Butterfly valve for powder conveying pipeline during battery production

Abstract

The utility model provides a butterfly valve for a powder conveying pipeline during battery production, which is characterized in that a valve shaft is rotatably sleeved on a valve body, a valve plate is fixedly sleeved on the periphery of the valve shaft, the valve plate is positioned in the valve body, a valve seat is fixedly sleeved on the inner ring of the valve body, the periphery of the valve plate can be hermetically connected to the inner ring of the valve seat, and the valve seat comprises a coating part; the periphery of the wrapping part covers the inner ring of the valve body, the two ends of the wrapping part are connected to the two ends of the valve body through fixing parts respectively, a sealing part is arranged on the wrapping part and is of a hollow cylindrical structure, a shaft hole is formed in the valve body, the periphery of the sealing part is arranged in the shaft hole in a sleeved mode, and the periphery of the valve shaft is connected to the inner ring of the sealing part in a sealed mode. According to the butterfly valve for the powder conveying pipeline during battery production, the inner ring of the valve body is completely wrapped by the wrapping part, so that the inner ring of the valve body is isolated from powder containing lithium or phosphorus and the like conveyed by the pipeline, the valve body made of metal is prevented from polluting the powder, the types of applicable materials for producing the valve body are expanded, and the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of valves, in particular to a butterfly valve used for a powder conveying pipeline during battery production. Background Art

[0002] In the production of battery materials in the new energy field, phosphorus- or lithium-containing powders are usually blown to a predetermined production location by blowing air, and the pipeline is opened and closed by operating a butterfly valve in the blowing pipeline. The main material of the butterfly valve body in the prior art is usually cast steel. In the above-mentioned powder blowing pipeline, the exposed cast steel material will cause the powder to be contaminated. The method of isolating the cast steel from contact with the powder by spraying a coating on the surface of the cast steel is costly and still has the risk of pollution. Summary of the invention

[0003] In view of this, the utility model aims to propose a butterfly valve for a powder delivery pipeline during battery production, so as to solve the problem in the prior art that the valve body material is exposed in the battery powder pipeline, which easily causes the powder to be contaminated.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A butterfly valve for a powder conveying pipeline during battery production comprises a valve body, a valve seat, a valve shaft and a valve plate. The valve shaft is rotatably sleeved on the valve body, and the valve plate is fixedly sleeved on the periphery of the valve shaft. The valve plate is located in the valve body, and the inner ring of the valve body is fixedly sleeved on the valve seat. The periphery of the valve plate can be sealed and connected to the inner ring of the valve seat. The valve seat comprises a covering portion, the periphery of the covering portion covers the inner ring of the valve body, and the two ends of the covering portion are respectively connected to the two ends of the valve body through a fixing portion. A sealing portion is arranged on the covering portion, and the sealing portion is a hollow cylindrical structure. An axial hole is arranged on the valve body, the periphery of the sealing portion is sleeved into the axial hole, and the periphery of the valve shaft is sealed and connected to the inner ring of the sealing portion.

[0006] Furthermore, the covering portion, the fixing portion and the sealing portion are an integrated structure, and the covering portion, the fixing portion and the sealing portion are all made of rubber.

[0007] Furthermore, the fixing part is a circular ring structure, the inner ring of the fixing part is fixedly connected to one end of the covering part, a first annular clamping platform is arranged at one end of the fixing part, and a first annular clamping groove is arranged at one end of the valve seat, and the outer periphery of the first annular clamping platform is clamped into the first annular clamping groove.

[0008] Furthermore, a sealing rubber ring is arranged on the inner ring of the sealing portion, and the periphery of the sealing rubber ring is sealingly connected to the periphery of the valve shaft.

[0009] Furthermore, the sealing rubber ring and the sealing part are an integral structure.

[0010] Furthermore, a second annular groove is provided in the inner ring of the valve body, and a clamping portion is provided on the periphery of the covering portion, and the periphery of the clamping portion is clamped into the second annular groove.

[0011] Furthermore, the clamping portion and the covering portion are an integral structure.

[0012] Furthermore, the clamping portion includes two second annular clamping platforms, and the two second annular clamping platforms are arranged parallel to each other, one side of each second annular clamping platform abuts against a side wall of the second annular clamping groove, and an elastic space of the covering portion is formed between the other side of each second annular clamping platform, the periphery of the covering portion and the second annular clamping groove.

[0013] Compared with the prior art, the butterfly valve for powder delivery pipeline in battery production described in the utility model has the following beneficial effects:

[0014] (1) The butterfly valve used in the powder conveying pipeline during battery production described in the utility model completely covers the inner ring of the valve body through the covering portion, so that the inner ring of the valve body is isolated from the lithium-containing or phosphorus-containing powder conveyed in the pipeline, preventing the metal valve body from contaminating the powder, expanding the types of materials applicable to the production of the valve body and reducing the production cost.

[0015] (2) The butterfly valve of the utility model used for the powder conveying pipeline in battery production has an elastic space used for the compressed concave part of the covering portion to prevent the outer periphery of the valve plate from rigidly contacting the inner ring of the covering portion, which would easily cause damage to the parts and reduce the service life. The concave covering portion has rebound elasticity, which is used for sealing between the inner ring of the covering portion and the valve plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the structure of a butterfly valve used in a powder delivery pipeline for battery production according to an embodiment of the utility model;

[0018] Figure 2 It is a cross-sectional schematic diagram of a butterfly valve used in a powder delivery pipeline in battery production according to an embodiment of the utility model;

[0019] Figure 3 It is a vertical cross-sectional schematic diagram of a butterfly valve used in a powder delivery pipeline in battery production according to an embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the valve seat according to an embodiment of the utility model;

[0021] Figure 5 It is a cross-sectional schematic diagram of the valve seat described in the embodiment of the utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the valve body according to an embodiment of the utility model;

[0023] Figure 7 It is a cross-sectional schematic diagram of the valve body described in the embodiment of the utility model.

[0024] Description of reference numerals:

[0025] 1-valve body; 11-first annular groove; 12-second annular groove; 13-axial hole; 2-valve seat; 21-coating portion; 22-fixing portion; 23-sealing portion; 24-first annular clamping platform; 25-sealing rubber ring; 26-second annular clamping platform; 27-elastic space; 3-valve shaft; 4-valve plate. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0027] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0029] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0030] like Figure 1-Figure 7 As shown, a butterfly valve for a powder delivery pipeline in battery production comprises a valve body 1, a valve seat 2, a valve shaft 3 and a valve plate 4. The valve shaft 3 is rotatably sleeved on the valve body 1, and the valve plate 4 is fixedly sleeved on the periphery of the valve shaft 3. The valve plate 4 is located in the valve body 1, and the inner ring of the valve body 1 is fixedly sleeved on the valve seat 2. The periphery of the valve plate 4 can be sealed and connected to the inner ring of the valve seat 2. The valve seat 2 comprises a covering portion 21, the outer periphery of the covering portion 21 covers the inner ring of the valve body 1, and the two ends of the covering portion 21 are respectively connected to the inner ring of the valve body 1 through a fixing portion 22. At both ends, a sealing portion 23 is provided on the covering portion 21, and the sealing portion 23 is a hollow cylindrical structure. An axial hole 13 is provided on the valve body 1, and the outer periphery of the sealing portion 23 is sleeved into the axial hole 13, and the outer periphery of the valve shaft 3 is sealed and connected to the inner ring of the sealing portion 23. The inner ring of the valve body 1 is completely covered by the covering portion 21, so that the inner ring of the valve body 1 is isolated from lithium-containing or phosphorus-containing powders transported by the pipeline, thereby preventing the metal valve body 1 from contaminating the powders, expanding the types of applicable materials for producing the valve body 1, and reducing the production cost.

[0031] The fixing part 22 is a circular ring structure, the inner ring of the fixing part 22 is fixedly connected to one end of the covering part 21, a first annular clamping platform 24 is arranged at one end of the fixing part 22, and a first annular clamping groove 11 is arranged at one end of the valve seat 2, the periphery of the first annular clamping platform 24 is clamped into the first annular clamping groove 11, and the two first annular clamping platforms 24 are used to fix the relative position of the covering part 21, so that the staff can install the covering part 21 in place, and then fix the relative position between the fixing part 22 and the valve body 1 by clamping the valve body 1 and the pipeline, and the fixing part 22 can act as a seal of this part to prevent leakage problems in the interface between the valve body 1 and the pipeline. A sealing rubber ring 25 is arranged at the inner ring of the sealing part 23, and the periphery of the sealing rubber ring 25 is sealed and connected to the periphery of the valve shaft 3 to ensure the sealing performance of this part.

[0032] A second annular groove 12 is provided on the inner ring of the valve body 1, and a clamping portion is provided on the periphery of the covering portion 21, and the periphery of the clamping portion is clamped into the second annular groove 12. The cooperation between the second annular groove 12 and the clamping portion is to prevent the displacement of the covering portion 21 caused by the friction between the valve plate 4 and the inner ring of the covering portion 21 when opening and closing, thereby improving the sealing performance between the valve plate 4 and the inner ring of the covering portion 21.

[0033] like Figure 4As shown, the clamping portion includes two second annular clamping platforms 26, and the two second annular clamping platforms 26 are arranged parallel to each other, one side of each second annular clamping platform 26 abuts against a side wall of the second annular clamping groove 12, and an elastic space 27 of the covering portion 21 is formed between the other side of each second annular clamping platform 26, the periphery of the covering portion 21 and the second annular clamping groove 12, and the elastic space 27 is used for the compressed concave of this part of the covering portion 21 to prevent the periphery of the valve plate 4 from rigidly contacting the inner ring of the covering portion 21, which is easy to cause damage to parts and reduce the service life. The concave covering portion 21 has rebound elasticity, and this part of the elasticity is used for sealing between the inner ring of the covering portion 21 and the valve plate 4. In the pipeline for blowing and feeding powder, the medium pressure in the pipeline is not large, and the above sealing performance meets the working conditions.

[0034] In order to reduce production costs and assembly costs, the covering portion 21, the fixing portion 22, the sealing portion 23, the first annular clamping platform 24, the sealing rubber ring 25 and the second annular clamping platform 26 are an integrated structure, and the material is rubber. Setting it as an integrated structure can also improve the assembly requirements between various parts and improve assembly efficiency.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A butterfly valve for a powder delivery pipeline in battery production, comprising a valve body (1), a valve seat (2), a valve shaft (3) and a valve plate (4), wherein the valve shaft (3) is rotatably sleeved on the valve body (1), and the valve plate (4) is fixedly sleeved on the periphery of the valve shaft (3), the valve plate (4) is located in the valve body (1), and the inner ring of the valve body (1) is fixedly sleeved on the valve seat (2), and the outer ring of the valve plate (4) can be sealed and connected to the inner ring of the valve seat (2), and is characterized in that: The valve seat (2) comprises a covering portion (21), the outer periphery of the covering portion (21) covers the inner ring of the valve body (1), and the two ends of the covering portion (21) are respectively connected to the two ends of the valve body (1) through a fixing portion (22), a sealing portion (23) is arranged on the covering portion (21), and the sealing portion (23) is a hollow cylindrical structure, an axial hole (13) is arranged on the valve body (1), the outer periphery of the sealing portion (23) is sleeved into the axial hole (13), and the outer periphery of the valve shaft (3) is sealingly connected to the inner ring of the sealing portion (23).

2. The butterfly valve for powder delivery pipeline in battery production according to claim 1, characterized in that: The fixing portion (22) is a circular ring structure, the inner ring of the fixing portion (22) is fixedly connected to one end of the covering portion (21), a first annular clamping platform (24) is provided at one end of the fixing portion (22), and a first annular clamping groove (11) is provided at one end of the valve seat (2), and the outer periphery of the first annular clamping platform (24) is clamped into the first annular clamping groove (11).

3. The butterfly valve for powder delivery pipeline in battery production according to claim 1 is characterized in that: The inner ring of the sealing portion (23) is provided with a sealing rubber ring (25), and the outer periphery of the sealing rubber ring (25) is sealingly connected to the outer periphery of the valve shaft (3).

4. The butterfly valve for powder delivery pipeline in battery production according to claim 1, characterized in that: The inner ring of the valve body (1) is provided with a second annular clamping groove (12), and the periphery of the covering portion (21) is provided with a clamping portion, the periphery of the clamping portion being clamped into the second annular clamping groove (12).

5. The butterfly valve for powder delivery pipeline in battery production according to claim 4, characterized in that: The clamping portion comprises two second annular clamping platforms (26), and the two second annular clamping platforms (26) are arranged parallel to each other, one side of each second annular clamping platform (26) abuts against a side wall of the second annular clamping groove (12), and an elastic space (27) of the covering portion (21) is formed between the other side of each second annular clamping platform (26), the periphery of the covering portion (21) and the second annular clamping groove (12).

6. The butterfly valve for powder delivery pipeline in battery production according to claim 1, characterized in that: The covering portion (21), the fixing portion (22) and the sealing portion (23) are an integrated structure, and the covering portion (21), the fixing portion (22) and the sealing portion (23) are all made of rubber material.

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