Dust cap and stop valve having the same

Abstract

A dust cap and a stop valve having the same. Here, the dust cap is used to fit onto the top of the valve body (10) of the stop valve, and includes a cylindrical body (20) and a top plate (30) that is provided to cover one end of the cylindrical body (20) so as to surround and form a dustproof chamber (40) together with the cylindrical body (20), and at least a part of the cylindrical body (20) protrudes from the inside to the outside to form a protruding part (21), and the protruding part (21) extends along the central axis of the cylindrical body (20). This effectively solves the problem that dust caps in the prior art are poor in versatility.

Description

[Technical field]

[0001] The present application relates to the technical field of valves, and in particular to a dust cap and a stop valve having the same. [Background technology]

[0002] Currently, the dust cap of the stop valve is attached to the connecting pipe of the stop valve and is not only used to prevent dust from entering the pipe, but also to prevent the pipe mouth of the connecting pipe from being impacted and deformed.

[0003] However, the dust caps in the prior art are not versatile and can only be fitted to the pipe openings of connecting pipes of the same size. Summary of the Invention

[0004] A main object of the present application is to provide a dust cap and a stop valve having the same, which solves the problem that the dust caps in the prior art are poor in versatility.

[0005] In order to achieve the above-mentioned object, based on one aspect of the present application, there is provided a dust cap for fitting onto the top of a valve body of a stop valve, the dust cap including a cylindrical body and a top plate that is placed over one end of the cylindrical body so as to surround and form a dustproof chamber together with the cylindrical body, wherein at least a portion of the cylindrical body protrudes from the inside to the outside to form a protrusion, and the protrusion extends along the central axis of the cylindrical body.

[0006] When the technical aspect of the present application is applied, the protrusion is formed by at least a part of the cylinder protruding from the inside to the outside, and extends along the central axis of the cylinder, so that in the process of fitting the dust cap to the top of the valve body, if the size of the fitted part is larger than the size of the dustproof chamber, the above-mentioned configuration of the protrusion can deform the non-protruding part of the cylinder so as to expand outward, so that the deformed dust cap can be fitted to the valve body, and further, the problem that the dust cap in the prior art is poor in versatility is solved, and the versatility of the dust cap is improved so that the dust cap can protect valve bodies of different sizes.

[0007] Preferably, the length of the projection corresponds to the length of the barrel.

[0008] Preferably, the orthogonal projection of the protrusion on the top plate lies within the top plate.

[0009] Preferably, the protrusion is one of an arc-shaped structure, a V-shaped structure, and a U-shaped structure.

[0010] Preferably, there is one or more protrusions, and the plurality of protrusions are provided at intervals along the circumferential direction of the cylindrical body.

[0011] Preferably, the cylinder includes a plurality of arc-shaped plate segments spaced apart along the circumferential direction of the cylinder, with two adjacent arc-shaped plate segments connected via a protrusion, and each arc-shaped plate segment is inclined with respect to a direction S extending from the top plate toward the cylinder.

[0012] Preferably, the inner diameter of the dustproof chamber gradually increases in a direction away from the top plate.

[0013] Preferably, the width W of the protrusion is 1 mm or more and 5 mm or less, or the inner surfaces of the multiple arc-shaped plate segments are formed by surrounding a predetermined ring, the outer surface of the protrusion and the predetermined ring have a predetermined distance D, the predetermined distance D being 0.5 mm or more and 3 mm or less, or the width W of the protrusion is 1 mm or more and 5 mm or less, the inner surfaces of the multiple arc-shaped plate segments are formed by surrounding a predetermined ring, the outer surface of the protrusion and the predetermined ring have a predetermined distance D, the predetermined distance D being 0.5 mm or more and 3 mm or less.

[0014] Preferably, a convex rib is provided on the inner surface of the arc-shaped plate segment, and the extending direction of the convex rib and the extending direction of the cylindrical body are aligned with each other.

[0015] In accordance with another aspect of the present application, a stop valve is provided, comprising a valve body, a valve stem and a dust cap, the valve stem being movably mounted within the valve body and the dust cap being fitted to the top of the valve body, wherein the dust cap is the dust cap described above. [Brief description of the drawings]

[0016] The drawings in the specification that form a part of this application are intended to provide a further understanding of the application, and the schematic examples and their explanations are intended to interpret the application and are not intended to unduly limit the application.

[0017] [Figure 1] 1 shows a schematic three-dimensional configuration diagram of an embodiment of a dust cap according to the present application. [Diagram 2] 2 is a schematic diagram showing the three-dimensional configuration of the dust cap of FIG. 1 from a different angle. [Diagram 3] 2 shows a cross-sectional view of the dust cap of FIG. 1; [Figure 4] FIG. 2 shows a side view of the dust cap of FIG. 1. [Diagram 5] 1 shows a schematic three-dimensional configuration diagram of an embodiment of a stop valve according to the present application. [Figure 6] 6 shows a cross-sectional view of the stop valve of FIG. 5.

[0018] Here, the above drawings include the following reference numbers: 10 valve body, 20 cylinder, 21 protrusion, 22 arc-shaped plate segment, 30 top plate, 40 dustproof chamber, 50 valve stem, 60 dust cap. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] It should be noted that, unless contradictory, the embodiments and features in the embodiments in the present application can be combined with each other. The present application will be described in detail below in conjunction with the embodiments with reference to the drawings.

[0020] Unless otherwise explained, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0021] In this application, unless otherwise stated, directional terms such as "up, down" used are generally relative to the direction shown in the drawings or relative to the plumb, vertical or gravitational direction. Similarly, for ease of understanding and explanation, "left, right" are generally relative to the left, right as shown in the drawings, and "inside, outside" refer to the inside, outside of each member's own profile, but the above directional terms are not intended to be limiting of this application.

[0022] To solve the problem that the dust cap in the prior art is not versatile, the present application provides a dust cap and a stop valve having the same.

[0023] 1 to 6, the dust cap is used to fit onto the top of the valve body 10 of the stop valve, and includes a cylindrical body 20 and a top plate 30. The top plate 30 is provided to cover one end of the cylindrical body 20 so as to surround and form a dustproof chamber 40 together with the cylindrical body 20. Here, at least a part of the cylindrical body 20 protrudes from the inside to the outside to form a protruding portion 21, and the protruding portion 21 extends along the central axis of the cylindrical body 20.

[0024] When the technical aspect of this embodiment is applied, the protrusion 21 is formed by at least a part of the cylinder 20 protruding from the inside to the outside, and extends along the central axis of the cylinder 20. As a result, in the process of fitting the dust cap to the top of the valve body 10, if the size of the part to be fitted is larger than the size of the dustproof chamber 40, the above-mentioned configuration of the protrusion 21 can deform the non-protruding part of the cylinder 20 so as to expand outward, so that the deformed dust cap can be fitted to the valve body 10, and further, the problem that the dust cap in the conventional technology is poor in versatility is solved, and the versatility of the dust cap is improved, so that the dust cap can protect valve bodies 10 of different sizes.

[0025] In this embodiment, the above configuration can improve the contraction performance of the dust cap, and further expand the application range of the dust cap, giving the dust cap a dustproof effect and at the same time the ability to deform, so that it can be adapted to stop valves of different sizes. Here, the radial deformation amount of the dust cap is improved by 10% to 50%.

[0026] In this embodiment, the length of the protrusion 21 is the same as the length of the cylinder 20. This increases the deformation area of ​​the cylinder 20 along the length of the cylinder 20, and further expands the application range of the dust cap so that the dust cap can protect stop valves of different sizes. At the same time, this configuration makes the structure of the protrusion 21 simpler, easier to process and realize, and reduces the processing cost and difficulty of the dust cap.

[0027] In this embodiment, the orthogonal projection of the protrusion 21 on the top plate 30 is located inside the top plate 30. As a result, the above configuration not only prevents the protrusion 21 from protruding beyond the top plate 30 along the radial direction of the dust cap, which would increase the space occupied by the dust cap, but also prevents the protrusion 21 from causing structural interference with other components and affecting the attachment and detachment of the dust cap.

[0028] Optionally, the protrusion 21 is one of an arc-shaped structure, a V-shaped structure, and a U-shaped structure, so that the above configuration not only makes the structure of the protrusion 21 more diverse to meet different usage requirements and working conditions, but also improves the flexibility of the worker in processing the protrusion 21.

[0029] In this embodiment, the protrusion 21 has an arc-shaped structure, which not only further avoids stress concentration on the protrusion 21 and affecting the service life of the dust cap, but also makes the structure of the protrusion 21 simpler, easier to process and realize, and reduces the processing cost and difficulty of the dust cap.

[0030] Alternatively, the protrusion 21 may be one or more, and the multiple protrusions 21 are spaced apart along the circumferential direction of the cylindrical body 20. Thus, the above configuration not only makes the selection of the number of the protrusions 21 more flexible to meet different usage requirements and working conditions, but also improves the flexibility of the workers in processing the protrusions 21.

[0031] In this embodiment, there are four protrusions 21, and the four protrusions 21 are evenly arranged along the circumferential direction of the cylindrical body 20. It should be noted that the number of the protrusions 21 is not limited thereto and can be adjusted according to the working conditions and the usage requirements. Optionally, the protrusions 21 are two, three, five, six, or more.

[0032] Alternatively, the cylindrical body 20 includes a plurality of arc-shaped plate segments 22 spaced apart along the circumferential direction of the cylindrical body 20, and two adjacent arc-shaped plate segments 22 are connected via a protrusion 21. Here, each arc-shaped plate segment 22 is inclined with respect to the direction S from the top plate 30 toward the cylindrical body 20. As shown in Figs. 1 to 4, the cylindrical body 20 includes four arc-shaped plate segments 22 spaced apart along the circumferential direction of the cylindrical body 20, and two adjacent arc-shaped plate segments 22 are connected via one protrusion 21. Specifically, there are four arc-shaped plate segments 22 and four protrusions 21, so that the structure of the dust cap is simpler, and processing and realization are easier, and the processing cost of the dust cap is reduced, while the deformation of the dust cap is more uniform and consistent, and the versatility of the dust cap is improved.

[0033] It should be noted that the number of the arc-shaped plate segments 22 is not limited thereto and can be adjusted according to the working conditions and the usage requirements. Optionally, the arc-shaped plate segments 22 are two, three, five, six or more.

[0034] In this embodiment, the protrusion 21 and the arc-shaped plate segment 22 are integrally molded, so that the structure of the dust cap is simpler, and it is easier to process and realize. This reduces the processing cost and processing difficulty of the dust cap while improving the structural strength of the dust cap and extending the service life of the dust cap.

[0035] Specifically, the protrusions 21 and the arc-shaped plate segments 22 are connected to each other in a smooth transition manner, so as to avoid stress concentration on the cylinder 20 and affecting the structural strength and service life of the dust cover. At the same time, the central axis of each protrusion 21 and the central axis of the cylinder 20 are arranged parallel to each other.

[0036] In this embodiment, the inner diameter of the dustproof chamber 40 gradually increases in the direction away from the top plate 30. As a result, the central axis of each arc-shaped plate segment 22 is inclined with respect to the central axis of the cylindrical body 20, and the size of the dustproof chamber gradually increases along the direction S. This not only makes it easier for the worker to fit the dust cap to the valve body 10, but also makes it easier for the worker to remove the dust cap from the valve body 10, reducing the difficulty of the worker in attaching and removing the dust cap.

[0037] Optionally, the width W of the protrusion 21 is 1 mm or more and 5 mm or less. Thus, the above configuration not only improves the structural strength of the protrusion 21 and extends the service life of the dust cap, but also allows the arc-shaped plate segment 22 to have a certain deformation amount so that the dust cap can be fitted to valve bodies 10 of different sizes.

[0038] In this embodiment, the width W of the protrusion 21 is 3 mm. It should be noted that the value of the width W of the protrusion 21 is not limited thereto and can be adjusted according to the working conditions and the usage requirements. Optionally, the width W of the protrusion 21 is 1.5 mm, 2.0 mm, 2.5 mm, 3.5 mm, 4.0 mm, or 4.5 mm.

[0039] Alternatively, the inner surfaces of the plurality of arc-shaped plate segments 22 are formed surrounding a predetermined ring, and the outer surface of the protrusion 21 and the predetermined ring have a predetermined distance D, the predetermined distance D being 0.5 mm or more and 3 mm or less. Thus, the above configuration not only improves the structural strength of the protrusion 21 and extends the service life of the dust cap, but also allows the arc-shaped plate segments 22 to have a certain deformation amount so that the dust cap can be fitted to valve bodies 10 of different sizes.

[0040] It should be clarified that the predetermined ring herein refers to the smallest predetermined ring.

[0041] In this embodiment, the predetermined distance D is 1.5 mm. It should be noted that the value of the predetermined distance D is not limited thereto and can be adjusted according to working conditions and usage requirements. Optionally, the predetermined distance D is 1.0 mm, 2.0 mm, or 2.5 mm.

[0042] Optionally, a convex rib is provided on the inner surface of the arc-shaped plate segment 22, and the extending direction of the convex rib coincides with that of the cylindrical body 20. As a result, in the process of fitting the dust cap to the valve body 10, the convex rib comes into contact with the valve body 10 due to the above configuration, so that the contact area between the dust cap and the valve body 10 is further reduced, and the frictional force between them is reduced, making it easier and simpler to fit the dust cap to the valve body 10, and reducing the difficulty of fitting.

[0043] Optionally, the protruding rib is multiple and the multiple protruding ribs are spaced apart along the inner circumferential surface of the barrel 20 .

[0044] 5 and 6, the present application further provides a stop valve including a valve body 10, a valve stem 50 and a dust cap 60, where the valve stem 50 is movably mounted in the valve body 10 and the dust cap 60 is fitted to the top of the valve body 10. Here, the dust cap 60 is the above-mentioned dust cap.

[0045] From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

[0046] The protrusion is formed by at least a part of the cylinder protruding from the inside to the outside, and extends along the central axis of the cylinder, so that when the size of the part to be fitted is larger than the size of the dustproof chamber in the process of fitting the dust cap to the top of the valve body, the above-mentioned configuration of the protrusion can deform the non-protruding part of the cylinder so as to expand outward, so that the deformed dust cap can be fitted to the valve body, and further, the problem that the dust cap in the prior art is poor in versatility is solved, and the versatility of the dust cap is improved so that the dust cap can protect valve bodies of different sizes.

[0047] It is clear that the above-mentioned embodiments are only some of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments that a person skilled in the art can obtain without creative efforts should fall within the scope of protection of the present application.

[0048] It should be noted that the terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and further, when the terms "comprise" and / or "comprise" are used herein, it is to be understood that features, steps, operations, devices, assemblies, and / or combinations thereof are present.

[0049] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Those skilled in the art can make various modifications and variations to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A dust cap for fitting onto the top of a valve body (10) of a stop valve, comprising: A cylindrical body (20); a top plate (30) provided to cover one end of the cylindrical body (20) so as to surround and form a dustproof chamber (40) together with the cylindrical body (20); Here, at least a portion of the cylindrical body (20) protrudes from the inside to the outside to form a protrusion (21), and the protrusion (21) extends along the central axis of the cylindrical body (20).

2. The dust cap of claim 1, wherein the length of the protrusion (21) is the same as the length of the barrel (20).

3. The dust cap of claim 1 , wherein an orthogonal projection of the protrusion (21) on the top plate (30) is located within the top plate (30).

4. The dust cap of claim 1 , wherein the protrusion (21) is one of an arc-shaped structure, a V-shaped structure, and a U-shaped structure.

5. The dust cap according to claim 1, wherein the protrusion (21) is one or more, and the multiple protrusions (21) are spaced apart along the circumferential direction of the cylindrical body (20).

6. The dust cap of claim 1, wherein the cylindrical body (20) includes a plurality of arc-shaped plate segments (22) spaced apart along the circumferential direction of the cylindrical body (20), and two adjacent arc-shaped plate segments (22) are connected via the protrusion (21), and each of the arc-shaped plate segments (22) is arranged at an incline with respect to a direction S extending from the top plate (30) toward the cylindrical body (20).

7. The dust cap of claim 6, wherein an inner diameter of the dustproof chamber (40) gradually increases in a direction away from the top plate (30).

8. The width W of the protrusion (21) is 1 mm or more and 5 mm or less, or The inner surfaces of the plurality of arc-shaped plate segments (22) are formed to surround a predetermined ring, and the outer surface of the protrusion (21) and the predetermined ring have a predetermined distance D, and the predetermined distance D is 0.5 mm or more and 3 mm or less, or 8. The dust cap of claim 7, wherein the width W of the protrusion (21) is 1 mm or more and 5 mm or less, the inner surfaces of the plurality of arc-shaped plate segments (22) are formed by surrounding a predetermined ring, the outer surface of the protrusion (21) and the predetermined ring have a predetermined distance D, and the predetermined distance D is 0.5 mm or more and 3 mm or less.

9. 8. The dust cap according to claim 7, wherein a convex rib is provided on the inner surface of the arc-shaped plate segment (22), and the extending direction of the convex rib and the extending direction of the cylindrical body (20) are aligned with each other.

10. 10. A stop valve comprising a valve body (10), a valve stem (50) and a dust cap (60), the valve stem (50) being movably disposed within the valve body (10) and the dust cap (60) being fitted to a top of the valve body (10), wherein the dust cap (60) is a dust cap as defined in any one of claims 1 to 9.

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