, characterized in that: A sealing ring (9) is provided between the valve body (1) and the valve bottom cover (6), between the valve body (1) and the sealing element (7), and between the valve top cover (8) and the sealing element (7).

3. The corrosion-resistant ball valve according to claim 1, characterized in that: A rotating handle (10) is fixedly connected to the top of the valve stem (4).

4. A corrosion-resistant ball valve according to claim 2, characterized in that: The valve stem (4) and the valve top cover (8) are provided with packing (11), metal ring (12) and sealing sleeve (13) from bottom to top.

5. A corrosion-resistant ball valve according to claim 1, characterized in that: The corrosion-resistant layer (5) is made of polytetrafluoroethylene.

Images