A valve plate special bolt positioning sleeve

Abstract

The utility model discloses a bolt positioning sleeve special for valve plate, including sleeve and limit ring, the limit ring coaxial fixed in the sleeve top, the diameter of limit ring is greater than the diameter of sleeve, is equipped with the dismounting groove at limit ring top, be equipped with the positioning hole in the sleeve, the positioning hole penetrates sleeve and limit ring, the sleeve includes the screw portion and the positioning portion, the positioning portion is located between screw portion and limit ring, the positioning portion is attached with bottom hole top inner wall, the screw portion is matched with bottom hole bottom inner wall threadedly, the utility model discloses adopt front bottom column and rear bottom plate cooperation, adopt the positioning portion, guarantee bottom hole and the qualified cooperation clearance of positioning sleeve, add the screw portion, can with bottom hole fixed positioning sleeve, prevent positioning sleeve from falling off, avoid the deformation of positioning sleeve that need tight cooperation, and cooperate dismounting groove and dismounting hole, and positioning sleeve installation dismounting is convenient.

Description

Technical Field

[0001] This utility model relates to positioning sleeve technology, specifically a valve plate special bolt positioning sleeve. Background Technology

[0002] Positioning sleeves are common auxiliary tools in the mechanical field, often used to fix various mechanical parts.

[0003] Ordinary positioning sleeves are generally installed into the bottom hole of the valve plate using two methods: sliding fit and tight fit. However, the sliding fit method makes the positioning sleeve easy to fall off, and frequent use will lead to the positioning sleeve falling off and being lost. On the other hand, the tight fit method will cause the positioning sleeve to deform, the positioning hole diameter to become smaller, and it will be impossible to remove and replace it. As a result, during use, the positioning sleeve will get stuck on the spindle and cannot be removed, affecting the replacement and maintenance of the valve plate and spindle. Utility Model Content

[0004] To address the shortcomings of the prior art, this utility model provides a special bolt positioning sleeve for valve plates, which adds a threaded portion to fix the positioning sleeve in the bottom hole. This facilitates installation and disassembly, prevents the positioning sleeve from falling off, and avoids deformation of the positioning sleeve.

[0005] To achieve the above technical objectives, this utility model adopts the following technical solution: a valve plate special bolt positioning sleeve, including a sleeve and a limiting ring, wherein the limiting ring is coaxially fixed to the top of the sleeve, the diameter of the limiting ring is larger than the diameter of the sleeve, the top of the limiting ring is provided with a disassembly groove, the sleeve is provided with a positioning hole, the positioning hole penetrates the sleeve and the limiting ring, the sleeve includes a threaded part and a positioning part, the positioning part is located between the threaded part and the limiting ring, the positioning part fits against the inner wall of the top of the bottom hole, and the threaded part is threadedly engaged with the inner wall of the bottom of the bottom hole.

[0006] Preferably, the limiting ring and the sleeve are integrally formed.

[0007] Preferably, the outer periphery of the top of the positioning hole is chamfered.

[0008] Preferably, the length of the threaded portion is the same as the length of the positioning portion.

[0009] Preferably, the positioning hole is provided with disassembly holes on both sides.

[0010] Preferably, the top edge of the disassembly hole is chamfered.

[0011] Preferably, the inner wall of the disassembly hole is provided with internal threads.

[0012] In summary, this utility model achieves the following technical effects:

[0013] The valve plate bolt positioning sleeve of this utility model adopts a positioning part to ensure the qualified fit clearance between the bottom hole and the positioning sleeve. The added thread part can fix the positioning sleeve to the bottom hole, prevent the positioning sleeve from falling off, avoid the positioning sleeve from deforming due to tight fitting, and with the matching disassembly groove and disassembly hole, the positioning sleeve is easy to install and disassemble. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of the valve plate special bolt positioning sleeve of this utility model;

[0015] Figure 2 This is a side view of the valve plate special bolt positioning sleeve of this utility model;

[0016] Figure 3 yes Figure 2 Sectional view along axis AA;

[0017] Explanation of the reference numerals in the accompanying drawings: 1. Sleeve; 11. Positioning part; 12. Threaded part; 2. Limiting ring; 3. Positioning hole; 4. Disassembly groove; 5. Disassembly hole. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings.

[0019] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] Example 1:

[0025] like Figure 1 As shown in Figure 3, a valve plate bolt positioning sleeve includes a sleeve 1 and a limiting ring 2. The limiting ring 2 is coaxially fixed to the top of the sleeve 1. The diameter of the limiting ring 2 is larger than the diameter of the sleeve 1. The top of the limiting ring 2 is provided with a disassembly groove 4. The sleeve 1 is provided with a positioning hole 3, which penetrates the sleeve 1 and the limiting ring 2. The sleeve 1 includes a threaded part 12 and a positioning part 11. The positioning part 11 is located between the threaded part 12 and the limiting ring 2. The positioning part 11 fits against the inner wall of the top of the bottom hole, and the threaded part 12 is threadedly engaged with the inner wall of the bottom of the bottom hole.

[0026] The valve plate special bolt positioning sleeve of this embodiment adopts positioning part 11 to ensure that the fit clearance between the bottom hole and the positioning sleeve is qualified. The added threaded part 12 can fix the positioning sleeve to the bottom hole, prevent the positioning sleeve from falling off, avoid the positioning sleeve from deforming due to tight fitting, and with the disassembly groove 4 and disassembly hole 5, the positioning sleeve is easy to install and disassemble.

[0027] The limiting ring 2 and the sleeve 1 are integrally formed; the limiting sleeve and sleeve 1, which are integrally formed, have better strength.

[0028] The outer periphery of the top of the positioning hole 3 is chamfered; the chamfer ensures smooth mating of the positioning mandrel.

[0029] The length of the threaded portion 12 is the same as the length of the positioning portion 11; the threaded portion 12 and the positioning portion 11 each occupy half, which not only ensures the fixing effect of the positioning sleeve and the bottom hole, but also ensures that the fit clearance between the bottom hole and the positioning sleeve is qualified during assembly and disassembly.

[0030] The positioning hole 3 is provided with disassembly holes 5 on both sides; the disassembly holes 5 can be used to tighten and loosen the positioning sleeve with tools when the disassembly groove 4 is damaged, so as to facilitate the disassembly and assembly of the positioning sleeve.

[0031] The top outer periphery of the disassembly hole 5 is chamfered; the chamfer makes it easier to insert tools into the disassembly hole 5.

[0032] The inner wall of the disassembly hole 5 is provided with internal threads; the internal threads can facilitate the fixing of tools to the disassembly hole 5, or the threads can be used with bolts to fix the limit ring 2 to the valve plate, further improving the fixing effect of the positioning sleeve.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. A special bolt positioning sleeve for valve plates, characterized in that, The device includes a sleeve and a limiting ring. The limiting ring is coaxially fixed to the top of the sleeve. The diameter of the limiting ring is larger than the diameter of the sleeve. The top of the limiting ring is provided with a disassembly groove. The sleeve is provided with a positioning hole that penetrates the sleeve and the limiting ring. The sleeve includes a threaded part and a positioning part. The positioning part is located between the threaded part and the limiting ring. The positioning part fits against the inner wall of the top of the bottom hole. The threaded part is threadedly engaged with the inner wall of the bottom of the bottom hole.

2. The valve plate special bolt positioning sleeve according to claim 1, characterized in that, The limiting ring and the sleeve are integrally formed.

3. A bolt location sleeve for valve plates according to claim 1, characterized in that The outer periphery of the top of the positioning hole is chamfered.

4. The valve plate special bolt positioning sleeve according to claim 1, characterized in that, The length of the threaded portion is the same as the length of the positioning portion.

5. A valve plate bolt positioning sleeve according to claim 1, characterized in that, The positioning hole has disassembly holes on both sides.

6. A valve plate bolt positioning sleeve according to claim 5, characterized in that, The top of the disassembly hole has a chamfer on its outer periphery.

7. A valve plate bolt positioning sleeve according to claim 5, characterized in that, The inner wall of the disassembly hole is provided with internal threads.

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