An oil extraction valve plate leak-proof structure

Abstract

The utility model relates to valve plate prevent external leakage technical field, concretely is a kind of petroleum exploitation valve valve plate prevent external leakage structure, including detachably connected on the sealing block of valve body upper surface, the inside sliding connection of sealing block has valve plate main body, the inside movable joint of valve body has two pressurizing mechanisms, the pressurizing mechanism includes extrusion ring, half-arc extrusion block and guide rod, extrusion ring movable movable joint is in the inside of valve body, in the utility model, the component force is realized by relative motion, so that extrusion ring is extruded by horizontal force, the mode of this inclined plane cooperation can ensure that power is evenly transmitted to extrusion ring, and then make valve plate main body receive uniform pressure, enhance sealing effect, effectively prevent oil external leakage, the movement range of containing groove still limits extrusion ring, ensure that it moves stably in predetermined track, avoid the sealing failure caused by uneven power or position deviation.

Description

Technical Field

[0001] This utility model relates to the field of valve plate anti-external leakage technology, specifically an anti-external leakage structure for an oil extraction valve plate. Background Technology

[0002] The valve plate anti-leakage structure is used to increase the sealing between the valve plate and the valve. Refer to announcement number CN219493085U, which describes a valve plate for oil extraction. It includes a valve plate body and a connecting groove formed in the valve plate body. The outer ring of the valve plate body has symmetrically formed mounting ring grooves on both sides, and an air bladder ring is fixed inside the mounting ring groove. The air bladder ring is connected to the connecting groove through an air passage. The top of the connecting groove has a fixing groove for connecting a valve stem, and the middle of the connecting groove has a threaded groove. A screw rod is threaded into the threaded groove, and a connecting rod is telescopically connected to the top of the screw rod. A piston block is installed at the lower end of the screw rod.

[0003] Although the above-mentioned device achieves sealing by inflating the air bladder, this structure is not stable enough. The air bladder is easily damaged by friction from the valve body or valve plate, making the damaged area susceptible to corrosion from oil. After leakage, it cannot properly assist in sealing, resulting in reduced reliability. Utility Model Content

[0004] The purpose of this utility model is to provide a valve plate anti-leakage structure for oil extraction valves to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An external leakage prevention structure for an oil extraction valve plate includes a sealing block detachably connected to the upper surface of the valve body, wherein the valve plate body is slidably connected inside the sealing block;

[0007] The valve body is internally connected to two pressurizing mechanisms. Each pressurizing mechanism includes a compression ring, a semi-circular compression block, and a guide rod. The compression ring is movably connected to the inside of the valve body, and the semi-circular compression block is movably connected to the inside of the valve body, with the semi-circular compression block and the compression ring in close contact. The guide rod is fixedly connected to the upper surface of the semi-circular compression block.

[0008] Furthermore, the valve body has a receiving groove inside and at the corresponding position of the extrusion ring. The receiving groove is used to cooperate with the semi-circular extrusion block to limit the extrusion ring.

[0009] Furthermore, a slot is provided on the upper surface of the sealing block at the corresponding position of the guide rod, and the guide rod passes through the slot.

[0010] Furthermore, the contact surface between the semi-circular extrusion block and the extrusion ring is an inclined surface, and the semi-circular extrusion block can extrude the extrusion ring through the inclined surface.

[0011] Furthermore, the upper surface of the sealing block is threaded with mounting bolts, and the sealing block is detachably connected to the valve body via the mounting bolts.

[0012] Furthermore, a sealing gasket is adhered to the outer surface of the valve plate body, a screw is rotatably connected to the upper surface of the valve plate body, and a handwheel is fixedly connected to the upper end of the screw.

[0013] Furthermore, the screw and the sealing block are threadedly connected, a limit block is fixedly connected to the upper surface of the sealing block, a fastening knob is threadedly connected to the upper surface of the limit block, and the end of the fastening knob abuts against the guide rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. When the semi-circular extrusion block moves downward inside the valve body, the inclined surface slides relative to the inclined surface of the extrusion ring. Through relative movement, the force is distributed, and the extrusion ring is subjected to horizontal force. This inclined surface cooperation method can ensure that the force is evenly transmitted to the extrusion ring, thereby subjecting the valve plate body to uniform pressure, enhancing the sealing effect, effectively preventing oil leakage, and the receiving groove also restricts the movement range of the extrusion ring, ensuring that it moves stably within the predetermined track and avoiding sealing failure caused by uneven force or position deviation.

[0016] 2. The screw is threaded to the sealing block, and the rotational motion is converted into the linear motion of the valve plate body, which pushes the valve plate body to move downward. At this time, the sealing gasket is further deformed under pressure, filling the tiny gap between the valve plate body and the valve body and enhancing the sealing performance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the valve body of this utility model;

[0019] Figure 3 This is a schematic diagram of the pressurization mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the sealing block of this utility model.

[0021] In the diagram: 1. Valve body; 101. Through hole; 102. Mounting hole; 103. Channel; 2. Valve plate body; 201. Sealing gasket; 202. Screw; 203. Handwheel; 3. Sealing block; 301. Limiting block; 302. Fastening knob; 4. Pressurizing mechanism; 401. Semi-arc extrusion block; 402. Guide rod; 403. Extrusion ring; 5. Mounting bolt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 In this embodiment of the utility model, an oil extraction valve plate anti-leakage structure includes a sealing block 3 detachably connected to the upper surface of the valve body 1, and the valve plate body 2 is slidably connected inside the sealing block 3.

[0024] The valve body 1 has two pressurizing mechanisms 4 that are movably connected inside. The pressurizing mechanism 4 includes a compression ring 403, a semi-circular compression block 401, and a guide rod 402. The compression ring 403 is movably connected inside the valve body 1, the semi-circular compression block 401 is movably connected inside the valve body 1, and the semi-circular compression block 401 and the compression ring 403 are in close contact. The guide rod 402 is fixedly connected to the upper surface of the semi-circular compression block 401.

[0025] Specifically, during use, the valve body 1 installs the sealing block 3 through the mounting hole 102, the valve body 1 guides oil through the through hole 101, the valve plate body 2 can cut off the through hole 101 to block the flow of oil, and the valve plate body 2 is squeezed by two pressure mechanisms 4 to make the pressure mechanism 4 and the valve plate body 2 more tightly connected, thereby improving the sealing performance of the valve plate body 2. The guide rod 402 guides the movement of the semi-arc extrusion block 401.

[0026] Example 1

[0027] like Figure 1-4 As shown, a receiving groove is provided inside the valve body 1 at the corresponding position of the extrusion ring 403. The receiving groove is used to cooperate with the semi-arc extrusion block 401 to limit the extrusion ring 403. The contact surface between the semi-arc extrusion block 401 and the extrusion ring 403 is an inclined surface. The semi-arc extrusion block 401 can extrude the extrusion ring 403 through the inclined surface.

[0028] In this embodiment, the receiving groove is configured as a semi-circular extrusion block 401, which provides stable support and guidance. When the semi-circular extrusion block 401 moves downward inside the valve body 1, the inclined surface slides relative to the inclined surface of the extrusion ring 403. Through relative movement, the force is distributed, so that the extrusion ring 403 is subjected to horizontal force. This inclined surface cooperation method can ensure that the force is evenly transmitted to the extrusion ring 403, thereby making the valve plate body 2 subject to uniform pressure, enhancing the sealing effect, and effectively preventing oil leakage. The receiving groove also limits the movement range of the extrusion ring 403, ensuring that it moves stably within the predetermined track and avoiding sealing failure caused by uneven force or position deviation.

[0029] like Figure 1-4 As shown, a sealing gasket 201 is bonded to the outer surface of the valve plate body 2, and a screw 202 is rotatably connected to the upper surface of the valve plate body 2. A handwheel 203 is fixedly connected to the upper end of the screw 202.

[0030] In this embodiment, the sealing gasket 201 bonded to the outer surface of the valve plate body 2 is made of high-performance elastic material, which can fit tightly against the inner wall of the valve body 1 to form the first sealing barrier. When it is necessary to close the valve to block the flow of oil, the screw 202 is rotated by turning the handwheel 203. Since the screw 202 is threadedly connected to the sealing block 3, the rotational motion is converted into the linear motion of the valve plate body 2, pushing the valve plate body 2 to move downward. At this time, the sealing gasket 201 is further deformed under pressure, filling the tiny gap between the valve plate body 2 and the valve body 1, and enhancing the sealing performance.

[0031] Example 2

[0032] Based on Example 1, in order to overcome the problem of the inconvenience of moving the semi-circular extrusion block 401 in Example 1.

[0033] like Figure 1-4 As shown, the upper surface of the sealing block 3 and the guide rod 402 are provided with slots, the guide rod 402 passes through the slots, the screw 202 and the sealing block 3 are threadedly connected, the upper surface of the sealing block 3 is fixedly connected to the limit block 301, the upper surface of the limit block 301 is threadedly connected to the fastening knob 302, and the end of the fastening knob 302 abuts against the guide rod 402.

[0034] In this embodiment, the slot on the sealing block 3 allows the guide rod 402 to pass through it, providing space for the movement of the semi-circular extrusion block 401. When the end of the fastening knob 302 applies force to the guide rod 402, the guide rod 402 moves downward, further causing the semi-circular extrusion block 401 to move downward. This design makes the movement of the semi-circular extrusion block 401 more flexible and convenient, facilitating fine adjustments according to actual working conditions and improving the sealing reliability and operational convenience of the valve.

[0035] like Figure 1-4 As shown, the upper surface of the sealing block 3 is threaded with mounting bolts 5, and the sealing block 3 is detachably connected to the valve body 1 via the mounting bolts 5.

[0036] In this embodiment, the mounting bolt 5 is tightly fitted with the threaded hole on the upper surface of the sealing block 3. Tightening the mounting bolt 5 will firmly fix the sealing block 3 to the valve body 1, ensuring the tightness and stability of the connection. When it is necessary to maintain, replace or adjust the sealing block 3 or the valve plate body 2, simply loosen the mounting bolt 5 to quickly remove the sealing block 3.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A valve plate anti-leakage structure for an oil extraction valve, comprising a sealing block (3) detachably connected to the upper surface of a valve body (1), wherein a valve plate body (2) is slidably connected inside the sealing block (3); Its features are, The valve body (1) is internally connected to two pressurizing mechanisms (4), and the pressurizing mechanism (4) includes: The compression ring (403) is movably connected to the inside of the valve body (1); A semi-circular extrusion block (401) is movably connected to the inside of the valve body (1), and the semi-circular extrusion block (401) and the extrusion ring (403) are in close contact; The guide rod (402) is fixedly connected to the upper surface of the semi-circular extrusion block (401).

2. The anti-leakage structure for the valve plate of an oil extraction valve according to claim 1, characterized in that, The valve body (1) has a receiving groove inside and at the corresponding position of the extrusion ring (403). The receiving groove is used to cooperate with the semi-circular extrusion block (401) to limit the extrusion ring (403).

3. The anti-leakage structure for the valve plate of an oil extraction valve according to claim 1, characterized in that, The upper surface of the sealing block (3) and the guide rod (402) are provided with slots, and the guide rod (402) passes through the slots.

4. The anti-leakage structure for the valve plate of an oil extraction valve according to claim 1, characterized in that, The contact surface between the semi-circular extrusion block (401) and the extrusion ring (403) is an inclined surface, and the semi-circular extrusion block (401) can extrude the extrusion ring (403) through the inclined surface.

5. The anti-leakage structure for the valve plate of an oil extraction valve according to claim 1, characterized in that, The upper surface of the sealing block (3) is threaded with mounting bolts (5), and the sealing block (3) is detachably connected to the valve body (1) via the mounting bolts (5).

6. The anti-leakage structure for the valve plate of an oil extraction valve according to claim 1, characterized in that, A sealing gasket (201) is bonded to the outer surface of the valve plate body (2), and a screw (202) is rotatably connected to the upper surface of the valve plate body (2). A handwheel (203) is fixedly connected to the upper end of the screw (202).

7. The anti-leakage structure for the valve plate of an oil extraction valve according to claim 6, characterized in that, The screw (202) and the sealing block (3) are threadedly connected. A limit block (301) is fixedly connected to the upper surface of the sealing block (3). A fastening knob (302) is threadedly connected to the upper surface of the limit block (301). The end of the fastening knob (302) abuts against the guide rod (402).

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