Valve cavity bush

Abstract

The utility model relates to the field of valve cavities, in particular to a valve cavity bush, a detachable bush inner wall is installed in a valve cavity bush body, a plurality of annular cavities are downwards formed in the top of the valve cavity bush body, and clamping pieces used for clamping the bush inner wall are rotationally arranged in the annular cavities; a side cavity is formed in the position, located on one side of the annular cavity, of the valve cavity bush body, and a side piece matched with the notch is movably arranged in the side cavity. According to the utility model, the valve cavity bush body and the bush inner wall are arranged in a modularized manner, and the bush inner wall is fixedly arranged on the valve cavity bush body through the clamping piece, so that when the bush inner wall is seriously abraded, only the bush inner wall needs to be replaced, and the economic cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve cavity technical field especially relates to a valve cavity bushing. BACKGROUND

[0002] Valve cavity bushing is a kind of key assembly for the inside of valve, it mainly plays sealing, wear protection and guide etc. It is usually arranged in bonnet, sheath valve stem or relevant moving parts, to reduce wear, prevent leakage, and ensure the normal sealing performance of valve.

[0003] In the process of valve opening and closing, fluid medium will flow through the inner wall of valve cavity bushing. High-speed fluid medium will produce scouring effect to the inner wall of bushing, and long-term effect leads to inner wall wear. When valve cavity bushing is seriously worn, the whole valve cavity bushing needs to be replaced, which leads to the increase of economic cost. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the shortcomings in prior art and provides a valve cavity bushing.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A valve cavity bushing, including valve cavity bushing body, the inside of valve cavity bushing body is installed with detachable bushing inner wall, the top of valve cavity bushing body is downwardly provided with a plurality of annular cavities, and the annular cavity is rotationally provided with a clamping piece for clamping the bushing inner wall, the clamping piece is provided with a notch, and the side of the annular cavity of the valve cavity bushing body is provided with a side cavity, and the side cavity is movably provided with a side piece matched with the notch.

[0007] In addition, preferably, a plurality of mounting pieces are vertically fixed on the inner wall of the valve cavity bushing body, and a mounting cavity is matched and provided on the outer wall of the bushing inner wall corresponding to the mounting piece.

[0008] In addition, preferably, a plurality of clamping grooves are downwardly provided on the top of the bushing inner wall, and the clamping grooves are matched with the clamping pieces.

[0009] In addition, preferably, a vertical column is fixed and vertically arranged upward in the annular cavity, and the clamping piece is sleeved on the vertical column and rotates.

[0010] In addition, preferably, an anti-falling piece is fixed on the top of the vertical column, and an anti-falling groove is matched and provided on the top of the clamping piece corresponding to the anti-falling piece.

[0011] In addition, preferably, a spring cavity is provided on the bottom of the side cavity of the valve cavity bushing body, a spring is upwardly installed in the spring cavity, and the other end of the spring is connected with the side piece.

[0012] The valve cavity bushing body and the bushing inner wall are modularly arranged, the bushing inner wall is fixedly installed on the valve cavity bushing body through the clamping piece, and after the bushing inner wall is seriously abraded, only the bushing inner wall needs to be replaced, and economic cost is saved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 A structure schematic view of a valve cavity bushing is provided in the utility model.

[0014] Figure 2 A structure schematic view of a bushing inner wall of a valve cavity bushing is provided in the utility model. Figure 1

[0015] Figure 3 A structure schematic view of a bushing inner wall of a valve cavity bushing is provided in the utility model.

[0016] Figure 4 A structure schematic view of a clamping piece and a side piece in the utility model is provided. Figure 2

[0017] A structure schematic view of a clamping piece and a side piece in the utility model is provided. Figure 5 Figure 4

[0018] Figure 6 A structure schematic view of a clamping piece of a valve cavity bushing is provided in the utility model.

[0019] In the drawing: 1, valve cavity bushing body; 11, mounting piece; 12, annular cavity; 121, stand; 122, anti-falling piece; 13, side cavity; 131, spring cavity; 132, spring; 2, bushing inner wall; 21, mounting cavity; 22, clamping groove; 3, clamping piece; 31, anti-falling groove; 32, notch; 4, side piece. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0021] Referring to Figures 1-6 A valve cavity bushing, comprising a valve cavity bushing body 1, a detachable bushing inner wall 2 is installed inside the valve cavity bushing body 1, a plurality of annular cavities 12 are formed downward on the top of the valve cavity bushing body 1, and a clamping piece 3 for clamping the bushing inner wall 2 is rotatably arranged in the annular cavity 12. Notches 32 are formed on the clamping piece 3, side cavities 13 are formed on one side of the annular cavity 12 on the valve cavity bushing body 1, and side pieces 4 matched with the notches 32 are movably arranged in the side cavities 13.

[0022] ​​​The inner wall of the valve cavity bushing body 1 is vertically fixed with a plurality of mounting pieces 11, and the outer wall of the bushing inner wall 2 is correspondingly provided with a mounting cavity 21 matched with the mounting piece 11. Through the matching between the mounting piece 11 and the mounting cavity 21, the bushing inner wall 2 can be stably assembled in the valve cavity bushing body 1.

[0023] The top of the bushing inner wall 2 is downwardly provided with a plurality of clamping grooves 22, and the clamping grooves 22 are matched with the clamping piece 3. Through the matching between the clamping groove 22 and the clamping piece 3, the bushing inner wall 2 can be clamped and fixed.

[0024] The annular cavity 12 is vertically provided with a plurality of vertical columns 121, and the clamping piece 3 is rotatably sleeved on the vertical column 121. The top of the vertical column 121 is fixedly provided with an anti-falling piece 122, and the top of the clamping piece 3 is correspondingly provided with an anti-falling groove 31 matched with the anti-falling piece 122. Through the matching between the anti-falling piece 122 and the anti-falling groove 31, the clamping piece 3 can be prevented from falling off the vertical column 121.

[0025] The bottom of the valve cavity bushing body 1 is provided with a spring cavity 131, and the spring cavity 131 is upwardly provided with a spring 132, and the other end of the spring 132 is connected with the side piece 4.

[0026] In this embodiment, the valve cavity bushing body 1 and the bushing inner wall 2 are modularly arranged. When the bushing inner wall 2 is severely worn, only the bushing inner wall 2 on the valve cavity bushing body 1 needs to be replaced. In this way, the entire valve cavity bushing body 1 does not need to be replaced, saving economic cost.

[0027] Further, when the user needs to install the bushing inner wall 2 in the valve cavity bushing body 1, the user only needs to pull up the side piece 4, and at this time the spring 132 is stretched. Then the user rotates the clamping piece 3, so that the notch 32 of the clamping piece 3 is aligned with the valve cavity bushing body 1, and at this time the side piece 4 is located above the clamping piece 3, and then all the clamping pieces 3 are sequentially operated.

[0028] At this time, the user can install the bushing inner wall 2 in the valve cavity bushing body 1 through the mutual matching between the mounting piece 11 and the mounting cavity 21, and then the user rotates the clamping piece 3 again, and at this time the arc surface of the clamping piece 3 can be clamped in the clamping groove 22 of the bushing inner wall 2, so as to realize the clamping and fixing of the bushing inner wall 2. When the clamping piece 3 is rotated, the notch of the clamping piece 3 will face the side cavity 13, and at this time the side piece 4 can be automatically moved downward to reset to the side cavity 13 by the elastic force of the spring 132, so as to clamp the clamping piece 3 through the side piece 4, which can prevent the clamping piece 3 from rotating.

[0029] Further, when the user needs to remove the inner wall 2 of the bush, the user only needs to pull the side piece 4 upward again, then rotate the clamping piece 3 again to face the gap 32 of the clamping piece 3 to the clamping groove 22. At this time, the clamping piece 3 is no longer clamped with the clamping groove 22, then repeat the operation on the remaining clamping piece 3, and finally the inner wall 2 of the bush can be removed.

[0030] Further, the top of the side piece 4 is provided with a buckle groove, so as to facilitate the user to move the side piece 4.

[0031] In the utility model, the valve cavity bush body 1 and the inner wall 2 of the bush are modularly arranged, the inner wall 2 of the bush is fixedly installed on the valve cavity bush body 1 through the clamping piece 3, and when the inner wall 2 of the bush is seriously worn, the inner wall 2 of the bush only needs to be replaced, so that the economic cost is saved.

[0032] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art in the technical range disclosed by the utility model, according to the technical scheme and the utility model concept of the utility model, equivalent replacement or change are covered in the protection scope of the utility model.

Claims

1. A valve pocket bushing comprising a valve pocket bushing body (1), characterized in that, The detachable inner wall (2) is mounted in the valve cavity bushing body (1), a plurality of annular cavities (12) are formed in the top of the valve cavity bushing body (1), and the clamping pieces (3) for clamping the inner wall (2) are rotatably arranged in the annular cavities (12). The clamping pieces (3) are provided with notches (32), the valve cavity bushing body (1) is provided with side cavities (13) on one side of the annular cavities (12), and the side pieces (4) matched with the notches (32) are movably arranged in the side cavities (13).

2. A valve cage according to claim 1, wherein A plurality of mounting pieces (11) are vertically arranged on the inner wall of the valve cavity bushing body (1), and the outer wall of the inner wall (2) is provided with mounting cavities (21) corresponding to the mounting pieces (11).

3. A valve cage according to claim 1, wherein A plurality of clamping grooves (22) are formed in the top of the inner wall (2), and the clamping grooves (22) are matched with the clamping pieces (3).

4. A valve cage according to claim 1, wherein A plurality of vertical columns (121) are fixedly arranged in the annular cavities (12), and the clamping pieces (3) are rotatably arranged on the vertical columns (121).

5. A valve cage according to claim 4, wherein The top of the vertical column (121) is fixedly provided with an anti-falling piece (122), and the top of the clamping piece (3) is provided with an anti-falling groove (31) corresponding to the anti-falling piece (122).

6. A valve cage in accordance with claim 1 wherein, The valve cavity bushing body (1) is provided with spring cavities (131) at the bottom of the side cavities (13), springs (132) are upwardly arranged in the spring cavities (131), and the other ends of the springs (132) are connected with the side pieces (4).

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