Bidirectional self-sealing check valve suitable for high-viscosity medium

Abstract

The bidirectional self-sealing check valve suitable for the high-viscosity media comprises a check valve body, a fixing ring is fixedly installed outside an inlet and an outlet of the check valve body, a threaded cylinder is fixedly installed inside the fixing ring, a fixing box is arranged on the right side face of the threaded cylinder, and the threaded cylinder is fixedly installed in the fixing box. And a conveying pipe is fixedly connected to the right side surface of the fixed box. According to the two-way self-sealing check valve suitable for the high-viscosity medium, by arranging the extending mounting assembly, when the two-way self-sealing check valve is used, a rotating gear is rotated, and the rotating gear is meshed with an outer gear ring, so that an external thread conveying pipe is driven to rotate through the outer gear ring, and the external thread conveying pipe is in butt joint with a threaded cylinder; the thread of the external thread conveying pipe gradually extends into the threaded cylinder, so that the distance between the conveying pipe and the check valve body can be filled by the external thread conveying pipe, and the check valve body can be rapidly installed between pipelines.

Description

Technical Field

[0001] This utility model relates to the field of check valve technology, specifically a bidirectional self-sealing check valve suitable for high viscosity media. Background Technology

[0002] A two-way self-sealing check valve may refer to a valve that can prevent backflow in both flow directions and can automatically seal; however, check valves are usually unidirectional, and two-way check valves may require special design, such as two valve discs or special structures, to allow closure in both flow directions.

[0003] High-viscosity media refer to substances such as oil, mud, and colloids. These media have poor flowability and are prone to residue or blockage inside valves, so they require special consideration during design. For example, the internal structure of the valve should avoid dead corners, the material may need to be wear-resistant or corrosion-resistant, and the actuation method may require greater force or a special design. "Self-sealing" usually refers to the valve's ability to automatically seal without external pressure, which may be achieved through the pressure of the medium itself or the design of the valve disc, such as a spring-assisted valve disc, which automatically closes when there is no flow to ensure a seal. Therefore, in terms of the installation and maintenance of check valves, structures that are easier to disassemble and clean may be needed because high-viscosity media are prone to residue, and regular maintenance is important.

[0004] According to a utility model patent with Chinese patent application number 202020408658.7, a check valve can be quickly installed and disassembled, improving the installation efficiency. However, when this check valve is installed between pipelines, since both ends of the check valve cannot extend or retract, the operator needs to cut off one end of the pipeline and fix it to the pipeline transporting high-viscosity media during installation, further reducing the installation efficiency. Therefore, it is necessary to propose a bidirectional self-sealing check valve suitable for high-viscosity media to solve the above-mentioned problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a bidirectional self-sealing check valve suitable for high-viscosity media. It has advantages such as convenient installation and adjustment based on the distance between the check valve and the delivery pipeline, thus solving the problem in the prior art where it is inconvenient to install and adjust based on the distance between the check valve and the delivery pipeline.

[0006] To achieve the above-mentioned purpose of convenient installation and adjustment based on the distance between the check valve and the delivery pipeline, this utility model provides the following technical solution: a bidirectional self-sealing check valve suitable for high viscosity media, including a check valve body, a fixing ring fixedly installed on the outside of the inlet and outlet of the check valve body, a threaded cylinder fixedly installed inside the fixing ring, a fixing box provided on the right side of the threaded cylinder, a delivery pipe fixedly connected to the right side of the fixing box, a positioning component movably installed inside the fixing ring, and an extension installation component movably installed inside the fixing box;

[0007] The extended mounting assembly includes a rotating gear, which is movably mounted on the top of the fixed box. An external gear ring meshes with each other on the outer surface of the rotating gear. An external threaded delivery pipe is provided inside the external gear ring and is threadedly connected to the inside of the threaded cylinder.

[0008] Furthermore, the positioning component includes a knob, which is movably mounted on the outside of the fixing ring. A threaded rotating rod is provided on one side of the knob, and a positioning cylinder is externally threaded onto the threaded rotating rod.

[0009] Furthermore, a limiting block is provided on the outside of the positioning cylinder, and a limiting groove is formed inside the fixing ring, with the limiting block slidably installed inside the limiting groove.

[0010] Furthermore, the external threaded conveying pipe is provided with positioning holes that are compatible with the positioning cylinder.

[0011] Furthermore, an extension conveying cylinder is provided on one side of the externally threaded conveying pipe, the extension conveying cylinder is threadedly connected to the inside of the conveying pipe, and a second sealing ring is provided on the right side of the extension conveying cylinder.

[0012] Furthermore, a first sealing ring is provided on one side of the threaded cylinder, and a rotating shaft is provided inside the rotating gear.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] This bidirectional self-sealing check valve, suitable for high-viscosity media, features an extended installation assembly. During use, the rotation of a rotating gear engages with an external gear ring, which in turn drives the external threaded delivery pipe to rotate. This aligns the external threaded delivery pipe with a threaded cylinder, allowing the threads of the delivery pipe to gradually extend into the interior of the cylinder. This fills the gap between the delivery pipe and the check valve body, enabling rapid installation of the check valve between pipelines. This improves installation and maintenance efficiency and solves the problem in the prior art where installation adjustments based on the distance between the check valve and the delivery pipeline were inconvenient.

[0015] This bidirectional self-sealing check valve, suitable for high-viscosity media, features a positioning component. During use, rotating the knob further drives the threaded rod to rotate. Due to the limiting effect of the limiting groove on the limiting block and the positioning cylinder, the positioning cylinder can move threadedly on the outer surface of the threaded rod. Consequently, the positioning cylinder is positioned outside the external threaded delivery pipe, further securing the check valve body and improving the stability of the check valve installation. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the check valve structure of this utility model;

[0017] Figure 2 This is a side sectional view of the fixing ring structure of this utility model;

[0018] Figure 3 This is a front sectional view of the fixed box structure of this utility model.

[0019] In the diagram: 1. Check valve body; 2. Retaining ring; 3. Threaded cylinder; 4. Fixing box; 5. Delivery pipe; 6. Positioning assembly; 601. Knob; 602. Threaded rotating rod; 603. Positioning cylinder; 604. Limiting groove; 605. Limiting block; 7. Extension mounting assembly; 701. Rotating gear; 702. Rotating shaft; 703. External gear ring; 704. External threaded delivery pipe; 8. First sealing ring; 9. Second sealing ring; 10. Extension delivery cylinder. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0021] Please see Figure 1-3 In this embodiment, a bidirectional self-sealing check valve suitable for high viscosity media includes a check valve body 1. A fixing ring 2 is fixedly installed on the outside of the inlet and outlet of the check valve body 1. A threaded cylinder 3 is fixedly installed inside the fixing ring 2. A fixing box 4 is provided on the right side of the threaded cylinder 3. A delivery pipe 5 is fixedly connected to the right side of the fixing box 4. A positioning component 6 is movably installed inside the fixing ring 2. An extension installation component 7 is movably installed inside the fixing box 4.

[0022] The extended mounting assembly 7 includes a rotating gear 701. The rotating gear 701 is movably mounted on the top of the fixed box 4. An external gear ring 703 meshes with each other on the outer surface of the rotating gear 701. An external threaded conveying pipe 704 is provided inside the external gear ring 703. The external threaded conveying pipe 704 is threadedly connected to the inside of the threaded cylinder 3.

[0023] In the implementation of this case, by setting up the extension installation component 7, during use, the rotation of the rotating gear 701 causes the rotating gear 701 to mesh with the external gear ring 703, thereby driving the external threaded delivery pipe 704 to rotate through the external gear ring 703. This connects the external threaded delivery pipe 704 with the threaded cylinder 3, allowing the threads of the external threaded delivery pipe 704 to gradually extend into the interior of the threaded cylinder 3. This allows the external threaded delivery pipe 704 to fill the gap between the delivery pipe 5 and the check valve body 1, enabling the check valve body 1 to be quickly installed between pipelines. This improves the efficiency of installation and maintenance of the check valve body 1 and solves the problem in the background technology where it is inconvenient to adjust the installation according to the distance between the check valve and the delivery pipeline.

[0024] This bidirectional self-sealing check valve, suitable for high-viscosity media, features a positioning component 6. During use, rotating the knob 601 further drives the threaded rod 602 to rotate. Due to the limiting effect of the limiting groove 604 on the limiting block 605 and the positioning cylinder 603, the positioning cylinder 603 can move threadedly on the outer surface of the threaded rod 602. Consequently, the positioning cylinder 603 is positioned outside the external threaded delivery pipe 704, further securing the check valve body 1 and enhancing the stability of the check valve body 1 installation.

[0025] In the implementation of the case, by setting the first sealing ring 8 and the second sealing ring 9, the connection between the threaded cylinder 3 and the check valve body 1 is well sealed, and the second sealing ring 9 can improve the sealing between the threaded extension conveying cylinder 10 and the conveying pipe 5.

[0026] When implementing this procedure, please follow these steps:

[0027] 1) First, connect the external threaded delivery pipe 704 to the threaded cylinder 3;

[0028] 2) Then, the delivery pipe 5 is connected and fixed to the threaded cylinder 3 by extending the mounting assembly 7;

[0029] 3) The external threaded delivery pipe 704 is further fixedly installed inside the threaded cylinder 3 by the positioning component 6;

[0030] 4) Finally, connect and fix the other end of the check valve body 1 to the pipeline.

[0031] In summary, this bidirectional self-sealing check valve suitable for high-viscosity media, by setting the extension installation component 7, allows for operation where the rotating gear 701 meshes with the external gear ring 703, thereby driving the external threaded delivery pipe 704 to rotate. This connects the external threaded delivery pipe 704 to the threaded cylinder 3, allowing the threads of the external threaded delivery pipe 704 to gradually extend into the interior of the threaded cylinder 3. This ensures that the distance between the delivery pipe 5 and the check valve body 1 is filled by the external threaded delivery pipe 704, enabling the check valve body 1 to be quickly installed between pipelines. This improves the efficiency of installation and maintenance of the check valve body 1 and solves the problem in the prior art where it was inconvenient to adjust the installation based on the distance between the check valve and the delivery pipeline.

[0032] Furthermore, by setting the positioning component 6, when in use, by rotating the knob 601, the knob 601 will further drive the threaded rod 602 to rotate. Due to the limiting effect of the limiting groove 604 on the limiting block 605 and the positioning cylinder 603, the positioning cylinder 603 can move threadedly on the outer surface of the threaded rod 602, thereby positioning the positioning cylinder 603 outside the external threaded delivery pipe 704, further fixing the check valve body 1 and improving the firmness of the installation of the check valve body 1.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bidirectional self-sealing check valve suitable for high-viscosity media, comprising a check valve body (1), characterized in that: A fixing ring (2) is fixedly installed on the outside of the inlet and outlet of the check valve body (1). A threaded cylinder (3) is fixedly installed inside the fixing ring (2). A fixing box (4) is provided on the right side of the threaded cylinder (3). A delivery pipe (5) is fixedly connected to the right side of the fixing box (4). A positioning component (6) is movably installed inside the fixing ring (2). An extension installation component (7) is movably installed inside the fixing box (4). The extended mounting assembly (7) includes a rotating gear (701), the rotating gear (701) is movably mounted on the top of the fixed box (4), the outer surface of the rotating gear (701) is meshed with an external gear ring (703), the interior of the external gear ring (703) is provided with an external threaded conveying pipe (704), and the external threaded conveying pipe (704) is threadedly connected to the interior of the threaded cylinder (3).

2. A bidirectional self-sealing check valve suitable for use with high viscosity media according to claim 1, wherein: The positioning component (6) includes a knob (601), the knob (601) is movably mounted on the outside of the fixing ring (2), a threaded rotating rod (602) is provided on one side of the knob (601), and a positioning cylinder (603) is threadedly connected to the outside of the threaded rotating rod (602).

3. A bidirectional self-sealing check valve suitable for use with high viscosity media according to claim 2, wherein: The positioning cylinder (603) is provided with a limiting block (605) on its outside, and the fixing ring (2) is provided with a limiting groove (604) inside, and the limiting block (605) is slidably installed inside the limiting groove (604).

4. A bidirectional self-sealing check valve suitable for use with high viscosity media according to claim 3, wherein: The external threaded delivery pipe (704) is provided with positioning holes that are compatible with the positioning cylinder (603).

5. A bidirectional self-sealing check valve suitable for use with high viscosity media according to claim 1, wherein: An extension conveying cylinder (10) is provided on one side of the external threaded conveying pipe (704). The extension conveying cylinder (10) is threadedly connected to the inside of the conveying pipe (5). A second sealing ring (9) is provided on the right side of the extension conveying cylinder (10).

6. A bidirectional self-sealing check valve suitable for use with high viscosity media according to claim 1, wherein: A first sealing ring (8) is provided on one side of the threaded cylinder (3), and a rotating shaft (702) is provided inside the rotating gear (701).

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