Threaded soft sealing gate valve

Abstract

The utility model relates to the related field, in particular to a threaded soft sealing gate valve which comprises a gate valve body, a threaded connector, an annular convex body, a positioning groove, a first sealing ring, a threaded groove, a threaded cylinder, a second sealing ring, an expansion opening, a third sealing ring, a micro spring, anti-skid stripes and the like. The first sealing ring and the second sealing ring are arranged, reinforced soft sealing protection is provided for the inner ring and the outer ring of the pipeline through the first sealing ring and the second sealing ring respectively, the threaded cylinder can apply radial pressure to the second sealing ring, and the second sealing ring can be attached to the pipeline more stably. The sealing effect of a threaded gate valve connecting pipeline is further improved, the situation of medium leakage is reduced, and the practicability of the threaded gate valve is improved.

Description

Technical Field

[0001] The utility model relates to the field of gate valves, in particular to a threaded soft-sealed gate valve. Background Art

[0002] Threaded gate valve, also often called threaded gate valve, is a valve that seals the flow of media (such as water, gas, etc.) in the pipeline through internal and external threaded connections. It is a type of gate valve and is mainly used for cutting off or connecting pipeline systems. Compared with flange-connected gate valves, threaded gate valves have the advantages of easy installation and small space occupation, and are particularly suitable for control systems of small-diameter pipelines.

[0003] Existing threaded gate valves and pipelines are usually connected by threads, and the sealing effect of the connection is poor. Especially when the conveying pipeline is vibrated by external force or the internal pressure of the pipeline fluctuates, it is easy to further reduce the sealing effect of the connection between the pipeline and the threaded gate valve, which can easily cause medium leakage and reduce the practicality of the threaded gate valve. Summary of the invention

[0004] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a threaded soft-sealed gate valve to solve the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a threaded soft-sealed gate valve, comprising a gate valve body, wherein a threaded connection port is respectively provided on the inner side of the water inlet end and the inner side of the water outlet end of the gate valve body, and an annular convex body is respectively provided on the left and right ends of the inner side of the gate valve body, and the two annular convex bodies are arranged one by one on the inner side of the two threaded connection ports, and a positioning groove for providing positioning for the connecting pipe is provided on the side surface of the annular convex body, and a first sealing ring is embedded in the positioning groove;

[0006] A thread groove is provided on the outer end face of the gate valve body, a threaded barrel is threadedly installed in the thread groove, an expansion opening is provided on the inner side of the joint end of the threaded barrel, and a second sealing ring fitting therewith is provided in the threaded barrel, the second sealing ring is movably embedded in the thread groove, and the second sealing ring passes through the inner side of the thread groove and movably extends into the inner side of the positioning groove.

[0007] Preferably, a third sealing ring is built into the positioning groove, and the third sealing ring is offset from the second sealing ring.

[0008] Preferably, the third sealing ring is connected to the inner wall of the positioning groove via a micro spring.

[0009] Preferably, the vertical cross-section of the second sealing ring is a T-shaped structure, and a T-shaped opening corresponding to the second sealing ring is provided on the inner side of the thread groove.

[0010] Preferably, the outer wall of the free end of the threaded barrel is evenly provided with a plurality of anti-slip stripes along a circular direction.

[0011] Beneficial effects of the utility model:

[0012] The utility model provides a first sealing ring and a second sealing ring, and the first sealing ring and the second sealing ring respectively provide enhanced soft sealing protection for the inner and outer rings of the pipeline, and the threaded barrel can apply radial pressure to the second sealing ring, which helps the second sealing ring to fit the pipeline more smoothly, which is beneficial to further improve the sealing effect of the threaded gate valve connected to the pipeline, reduce the occurrence of medium leakage, and help improve the practicality of the threaded gate valve. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 The utility model Figure 1 A schematic diagram of the structure enlargement in the middle;

[0015] Figure 3 It is a schematic diagram of the anti-skid stripe distribution structure of the utility model.

[0016] Among them: gate valve body-1, threaded connection port-2, annular convex body-3, positioning groove-4, first sealing ring-5, thread groove-6, threaded tube-7, second sealing ring-8, expansion port-9, third sealing ring-10, micro spring-11, anti-slip stripes-12. DETAILED DESCRIPTION

[0017] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0018] like Figure 1 As shown, the utility model provides a threaded soft-sealed gate valve, comprising a gate valve body 1, wherein a threaded connection port 2 is respectively provided on the inner side of the water inlet end and the inner side of the water outlet end of the gate valve body 1;

[0019] Specifically, when in use, the external medium conveying pipeline is threadedly connected to the threaded connection port 2 to connect the pipeline to the gate valve body 1. After the gate valve body 1 is opened, the medium can be conveyed through the pipeline and the gate valve body 1, and after the gate valve body 1 is closed, the medium stops being conveyed.

[0020] like Figures 1 to 3 As shown, in this embodiment, an annular convex body 3 is respectively provided at the left and right ends of the inner side of the gate valve body 1, and the annular convex body 3 and the gate valve body 1 are formed as an integrated structure. The two annular convex bodies 3 are arranged one by one on the inner side of the two threaded connection ports 2, and the outer end surface of the annular convex body 3 is provided with a positioning groove 4 for providing positioning for the connecting pipe, and a first sealing ring 5 is horizontally fixedly embedded in the positioning groove 4;

[0021] The outer end surface of the gate valve body 1 is provided with a thread groove 6, a threaded barrel 7 is installed with threads in the thread groove 6, an expansion opening 9 is provided on the inner side of the joint end of the threaded barrel 7, the expansion opening 9 is expanded outwardly to facilitate squeezing the second sealing ring 8 to shrink inwardly and fit tightly on the pipeline, and a second sealing ring 8 is provided in the threaded barrel 7 to fit therewith, the second sealing ring 8 is movably embedded in the thread groove 6, and the second sealing ring 8 passes through the inner side of the thread groove 6 and then movably extends into the inner side of the positioning groove 4;

[0022] In this embodiment, the positioning groove 4 is built with a third sealing ring 10, which is staggered with the second sealing ring 8 and is used to provide sealing for the vertical plane of the pipeline, improve the sealing of the pipeline connection positioning groove 4, and further improve the sealing effect of the pipeline connection thread gate valve;

[0023] In this embodiment, the third sealing ring 10 is connected to the inner wall of the positioning groove 4 through a micro spring 11, so that the third sealing ring 10 is closely attached to the pipeline, which is beneficial to improve the sealing effect of the pipeline connection thread gate valve;

[0024] The vertical cross section of the second sealing ring 8 is a T-shaped structure, and a T-shaped opening corresponding to the second sealing ring 8 is provided on the inner side of the thread groove 6, which is helpful to prevent the second sealing ring 8 from falling off from the thread groove 6;

[0025] In this embodiment, the outer wall of the free end of the threaded barrel 7 is evenly provided with a plurality of anti-slip stripes 12 along the annular direction to prevent slipping when the threaded barrel 7 is rotated;

[0026] In this embodiment, the first sealing ring 5, the second sealing ring 8 and the third sealing ring 10 are all made of silicone, which has good elasticity and better sealing;

[0027] Specifically, an external thread corresponding to the threaded connection port 2 is provided on the pipeline, and a plane displaced from the external thread is pre-set on the pipeline, and the plane of the pipeline is used to be movably inserted into the positioning groove 4. When the pipeline is threadedly connected to the threaded connection port 2, the plane of the pipeline is inserted into the positioning groove 4. At this time, the second sealing ring 8 is attached to the inner ring of the pipeline, and the vertical plane of the third sealing ring 10 is attached to the vertical end face of the pipeline. When the pipeline continues to move in the positioning groove 4, the micro spring 11 is compressed, and the third sealing ring 10 is tightly attached to the pipeline due to the elastic force of the micro spring 11, and then the threaded cylinder 7 is rotated to drive the expansion port 9 to move. When moving, the expansion port 9 squeezes the third sealing ring 10 to shrink inward and tightly attach to the outer ring of the pipeline, thereby providing the first sealing ring 5, the second sealing ring 8 and the third sealing ring 10 for the connection between the pipeline and the threaded gate valve. Provide multiple soft sealing protection, improve the sealing effect of the pipeline connection threaded gate valve, and help reduce the leakage of the medium at the connection point between the pipeline and the threaded gate valve.

[0028] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A threaded soft-sealed gate valve, comprising a gate valve body, wherein a threaded connection port is respectively provided on the inner side of a water inlet end and an inner side of a water outlet end of the gate valve body; It is characterized in that An annular convex body is respectively arranged at the left and right ends of the inner side of the gate valve body, and the two annular convex bodies are arranged one by one on the inner sides of the two threaded connection ports, and the side surfaces of the annular convex bodies are provided with positioning grooves for providing positioning for the connecting pipes, and the first sealing ring is embedded in the positioning grooves; A thread groove is provided on the outer end face of the gate valve body, a threaded barrel is threadedly installed in the thread groove, an expansion opening is provided on the inner side of the joint end of the threaded barrel, and a second sealing ring fitting therewith is provided in the threaded barrel, the second sealing ring is movably embedded in the thread groove, and the second sealing ring passes through the inner side of the thread groove and movably extends into the inner side of the positioning groove.

2. According to claim 1, a threaded soft-sealed gate valve is characterized in that: The positioning groove is internally provided with a third sealing ring, and the third sealing ring is offset from the second sealing ring.

3. According to claim 2, a threaded soft-sealed gate valve is characterized in that: The third sealing ring is connected to the inner side wall of the positioning groove through a micro spring.

4. According to claim 1, a threaded soft-sealed gate valve is characterized in that: The vertical cross section of the second sealing ring is a T-shaped structure, and a T-shaped opening corresponding to the second sealing ring is provided on the inner side of the thread groove.

5. According to claim 1, a threaded soft-sealed gate valve is characterized in that: The outer wall of the free end of the threaded barrel is evenly provided with a plurality of anti-slip stripes along the annular direction.

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