Mechanical pneumatic reversing valve

Abstract

The utility model relates to the technical field of pneumatic reversing valves, in particular to a mechanical pneumatic reversing valve which comprises a pneumatic reversing valve body, one end of the pneumatic reversing valve body is fixedly connected with a connecting pipe, and the outer side of the connecting pipe is fixedly connected with a limiting plate located on the edge. Through arrangement of components such as a connecting pipe, a limiting plate, a first rubber pad, a connecting shell, a water pipe, a connecting groove, a spring and a second rubber pad, the first rubber pad sleeves the outer side of the connecting pipe to be attached to the limiting plate, then the connecting pipe is aligned to the connecting shell, and then the connecting shell is rotated to enable the connecting pipe to spirally enter the inner side of the connecting shell to be connected with the connecting shell; the water pipe can spirally enter the inner side of the connecting pipe along with rotation of the connecting shell, the connecting pipe is connected with the water pipe, after the connecting shell and the connecting pipe are completely tightened, the connecting pipe can be attached to the second rubber pad, the connecting shell can be attached to the first rubber pad, a double-leakage-proof structure is formed, and connection can be tighter through the arranged double-connecting structure.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic directional valves, and particularly relates to a mechanical pneumatic directional valve. Background Technique

[0002] A directional valve is a control valve with various flow forms and multiple channels, and is a valve for realizing the communication, cutting off and reversing of liquids. Among them, the pneumatic directional valve is more used. The pneumatic directional valve combines a cylinder and a valve core to realize the rapid adjustment of the directional valve.

[0003] The connection between the pneumatic directional valve and the liquid pipeline is usually connected by a joint and a single-layer gasket to prevent liquid leakage. Over time, as the gasket ages, the single-layer anti-leakage effect is not ideal, and there is a risk of liquid leakage; with the change of temperature, the pipeline will expand and contract thermally. Over time, the connection will become loose. The existing pneumatic directional valve cannot give an alarm in time when the pipeline is loose, and there is a risk of liquid leakage. Therefore, a mechanical pneumatic directional valve is proposed for the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a mechanical pneumatic directional valve to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A mechanical pneumatic directional valve, including a pneumatic directional valve, one end of the pneumatic directional valve is fixedly connected with a connecting pipe, a limiting plate is fixedly connected to the outside of the connecting pipe at the edge, a first rubber pad is slidably connected to the outside of the connecting pipe on one side of the limiting plate, a connecting shell is spirally connected to the outside of the connecting pipe, a water pipe is spirally connected to the inside of the connecting pipe, a connecting groove is opened between the connecting shell and the water pipe, a spring is fixedly connected to the inside of the connecting groove, the end of the spring away from the connecting shell is fixedly connected with a second rubber pad, a button switch is fixedly connected to the inside of the connecting groove on the outside of the spring, and an alarm lamp is fixedly connected to the top of the pneumatic directional valve.

[0007] Preferably, a water pipe is fixedly connected to the inside of the connecting shell, one end of the connecting shell is mutually attached to the first rubber pad, and the end of the connecting pipe away from the pneumatic directional valve is mutually attached to the second rubber pad.

[0008] Preferably, the number of the springs is six, and they are evenly arranged inside the connecting groove with the water pipe as the axis.

[0009] Preferably, the number of the button switches is two, and they are symmetrically arranged inside the connecting groove.

[0010] Preferably, the diameter of the first rubber pad is the same as that of the connection shell, and the diameter of the second rubber pad is the same as that of the water pipe.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. In the present utility model, through components such as the connecting pipe, limiting plate, first rubber pad, connection shell, water pipe, connection groove, spring, and second rubber pad, first, the first rubber pad is sleeved on the outer side of the connecting pipe and fits with the limiting plate. Then, the connecting pipe is aligned with the connection shell, and then the connection shell is rotated so that the connecting pipe spirally enters the inner side of the connection shell and is connected thereto. As the connection shell rotates, the water pipe will spirally enter the inner side of the connecting pipe, and a connection is established between the connecting pipe and the water pipe. When the connection shell and the connecting pipe are completely tightened, the connecting pipe will fit with the second rubber pad, and the connection shell will fit with the first rubber pad, forming a double leak-proof structure. By setting the double connection structure, the connection can be made more tight. Even if the second rubber pad wears out, the first rubber pad can still maintain its function, greatly extending the service life. Thus, it solves the problem that the connection between the pneumatic reversing valve and the liquid pipeline usually uses a joint plus a single-layer gasket for connection to prevent liquid leakage. Over time, as the gasket ages, the single-layer leak-proof effect is not ideal, and there is a risk of liquid leakage.

[0013] 2. In the present utility model, through components such as the second rubber pad, spring, connection groove, button switch, and alarm lamp, as the connection shell and the water pipe are connected to the connecting pipe, the connecting pipe will squeeze and push the second rubber pad in the connection groove. The second rubber pad compresses the spring, and the second rubber pad squeezes the button switch, closing the circuit of the button switch. Under the action of the spring, the second rubber pad will fit towards the connecting pipe. When the connection between the connecting pipe and the connection shell and the water pipe becomes loose, the spring will push open the second rubber pad, stopping the second rubber pad from squeezing the button switch. At this time, the circuit of the button switch will be turned on, and the alarm lamp is turned on through the button switch to give an alarm, prompting the staff that the pipeline is loose. Thus, it solves the problem that as the temperature changes, the pipeline will expand and contract thermally, and over time, the connection will become loose. The existing pneumatic reversing valve cannot give an alarm in time when the pipeline is loose, and there is a risk of liquid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the detailed structure of the present utility model;

[0016] Figure 3 is a left view structure diagram of the connection shell of the present utility model;

[0017] Figure 4 is a left view sectional structure diagram of the connection shell of the present utility model;

[0018] Figure 5 This is the schematic right - view sectional structure diagram of the connecting pipe of the present utility model;

[0019] Figure 6 This is the schematic side - view sectional structure diagram of the present utility model.

[0020] In the figure: 1. Pneumatic reversing valve; 2. Connecting pipe; 3. Limiting plate; 4. First rubber pad; 5. Connecting shell; 6. Water pipe; 7. Connecting groove; 8. Spring; 9. Second rubber pad; 10. Button switch; 11. Alarm lamp. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than 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 efforts belong to the protection scope of the present utility model.

[0022] It should be noted that the terms used here are only for describing specific embodiments, rather than intending to limit the exemplary embodiments according to the present application. As used here, unless the context clearly indicates otherwise, the singular form also intends to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0023] In addition, it should be noted that using words such as "first" and "second" to limit components is only for facilitating the distinction of corresponding components. Without additional statements, the above words have no special meanings, so they cannot be understood as limiting the protection scope of the present invention.

[0024] Please refer to Figures 1-6 , the present utility model provides a technical solution:

[0025] A mechanical pneumatic reversing valve, including a pneumatic reversing valve 1. One end of the pneumatic reversing valve 1 is fixedly connected to a connecting pipe 2. The outside of the connecting pipe 2 is fixedly connected with a limiting plate 3 located at the edge. The outside of the connecting pipe 2 is slidably connected with a first rubber pad 4 located on one side of the limiting plate 3. The outside of the connecting pipe 2 is spirally connected with a connecting shell 5. The inside of the connecting pipe 2 is spirally connected with a water pipe 6. A connecting groove 7 is opened between the connecting shell 5 and the water pipe 6. A spring 8 is fixedly connected inside the connecting groove 7. One end of the spring 8 away from the connecting shell 5 is fixedly connected with a second rubber pad 9. A button switch 10 is fixedly connected inside the connecting groove 7 on the outside of the spring 8. The top of the pneumatic reversing valve 1 is fixedly connected with an alarm lamp 11.

[0026] Inside the connecting shell 5, a water pipe 6 is fixedly connected. One end of the connecting shell 5 is in mutual contact with the first rubber pad 4. One end of the connecting pipe 2 away from the pneumatic reversing valve 1 is in mutual contact with the second rubber pad 9. The number of springs 8 is six, and they are evenly arranged inside the connecting groove 7 with the water pipe 6 as the axis. The number of push-button switches 10 is two, and they are symmetrically arranged inside the connecting groove 7. The diameter of the first rubber pad 4 is the same as that of the connecting shell 5, and the diameters of the second rubber pad 9 and the water pipe 6 are the same.

[0027] Working process: When the mechanical pneumatic reversing valve needs to be used, first, the first rubber pad 4 is sleeved on the outside of the connecting pipe 2 and is in contact with the limiting plate 3. Then, the connecting pipe 2 is aligned with the connecting shell 5, and then the connecting shell 5 is rotated so that the connecting pipe 2 spirally enters the inside of the connecting shell 5 and is connected to it. As the connecting shell 5 rotates, the water pipe 6 will spirally enter the inside of the connecting pipe 2, and a connection is established between the connecting pipe 2 and the water pipe 6. When the connecting shell 5 and the connecting pipe 2 are completely tightened, the connecting pipe 2 will be in contact with the second rubber pad 9, and the connecting shell 5 will be in contact with the first rubber pad 4, forming a double leak-proof structure. The double connection structure can make the connection more tight. Even if the second rubber pad 9 wears out, the first rubber pad 4 can still maintain its function, greatly extending the service life. As the connecting shell 5 and the water pipe 6 are connected to the connecting pipe 2, the connecting pipe 2 will squeeze and push the second rubber pad 9 inside the connecting groove 7. By compressing the spring 8 through the second rubber pad 9 and squeezing the push-button switch 10 through the second rubber pad 9, the circuit of the push-button switch 10 is closed. Under the action of the spring 8, the second rubber pad 9 will fit towards the connecting pipe 2. When the connection between the connecting pipe 2 and the connecting shell 5 and the water pipe 6 becomes loose, the spring 8 will push open the second rubber pad 9 and stop squeezing the push-button switch 10 by the second rubber pad 9. At this time, the circuit of the push-button switch 10 will be turned on, and the alarm lamp 11 is turned on through the push-button switch 10 to give an alarm, prompting the staff that the pipeline is loose, facilitating timely maintenance to prevent liquid leakage.

[0028] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt the conventional means such as bolts, rivets, and welding in the prior art. The machines, parts, and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.

[0029] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A mechanical pneumatic reversing valve, comprising a pneumatic reversing valve (1), characterized in that: One end of the pneumatic reversing valve (1) is fixedly connected with a connecting pipe (2). A limiting plate (3) located at the edge is fixedly connected to the outer side of the connecting pipe (2). A first rubber pad (4) located on one side of the limiting plate (3) is slidably connected to the outer side of the connecting pipe (2). A connecting shell (5) is screwed to the outer side of the connecting pipe (2). A water pipe (6) is screwed to the inner side of the connecting pipe (2). A connecting groove (7) is formed between the connecting shell (5) and the water pipe (6). A spring (8) is fixedly connected to the inside of the connecting groove (7). One end of the spring (8) away from the connecting shell (5) is fixedly connected with a second rubber pad (9). A button switch (10) located outside the spring (8) is fixedly connected to the inside of the connecting groove (7). An alarm lamp (11) is fixedly connected to the top of the pneumatic reversing valve (1).

2. The mechanical pneumatic reversing valve according to claim 1, characterized in that: A water pipe (6) is fixedly connected to the inside of the connecting shell (5). One end of the connecting shell (5) is in mutual contact with the first rubber pad (4). One end of the connecting pipe (2) away from the pneumatic reversing valve (1) is in mutual contact with the second rubber pad (9).

3. A mechanical pneumatic reversing valve according to claim 2, characterized in that: The number of the springs (8) is six, and they are evenly arranged inside the connecting groove (7) with the water pipe (6) as the axis.

4. A mechanical pneumatic reversing valve according to claim 1, characterized in that: The number of the button switches (10) is two, and they are symmetrically arranged inside the connecting groove (7).

5. A mechanical pneumatic reversing valve according to claim 1, characterized in that: The diameter of the first rubber pad (4) is the same as that of the connecting shell (5). The diameter of the second rubber pad (9) is the same as that of the water pipe (6).

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