Mechanical two-way passive explosion-proof valve

Abstract

The invention discloses a mechanical two-way passive explosion-proof valve, and relates to the technical field of explosion-proof valves. The mechanical two-way passive explosion-proof valve comprises two L-shaped supporting plates, valve paths are fixedly connected to the upper surfaces of the two L-shaped supporting plates, fixed mounting flanges are arranged on the opposite faces of the two valve paths, two fixing rods are fixedly connected to the upper inner wall and the lower inner wall of each valve path, and movable sleeves are fixedly connected to the opposite faces of the two front-back corresponding fixing rods; when the valve clack closes the fixed guide rod, the lower end of the fixed guide rod is sequentially separated from the fixed hole and the inner wall of the movable sleeve, the auxiliary spring located on the rear side loses the blocking force and rapidly resets, the passive valve guide rod located on the rear side is pushed to move forwards through the inner wall of the movable sleeve, and the front end of the passive valve guide rod moves forwards; when explosion occurs, the two fixing blocks can make contact with the surface of the passive valve clack, the valve clack is pushed to be attached to the surface of the valve diameter located on the front side, explosion is blocked, the effects of explosion suppression and secondary explosion prevention are achieved, and the safety of enterprises during production is improved.

Description

Technical Field

[0001] The invention relates to the technical field of explosion-proof valves, and in particular to a mechanical two-way passive explosion-proof valve. Background Art

[0002] At present, in order to prevent dust explosions, various research institutions and relevant majors of universities have basically adopted explosion-proof technology, explosion suppression technology, explosion venting technology and inerting technology on the basis of absorbing foreign and domestic industry technologies. Among them, explosion-proof technology generally adopts pipeline passive one-way quick-closing valve or active one-way quick-closing valve to isolate the energy that propagates upstream along the pipeline due to the risk of explosion in the rear-end dust collection device, thereby preventing the explosion shock wave from propagating to other interconnected areas. However, dust pipelines are mostly bidirectional operations, and one-way explosion-proof valves no longer meet actual working conditions. Therefore, a mechanical bidirectional passive explosion-proof valve is needed. Summary of the invention

[0003] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a mechanical two-way passive explosion-proof valve, which can solve the problem that explosion-proof technology generally adopts a passive one-way quick-closing valve or an active one-way quick-closing valve in the pipeline, thereby isolating the energy that propagates upstream along the pipeline due to the risk of explosion in the rear-end dust collection device, thereby preventing the explosion shock wave from propagating to other interconnected areas. However, most dust pipelines operate in two directions, and the one-way explosion-proof valve no longer meets the actual working conditions. Therefore, a mechanical two-way passive explosion-proof valve is needed.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a mechanical two-way passive explosion-proof valve, comprising two L-shaped support plates;

[0005] The upper surfaces of the two L-shaped support plates are fixedly connected with valve diameters, and the opposite surfaces of the two valve diameters are provided with fixed mounting flanges;

[0006] Among them, the upper and lower inner walls of the valve diameter are fixedly connected with two fixed rods, the opposite surfaces of the two front and rear corresponding fixed rods are fixedly connected with a moving sleeve, and the rear inner wall of the moving sleeve is fixedly connected with an auxiliary spring;

[0007] Wherein, the rear end of the auxiliary spring is fixedly connected with a passive valve guide rod, and the passive valve guide rod is slidably connected to the inner wall of the moving sleeve;

[0008] Wherein, a fixing hole is opened on the upper surface of the passive valve guide rod, and fixing blocks are fixedly connected to the upper and lower surfaces of the passive valve guide rod.

[0009] Preferably, a circular sleeve is fixedly connected to the upper surface of the valve diameter, a sliding sleeve is slidably connected to the inner wall of the circular sleeve, and a valve disc closing fixed guide rod is fixedly sleeved to the inner wall of the sliding sleeve;

[0010] The lower end of the valve disc closing fixed guide rod slides through the lower surface of the circular sleeve and slides to extend to the inner wall of the valve diameter.

[0011] Preferably, the lower end of the valve flap closing fixed guide rod slides into the interior of the movable sleeve, the upper end of the valve flap closing fixed guide rod slides out of the upper surface of the circular sleeve, and the upper end of the valve flap closing fixed guide rod is fixedly connected with a circular fixed block.

[0012] Preferably, the upper surface of the valve diameter is fixedly connected to a fixed mounting plate, and the upper surface of the fixed mounting plate is fixedly connected to an electric telescopic rod;

[0013] The telescopic end of the electric telescopic rod is fixedly connected with a concave connecting plate, and one end of the concave connecting plate away from the electric telescopic rod is fixedly connected with a circular fixing block.

[0014] Preferably, a connecting plate is fixedly connected to the upper surface of the valve diameter, and a flameproof detection signal sensor is fixedly installed on the connecting plate;

[0015] The right side of the valve diameter is fixedly connected with a connecting pipe communicating therewith, the front surface of the connecting pipe is fixedly connected with a protection box, and the interior of the protection box is fixedly connected with a partition.

[0016] Preferably, a servo motor is fixedly installed inside the protective box, and the output end of the servo motor is fixedly connected to a connecting shaft. The rear end of the connecting shaft rotates to pass through the rear surface of the partition and rotates to extend into the inner wall of the connecting pipe. The rear end of the connecting shaft is fixedly connected to a circular block, which is rotatably clamped in the inner wall of the connecting pipe.

[0017] Preferably, a circular through groove is provided on the left side of the circular block, the circular through groove runs through the right side of the circular block, and an explosion-proof box communicating with the connecting pipe is fixedly connected to the right side of the connecting pipe;

[0018] Among them, the left and right inner walls of the explosion-proof box are fixedly connected with multiple blocking plates that are arranged in an up and down tilted and staggered manner. The right side of the explosion-proof box is fixedly connected with a fixed rectangular air outlet box that is connected to it. The structures on the two valve diameters are arranged in a front and rear mirror image.

[0019] Preferably, valve cavities are welded to the opposite surfaces of the two valve diameters, the two valve cavities are fixed together by flanges, and passive valve flaps are arranged inside the two valve cavities;

[0020] A circular hole is provided on the front surface of the passive valve disc, and the circular hole penetrates through the rear surface of the passive valve disc. The opposite ends of the two passive valve guide rods slide and penetrate into the inner wall of the circular hole.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) In the mechanical two-way passive explosion-proof valve, the lower end of the fixed guide rod of the valve disc closes and successively separates from the fixed hole and the inner wall of the movable sleeve, and the auxiliary spring at the rear side loses its blocking force and quickly resets, pushing the passive valve guide rod at the rear side to move forward through the inner wall of the movable sleeve, and the front end of the passive valve guide rod moves forward. The two fixed blocks will contact the surface of the passive valve disc, pushing the valve disc to stick to the surface of the valve diameter at the front side and blocking the explosion, thereby playing the role of explosion isolation and avoiding secondary explosion, reducing explosion disasters, and improving the safety of enterprises during production.

[0023] (2) The mechanical two-way passive explosion-proof valve is reset by an electric telescopic rod, so that the valve disc closes and the fixed guide rod is clamped into the gap of the auxiliary spring to prevent the auxiliary spring from resetting, thereby improving the stability of the passive valve disc during explosion-proofing.

[0024] (3) In this mechanical two-way passive explosion-proof valve, the connecting shaft drives the circular block to rotate so that the circular groove is parallel to the connecting pipe. The pressure inside the valve diameter will enter the interior of the explosion-proof box through the connecting pipe, and then be discharged to the interior of the pre-installed pressure relief tank outside through the rectangular air outlet box, thereby achieving the effect of relieving the pressure inside the valve diameter, reducing the internal pressure of the valve diameter, and further improving the explosion-proof effect.

[0025] (4) When a strong airflow enters the explosion-proof box, the multiple blocking plates of the mechanical two-way passive explosion-proof valve will play a blocking role, thereby reducing the impact force of the airflow and improving the safety of the final discharge of the airflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a right schematic diagram of the present invention as a whole;

[0029] Figure 3 This is a schematic diagram of the connection between the movable sleeve and the passive valve guide rod of the present invention;

[0030] Figure 4 It is a schematic diagram of the surface of the passive valve guide rod of the present invention;

[0031] Figure 5 This is a schematic diagram of the connection between the servo motor and the connecting shaft of the present invention;

[0032] Figure 6 It is a schematic diagram of the connection between the sliding sleeve and the valve disc closing fixed guide rod of the present invention;

[0033] Figure 7 It is a schematic diagram of the interior of the explosion-proof box of the present invention.

[0034] 1. L-shaped support plate; 2. electric telescopic rod; 3. explosion-proof box; 4. protection box; 5. connecting pipe; 6. concave connecting plate; 7. circular fixing block; 8. connecting plate; 9. explosion-proof detection signal sensor; 10. valve cavity; 11. valve diameter; 12. rectangular air outlet box; 13. fixed mounting plate; 14. valve disc closing fixed guide rod; 15. fixing rod; 16. moving sleeve; 17. passive valve guide rod; 18. passive valve disc; 19. fixing block; 20. circular sleeve; 21. circular hole; 22. fixing hole; 23. auxiliary spring; 24. servo motor; 25. partition; 26. connecting shaft; 27. circular block; 28. sliding sleeve; 29. ​​blocking plate; 30. fixed mounting flange; 31. circular through groove. DETAILED DESCRIPTION

[0035] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0036] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] In the description of the present invention, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0038] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0039] See also Figure 1-7 The present invention provides a technical solution: a mechanical two-way passive explosion-proof valve, comprising two L-shaped support plates 1, the upper surfaces of the two L-shaped support plates 1 are fixedly connected with valve diameters 11, and the opposite surfaces of the two valve diameters 11 are provided with fixed mounting flanges 30;

[0040] The upper and lower inner walls of the valve diameter 11 are fixedly connected to two fixed rods 15, and the opposite surfaces of the two front and rear corresponding fixed rods 15 are fixedly connected to a movable sleeve 16, and the rear inner wall of the movable sleeve 16 is fixedly connected to an auxiliary spring 23;

[0041] The rear end of the auxiliary spring 23 is fixedly connected to a passive valve guide rod 17, and the passive valve guide rod 17 is slidably connected to the inner wall of the moving sleeve 16;

[0042] A fixing hole 22 is formed on the upper surface of the passive valve guide rod 17 , and fixing blocks 19 are fixedly connected to the upper and lower surfaces of the passive valve guide rod 17 .

[0043] Furthermore, a circular sleeve 20 is fixedly connected to the upper surface of the valve diameter 11, a sliding sleeve 18 is slidably connected to the inner wall of the circular sleeve 20, and a valve disc closing fixed guide rod 14 is fixedly sleeved to the inner wall of the sliding sleeve 18;

[0044] The lower end of the valve disc closing fixed guide rod 14 slides through the lower surface of the circular sleeve 20 and slides to extend to the inner wall of the valve diameter 11 .

[0045] Furthermore, the lower end of the valve flap closing fixed guide rod 14 slides through the interior of the movable sleeve 16, and the upper end of the valve flap closing fixed guide rod 14 slides through the upper surface of the circular sleeve 20, and the upper end of the valve flap closing fixed guide rod 14 is fixedly connected with a circular fixed block 7.

[0046] Furthermore, the upper surface of the valve diameter 11 is fixedly connected with a fixed mounting plate 13, and the upper surface of the fixed mounting plate 13 is fixedly connected with an electric telescopic rod 2;

[0047] The telescopic end of the electric telescopic rod 2 is fixedly connected with a concave connecting plate 6 , and one end of the concave connecting plate 6 away from the electric telescopic rod 2 is fixedly connected with a circular fixing block 7 .

[0048] Furthermore, a connecting plate 8 is fixedly connected to the upper surface of the valve diameter 11, and an explosion-proof detection signal sensor 9 is fixedly installed on the connecting plate 8;

[0049] The right side of the valve diameter 11 is fixedly connected with a connecting pipe 5 communicating therewith, the front surface of the connecting pipe 5 is fixedly connected with a protection box 4 , and the interior of the protection box 4 is fixedly connected with a partition plate 25 .

[0050] Furthermore, a servo motor 24 is fixedly installed inside the protective box 4, and the output end of the servo motor 24 is fixedly connected to a connecting shaft 26. The rear end of the connecting shaft 26 rotates to pass through the rear surface of the partition 25 and rotates to extend into the inner wall of the connecting pipe 5. The rear end of the connecting shaft 26 is fixedly connected to a circular block 27, which is rotatably clamped in the inner wall of the connecting pipe 5.

[0051] Furthermore, a circular through groove 31 is provided on the left side of the circular block 27, and the circular through groove 31 passes through the right side of the circular block 27, and the right side of the connecting pipe 5 is fixedly connected to the explosion-proof box 3 communicated therewith;

[0052] Among them, the left and right inner walls of the explosion-proof box 3 are fixedly connected with multiple blocking plates 29 arranged in an up and down tilted and staggered manner, and the right side of the explosion-proof box 3 is fixedly connected with a fixed rectangular air outlet box 12 connected thereto, and the structures on the two valve diameters 11 are arranged in a front and back mirror image.

[0053] Furthermore, valve cavities 10 are welded to the opposite surfaces of the two valve diameters 11, and the two valve cavities 10 are fixed together by flanges, and passive valve flaps 18 are arranged inside the two valve cavities 10;

[0054] A circular hole 21 is formed on the front surface of the passive valve flap 18 . The circular hole 21 penetrates the rear surface of the passive valve flap 18 . The opposite ends of the two passive valve guide rods 17 slide into the inner wall of the circular hole 21 .

[0055] Furthermore, when using a mechanical two-way passive explosion-proof valve, firstly, the valve diameter 11 is connected to the pipeline that needs to be explosion-proof through two fixed mounting flanges 30. When an explosion occurs on the front side of the pipeline, the pressure on the front side of the pipeline increases, and the electric telescopic rod 2 located at the rear side is automatically started. The telescopic end of the electric telescopic rod 2 drives the valve disc closing fixed guide rod 14 to move upward through the circular fixed block 7, so that the lower end of the valve disc closing fixed guide rod 14 is separated from the fixed hole 22 and the inner wall of the movable sleeve 16 in turn, and the auxiliary spring 23 located at the rear side loses its blocking force and is quickly reset, pushing the passive valve guide rod 2 located at the rear side to move upward. The rod 17 moves forward through the inner wall of the movable sleeve 16, and the front end of the passive valve guide rod 17 moves forward. The two fixed blocks 19 will contact the surface of the passive valve flap 18, pushing the passive valve flap 18 to stick to the surface of the front valve diameter 11 and block the explosion, thereby playing a role in explosion isolation and avoiding secondary explosions, reducing explosion disasters, and improving the safety of enterprises during production. At the same time, the electric telescopic rod 2 is reset, so that the valve flap closing fixed guide rod 14 is clamped into the gap of the auxiliary spring 23 to prevent the auxiliary spring 23 from resetting, thereby improving the stability of the passive valve flap 18 during explosion isolation.

[0056] Furthermore, when the explosion pressure inside the front valve diameter 11 is too large, the servo motor 24 located on the front side is started, and the servo motor 24 drives the connecting shaft 26 to rotate, and the connecting shaft 26 drives the circular block 27 to rotate, so that the circular through groove 31 is parallel to the connecting pipe 5, and the pressure inside the valve diameter 11 will enter the interior of the explosion-proof box 3 through the connecting pipe 5, and then be discharged to the interior of the pre-installed pressure relief tank outside through the rectangular air outlet box 12, thereby achieving the effect of relieving the pressure inside the valve diameter 11, reducing the internal pressure of the valve diameter 11, and further improving the explosion-proof effect.

[0057] Furthermore, when a strong airflow enters the interior of the explosion-proof box 3, the plurality of blocking plates 29 will play a blocking role, thereby successively reducing the impact force of the airflow and improving the safety of the final discharge of the airflow.

[0058] Working principle: When using a mechanical two-way passive explosion-proof valve, first connect the valve diameter 11 to the pipeline that needs to be explosion-proof through two fixed mounting flanges 30. When an explosion occurs on the front side of the pipeline, the pressure on the front side of the pipeline increases, and the electric telescopic rod 2 located at the rear side automatically starts. The telescopic end of the electric telescopic rod 2 drives the valve disc closing fixed guide rod 14 to move upward through the circular fixed block 7, so that the lower end of the valve disc closing fixed guide rod 14 is separated from the fixed hole 22 and the inner wall of the movable sleeve 16 in turn, and the auxiliary spring 23 located at the rear side loses its blocking force and quickly resets, pushing the passive valve guide rod at the rear side to move upward. The rod 17 moves forward through the inner wall of the movable sleeve 16, and the front end of the passive valve guide rod 17 moves forward. The two fixed blocks 19 will contact the surface of the passive valve flap 18, pushing the passive valve flap 18 to stick to the surface of the front valve diameter 11 and block the explosion, thereby playing a role in explosion isolation and avoiding secondary explosions, reducing explosion disasters, and improving the safety of enterprises during production. At the same time, the electric telescopic rod 2 is reset, so that the valve flap closing fixed guide rod 14 is clamped into the gap of the auxiliary spring 23 to prevent the auxiliary spring 23 from resetting, thereby improving the stability of the passive valve flap 18 during explosion isolation.

[0059] Furthermore, when the explosion pressure inside the front valve diameter 11 is too large, the servo motor 24 located on the front side is started, and the servo motor 24 drives the connecting shaft 26 to rotate, and the connecting shaft 26 drives the circular block 27 to rotate, so that the circular through groove 31 is parallel to the connecting pipe 5, and the pressure inside the valve diameter 11 will enter the interior of the explosion-proof box 3 through the connecting pipe 5, and then be discharged to the interior of the pre-installed pressure relief tank outside through the rectangular air outlet box 12, thereby achieving the effect of relieving the pressure inside the valve diameter 11 and reducing the internal pressure of the valve diameter 11.

[0060] Furthermore, when a strong airflow enters the interior of the explosion-proof box 3, the plurality of blocking plates 29 will play a blocking role, thereby successively reducing the impact force of the airflow.

[0061] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A mechanical two-way passive explosion-proof valve, characterized in that: include: Two L-shaped support plates (1); The upper surfaces of the two L-shaped support plates (1) are fixedly connected to the valve diameter (11), and the opposite surfaces of the two valve diameters (11) are provided with fixed mounting flanges (30); The upper and lower inner walls of the valve diameter (11) are fixedly connected to two fixed rods (15), the opposite surfaces of the two front and rear corresponding fixed rods (15) are fixedly connected to a movable sleeve (16), and the rear inner wall of the movable sleeve (16) is fixedly connected to an auxiliary spring (23); The rear end of the auxiliary spring (23) is fixedly connected to a passive valve guide rod (17), and the passive valve guide rod (17) is slidably connected to the inner wall of the moving sleeve (16); The upper surface of the passive valve guide rod (17) is provided with a fixing hole (22), and the upper and lower surfaces of the passive valve guide rod (17) are fixedly connected to fixing blocks (19).

2. A mechanical two-way passive explosion-proof valve according to claim 1, characterized in that: The upper surface of the valve diameter (11) is fixedly connected with a circular sleeve (20), the inner wall of the circular sleeve (20) is slidably connected with a sliding sleeve (28), and the inner wall of the sliding sleeve (28) is fixedly sleeved with a valve disc closing fixed guide rod (14); The lower end of the valve disc closing fixed guide rod (14) slides through the lower surface of the circular sleeve (20) and slides to extend to the inner wall of the valve diameter (11).

3. A mechanical two-way passive explosion-proof valve according to claim 2, characterized in that: The lower end of the valve flap closing fixed guide rod (14) slides through the interior of the movable sleeve (16), and the upper end of the valve flap closing fixed guide rod (14) slides through the upper surface of the circular sleeve (20). The upper end of the valve flap closing fixed guide rod (14) is fixedly connected to a circular fixed block (7).

4. A mechanical two-way passive explosion-proof valve according to claim 1, characterized in that: The upper surface of the valve diameter (11) is fixedly connected to a fixed mounting plate (13), and the upper surface of the fixed mounting plate (13) is fixedly connected to an electric telescopic rod (2); The telescopic end of the electric telescopic rod (2) is fixedly connected to a concave connecting plate (6), and one end of the concave connecting plate (6) away from the electric telescopic rod (2) is fixedly connected to a circular fixing block (7).

5. A mechanical two-way passive explosion-proof valve according to claim 1, characterized in that: The upper surface of the valve diameter (11) is fixedly connected to a connecting plate (8), and a flameproof detection signal sensor (9) is fixedly mounted on the connecting plate (8); The right side of the valve diameter (11) is fixedly connected to a connecting pipe (5) communicating therewith, the front surface of the connecting pipe (5) is fixedly connected to a protection box (4), and the interior of the protection box (4) is fixedly connected to a partition (25).

6. A mechanical two-way passive explosion-proof valve according to claim 5, characterized in that: A servo motor (24) is fixedly installed inside the protective box (4), and the output end of the servo motor (24) is fixedly connected to a connecting shaft (26). The rear end of the connecting shaft (26) rotates to penetrate the rear surface of the partition (25) and rotates to extend into the inner wall of the connecting pipe (5). The rear end of the connecting shaft (26) is fixedly connected to a circular block (27), and the circular block (27) is rotatably engaged in the inner wall of the connecting pipe (5).

7. A mechanical two-way passive explosion-proof valve according to claim 6, characterized in that: A circular through groove (31) is provided on the left side of the circular block (27), and the circular through groove (31) runs through the right side of the circular block (27). The right side of the connecting pipe (5) is fixedly connected to an explosion-proof box (3) communicating therewith; The left and right inner walls of the explosion-proof box (3) are fixedly connected to a plurality of blocking plates (29) arranged in an up-and-down tilted and staggered manner, the right side of the explosion-proof box (3) is fixedly connected to a rectangular air outlet box (12) in communication therewith, and the structures on the two valve diameters (11) are arranged in a front-to-back mirror image.

8. The mechanical two-way passive explosion-proof valve according to claim 1, characterized in that: The opposite surfaces of the two valve diameters (11) are both welded with valve cavities (10), the two valve cavities (10) are fixed together via flanges, and passive valve flaps (18) are arranged inside the two valve cavities (10); A circular hole (21) is provided on the front surface of the passive valve flap (18), and the circular hole (21) penetrates the rear surface of the passive valve flap (18). The opposite ends of the two passive valve guide rods (17) slide into the inner wall of the circular hole (21).

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