Improved single seat valve seat

Abstract

The utility model discloses an improved single seat type valve seat, including valve seat body, the two end faces of valve seat body all recess inward and form the sealing portion of annular structure, be equipped with the annular groove on the inner ring surface of valve seat body, install the adjusting shell in the annular groove, be equipped with the fixed ring in the opening of adjusting shell, the fixed ring outside surface installs on the inner wall surface of annular groove, and the adjusting channel of annular structure is formed between fixed ring and adjusting shell, and the inner ring of fixed ring is connected with the adjusting ring, and the outer ring of adjusting ring projects and forms the extension, and the extension is inserted into the adjusting channel, the utility model discloses simple structure, and both ends of valve seat body are equipped with the sealing portion, after the sealing portion of one end wears, through the overturning of valve seat body, can use the sealing portion of another end, increases the service life, and can push the adjusting shell outward through the adjusting ring, and the valve seat body is extruded outward by adjusting shell, to offset the thickness that valve seat body was worn before, ensure the sealing property of valve seat body subsequent use.

Description

Technical Field

[0001] This utility model relates to the field of valve seat technology, specifically to an improved single-seat valve seat. Background Technology

[0002] A single-seat valve refers to a control valve structure in which only one valve core and one valve seat work together. It is the most common and basic type of valve internals in industrial process control.

[0003] Currently, valve seats have a simple structure and can generally only be used on one side. After wear, they cannot be flipped over for continued use, so the valve seats must be replaced, resulting in a significant reduction in service life. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide an improved single-seat valve seat, which can be sealed at both ends of the valve seat body. The valve seat body can be opened outward by the adjusting ring to offset the wear of the valve seat body, thereby solving the problems mentioned in the background art.

[0005] This utility model is achieved through the following technical solution: an improved single-seat valve seat, including a valve seat body, both end faces of the valve seat body are recessed inward to form an annular sealing part, an annular groove is provided on the inner ring surface of the valve seat body, an adjusting shell is installed in the annular groove, a fixing ring is provided in the opening of the adjusting shell, the outer side of the fixing ring is installed on the inner wall surface of the annular groove, an annular adjusting channel is formed between the fixing ring and the adjusting shell, an adjusting ring is threadedly connected in the inner ring of the fixing ring, and the outer ring of the adjusting ring protrudes to form an extension, the extension being inserted into the adjusting channel.

[0006] As a preferred technical solution, the curvature of the sealing part matches the curvature of the outer ring of the valve ball, and the shapes of the grooves of the sealing parts at both ends are the same.

[0007] As a preferred technical solution, an operating ring is provided at the center of the adjusting ring, and an operating port with a rectangular structure is provided at the center of the operating ring. Multiple connecting rods are installed between the operating ring and the adjusting ring.

[0008] As a preferred technical solution, the outer ring surface of the fixed ring is provided with multiple positioning grooves in an annular structure, and the inner ring surface of the adjusting shell protrudes to form positioning parts at the positioning grooves, and the positioning parts are slidably disposed in the positioning grooves.

[0009] As a preferred technical solution, the adjusting shell, fixing ring, operating ring, adjusting ring and connecting rod are all made of stainless steel.

[0010] As a preferred technical solution, the upper and lower end faces of the adjusting ring do not protrude beyond the upper and lower end faces of the valve seat body.

[0011] As a preferred technical solution, the outer ring of the adjusting ring is provided with an external thread, and the inner ring of the fixed ring is provided with an internal thread. The adjusting ring is connected to the fixed ring by the engagement of the external thread with the internal thread.

[0012] The beneficial effects of this utility model are: the utility model has a simple structure, and both ends of the valve seat body are provided with sealing parts. After the sealing part at one end is worn, the sealing part at the other end can be used by flipping the valve seat body, which increases the service life. The adjusting ring can push the adjusting shell outward, and the adjusting shell can squeeze the valve seat body outward to offset the thickness of the valve seat body that was previously worn, so as to ensure the sealing performance of the valve seat body in subsequent use. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a bottom view of the present invention; Figure 3 This is a schematic diagram of the structure of this utility model after removing the valve seat body; Figure 4 This is a cross-sectional view of the present invention.

[0015] The components are: 1. Valve seat body; 2. Sealing part; 3. Adjusting ring; 4. Connecting rod; 5. Operating ring; 6. Operating port; 7. Adjusting shell; 8. Fixing ring; 9. Positioning part; 10. Extension part. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0017] All features disclosed in this specification, or steps in all methods or processes disclosed herein, may be combined in any way, except for mutually exclusive features and / or steps.

[0018] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0019] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an improved single-seat valve seat of this utility model includes a valve seat body 1. Both end faces of the valve seat body 1 are recessed inward to form an annular sealing part 2. An annular groove is provided on the inner ring surface of the valve seat body 1. An adjusting shell 7 is installed in the annular groove. A fixing ring 8 is provided in the opening of the adjusting shell 7. The outer side of the fixing ring 8 is installed on the inner wall surface of the annular groove. An annular adjusting channel is formed between the fixing ring 8 and the adjusting shell 7. An adjusting ring 3 is threadedly connected to the inner ring of the fixing ring 8. The outer ring of the adjusting ring 3 protrudes to form an extension 10, which is inserted into the adjusting channel.

[0020] In this embodiment, the curvature of the sealing part 2 matches the curvature of the outer ring of the valve ball, and the shapes of the grooves of the sealing part 2 at both ends are the same.

[0021] In this embodiment, an operating ring 5 is provided at the center of the adjusting ring 3, and an operating port 6 with a rectangular structure is provided at the center of the operating ring 5. Multiple connecting rods 4 are installed between the operating ring 5 and the adjusting ring 3.

[0022] In this embodiment, the outer ring surface of the fixing ring 8 is provided with a plurality of positioning grooves in an annular structure, and the inner ring surface of the adjusting shell 7 protrudes to form positioning parts 9 at the positioning grooves, and the positioning parts 9 are all slidably disposed in the positioning grooves. The positioning groove of the outer ring of the fixed ring cooperates with the positioning part of the inner ring of the adjusting shell, so that the adjusting shell can only move radially and cannot rotate, thus ensuring the stability and reliability of the adjustment process.

[0023] In this embodiment, the adjusting shell 7, the fixing ring 8, the operating ring 5, the adjusting ring 3, and the connecting rod 4 are all made of stainless steel.

[0024] In this embodiment, the upper and lower end faces of the adjusting ring 3 do not protrude beyond the upper and lower end faces of the valve seat body 1, thus avoiding contact with the valve ball.

[0025] In this embodiment, the outer ring surface of the adjusting ring 3 is provided with an external thread, and the inner ring surface of the fixing ring 8 is provided with an internal thread. The adjusting ring 3 is connected to the fixing ring 8 by the external thread engaging with the internal thread of the fixing ring 8. The axial movement of the adjusting ring can be smoothly driven by the threaded connection.

[0026] Working principle: Both end faces of the valve seat body are provided with an inwardly recessed annular sealing part. The arc shape of the sealing part matches the shape of the outer ring of the valve ball, so that both ends of the valve seat body can be used for sealing. When the sealing part at one end wears out due to long-term use, the valve seat body can be flipped over as a whole, so that the sealing part at the other end can cooperate with the valve ball, thereby continuing to achieve the sealing function and significantly extending the service life of the valve seat. In addition, an annular groove is provided on the inner ring of the valve seat body, and an adjusting shell and a fixing ring are installed in the annular groove. An annular adjusting channel is formed between the fixing ring and the adjusting shell. The adjusting ring is connected to the fixing ring by a thread. The outer ring of the adjusting ring has an extension that is inserted into the adjusting channel. When the sealing effect decreases due to wear, a tool can be inserted into the operating port of the operating ring to rotate the operating ring. The operating ring drives the adjusting ring to rotate via a connecting rod. Since the adjusting ring and the fixed ring are connected by threads, rotating the adjusting ring will cause it to move axially, thereby pushing the extension part to move in the adjusting channel. The extension part pushes the adjusting shell outward, causing the adjusting shell to expand outward, thereby opening the valve seat body outward. This action can compensate for the wear of the valve seat body, restore the sealing fit between it and the valve ball, and ensure that the valve continues to have good sealing performance.

[0027] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. An improved single-seat valve seat, characterized in that: The valve includes a valve seat body (1), both end faces of which are recessed inward to form an annular sealing part (2). An annular groove is provided on the inner ring surface of the valve seat body (1), and an adjusting shell (7) is installed in the annular groove. A fixing ring (8) is provided in the opening of the adjusting shell (7). The outer side of the fixing ring (8) is installed on the inner wall surface of the annular groove. An annular adjusting channel is formed between the fixing ring (8) and the adjusting shell (7). An adjusting ring (3) is threadedly connected to the inner ring of the fixing ring (8). The outer ring of the adjusting ring (3) protrudes to form an extension (10), which is inserted into the adjusting channel.

2. The improved single-seat valve seat according to claim 1, characterized in that: The curvature of the sealing part (2) matches the curvature of the outer ring of the valve ball, and the grooves of the sealing parts (2) at both ends have the same shape.

3. The improved single-seat valve seat according to claim 1, characterized in that: An operating ring (5) is provided at the center of the adjusting ring (3), and a rectangular operating port (6) is provided at the center of the operating ring (5). Multiple connecting rods (4) are installed between the operating ring (5) and the adjusting ring (3).

4. The improved single-seat valve seat according to claim 1, characterized in that: The outer ring of the fixing ring (8) has a ring structure with multiple positioning grooves. The inner ring of the adjusting shell (7) protrudes to form positioning parts (9) opposite to the positioning grooves. The positioning parts (9) are slidably set in the positioning grooves.

5. The improved single-seat valve seat according to claim 3, characterized in that: The adjusting shell (7), the fixing ring (8), the operating ring (5), the adjusting ring (3), and the connecting rod (4) are all made of stainless steel.

6. The improved single-seat valve seat according to claim 1, characterized in that: The upper and lower end faces of the adjusting ring (3) do not protrude from the upper and lower end faces of the valve seat body (1).

7. The improved single-seat valve seat according to claim 1, characterized in that: The outer ring of the adjusting ring (3) is provided with an external thread, and the inner ring of the fixing ring (8) is provided with an internal thread. The adjusting ring (3) is connected to the fixing ring (8) by the external thread engaging with the internal thread of the fixing ring (8).

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