Acid and alkali corrosion resistant mud valve rubber core

Abstract

The utility model discloses an acid and alkali corrosion resistant mud valve rubber core, and relates to the technical field of mud valve rubber cores, the acid and alkali corrosion resistant mud valve rubber core comprises a core body and a protection assembly, the outer surface of the core body is provided with a soft diaphragm, the protection assembly used for improving the acid and alkali corrosion resistant performance is arranged in the core body, and the protection assembly comprises an inner coating and an extension sheet, an extending piece is connected to the end of the inner coating, an auxiliary assembly used for assisting the rubber core to be closed is arranged on the outer side of the middle of the core body and comprises a reinforcing block, a bending groove, a rebound strip, a bending block and a positioning disc, and the bending groove is formed in the inner side of the reinforcing block. According to the acid and alkali corrosion resistant mud valve rubber core, the acid and alkali corrosion resistant capacity of the core body is improved on the inner wall of the core body through the inner coating made of the epoxy colored anticorrosive paint, the tensile strength and the anti-pressure capacity are improved, the overall durability of the core body in a severe environment is enhanced, the reinforcing blocks play a reinforcing role on the side edge of the core body, and the service life of the core body is prolonged. The bending groove enables the core body to have a directional bending guiding effect when the core body deforms and is closed.

Description

TECHNICAL FIELD

[0001] The utility model relates to mud valve rubber core technical field, concretely is acid and alkali corrosion resistant mud valve rubber core. BACKGROUND

[0002] Mud valve rubber core is the oil field drilling operation is mud manifold, and mud valve rubber core is the control element effect of mud fluid connection and closing, and the traditional mud valve rubber core will appear damage after long time use, thereby leading to control valve out of control.

[0003] Such as the utility model discloses a kind of mud valve rubber core convenient to disassemble, the mud valve rubber core is more rapid when using replacement, reduce manual labor and increase work efficiency, but the existing mud valve rubber core is weak in tolerance when using, and the service life of core body is affected by acid and alkali corrosion, thereby affecting the use of mud valve.

[0004] Therefore, in view of the above, the existing structure and the lack are improved, and an acid and alkali corrosion resistant mud valve rubber core is provided. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an acid and alkali corrosion resistant mud valve rubber core to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: an acid and alkali corrosion resistant mud valve rubber core, comprising a core body and a protection assembly, the outer surface of the core body is provided with a soft film piece, the protection assembly for increasing acid and alkali corrosion resistance is arranged in the core body, and the protection assembly comprises an inner coating and an extension piece, the end of the inner coating is connected with the extension piece, the outer side of the middle part of the core body is provided with an auxiliary assembly for assisting the closure of the rubber core, and the auxiliary assembly comprises a reinforcing block, a bending groove, a rebound strip, a folding block and a positioning disc, the inner side of the reinforcing block is provided with a bending groove, and the side of the bending groove is provided with a rebound strip, the middle part of the bending groove is provided with a folding block, and the side of the folding block is provided with a positioning disc.

[0007] Further, the core body and the soft film piece are closely attached, and the reinforcing block is symmetrically arranged about the vertical central axis of the core body.

[0008] Further, the reinforcing block and the bending groove are an integrated structure, and the rebound strip is symmetrically arranged about the central axis of the bending groove.

[0009] Further, the folding block and the positioning disc are fixedly connected, and the number of the folding block and the positioning disc is two.

[0010] Further, the end of the core body is connected with a core head, and the core body and the core head are fixedly connected.

[0011] Further, the side of the core head is provided with a buffering assembly for buffering, and the buffering assembly is symmetrically provided with two groups about the vertical central axis.

[0012] Further, the buffering assembly comprises a terminal piece and a buffering piece, and the outer side of the terminal piece is connected with the buffering piece.

[0013] Further, the buffering assembly further comprises an inner ring and a buffering cavity, the inner side of the terminal piece is connected with the inner ring, and the inner side of the inner ring and the buffering piece is provided with the buffering cavity.

[0014] The utility model provides a kind of acid and alkali corrosion resistant slurry valve rubber core, with the following beneficial effects:

[0015] 1, the utility model discloses an inner coating of material is epoxy color anticorrosive paint, and the acid and alkali corrosion resistance of core body is increased in inner wall, and tensile strength and compression resistance are increased, the overall durability in harsh environment is enhanced, reinforcing block plays the role of reinforcement in the side of core body, bending groove makes the core body have the effect of directional guiding bending when deformation is closed, springback strip increases the springback effect after core body is reconnected, and the accurate connection of adjusting valve rod and folding block in positioning disc inside valve body is more preferably opened and closed control to core body.

[0016] 2, the utility model discloses the buffering effect of core head at both ends by terminal piece, buffering piece and inner ring, and the buffering cavity in it provides deformation displacement space for core body, to relieve stress concentration caused by thermal expansion and contraction or equipment vibration, and the tensile strength of soft film piece is increased on the outer surface of core body, to avoid that core body is cracked early in use and affects use. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure schematic view of the utility model acid and alkali corrosion resistant slurry valve rubber core;

[0018] Figure 2 It is the buffering assembly structure schematic view of the utility model acid and alkali corrosion resistant slurry valve rubber core;

[0019] Figure 3 It is the protection assembly structure schematic view of the utility model acid and alkali corrosion resistant slurry valve rubber core.

[0020] In the drawing: 1, core body;2, soft film piece;3, auxiliary assembly;301, reinforcing block;302, bending groove;303, springback strip;304, folding block;305, positioning disc;4, core head;5, buffering assembly;501, terminal piece;502, buffering piece;503, inner ring;504, buffering cavity;6, protection assembly;601, inner coating;602, extension piece. DETAILED DESCRIPTION

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0022] like Figure 1 As shown, an acid and alkali resistant mud valve core includes a core body 1 and a protective component 6. A soft diaphragm 2 is provided on the outer surface of the core body 1, and the core body 1 and the soft diaphragm 2 are tightly fitted together. The soft diaphragm 2 increases the tensile strength of the outer surface of the core body 1, preventing premature cracking of the core body 1 during use. An auxiliary component 3 for assisting the closure of the core is provided on the outer side of the middle part of the core body 1. The auxiliary component 3 includes a reinforcing block 301, a bending groove 302, a spring strip 303, a folding block 304, and a positioning plate 305. The inner side of the reinforcing block 301 has a bending groove 302. The reinforcing block 301 and the bending groove 302 are an integrated structure. Two sets of spring strips 303 are symmetrically arranged about the central axis of the bending groove 302. The spring strips 303 increase the tensile strength of the core body 1. The rebound effect after opening is achieved by reinforcing block 301 on the side of core 1. Bending groove 302 guides the bending of core 1 when it is deformed and closed. Rebound strip 303 is installed on the side of bending groove 302. Bending block 304 is set in the middle of bending groove 302. The rectangular bending block 304 compresses core 1 to make its sealing effect better. Positioning plate 305 is installed on the side of bending block 304. Bending block 304 and positioning plate 305 are fixedly connected. There are two sets of bending block 304 and positioning plate 305. The positioning plate 305 is used to adjust the valve stem on the valve body and accurately connect the bending block 304 to better control the opening and closing of core 1. There are two reinforcing blocks 301 symmetrically arranged about the vertical central axis of core 1.

[0023] like Figure 2 As shown, the core body 1 is connected to a core head 4 at its end, and the core body 1 and the core head 4 are fixedly connected. The side of the core head 4 is provided with a buffer assembly 5 for buffering, and two sets of buffer assemblies 5 are symmetrically arranged about the vertical central axis. The buffer assembly 5 includes an end piece 501 and a buffer piece 502, and the outer side of the end piece 501 is connected to the buffer piece 502. The end piece 501, the buffer piece 502 and the inner ring 503 play a buffering role at both ends of the core head 4. The buffer assembly 5 also includes an inner ring 503 and a buffer cavity 504. The inner side of the end piece 501 is connected to the inner ring 503, and the inner side of the inner ring 503 and the buffer piece 502 is provided with a buffer cavity 504. The buffer cavity 504 inside provides deformation displacement space for the core body 1 to alleviate stress concentration caused by thermal expansion and contraction or equipment vibration.

[0024] like Figure 3As shown, the protection assembly 6 for increasing acid and alkali corrosion resistance is arranged inside the core body 1, and the protection assembly 6 comprises an inner coating layer 601 and an extension piece 602, the end of the inner coating layer 601 is connected with the extension piece 602, the inner coating layer 601 made of epoxy color corrosion-resistant paint increases the acid and alkali corrosion resistance of the core body 1, and increases the tensile strength and compression capacity, and enhances the overall durability in harsh environments.

[0025] In summary, the acid and alkali corrosion resistant mud valve rubber core has the advantages that Figures 1-3 As shown in the structure, when used, the core body 1 is installed inside the mud valve, the soft film piece 2 on the outer surface of the core body 1 increases the tensile strength of the outer surface of the core body 1 outside the core body 1, avoids the core body 1 from being cracked too early to affect use, the annular inner coating layer 601 made of epoxy color corrosion-resistant paint inside the core body 1 increases the acid and alkali corrosion resistance of the core body 1, and increases the tensile strength and compression capacity, and enhances the overall durability in harsh environments, when installed, the adjusting valve rod end and the positioning disc 305 on the valve body are connected, facilitating the use of the valve body, when used, the valve rod rotates to push the folding block 304 and the positioning disc 305 to move in the bending groove 302, which has the effect of extruding and deforming the core body 1, so that the core body 1 has better closing effect, and the rebounding strip 303 increases the rebounding effect of the core body 1 after being opened, and the end piece 501, the buffer piece 502 and the inner ring 503 at the two ends of the core head 4 have the effect of buffering, the buffer cavity 504 inside provides displacement space for the core body 1 to relieve stress concentration caused by thermal expansion and contraction or equipment vibration.

[0026] The embodiments of the present application are given for the purpose of illustration and description, and are not exhaustive or limit the present application to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are chosen and described in order to better explain the principles of the present application and practical application, and to enable ordinary skilled in the art to understand the present application so as to design various embodiments with various modifications suitable for specific purposes.

Claims

1. An acid and alkali corrosion resistant slurry valve rubber core comprising a core body (1) and a protection assembly (6), characterized in that, The outer surface of the core body (1) is provided with a soft film piece (2), the protection assembly (6) for increasing acid and alkali corrosion resistance is arranged in the core body (1), and the protection assembly (6) comprises an inner coating (601) and an extension piece (602), the end of the inner coating (601) is connected with the extension piece (602), the outer side of the middle part of the core body (1) is provided with an auxiliary assembly (3) for assisting the closure of the rubber core, and the auxiliary assembly (3) comprises a reinforcing block (301), a bending groove (302), a rebound strip (303), a folding block (304) and a positioning disc (305), the inner side of the reinforcing block (301) is provided with the bending groove (302), the side edge of the bending groove (302) is provided with the rebound strip (303), the middle part of the bending groove (302) is provided with the folding block (304), and the side edge of the folding block (304) is provided with the positioning disc (305).

2. The acid and alkali corrosion resistant slurry valve disc according to claim 1, characterized in that, The core body (1) and the soft film piece (2) are closely attached, and the reinforcing block (301) is symmetrically provided with two about the vertical central axis of the core body (1).

3. The acid and alkali corrosion resistant slurry valve disc according to claim 1, characterized in that, The reinforcing block (301) and the bending groove (302) are an integrated structure, and the rebound strip (303) is symmetrically provided with two groups about the central axis of the bending groove (302).

4. The acid and alkali corrosion resistant slurry valve disc according to claim 1, characterized in that, The folding block (304) and the positioning disc (305) are fixedly connected, and the folding block (304) and the positioning disc (305) are provided with two groups.

5. The acid and alkali corrosion resistant slurry valve disc according to claim 1, characterized in that, The end of the core body (1) is connected with a core head (4), and the core body (1) and the core head (4) are fixedly connected.

6. The acid and alkali corrosion resistant slurry valve disc according to claim 5, characterized in that, The side edge of the core head (4) is provided with a buffer assembly (5) for buffering, and the buffer assembly (5) is symmetrically provided with two groups about the vertical central axis.

7. The acid and alkali corrosion resistant slurry valve disc according to claim 6, characterized in that, The buffer assembly (5) comprises a terminal piece (501) and a buffer piece (502), and the outer side of the terminal piece (501) is connected with the buffer piece (502).

8. The acid and alkali corrosion resistant slurry valve disc according to claim 7, characterized in that, The buffer assembly (5) further comprises an inner ring (503) and a buffer cavity (504), the inner side of the terminal piece (501) is connected with the inner ring (503), and the inner sides of the inner ring (503) and the buffer piece (502) are provided with the buffer cavity (504).

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