Bag type dust collector with automatic fire extinguishing function

Abstract

The utility model relates to the technical field of bag-type dust removers, in particular to a bag-type dust remover with an automatic fire extinguishing function, which comprises a dust removal tower, and a gas purification chamber, a filter element, a bag chamber and a dust hopper which are arranged in the dust removal tower from top to bottom, the fire extinguishing mechanism comprises a spraying pipe, a nozzle, a safety device, a conveying pipe, an execution valve, a temperature sensor and a fire extinguishing medium bin, the spraying pipe is arranged at the upper end of the dust removal tower and is in pipeline connection with the safety device, the other side of the safety device is in pipeline connection with the conveying pipe, and the other end of the conveying pipe is in pipeline connection with the execution valve; the execution valve is connected with the fire extinguishing medium bin through a pipeline, and the nozzle and the spraying pipe are arranged in a penetrating mode. The bag type dust collector is simple in structure and low in manufacturing cost, and can quickly extinguish fire inside the bag type dust collector on the premise that the occupied area of the bag type dust collector is not increased basically.

Description

Technical Field

[0001] The utility model relates to the technical field of bag dust collectors, in particular to a bag dust collector with an automatic fire extinguishing function. Background Art

[0002] A bag dust collector is generally composed of an air inlet duct, an ash hopper, a bag chamber, a filter element, a clean air chamber, an air outlet duct and an ash cleaning system. The air inlet duct, the ash hopper, the bag chamber, the clean air chamber and the air outlet duct form a relatively closed system. The filter element, as the core component of the system, is placed inside the closed system to filter and separate the particulate matter-containing gas flowing into the closed body. Its main body is a relatively sealed system. Once a fire occurs inside, even if there are fire-fighting measures outside, gaseous, solid or liquid fire extinguishing agents cannot enter the bag dust collector and cannot eliminate the fire inside the bag dust collector. The internal fire will spread to the adjacent system through the inlet and outlet flues of the bag dust collector, causing a larger fire.

[0003] Patent No. CN115999264A discloses a bag dust collector with a fire extinguishing function. The invention adds fire extinguishing materials around the filter element, increases the floor space of the bag dust collector, and increases the cost of the bag dust collector. However, when the space available for the bag dust collector is limited, the patented bag dust collector cannot be used; Patent No. CN116617786A relates to a fireproof dust collector and a fire prevention method thereof. This bag dust collector has a complex structure, occupies a large area, and may cause many failures during operation. The pipes of its fire extinguishing device are connected to the clean air chamber and bag chamber of the dust collector. The dust-laden gas diffuses into the pipes of the fire extinguishing device, causing the pipes to be blocked. When the gas treated by the bag dust collector is high in temperature and contains corrosive substances, the pipes of the fire extinguishing device will soon corrode and fail due to the temperature dropping below the dew point, thereby losing its fire extinguishing function. Utility Model Content

[0004] In order to solve the problems of the prior art, the utility model provides a bag-type dust collector with an automatic fire extinguishing function.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a bag dust collector with automatic fire extinguishing function, comprising a dust removal tower, a clean air chamber, a filter element, a bag chamber and an ash hopper arranged from top to bottom in the dust removal tower, a fire extinguishing mechanism provided in the dust removal tower, the fire extinguishing mechanism including a spray pipe, a nozzle, a safety device, a delivery pipe, an executive valve, a temperature sensor and a fire extinguishing medium bin, the spray pipe is arranged at the upper end of the dust removal tower and is connected to the safety device pipeline, the other side of the safety device is connected to the delivery pipe pipeline, the other end of the delivery pipe is connected to the executive valve pipeline, the executive valve and the fire extinguishing medium bin are connected by a pipeline, and the nozzle and the spray pipe are arranged through.

[0006] As a further improvement, the safety device includes a first flange fixed to the spray pipe, a second flange fixed to the delivery pipe, and a diaphragm arranged between the first flange and the second flange, and the first flange and the second flange are fixed by bolts.

[0007] As a further improvement, the safety device is arranged outside the clean air chamber.

[0008] As a further improvement, the spray pipe, nozzle and safety device are arranged inside the bag chamber.

[0009] As a further improvement, the medium of the fire extinguishing medium bin is inert gas or water.

[0010] In a further improvement, the inert gas is nitrogen.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. During actual use of the present invention, when the temperature inside the dust removal tower is abnormal, the temperature sensor detects that the temperature inside the dust removal tower has reached the set temperature and transmits an alarm signal to the control center. The control center issues an instruction to open the actuator valve, thereby allowing the high-pressure fire extinguishing medium stored in the fire extinguishing medium bin to be transported to the safety device through the pipeline. The safety device is damaged under the pressure of the high-pressure fire extinguishing medium, forming a passage between the spray pipe and the delivery pipe, and finally allowing the fire extinguishing medium to be sprayed out through the nozzle on the spray pipe, thereby extinguishing the flame in the bag filter.

[0013] 2. The utility model has a simple structure and low cost. It can quickly extinguish the fire inside the bag dust collector without increasing the floor space of the bag dust collector.

[0014] 3. The utility model uses a safety device to block the spray pipe and the conveying pipe, so that the dust in the bag dust collector will not enter the subsequent equipment along the pipe and cause damage to the equipment. At the same time, an air stagnant section is formed inside the conveying pipe after the blockage, thereby preventing the conveying pipe from being corroded due to the temperature difference between the inside and the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the dust removal tower of the utility model;

[0017] Figure 3 This is a cross-sectional view of the safety device of the present utility model;

[0018] Figure 4This is a schematic structural diagram of the first flange of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the diaphragm of the utility model;

[0020] Figure 6 It is a structural diagram of the fire extinguishing mechanism of the present utility model.

[0021] In the figure, 1. dust removal tower; 11. clean air chamber; 12. filter element; 13. bag chamber; 14. ash hopper; 2. fire extinguishing mechanism; 21. spray pipe; 22. nozzle; 23. safety device; 231. first flange; 232. second flange; 233. diaphragm; 24. delivery pipe; 25. actuator valve; 26. temperature sensor; 27. fire extinguishing medium bin. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0023] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0024] Below with reference to the embodiment and the attached Figures 1 to 4 , the technical solution of the utility model is further elaborated.

[0025] Example 1

[0026] A bag dust collector with an automatic fire extinguishing function includes a dust removal tower 1, a clean air chamber 11, a filter element 12, a bag chamber 13 and an ash hopper 14 arranged from top to bottom in the dust removal tower 1, a fire extinguishing mechanism 2 is provided in the dust removal tower 1, and the fire extinguishing mechanism 2 includes a spray pipe 21, a nozzle 22, a safety device 23, a delivery pipe 24, an executive valve 25, a temperature sensor 26 and a fire extinguishing medium bin 27, the spray pipe 21 is arranged at the upper end of the dust removal tower 1 and is connected to the safety device 23 by pipe, the other side of the safety device 23 is connected to the delivery pipe 24 by pipe, the other end of the delivery pipe 24 is connected to the executive valve 25 by pipe, the executive valve 25 and the fire extinguishing medium bin 27 are connected by pipe, and the nozzle 22 and the spray pipe 21 are arranged through.

[0027] like Figures 1 to 6 As shown, during the actual use of the present invention, when the temperature in the dust removal tower 1 is abnormal, the temperature sensor 26 detects that the temperature in the dust removal tower 1 has reached the set temperature and transmits an alarm signal to the control center. The control center issues an instruction to open the execution valve 25, so that the high-pressure fire extinguishing medium stored in the fire extinguishing medium bin 27 is transported to the safety device 23 through the pipeline. The safety device 23 is damaged under the pressure of the high-pressure fire extinguishing medium, so that a passage is formed between the spray pipe 21 and the delivery pipe 24, and finally the fire extinguishing medium is sprayed out through the nozzle 22 on the spray pipe 21, thereby extinguishing the flame in the bag filter.

[0028] The utility model has a simple structure and a low cost, and can quickly extinguish a fire occurring inside a bag dust collector without substantially increasing the floor space occupied by the bag dust collector.

[0029] The utility model uses the safety device 23 to block the spray pipe 21 and the conveying pipe 24, so that the dust in the bag dust collector will not enter the subsequent equipment along the pipe and cause damage to the equipment. At the same time, a non-circulating air section is formed inside the conveying pipe 24 after the blockage, so that the conveying pipe 24 will not be corroded due to the temperature difference between the inside and the outside.

[0030] As a further preferred embodiment, the safety device 23 includes a first flange 231 fixed to the spray pipe 21, a second flange 232 fixed to the delivery pipe 24, and a diaphragm 233 arranged between the first flange 231 and the second flange 232, and the first flange 231 and the second flange 232 are fixed by bolts.

[0031] Specifically, such as Figure 3 As shown, the safety device 23 of the present invention is composed of two sets of flanges and a diaphragm 233. It has a simple structure and is convenient for later replacement. The material of the diaphragm 233 can be freely selected and replaced according to the type of fire extinguishing medium, thereby enhancing the applicability of the equipment.

[0032] As a further preferred embodiment, the safety device 23 is arranged outside the clean air chamber 11 to facilitate subsequent maintenance of the equipment.

[0033] As a further preferred embodiment, the spray pipe 21, the nozzle 22 and the safety device 23 are arranged inside the bag chamber 13, which effectively improves the fire extinguishing effect.

[0034] As a further preferred embodiment, the medium of the fire extinguishing medium bin 27 is inert gas or water.

[0035] As a further preferred embodiment, the inert gas is nitrogen.

[0036] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.

Claims

1. A bag dust collector with an automatic fire extinguishing function, comprising a dust removal tower (1), a clean air chamber (11), a filter element (12), a bag chamber (13) and an ash hopper (14) arranged from top to bottom in the dust removal tower (1), characterized in that: A fire extinguishing mechanism (2) is provided in the dust removal tower (1), and the fire extinguishing mechanism (2) comprises a spray pipe (21), a nozzle (22), a safety device (23), a delivery pipe (24), an execution valve (25), a temperature sensor (26), and a fire extinguishing medium bin (27). The spray pipe (21) is provided at the upper end of the dust removal tower (1) and is connected to the safety device (23) through a pipe. The other side of the safety device (23) is connected to the delivery pipe (24) through a pipe. The other end of the delivery pipe (24) is connected to the execution valve (25) through a pipe. The execution valve (25) and the fire extinguishing medium bin (27) are connected through a pipe. The nozzle (22) and the spray pipe (21) are provided through-connected.

2. The bag dust collector with automatic fire extinguishing function according to claim 1, characterized in that: The safety device (23) comprises a first flange (231) fixedly arranged with the spray pipe (21), a second flange (232) fixedly arranged with the delivery pipe (24), and a diaphragm (233) arranged between the first flange (231) and the second flange (232); the first flange (231) and the second flange (232) are fixed by bolts.

3. The bag filter with automatic fire extinguishing function according to claim 1, characterized in that: The safety device (23) is arranged outside the clean air chamber (11).

4. The bag filter with automatic fire extinguishing function according to claim 1, characterized in that: The spray pipe (21), the nozzle (22) and the safety device (23) are arranged inside the bag chamber (13).

5. The bag filter with automatic fire extinguishing function according to claim 1, characterized in that: The medium of the fire extinguishing medium bin (27) is inert gas or water.

6. The bag filter with automatic fire extinguishing function according to claim 5, characterized in that: The inert gas is nitrogen.

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