Valve body

Abstract

The valve body comprises a middle valve body, and a first cavity and a second cavity which are sequentially communicated are arranged in the middle valve body; the first valve body is assembled at the left end of the middle valve body; the second valve body is arranged at the right end of the middle valve body, and at least part of the second valve body is arranged in the second cavity. The valve element is arranged in the first cavity and can transversely move in the first cavity, and a plurality of adjusting holes communicated with an inner cavity of the valve element are formed in the outer wall of the valve element. And the second valve body channel, the second cavity, the adjusting hole, the valve element inner cavity, the first cavity and the first valve body channel form a gas circulation channel formed by the second valve body channel, the second cavity, the adjusting hole, the valve element inner cavity, the first cavity and the first valve body channel. When the high-pressure gas set value at the high-pressure valve body is changed, the low-pressure gas value at the low-pressure valve body is always kept at the set value, and equipment connected with the high-pressure valve body or the low-pressure valve body can be reversely checked according to whether the gas pressure values at the high-pressure valve body and the low-pressure valve body are kept at the set value or not.

Description

Technical Field

[0001] The utility model relates to the field of valve bodies, in particular to a valve body. Background Art

[0002] The valve body is a major component in the valve, among which the high-low pressure conversion valve body is a special valve body, which mainly acts on the conversion between high pressure and low pressure.

[0003] For example, China's public document 202010665499.3 once disclosed a pressure-adjustable high-low pressure conversion valve body, which realizes the mutual conversion of high pressure and low pressure through the reciprocating motion of the valve body. Specifically, the pressure conversion is controlled by the displacement movement of the plunger valve core in the conversion valve body.

[0004] However, during use of the above-mentioned valve body, the high-pressure port needs to be connected to a high-pressure container, and the low-pressure port needs to be connected to a low-pressure container. However, when the pressures on both sides are not equal, it is impossible to quickly determine whether the high-pressure port or the low-pressure port needs to be troubleshooted.

[0005] To this end, further improvements are requested. Utility Model Content

[0006] The utility model aims at the deficiencies in the prior art and provides a valve body. The utility model solves the problem that when the set value at the high-pressure valve body changes during the process of high-pressure gas conversion to low-pressure gas, the low-pressure gas value at the low-pressure valve body always remains at the set value, and the fault can be reversely diagnosed based on whether the high-pressure port or the low-pressure port remains at the set value.

[0007] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0008] A valve body comprising

[0009] An intermediate valve body, wherein the intermediate valve body includes a first cavity and a second cavity that are connected in sequence;

[0010] a first valve body, which is assembled at the left end of the middle valve body and is used to output low-pressure gas;

[0011] a second valve body, which is disposed at the right end of the middle valve body and at least partially disposed in the second cavity, and is used to output high-pressure gas; and

[0012] a valve core, the valve core being arranged in the first cavity and being capable of laterally moving in the first cavity, the outer wall of the valve core being provided with a plurality of adjustment holes communicating with the inner cavity thereof, so as to form a gas flow channel consisting of the second valve body passage, the second cavity, the adjustment holes, the inner cavity of the valve core, the first cavity, and the first valve body passage;

[0013] When the component connected to the first valve body reaches a set pressure and the component connected to the second valve body does not reach a set pressure, the valve core moves until the adjustment hole completely overlaps the inner wall of the first cavity to disconnect the gas flow channel.

[0014] In the above technical solution, preferably, the diameter of the first valve body is smaller than the diameter of the second valve body, and one side of the second valve body is connected to the intermediate valve body.

[0015] In the above technical solution, preferably, the valve core and the first valve body are both installed inside the intermediate valve body.

[0016] In the above technical solution, preferably, the second valve body is provided with a second thread connected to the intermediate valve body, and the second thread is placed on the right side of the second valve body.

[0017] In the above technical solution, preferably, the first valve body is provided with a first thread connected to the intermediate valve body, and the first thread is placed on the right side of the first valve body.

[0018] In the above technical solution, preferably, the pitch of the first thread is greater than the pitch of the second thread.

[0019] In the above technical solution, preferably, the first valve body is connected to a first valve port, and the first valve port is provided with a third thread connected to the first valve body.

[0020] In the above technical solution, preferably, the second valve body is connected to a second valve port, and the second valve port is provided with a fourth thread connected to the second valve body.

[0021] In the above technical solution, preferably, the third thread includes an adjusting thread;

[0022] The adjusting thread is used to adjust the set value of low-pressure gas or high-pressure gas.

[0023] The beneficial effects of the present invention are as follows: when the high-pressure gas setting value at the high-pressure valve body changes, the low-pressure gas value at the low-pressure valve body always remains at the set value, and the equipment connected to the high-pressure valve body or the low-pressure valve body can be reversely checked based on whether the air pressure values ​​at the high-pressure valve body and the low-pressure valve body remain at the set value. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a cross-sectional view of the utility model.

[0025] Figure 2 It is a schematic diagram of the utility model.

[0026] Figure 3 This is a schematic diagram of the valve core of the utility model.

[0027] Figure 4 This is a schematic diagram of the connection of the first valve body of the utility model.

[0028] Figure 5 This is a schematic diagram of the connection of the second valve body of the utility model.

[0029] Figure 6 This is a schematic diagram of the intermediate valve body of the utility model.

[0030] Figure 7 This is a schematic diagram of the first valve port of the utility model.

[0031] 1. Valve core, 11. First valve body, 12. Second valve body, 13. Intermediate valve body, 14. First valve port, 15. Second valve port, 16. Adjustment hole, 2. Spring, 3. Adjustment thread. DETAILED DESCRIPTION

[0032] The present invention is described in further detail below with reference to the accompanying drawings and specific embodiments:

[0033] like Figure 1-Figure 7 As shown, a valve body includes a valve core 1, a spring 2, a first valve body 11, a second valve body 12, and an intermediate valve body 13. The first valve body 11 is used to convey low-pressure gas, and the second valve body 12 is used to convey high-pressure gas. The first valve body 11 is placed on the left side of the intermediate valve body 13, and the second valve body 12 is placed on the right side of the intermediate valve body 13. The spring 2 is installed inside the valve core 1, and one end of the spring 2 is connected to the inner wall of the valve core 1.

[0034] In this embodiment, at least one side of the second valve body 12 is in contact with the intermediate valve body 13. Therefore, the diameter of the second valve body 12 is larger than the diameter of the first valve body 11. Therefore, the valve core 1 and the first valve body 11 are both placed inside the intermediate valve body 13, and the other end of the spring 2 in the valve core 1 is connected to the first valve body 11.

[0035] Furthermore, the inner wall of the intermediate valve body 13 is used for the valve core 1 to make a reciprocating motion, and a cavity for gas circulation is provided inside the connection portion between the second valve body 12 and the intermediate valve body 13 .

[0036] Furthermore, the right side of the first valve body 11 and the right side of the second valve body 12 are respectively provided with a first thread and a second thread for connecting to the intermediate valve body 13, and the thread pitch of the first thread provided on the first valve body 11 is greater than the thread pitch of the second thread provided on the second valve body 12.

[0037] In addition, the left side of the first thread and the left side of the second thread are both provided with the same sealing ring for sealing reinforcement.

[0038] In addition, the first valve body 11 is disassembled and connected to the first valve port 14, and the second valve body 12 is disassembled and connected to the second valve port 15. The first valve port 14 is provided with a third thread for disassembling and connecting to the first valve body 11, and the second valve port 15 is provided with a fourth thread for disassembling and connecting to the second valve body 12, wherein the third thread is an adjusting thread 3 for adjusting the high-pressure gas setting value and the low-pressure gas setting value.

[0039] Furthermore, the valve core 1 is further provided with a plurality of adjustment holes 16 communicating with the inner cavity. In this embodiment, four adjustment holes 16 are provided and are evenly arranged.

[0040] The first valve body 11 and the second valve body 12 are detachably connected to the intermediate valve body 13 through the first and second threads provided on the main bodies thereof. Subsequently, the first valve body 11 and the second valve body 12 are detachably connected to the first valve port 14 and the second valve port 15 to form the valve body main body.

[0041] In this embodiment, during use, the first valve port 14 of the first valve body 11 and the second valve port 15 of the second valve body 12 of the utility model are connected to their respective containers, the first valve port 14 is connected to a low-pressure container, the second valve port 15 is connected to a high-pressure container, and the utility model is also connected to a pressure gauge to assist in adjusting the air pressure value.

[0042] By turning the adjusting screw 3 at the first valve port 14, the pressure gauge will display the currently adapted low pressure value and high pressure value. After the set value is adjusted to be always stable by adjusting the screw 3, the use of the utility model is as follows:

[0043] When the high-pressure gas in the second valve body 12 reaches the set value, the valve core 1 in the intermediate valve body 13 is subjected to the force exerted by the high-pressure gas. At this time, the spring 2 contracts and moves along the first valve body 11, and the valve core 1 moves accordingly. The high-pressure gas flows into the cavity and is reduced in pressure through the regulating hole 16 and flows into the first valve body 11, so that the gas in the first valve body 11 is maintained at the set low pressure value.

[0044] On the contrary, the high-pressure gas in the second valve body 12 has not reached the set value, the valve core 1 will not move with the contraction of the spring 2, and the first valve body 11 will always be closed. If at this time, the pressure gauge connected to the second valve body 12 has reached the set value, and the first valve body 11 is closed, it can be inferred that there is a leak in the second valve body 12 or a fault needs to be checked.

[0045] When the high-pressure gas in the second valve body 12 reaches the set value, but the low-pressure gas in the first valve body 11 has not reached the set value, the high-pressure container connected to the second valve body 12 will continue to take in air, causing the first valve body 11 to reach the set value. From this, it can be inferred that there is a leak or fault at the first valve body 11.

[0046] Furthermore, when the present invention is suddenly closed or the high-pressure gas applied by the second valve body 12 suddenly drops, the valve core 1 inside the intermediate valve body 13 of the present invention will be reset along with the reset of the spring 2, so that the low-pressure gas that has been discharged into the first valve body 11 will not flow back, and the low-pressure gas in the first valve body 11 will still be maintained at the set value.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A valve body, characterized in that: include An intermediate valve body (13), wherein the intermediate valve body (13) includes a first cavity and a second cavity that are connected in sequence; a first valve body (11), the first valve body (11) being assembled at the left end of the intermediate valve body (13) and being used for outputting low-pressure gas; a second valve body (12), the second valve body (12) being arranged at the right end of the middle valve body (13), and at least partially arranged in the second cavity, for outputting high-pressure gas; and A valve core (1), the valve core (1) being arranged in the first cavity and being capable of transversely moving in the first cavity, a plurality of regulating holes (16) being provided on the outer wall of the valve core (1) and communicating with the inner cavity thereof, so as to form a gas flow passage consisting of the passage of the second valve body (12), the second cavity, the regulating holes (16), the inner cavity of the valve core, the first cavity, and the passage of the first valve body (11); When the pressure of the component connected to the first valve body (11) reaches a set value and the pressure of the component connected to the second valve body (12) does not reach the set value, the valve core (1) moves until the regulating hole (16) completely overlaps with the inner wall of the first cavity, thereby disconnecting the gas flow channel.

2. A valve body according to claim 1, characterized in that: The diameter of the first valve body (11) is smaller than the diameter of the second valve body (12), and one side of the second valve body (12) is connected to the intermediate valve body (13).

3. A valve body according to claim 2, characterized in that: The valve core (1) and the first valve body (11) are both installed inside the intermediate valve body (13).

4. A valve body according to claim 1, characterized in that: The second valve body (12) is provided with a second thread connected to the middle valve body (13), and the second thread is located on the right side of the second valve body (12).

5. A valve body according to claim 4, characterized in that: The first valve body (11) is provided with a first thread connected to the middle valve body (13), and the first thread is located on the right side of the first valve body (11).

6. A valve body according to claim 5, characterized in that: The pitch of the first thread is greater than the pitch of the second thread.

7. The valve body according to claim 1, characterized in that: The first valve body (11) is connected to a first valve port (14), and the first valve port (14) is provided with a third thread connected to the first valve body.

8. The valve body according to claim 1, characterized in that: The second valve body (12) is connected to a second valve port (15), and the second valve port is provided with a fourth thread connected to the second valve body.

9. The valve body according to claim 7, characterized in that: The third thread comprises an adjustment thread.

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