Valve body assembly of slurry pump

Abstract

The utility model relates to the technical field of valve body assemblies, in particular to a valve body assembly of a mud pump, which comprises a valve rubber sheet, a nut fixing groove is arranged on the top surface of the valve rubber sheet, the inside of the nut fixing groove is fixedly connected with the surface of a bolt bar, and the surface of the bolt bar penetrates through a top surface screw hole of a valve gland. The surface of the bottom of the valve gland is inserted into the valve rubber, the surface of the bolt rod is in threaded connection with the interior of the knob nut, and the surface of the valve seat is sleeved with an inner ring of the valve gland. The valve body assembly of the mud pump has the advantages that the surface of the bolt rod is fixedly connected with the surface of the nut fixing groove, the surface of the nut fixing groove penetrates through the screw hole in the top face of the valve gland, and when the nut is rotated manually, sealing is formed between the valve rubber and the valve gland; therefore, the valve seat and the valve body are sealed in the valve rubber and the valve gland, and abrasion between the valve seat and the valve body due to the fact that dust enters a gap between the valve seat and the valve body is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of valve body assemblies, in particular to a valve body assembly of a mud pump. Background Art

[0002] The valve assembly includes the valve body, valve gland, valve rubber, valve seat, upright frame, and valve spring. The valve assembly is an important component of the hydraulic end of the drilling mud pump, which plays a role in making the mud pass in one direction. The valve body and valve seat are made of high-quality alloy steel that exceeds the standards of the petroleum industry.

[0003] However, in the prior art, the valve body assembly of the existing mud pump is very easy to get clogged or damaged due to long-term use, and if dust or sand enters the gap between the valve body and the valve seat, it will cause wear between the two, so the two need to be sealed during operation.

[0004] Therefore, we need a valve body assembly for a mud pump to solve the sealing problem between the valve body and the valve seat of the existing mud pump cylinder sleeve, and also to reduce the wear between the valve body and the valve seat. Utility Model Content

[0005] The utility model aims to provide a valve body assembly of a mud pump to solve the sealing problem between the valve body and the valve seat of the existing mud pump cylinder sleeve proposed in the above background technology, and also to reduce the wear between the valve body and the valve seat.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a valve body assembly of a mud pump, including a valve rubber, a nut fixing groove is provided on the top surface of the valve rubber, the surface of the bolt rod is fixedly connected to the inside of the nut fixing groove, the surface of the bolt rod passes through the screw hole on the top surface of the valve pressure cover, the bottom surface of the valve pressure cover is inserted into the inside of the valve rubber, the surface of the bolt rod is threadedly connected to the inside of the knob nut, the inner ring of the valve pressure cover is sleeved on the surface of the valve seat, and the inside of the valve rubber is movably connected to the surface of the valve body.

[0007] Preferably, the cross-section of the nut fixing groove is arranged in a "convex" shape, the number of the nut fixing grooves is five, and the five nut fixing grooves are arranged in a circular array along the center point of the valve rubber.

[0008] Preferably, the inner ring of the valve body is sleeved on the surface of the valve seat, the outer surface of the valve seat is provided with an arc-shaped groove, the interior of the arc-shaped groove is engaged with the end surface of the protrusion, the surface of the protrusion is movably connected to the surface of the second spring groove, the second spring groove is arranged on the inner surface of the valve body, and a return spring is arranged inside the second spring groove.

[0009] Preferably, the end of the protrusion is arranged in an "arc shape", the number of the protrusions arranged is two, and the two protrusions are symmetrically arranged along the center point of the valve body.

[0010] Preferably, a limit slot is provided on the outer surface of the valve seat, a plug-in block is plugged into the surface of the limit slot, the surface of the plug-in block is movably connected to the surface of the first spring slot, the first spring slot is arranged on the inner surface of the valve body, and a compression spring is arranged inside the first spring slot.

[0011] Preferably, the valve rubber and the valve gland are both made of nitrile rubber.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: by fixing the surface of the bolt rod to the surface of the nut fixing groove, the surface of the nut fixing groove is passed through the top screw hole of the valve cover, and when the nut is manually rotated, a seal is formed between the valve rubber and the valve cover, thereby sealing the valve seat and the valve body inside the valve rubber and the valve cover, preventing dust from entering the gap between the valve seat and the valve body and causing wear between the two; further solving the problem of sealing between the valve body and the valve seat of the existing mud pump cylinder sleeve, and also reducing the wear between the valve body and the valve seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a three-dimensional schematic diagram of the structure section of the utility model;

[0015] Figure 3 It is a top view schematic diagram of the structure of the utility model;

[0016] Figure 4 The utility model structure Figure 2 A in the middle is an enlarged schematic diagram;

[0017] Figure 5 The utility model structure Figure 2 Middle B is an enlarged schematic diagram;

[0018] Figure 6 The utility model structure Figure 2 Figure C is an enlarged schematic diagram.

[0019] In the figure: valve rubber 1, valve pressure cover 2, valve seat 3, valve body 4, nut fixing slot 5, bolt rod 6, knob nut 7, first spring slot 8, compression spring 9, limit slot 10, plug-in block 11, second spring slot 12, return spring 13, arc slot 14, and protrusion 15. DETAILED DESCRIPTION

[0020] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit 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.

[0021] Embodiment 1

[0022] See also Figure 1-Figure 6 The utility model provides a technical solution: a valve body assembly of a mud pump, comprising a valve rubber 1, a nut fixing groove 5 is provided on the top surface of the valve rubber 1, the surface of the nut fixing groove 5 is fixedly connected to the surface of a bolt rod 6, the surface of the bolt rod 6 passes through the top surface screw hole of the valve pressure cover 2, the bottom surface of the valve pressure cover 2 is inserted into the interior of the valve rubber 1, the surface of the bolt rod 6 is screwed to the interior of the knob nut 7, the inner ring of the valve pressure cover 2 is sleeved on the surface of the valve seat 3, and the interior of the valve rubber 1 is movably connected to the surface of the valve body 4, by fixing the surface of the bolt rod 6 to the surface of the nut fixing groove 5, and passing the surface of the nut fixing groove 5 through the top surface screw hole of the valve pressure cover 2, when the nut 7 is manually rotated, a seal is formed between the valve rubber 1 and the valve pressure cover 2, thereby sealing the valve seat 3 and the valve body 4 in the interior of the valve rubber 1 and the valve pressure cover 2, preventing dust from entering the gap between the valve seat 3 and the valve body 4 and causing wear between the two.

[0023] Embodiment 2

[0024] See attached Figures 1 to 6 On the basis of the first embodiment, in order to realize the separation between the outer sleeve 3 and the inner sleeve 4, the inner ring of the valve body 4 is sleeved on the surface of the valve seat 3, and the outer surface of the valve seat 3 is provided with an arc-shaped groove 14, the inner part of the arc-shaped groove 14 is engaged with the end surface of the protrusion 15, and the surface of the protrusion 15 is movably connected to the surface of the second spring groove 12, and the second spring groove 12 is provided on the inner surface of the valve body 4, and a return spring 13 is provided inside the second spring groove 12;

[0025] When the valve body 4 is sleeved on the surface of the valve seat 3, the end of the protrusion 15 is clamped into the arc-shaped groove 14 by the elastic force of the return spring 13, so that the valve body 4 is firmly fixed inside the valve seat 3, which plays a limiting role between the two. If the valve body 4 is pulled upward, the protrusion 15 is compressed into the inside of the second spring groove 12, so that the valve seat 3 and the valve body 4 can be disassembled and separated.

[0026] Embodiment 3

[0027] See attached Figures 1 to 6 On the basis of the second embodiment, in order to achieve the sealing effect of the bottom ends of the outer sleeve 3 and the inner sleeve 4, a limit card groove 10 is provided on the outer surface of the valve seat 3, and a plug-in block 11 is plugged into the surface of the limit card groove 10. The surface of the plug-in block 11 is movably connected to the surface of the first spring groove 8. The first spring groove 8 is provided on the inner surface of the valve body 4, and a compression spring 9 is provided inside the first spring groove 8;

[0028] The elastic force of the compression spring 9 pushes the plug-in block 11 to move inside the first spring groove 8, so that the end of the plug-in block 11 is inserted into the inside of the limiting slot 10, so that the valve seat 3 is locked inside the valve body 4, thereby facilitating the separation and disassembly between the valve seat 3 and the valve body 4, and is beneficial to the maintenance and replacement of the valve seat 3 and the valve body 4.

[0029] In actual use, by fixing the surface of the bolt rod 6 to the surface of the nut fixing groove 5, the surface of the nut fixing groove 5 is passed through the top screw hole of the valve cover 2, and when the nut 7 is manually rotated, a seal is formed between the valve rubber 1 and the valve cover 2, so that the valve seat 3 and the valve body 4 are sealed inside the valve rubber 1 and the valve cover 2, so as to prevent dust from entering the gap between the valve seat 3 and the valve body 4 and causing wear between the two. When the valve body 4 is sleeved on the surface of the valve seat 3, the end of the protrusion 15 is clamped into the arc groove 14 by the elastic force of the return spring 13, so that The valve body 4 is firmly fixed inside the valve seat 3 and serves as a limit between the two. If the valve body 4 is pulled upward, the protrusion 15 is compressed into the inside of the second spring groove 12, so that the valve seat 3 and the valve body 4 can be disassembled and separated. The elastic force of the compression spring 9 pushes the plug-in block 11 to move inside the first spring groove 8, so that the end of the plug-in block 11 is inserted into the inside of the limiting slot 10, so that the valve seat 3 is locked inside the valve body 4, thereby facilitating the separation and disassembly of the valve seat 3 and the valve body 4, and facilitating the maintenance and replacement of the valve seat 3 and the valve body 4.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve body assembly of a mud pump, comprising a valve rubber (1), characterized in that: The top surface of the valve rubber (1) is provided with a nut fixing groove (5), the inside of the nut fixing groove (5) is fixedly connected to the surface of a bolt rod (6), the surface of the bolt rod (6) passes through the top screw hole of the valve pressure cover (2), the bottom surface of the valve pressure cover (2) is inserted into the inside of the valve rubber (1), the surface of the bolt rod (6) is screwed to the inside of the knob nut (7), the inner ring of the valve pressure cover (2) is sleeved on the surface of the valve seat (3), and the inside of the valve rubber (1) is movably connected to the surface of the valve body (4).

2. The valve body assembly of a mud pump according to claim 1, characterized in that: The cross section of the nut fixing groove (5) is arranged in a "convex" shape, the number of the nut fixing grooves (5) is five, and the five nut fixing grooves (5) are arranged in a circular array along the center point of the valve rubber (1).

3. The valve body assembly of a mud pump according to claim 1, characterized in that: The inner ring of the valve body (4) is sleeved on the surface of the valve seat (3); the outer surface of the valve seat (3) is provided with an arc-shaped slot (14); the inner part of the arc-shaped slot (14) is engaged with the end surface of the protrusion (15); the surface of the protrusion (15) is movably connected to the surface of the second spring slot (12); the second spring slot (12) is arranged on the inner surface of the valve body (4); and a return spring (13) is arranged inside the second spring slot (12).

4. The valve body assembly of a mud pump according to claim 3, characterized in that: The end of the protrusion (15) is arranged in an "arc shape", the number of the protrusions (15) is two, and the two protrusions (15) are symmetrically arranged along the center point of the valve body (4).

5. The valve body assembly of a mud pump according to claim 1, characterized in that: The outer surface of the valve seat (3) is provided with a limit slot (10), the surface of the limit slot (10) is plugged with a plug-in block (11), the surface of the plug-in block (11) is movably connected to the surface of the first spring slot (8), the first spring slot (8) is arranged on the inner surface of the valve body (4), and a compression spring (9) is arranged inside the first spring slot (8).

6. The valve body assembly of a mud pump according to claim 1, characterized in that: The valve rubber (1) and the valve gland (2) are both made of nitrile rubber.

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