Automatic filling device of dry powder extinguisher

Abstract

The utility model discloses an automatic filling device of a dry powder extinguisher. The automatic filling device comprises a filling workbench, a clamping mechanism, a knocking mechanism and a dry powder extinguisher filling tank, according to the automatic filling device of the dry powder fire extinguisher, a clamping mechanism is arranged on a filling workbench, a knocking mechanism is arranged on the portion, corresponding to the lower portion of the clamping mechanism, of the filling workbench, a dry powder fire extinguisher filling tank is clamped in the clamping mechanism, the knocking mechanism comprises a knocking hammer, the knocking hammer corresponds to the bottom face of a base plate, and a shaft rod of the knocking hammer is slidably sleeved with a guide sleeve; the filling pressure and time are monitored through the PLC, whether a siphon in the fire extinguisher is blocked or not is judged according to the time from filling to the filling pressure, and the knocking mechanism is matched with the clamping mechanism to knock and vibrate the filling tank of the dry powder fire extinguisher, so that blockage repair is carried out, manual judgment and knocking are not needed, and the working efficiency is improved. The use of manpower is reduced, and the processing efficiency is effectively improved.

Description

An automatic filling device for dry powder fire extinguishers Technical Field

[0001] This utility model relates to the field of dry powder fire extinguisher filling technology, specifically an automatic filling device for dry powder fire extinguishers. Background Technology

[0002] Dry powder fire extinguishers are a type of fire extinguisher suitable for extinguishing initial fires involving flammable and combustible liquids, gases, and energized electrical equipment. The dry powder extinguishing agent inside is a dry, free-flowing, finely ground solid powder. This powder is made from inorganic salts with extinguishing properties (such as sodium bicarbonate, modified sodium salts, potassium salts, ammonium dihydrogen phosphate, and diammonium hydrogen phosphate) as a base, with small amounts of moisture-proofing agents, flow promoters, and anti-caking agents added, through drying, pulverizing, and mixing. Dry powder fire extinguishers are primarily used to extinguish initial fires involving flammable liquids and gases such as petroleum and organic solvents, and can also be used to extinguish general fires.

[0003] Currently, the manufacturing process for dry powder fire extinguishers involves filling the extinguisher with powder, installing and tightening the head and siphon tube, and then filling with nitrogen. However, during nitrogen filling, it has been observed that a significant amount of dry powder clogs the siphon tube, preventing normal filling. This necessitates manually tapping the extinguisher canister to loosen the dry powder, and the entire process requires manual monitoring of the pressure gauge and manual operation of the filling valve.

[0004] Another process involves pre-vibrating the fire extinguisher after tightening the nozzle, followed by automatic filling. However, this method cannot determine whether subsequent fire extinguishers still have blocked siphon tubes causing abnormal nitrogen filling; manual inspection of the product is still required.

[0005] Both of the above technologies require a lot of manual intervention, which affects processing efficiency. Therefore, an automatic filling device for dry powder fire extinguishers is proposed to optimize the existing technologies. Summary of the Invention

[0006] The purpose of this invention is to provide an automatic filling device for dry powder fire extinguishers, reducing human intervention in product quality. During the filling process, it can automatically resolve issues such as dry powder clogging the siphon tube, leading to abnormal filling and undetected problems, and makes a final product quality judgment. This improves production efficiency and product quality, thus solving the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An automatic filling device for dry powder fire extinguishers includes a filling workbench, a clamping mechanism on the filling workbench, and a striking mechanism below the clamping mechanism on the filling workbench. The clamping mechanism holds a dry powder fire extinguisher filling container.

[0009] As a further embodiment of this utility model: the clamping mechanism includes a base plate, and four springs are symmetrically arranged on the bottom surface of the base plate. A connecting sleeve is fixedly connected to each end of the spring, and the spring is fixedly connected to the base plate and the filling worktable through the connecting sleeve.

[0010] As a further embodiment of this utility model: the clamping mechanism further includes symmetrically arranged clamping seats, with clamping rollers symmetrically rotatably mounted on opposite sides of the clamping seats. The clamping seats are symmetrically arranged on both sides of the dry powder fire extinguisher filling can, which is mounted on the base plate. One side of the clamping seat is fixedly connected to the base plate via a connecting block, while the other side of the clamping seat is fixedly installed on the telescopic end of the three-axis cylinder. The three-axis cylinder is fixedly connected to the base plate via a support seat.

[0011] As a further embodiment of this utility model: the striking mechanism includes a striking hammer, which corresponds to the bottom surface of the substrate. A guide sleeve is slidably sleeved on the shaft of the striking hammer, and the guide sleeve is fixedly and throughly connected to the filling worktable.

[0012] As a further embodiment of this utility model: the striking mechanism also includes a U-shaped fastener, which is disposed at the bottom of the striking hammer and fixedly connected to the bottom surface of the filling workbench. A turntable is symmetrically rotatably connected to the inner side of the U-shaped fastener, and a lever is fixedly connected to the eccentric part of the turntable. A lever groove is fixedly connected to the bottom of the striking hammer, and the lever moves through the lever groove and is adapted to the lever groove. The diameter of the lever is equal to the width of the lever groove. A rotary cylinder is fixedly installed on the side of the U-shaped fastener, and the rotating shaft of the rotary cylinder is fixedly connected to the turntable.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention uses a PLC to monitor the filling pressure and time. It determines whether the siphon tube inside the fire extinguisher is blocked by the time it takes to reach the filling pressure. The dry powder fire extinguisher filling tank 4 is then tapped and vibrated by the tapping mechanism 3 and the clamping mechanism 2 to repair the blockage. This eliminates the need for manual judgment and tapping, reducing manpower and effectively improving processing efficiency. Attached Figure Description

[0015] Figure 1 is a schematic diagram of an automatic filling device for a dry powder fire extinguisher.

[0016] Figure 2 is a top-view perspective view of an automatic filling device for a dry powder fire extinguisher.

[0017] Figure 3 is a cross-sectional view of an automatic filling device for a dry powder fire extinguisher.

[0018] Figure 4 is a flowchart of a method for an automatic filling device for a dry powder fire extinguisher.

[0019] In the diagram: 1. Filling workbench; 2. Clamping mechanism; 3. Striking mechanism; 4. Dry powder fire extinguisher filling tank; 5. Base plate; 6. Spring; 7. Clamping seat; 8. Clamping roller; 9. Three-axis cylinder; 10. Striking hammer; 11. Guide sleeve; 12. U-shaped fastener; 13. Turntable; 14. Rotary cylinder; 15. Actuating rod; 16. Actuating groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please refer to Figures 1 to 4. In this embodiment of the utility model, a filling workbench 1 is included. A clamping mechanism 2 is provided on the filling workbench 1. A striking mechanism 3 is provided below the clamping mechanism 2 on the filling workbench 1. A dry powder fire extinguisher filling can 4 is clamped inside the clamping mechanism 2.

[0022] The clamping mechanism 2 includes a base plate 5. Four springs 6 are symmetrically arranged on the bottom surface of the base plate 5. A connecting sleeve is fixedly connected to each end of the spring 6. The spring 6 is fixedly connected to the base plate 5 and the filling worktable 1 through the connecting sleeve.

[0023] The clamping mechanism 2 also includes symmetrically arranged clamping seats 7. Clamping rollers 8 are symmetrically rotatably mounted on opposite sides of the clamping seats 7. The clamping seats 7 are symmetrically arranged on both sides of the dry powder fire extinguisher filling tank 4. The dry powder fire extinguisher filling tank 4 is mounted on the base plate 5. One side of the clamping seat 7 is fixedly connected to the base plate 5 through a connecting block, while the other side of the clamping seat 7 is fixedly installed on the telescopic end of the three-axis cylinder 9. The three-axis cylinder 9 is fixedly connected to the base plate 5 through a support seat.

[0024] The striking mechanism 3 includes a striking hammer 10, which corresponds to the bottom surface of the substrate 5. A guide sleeve 11 is slidably sleeved on the shaft of the striking hammer 10, and the guide sleeve 11 is fixedly connected to the filling worktable 1.

[0025] The striking mechanism 3 also includes a U-shaped fastener 12, which is located at the bottom of the striking hammer 10 and is fixedly connected to the bottom surface of the filling workbench 1. A turntable 13 is symmetrically rotatably connected to the inner side of the U-shaped fastener 12. A lever 15 is fixedly connected to the eccentric part of the turntable 13. A lever groove 16 is fixedly connected to the bottom of the striking hammer 10. The lever 15 moves through the lever groove 16 and is adapted to the lever groove 16. The diameter of the lever 15 is equal to the width of the lever groove 16. A rotary cylinder 14 is fixedly installed on the side of the U-shaped fastener 12. The rotation shaft of the rotary cylinder 14 is fixedly connected to the turntable 13.

[0026] Example 1:

[0027] Taking nitrogen filling as an example, the dry powder fire extinguisher filling can 4 is placed on the base plate 5. The three-axis cylinder 9 is extended by the PLC controller. At this time, the yellow alarm light is lit. The extension end of the three-axis cylinder 9 drives the clamping seat 7 connected to it to move closer to another clamping seat 7. The two clamping seats 7 clamp the dry powder fire extinguisher filling can 4 through the clamping roller 8. The filling port is connected to the filling port of the dry powder fire extinguisher filling can 4, and nitrogen is pneumatically filled in. During filling, the PLC controller monitors the filling pressure through the pressure monitoring sensor. At the same time, the PLC controller records the filling time. When the filling pressure reaches the standard and the filling time is 5 seconds, the filling is completed. At this time, the green alarm light is lit.

[0028] Example 2:

[0029] Taking nitrogen filling as an example, the dry powder fire extinguisher canister 4 is placed on the base plate 5. The PLC controller controls the extension of the three-axis cylinder 9. At this time, the yellow alarm light illuminates. The extension end of the three-axis cylinder 9 drives the clamping seat 7 connected to it to move closer to another clamping seat 7. The two clamping seats 7 clamp the dry powder fire extinguisher canister 4 through the clamping roller 8. The filling port is connected to the filling port of the dry powder fire extinguisher canister 4, and nitrogen is pneumatically filled in. During filling, the PLC controller monitors the filling pressure through the pressure monitoring sensor. At the same time, the PLC controller records the filling time. If the filling pressure is up to standard and the filling time is 1-2 seconds, the PLC controller judges that the filling is abnormal. The siphon tube inside the dry powder fire extinguisher canister 4 is blocked by dry powder, and the count X=1. The PLC controller... After the device detects an inflation abnormality, the PLC controller further controls the rotary cylinder 14 to operate. The rotary cylinder 14 drives the turntable 13 to rotate, and the turntable 13 drives the actuating rod 15 to move in a circular motion. The actuating rod 15 pushes the hammer 10 and the guide sleeve 11 to reciprocate through the actuating groove 16. The hammer 10 strikes the base plate 5, and the base plate 5 vibrates due to the elastic support of the spring 6, thereby breaking up the dry powder in the dry powder fire extinguisher filling tank 4. After the dry powder is released, the pressure will drop suddenly. At this time, inflation continues. During inflation, the PLC controller monitors the inflation pressure through the pressure monitoring sensor. At the same time, the PLC controller records the inflation time. When the inflation pressure reaches the standard and the inflation time is 5 seconds, inflation is complete. At this time, the green alarm light illuminates.

[0030] Example 3:

[0031] Taking nitrogen filling as an example, the dry powder fire extinguisher canister 4 is placed on the base plate 5. The PLC controller controls the extension of the three-axis cylinder 9. At this time, the yellow alarm light illuminates. The extension and retraction end of the three-axis cylinder 9 drives the clamping seat 7 connected to it to move closer to another clamping seat 7. The two clamping seats 7 clamp the dry powder fire extinguisher canister 4 through the clamping roller 8. The filling port is connected to the filling port of the dry powder fire extinguisher canister 4, and nitrogen is pneumatically filled in. During filling, the PLC controller monitors the filling pressure through the pressure monitoring sensor. At the same time, the PLC controller records the filling time and filling pressure. If the inflation time is 1-2 seconds and the pressure is within the acceptable range, the PLC controller will detect an inflation abnormality. The siphon tube inside the dry powder fire extinguisher filling tank 4 is blocked by dry powder, and the count X = 1. After detecting the inflation abnormality, the PLC controller will further control the rotary cylinder 14. The rotary cylinder 14 drives the turntable 13 to rotate, which in turn drives the actuating rod 15 to move in a circular motion. The actuating rod 15 pushes the hammer 10 and the guide sleeve 11 to reciprocate through the actuating groove 16. The hammer 10 strikes the base plate 5, and the base plate 5 vibrates due to the elastic support of the spring 6, thereby... The dry powder in the dry powder fire extinguisher filling tank 4 is broken up. At this point, inflation continues. During inflation, the PLC controller monitors the inflation pressure via a pressure monitoring sensor and records the inflation time. If the inflation pressure is within the acceptable range and the inflation time is 1-2 seconds, the PLC controller determines an inflation abnormality. The siphon tube inside the dry powder fire extinguisher filling tank 4 is still blocked by dry powder, and the count X = 2. After determining an inflation abnormality, the PLC controller further controls the rotary cylinder 14 to operate. The rotary cylinder 14 drives the turntable 13 to rotate, which in turn drives... The toggle lever 15 rotates in a circular motion. The toggle lever 15 pushes the hammer 10 and the guide sleeve 11 to reciprocate through the toggle groove 16. The hammer 10 strikes the base plate 5. The base plate 5 vibrates due to the elastic support of the spring 6, which causes the dry powder in the dry powder fire extinguisher filling tank 4 to be broken up. After the dry powder is released, the pressure will drop suddenly. At this time, inflation continues. During inflation, the PLC controller monitors the inflation pressure through the pressure monitoring sensor. At the same time, the PLC controller records the inflation time. When the inflation pressure reaches the standard and the inflation time is 5 seconds, inflation is complete. At this time, the green alarm light illuminates.

[0032] Example 4:

[0033] Taking nitrogen filling as an example, the dry powder fire extinguisher canister 4 is placed on the base plate 5. The PLC controller controls the extension of the three-axis cylinder 9. At this time, the yellow alarm light illuminates. The extension end of the three-axis cylinder 9 drives the clamping seat 7 connected to it to move closer to another clamping seat 7. The two clamping seats 7 clamp the dry powder fire extinguisher canister 4 through the clamping roller 8. The filling port is connected to the filling port of the dry powder fire extinguisher canister 4, and nitrogen is pneumatically filled in. During filling, the PLC controller monitors the filling pressure through the pressure monitoring sensor. At the same time, the PLC controller records the filling time. If the filling pressure is up to standard and the filling time is 1-2 seconds, the PLC controller judges that the filling is abnormal. The siphon tube inside the dry powder fire extinguisher canister 4 is blocked by dry powder, and the count X=1. The PLC controller judges that the filling is abnormal. After the anomaly occurs, the PLC controller further controls the operation of the rotary cylinder 14. The rotary cylinder 14 drives the turntable 13 to rotate, which in turn drives the actuating rod 15 to rotate. The actuating rod 15 pushes the hammer 10 and the guide sleeve 11 to reciprocate through the actuating groove 16. The hammer 10 strikes the base plate 5, and the base plate 5 vibrates due to the elastic support of the spring 6, thereby breaking up the dry powder in the dry powder fire extinguisher filling tank 4. At this time, inflation continues. During inflation, the PLC controller monitors the inflation pressure through the pressure monitoring sensor and records the inflation time. If the inflation pressure is up to standard and the inflation time is 1-2 seconds, the PLC controller determines that the inflation is abnormal. The siphon tube in the dry powder fire extinguisher filling tank 4 is still blocked by dry powder, and the count X is recorded. =2. After the PLC controller detects an inflation abnormality, it further controls the rotary cylinder 14 to operate. The rotary cylinder 14 drives the turntable 13 to rotate, which in turn drives the actuating rod 15 to move in a circular motion. The actuating rod 15 pushes the hammer 10 and the guide sleeve 11 to reciprocate through the actuating groove 16. The hammer 10 strikes the base plate 5, and the base plate 5 vibrates due to the elastic support of the spring 6, thereby breaking up the dry powder in the dry powder fire extinguisher filling tank 4. During inflation, the PLC controller monitors the inflation pressure through the pressure monitoring sensor and records the inflation time. If the inflation pressure meets the standard and the inflation time is 1-2 seconds, the PLC controller detects an inflation abnormality. The siphon tube in the dry powder fire extinguisher filling tank 4 is still filled with dry powder. When powder blockage occurs and the count X=3, the PLC controller determines that the inflation is abnormal. The PLC controller then further controls the rotary cylinder 14, which drives the turntable 13 to rotate. The turntable 13 drives the actuating rod 15 in a circular motion. The actuating rod 15 pushes the striking hammer 10 through the actuating groove 16, causing the guide sleeve 11 to reciprocate. The striking hammer 10 strikes the base plate 5, which vibrates due to the elastic support of the spring 6. This causes the dry powder in the dry powder fire extinguisher filling tank 4 to be broken up. After the dry powder is released, the pressure drops suddenly. Inflation continues. During inflation, the PLC controller monitors the inflation pressure through a pressure monitoring sensor and records the inflation time. When the inflation pressure reaches the target and the inflation time is 5 seconds, inflation is complete.At this moment, the alarm light turns green.

[0034] Example 5:

[0035] Taking nitrogen filling as an example, the dry powder fire extinguisher canister 4 is placed on the base plate 5. The PLC controller controls the extension of the three-axis cylinder 9. At this time, the yellow alarm light illuminates. The extension end of the three-axis cylinder 9 drives the clamping seat 7 connected to it to move closer to another clamping seat 7. The two clamping seats 7 clamp the dry powder fire extinguisher canister 4 through the clamping roller 8. The filling port is connected to the filling port of the dry powder fire extinguisher canister 4, and nitrogen is pneumatically filled in. During filling, the PLC controller monitors the filling pressure through the pressure monitoring sensor. At the same time, the PLC controller records the filling time. If the filling pressure is up to standard and the filling time is 1-2 seconds, the PLC controller judges that the filling is abnormal. The siphon tube inside the dry powder fire extinguisher canister 4 is blocked by dry powder, and the count X=1. The PLC controller judges that the filling is abnormal. After an abnormal gas flow, the PLC controller further controls the rotary cylinder 14. The rotary cylinder 14 drives the turntable 13 to rotate, which in turn drives the actuating rod 15 to rotate. The actuating rod 15 pushes the hammer 10 and the guide sleeve 11 to reciprocate through the actuating groove 16. The hammer 10 strikes the base plate 5, which vibrates due to the elastic support of the spring 6, thus breaking up the dry powder in the dry powder fire extinguisher filling tank 4. At this time, inflation continues. During inflation, the PLC controller monitors the inflation pressure through the pressure monitoring sensor and records the inflation time. If the inflation pressure is within the acceptable range and the inflation time is 1-2 seconds, the PLC controller determines that an inflation abnormality has occurred. The siphon tube in the dry powder fire extinguisher filling tank 4 is still blocked by dry powder. When X=2, the PLC controller determines an inflation abnormality and further controls the rotary cylinder 14. The rotary cylinder 14 drives the turntable 13 to rotate, which in turn drives the actuating rod 15 in a circular motion. The actuating rod 15 pushes the hammer 10 and its guide sleeve 11 to reciprocate through the actuating groove 16. The hammer 10 strikes the base plate 5, causing it to vibrate due to the elastic support of the spring 6. This disperses the dry powder in the dry powder fire extinguisher filling tank 4. During inflation, the PLC controller monitors the inflation pressure using a pressure monitoring sensor and records the inflation time. If the inflation pressure is within the acceptable range and the inflation time is 1-2 seconds, the PLC controller determines an inflation abnormality. The siphon tube inside the dry powder fire extinguisher filling tank 4 remains open. When the extinguisher is clogged with dry powder, and the count X=3, the PLC controller determines that the inflation is abnormal. The PLC controller then further controls the rotary cylinder 14, which drives the turntable 13 to rotate. The turntable 13 drives the actuating rod 15 in a circular motion. The actuating rod 15 pushes the striking hammer 10 through the actuating groove 16, causing the guide sleeve 11 to reciprocate. The striking hammer 10 strikes the base plate 5, which vibrates due to the elastic support of the spring 6. This causes the dry powder in the dry powder extinguisher filling tank 4 to be broken up. After the dry powder is released, the pressure drops suddenly. Inflation continues. During inflation, the PLC controller monitors the inflation pressure through a pressure monitoring sensor and records the inflation time. If the inflation pressure reaches the target, the inflation time is 1-2 seconds.The PLC controller detects an abnormality in the filling process. The siphon tube inside the dry powder fire extinguisher filling tank 4 is still blocked by dry powder, and the counter X=4. At this point, the red light illuminates, indicating an abnormality in the dry powder fire extinguisher filling tank 4.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic filling device for dry powder fire extinguishers, comprising a filling workbench (1), characterized in that: The filling workbench (1) is provided with a clamping mechanism (2), and a striking mechanism (3) is provided below the clamping mechanism (2) on the filling workbench (1). The clamping mechanism (2) holds a dry powder fire extinguisher filling tank (4).

2. The automatic filling device for a dry powder fire extinguisher according to claim 1, characterized in that: The clamping mechanism (2) includes a base plate (5), and four springs (6) are symmetrically arranged on the bottom surface of the base plate (5). A connecting sleeve is fixedly connected to each end of the spring (6), and the spring (6) is fixedly connected to the base plate (5) and the filling worktable (1) through the connecting sleeve.

3. The automatic filling device for a dry powder fire extinguisher according to claim 2, characterized in that: The clamping mechanism (2) further includes symmetrically arranged clamping seats (7), with clamping rollers (8) symmetrically rotatably mounted on opposite sides of the clamping seats (7). The clamping seats (7) are symmetrically arranged on both sides of the dry powder fire extinguisher filling tank (4), which is mounted on the base plate (5). One side of the clamping seat (7) is fixedly connected to the base plate (5) via a connecting block, while the other side of the clamping seat (7) is fixedly installed on the telescopic end of the three-axis cylinder (9), which is fixedly connected to the base plate (5) via a support seat.

4. The automatic filling device for a dry powder fire extinguisher according to claim 1, characterized in that: The striking mechanism (3) includes a striking hammer (10), which corresponds to the bottom surface of the substrate (5). A guide sleeve (11) is slidably sleeved on the shaft of the striking hammer (10), and the guide sleeve (11) is fixedly connected to the filling worktable (1).

5. An automatic filling device for a dry powder fire extinguisher according to claim 4, wherein: The striking mechanism (3) also includes a U-shaped fastener (12), which is set at the bottom of the striking hammer (10) and fixedly connected to the bottom surface of the filling workbench (1). A turntable (13) is symmetrically rotatably connected to the inner side of the U-shaped fastener (12). A lever (15) is fixedly connected to the eccentric part of the turntable (13). A lever groove (16) is fixedly connected to the bottom of the striking hammer (10). The lever (15) moves through the lever groove (16) and is adapted to the lever groove (16). A rotary cylinder (14) is fixedly installed on the side of the U-shaped fastener (12). The rotation shaft of the rotary cylinder (14) is fixedly connected to the turntable (13).

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