Multi-stage sealing high pressure rotary valve

Abstract

The utility model discloses a multi-stage sealed high-pressure rotary valve, comprising a valve body, an inlet short pipe, a first outlet short pipe, a second outlet short pipe and a valve core, the valve core is provided with a rotating shaft and is installed in the valve body through the rotating shaft, the rotating shaft is sleeved with a first sealing ring, the inlet short pipe, the first outlet short pipe and the second outlet short pipe are directly provided with bolts and connected with the valve body through the bolts; the utility model has reasonable structural design and is easy to use, and can improve the sealing performance between the valve body and each connecting pipe by arranging multiple layers of sealing, thereby ensuring that the internal pressure of the rotary valve is always maintained within a certain pressure value range to avoid pressure leakage.

Description

Technical Field

[0001] The utility model relates to the field of rotary valves, in particular to a multi-stage sealing high-pressure rotary valve. Background Art

[0002] A rotary valve usually has an inlet short pipe and multiple outlet short pipes connected to the valve body so that materials can be transported to different outlet short pipes by rotating the valve core. However, a traditional rotary valve has only a single sealing gasket for sealing at the connection between the valve body and the inlet short pipe and the outlet short pipe, resulting in poor sealing at the connection between the valve body and the inlet short pipe and the outlet short pipe, so improvement is still needed. Utility Model Content

[0003] In order to solve the above-mentioned problems, the utility model provides a multi-stage sealed high-pressure rotary valve, including a valve body, an inlet short pipe, a first outlet short pipe, a second outlet short pipe and a valve core, the valve core is provided with a rotating shaft and is installed in the valve body through the rotating shaft, the rotating shaft is sleeved with a first sealing ring, the inlet short pipe, the first outlet short pipe and the second outlet short pipe are directly provided with bolts and connected with the valve body through the bolts, the front ends of the inlet short pipe, the first outlet short pipe and the second outlet short pipe are sleeved with a second sealing ring, the cross-section of the second sealing ring is set to a Z-shaped structure, a pressure ring is set on the outside of the second sealing ring, a notch is opened on the pressure ring, and a third sealing ring is embedded in the notch.

[0004] Preferably, the cross section of the first sealing ring is set to a T-shaped structure, a convex ring is provided on the inner wall surface of the first sealing ring and the convex ring is embedded on the rotating shaft, and the first sealing ring is a partially hollow structure.

[0005] Preferably, the lower half of the second sealing ring is sandwiched between the inlet short pipe, the first outlet short pipe, the second outlet short pipe and the valve core.

[0006] Preferably, a fourth sealing ring is embedded on the rear end surfaces of the inlet short pipe, the first outlet short pipe and the second outlet short pipe, and a plurality of hollow convex rings are provided on the fourth sealing ring.

[0007] Preferably, a resisting sheet is provided at the bottom of the second sealing ring.

[0008] Preferably, the cross section of the third sealing ring is configured as an oblong circular structure.

[0009] The beneficial effects of the utility model are as follows: the utility model has reasonable structural design and is easy to use. By setting up multi-level seals, the sealing between the valve body and each connecting pipe can be improved, thereby ensuring that the internal pressure of the rotary valve is always maintained within a certain pressure value range to avoid pressure leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the AA-direction cross-sectional structure of the utility model;

[0013] Figure 3 This utility model Figure 1 The local structure of Figure 1 ;

[0014] Figure 4 This utility model Figure 1 The local structure of Figure 2 ;

[0015] Figure 5 This utility model Figure 2 Schematic diagram of the local structure;

[0016] In the figure: 1. inlet short pipe; 2. first outlet short pipe; 3. second outlet short pipe; 4. valve body; 5. valve core; 6. rotating shaft; 7. first sealing ring; 8. second sealing ring; 9. pressure ring; 10. third sealing ring; 11. fourth sealing ring. DETAILED DESCRIPTION

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

[0018] Any feature of this specification, unless otherwise specified, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise specified, each feature is only an example of a series of equivalent or similar features.

[0019] like Figure 1 , 2, 3, 4, 5 show a multi-stage sealed high-pressure rotary valve, comprising a valve body 4, an inlet short pipe 1, a first outlet short pipe 2, a second outlet short pipe 3 and a valve core 5, the valve core 5 is provided with a rotating shaft 6 and is installed in the valve body 4 through the rotating shaft 6, the rotating shaft 6 is sleeved with a first sealing ring 7, the inlet short pipe 1, the first outlet short pipe 2 and the second outlet short pipe 3 are directly provided with bolts and connected with the valve body 4 through the bolts, the front ends of the inlet short pipe 1, the first outlet short pipe 2 and the second outlet short pipe 3 are sleeved with a second sealing ring 8, the cross-section of the second sealing ring 8 is set as a Z-shaped structure, the outer side of the second sealing ring 8 is provided with a pressing ring 9, the pressing ring 9 is provided with a notch, and a third sealing ring 10 is embedded in the notch.

[0020] The cross section of the first sealing ring 7 is set to a T-shaped structure. A convex ring is set on the inner wall surface of the first sealing ring 7 and the convex ring is embedded on the rotating shaft 6. The first sealing ring 7 is a partially hollow structure.

[0021] The lower half of the second sealing ring 8 is sandwiched between the inlet short pipe 1 , the first outlet short pipe 2 , the second outlet short pipe 3 and the valve core 5 .

[0022] A fourth sealing ring 11 is embedded on the rear end surfaces of the inlet short pipe 1, the first outlet short pipe 2 and the second outlet short pipe 3, and a plurality of hollow convex rings are arranged on the fourth sealing ring 11.

[0023] A resisting sheet 12 is disposed at the bottom of the second sealing ring 8 .

[0024] The cross section of the third sealing ring 10 is configured as an oblong circular structure.

[0025] During use, the setting of the first sealing ring 7 can form an effective seal between the rotating shaft 6 and the valve body 4; the cross-section of the first sealing ring 7 is set to a T-shaped structure, and a convex ring is provided on the inner wall surface of the first sealing ring 7 and the convex ring is embedded on the rotating shaft 6, so that the first sealing ring 7 can be more firmly installed on the rotating shaft 7; the first sealing ring 7 is a partially hollow structure, which can make the first sealing ring 7 have good stretchability, so that the first sealing ring 7 can be squeezed and extended to both sides during the sealing process, so that the first sealing ring 7 can be better sealed.

[0026] The setting of the pressure ring 9 can facilitate pressing and fixing the second sealing ring 8; the setting of the second sealing ring 8 can seal the inlet short pipe 1, the first outlet short pipe 2, the second outlet short pipe 3 and the valve core 5; the second sealing ring 8 is set as a Z-shaped structure to improve the sealing performance of the second sealing ring 8; the setting of the third sealing ring 10 can form a secondary seal between the inlet short pipe 1, the first outlet short pipe 2, the second outlet short pipe 3 and the valve core 5.

[0027] The setting of the fourth sealing ring 11 can make the rear end faces of the inlet short pipe 1, the first outlet short pipe 2 and the second outlet short pipe 3 have good sealing performance; the fourth sealing ring 11 is provided with multiple hollow convex rings, which can form multi-stage sealing on the rear end faces of the inlet short pipe 1, the first outlet short pipe 2 and the second outlet short pipe 3, thereby improving the sealing performance of the fourth sealing ring 11.

[0028] The beneficial effects of the utility model are as follows: the utility model has reasonable structural design and is easy to use. By setting up multi-level seals, the sealing between the valve body and each connecting pipe can be improved, thereby ensuring that the internal pressure of the rotary valve is always maintained within a certain pressure value range to avoid pressure leakage.

[0029] The present invention is not limited to the above-mentioned specific implementation modes, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A multi-stage sealed high-pressure rotary valve, characterized in that: The valve body (4) comprises a valve body (4), an inlet short pipe (1), a first outlet short pipe (2), a second outlet short pipe (3) and a valve core (5); the valve core (5) is provided with a rotating shaft (6) and is installed in the valve body (4) through the rotating shaft (6); a first sealing ring (7) is sleeved on the rotating shaft (6); the inlet short pipe (1), the first outlet short pipe (2) and the second outlet short pipe (3) are directly provided with bolts and connected to the valve body (4) through the bolts; the front ends of the inlet short pipe (1), the first outlet short pipe (2) and the second outlet short pipe (3) are sleeved with a second sealing ring (8); the cross section of the second sealing ring (8) is arranged in a Z-shaped structure; a pressure ring (9) is arranged on the outside of the second sealing ring (8); a notch is opened on the pressure ring (9), and a third sealing ring (10) is embedded in the notch.

2. A multi-stage sealing high-pressure rotary valve according to claim 1, characterized in that: The cross section of the first sealing ring (7) is arranged in a T-shaped structure, a convex ring is arranged on the inner wall surface of the first sealing ring (7) and the convex ring is embedded in the rotating shaft (6), and the first sealing ring (7) is a partially hollow structure.

3. A multi-stage sealing high-pressure rotary valve according to claim 1, characterized in that: The lower half of the second sealing ring (8) is sandwiched between the inlet short pipe (1), the first outlet short pipe (2), the second outlet short pipe (3) and the valve core (5).

4. A multi-stage sealing high-pressure rotary valve according to claim 1, characterized in that: A fourth sealing ring (11) is embedded on the rear end surfaces of the inlet short pipe (1), the first outlet short pipe (2) and the second outlet short pipe (3), and a plurality of hollow convex rings are arranged on the fourth sealing ring (11).

5. The multi-stage sealing high-pressure rotary valve according to claim 1, characterized in that: A resisting sheet (12) is provided at the bottom of the second sealing ring (8).

6. The multi-stage sealing high-pressure rotary valve according to claim 1, characterized in that: The cross section of the third sealing ring (10) is arranged to be an elongated round structure.

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