Cloth bag dust collector with high temperature protection function

Abstract

The utility model discloses a cloth bag dust collector with high temperature protection function belongs to dust removal equipment technical field, including dust remover and flue gas cooling device, be equipped with the air inlet pipe on the dust remover, install temperature sensor in the dust remover near the air inlet pipe, and the flue gas cooling device includes cooling water tank, flue gas pipe, fin and fan, and cooling water tank contains cooling medium, and the flue gas pipe is linked together with the air inlet pipe, and the flue gas pipe includes the first coil pipe and second coil pipe that intercommunicate, and the first coil pipe is immersed in cooling medium, and the second coil pipe is attached with the outside wall of cooling water tank, and the end of fin is connected with the pressing plate, and the pressing plate holds and fixes the second coil pipe on the outside wall of cooling water tank, and the fan is located one side of fin. The cloth bag dust collector of the utility model, the first coil pipe and second coil pipe can respectively with the cooling medium of cooling water tank and the heat exchange between fin when passing in flue gas, prevent the equipment high temperature loss, guarantee the dust removal efficiency, reduce the occurrence of safety accidents.

Description

Technical Field

[0001] This utility model relates to the field of dust removal equipment technology, and in particular, to a bag filter dust collector with high-temperature protection function. Background Technology

[0002] A baghouse dust collector is a high-efficiency dry dust removal device that separates dust by filtering solid particles in dust-laden gas through filter bags. Its working principle is that after the dust-laden gas enters the dust collector, coarse dust particles are separated due to gravity settling, while the remaining dust particles are trapped on the outer surface of the filter bags when they enter the filter bag chamber with the airflow. The purified gas is discharged after passing through the inside of the filter bags.

[0003] When the temperature of a baghouse dust collector rises due to excessively high temperatures from the incoming dust-laden flue gas, timely measures must be taken to prevent equipment damage, maintain dust collection efficiency, or even cause safety accidents. Chinese patent document CN218339241U discloses an automatic high-temperature protection device for a baghouse dust collector. This device uses a first temperature sensor installed on the inner wall of the cleanroom to accurately detect the internal temperature and transmit it to a processor. The processor then automatically opens a first electric valve to spray water mist into the dust collector for cooling. However, a common problem in actual use is that the water mist cooling process causes the filter bags to become damp. Damp filter bags lead to fiber caking, reduced air permeability, and decreased dust collection efficiency. After prolonged use, dust adhering to the filter bag surface combines with moisture to form a caking layer, causing the filter bags to lose their filtering function. In this case, the filter bags must be replaced, reducing their lifespan and increasing production costs.

[0004] Therefore, it is necessary for the inventors to improve the high-temperature protection device of the bag filter to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is: in order to overcome the above-mentioned defects in the prior art, a bag filter with high temperature protection function is provided.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a bag filter with high temperature protection function, including a dust collector body and a flue gas cooling device. The dust collector body is provided with an air inlet pipe. A temperature sensor is installed in the dust collector body near the air inlet pipe. The flue gas cooling device includes a cooling water tank, a flue gas pipe, fins and a fan. The cooling water tank contains a cooling medium. The flue gas pipe is connected to the air inlet pipe. The flue gas pipe includes a first coil and a second coil that are connected to each other. The first coil is immersed in the cooling medium. The second coil is attached to the outer wall of the cooling water tank. A pressure plate is connected to the end of the fins. The pressure plate presses and fixes the second coil to the outer wall of the cooling water tank. The fan is located on one side of the fins.

[0007] Furthermore, the first coil has a threaded tube structure, and the second coil has a serpentine structure.

[0008] Furthermore, the outer wall of the cooling water tank has a recessed adapter groove, the extension path and shape of which are the same as those of the second coil, and the outer surface of the second coil is in close contact with the groove wall of the adapter groove.

[0009] Furthermore, an arc-shaped groove is formed on the surface of the pressure plate away from the fins. The arc-shaped groove cooperates with the second coil, and the groove wall of the arc-shaped groove is in contact with the outer surface of the second coil.

[0010] Furthermore, the pressure plate is fixedly connected to the outer wall of the cooling water tank by bolts.

[0011] Furthermore, the second coil includes multiple parallel straight pipe sections and an arc-shaped section connecting the ends of two adjacent straight pipe sections, and the pressure plate presses and fixes the straight pipe sections to the outer wall of the cooling water tank.

[0012] Furthermore, multiple grooves are formed on the outer surface of the pressure plate.

[0013] Furthermore, the fins are multiple and vertically arranged, with a heat dissipation channel formed between each pair of adjacent fins, and the fan is located below the heat dissipation channel.

[0014] Furthermore, the bag filter with high-temperature protection function also includes a controller, and the temperature sensor and the fan are electrically connected to the controller.

[0015] Furthermore, the cooling water tank is connected to a drain pipe and a return pipe, both of which are connected to the cooling equipment.

[0016] The beneficial effects of this utility model are as follows: The bag filter dust collector with high temperature protection function of this utility model has a flue gas cooling device installed on the side of the dust collector body. Before the high temperature flue gas enters the dust collector body through the flue gas pipe, the first coil exchanges heat with the cooling medium in the cooling water tank, and the second coil exchanges heat with the fins, thereby cooling the flue gas flowing through the flue gas pipe, avoiding excessively high flue gas temperature entering the dust collector body, preventing high temperature damage to the equipment, ensuring dust removal efficiency, and reducing the occurrence of safety accidents. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of the bag filter dust collector with high temperature protection function of this utility model;

[0019] Figure 2 yes Figure 1 A perspective view of the flue gas cooling device in a bag filter with high-temperature protection function.

[0020] Figure 3 yes Figure 2 Right view of the flue gas cooling device shown;

[0021] Figure 4 yes Figure 1 The diagram shows the control circuit block diagram of a bag filter with high-temperature protection function.

[0022] In the diagram: 1. Dust collector body, 11. Dust collector housing, 12. Filter bag, 13. Dust hopper, 14. Exhaust pipe, 15. Inlet pipe, 16. Temperature sensor, 17. Support frame, 2. Flue gas cooling device, 21. Cooling water tank, 211. Adaptor groove, 212. Drain pipe, 213. Return water pipe, 22. Flue gas pipe, 221. First coil, 222. Second coil, 2221. Straight pipe section, 2222. Arc section, 23. Fins, 231. Pressure plate, 232. Arc groove, 233. Bolt, 230. Heat dissipation channel, 24. Fan, 25. Support platform, 3. Controller. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0024] Please see Figures 1-3This utility model provides a baghouse dust collector with high-temperature protection function, including a dust collector body 1 and a flue gas cooling device 2. The dust collector body 1 includes a dust collection box 11 and filter bags 12 disposed inside the dust collection box 11. A dust hopper 13 is provided at the bottom of the dust collection box 11. An exhaust pipe 14 and an inlet pipe 15 are respectively arranged on the upper and lower sides of the filter bags 12 on the side wall of the dust collection box 11. A blower is installed on the inlet pipe 15. A temperature sensor 16 is installed on the inner wall of the dust collection box 11 near the inlet pipe 15. The flue gas cooling device 2 includes a cooling water tank 21, a flue gas pipe 22, fins 23, and... The fan 24 and the cooling water tank 21 are located on one side outside the dust collector 11. The cooling water tank 21 contains a cooling medium. The flue pipe 22 is connected to the air inlet pipe 15. The flue pipe 22 includes a first coil 221 and a second coil 222 that are connected to each other. The first coil 221 is immersed in the cooling medium in the cooling water tank 21. The second coil 222 is attached to the outer wall of the cooling water tank 21. There are multiple fins 23. Each fin 23 has a pressure plate 231 connected to its end. The pressure plate 231 presses and fixes the second coil 222 to the outer wall of the cooling water tank 21. The fan 24 is located on one side of the fins 23.

[0025] This utility model discloses a baghouse dust collector with high-temperature protection. During operation, dust-laden flue gas, driven by a blower, sequentially passes through the flue gas pipe 22 and the inlet pipe 15 before entering the dust collection chamber 11. Inside the dust collection chamber 11, the gas passes upward through the filter bags 12, where the dust is trapped and falls into the ash hopper 13 at the bottom. The purified flue gas then passes upward through the filter bags 12 and is discharged from the exhaust pipe 14 on the upper side. As the dust-laden flue gas passes through the flue gas pipe 22, some of the heat is exchanged with the cooling medium in the cooling water tank 21. Simultaneously, some heat is transferred to the fins 23, increasing the heat exchange area and facilitating the rapid transfer of heat to the surrounding environment of the fins 23, ultimately reducing the temperature of the dust-laden flue gas. Temperature sensor 16 is used to detect the temperature near air inlet pipe 15. When the detected temperature exceeds the set threshold, fan 24 is started. The airflow generated by fan 24 blows onto fins 23, thereby accelerating the heat dissipation on fins 23, improving heat dissipation efficiency, reducing the temperature of flue gas entering the dust collector body 1, effectively preventing high temperature loss of dust collector body 1, ensuring dust removal effect, and reducing the incidence of safety accidents.

[0026] The first coil 221 and the second coil 222 are configured as coil structures, extending the length of the flue gas pipe 22 and thus increasing the flow path of the dust-laden flue gas. This facilitates sufficient heat exchange between the dust-laden flue gas flowing through the first coil 221 and the cooling medium in the cooling water tank 21, and simultaneously facilitates sufficient heat exchange between the dust-laden flue gas flowing through the second coil 222 and the fins 23. In this embodiment, the first coil 221 has a threaded tube structure, and the second coil 222 has a serpentine structure. The threaded winding structure of the first coil 221 ensures sufficient contact between it and the cooling medium throughout the cooling water tank 21, while the serpentine tube structure of the second coil 222 extends in a plane and can be stably pressed against the outer wall of the cooling water tank 21 by the pressure plate 231, improving installation reliability and also facilitating the full transfer of heat to the fins 23, thereby improving cooling efficiency.

[0027] The cooling water tank 21 has a cuboid structure with an opening at the top, and the flue gas pipe 22 has a circular cross-section. The outer wall of the cooling water tank 21 has a recessed adapter groove 211. The extension path of the adapter groove 211 is the same as that of the second coil 222, and the shape of the adapter groove 211 is the same as that of the second coil 222. Thus, when the second coil 222 is installed on the side wall of the cooling water tank 21, part of the outer surface of the second coil 222 can fit tightly against the groove wall of the adapter groove 211, increasing the contact area between the two. On the one hand, this enhances the connection stability, and on the other hand, it can transfer the heat of the flue gas flowing through the second coil 222 to the side wall of the cooling water tank 21. This part of the heat is dissipated into the surrounding environment through the side wall of the cooling water tank 21, which is conducive to further improving the cooling effect.

[0028] The fins 23 have a sheet-like structure, and the pressure plate 231 has a rectangular strip-like structure. The fins 23 are fixedly connected to one surface of the pressure plate 231. An arc-shaped groove 232 is formed on the surface of the pressure plate 231 away from the fins 23. The arc-shaped groove 232 cooperates with the second coil 222, so that the groove wall of the arc-shaped groove 232 is in contact with part of the outer surface of the second coil 222, and the surface of the pressure plate 231 away from the fins 23 is in contact with the outer wall of the cooling water tank 21. At this time, during operation, the heat on the cooling water tank 21 and the heat on the second coil 222 can be transferred to the fins 23 through the pressure plate 231, and then the heat is dissipated into the surrounding environment through the fins 23.

[0029] In this embodiment, the pressure plate 231 is fixedly connected to the outer wall of the cooling water tank 21 by bolts 233. In addition, multiple grooves 234 are formed on the outer surface of the pressure plate 231. The grooves 234 increase the heat dissipation area of ​​the pressure plate 231, thereby facilitating efficient heat dissipation.

[0030] Additionally, the second coil 222 includes multiple parallel straight pipe sections 2221 and an arc-shaped section 2222 connecting the ends of two adjacent straight pipe sections 2221. A pressure plate 231 presses and fixes the straight pipe sections 2221 to the outer wall of the cooling water tank 21. One pressure plate 231 mates with one straight pipe section 2221, and correspondingly, one fin 23 mates with one pressure plate 231.

[0031] In this embodiment, the fins 23 are vertically arranged, and a heat dissipation channel 230 is formed between each pair of adjacent fins 23. The fan 24 is located below the heat dissipation channel 230. The air generated by the fan 24 can flow from bottom to top through the heat dissipation channel 230, thereby carrying away the heat transferred to the fins 23. The vertical arrangement of the fins 23 and the heat dissipation channel 230 formed by them are vertically connected. The airflow in the heat dissipation channel 230 flows vertically, which conforms to the physical characteristic of hot airflow flowing upward, and is conducive to smooth airflow.

[0032] Please see Figure 4 This invention also includes a controller 3. The temperature sensor 16 and the fan 24 are all electrically connected to the controller 3. In use, the temperature sensor 16 transmits the detected airflow temperature information to the controller 3. Upon receiving the temperature signal, the controller 3 can control the fan 24 to start. Specifically, the temperature sensor 16 has a preset first threshold and a second threshold. The first threshold is higher than the second threshold. When the temperature detected by the temperature sensor 16 is higher than the first threshold, the controller 3 controls the fan 24 to start to accelerate flue gas heat dissipation until the temperature falls below the second threshold, at which point the controller 3 controls the fan 24 to stop operating. The fan 24 includes a fan housing, a motor, and blades. The motor is mounted on the fan housing, and the blades are mounted on the output shaft of the motor, driven by the motor to rotate, thereby causing gas flow.

[0033] In this embodiment, the cooling medium in the cooling water tank 21 is cooling water. A drain pipe 212 and a return pipe 213 are connected to the cooling water tank 21. Both the drain pipe 212 and the return pipe 213 are connected to a cooling device, which is used to cool the cooling water. For example, the cooling device can be a cooling tower as described in the prior art. During use, the drain pipe 212 discharges the cooling medium from the cooling water tank 21 into the cooling device for cooling. Then, the cooling water returns to the cooling water tank 21 through the return pipe 213, thus achieving a circulating flow of cooling water. Water pumps are installed on both the drain pipe 212 and the return pipe 213 to control the discharge and return of the cooling water.

[0034] In this embodiment, a support frame 17 is installed at the bottom of the dust collector body 1, and a support platform 25 is provided at the bottom of the cooling water tank 21. Both the support frame 17 and the support platform 25 are supported on a bearing surface (e.g., the factory floor). The fan 24 is fixedly installed on one side of the support platform 25. The dust collector body 1 can be a bag filter dust collector as described in the prior art, and its structure and use will not be described in detail here.

[0035] This utility model discloses a bag filter dust collector with high-temperature protection function. A flue gas cooling device 2 is installed on the side of the dust collector body 1. Before the high-temperature flue gas enters the dust collector body 1 through the flue gas pipe 22, the first coil 221 exchanges heat with the cooling medium in the cooling water tank 21, and the second coil 222 exchanges heat with the fins. This cools the flue gas flowing through the flue gas pipe 22, preventing the flue gas temperature from becoming too high when it enters the dust collector body 1, preventing high-temperature damage to the equipment, ensuring dust removal efficiency, and reducing the occurrence of safety accidents.

[0036] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A bag filter with high-temperature protection function, characterized in that: The device includes a dust collector body and a flue gas cooling device. The dust collector body is equipped with an air inlet pipe, and a temperature sensor is installed inside the dust collector body near the air inlet pipe. The flue gas cooling device includes a cooling water tank, a flue gas pipe, fins, and a fan. The cooling water tank contains a cooling medium. The flue gas pipe is connected to the air inlet pipe and includes a first coil and a second coil that are interconnected. The first coil is immersed in the cooling medium, and the second coil is attached to the outer wall of the cooling water tank. A pressure plate is connected to the end of the fins, and the pressure plate presses and fixes the second coil to the outer wall of the cooling water tank. The fan is located on one side of the fins.

2. The bag filter with high-temperature protection function as described in claim 1, characterized in that: The first coil has a threaded tube structure, and the second coil has a serpentine structure.

3. The bag filter with high-temperature protection function as described in claim 2, characterized in that: The outer wall of the cooling water tank has a recessed adapter groove. The extension path and shape of the adapter groove are the same as those of the second coil. The outer surface of the second coil is in close contact with the groove wall of the adapter groove.

4. The bag filter with high-temperature protection function as described in claim 3, characterized in that: The pressure plate has an arc-shaped groove on its surface away from the fins. The arc-shaped groove cooperates with the second coil, and the groove wall of the arc-shaped groove is in contact with the outer surface of the second coil.

5. The bag filter with high-temperature protection function as described in claim 4, characterized in that: The pressure plate is fixedly connected to the outer wall of the cooling water tank by bolts.

6. The bag filter with high-temperature protection function as described in claim 4, characterized in that: The second coil includes multiple parallel straight pipe sections and an arc-shaped section connecting the ends of two adjacent straight pipe sections. The pressure plate presses and fixes the straight pipe sections to the outer wall of the cooling water tank.

7. The bag filter with high-temperature protection function as described in claim 4, characterized in that: Multiple grooves are formed on the outer surface of the pressure plate.

8. The bag filter with high-temperature protection function as described in claim 1, characterized in that: The fins are multiple and vertically arranged, with a heat dissipation channel formed between each pair of adjacent fins, and the fan is located below the heat dissipation channel.

9. The bag filter with high-temperature protection function as described in claim 1, characterized in that: The bag filter with high-temperature protection also includes a controller, and the temperature sensor and the fan are electrically connected to the controller.

10. The bag filter with high-temperature protection function as described in claim 1, characterized in that: The cooling water tank is connected to a drain pipe and a return pipe, both of which are connected to the cooling equipment.

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