Anti-clamping mud valve rubber core

Abstract

The utility model relates to the field of mud valves, and provides an anti-clamping mud valve rubber core which comprises a surface layer, a supporting layer adheres to the inner wall of the surface layer, a sliding structure is welded to the top of the supporting layer, the sliding structure comprises a groove, a spring, an external pipe, an internal pipe and a sliding block, the groove is fixed to the top of the supporting layer, and the spring is fixed to the top of the supporting layer. A spring is fixed to the inner wall of the groove, and an external pipe penetrates through the interior of the spring. The sliding structure is arranged, the surface layer has good sealing performance, the supporting layer has good stability and supporting performance, when the flashboard makes contact with the sliding block, the sliding block is collected into the groove, the sliding block has the smooth surface, slurry is not prone to being retained on the surface of the sliding block, and meanwhile the function of reducing friction force of the contact point with the flashboard is achieved; and a gap is formed between the flashboard and the surface layer, so that the clamping stagnation phenomenon is reduced, the device has an anti-clamping stagnation function, and the practicability of the mud valve rubber core is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of mud valve, especially a kind of anti-jamming mud valve rubber core. BACKGROUND

[0002] The main function of mud valve is sealing and preventing mud leakage. Mud valve rubber core is an important component of mud valve, and is widely used in drilling mud manifold system in oil and gas exploitation, as well as high-pressure manifold system in other industrial fields such as petroleum chemical industry, papermaking and mining. It is mainly used to control the flow and closing of mud, to ensure the smooth progress of production process.

[0003] When the gate plate contacts the surface layer, it has a large friction force, and because the surface of the surface layer has mud, it increases the jamming, making it inconvenient to control the flow and closing of mud. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a kind of anti-jamming mud valve rubber core to solve the defect that the existing mud valve rubber core is not anti-jamming.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: an anti-jamming mud valve rubber core, comprising a surface layer;

[0006] The inner wall of the surface layer is pasted with a support layer;

[0007] The bottom of the support layer is fixed with a sealing structure;

[0008] The top of the support layer is welded with a sliding structure, the sliding structure comprises a groove, a spring, an external tube, an internal tube and a sliding block, the groove is fixed to the top of the support layer, the inner wall of the groove is fixed with a spring, the internal tube is provided with an internal tube, and the internal tube is fixed with a sliding block on one side.

[0009] Preferably, the grooves are symmetrically distributed, and six groups of grooves are provided.

[0010] Preferably, the groove is fixedly connected with the external tube, and the groove is not connected with the sliding block in contact.

[0011] Preferably, the spring is fixedly connected with the sliding block, and the external tube is slidingly connected with the internal tube.

[0012] Preferably, the internal tube is in the shape of a cylinder, the sliding block is in the shape of a ball, and the internal tube is fixedly connected with the sliding block.

[0013] Preferably, the sealing structure comprises a sealing layer, a first gas conveying pipe, a second gas conveying pipe and an air bag, outer walls of the sealing layer are pasted on one side of a supporting layer, the first gas conveying pipe is fixed at the bottom end of the sealing layer, the second gas conveying pipe is fixed at the middle position of the first gas conveying pipe, and the air bag is fixed at the top end of the second gas conveying pipe.

[0014] Preferably, the sealing layer is provided with two groups, and the two groups of sealing layers are symmetrically distributed.

[0015] Preferably, the sealing layer is in a hollow circular ring shape, and the inside of the sealing layer, the first gas conveying pipe, the second gas conveying pipe and the air bag are communicated.

[0016] The mud valve rubber core provided by the utility model has the advantages that:

[0017] The sliding structure is arranged, the surface layer has good sealing performance, the supporting layer has good stability and supporting performance, when the gate plate contacts the sliding block, the sliding block is received in the groove, the sliding block has a smooth surface, the mud is not easy to stay on the surface, the friction between the contact points is reduced, the gap between the gate plate and the surface layer is formed, the jamming phenomenon is reduced, the device has the anti-jamming function, and the practicality of the mud valve rubber core is improved.

[0018] The sealing structure is arranged, the surface layer and the air bag have good flexibility, the gate plate abuts against and extrudes the air bag, the air in the air bag enters the surface layer, the surface layer is expanded, the contact surface between the gate plate and the surface layer is sealed, the device has good sealing function, and the sealing performance of the mud valve rubber core is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a sectional three-dimensional schematic view of the utility model;

[0020] Figure 2 It is a sectional three-dimensional schematic view of the utility model; Figure 1 It is an enlarged schematic view of A;

[0021] Figure 3 It is a three-dimensional enlarged schematic view of the sealing structure of the utility model;

[0022] Figure 4 It is a three-dimensional enlarged schematic view of the local sliding structure of the utility model;

[0023] Figure 5 It is a three-dimensional enlarged schematic view of the groove of the utility model;

[0024] Figure 6 It is a three-dimensional schematic view of the utility model.

[0025] The reference signs in the drawings are explained as follows: 1, surface layer; 2, support layer; 3, sealing structure; 301, sealing layer; 302, first gas conveying pipe; 303, second gas conveying pipe; 304, air bag; 4, sliding structure; 401, groove; 402, spring; 403, external pipe; 404, internal pipe; 405, sliding block. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Please refer to Figures 1-6 The present application provides a kind of anti jamming slurry valve rubber core, including surface layer 1.

[0028] Refer to Figure 1 And Figure 3 As shown in the drawings, the inner wall of the surface layer 1 is pasted with the support layer 2, and the bottom of the support layer 2 is fixed with the sealing structure 3. The sealing structure 3 includes the sealing layer 301, the first gas conveying pipe 302, the second gas conveying pipe 303 and the air bag 304. The outer wall of the sealing layer 301 is pasted on one side of the support layer 2, and the bottom end of the sealing layer 301 is fixed with the first gas conveying pipe 302. The middle position of the first gas conveying pipe 302 is fixed with the second gas conveying pipe 303, and the top end of the second gas conveying pipe 303 is fixed with the air bag 304. The sealing layer 301 is provided with two groups, and the two groups of sealing layers 301 are symmetrically distributed. The sealing layer 301 is in the form of a hollow ring. The inside of the sealing layer 301, the first gas conveying pipe 302, the second gas conveying pipe 303 and the air bag 304 is communicated.

[0029] The sealing layer 301 and the air bag 304 have good flexibility. The gate plate resists and extrudes the air bag 304, so that the air in the air bag 304 enters the sealing layer 301, and the sealing layer 301 expands, thereby forming a seal between the gate plate and the contact surface of the surface layer 1, and realizing the good sealing function of the device.

[0030] Refer to Figure 2 And Figure 4As shown, the top of the support layer 2 is welded with a sliding structure 4, which includes a groove 401, a spring 402, an external tube 403, an internal tube 404 and a sliding block 405, the groove 401 is fixed on the top of the support layer 2, the inner wall of the groove 401 is fixed with the spring 402, the spring 402 is penetrated by the external tube 403, the internal tube 404 is arranged in the external tube 403, one side of the internal tube 404 is fixed with the sliding block 405, the grooves 401 are symmetrically distributed, there are six groups of the grooves 401, the groove 401 is fixedly connected with the external tube 403, the groove 401 is not connected with the sliding block 405, the spring 402 is fixedly connected with the sliding block 405, the external tube 403 is slidingly connected with the internal tube 404, the internal tube 404 is in a cylindrical shape, the sliding block 405 is in a spherical shape, and the internal tube 404 is fixedly connected with the sliding block 405.

[0031] The surface layer 1 has good sealing performance, the support layer 2 has good stability and support performance, when the gate plate contacts the sliding block 405, the sliding block 405 is collected into the groove 401, the sliding block 405 has a smooth surface, the mud is not easy to stay on the surface, and the friction between the contact points of the gate plate is reduced, and the gap between the gate plate and the surface layer 1 is generated, thereby reducing the jamming phenomenon, and the device has the function of preventing jamming.

[0032] In summary, as shown in the figure, Figures 1-6 The mud valve rubber core is used, the gate plate enters the inside of the surface layer 1 through the gap of the surface layer 1, and when the gate plate contacts the sliding block 405, the sliding block 405 drives the internal tube 404 to slide into the inside of the external tube 403, and at the same time drives the spring 402 to be compressed and recovered, the sliding block 405 is in a spherical shape, when the sliding block 405 is completely in the inside of the groove 401, a gap is generated between the gate plate, the groove 401 and the sliding block 405, and the sliding block 405 has the performance of not easy to stick mud and good lubricity, such as polytetrafluoroethylene, polyethylene, polypropylene, polypropylene, etc., which can prevent the gate plate from being jammed with the surface layer 1, when the gate plate contacts the air bag 304, the gate plate extrudes the air bag 304, the air in the air bag 304 is extruded into the inside of the sealing layer 301 through the second air pipe 303 and the first air pipe 302, the sealing layer 301 is expanded, the top of the expanded sealing layer 301 extends to the outside of the surface layer 1 and is attached to the gate plate, so that the gate plate and the surface layer 1 have good sealing performance, the surface layer 1 is a rubber layer, the support layer 2 is a metal layer, the mud valve is driven by the lifting of the valve stem to move the gate plate up and down, thereby controlling the flow and flow direction of the medium, when the valve is closed, the gate plate is lowered to the valve seat to form a seal; when the valve is opened, the gate plate is raised to allow the medium to flow.

[0033] Although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A kind of anti-sticking slurry valve rubber core, including surface layer (1); Its characterized in that: The inner wall of the surface layer (1) is pasted with support layer (2); The bottom of the support layer (2) is fixed with sealing structure (3); The top of the support layer (2) is welded with sliding structure (4), the sliding structure (4) includes groove (401), spring (402), external tube (403), internal tube (404) and slider (405), the groove (401) is fixed to the top of support layer (2), the inner wall of the groove (401) is fixed with spring (402), the inside of the spring (402) is penetrated by external tube (403), the inside of the external tube (403) is provided with internal tube (404), one side of the internal tube (404) is fixed with slider (405).

2. A stick prevention slurry valve rubber core according to claim 1, characterized in that: The groove (401) is symmetrically distributed, and the groove (401) is provided with six groups.

3. A non-stalling slurry valve spool as defined in claim 1 wherein: The groove (401) is fixedly connected with the external tube (403), and the groove (401) is not connected with the slider (405) in contact.

4. The anti-stiction slurry valve cup of claim 1, wherein: The spring (402) is fixedly connected with the slider (405), and the external tube (403) is slidingly connected with the internal tube (404).

5. The anti-stiction slurry valve cup of claim 1, wherein: The internal tube (404) is cylindrical, the slider (405) is spherical, and the internal tube (404) is fixedly connected with the slider (405).

6. A non-stalling slurry valve spool according to claim 1, wherein: The sealing structure (3) includes sealing layer (301), first gas pipe (302), second gas pipe (303) and air bag (304), the outer wall of the sealing layer (301) is pasted on one side of the support layer (2), the bottom end of the sealing layer (301) is fixed with the first gas pipe (302), the middle position of the first gas pipe (302) is fixed with the second gas pipe (303), and the top end of the second gas pipe (303) is fixed with the air bag (304).

7. A non-stalling slurry valve spool as defined in claim 6 wherein: The sealing layer (301) is provided with two groups, and the two groups of sealing layer (301) are symmetrically distributed.

8. A non-stalling slurry valve spool according to claim 6, wherein: The sealing layer (301) is in the form of hollow ring, and the inside of the sealing layer (301), the first gas pipe (302), the second gas pipe (303) and the air bag (304) are communicated.

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