Explosion-proof positive pressure purging device

Abstract

The utility model provides an explosion-proof positive pressure purging device, which relates to the technical field of positive pressure explosion-proof type instrument equipment and comprises an explosion-proof cabinet, an air processor is fixedly mounted at the top of the explosion-proof cabinet, the input end of the air processor is fixedly communicated with a first control valve, and the input end of the first control valve is fixedly communicated with a first air inlet pipe. According to the device, when the device supplies air, the fan blades can be driven to rotate, the power storage spring is driven to deform and store energy through the disc, when the main air supply device breaks down, the power storage spring can release energy to drive the first rotating shaft to rotate only by releasing the first rotating shaft through the electric clamp, and starting of the standby air supply device is achieved; the device can still supply gas continuously in emergency, the reliability and safety of the whole system are improved, the positive pressure state in the shell is kept all the time, explosion accidents are avoided, the continuity and reliability of the instrument are also improved through the two gas supply devices, and downtime and production loss caused by device faults can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of positive pressure explosion-proof instrument equipment, in particular to an explosion-proof positive pressure purge device. Background Art

[0002] Positive pressure explosion-proof instrument equipment is an important industrial safety equipment, widely used in flammable and explosive environments such as petroleum, chemical, and mining. Its core principle is to effectively prevent external explosive gases or steam from entering the equipment by maintaining a positive pressure state inside the equipment, thereby protecting the safe operation of internal electrical equipment and instruments.

[0003] Most positive pressure explosion-proof instrument equipment does not have a backup air supply device. Once the main air supply device fails, the pressure inside the instrument cannot be maintained. This will not only affect the normal operation of the instrument, resulting in extended production downtime and thus reduced production efficiency, but also cause the explosion-proof performance of the equipment to deteriorate, increasing the risk of explosion. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that when the above equipment is in use, the working efficiency and safety of the equipment are reduced due to the lack of a backup air supply device, and thus an explosion-proof positive pressure purge device is proposed.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: an explosion-proof positive pressure purge device, comprising an explosion-proof cabinet, an air handler fixedly installed on the top of the explosion-proof cabinet, the input end of the air handler fixedly connected to a control valve 1, the input end of the control valve 1 fixedly connected to an air intake pipe 1, the output end of the air handler fixedly connected to an air intake pipe 2, and the output end of the air intake pipe 2 is fixedly connected to the input end of the explosion-proof cabinet, the output end of the air intake pipe 1 is fixedly connected to an air intake pipe 3, the output end of the air intake pipe 3 is fixedly connected to a control valve 2, and the output end of the control valve 2 is fixedly connected to the input end of the explosion-proof cabinet, A mounting shell is fixedly connected thereto, a one-way valve is fixedly connected to one side of the outer wall of the mounting shell, a plurality of mounting seats with holes are fixedly inserted into the inner wall of the mounting shell, a plurality of power storage springs are fixedly installed on the inner walls of the plurality of mounting seats with holes, a rotating shaft is movably inserted between the inner walls of the plurality of mounting seats with holes, and the outer wall of the rotating shaft is movably inserted into the interior of the mounting shell, a group of cards are fixedly installed on the outer walls of the plurality of power storage springs, a plurality of discs are fixedly sleeved on the outer wall of the rotating shaft, and one side of the outer wall of the plurality of discs is fixedly connected to the outer wall of a group of cards.

[0006] Preferably, the outer wall fixed sleeve of the rotating shaft 1 is provided with a fan blade, the outer wall movable sleeve of the rotating shaft 1 is provided with a mounting shell 2, and the top of the explosion-proof cabinet is fixedly connected to the bottom of the mounting shell 2, and an electric clamp is fixedly installed on one side of the outer wall of the mounting shell 2.

[0007] Preferably, the outer wall fixing sleeve of the rotating shaft 1 is provided with a gear 1, the outer wall of the mounting shell 2 is provided with a group of sliding grooves, the outer wall of the mounting shell 2 is provided with a group of circular holes, the rotating shaft 2 is slidably connected between the inner walls of a group of the sliding grooves, the outer wall fixing sleeve of the rotating shaft 2 is provided with a gear 2, and the outer wall of the gear 2 is meshed with the inner wall of the gear 1, and the outer wall fixing sleeve of the rotating shaft 2 is provided with a gear 3.

[0008] Preferably, a rotating shaft three is movably inserted between the inner surface walls of a group of the circular holes, a gear four is fixedly sleeved on the outer surface wall of the rotating shaft three, and the outer surface wall of the gear four is meshedly connected with the inner surface wall of the gear three, a disc two is fixedly installed on one side of the outer wall of the rotating shaft three, a fixing rod is fixedly installed on one side of the outer wall of the disc two, and a force arm with a hole is movably sleeved on the outer surface wall of the fixing rod.

[0009] Preferably, a rotating shaft four is movably inserted into the inner surface wall of the lever arm with a hole, and a piston is movably sleeved on the outer surface wall of the rotating shaft four.

[0010] Preferably, an air chamber is provided on the movable sleeve of the outer wall of the piston, and one side of the outer wall of the air chamber is fixedly connected to one side of the outer wall of the explosion-proof cabinet, and the output end of the air chamber is fixedly connected to an air inlet pipe 4.

[0011] Preferably, the output end of the air inlet pipe four is fixedly connected to the one-way valve two, and the output end of the one-way valve two is fixedly connected to the input end of the air handler, and the output end of the air chamber is fixedly connected to the one-way valve three.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are:

[0013] In the utility model, when the device is supplying air, it can drive the fan blades to rotate, and drive the storage spring to deform and store energy through the disc. When the main air supply device fails, it is only necessary to release the fixation of the rotating shaft one through the electric clamp, and the storage spring will release energy to drive the rotating shaft one to rotate, thereby starting the backup air supply device, ensuring that the equipment can continue to supply air in an emergency, improving the reliability and safety of the entire system, ensuring that the inside of the shell always maintains a positive pressure state, and avoiding the occurrence of explosion accidents. The two air supply devices also improve the continuity and reliability of the instrument, which helps to reduce downtime and production losses caused by equipment failure.

[0014] In the utility model, the air handler can effectively remove dust and pollutants in the air after filtering the air, prevent these impurities from entering the interior of the equipment, protect electronic components from damage such as short circuit and rust, and ensure the long-term stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a main structural perspective diagram of the explosion-proof positive pressure purge device proposed in the utility model;

[0016] Figure 2 This is a partial three-dimensional schematic diagram of the explosion-proof positive pressure purge device proposed in the utility model;

[0017] Figure 3 This is a sectional exploded view of the internal structure of the explosion-proof positive pressure purge device proposed in the utility model;

[0018] Figure 4 This is a side view of the explosion-proof positive pressure purge device proposed in the utility model;

[0019] Figure 5 This is a partial top-down perspective view of the explosion-proof positive-pressure purge device proposed in the utility model.

[0020] Legend:

[0021] 1. Explosion-proof cabinet; 2. Air handler; 3. Control valve 1; 4. Inlet pipe 1; 5. Inlet pipe 2; 6. Inlet pipe 3; 7. Control valve 2; 8. Mounting shell 1; 9. One-way valve 1; 10. Mounting base with hole; 11. Power spring; 12. Rotating shaft 1; 13. Card; 14. Disc 1; 15. Fan blade; 16. Mounting shell 2; 17. Electric clamp; 18. Gear 1; 19. Slide; 20. Round hole; 21. Rotating shaft 2; 22. Gear 2; 23. Gear 3; 24. Rotating shaft 3; 25. Gear 4; 26. Disc 2; 27. Fixed rod; 28. Lever with hole; 29. ​​Rotating shaft 4; 30. Piston; 31. Air chamber; 32. Inlet pipe 4; 33. One-way valve 2; 34. One-way valve 3. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Example 1, as Figure 1-Figure 5As shown, the utility model provides an explosion-proof positive pressure purge device, including an explosion-proof cabinet 1, an air handler 2 is fixedly installed on the top of the explosion-proof cabinet 1, the input end of the air handler 2 is fixedly connected to a control valve 3, the input end of the control valve 3 is fixedly connected to an air intake pipe 4, the output end of the air handler 2 is fixedly connected to an air intake pipe 5, and the output end of the air intake pipe 5 is fixedly connected to the input end of the explosion-proof cabinet 1, the output end of the air intake pipe 4 is fixedly connected to an air intake pipe 3 6, the output end of the air intake pipe 3 6 is fixedly connected to a control valve 2 7, the output end of the control valve 2 7 is fixedly connected to a mounting shell 8, one side of the outer wall of the mounting shell 8 is fixedly connected to a one-way valve 9, and the inner surface wall of the mounting shell 8 is fixedly inserted with a plurality of mounting seats 10 with holes, multiple The inner surface walls of each perforated mounting seat 10 are fixedly mounted with a power storage spring 11, a rotating shaft 12 is movably inserted between the inner surface walls of multiple perforated mounting seats 10, and the outer surface wall of the rotating shaft 12 is movably inserted inside the mounting shell 18, and the outer surface walls of the multiple power storage springs 11 are fixedly mounted with a group of cards 13, the outer surface wall fixed sleeve of the rotating shaft 12 is provided with multiple discs 14, and one side of the outer wall of the multiple discs 14 is fixedly connected to the outer surface wall of a group of cards 13, the outer surface wall fixed sleeve of the rotating shaft 12 is provided with a fan 15, the outer surface wall movably sleeve of the rotating shaft 12 is provided with a mounting shell 2 16, and the top of the explosion-proof cabinet 1 is fixedly connected to the bottom of the mounting shell 2 16, and the outer wall side of the mounting shell 2 16 is fixedly mounted with an electric clamp 17.

[0025] The effect achieved by the entire embodiment 1 is that the user can first inject air into the air inlet pipe 1 4. At this time, the control valve 1 3 is opened and the control valve 2 7 is closed, and the air will enter the air handler 2. Then the air handler 2 can filter and remove dust and related pollutants in the air to prevent pollutants from entering the interior of the equipment and causing short circuits, rust, etc. in the electronic components. Then the air enters the explosion-proof cabinet 1 through the air inlet pipe 2 5. When the pressure sensor inside the explosion-proof cabinet 1 detects that the gas reaches a certain amount, the control valve 1 3 can be closed by the relevant controller and the control valve 2 7 can be started. At this time, the air inside the air intake pipe 4 will enter the mounting shell 8 through the air intake pipe 3 6, thereby blowing the fan blade 15 to start rotating, and the excess air will be discharged from the mounting shell 8 through the one-way valve 9. When the fan blade 15 rotates, it will drive the rotating shaft 12 to rotate synchronously. At this time, the disk 14 fixed on the outer wall of the rotating shaft is also driven to rotate, and the card 13 causes the power storage spring 11 to deform and store energy. When the power storage spring 11 stores a certain amount of energy, the user can stop injecting air and start the electric clamp 17 to clamp the rotating shaft 12 to prevent the stored energy from being released.

[0026] Example 2, as Figure 2-Figure 5As shown, the outer wall of the rotating shaft 12 is fixed with a gear 18, the outer wall of the mounting shell 2 16 is provided with a group of slide grooves 19, the outer wall of the mounting shell 2 16 is provided with a group of circular holes 20, and the inner surface walls of a group of slide grooves 19 are slidably connected with the rotating shaft 21, the outer wall of the rotating shaft 21 is fixed with a gear 22, and the outer wall of the gear 22 is meshed with the inner surface wall of the gear 1 18, the outer wall of the rotating shaft 21 is fixed with a gear 3 23, and the inner surface walls of a group of circular holes 20 are movably inserted with a rotating shaft 3 24, the outer wall of the rotating shaft 3 24 is fixed with a gear 4 25, and the outer wall of the gear 4 25 is meshed with the inner surface wall of the gear 3 23, and the outer wall of the rotating shaft 3 24 A disc 26 is fixedly installed on one side, and a fixing rod 27 is fixedly installed on one side of the outer wall of the disc 26. The outer wall of the fixing rod 27 is movably sleeved with a force arm 28 with a hole, and the inner wall of the force arm 28 with a hole is movably inserted with a rotating shaft 4 29. The outer wall of the rotating shaft 4 29 is movably sleeved with a piston 30, and the outer wall of the piston 30 is movably sleeved with an air chamber 31, and one side of the outer wall of the air chamber 31 is fixedly connected to one side of the outer wall of the explosion-proof cabinet 1, the output end of the air chamber 31 is fixedly connected to an air intake pipe 4 32, the output end of the air intake pipe 4 32 is fixedly connected to a one-way valve 2 33, and the output end of the one-way valve 2 33 is fixedly connected to the input end of the air handler 2, and the output end of the air chamber 31 is fixedly connected to a one-way valve 34.

[0027] The effect achieved by the entire embodiment 2 is that when the shaft 12 rotates, the gear 18 fixed on the outer wall rotates together, and drives the shaft 2 21 to move inside the slide groove 19 through the gear 2 22, so that the gear 3 23 is separated from the gear 4 25. When the main air supply device fails, the user can cancel the fixation of the shaft 12. When the shaft 12 is reversed, the shaft 2 21 can be driven by the gear 2 22 to move again inside the slide groove 19, so that the gear 3 23 is meshed with the gear 4 25. When the gear 18 rotates, it will drive the small gear 2 22 to rotate faster, and the small gear 22 drives the gear 3 23 to rotate synchronously through the shaft 2 21. Since the volume of the gear 4 25 is much smaller than the gear 3 23, the gear 3 23 will accelerate the rotation of the gear 4 25. When the wheel four 25 rotates, the disc two 26 and the fixed rod 27 on one side of the outer wall rotate accordingly, and the fixed rod 27 drives the force arm 28 with a hole and the rotating shaft four 29 to move up and down, pushing the piston 30 to move inside the air chamber 31. When the piston 30 rises in the air chamber 31, the internal pressure of the air chamber 31 decreases, and the outside air enters the air chamber 31 through the one-way valve three 34. When the piston 30 descends in the air chamber 31, the internal pressure of the air chamber 31 increases, and the air will pass through the air intake pipe four 32 and the one-way valve two 33 to the inside of the air handler 2, thereby completing the air supply work. The device has a backup air supply device. When the main air supply device fails or fails, it can start quickly and continue to provide protective gas to the instrument casing, which not only ensures the normal operation of the equipment, but also reduces the risk of failure.

[0028] Working principle: The user can first start the entire system by injecting air into the air inlet pipe 4. During this process, the control valve 3 remains in the open state, while the control valve 2 7 is in the closed state. The injected air will first enter the air handler 2, which can effectively filter and remove dust and various pollutants in the air, thereby preventing these pollutants from entering the equipment and causing adverse consequences such as short circuit and rust of electronic components. The treated air will then enter the explosion-proof cabinet 1 through the air inlet pipe 2 5. When the pressure sensor inside the explosion-proof cabinet 1 detects that the gas reaches a certain amount, it will trigger the relevant controller to automatically close the control valve 3 and start the control valve 2 7 at the same time. At this time, the air in the air inlet pipe 4 will be redirected through the inlet The air pipe 3 6 enters the interior of the mounting shell 18, and then blows the fan blade 15 to start rotating. The rotation of the fan blade 15 not only generates wind force, but also drives the rotating shaft 12 connected thereto to rotate synchronously. As the rotating shaft 12 rotates, the disc 14 fixedly mounted on its outer wall also rotates accordingly. The rotation of the disc 14 causes the power storage spring 11 to deform and store energy through the action of the card 13. When the power storage spring 11 stores enough energy, the user can stop injecting air into the air intake pipe 4 and start the electric clamp 17 to clamp the rotating shaft 12 to ensure that the stored energy will not be released prematurely due to accidents. When the rotating shaft 12 rotates, the gear 18 fixedly mounted on its outer wall also rotates synchronously. This rotation is achieved through the gap between the gears. The interaction drives the movement of the rotating shaft 21 inside the sliding groove 19, which separates the originally meshed gear 3 23 and gear 4 25, thereby realizing the switching of the transmission path. When the main air supply device fails, the user can cancel the fixation of the rotating shaft 12, and the power storage spring 11 starts to release energy to enable it to reverse. During the reversal process, the gear 18 drives the rotating shaft 2 21 to move inside the sliding groove 19 again through the gear 2 22, so that the gear 3 23 and the gear 4 25 are re-engaged. The gear 3 23 meshes with the gear 4 25, and the rotation of the gear 18 will accelerate the rotation of the small gear 2 22 through this transmission path. The small gear 22 then drives the gear 3 23 to rotate synchronously through the rotating shaft 21. Since the gear 4 25 The volume of gear three 23 is much smaller than that of gear three 23, so the rotation of gear three 23 will accelerate the rotation of gear four 25. The rotation of gear four 25 further drives the rotation of disk two 26 and fixed rod 27 on one side of its outer wall. The rotation of fixed rod 27 causes shaft four 29 to move up and down through the action of lever arm 28 with holes. This movement drives the movement of piston 30 inside air chamber 31. When piston 30 rises in air chamber 31, the pressure inside air chamber 31 decreases, thereby allowing outside air to enter air chamber 31 through one-way valve three 34. When piston 30 descends in air chamber 31, the pressure inside air chamber 31 increases, forcing air to flow into air handler 2 through intake pipe four 32 and one-way valve two 33, thereby completing the air supply work.

[0029] The wiring diagrams of the control valve 1 3, the control valve 2 7 and the electric clamp 17 in the present invention are common knowledge in the field, and their working principles are already known technologies. The models are selected according to the actual use, so the control method and wiring layout of the control valve 1 3, the control valve 2 7 and the electric clamp 17 are not explained in detail.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An explosion-proof positive pressure purge device, comprising an explosion-proof cabinet (1), characterized in that: An air handler (2) is fixedly installed on the top of the explosion-proof cabinet (1), the input end of the air handler (2) is fixedly connected to a control valve (3), the input end of the control valve (3) is fixedly connected to an air intake pipe (4), the output end of the air handler (2) is fixedly connected to an air intake pipe (5), and the output end of the air intake pipe (5) is fixedly connected to the input end of the explosion-proof cabinet (1), the output end of the air intake pipe (4) is fixedly connected to an air intake pipe (6), the output end of the air intake pipe (6) is fixedly connected to a control valve (7), the output end of the control valve (7) is fixedly connected to a mounting shell (8), and one side of the outer wall of the mounting shell (8) is fixedly connected. A one-way valve (9) is connected, and a plurality of mounting seats with holes (10) are fixedly inserted into the inner surface wall of the mounting shell (8), and a power storage spring (11) is fixedly installed on the inner surface wall of the plurality of mounting seats with holes (10), and a rotating shaft (12) is movably inserted between the inner surface walls of the plurality of mounting seats with holes (10), and the outer surface wall of the rotating shaft (12) is movably inserted into the interior of the mounting shell (8), and a group of cards (13) are fixedly installed on the outer surface wall of the plurality of power storage springs (11), and a plurality of discs (14) are fixedly sleeved on the outer surface wall of the rotating shaft (12), and one side of the outer wall of the plurality of discs (14) is fixedly connected to the outer surface wall of the group of cards (13).

2. The explosion-proof positive pressure purge device according to claim 1, characterized in that: The outer wall fixed sleeve of the rotating shaft 1 (12) is provided with a fan blade (15), the outer wall movable sleeve of the rotating shaft 1 (12) is provided with a mounting shell 2 (16), and the top of the explosion-proof cabinet (1) is fixedly connected to the bottom of the mounting shell 2 (16), and an electric clamp (17) is fixedly installed on one side of the outer wall of the mounting shell 2 (16).

3. The explosion-proof positive pressure purge device according to claim 2, characterized in that: The outer wall fixing sleeve of the rotating shaft 1 (12) is provided with a gear 1 (18), the outer wall of the mounting shell 2 (16) is provided with a group of slide grooves (19), the outer wall of the mounting shell 2 (16) is provided with a group of circular holes (20), the inner wall of the group of slide grooves (19) is slidably connected with the rotating shaft 2 (21), the outer wall fixing sleeve of the rotating shaft 2 (21) is provided with a gear 2 (22), and the outer wall of the gear 2 (22) is meshed with the inner wall of the gear 1 (18), and the outer wall fixing sleeve of the rotating shaft 2 (21) is provided with a gear 3 (23).

4. The explosion-proof positive pressure purge device according to claim 3, characterized in that: A rotating shaft three (24) is movably inserted between the inner surface walls of a group of circular holes (20), a gear four (25) is fixedly sleeved on the outer surface wall of the rotating shaft three (24), and the outer surface wall of the gear four (25) is meshedly connected with the inner surface wall of the gear three (23), a disc two (26) is fixedly installed on one side of the outer wall of the rotating shaft three (24), a fixing rod (27) is fixedly installed on one side of the outer wall of the disc two (26), and a force arm (28) with a hole is movably sleeved on the outer surface wall of the fixing rod (27).

5. The explosion-proof positive pressure purge device according to claim 4, characterized in that: A rotating shaft (29) is movably inserted into the inner surface wall of the lever arm (28) with a hole, and a piston (30) is movably sleeved on the outer surface wall of the rotating shaft (29).

6. The explosion-proof positive pressure purge device according to claim 5, characterized in that: An air chamber (31) is movably sleeved on the outer wall of the piston (30), and one side of the outer wall of the air chamber (31) is fixedly connected to one side of the outer wall of the explosion-proof cabinet (1). The output end of the air chamber (31) is fixedly connected to an air inlet pipe (32).

7. The explosion-proof positive pressure purge device according to claim 6, characterized in that: The output end of the air inlet pipe four (32) is fixedly connected to the one-way valve two (33), and the output end of the one-way valve two (33) is fixedly connected to the input end of the air processing unit (2), and the output end of the air chamber (31) is fixedly connected to the one-way valve three (34).

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