Detachable valve clack assembly

Abstract

The utility model relates to the technical field of valve clack installation, in particular to a detachable valve clack assembly which comprises a valve clack, a valve clack cover and a limiting piece, the valve clack cover is installed in the valve clack, the top of the valve clack cover is lower than the upper surface of the valve clack, a limiting groove is formed in the valve clack, one side of the limiting piece is detachably arranged in the limiting groove, and the other side of the limiting piece is detachably arranged in the limiting groove. And the projection of the other side of the valve clack extends out of the limiting groove, and at least part of the projection of the valve clack in the vertical direction falls on the upper end face of the valve clack cover. Spot welding is not needed, so that the operation efficiency is greatly improved; through the design that the valve clack cover is installed in the valve clack and the top of the valve clack cover is lower than the upper surface of the valve clack, rotation looseness of the valve clack cover caused by medium scouring can be effectively reduced, meanwhile, through the design of the limiting piece, looseness of the valve clack cover caused by vibration can be prevented, and the connection tightness of the valve clack cover and the valve clack is improved; inconvenience factors caused by conventional spot welding are avoided, and the overall attractiveness of the valve clack is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve flap installation, in particular to a detachable valve flap assembly. Background Art

[0002] In existing conventional valves, the valve disc and the valve stem are connected and fixed by a valve disc nut, and in order to prevent the valve disc nut from loosening due to medium erosion, the valve disc nut is usually spot welded and fixed, but there is a risk of the welding point after spot welding falling off. At the same time, during the replacement and maintenance of the valve disc, the welding point needs to be polished before the valve disc can be removed and replaced, and then it needs to be spot welded again after the replacement is completed, thereby reducing the operating efficiency;

[0003] In addition, the weld spots produced by spot welding affect the overall aesthetics of the valve disc, and the valve disc sealing surface needs to be protected during the spot welding process to prevent the weld spots from splashing onto the sealing surface, affecting the performance of the sealing surface and causing secondary rework, making the entire spot welding operation process more complicated.

[0004] Therefore, it is urgent to design a valve disc installation structure with a non-spot welding fixing method. Utility Model Content

[0005] The purpose of the utility model is to provide a detachable valve flap assembly that does not require spot welding. By installing the valve flap cover inside the valve flap with its top lower than the upper surface of the valve flap, the rotational loosening of the valve flap cover caused by medium scouring can be effectively reduced. At the same time, through the design of the limiter, the loosening of the valve flap cover caused by vibration can be prevented, the tightness of the connection between the valve flap cover and the valve flap is improved, the inconvenience caused by conventional spot welding is avoided, and the overall aesthetics of the valve flap is improved.

[0006] In order to solve the above technical problems, the utility model provides a detachable valve flap assembly, including a valve flap, a valve flap cover and a limit member, the valve flap cover is installed in the valve flap and its top is lower than the upper surface of the valve flap, a limit groove is arranged in the valve flap, one side of the limit member is detachably arranged in the limit groove, and the other side extends out of the limit groove and its projection in the vertical direction at least partially falls on the upper end surface of the valve flap cover.

[0007] Furthermore, a groove for inserting a disassembly tool is provided on the top of the valve flap cover.

[0008] Furthermore, there are two grooves which are symmetrically arranged along the radial direction of the valve flap cover.

[0009] Furthermore, the groove is in a square shape.

[0010] Furthermore, the limiting member is an elastic limiting member, and one side of the elastic limiting member is clamped in the limiting groove.

[0011] Furthermore, the elastic limiting member is a retaining spring.

[0012] Furthermore, the valve flap cover is threadedly connected to the valve flap.

[0013] Furthermore, the valve flap is provided with interconnected mounting hole one, mounting hole two and mounting hole three from bottom to top, the inner diameters of mounting hole one, mounting hole two and mounting hole three are distributed in increasing order, the upper end of the valve flap cover is located in mounting hole three, and the lower end thereof extends into mounting hole two and is threadedly connected thereto, and the limiting groove is arranged in mounting hole three and is located on the upper side of the valve flap cover.

[0014] The beneficial effects of the utility model are:

[0015] 1. The detachable valve flap assembly of the utility model has the characteristics of anti-loosening, reliable performance, repeated disassembly, simple structure, easy installation, no spot welding, and greatly improved operating efficiency; among them, by installing the valve flap cover inside the valve flap with its top lower than the upper surface of the valve flap, the rotational loosening of the valve flap cover caused by medium scouring can be effectively reduced. At the same time, through the design of the limiter, the loosening of the valve flap cover caused by vibration can be prevented, the tightness of the connection between the valve flap cover and the valve flap is improved, the inconvenience caused by conventional spot welding is avoided, and the overall aesthetics of the valve flap is improved.

[0016] 2. The utility model is designed with a groove for inserting a disassembly tool on the top of the valve flap cover, which can prevent the valve flap cover from being difficult to screw in due to low thread accuracy. The valve flap cover can be quickly screwed in with the help of a tool inserted into the groove, which has the effect of assisting the screwing in of the thread.

[0017] 3. The utility model adopts the design of the retaining ring. When periodic maintenance or replacement of the valve disc is required, the retaining ring can be removed by using retaining ring pliers, and the valve disc cover can be unscrewed to remove the valve disc. The operation is simple, the operating efficiency is greatly improved, and the inconvenience caused by conventional spot welding is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present invention, 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of the detachable valve flap assembly of the utility model;

[0020] Figure 2 It is a cross-sectional view of the detachable valve flap assembly of the utility model;

[0021] In the figure: 1-valve disc, 2-valve disc cover, 3-circlip, 21-groove, 11-mounting hole one, 12-mounting hole two, 13-mounting hole three, 131-limiting groove, 100-valve stem. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings of the utility model specification to clearly and completely describe the technical solutions in the embodiments of the utility model. 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 embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In a specific embodiment of the present invention, Figure 1-2 As shown, a detachable valve flap assembly includes a valve flap 1, a valve flap cover 2 and a limit member. The valve flap cover 2 is installed in the valve flap 1 and its top is lower than the upper surface of the valve flap 1. A limit groove 131 is arranged in the valve flap 1. The limit member is detachably arranged in the limit groove 131. Specifically, the limit member is an elastic limit member, one side of which is clamped in the limit groove 131, and the other side extends out of the limit groove 131 and its projection in the vertical direction at least partially falls on the upper end surface of the valve flap cover 2; this embodiment can effectively reduce the rotational loosening of the valve flap cover 2 caused by medium scouring by designing that the valve flap cover 2 is installed in the valve flap 1 and its top is lower than the upper surface of the valve flap 1. At the same time, through the design of the limit member, it can prevent the valve flap cover 2 from loosening due to vibration, thereby improving the tightness of the connection between the valve flap cover 2 and the valve flap 1. Here, the valve flap cover 2 is threadedly connected to the valve flap 1.

[0024] In this embodiment, a groove 21 for inserting a disassembly tool is provided on the top of the valve flap cover 2. The design of the groove can prevent the valve flap cover 2 from being difficult to screw in due to low thread accuracy, and facilitates the valve flap cover 2 to be screwed in through the groove with the help of a tool, which has the effect of assisting the screwing in of the thread.

[0025] like Figure 1 As shown, there are two grooves 21 which are symmetrically arranged along the radial direction of the valve flap cover 2, which is convenient for disassembly and assembly. In this embodiment, the shape of the groove 21 is square, which is convenient for processing. Of course, in other embodiments, the shape of the groove can also be designed to be other.

[0026] In this embodiment, the elastic limiting member is a retaining spring 3, the outer side of which is clamped in the limiting groove 131, and the inner side extends out of the annular limiting groove 131. Through the design of the retaining spring 3, in case of periodic maintenance or replacement of the valve flap 1, the elastic retaining spring 3 can be removed by using retaining spring pliers, and the valve flap cover 2 can be unscrewed to remove the valve flap 1, thereby avoiding the inconvenience caused by conventional spot welding.

[0027] like Figure 2As shown, the valve disc 1 is provided with a mounting hole 11, a mounting hole 2 12 and a mounting hole 3 13 which are connected from bottom to top. The inner diameters of the mounting hole 11, the inner diameters of the mounting hole 2 12 and the inner diameters of the mounting hole 3 13 are distributed in increasing order. The upper end of the valve disc cover 2 is located in the mounting hole 3 13, and the lower end thereof extends into the mounting hole 2 12 and is threadedly connected thereto. The limiting groove 131 is provided in the mounting hole 3 13 and is located on the upper side of the valve disc cover 2.

[0028] The installation process of the utility model is:

[0029] The valve stem 100 is installed inside the valve disc 1, specifically, as Figure 2 As shown, the lower end of the valve stem 100 extends into the mounting hole 11, and the valve flap cover 2 is inserted into the top of the valve stem 100 and screwed into the valve flap cover 2. A tool can be inserted into the groove 21 to quickly screw the lower end of the valve flap cover 2 into the mounting hole 2 12 and threadedly connected with it, and then the retaining ring 3 is installed in the limiting groove 131 on the upper side of the valve flap cover 2 to prevent the valve flap cover 2 from loosening due to vibration; in case of periodic maintenance or replacement of the valve flap 1, the elastic retaining ring 3 can be removed with retaining ring pliers, and the valve flap 1 can be removed by screwing out the valve flap cover 2, thereby avoiding the inconvenience caused by conventional spot welding and greatly improving the aesthetics of the valve flap 1.

[0030] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A detachable valve flap assembly, characterized in that: The invention comprises a valve flap (1), a valve flap cover (2) and a limiting member, wherein the valve flap cover (2) is installed in the valve flap (1) and its top is lower than the upper surface of the valve flap (1), a limiting groove (131) is arranged in the valve flap (1), one side of the limiting member is detachably arranged in the limiting groove (131), and the other side extends out of the limiting groove (131) and its projection in the vertical direction at least partially falls on the upper end surface of the valve flap cover (2).

2. A detachable valve flap assembly according to claim 1, characterized in that: The top of the valve flap cover (2) is provided with a groove (21) for inserting a disassembly tool.

3. A detachable valve flap assembly according to claim 2, characterized in that: The grooves (21) are provided in two portions and are symmetrically arranged along the radial direction of the valve flap cover (2).

4. A detachable valve flap assembly according to claim 3, characterized in that: The groove (21) is in a square shape.

5. The detachable valve flap assembly according to claim 1, characterized in that: The limiting member is an elastic limiting member, one side of which is clamped in the limiting groove (131).

6. A detachable valve flap assembly according to claim 5, characterized in that: The elastic limiting member is a clip spring (3).

7. A detachable valve flap assembly according to claim 1, characterized in that: The valve flap cover (2) is threadedly connected to the valve flap (1).

8. A detachable valve flap assembly according to claim 7, characterized in that: The valve flap (1) is provided with a mounting hole one (11), a mounting hole two (12) and a mounting hole three (13) which are connected from bottom to top in sequence, the inner diameters of the mounting hole one (11), the inner diameters of the mounting hole two (12) and the inner diameters of the mounting hole three (13) are distributed in an increasing manner, the upper end of the valve flap cover (2) is located in the mounting hole three (13), and the lower end thereof extends into the mounting hole two (12) and is threadedly connected thereto, and the limiting groove (131) is provided in the mounting hole three (13) and is located on the upper side of the valve flap cover (2).

Images