High-pressure water mist fire extinguishing device

Abstract

The utility model relates to the technical field of water mist fire extinguishing devices, and discloses a high-pressure water mist fire extinguishing device which comprises a rack, a high-pressure pump set is fixedly mounted on the rack, and a control cabinet is fixedly mounted at the top of the rack; and the switching filtering mechanism is arranged at the water inlet end of the high-pressure pump set, and the switching filtering mechanism is used for automatically switching the filtering structure. Through the design of the ultrasonic flow meter, the flow of water entering the high-pressure pump set can be monitored, when the flow of the water is low, it is indicated that too many impurities are attached to the barrel-shaped filtering piece, and then the first electric valve pipelines corresponding to the barrel-shaped filtering piece are controlled to be closed completely; and then all second electric valve pipelines are opened, water used by the high-pressure pump set is filtered with the help of the other barrel-shaped filtering piece, the water filtering efficiency is guaranteed, the problem that fire extinguishing work is greatly affected due to the fact that the water flow is reduced is solved, and the safety of the structure in use is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of water mist fire extinguishing devices, specifically, to a high-pressure fine water mist fire extinguishing device. Background Technology

[0002] High-pressure fine water mist fire extinguishing devices are devices that use a high-pressure pump to pressurize water to a certain pressure, and then spray it out through specially designed nozzles to produce fine water mist particles with a diameter between 10 and 100 micrometers for fire extinguishing. This fine water mist has a large specific surface area, which can quickly absorb the heat of flames and burning objects, reduce the temperature of the combustion zone, and form water vapor through evaporation, diluting the oxygen in the air, thereby achieving the effect of extinguishing the fire.

[0003] Existing high-pressure fine water mist fire extinguishing devices do not have the function of automatically switching filters. High-pressure fine water mist fire extinguishing devices are designed with a filter structure at the water inlet to filter impurities in the water body to ensure the smooth flow of subsequent pipelines. If the filter structure becomes blocked, the water inlet speed will decrease, which will seriously affect the fire extinguishing work. Utility Model Content

[0004] The purpose of this invention is to provide a high-pressure fine water mist fire extinguishing device that solves the problem that the fire extinguishing work is seriously affected when the filter structure is blocked in the prior art.

[0005] This utility model provides the following technical solution: a high-pressure fine water mist fire extinguishing device, comprising:

[0006] A frame on which a high-pressure pump unit is fixedly installed, and a control cabinet is fixedly installed on the top of the frame;

[0007] A switching filter mechanism is installed at the inlet of the high-pressure pump unit, and the switching filter mechanism is used to automatically switch the filter structure.

[0008] An automatic cleaning mechanism is provided on the filter switching mechanism, and the automatic cleaning mechanism is used to automatically clean the switched filter structure.

[0009] As a preferred embodiment of the above technical solution, the switching filter mechanism includes a three-way pipe one and a three-way pipe two. A receiving pipe is fixedly connected to the back of the three-way pipe one, and an ultrasonic flow meter is installed on the receiving pipe. The back of the receiving pipe is fixedly connected to the water inlet of the high-pressure pump set.

[0010] Through the above technical solution, the inlet water velocity of the high-pressure pump unit can be monitored by designing an ultrasonic flow meter, thereby determining the blockage status of the filter structure.

[0011] As a preferred embodiment of the above technical solution, a No. 1 electric valve pipe is fixedly connected to the left side of both the first and second tee pipes, a No. 2 electric valve pipe is fixedly connected to the right side of both the first and second tee pipes, a filter chamber is fixedly connected to the end of both the first and second electric valve pipes, and a water inlet pipe is fixedly connected to the front of the second tee pipe.

[0012] Through the above technical solution, the cylindrical filter element can be switched by designing the No. 1 electric valve pipeline and the No. 2 electric valve pipeline.

[0013] As a preferred embodiment of the above technical solution, an inner partition is fixedly installed on the inner wall of the filter chamber, and a cylindrical filter element is detachably connected to the filter chamber and the inner partition.

[0014] As a preferred embodiment of the above technical solution, the automatic cleaning mechanism includes a fixed frame, which is fixedly installed on the top of the filter chamber. A fixed connecting pipe is fixedly installed on the inner wall of the fixed frame. A rotary joint is rotatably connected to the bottom of the fixed connecting pipe. An extension pipe is fixedly connected to the bottom of the rotary joint. The bottom of the extension pipe extends into the inner cavity of the cylindrical filter element and is fixedly connected to a connecting pipe. A folded pipe is fixedly connected to the outer wall of the connecting pipe.

[0015] The above technical solution, through the design of the fixed frame, fixed pipe, rotary joint, extension pipe, connecting pipe and folded pipe, facilitates the backwashing of the cylindrical filter element with the help of an external clean water pump.

[0016] As a preferred embodiment of the above technical solution, a fixing strip is fixedly installed on the side of the filter chamber, an electric cylinder is fixedly installed on the top of the fixing strip, and the telescopic end of the electric cylinder extends to the bottom of the fixing strip and is fixedly connected to a connecting frame.

[0017] The above technical solution, through the design of the electric cylinder, can drive the strip cover to move down, making it easier to discharge cleaning wastewater.

[0018] As a preferred embodiment of the above technical solution, a strip cover is fixedly installed on the side of the connecting frame, the strip cover is movably inserted into the bottom of the filter chamber, and a slide rod is fixedly connected to the top of the connecting frame, the outer wall of the slide rod being slidably connected to the inner wall of the fixed strip seat.

[0019] The above technical solution, through the design of the slide bar, can increase the stability of the strip cover's movement.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This invention utilizes an ultrasonic flow meter to monitor the flow rate of water entering the high-pressure pump unit. A low flow rate indicates excessive impurities on the cylindrical filter element. Subsequently, all corresponding electric valves on the pipeline to the cylindrical filter element are closed, while all secondary electric valves are opened. Another cylindrical filter element is then used to filter the water used by the high-pressure pump unit, ensuring filtration efficiency and preventing a significant impact on firefighting operations due to reduced water flow. This increases the safety of the design. Furthermore, the automatic cleaning mechanism automatically cleans the switched-out cylindrical filter element, ensuring its effectiveness during the next switchover. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the switching filter mechanism and the automatic cleaning mechanism of this utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of the filter chamber of this utility model;

[0025] Figure 4 This is a schematic diagram of the bottom structure of the filter chamber of this utility model;

[0026] Figure 5 This is a schematic diagram of the folded tube structure of this utility model.

[0027] In the diagram: 1. Frame; 11. High-pressure pump set; 12. Control cabinet; 2. Filter switching mechanism; 21. Connecting pipe; 22. Ultrasonic flow meter; 23. T-pipe one; 24. T-pipe two; 25. Electric valve No. 1 pipe; 26. Electric valve No. 2 pipe; 27. Inlet pipe; 28. Filter chamber; 281. Inner partition; 282. Cylindrical filter element; 3. Automatic cleaning mechanism; 31. Fixing frame; 311. Fixing connecting pipe; 312. Rotary joint; 313. Extension pipe; 314. Connecting pipe; 315. Bending pipe; 32. Strip cover; 33. Fixing strip seat; 34. Electric cylinder; 35. Connecting frame; 36. Slide rod. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0029] like Figures 1-5 As shown, this utility model provides a technical solution: a high-pressure fine water mist fire extinguishing device, comprising:

[0030] A frame 1 is provided, on which a high-pressure pump unit 11 is fixedly installed, and on the top of the frame 1 is a control cabinet 12.

[0031] The filter switching mechanism 2 is located at the inlet of the high-pressure pump group 11 and is used to automatically switch the filter structure.

[0032] Automatic cleaning mechanism 3 is installed on the switching filter mechanism 2 and is used to automatically clean the switched filter structure.

[0033] As one implementation method in this embodiment, such as Figure 1 , Figure 2 , Figure 3 As shown, the switching filter mechanism 2 includes a three-way pipe 1 23 and a three-way pipe 24. A receiving pipe 21 is fixedly connected to the back of the three-way pipe 1 23, and an ultrasonic flow meter 22 is installed on the receiving pipe 21. The back of the receiving pipe 21 is fixedly connected to the inlet end of the high-pressure pump unit 11. A first electric valve pipe 25 is fixedly connected to the left side of both the three-way pipe 1 23 and the three-way pipe 24, and a second electric valve pipe 26 is fixedly connected to the right side of both the three-way pipe 1 23 and the three-way pipe 24. Filter chambers 28 are fixedly connected to the ends of both the first electric valve pipe 25 and the second electric valve pipe 26. An inlet pipe 27 is fixedly connected to the front of the three-way pipe 24. Initially, the first electric valve pipe 25 is open and the second electric valve pipe 26 is closed. When the high-pressure pump unit 11 is running, water can flow from the inlet pipe 27, the three-way pipe 24, the first electric valve pipe 25, the left filter chamber 28, the three-way pipe 1 23, and the receiving pipe 21. Water is drawn from the inside for firefighting. During this process, the water is filtered through the left-side cylindrical filter element 282. As the impurities on the surface of the cylindrical filter element 282 increase, the flow rate of the water entering the high-pressure pump unit 11 is monitored by the ultrasonic flow meter 22. The ultrasonic flow meter 22 is a non-contact instrument that uses the propagation characteristics of ultrasound in fluids to measure flow velocity or flow rate. When the water flow rate is lower than the preset value, it indicates that there are too many impurities on the cylindrical filter element 282, which is now blocked. The system then controls the first electric valve pipe 25 to close and the second electric valve pipe 26 to open, allowing the water to flow through the inner cavity of another filter chamber 28 and be filtered through another cylindrical filter element 282. Once this cylindrical filter element 282 becomes blocked, the system switches to the previous cylindrical filter element 282 to ensure the speed of water supply, maintain the firefighting effect, and increase safety.

[0034] As one implementation method in this embodiment, such as Figure 3 , Figure 4As shown, an inner partition 281 is fixedly installed on the inner wall of the filter chamber 28. A cylindrical filter element 282 is detachably connected to the filter chamber 28 and the inner partition 281. The cylindrical filter element 282 consists of a circular base plate and a filter cartridge. The circular base plate is installed at the bottom of the filter chamber 28 by bolts. The outer wall of the filter cartridge is movably connected to the inner wall of the inner partition 281. With this design, the user can replace the damaged cylindrical filter element 282.

[0035] As one implementation method in this embodiment, such as Figure 4 , Figure 5 As shown, the automatic cleaning mechanism 3 includes a fixed frame 31, which is fixedly installed on the top of the filter chamber 28. A fixed connecting pipe 311 is fixedly installed on the inner wall of the fixed frame 31. A rotary joint 312 is rotatably connected to the bottom of the fixed connecting pipe 311. An extension pipe 313 is fixedly connected to the bottom of the rotary joint 312. The bottom of the extension pipe 313 extends into the inner cavity of the cylindrical filter element 282 and is fixedly connected to a connecting pipe 314. A folded pipe 315 is fixedly connected to the outer wall of the connecting pipe 314. A fixing strip seat 33 is fixedly installed on the side of the filter chamber 28. An electric cylinder 34 is fixedly installed on the top of the fixing strip seat 33. The telescopic end of the electric cylinder 34 extends to the bottom of the fixing strip seat 33 and is fixedly connected to a connecting frame 35. A strip-shaped cover 32 is fixedly installed on the side of the connecting frame 35. The strip-shaped cover 32 is movably inserted into the bottom of the filter chamber 28. A sliding rod 36 is fixedly connected to the top of the connecting frame 35. The outer wall of the sliding rod 36 is slidably connected to the inner wall of the fixing strip seat 33. After switching the cylindrical filter element 282, it automatically... The automatic cleaning mechanism 3 can automatically clean the switched-out cylindrical filter element 282. First, the electric cylinder 34 is extended, and the connecting frame 35 drives the strip cover 32 to move downward, causing the strip groove at the bottom of the filter chamber 28 to open. Before use, the output end of the external clean water pump is connected to the top of the fixed pipe 311. Then, the external clean water pump is controlled to work. It can pass through the fixed pipe 311, the rotary joint 312, the extension pipe 313, the connecting pipe 314, and the folded pipe. Water is supplied to the inner cavity of the cylindrical filter element 282 by 315. The water is used to backwash the cylindrical filter element 282. After the backwashing is completed, the external water pump is turned off, and the electric cylinder 34 is reset. The design of the rotary joint 312 makes the folded pipe 315 rotatably connected to the fixed pipe 311 and the inner cavity is connected. When water is sprayed at the folded pipe 315, the reaction force of the water spray can drive the folded pipe 315 to rotate, thereby improving the backwashing effect of the cylindrical filter element 282.

[0036] Working principle: Before use, connect the output end of the external clean water pump to the top of the fixed pipe 311, connect the water source pipe to the inlet pipe 27, then connect the nozzle pipe to the output end of the high-pressure pump set 11, and connect the high-pressure pump set 11, ultrasonic flow meter 22, No. 1 electric valve pipe 25, No. 2 electric valve pipe 26, electric cylinder 34, and external clean water pump to the control cabinet 12 for control. During use, control the high-pressure pump set 11 to operate, and water can be drawn from the inlet pipe 27, T-junction pipe 24, No. 1 electric valve pipe 25, left filter chamber 28, T-junction pipe 23, and receiving pipe 21 for fire extinguishing. At this time, the water is filtered through the left cylindrical filter element 282. The ultrasonic flow meter 22 monitors the flow rate of the water entering the high-pressure pump set 11. If the water flow rate is lower than the preset value, it indicates that impurities are attached to the cylindrical filter element 282. If the filter becomes clogged, the system immediately closes the first electric valve pipe 25 and opens the second electric valve pipe 26, allowing water to flow through the inner cavity of another filter chamber 28 and be filtered by another cylindrical filter element 282. Once this cylindrical filter element 282 becomes clogged, the system switches to the previous cylindrical filter element 282. After switching out, the cylindrical filter element 282 is immediately cleaned by the automatic cleaning mechanism 3. First, the electric cylinder 34 is extended, causing the strip cover 32 to move downward, opening the strip groove at the bottom of the filter chamber 28. Then, the external clean water pump is activated, delivering clean water through the fixed pipe 311, rotary joint 312, extension pipe 313, connecting pipe 314, and bend pipe 315 into the inner cavity of the cylindrical filter element 282. The clean water is used to backwash the cylindrical filter element 282. After rinsing, the external clean water pump is turned off, and the electric cylinder 34 is reset.

[0037] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A high-pressure fine water mist fire extinguishing device, characterized in that, include: A frame (1) is fixedly installed on the frame (1), and a control cabinet (12) is fixedly installed on the top of the frame (1). The switching filter mechanism (2) is located at the inlet of the high-pressure pump group (11) and is used to automatically switch the filter structure. Automatic cleaning mechanism (3) is installed on the switching filter mechanism (2) and is used to automatically clean the switched filter structure.

2. The high-pressure fine water mist fire extinguishing device according to claim 1, characterized in that: The switching filter mechanism (2) includes a three-way pipe one (23) and a three-way pipe two (24). A receiving pipe (21) is fixedly connected to the back of the three-way pipe one (23). An ultrasonic flow meter (22) is installed on the receiving pipe (21). The back of the receiving pipe (21) is fixedly connected to the water inlet of the high-pressure pump group (11).

3. The high-pressure fine water mist fire extinguishing device according to claim 2, characterized in that: The left side of each of the three-way pipes (23) and (24) is fixedly connected to a first electric valve pipe (25), the right side of each of the three-way pipes (23) and (24) is fixedly connected to a second electric valve pipe (26), the ends of each of the first electric valve pipe (25) and the second electric valve pipe (26) are fixedly connected to a filter chamber (28), and the front of the three-way pipe (24) is fixedly connected to a water inlet pipe (27).

4. The high-pressure fine water mist fire extinguishing device according to claim 3, characterized in that: An inner partition (281) is fixedly installed on the inner wall of the filter chamber (28), and a cylindrical filter element (282) is detachably connected to the filter chamber (28) and the inner partition (281).

5. A high-pressure fine water mist fire extinguishing device according to claim 4, characterized in that: The automatic cleaning mechanism (3) includes a fixed frame (31), which is fixedly installed on the top of the filter chamber (28). A fixed pipe (311) is fixedly installed on the inner wall of the fixed frame (31). A rotary joint (312) is rotatably connected to the bottom of the fixed pipe (311). An extension pipe (313) is fixedly connected to the bottom of the rotary joint (312). The bottom of the extension pipe (313) extends into the inner cavity of the cylindrical filter element (282) and is fixedly connected to a connecting pipe (314). A folded pipe (315) is fixedly connected to the outer wall of the connecting pipe (314).

6. A high-pressure fine water mist fire extinguishing device according to claim 5, characterized in that: A fixing strip seat (33) is fixedly installed on the side of the filter chamber (28), and an electric cylinder (34) is fixedly installed on the top of the fixing strip seat (33). The telescopic end of the electric cylinder (34) extends to the bottom of the fixing strip seat (33) and is fixedly connected to a connecting frame (35).

7. A high-pressure fine water mist fire extinguishing device according to claim 6, characterized in that: A strip cover (32) is fixedly installed on the side of the connecting frame (35). The strip cover (32) is movably inserted into the bottom of the filter chamber (28). A slide rod (36) is fixedly connected to the top of the connecting frame (35). The outer wall of the slide rod (36) is slidably connected to the inner wall of the fixed strip seat (33).

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