A conversion joint and a large throttle aperture self-sealing high pressure joint valve

Abstract

The utility model relates to the technical field of coupling valves, specifically to a conversion joint and a large throttling aperture self-sealing high-pressure coupling valve, comprising: a joint body, a connecting pipe is arranged at one end of the joint body, a protrusion and a second protrusion are arranged on the surface of the connecting pipe, a sealing ring is sleeved at one end of the connecting pipe, a second connecting pipe is arranged on the side of the valve body, a third protrusion is arranged on the surface of the second connecting pipe, an elastic plate is arranged on the surface of the positioning plate, and the surface of the positioning plate is matched with a second positioning plate; the beneficial effects are as follows: the conversion joint and the large throttling aperture self-sealing high-pressure coupling valve proposed by the utility model, the annular edge groove in the sealing ring is inserted into the protrusion on the connecting pipe, the side with the sealing ring is inserted into the second connecting pipe, the annular grooves of the positioning plate and the second positioning plate are aligned with the second protrusion, the third protrusion, and the protrusion of the sealing ring and are inserted, the second positioning plate is pressed downward to fix the positioning plate and the second positioning plate as well as various structures at the connection, so as to avoid displacement of the sealing ring and improve the sealing performance.

Description

Technical Field

[0001] The utility model relates to the field of cross-flow valves, in particular to a conversion joint and a large throttle aperture self-sealing high-pressure cross-flow valve. Background Art

[0002] The high pressure heater connecting valves are all water pressure valves, which are powered by water supply. When necessary, the connecting valve is closed to cut off the water supply, and the connecting valve (also called check valve) is connected to the outlet of the small bypass pipe (two pipes). The check valve is closed under the action of the small bypass water, and the water supply flows to the boiler through the check valve, avoiding water shortage in the boiler and protecting the high pressure heater.

[0003] In the prior art, when a conventional conversion joint is connected to a connecting pipe on the side of a high-pressure joint valve, the conversion joint and the connecting pipe on the side of the high-pressure joint valve are mainly connected by threads.

[0004] However, the environment in which the high-pressure joint valve is used is generally relatively humid. After long-term use, the threads of the connecting pipe between the conversion joint and the side of the high-pressure joint valve may rust, which may easily cause the connection between the conversion joint and the high-pressure joint valve to loosen, resulting in poor sealing.

[0005] Therefore, the utility model proposes a conversion joint and a large throttle aperture self-sealing high pressure joint valve to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a conversion joint and a large throttle aperture self-sealing high pressure joint valve to solve the problems raised in the above background technology.

[0007] To achieve the above object, the utility model provides the following technical solution: a conversion joint, the conversion joint comprising: a joint body, a connecting pipe is arranged at one end of the joint body, a convex block and a second convex block are arranged on the surface of the connecting pipe, and a sealing ring is sleeved at one end of the connecting pipe;

[0008] A valve body, a second connecting pipe is arranged on the side of the valve body, and a third convex block is arranged on the surface of the second connecting pipe;

[0009] A positioning plate, an elastic plate is arranged on the surface of the positioning plate, and a second positioning plate is matched on the surface of the positioning plate.

[0010] Preferably, the protrusion and the second protrusion are in an annular plate structure, and the protrusion and the second protrusion are both fixedly connected to the surface of the connecting pipe.

[0011] Preferably, an annular edge groove is provided on the inner surface of the sealing ring, and the protrusion can be inserted into the annular edge groove.

[0012] Preferably, the elastic plate is in a barb-shaped structure, a notch is provided on the surface of the second positioning plate, the barb on the outer side of the elastic plate can be inserted into the notch, a spring is provided between the two groups of elastic plates, and the two groups of elastic plates are fixed on the positioning plate.

[0013] Preferably, the third protrusion is an annular plate structure, and the third protrusion is fixedly connected to the surface of the second connecting pipe.

[0014] Preferably, annular notches are provided in the positioning plate and the second positioning plate, and the second protrusion, the third protrusion and the protruding portion of the sealing ring can be inserted into the annular notches.

[0015] A self-sealing high-pressure joint valve with a large throttle aperture comprises the conversion joint.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The conversion joint and the large throttling aperture self-sealing high-pressure joint valve proposed by the utility model, when in use, first use the annular edge groove provided on the inner surface of the sealing ring to clamp onto the protrusion provided on the surface of the connecting pipe, the setting of the protrusion also avoids the problem of the sealing ring being offset, and then insert the side with the sealing ring sleeved into the second connecting pipe provided on the side of the valve body, and finally align the annular grooves of the positioning plate and the second positioning plate with the second protrusion and the third protrusion and the protruding part of the sealing ring to clamp them, so that the positioning plate and the second positioning plate are fixed together with the elastic plate, and the connecting pipe and the second connecting pipe are fixed together, so that the joint body can be connected to the side of the valve body more conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;

[0020] Figure 3 This is a cross-sectional view of the positioning plate of the utility model;

[0021] Figure 4 for Figure 3 The enlarged structural diagram at B in the middle;

[0022] Figure 5 This is a partial structural sectional view of the utility model;

[0023] Figure 6 This is a partial structural schematic diagram of the utility model.

[0024] In the figure: 1, joint body; 2, connecting pipe; 3, protrusion; 4, second protrusion; 5, sealing ring; 6, valve body; 7, second connecting pipe; 8, third protrusion; 9, positioning plate; 10, elastic plate; 11, annular edge groove; 12, spring; 13, second positioning plate; 14, notch; 15, annular notch. DETAILED DESCRIPTION

[0025] 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.

[0026] Embodiment 1

[0027] See also Figure 1-Figure 6 The utility model provides a technical solution: a conversion joint, the conversion joint comprising: a joint body 1, a connecting pipe 2 is arranged at one end of the joint body 1, a convex block 3 and a second convex block 4 are arranged on the surface of the connecting pipe 2, and a sealing ring 5 is sleeved at one end of the connecting pipe 2; a valve body 6, a second connecting pipe 7 is arranged on the side of the valve body 6, and a third convex block 8 is arranged on the surface of the second connecting pipe 7; a positioning plate 9, an elastic plate 10 is arranged on the surface of the positioning plate 9, and a second positioning plate 13 is matched on the surface of the positioning plate 9;

[0028] When in use, first use the annular edge groove 11 opened on the inner surface of the sealing ring 5 to snap into the protrusion 3 set on the surface of the connecting pipe 2. The sealing ring 5 has a certain elasticity. The setting of the protrusion 3 also avoids the problem of the sealing ring 5 being offset. Then insert the side with the sealing ring 5 into the second connecting pipe 7 set on the side of the valve body 6. Finally, align the annular grooves 15 of the positioning plate 9 and the second positioning plate 13 with the second protrusion 4 and the third protrusion 8 and the protrusion of the sealing ring 5, so that the positioning plate 9 and the second positioning plate 13 are fixed with the elastic plate 10, so that the connecting pipe 2 and the second connecting pipe 7 are fixedly matched, and the joint body 1 can be connected to the side of the valve body 6 more conveniently.

[0029] Embodiment 2

[0030] On the basis of the first embodiment, in order to facilitate the disassembly of the positioning plate 9 and the second positioning plate 13, an elastic plate 10 is provided, the elastic plate 10 is in a barb-shaped structure, a notch 14 is provided on the surface of the second positioning plate 13, and the barb on the outer side of the elastic plate 10 can be inserted into the notch 14, a spring 12 is provided between the two sets of elastic plates 10, and the two sets of elastic plates 10 are fixed on the positioning plate 9;

[0031] When in use, press the elastic plate 10 so that the two elastic plates 10 squeeze the spring 12. At this time, the barb of the elastic plate 10 shrinks inward and disengages from the notch 14 of the second positioning plate 13, so that the second positioning plate 13 can be taken out. When installing, align the second positioning plate 13 with the elastic plate 10 on the positioning plate 9 and press downward. At the same time, the notch 14 can effectively prevent the elastic plate 10 from shifting during use, thereby firmly fixing the positioning plate 9 and the second positioning plate 13 and various structures at the connection, and also realizing the quick assembly and disassembly function.

[0032] Embodiment 3

[0033] On the basis of the second embodiment, in order to facilitate the positioning of the sealing ring 5 to prevent deviation, a protrusion 3 is provided. The protrusion 3 and the second protrusion 4 are annular plate structures. The protrusion 3 and the second protrusion 4 are fixedly connected to the surface of the connecting pipe 2. The protrusion 3 corresponds to the annular edge groove 11 in the sealing ring 5. The positioning plate 9 and the second positioning plate 13 are provided with an annular notch 15. The second protrusion 4 and the third protrusion 8 and the protruding part of the sealing ring 5 can be inserted into the annular notch 15.

[0034] During specific use, the protrusion 3 is inserted into the annular edge groove 11 in the sealing ring 5, and the connecting pipe 2 with the sealing ring 5 is inserted into the second connecting pipe 7, and then the positioning plate 9 and the second positioning plate 13 are installed. After the installation is completed, the annular groove 15 and the protrusion 3 will squeeze the protruding part of the sealing ring 5 to prevent the sealing ring 5 from shifting in all directions, thereby realizing the positioning role played by the protrusion 3 during the installation process and preventing the sealing ring 5 from shifting during use.

[0035] In actual use, first, the annular edge groove 11 opened on the inner surface of the sealing ring 5 is used to snap into the protrusion 3 set on the surface of the connecting pipe 2. The setting of the protrusion 3 also avoids the problem of the sealing ring 5 being offset. Then, the side with the sealing ring 5 is inserted into the second connecting pipe 7 set on the side of the valve body 6, and finally, the annular groove 15 of the positioning plate 9 and the second positioning plate 13 is aligned with the second protrusion 4 and the third protrusion 8 and the protrusion of the sealing ring 5. The positioning plate 9 and the second positioning plate 13 are fixed with the elastic plate 10. The connecting pipe 2 and the second connecting pipe 7 are fixedly matched, and the joint body 1 can be connected to the side of the valve body 6 more conveniently. A quick-release structure is installed between the positioning plate 9 and the second positioning plate 13. The positioning plate 9 and the second positioning plate 13 can be removed by pressing the elastic plate 10. This avoids the problem that the environment in which the general high-pressure joint valve is used is relatively humid. After long-term use, the threads of the conversion joint and the second connecting pipe 7 on the side of the high-pressure joint valve may cause rust, which will easily cause the connection between the conversion joint and the high-pressure joint valve to become loose, thereby causing the sealing to deteriorate.

[0036] 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 conversion joint, characterized in that: The conversion joint comprises: a joint body (1), a connecting pipe (2) is arranged at one end of the joint body (1), a protrusion (3) and a second protrusion (4) are arranged on the surface of the connecting pipe (2), and a sealing ring (5) is sleeved on one end of the connecting pipe (2); A valve body (6), a second connecting pipe (7) is arranged on the side of the valve body (6), and a third protrusion (8) is arranged on the surface of the second connecting pipe (7); A positioning plate (9), a surface of which is provided with an elastic plate (10), and a surface of which is matched with a second positioning plate (13).

2. A conversion joint according to claim 1, characterized in that: The protrusion (3) and the second protrusion (4) are annular plate structures, and the protrusion (3) and the second protrusion (4) are both fixedly connected to the surface of the connecting pipe (2).

3. A conversion joint according to claim 1, characterized in that: The inner surface of the sealing ring (5) is provided with an annular edge groove (11), and the protrusion (3) can be inserted into the annular edge groove (11).

4. A conversion joint according to claim 1, characterized in that: The elastic plate (10) is in the form of a barb-shaped structure. A notch (14) is provided on the surface of the second positioning plate (13). The barb on the outer side of the elastic plate (10) can be inserted into the notch (14). A spring (12) is provided between the two groups of elastic plates (10). Both groups of elastic plates (10) are fixed on the positioning plate (9).

5. A conversion joint according to claim 1, characterized in that: The third protrusion (8) is an annular plate-shaped structure, and the third protrusion (8) is fixedly connected to the surface of the second connecting pipe (7).

6. A conversion joint according to claim 1, characterized in that: The positioning plate (9) and the second positioning plate (13) are provided with an annular notch (15), and the second convex block (4), the third convex block (8) and the protruding portion of the sealing ring (5) can all be inserted into the annular notch (15).

7. A large throttle aperture self-sealing high pressure joint valve, characterized in that: The invention comprises a conversion joint as described in any one of claims 1 to 6.

Images