Floating type sliding plate valve

Abstract

The utility model relates to the technical field of sliding plate valves, in particular to a floating type sliding plate valve, which solves the problem that the sealing performance of the valve is affected due to the fact that medium particles are easy to corrode the valve. The floating type sliding plate valve comprises a valve body, the valve body is provided with a medium flow channel used for medium circulation, a valve plate used for cutting off or communicating with the medium flow channel is arranged in the valve body, a cavity structure used for cutting off the medium flow channel is arranged in the middle of the medium flow channel, and a first step groove surrounding the medium flow channel is formed in one side of the cavity structure. A second step groove surrounding the medium flow channel is formed in the other side opposite to the first step groove; an annular first valve seat is embedded in the first step groove; an annular second valve seat is embedded in the second step groove, and the first valve seat can slide in the depth direction of the second step groove; a valve plate is arranged between the first valve seat and the second valve seat, the valve plate is in sealing fit with the first valve seat and the second valve seat at the same time, and the second valve seat has a floating gap between the valve plate and the bottom of the second step groove.

Description

Technical Field

[0001] This utility model relates to the field of sliding plate valve technology, and in particular to a floating sliding plate valve. Background Technology

[0002] A slide valve has a valve plate inside the valve body that is perpendicular to the direction of medium flow. It is a special valve used to open and close pipelines in conveying systems for solid materials and solid-liquid mixtures.

[0003] In applications involving the transport of solid-liquid mixed media, particulate matter in the media can easily corrode valves, affecting their sealing performance. Utility Model Content

[0004] The purpose of this invention is to propose a floating slide valve that can be applied to conveying systems for solid-liquid mixtures, thereby solving the problem that particulate matter in the medium can easily corrode the valve and affect its sealing performance.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A floating slide valve includes a valve body with a medium flow channel for medium circulation. Inside the valve body is a valve plate for cutting off or connecting the medium flow channel. A cavity structure is provided in the middle of the medium flow channel to disconnect it. One side of the cavity structure has a first stepped groove surrounding the medium flow channel, and the opposite side has a second stepped groove surrounding the medium flow channel. A first annular valve seat is embedded in the first stepped groove, and a second annular valve seat is embedded in the second stepped groove. The first valve seat is slidable along the depth direction of the second stepped groove. The valve plate is disposed between the first and second valve seats, and the valve plate simultaneously seals with both the first and second valve seats. The second valve seat has a floating gap between the valve plate and the bottom of the second stepped groove.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme: an elastic device is provided on the second step groove to act on the second valve seat, causing the second valve seat to maintain a tendency to move towards the valve plate.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme: the second valve seat is provided with a plurality of mounting holes around the side near the bottom of the second stepped groove, and the elastic device includes a spring inserted into the mounting holes, the spring supporting the bottom of the second stepped groove.

[0009] Based on the above scheme and as a preferred embodiment of the above scheme: a third step groove is provided on the side of the second step groove near the medium flow channel, which surrounds the medium flow channel; an extension portion is provided on the second valve seat that extends into the third step groove; and a spring pad is provided between the end of the extension portion and the bottom of the third step groove.

[0010] Based on the above scheme and as a preferred embodiment of the above scheme: a first groove is continuously arranged around the extension, and a first sealing ring is provided in the first groove to support the extension and the side wall of the third stepped groove; a second groove is continuously arranged around the outer periphery of the second valve seat, and a second sealing ring is provided in the second groove to support the second valve seat and the side wall of the second stepped groove.

[0011] Based on the above scheme and as a preferred embodiment of the above scheme: the end face of the first valve seat near the valve plate is provided with a third groove surrounding the medium flow channel, and a third sealing ring supporting the first valve seat and the valve plate is provided in the third groove; the end face of the second valve seat near the valve plate is provided with a fourth groove surrounding the medium flow channel, and a fourth sealing ring supporting the second valve seat and the valve plate is provided in the fourth groove.

[0012] This utility model has the following beneficial effects:

[0013] The floating slide valve of this invention can be applied to conveying systems for solid-liquid mixtures, solving the problem that particulate matter in the medium can easily corrode the valve and affect its sealing performance.

[0014] Specifically, when this floating sliding plate valve is installed, the medium flow channel is connected to the conveying system, and the pipeline is opened and closed (cut off or connect) by controlling the sliding plate. During the medium conveying process, the medium enters the medium flow channel and flows from the direction of the second valve seat towards the direction of the first valve seat. Due to the floating gap of the second valve seat, the erosion and wear between the second valve seat and the valve plate caused by the medium can be pushed towards the valve plate under the action of the high-pressure medium, forming a closed tendency of the second valve seat fitting against the valve plate, thereby compensating for the erosion damage between the second valve seat and the valve plate caused by the medium and ensuring the sealing effect.

[0015] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the floating slide valve of this utility model;

[0017] Figure 2 This is a partial schematic diagram of the floating slide valve of this utility model. Detailed Implementation

[0018] The technical solutions in 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 embodiments of this utility model, and not all embodiments.

[0019] See Figure 1-2 This utility model discloses a floating slide valve. The floating slide valve includes a valve body 100, a medium flow channel 101 for medium flow, and a valve plate 200 inside the valve body 100 for cutting off or connecting the medium flow channel 101. It is worth noting that in this floating slide valve, a cavity structure 102 is provided in the middle of the medium flow channel 101 to disconnect the medium flow channel 101. A first stepped groove 103 is provided on one side of the cavity structure 102 to surround the medium flow channel 101, and a second stepped groove 104 is provided on the other side opposite to the first stepped groove 103 to surround the medium flow channel 101. An annular first valve seat 300 is embedded in the first stepped groove 103. An annular second valve seat 400 is embedded in the second stepped groove 104. The first valve seat 300 can slide in the depth direction of the second stepped groove 104. A valve plate 200 is provided between the first valve seat 300 and the second valve seat 400. The valve plate 200 is in sealing cooperation with both the first valve seat 300 and the second valve seat 400. The second valve seat 400 has a floating gap between the valve plate 200 and the bottom of the second stepped groove 104.

[0020] The floating slide valve of this invention can be applied to conveying systems for solid-liquid mixtures.

[0021] Specifically, when this floating slide valve is installed, the medium flow channel 101 is connected to the conveying system, and the pipeline is opened and closed (cut off or connect) by controlling the slide. During the medium conveying process, the medium enters the medium flow channel 101 and flows from the direction of the second valve seat 400 towards the direction of the first valve seat 300. Due to the floating gap of the second valve seat 400, the erosion and wear between the second valve seat 400 and the valve plate 200 caused by the medium can push the second valve seat 400 closer to the valve plate 200 under the action of the high-pressure medium, thus maintaining the sealing tendency of the second valve seat 400 against the valve plate 200. This compensates for the erosion damage between the second valve seat 400 and the valve plate 200 caused by the medium, ensuring the sealing effect.

[0022] In order to ensure that the second valve seat 400 can move towards the valve plate 200 effectively, an elastic device is provided on the second step groove 104 to act on the second valve seat 400, and the second valve seat 400 is pushed towards the valve plate 200 by the elastic device.

[0023] Furthermore, the second valve seat 400 is provided with a plurality of mounting holes 401 around the side near the bottom of the second stepped groove 104. The elastic device includes a spring 500 inserted in the mounting hole 401. The spring 500 supports the bottom of the second stepped groove 104 and pushes the second valve seat 400 toward the valve plate 200.

[0024] The second stepped groove 104 has a third stepped groove 105 surrounding the medium flow channel 101 on the side near the medium flow channel 101. The second valve seat 400 has an extension 402 extending into the third stepped groove 105, and a spring pad 600 is provided between the end of the extension 402 and the bottom of the third stepped groove 105. Figure 2 As can be seen, the cooperation between the extension 402 and the third step groove 105 reduces the exposure of the gap between the second step groove 104 and the second valve seat 400 caused by the floating requirement of the second valve seat 400. This prevents media particles from entering the gap between the second step groove 104 and the second valve seat 400, which would cause the floating design of the second valve seat 400 to fail. Furthermore, with the spring pad 600 filling the gap between the end of the extension 402 and the bottom of the third step groove 105, the risk of media particles entering the gap between the second valve seat 400 and the second step groove 104 reserved for the floating requirement of the second valve seat 400 is further reduced.

[0025] Furthermore, based on the application of the spring pad 600, to better prevent media particles from entering the gap between the second valve seat 400 and the second stepped groove 104 reserved for the floating requirement of the second valve seat 400 (e.g. Figure 2 To mitigate the risk of spring 500 being installed in the area, a first groove 403 is continuously arranged around the extension 402, and a first sealing ring 404 is provided in the first groove 403, which is supported between the extension 402 and the side wall of the third stepped groove 105; a second groove 405 is continuously arranged around the outer periphery of the second valve seat 400, and a second sealing ring 406 is provided in the second groove 405, which is supported between the second valve seat 400 and the side wall of the second stepped groove 104.

[0026] To ensure a relative sealing effect between the valve plate 200 and the first valve seat 300 and the second valve seat 400, the end face of the first valve seat 300 near the valve plate 200 is provided with a third groove 301 surrounding the medium flow channel 101, and a third sealing ring 302 supporting the first valve seat 300 and the valve plate 200 is provided in the third groove 301; the end face of the second valve seat 400 near the valve plate 200 is provided with a fourth groove 407 surrounding the medium flow channel 101, and a fourth sealing ring 408 supporting the second valve seat 400 and the valve plate 200 is provided in the fourth groove 407.

[0027] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A floating slide valve, comprising a valve body (100), wherein the valve body (100) is provided with a medium flow channel (101) for medium flow, and a valve plate (200) is provided inside the valve body (100) for cutting off or connecting the medium flow channel (101), characterized in that, A cavity structure (102) is provided in the middle of the medium flow channel (101) to disconnect the medium flow channel (101). A first stepped groove (103) is provided on one side of the cavity structure (102) surrounding the medium flow channel (101), and a second stepped groove (104) is provided on the other side opposite to the first stepped groove (103) surrounding the medium flow channel (101). An annular first valve seat (300) is embedded in the first stepped groove (103); An annular second valve seat (400) is embedded in the second stepped groove (104), and the first valve seat (300) can slide in the depth direction of the second stepped groove (104); The valve plate (200) is disposed between the first valve seat (300) and the second valve seat (400). The valve plate (200) is in sealing fit with both the first valve seat (300) and the second valve seat (400). The second valve seat (400) has a floating gap between the valve plate (200) and the bottom of the second stepped groove (104).

2. The floating slide valve according to claim 1, characterized in that, An elastic device is provided on the second stepped groove (104) to act on the second valve seat (400), causing the second valve seat (400) to maintain a tendency to move toward the valve plate (200).

3. The floating slide valve according to claim 2, characterized in that, The second valve seat (400) has a plurality of mounting holes (401) arranged around the side near the bottom of the second stepped groove (104), and the elastic device includes a spring (500) inserted in the mounting hole (401) and the spring (500) supports the bottom of the second stepped groove (104).

4. The floating slide valve according to claim 1, characterized in that, The second stepped groove (104) is provided with a third stepped groove (105) surrounding the medium flow channel (101) on the side near the medium flow channel (101). The second valve seat (400) is provided with an extension (402) extending into the third stepped groove (105). A spring pad (600) is provided between the end of the extension (402) and the bottom of the third stepped groove (105).

5. The floating slide valve according to claim 4, characterized in that, A first groove (403) is continuously arranged around the extension (402), and a first sealing ring (404) is provided in the first groove (403) and supported between the extension (402) and the side wall of the third stepped groove (105); a second groove (405) is continuously arranged around the outer periphery of the second valve seat (400), and a second sealing ring (406) is provided in the second groove (405) and supported between the second valve seat (400) and the side wall of the second stepped groove (104).

6. The floating slide valve according to claim 1, characterized in that, The first valve seat (300) has a third groove (301) surrounding the medium flow channel (101) on its end face near the valve plate (200), and a third sealing ring (302) supporting the first valve seat (300) and the valve plate (200) is provided in the third groove (301); the second valve seat (400) has a fourth groove (407) surrounding the medium flow channel (101) on its end face near the valve plate (200), and a fourth sealing ring (408) supporting the second valve seat (400) and the valve plate (200) is provided in the fourth groove (407).

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