Special valve

Abstract

The utility model provides a special valve, relates to the technical field of valves, and solves the technical problems in the prior art that more energy is consumed when a valve core is opened and closed, and the sealing performance is easily reduced due to serious abrasion after long-time use. The special valve comprises a valve body and a static valve element, the valve body is provided with a cylindrical movable valve element communicated with a pipeline, the movable valve element is connected with the valve body in a sliding mode, the static valve element is arranged on the side, away from the valve body, of the movable valve element, the center axis of the static valve element coincides with the center axis of the movable valve element, and the center axis of the static valve element coincides with the center axis of the movable valve element. The movable valve element can abut against the static valve element. Opening and closing of the valve are achieved in the mode that the cylindrical movable valve element and the cylindrical static valve element are separated and buckled, and the problems that the energy consumption of valve element opening and closing is large, and the sealing performance is reduced due to serious abrasion to the movable valve element are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a special valve. Background Art

[0002] Valves are control components in fluid conveying systems. Various valves are used on equipment in the chemical material production process, such as gate valves, knife valves, butterfly valves, etc., to control the flow of materials. Currently, the internal moving valve cores of these valves are all sheet-like structures, which cut off the material flow from the cross-sectional direction of the material flow through linear drive or rotational drive. In the process of cutting off the material flow, the surface of the moving valve core is directly impacted by the vertical action of the material flow direction. The direct impact force is large, resulting in more energy consumption when the moving valve core is switched on and off. In addition, the moving valve core is severely worn after long-term use, which can easily lead to reduced sealing. Summary of the invention

[0003] The purpose of the utility model is to provide a special valve, which solves the technical problems in the prior art that the valve core consumes a lot of energy when it is switched on and off, and the moving valve core is seriously worn out after long-term use, which easily leads to reduced sealing. The preferred technical solution among the many technical solutions provided by the utility model can produce many technical effects, which are described in detail below.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The special valve provided by the utility model comprises a valve body and a static valve core, wherein the valve body is provided with a cylindrical moving valve core connected with a pipeline, and the moving valve core is slidably connected with the valve body, and the static valve core is provided on a side of the moving valve core away from the valve body, and the central axis of the static valve core coincides with the central axis of the moving valve core;

[0006] The movable valve core includes a closed state and an open state. In the closed state, one end of the movable valve core away from the valve body is pressed against the static valve core; in the open state, the movable valve core is away from the static valve core.

[0007] Preferably, a flow guide portion is provided on the end surface of the static valve core facing the dynamic valve core, and the flow guide portion is a convex structure.

[0008] Preferably, the height of the guide portion gradually decreases from the central axis close to the static valve core to the edge direction.

[0009] Preferably, the guide portion is conical, the bottom of the guide portion completely covers the end surface of the static valve core facing the dynamic valve core, and the axis of the guide portion coincides with the center axis of the static valve core.

[0010] Preferably, the static valve core is a planar plate-shaped structure or an inwardly concave structure.

[0011] Preferably, a blocking portion is further included, wherein the blocking portion is arranged on the peripheral side wall of the static valve core, and one end of the movable valve core can be close to the blocking portion or tightly pressed against the blocking portion.

[0012] Preferably, the valve body comprises an outer cylinder wall and an inner cylinder wall which are sleeved together, a cylindrical accommodating chamber is formed between the outer cylinder wall and the inner cylinder wall, one end of the accommodating chamber is closed, and the movable valve core is slidably arranged at the other end.

[0013] Preferably, it further comprises a driving part, a bar hole along the axial direction of the valve body is provided on the outer cylinder wall, the driving part passes through the bar hole and is connected with the movable valve core, and the driving part can drive the movable valve core to move in the axial direction of the valve body.

[0014] Preferably, the driving part comprises a connecting plate and a driving source, one end of the connecting plate is connected to the moving valve core, and the other end is used for being driven by the driving source.

[0015] Preferably, it also includes a first sealing portion and a second sealing portion, wherein the first sealing portion is arranged in the bar hole and away from one end of the static valve core, the first sealing portion is pressed against the movable valve core, and the second sealing portion is arranged on the inner wall of the outer tube wall close to the static valve core and / or on the inner wall of the inner tube wall.

[0016] This application adopts the above technical solution, which has at least the following beneficial effects:

[0017] The special valve includes a valve body and a static valve core. The valve body is provided with a cylindrical moving valve core connected to the pipeline, and the moving valve core is slidably connected to the valve body. The moving valve core can slide relative to the valve body. The static valve core is arranged on the side of the moving valve core away from the valve body. The central axis of the static valve core coincides with the central axis of the moving valve core, and the moving valve core can be pressed against the static valve core. The moving valve core includes a closed state and an open state. In the closed state, the end of the moving valve core away from the valve body is pressed against the static valve core. In the open state, the moving valve core is away from the static valve core. The opening and closing of the valve is achieved by separating and engaging the cylindrical moving valve core and the fixed valve core. Compared with the method of directly driving the sheet-shaped moving valve core to directly cut off the material flow in the radial direction, this method can reduce energy consumption and also avoid the problem of the material flow vertically impacting the moving valve core to cause wear and tear on it, thereby affecting the sealing performance.

[0018] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the special valve provided by the embodiment of the utility model;

[0021] Figure 2 It is a schematic diagram of the cross-sectional structure of a special valve provided by an embodiment of the utility model;

[0022] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0023] Figure 4 yes Figure 2 The enlarged structural diagram of the middle part B;

[0024] Figure 5 It is a schematic diagram of the valve body structure provided by an embodiment of the utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the movable valve core provided by an embodiment of the utility model;

[0026] Figure 7 It is a schematic diagram of the static valve core structure of the conical guide part provided by the embodiment of the utility model;

[0027] Figure 8 It is a schematic diagram of the static valve core structure of the arc-convex flow guide portion provided by an embodiment of the utility model;

[0028] Fig. 9 It is a schematic diagram of the flat-plate-shaped static valve core structure provided by an embodiment of the utility model;

[0029] Fig.10 It is a schematic diagram of the concave static valve core structure provided by an embodiment of the utility model.

[0030] In the figure, 1 is the valve body; 2 is the static valve core; 3 is the dynamic valve core; 4 is the flow guide part; 5 is the blocking part; 6 is the outer cylinder wall; 7 is the inner cylinder wall; 8 is the accommodating chamber; 9 is the bar hole; 10 is the driving part; 11 is the connecting plate; 12 is the driving source; 13 is the first sealing part; 14 is the second sealing part. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0032] The specific embodiment of the utility model provides a special valve, combined with the attached Figure 1 and attached Figure 2 As shown, it mainly includes a valve body 1 and a static valve core 2.

[0033] The valve body 1 is provided with a cylindrical moving valve core 3 connected with the pipeline. The material transported in the pipeline can enter the moving valve core 3. The moving valve core 3 is slidably connected with the valve body 1 so that the moving valve core 3 can move. The static valve core 2 is arranged on the side of the moving valve core 3 away from the valve body 1. The central axis of the static valve core 2 coincides with the central axis of the moving valve core 3. After the moving valve core 3 moves, it can be pressed against the static valve core 2. When the moving valve core 3 is pressed against the static valve core 2, the moving valve core 3 can be closed, thereby realizing the closure of the special valve;

[0034] The moving valve core 3 of the special valve provided in the present application includes a closed state and an open state. In the closed state, the end of the moving valve core 3 away from the valve body 1 is pressed against the static valve core 2, and the static valve core 2 completely closes one end of the cylindrical moving valve core 3, so that the pipeline can be closed and the special valve is closed; in the open state, the moving valve core 3 is away from the static valve core 2, and the opening end of the moving valve core 3 is completely opened, and the special valve is opened.

[0035] The above-mentioned special valve adopts the separation and buckling method of the moving valve core 3 and the static valve core 2 to realize the opening and closing of the valve. When the moving valve core 3 is buckled onto the static valve core 2 and closed, the material can flow out from the peripheral gap between the moving valve core 3 and the static valve core 2, and will not produce local high pressure impact like traditional valves such as gate valves, knife valves, butterfly valves, etc. The energy consumption is relatively low, and it is not easy to cause serious wear to the local part of the moving valve core during long-term use, thereby ensuring the sealing of the special valve.

[0036] In another embodiment of the present application, a guide portion 4 is provided on the end surface of the static valve core 2 facing the dynamic valve core 3. The guide portion 4 is a raised structure. The guide portion 4 located on the static valve core 2 can separate the material when dealing with the material flow, play a guiding role, and reduce the impact on the static valve core 2.

[0037] In some embodiments, the height of the guide portion 4 gradually decreases from the central axis close to the static valve core 2 to the edge direction, thus forming a raised structure with a convex middle and low ends. The material is scattered in an umbrella shape at the guide portion 4, which can guide the material more evenly from the periphery.

[0038] In some embodiments, the guide portion 4 is conical, and the bottom of the guide portion 4 completely covers the end surface of the static valve core 2 facing the dynamic valve core 3. The axis of the guide portion 4 coincides with the center axis of the static valve core 2. In this way, the material can be dispersed to the greatest extent, so that the material is guided along the conical surface direction at the conical surface of the guide portion 4, which can further avoid the impact of the dispersed material on the dynamic valve core 3 and further reduce the wear of the material on the dynamic valve core 3.

[0039] In some embodiments, the combination Fig. 9 and attached Fig.10 The static valve core 2 can also be designed as a flat plate structure or a concave structure.

[0040] In some embodiments, a sealing portion 5 is provided on the peripheral side of the static valve core 2. When the dynamic valve core 3 is pressed against the static valve core 2, the sealing portion 5 seals the pressing point between the dynamic valve core 3 and the static valve core 2. The sealing portion 5 may be a sealing ring, and a sealing effect is achieved through the sealing portion 5.

[0041] In some embodiments, the valve body 1 includes an outer cylinder wall 6 and an inner cylinder wall 7 which are sleeved together, and a cylindrical accommodating cavity 8 is formed between the outer cylinder wall 6 and the inner cylinder wall 7. The movable valve core 3 is slidably arranged in the accommodating cavity 8. The accommodating cavity 8 at one end of the valve body 1 is closed. Figure 3 As shown, the top wall of the inner cylinder wall 7 can be placed on the outer cylinder wall 6 and can be connected by welding. The other end of the valve body 1 is open, and a part of the moving valve core 3 extends from the open end into the accommodating cavity 8. The moving valve core 3 can slide along the accommodating cavity 8. In this way, the double cylinder wall setting can limit the moving valve core 3 from both the inside and outside, play a fixed and limiting role, and the valve body 1 can be directly connected to the pipeline to play a role in circulating materials.

[0042] In some embodiments, a driving unit 10 is also provided. The driving unit 10 is used to connect and drive the moving valve core 3. A bar hole 9 is provided on the outer cylinder wall 6 along the axial direction of the valve body 1. The driving unit 10 passes through the bar hole 9 and is connected to the moving valve core 3. The driving unit 10 can drive the moving valve core 3 to move in the axial direction of the valve body 1. Specifically, the driving unit 10 may include a connecting plate 11 and a driving source 12. One end of the connecting plate 11 is connected to the moving valve core 3, and the other end is used to be driven by the driving source 12. By adopting the connecting plate 11, a larger connection portion can be provided between the moving valve core 3, so that the connection is more firm. The length of the connecting plate 11 in the length direction of the bar hole 9 is less than the length of the bar hole 9, so that the connecting plate 11 can move in the bar hole 9.

[0043] The driving source 12 in the present application may be manually driven, electrically driven, hydraulically driven, or pneumatically driven.

[0044] For example, when driven manually, the driving part 10 can be a connecting rod or a connecting plate, which passes through the bar hole 9 and is connected to the moving valve core 3. A handle can be provided on the connecting rod or the connecting plate to facilitate manual grasping to apply external force.

[0045] For example, when electric, hydraulic or pneumatic drive is used, it can be implemented by using a linear motor, a hydraulic cylinder or a pneumatic cylinder respectively.

[0046] It should be noted that the driving source 12 in the present application may also be other structures capable of realizing linear driving, in order to realize linear driving of the movable valve core 3 .

[0047] In some embodiments, a first sealing portion 13 and a second sealing portion 14 are further included. The first sealing portion 13 is arranged in the bar hole 9 and away from one end of the static valve core 2. The first sealing portion 13 presses against the moving valve core 3. Since the bar hole 9 is an open hole, external contaminants may adhere to the outer wall of the moving valve core 3, so that they may be carried to the accommodating chamber 8 during the movement of the moving valve core 3. Long-term operation may affect the function of the special valve. Therefore, the first sealing portion 13 is used to scrape the outer wall of the moving valve core 3 to prevent dirt from entering the accommodating chamber 8. The first sealing portion 13 may be a rubber block; the second sealing portion 14 is arranged on the inner wall of the outer cylinder wall 6 and / or the inner wall of the inner cylinder wall 7 close to the static valve core 2. By arranging the second sealing portion 14 on the inner wall of one or both of the outer cylinder wall 6 and the inner cylinder wall 7, the outer wall of the moving valve core 3 is scraped to prevent the moving valve core 3 from carrying dirt into the accommodating chamber 8. The second sealing portion 14 may be a rubber sealing ring.

[0048] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", "some examples", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0049] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A special valve, characterized in that: It comprises a valve body and a static valve core, wherein the valve body is provided with a cylindrical moving valve core which is communicated with a pipeline, and the moving valve core is slidably connected with the valve body, the static valve core is provided on a side of the moving valve core away from the valve body, the central axis of the static valve core coincides with the central axis of the moving valve core, and the moving valve core can be pressed against the static valve core; The movable valve core includes a closed state and an open state. In the closed state, one end of the movable valve core away from the valve body is pressed against the static valve core; in the open state, the movable valve core is away from the static valve core. A flow guide portion is arranged on the end surface of the static valve core facing the dynamic valve core, and the flow guide portion is a convex structure.

2. The special valve according to claim 1, characterized in that: The height of the guide portion gradually decreases from the central axis close to the static valve core to the edge direction.

3. The special valve according to claim 1, characterized in that: The guide portion is conical, the bottom of the guide portion completely covers the end surface of the static valve core facing the dynamic valve core, and the axis of the guide portion coincides with the center axis of the static valve core.

4. The special valve according to claim 1, characterized in that: The static valve core is a planar plate-shaped structure or an inwardly concave structure.

5. The special valve according to any one of claims 1 to 4, characterized in that: It also includes a blocking portion, which is arranged on the peripheral side wall of the static valve core, and one end of the dynamic valve core can be close to the blocking portion or tightly abut against the blocking portion.

6. The special valve according to any one of claims 1 to 4, characterized in that: The valve body comprises an outer cylinder wall and an inner cylinder wall which are sleeved together, and a cylindrical accommodating cavity is formed between the outer cylinder wall and the inner cylinder wall. One end of the accommodating cavity is closed, and the movable valve core is slidably arranged at the other end.

7. The special valve according to claim 6, characterized in that: It also includes a driving part. A bar hole along the axial direction of the valve body is arranged on the outer cylinder wall. The driving part passes through the bar hole and is connected with the movable valve core. The driving part can drive the movable valve core to move in the axial direction of the valve body.

8. The special valve according to claim 7, characterized in that: The driving part includes a connecting plate and a driving source. One end of the connecting plate is connected to the moving valve core, and the other end is used for being driven by the driving source.

9. The special valve according to claim 7 or 8, characterized in that: It also includes a first sealing portion and a second sealing portion, wherein the first sealing portion is arranged in the bar hole and away from one end of the static valve core, the first sealing portion is pressed against the movable valve core, and the second sealing portion is arranged on the inner wall of the outer tube wall close to the static valve core and / or on the inner wall of the inner tube wall.

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