Vacuum diverter valve

Abstract

The utility model relates to the technical field of valve equipment, and discloses a vacuum diverter valve, which comprises a connecting part, a sealing part is rotatably arranged on the connecting part, an inlet and an outlet which are not communicated with each other are arranged on the connecting part, a diverter hole communicated with the inlet and the outlet is arranged on the sealing part, and the diverter hole is communicated with the inlet and the outlet. The two flow guide holes are communicated with each other; when the valve is opened, the flow guide hole corresponds to the inlet and the outlet in position. When the valve is closed, the flow guide hole is staggered from the inlet and the outlet; the device can resist erosion of a high-temperature environment, guarantees stability in the working process, and is simple in structure, easy and convenient to operate and use, easy to maintain and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of valve equipment, in particular to a vacuum diversion valve. Background Art

[0002] With the rapid development of science and technology in our country, the new vertical tank process for magnesium production has gradually emerged with the advantages of reduced personnel input and increased production capacity. The new vertical tank process has the advantages of large tank size and high output, and is very popular among newly built factories; however, in actual production, there are both advantages and disadvantages. For example, large tanks are prone to air leakage during the reduction process. At this time, a vacuum valve that can be closed in time is needed to cut off the leaking tank. If the vacuum valve cannot be closed or is not closed tightly, it will affect the production of other tanks. The only way to handle it is to seal it with a blind plate. And closing the tank needs to be carried out after turning off the vacuum pump, and the success rate of closing the tank with a blind plate only accounts for 50%. Depressurizing during tank closing affects the vacuum, and large vacuum fluctuations will also cause the situation of dead tanks and empty tanks in the group, resulting in great economic losses.

[0003] Due to the poor working environment at the furnace top with a temperature above 200 °C, various currently used ball valve gaskets are not durable. Using a hard-sealed gate valve with a higher price is prone to being wetted by dust around the valve and water for tank replacement, resulting in the situation where the valve core cannot be closed. At the same time, the opening and closing operations of various existing valves require the cooperation of multiple structures to achieve, the structure is relatively complex, the components are prone to damage, and the maintenance is relatively troublesome; therefore, there is an urgent need for a vacuum diversion valve that can be used in a high-temperature working environment and has a simple structure and is easy to open and close. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a vacuum diversion valve that can resist the erosion of high-temperature environments, ensure stability during the working process, and at the same time has a simple structure, is easy to operate and use, is easy to maintain, and has strong practicability.

[0005] The utility model adopts the following technical solutions:

[0006] A vacuum diversion valve includes a connecting part, a sealing part is rotatably arranged on the connecting part, the connecting part is provided with a non-connecting inlet and outlet, the sealing part is provided with diversion holes communicating with the inlet and the outlet, and two of the diversion holes communicate with each other; when the valve is opened, the diversion holes correspond to the positions of the inlet and the outlet; when the valve is closed, the diversion holes are staggered from the positions of the inlet and the outlet.

[0007] Preferably, a partition is arranged inside the connecting part, and the inlet and the outlet are located on both sides of the partition.

[0008] Preferably, a diversion cavity is formed inside the sealing part, and both of the two diversion holes communicate with the diversion cavity.

[0009] Preferably, the sealing portion is detachably connected to the connecting portion.

[0010] Preferably, the external thread of the connecting portion is provided with a connecting sleeve, and the sealing portion is crimped onto the end surface of the connecting portion through the connecting sleeve.

[0011] Preferably, a gasket is provided between the connecting sleeve and the sealing portion.

[0012] Preferably, the end surface of the connecting portion opposite to the sealing portion is smooth.

[0013] Preferably, a positioning structure is provided on the end surface of the connecting portion opposite to the sealing portion, and the positioning structure is provided at the axial center position of the sealing portion and the connecting portion.

[0014] Preferably, the positioning structure includes a positioning boss and a positioning groove matching the positioning boss.

[0015] Preferably, scale lines are provided on the outside of the connecting sleeve, and indicator lines are provided on the sealing portion.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the utility model realizes smooth opening and closing of the diversion valve by rotating the connecting part and the sealing part so that the diversion hole and the inlet and outlet on the connecting part coincide or stagger by rotating the sealing part, and the operation is simple and quick, and the structure is simple, not easy to be damaged, and the stability is high; in addition, the sealing operation is realized directly through the surface contact between the sealing part and the connecting part, the structure is simple, the high temperature tolerance is strong, the opening and closing are not affected by the temperature, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of an embodiment of the present application;

[0018] Figure 2 A cross-sectional view of an embodiment of the present application;

[0019] Figure 3 for Figure 2 A is an enlarged view of the middle image. DETAILED DESCRIPTION

[0020] The following is a clear and complete description of the present invention in conjunction with the accompanying drawings and embodiments:

[0021] like Figures 1 to 3As shown in the figure, a vacuum diversion valve of the present utility model includes a connection part 1, on which a sealing part 2 is rotatably arranged, and the opening and closing operations of the entire diversion valve are completed by the rotation of the sealing part 2; preferably, both the connection part 1 and the sealing part 2 are made of high-temperature resistant metal materials to ensure their stability under high-temperature conditions; an inlet 3 and an outlet 4 are arranged on the end surface of the connection part 1, the inlet 3 is connected to the input pipeline, the outlet 4 is connected to the output pipeline, the inlet 3 and the outlet 4 are not in communication with each other, and two mutually communicating diversion holes 5 are arranged on the end surface of the sealing part 2, and the diversion holes 5 correspond to the positions of the inlet 3 and the outlet 4 on the connection part 1; in the use state, when the valve is opened, the two diversion holes 5 respectively correspond to the corresponding inlet 3 and outlet 4; when the valve is closed, the sealing part 2 is rotated to stagger the positions of the diversion holes 5 from the inlet 3 and the outlet 4, and at the same time, according to the actual working conditions, the flow rate can be adjusted by adjusting the coincidence degree of the two diversion holes 5 with the corresponding inlet 3 and outlet 4.

[0022] Furthermore, in this embodiment, a partition is arranged at the middle position inside the connection part 1, and the inlet 3 and the outlet 4 are located on both sides of the partition to realize non-communication between the inlet 3 and the outlet 4. In addition, a diversion cavity 6 is formed inside the sealing part 2, and both of the two diversion holes 5 are in communication with the diversion cavity 6. During operation, the medium is introduced through the inlet 3 on the connection part 1, smoothly enters the diversion cavity 6 through the corresponding diversion hole 5, then is output through the diversion hole 5 corresponding to the outlet 4, enters the connection part 1, and finally is led out through the outlet 4 on the connection part 1.

[0023] Furthermore, in this embodiment, the sealing part 2 and the connection part 1 are detachably connected to facilitate their overhaul and maintenance. Specifically, an outer thread is provided with a connection sleeve 7 on the connection part 1, the connection sleeve 7 is a structure that penetrates up and down, and a pressing edge extends from one end of the connection sleeve 7 away from the connection part 1 towards the middle thereof, and a convex platform protrudes from one end of the sealing part 2 in contact with the connection part 1, specifically as Figure 3 shown, after one end of the sealing part 2 away from the connection part 1 passes through the connection sleeve 7, the convex platform at the other end contacts the inner wall of the pressing edge of the connection sleeve 7, and through the threaded connection between the connection sleeve 7 and the connection part 1, the sealing part 2 can be pressed on the end surface of the connection part 1. In addition, a gasket 8 is arranged between the connection sleeve 7 and the sealing part 2, and the gasket 8 can adopt an elastic structure, which is convenient to adjust the tightness of the combination of the sealing part 2 and the connection part 1 by rotating the connection sleeve 7 according to the actual situation, so as to perform rotational adjustment on the sealing part 2.

[0024] Further, in this embodiment, the end face of the connecting portion 1 opposite to the sealing portion 2 is smooth to enhance the tightness of their combination. In addition, a positioning structure is provided on the end face of the connecting portion 1 opposite to the sealing portion 2, and the positioning structure is provided at the axial center positions of the sealing portion 2 and the connecting portion 1. The setting of the positioning structure facilitates the quick alignment and installation between the sealing portion 2 and the connecting portion 1 after disassembly, improving the convenience of operation. Specifically, the positioning structure includes a positioning boss 9 and a positioning groove 10 that matches the positioning boss 9. The positioning boss 9 and the positioning groove 10 are respectively arranged on the sealing portion 2 and the connecting portion 1. The positioning boss 9 is a smooth cylindrical structure, and the positioning groove 10 matches its structure to ensure the rotational connection after the sealing portion 2 and the connecting portion 1 are connected.

[0025] Further, scale lines are provided on the outer side of the connecting sleeve 7, and an indicating line is provided on the sealing portion 2. So as to visually observe whether the flow guiding valve is in the open or closed state through the indication of the indicating line, enhancing the practicability of the present utility model. In addition, in this embodiment, an adjusting groove 11 is preferably provided at one end of the sealing portion 2 away from the connecting portion 1 to facilitate the insertion of an adjusting tool to perform an adjusting operation on the sealing portion 2. The shape of the adjusting groove 11 can be of various structures, such as a hexagon that can be used in combination with an internal hexagonal wrench, and the specific structure can be flexibly set according to actual needs.

[0026] In the present utility model, by rotating the sealing portion 2, the opening and closing of the flow guiding valve can be realized. The operation is simple, the structure is simple, it is not easy to be damaged, and the stability is high. In addition, the sealing operation is directly achieved through the surface-to-surface contact between the sealing portion 2 and the connecting portion 1. The structure is simple, there is no use of an over-sealing gasket, and the heat tolerance of the flow guiding valve can be enhanced by reasonable material selection, so that the opening and closing of the flow guiding valve are not affected by temperature, and the practicability is strong.

Claims

1. A vacuum diversion valve, characterized in that: It comprises a connecting part, on which a sealing part is rotatably arranged, on which an inlet and an outlet which are not connected to each other are arranged, on which a flow guide hole which is connected to the inlet and the outlet is arranged, wherein two of the flow guide holes are connected to each other; when the valve is opened, the flow guide hole corresponds to the position of the inlet and the outlet; when the valve is closed, the flow guide hole is staggered from the position of the inlet and the outlet.

2. The vacuum diversion valve according to claim 1, characterized in that: A partition is arranged inside the connecting portion, and the inlet and the outlet are located on both sides of the partition.

3. The vacuum diversion valve according to claim 1, characterized in that: A flow guiding cavity is formed in the sealing portion, and the two flow guiding holes are both communicated with the flow guiding cavity.

4. The vacuum diversion valve according to claim 1, characterized in that: The sealing portion is detachably connected to the connecting portion.

5. The vacuum diversion valve according to claim 4, characterized in that: The external thread of the connection part is provided with a connection sleeve, and the sealing part is crimped onto the end surface of the connection part through the connection sleeve.

6. The vacuum diversion valve according to claim 5, characterized in that: A gasket is arranged between the connecting sleeve and the sealing portion.

7. The vacuum diversion valve according to claim 5, characterized in that: The end surface of the connecting portion opposite to the sealing portion is smoothly arranged.

8. The vacuum diversion valve according to claim 5, characterized in that: A positioning structure is arranged on the end surface of the connecting portion opposite to the sealing portion, and the positioning structure is arranged at the axial center position of the sealing portion and the connecting portion.

9. The vacuum diversion valve according to claim 8, characterized in that: The positioning structure includes a positioning boss and a positioning groove matching the positioning boss.

10. The vacuum diversion valve according to claim 5, characterized in that: The outer side of the connecting sleeve is provided with scale lines, and the sealing part is provided with indicator lines.

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