Chemical environment-friendly air pressure isolating valve

Abstract

The utility model relates to the technical field of chemical valves. The chemical environment-friendly air pressure isolating valve comprises a main body structure, the main body structure comprises a valve seat, two groups of first valve balls and two groups of second valve balls; the filter structure comprises a filter seat, a first limiting block, a filter element and a second limiting block, one end of the filter seat is communicated with the other end of the valve seat, and pressure gauges are mounted in the upper surfaces of the two ends of the valve seat. Air pressure in the two ends of the valve seat can be detected through the two sets of pressure gauges respectively, when the air pressure in one end of the valve seat is too high, the first valve ball at the corresponding end can be opened, then the second valve ball is opened, and the pressure can be released at the moment; by means of the design, the situation that pressure in the valve seat and pressure in connecting pipelines at the two ends are too high can be avoided as much as possible, and therefore the safety of equipment in the using process can be improved to a certain degree.

Description

A chemical environmental protection pneumatic isolation valve Technical Field

[0001] This utility model relates to the field of chemical valve technology; more specifically, it relates to a chemical environmental protection pneumatic isolation valve. Background Technology

[0002] Chemical environmental protection refers to a series of measures and technologies implemented in the chemical industry to reduce negative environmental impacts and ensure the safety and sustainability of the production process. Chemical environmental protection pneumatic isolation valve is a type of equipment used in the chemical industry, whose main function is to prevent media leakage and protect the environment and worker safety.

[0003] Currently, existing chemical environmental protection pneumatic isolation valves have several drawbacks during use. Firstly, some existing isolation valves are not convenient for monitoring the internal pressure of pipelines and most lack pressure relief structures, which can lead to pressure buildup inside the valve and potentially pose safety hazards. Secondly, many existing isolation valves lack proper filtration structures, and some chemical gases may contain particulate impurities, which could affect the purity of the chemical gases. Therefore, there is an urgent need for a chemical environmental protection pneumatic isolation valve to address these issues. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides a chemical environmental protection pneumatic isolation valve to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a chemical environmental protection pneumatic isolation valve, comprising:

[0006] The main structure includes a valve seat, a first valve ball, and a second valve ball, and the first valve ball is provided in two sets;

[0007] The filter structure includes a filter seat, a first limiting block, a filter element and a second limiting block, and one end of the filter seat is connected to the other end of the valve seat.

[0008] Preferably, pressure gauges are installed inside the upper surfaces of both ends of the valve seat, and first connecting seats are fixedly connected to the upper surfaces of both ends of the valve seat. First connecting rods are hinged to the interior of both sets of first connecting seats. The air pressure inside the two ends of the valve seat can be detected by the two sets of pressure gauges, and the two sets of first connecting rods can rotate inside the two sets of first connecting seats respectively.

[0009] Preferably, one end of each of the two sets of first connecting rods is fixedly connected to a first valve ball, and the size of the two sets of first valve balls is adapted to the internal size of the valve seat. When the two sets of first connecting rods rotate, they can respectively drive the two sets of first valve balls to rotate inside the valve seat at both ends, thereby allowing the gas inside the valve seat to flow or to block the gas inside the valve seat at both ends.

[0010] Preferably, a pressure relief pipe is fixedly connected to the outer surface of one side of the valve seat, and the interior of the pressure relief pipe is connected to the interior of the valve seat. A second connecting seat is fixedly connected to the upper surface of the pressure relief pipe, and a second connecting rod is hinged to the interior of the second connecting seat. A second valve ball is fixedly connected to the lower end of the second connecting rod, and the size of the second valve ball is adapted to the size of the interior of the pressure relief pipe. Rotating the second connecting rod can drive the second valve ball to rotate inside the pressure relief pipe. Rotating the second valve ball to the open state can make the pressure relief pipe communicate with the interior of the valve seat in the middle position.

[0011] Preferably, a lower fixing plate is fixedly connected to the upper end of the outer surface of the filter seat, and a first limiting block is fixedly connected to the upper end of the inner surface of the filter seat. A filter element is provided inside the filter seat, a sealing cover is attached to the upper surface of the filter seat, and a second limiting block is fixedly connected to the lower surface of the sealing cover. The size and position of the second limiting block are adapted to the size and position of the first limiting block. By setting the filter element, the chemical gas passing through the filter seat can be filtered, thereby improving the purity of the gas output from the filter seat.

[0012] Preferably, an upper fixing plate is fixedly connected to the outer surface of the sealing cover, and the position of the upper fixing plate corresponds to the position of the lower fixing plate. The upper fixing plate is internally threaded with a fixing bolt, and the lower fixing plate is internally threaded with a threaded hole, the size of which is adapted to the size of the fixing bolt. The engagement of the first limiting block and the second limiting block can improve the sealing performance when the sealing cover and the filter seat are in contact. Furthermore, a rubber sealing gasket is provided on the lower surface of the sealing cover, which can further improve the airtightness inside the filter seat.

[0013] The technical effects and advantages of this utility model are as follows: This utility model can detect the air pressure inside both ends of the valve seat by using two sets of pressure gauges. When the air pressure inside one end of the valve seat is too high, the first valve ball at the corresponding end can be opened, followed by the second valve ball, which can release the pressure. This design can avoid the situation of excessive pressure inside the valve seat and the pipes connecting the two ends, thereby improving the safety of the equipment during use to a certain extent.

[0014] This utility model uses a filter element to filter the gas passing through the filter seat. By rotating the fixing bolt, the gas can be disengaged from the lower fixing plate. Then, by rotating the sealing cover, the second limiting block can be disengaged from the first limiting block. At this point, the sealing cover can be opened, allowing the filter element to be replaced. This design can improve the purity of the gas output from the filter seat and make it easier for workers to replace the filter element. Attached Figure Description

[0015] Figure 1 is a three-dimensional structural diagram of this utility model.

[0016] Figure 2 is a three-dimensional structural diagram of the main structure of this utility model.

[0017] Figure 3 is a three-dimensional exploded view of the main structure of this utility model.

[0018] Figure 4 is an exploded three-dimensional structural diagram of the filter structure of this utility model.

[0019] Figure 5 is a partial exploded view of the three-dimensional structure of the filter structure of this utility model.

[0020] The attached figures are labeled as follows: 1. Main structure; 11. Valve seat; 12. Pressure gauge; 13. First connecting seat; 14. First connecting rod; 15. First valve ball; 16. Pressure relief pipe; 17. Second connecting seat; 18. Second connecting rod; 19. Second valve ball; 2. Filter structure; 21. Filter seat; 22. Lower fixing plate; 23. First limiting block; 24. Filter element; 25. Sealing cover; 26. Second limiting block; 27. Upper fixing plate; 28. Fixing bolt. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The chemical environmental protection pneumatic isolation valve involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Example 1

[0023] As shown in Figures 1 to 3, this utility model provides a chemical environmental protection pneumatic isolation valve, comprising: a main structure 1, which includes a valve seat 11, a first valve ball 15, and a second valve ball 19. Two sets of first valve balls 15 are provided. Pressure gauges 12 are installed inside the upper surfaces at both ends of the valve seat 11. First connecting seats 13 are fixedly connected to the upper surfaces at both ends of the valve seat 11. First connecting rods 14 are hinged to the interiors of both sets of first connecting seats 13. One end of each set of first connecting rods 14 is fixedly connected to a first valve ball 15. The dimensions of the two sets of first valve balls 15 are... The pressure relief pipe 16 is fixedly connected to the outer surface of one side of the valve seat 11 to match the internal dimensions of the valve seat 11. The interior of the pressure relief pipe 16 is connected to the interior of the valve seat 11. A second connecting seat 17 is fixedly connected to the upper surface of the pressure relief pipe 16. A second connecting rod 18 is hinged to the interior of the second connecting seat 17. A second valve ball 19 is fixedly connected to the lower end of the second connecting rod 18. The size of the second valve ball 19 matches the internal dimensions of the pressure relief pipe 16. The air pressure inside both ends of the valve seat 11 can be detected by two sets of pressure gauges 12. The rod 14 can rotate inside the two sets of first connecting seats 13 respectively. When the two sets of first connecting rods 14 rotate, they can drive the two sets of first valve balls 15 to rotate inside the valve seats 11 at both ends respectively. Thus, the two sets of first valve balls 15 can be used to allow gas to flow through the two ends of the valve seats 11 or to seal the two ends of the valve seats 11. When the two sets of first valve balls 15 are closed at the same time, the sealing performance inside the valve seats 11 can be improved. When one set of first valve balls 15 is open, it can allow gas from one end of the valve seats 11 to enter the middle position inside the valve seats 11. One end of the second valve ball 19 is used to connect to the exhaust gas collection device. Rotating the second connecting rod 18 can drive the second valve ball 19 to rotate inside the pressure relief pipe 16. Rotating the second valve ball 19 to the open state allows the pressure relief pipe 16 to communicate with the interior of the valve seat 11. At this time, gas can be discharged outward through the valve seat 11 and the pressure relief pipe 16, thereby reducing the gas pressure inside the pipe. This design can minimize the occurrence of excessive pressure inside the valve seat 11 and the pipes connected at both ends, thereby improving the safety of the equipment during use to a certain extent.

[0024] Example 2

[0025] As shown in Figures 4 and 5, this embodiment also proposes a filter structure 2, which includes a filter seat 21, a first limiting block 23, a filter element 24, and a second limiting block 26. One end of the filter seat 21 is connected to the other end of the valve seat 11. A lower fixing plate 22 is fixedly connected to the upper end of the outer surface of the filter seat 21, and the first limiting block 23 is fixedly connected to the upper end of the inner surface of the filter seat 21. The filter element 24 is disposed inside the filter seat 21. A sealing cover 25 is attached to the upper surface of the filter seat 21, and the second limiting block 26 is fixedly connected to the lower surface of the sealing cover 25. The size and position of the second limiting block 26 are adapted to the size and position of the first limiting block 23. An upper fixing plate 27 is fixedly connected to the outer surface of the sealing cover 25, and the position of the upper fixing plate 27 corresponds to the position of the lower fixing plate 22. A fixing bolt 2 is threadedly connected to the inside of the upper fixing plate 27. 8. The lower fixing plate 22 has a threaded hole inside, and the size of the threaded hole is adapted to the size of the fixing bolt 28. The filter element 24 is made of polypropylene, which makes the filter element 24 highly resistant to acids and alkalis, and can be compatible with most chemical gases. Therefore, the filter element 24 can filter the gas passing through the filter seat 21. This design can improve the purity of the gas output from the filter seat 21. The engagement of the first limiting block 23 and the second limiting block 26 can improve the sealing performance when the sealing cover 25 is attached to the filter seat 21. When the fixing bolt 28 is threaded into the interior of the upper fixing plate 27 and the lower fixing plate 22, the position of the sealing cover 25 and the filter seat 21 can be fixed. The lower surface of the sealing cover 25 is provided with a rubber sealing gasket, which can further improve the airtightness inside the filter seat 21. This design also makes it easier for workers to replace the filter element 24.

[0026] Working principle: When the equipment is in use, the air pressure inside both ends of the valve seat 11 can be detected by two sets of pressure gauges 12. When the air pressure inside one end of the valve seat 11 is too high, the first valve ball 15 at the corresponding end can be opened, and then the second valve ball 19 can be opened, at which time the pressure can be released.

[0027] The filter element 24 can filter the gas passing through the filter seat 21. When the filter element 24 needs to be replaced, first rotate the fixing bolt 28 to disengage it from the lower fixing plate 22. Then rotate the sealing cover 25 to drive the second limiting block 26 to disengage from the first limiting block 23. At this time, the sealing cover 25 can be opened, so that the filter element 24 can be replaced. The above is the complete working principle of this utility model.

[0028] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0029] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0030] In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A chemical environmental protection pneumatic isolation valve, characterized in that, include: The main structure (1) includes a valve seat (11), a first valve ball (15) and a second valve ball (19), and the first valve ball (15) is provided in two sets; the filter structure (2) includes a filter seat (21), a first limiting block (23), a filter element (24) and a second limiting block (26), and one end of the filter seat (21) is connected to the other end of the valve seat (11).

2. The chemical environmental protection pneumatic isolation valve according to claim 1, characterized in that: Pressure gauges (12) are installed inside the upper surfaces of both ends of the valve seat (11), and first connecting seats (13) are fixedly connected to the upper surfaces of both ends of the valve seat (11), and first connecting rods (14) are hinged inside the two sets of first connecting seats (13).

3. The chemical environmental protection pneumatic isolation valve according to claim 2, characterized in that: One end of each of the two sets of first connecting rods (14) is fixedly connected to a first valve ball (15), and the size of the two sets of first valve balls (15) is adapted to the internal size of the valve seat (11).

4. The chemical environmental protection pneumatic isolation valve according to claim 3, characterized in that: A pressure relief pipe (16) is fixedly connected to the outer surface of one side of the valve seat (11), and the interior of the pressure relief pipe (16) is connected to the interior of the valve seat (11). A second connecting seat (17) is fixedly connected to the upper surface of the pressure relief pipe (16). A second connecting rod (18) is hinged to the interior of the second connecting seat (17), and a second valve ball (19) is fixedly connected to the lower end of the second connecting rod (18). The size of the second valve ball (19) is adapted to the size of the interior of the pressure relief pipe (16).

5. A chemical environmental protection pneumatic isolation valve according to claim 1, characterized in that: A lower fixing plate (22) is fixedly connected to the upper end of the outer surface of the filter seat (21), and a first limiting block (23) is fixedly connected to the upper end of the inner surface of the filter seat (21). A filter element (24) is provided inside the filter seat (21). A sealing cover (25) is attached to the upper surface of the filter seat (21), and a second limiting block (26) is fixedly connected to the lower surface of the sealing cover (25). The size and position of the second limiting block (26) are adapted to the size and position of the first limiting block (23).

6. A chemical environmental protection pneumatic isolation valve according to claim 5, characterized in that: An upper fixing plate (27) is fixedly connected to the outer surface of the sealing cover (25), and the position of the upper fixing plate (27) corresponds to the position of the lower fixing plate (22). The upper fixing plate (27) is internally threaded with a fixing bolt (28), and the lower fixing plate (22) is internally threaded with a threaded hole, and the size of the threaded hole is adapted to the size of the fixing bolt (28).

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