Dust explosion suppressant automatic release device adapted to a confined space

Abstract

The utility model provides dust explosion inhibitor automatic release device of adaptation closed space, relates to release device technical field, including support and bunker. In the utility model, through dust concentration detector can real time monitoring dust concentration in closed space, data transmission to PLC controller, realize the early warning of risk, avoid the hysteresis of artificial inspection, secondly, PLC controller automatic control motor and booster pump operation according to preset threshold value, need not manual intervention, response speed is fast, can start inhibitor release process when dust concentration reaches dangerous value fast, can curb risk in time in dust explosion early stage, thirdly, motor drive dustproof baffle automatic opening and closing, both in non - working state to the dust protection effect of spray head, avoid the release effect of spray head blockage influence, can open fast when working, ensure that inhibitor sprays smoothly, simultaneously, booster pump passes through first pipe and second pipe and sprays out inhibitor in storage tank from spray head in the form of high pressure.

Description

Technical Field

[0001] This utility model relates to the field of release device technology, and in particular to an automatic release device for dust explosion inhibitors adapted to confined spaces. Background Technology

[0002] In industrial fields such as grain processing, chemical production, and metal polishing, enclosed spaces (such as enclosed silos, reaction vessels, and pipelines) are prone to reaching the explosion limit due to dust accumulation and suspension. Once exposed to a source of ignition (such as static electricity, mechanical sparks, or electrical faults), dust explosions can occur, causing not only severe damage to equipment but also potential casualties, posing a significant threat to production safety.

[0003] Currently, traditional dust explosion prevention and control methods mostly rely on manual inspection and monitoring of dust concentration, or the use of fixed fire extinguishing devices for post-event remediation. Manual inspection suffers from problems such as delayed response and low monitoring accuracy, making it difficult to grasp changes in dust concentration in confined spaces in real time. Traditional fire extinguishing devices often cannot intervene in time at the initial stage of a dust explosion, and the process of releasing inhibitors lacks automated control, making it difficult to accurately adapt to the complex environment of confined spaces. This results in poor prevention and control effects and cannot effectively curb the occurrence and spread of dust explosions. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art and to propose an automatic release device for dust explosion inhibitors adapted to confined spaces.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an automatic release device for dust explosion inhibitors adapted to confined spaces, comprising a bracket and a hopper. A PLC controller is fixedly installed on one side of the hopper, a dust concentration detector is fixedly installed inside one side of the hopper, a fixing plate is fixedly installed on one side of the hopper, a booster pump is fixedly installed inside the fixing plate, a first pipe is fixedly installed at the input end of the booster pump, a second pipe is fixedly installed at the output end of the booster pump, and a nozzle is fixedly installed at the end of the second pipe away from the booster pump. The side of the hopper closest to the fixing plate... A storage box is fixedly installed, with an inlet pipe fixedly installed on the top of the storage box. A fixed sleeve is fixedly installed on one side of the hopper. A toothed column is slidably connected inside the fixed sleeve. A connecting rod is fixedly installed on the outer wall of the top of the toothed column. A connecting plate is fixedly installed on the end of the connecting rod away from the toothed column. A dustproof baffle is fixedly installed on the bottom end of the connecting plate. A frame is fixedly installed on the side of the hopper near the fixed sleeve. A rotating shaft is rotatably connected inside the frame. A worm gear is fixedly installed on the outer wall of the rotating shaft. A motor is fixedly installed on the side of the frame away from the hopper. A worm gear is fixedly installed on the output end of the motor.

[0006] Preferably, the second pipe is fixedly connected to the silo, and the first pipe is fixedly connected to the storage box.

[0007] Preferably, the worm and the worm wheel mesh with each other, and the worm wheel and the toothed column mesh with each other.

[0008] Preferably, the connecting plate is slidably connected to the hopper, and the dustproof baffle is slidably connected to the nozzle.

[0009] Preferably, the hopper is located inside the support frame, the hopper is fixedly connected to the support frame, and a limit block is fixedly installed at the bottom end of the toothed column.

[0010] Preferably, the dust concentration detector, booster pump, and motor are all electrically connected to the PLC controller.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this invention, a dust concentration detector can monitor the dust concentration in a confined space in real time and transmit the data to a PLC controller, enabling early warning of risks and avoiding the lag of manual inspections. Secondly, the PLC controller automatically controls the operation of the motor and booster pump according to preset thresholds, requiring no manual intervention and offering a fast response. It can quickly initiate the inhibitor release process when the dust concentration reaches a dangerous level, thus promptly containing the risk in the early stages of a dust explosion. Furthermore, the motor-driven dust baffle automatically opens and closes, providing dust protection for the nozzles when not in operation, preventing nozzle blockage and affecting the release effect, and opening quickly during operation to ensure the smooth spraying of the inhibitor. Simultaneously, the booster pump sprays the inhibitor from the storage tank at high pressure through the first and second pipes, allowing the inhibitor to diffuse evenly in the confined space with a wide coverage area, improving the efficiency of suppressing dust explosions. Attached Figure Description

[0012] Figure 1 A schematic diagram of the overall structure of the automatic release device for dust explosion inhibitors adapted to confined spaces proposed in this utility model. Figure 2 A partial cross-sectional view of the automatic release device for dust explosion inhibitors adapted to confined spaces, as proposed in this utility model. Figure 3 This utility model provides a cross-sectional structural schematic diagram of an automatic release device for dust explosion inhibitors adapted to confined spaces. Figure 4 This invention proposes an automatic release device for dust explosion inhibitors adapted to confined spaces. Figure 3 Enlarged view of point A in the middle.

[0013] Legend: 1. Support frame; 2. Hopper; 3. PLC controller; 4. Dust concentration detector; 5. Fixing plate; 6. Booster pump; 7. First pipe; 8. Second pipe; 9. Nozzle; 10. Storage tank; 11. Inlet pipe; 12. Fixing sleeve; 13. Gear column; 14. Connecting rod; 15. Connecting plate; 16. Dustproof baffle; 17. Frame; 18. Rotating shaft; 19. Worm gear; 20. Motor; 21. Worm; 22. Limit block. Detailed Implementation

[0014] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0015] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0016] Example: Figures 1-4As shown, this utility model provides a technical solution: an automatic release device for dust explosion inhibitors adapted to confined spaces, including a bracket 1 and a hopper 2. A PLC controller 3 is fixedly installed on one side of the hopper 2, a dust concentration detector 4 is fixedly installed inside one side of the hopper 2, a fixing plate 5 is fixedly installed on one side of the hopper 2, a booster pump 6 is fixedly installed inside the fixing plate 5, a first pipe 7 is fixedly installed at the input end of the booster pump 6, a second pipe 8 is fixedly installed at the output end of the booster pump 6, a nozzle 9 is fixedly installed at the end of the second pipe 8 away from the booster pump 6, a storage box 10 is fixedly installed on the side of the hopper 2 near the fixing plate 5, an inlet pipe 11 is fixedly installed on the top of the storage box 10, a fixing sleeve 12 is fixedly installed on one side of the hopper 2, a toothed column 13 is slidably connected inside the fixing sleeve 12, a connecting rod 14 is fixedly installed on the outer wall of the top of the toothed column 13, and a nozzle 9 is fixedly installed at the end of the connecting rod 14 away from the toothed column 13. A connecting plate 15 is fixedly installed at its bottom end with a dustproof baffle 16. A frame 17 is fixedly installed on the side of the hopper 2 near the fixed sleeve 12. A rotating shaft 18 is rotatably connected inside the frame 17. A worm gear 19 is fixedly installed on the outer wall of the rotating shaft 18. A motor 20 is fixedly installed on the side of the frame 17 away from the hopper 2. A worm 21 is fixedly installed at the output end of the motor 20. The second pipe 8 is fixedly connected to the hopper 2. The first pipe 7 is fixedly connected to the storage box 10. The worm 21 and the worm gear 19 mesh with each other. The worm gear 19 and the toothed column 13 mesh with each other. The connecting plate 15 is slidably connected to the hopper 2. The dustproof baffle 16 is slidably connected to the nozzle 9. The hopper 2 is located inside the support 1. The hopper 2 is fixedly connected to the support 1. A limit block 22 is fixedly installed at the bottom end of the toothed column 13. The dust concentration detector 4, the booster pump 6, and the motor 20 are all electrically connected to the PLC controller 3.

[0017] In this embodiment, the dust concentration detector 4 can monitor the dust concentration in the enclosed space in real time and transmit the data to the PLC controller 3 to achieve early warning of risks and avoid the lag of manual inspection. Secondly, the PLC controller 3 automatically controls the operation of the motor 20 and the booster pump 6 according to the preset threshold. No manual intervention is required, and the response speed is fast. When the dust concentration reaches the dangerous value, the inhibitor release process can be quickly started, which can contain the risk in the early stage of dust explosion. Furthermore, the motor 20 drives the dust baffle 16 to open and close automatically. It can protect the nozzle 9 from dust when it is not working, so as to prevent the nozzle 9 from being blocked and affecting the release effect. It can also be opened quickly when working to ensure that the inhibitor is sprayed out smoothly. At the same time, the booster pump 6 sprays the inhibitor in the storage tank 10 from the nozzle 9 in the form of high pressure through the first pipe 7 and the second pipe 8, which can make the inhibitor diffuse evenly in the enclosed space, with a wide coverage area, and improve the efficiency of suppressing dust explosion.

[0018] The working principle of this embodiment is as follows: In use, firstly, the dust concentration detector 4 (model GCG1000) installed inside the silo 2 collects real-time dust concentration data within the enclosed space and converts the analog signal into a digital signal, transmitting it to the PLC controller 3 (model S7-200 SMART CPU). (SR40 type); The PLC controller 3 has a preset dust explosion hazard threshold. When the received dust concentration data reaches or exceeds this threshold, it immediately triggers a control command. On one hand, it sends a start signal to the motor 20 (model Y2-90S-4). The output of the motor 20 drives the worm 21 to rotate. Since the worm 21 and the worm wheel 19 mesh with each other, the worm wheel 19 rotates with the worm 21 and drives the coaxial rotating shaft 18 to rotate. The worm wheel 19 meshes with the gear column 13, thereby driving the gear column 13 to slide upward in the fixed sleeve 12. The gear column 13 drives the connecting plate 15 to move upward through the connecting rod 14. The dust baffle 16 at the bottom of the connecting plate 15 slides upward, disengaging from the contact state with the nozzle 9 and opening the release channel of the nozzle 9. On the other hand, the PLC controller 3 sends a start signal to the booster pump 6 (model 3). The WZ-8 model sends an operation signal, and the booster pump 6 starts. It then draws dust explosion inhibitor from the storage tank 10 through the first pipe 7 at the input end. After pressurization, the inhibitor is delivered to the nozzle 9 through the second pipe 8 at the output end. The high-pressure inhibitor is sprayed out from the nozzle 9 and spreads rapidly in the confined space, thereby curbing the occurrence or preventing the spread of dust explosion. When the dust concentration detector 4 detects that the dust concentration in the space has dropped below the safety threshold, it sends a signal to the PLC controller 3. The PLC controller 3 then sends a stop command, the booster pump 6 stops running, the motor 20 rotates in reverse, and drives the gear column 13 to slide downward through the worm 21 and worm wheel 19, which drives the dust baffle 16 to reset and re-fit the nozzle 9 to protect the nozzle 9 from dust, thus completing a complete automatic control process.

[0019] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An automatic release device for dust explosion inhibitors adapted to confined spaces, comprising a support frame (1) and a hopper (2), characterized in that: A PLC controller (3) is fixedly installed on one side of the silo (2). A dust concentration detector (4) is fixedly installed inside one side of the silo (2). A fixing plate (5) is fixedly installed on one side of the silo (2). A booster pump (6) is fixedly installed inside the fixing plate (5). A first pipe (7) is fixedly installed at the input end of the booster pump (6). A second pipe (8) is fixedly installed at the output end of the booster pump (6). A nozzle (9) is fixedly installed at the end of the second pipe (8) away from the booster pump (6). A storage box (10) is fixedly installed on the side of the silo (2) near the fixing plate (5). An inlet pipe (11) is fixedly installed on the top of the storage box (10). A fixed installation is installed on one side of the silo (2). There is a fixed sleeve (12), and a toothed column (13) is slidably connected inside the fixed sleeve (12). A connecting rod (14) is fixedly installed on the outer wall of the top end of the toothed column (13). A connecting plate (15) is fixedly installed on the end of the connecting rod (14) away from the toothed column (13). A dustproof baffle (16) is fixedly installed on the bottom end of the connecting plate (15). A frame (17) is fixedly installed on the side of the hopper (2) close to the fixed sleeve (12). A rotating shaft (18) is rotatably connected inside the frame (17). A worm gear (19) is fixedly installed on the outer wall of the rotating shaft (18). A motor (20) is fixedly installed on the side of the frame (17) away from the hopper (2). A worm (21) is fixedly installed on the output end of the motor (20).

2. The automatic release device for dust explosion inhibitors adapted to confined spaces according to claim 1, characterized in that: The second pipe (8) is fixedly connected to the silo (2), and the first pipe (7) is fixedly connected to the storage box (10).

3. The automatic release device for dust explosion inhibitors adapted to confined spaces according to claim 1, characterized in that: The worm (21) meshes with the worm wheel (19), and the worm wheel (19) meshes with the toothed column (13).

4. The automatic release device for dust explosion inhibitors adapted to confined spaces according to claim 1, characterized in that: The connecting plate (15) is slidably connected to the hopper (2), and the dust baffle (16) is slidably connected to the nozzle (9).

5. The automatic release device for dust explosion inhibitors adapted to confined spaces according to claim 1, characterized in that: The hopper (2) is located inside the support (1), and the hopper (2) is fixedly connected to the support (1). A limit block (22) is fixedly installed at the bottom of the toothed column (13).

6. The automatic release device for dust explosion inhibitors adapted to confined spaces according to claim 1, characterized in that: The dust concentration detector (4), booster pump (6) and motor (20) are all electrically connected to the PLC controller (3).

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