Pre-dehumidification bag-type dust collector

Abstract

The utility model discloses a pre-dehumidification bag-type dust remover, which relates to the technical field of dust removers and comprises a dehumidification frame, a dust removal frame arranged on one side of the dehumidification frame, a condensation component, a compressor, a heat release component, a bag component and a dust removal component. The compressor is matched with the heat release pipe and the condensation pipe to control the state change of a condensing agent, so that the condensation pipe absorbs heat in surrounding flue gas, the temperature of the flue gas introduced into the condensation chamber is suddenly reduced to be below a dew point, and moisture in the flue gas is liquefied and condensed to form liquid drops to be discharged, so that the aim of dehumidifying the flue gas is fulfilled; the problem that a stubborn adhesive film is formed when the flue gas is filtered by a subsequent dust removal bag is avoided, and the dust removal efficiency is improved; the S-shaped design of the water outlet pipe of the device can form a water layer in the pipe, flue gas is prevented from being discharged from the water outlet pipe, the flue gas enters the heat release chamber from the pipeline to properly increase the temperature after being dehumidified in the condensation chamber, and the low-temperature flue gas is prevented from condensing again after being introduced into the dust removal chamber to corrode equipment and affect normal operation of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of dust collector technology, specifically a pre-dehumidified bag filter dust collector. Background Technology

[0002] A baghouse dust collector is a dry dust filtration device, mainly used to collect fine, dry, non-fibrous dust. Baghouse dust collectors are widely used in industrial production to eliminate dust pollution, such as in the filtration of flue gas from iron and steel plants and coal-fired boilers.

[0003] Existing baghouse dust collectors have high requirements for the dryness of the filtered flue gas, making them unsuitable for certain industrial production processes, such as wet processing and spray drying. Otherwise, wet dust will adhere to the surface of the bag, forming a stubborn sticky film, which will significantly reduce the air permeability of the bag, increase filtration resistance, reduce airflow, and thus affect dust removal efficiency. Utility Model Content

[0004] This utility model provides a pre-dehumidified bag filter, which has the advantage of pre-dehumidifying the flue gas to improve dust removal efficiency, thus solving the problem of bag clogging when existing equipment encounters flue gas with high humidity.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pre-dehumidified bag filter, comprising a dehumidification frame and a dust collection frame disposed on one side of the dehumidification frame, and further comprising a condensation assembly, a compressor, a heat dissipation assembly, a bag assembly, and a dust removal assembly, wherein:

[0006] The bottom of the dehumidifier rack is fixedly connected to the base plate, and the dehumidifier racks are fixedly installed with screws to form a condensation chamber and a heat release chamber.

[0007] The condenser chamber is connected to the flue gas inlet pipe via a flange on one side. The condenser assembly includes a condenser tube, which is composed of several curved, interconnected steel pipes. The condenser tube is mounted on a condenser rack, and the compressor is connected to the condenser tube.

[0008] The heat dissipation component includes a heat dissipation tube, and several heat dissipation fins are welded to the outer side of the heat dissipation tube. The heat dissipation tube is connected to the compressor, and the condenser tube is connected to the heat dissipation tube through an expansion valve.

[0009] In a preferred embodiment of this utility model, the condensation chamber and the heat release chamber are connected by a pipe, the condensation rack is provided with a number of water storage plates, and the water storage plates are provided with a number of water leakage holes.

[0010] As a preferred technical solution of this utility model, the compressor is fixed to the base plate by screws, the base plate is provided with a water storage tank, the water storage tank is located directly below the water storage plate, and one end of the water storage plate is fixed to the barrier plate.

[0011] As a preferred embodiment of this utility model, the inner wall of the water storage tank is connected to a water outlet pipe, the water outlet pipe has an S-shaped structure, the height of the water outlet pipe is lower than the opening of the water storage tank, the condenser pipe is located inside the condenser chamber, and the heat release pipe is located inside the heat release chamber.

[0012] As a preferred technical solution of this utility model, one side of the heat dissipation chamber is connected to the dust removal chamber through a pipe. The dust removal chamber is installed on a support, the bottom of the dust removal chamber is connected to the ash hopper, the top of the dust removal chamber is provided with a sealing cover, and a pulse controller and a clean air outlet are respectively provided on both sides of the dust removal chamber.

[0013] As a preferred technical solution of this utility model, the dust removal chamber is provided with a dust removal trough, a support plate is welded in the dust removal trough, the support plate is provided with a plurality of mounting slots, the mounting slots are fitted with dust removal bags and filter bag frames, the dust removal bags are nested on the outside of the filter bag frames, and the filter bag frames penetrate the support plate.

[0014] As a preferred technical solution of this utility model, the dust removal component includes a gas storage cylinder, a plurality of pulse solenoid valves are connected to the gas storage cylinder, the pulse solenoid valves are connected to the main jetting pipe, the bottom of the main jetting pipe is connected to a plurality of secondary jetting pipes, and the secondary jetting pipes are installed directly above the filter bag frame.

[0015] Compared with the prior art, this utility model provides a pre-dehumidified bag filter dust collector with the following beneficial effects: This utility model uses a compressor in conjunction with a heat release tube and a condenser tube to control the state change of the condenser, causing the condenser tube to absorb heat from the surrounding flue gas, resulting in a sharp drop in the temperature of the flue gas entering the condensation chamber below the dew point. The moisture in the flue gas is liquefied and condensed into droplets, which are then discharged, thus achieving the purpose of flue gas dehumidification. This avoids the problem of the dust collector bag forming a stubborn sticky film when filtering flue gas, improving dust removal efficiency. The S-shaped design of the water outlet pipe of this device can form a water layer in the pipe, preventing flue gas from being released from the water outlet pipe. After the flue gas is dehumidified in the condensation chamber, it enters the heat release chamber through the pipe to appropriately increase the temperature, preventing low-temperature flue gas from entering the dust collector chamber and causing re-condensation, which would corrode the equipment and affect its normal operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a partial structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the condenser assembly structure of this utility model;

[0019] Figure 4 This is a structural diagram of the heat-dissipating component of this utility model;

[0020] Figure 5This is a schematic diagram of the internal structure of the dust removal chamber of this utility model;

[0021] Figure 6 This is a structural diagram of the bag assembly of this utility model;

[0022] Figure 7 This is a structural diagram of the dust removal component of this utility model.

[0023] In the diagram: 1. Dehumidifier rack; 11. Base plate; 12. Flange; 13. Flue gas inlet pipe; 14. Pipe; 2. Dust collector rack; 21. Dust collector chamber; 211. Dust collector trough; 22. Support frame; 23. Ash hopper; 24. Sealing cover; 25. Pulse controller; 26. Clean air outlet; 3. Condensation assembly; 31. Condensation chamber; 32. Condensation pipe; 33. Condensation rack; 331. Water storage plate; 332. Leakage hole 34. Water storage tank; 35. Baffle plate; 36. Water outlet pipe; 4. Compressor; 41. Expansion valve; 5. Heat dissipation assembly; 51. Heat dissipation chamber; 52. Heat sink; 53. Heat dissipation pipe; 6. Bag assembly; 61. Support plate; 62. Mounting slot; 63. Dust collection bag; 64. Filter bag frame; 7. Dust removal assembly; 71. Gas storage cylinder; 72. Pulse solenoid valve; 73. Main jet cleaning pipe; 74. Secondary jet cleaning pipe. Detailed Implementation

[0024] 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. Example 1

[0025] Please see Figures 1-7 This utility model discloses a pre-dehumidified bag filter dust collector, including a dehumidification frame 1 and a dust collector frame 2 disposed on one side of the dehumidification frame 1, and also includes a condensation assembly 3, a compressor 4, a heat dissipation assembly 5, a bag assembly 6, and a dust removal assembly 7, wherein:

[0026] The bottom of the dehumidifier rack 1 is fixedly connected to the base plate 11, and the dehumidifier rack 1 is fixedly installed with a condensation chamber 31 and a heat release chamber 51 by screws.

[0027] The condenser chamber 31 is connected to the flue gas inlet pipe 13 via flange 12 on one side. The condenser assembly 3 includes a condenser pipe 32, which is composed of several curved connected steel pipes. The condenser pipe 32 is mounted on the condenser rack 33. The compressor 4 is connected to the condenser pipe 32.

[0028] Please refer to the appendix. Figure 4The heat dissipation component 5 includes a heat dissipation pipe 53, and several heat sinks 52 are welded to the outer side of the heat dissipation pipe 53. The heat dissipation pipe 53 is connected to the compressor 4. The condenser pipe 32 is connected to the heat dissipation pipe 53 through the expansion valve 41. Specifically, the compressor 4 draws in low-temperature and low-pressure refrigerant gas, increases its pressure and temperature by compression, and then discharges the high-temperature and high-pressure gas into the heat dissipation pipe 53. The high-temperature and high-pressure refrigerant rapidly releases energy and cools down to the outside world through the outer wall of the pipe and the heat sinks 52.

[0029] Please refer to the appendix. Figure 3 The condensing chamber 31 and the heat dissipation chamber 51 are connected by a pipe 14. The condensing rack 33 is provided with several water storage plates 331 and several water leakage holes 332. Specifically, water droplets condense on the water storage plates 331 and the condensing pipe 32 and leak down from the water leakage holes 332.

[0030] In this embodiment, high-pressure liquid refrigerant enters the condenser tube 32 through the expansion valve 41. The expansion valve 41 reduces the refrigerant pressure and temperature. At this time, the low-temperature, low-pressure liquid refrigerant in the condenser tube 32 begins to absorb heat from the surrounding flue gas, thereby evaporating into gaseous refrigerant. Simultaneously, the flue gas temperature drops sharply to below the dew point, and the moisture liquefies and condenses onto the condenser tube 32 and the water storage plate 331 to form droplets, thereby achieving the purpose of dehumidifying the flue gas. Example 2

[0031] Based on the above embodiment 1, please refer to the appendix. Figure 2 , Figure 5 , Figure 6 as well as Figure 7 The compressor 4 is fixed to the base plate 11 by screws. The base plate 11 is provided with a water storage tank 34, which is located directly below the water storage plate 331. One end of the water storage plate 331 is fixed to the baffle plate 35.

[0032] The inner wall of the water storage tank 34 is connected to the outlet pipe 36. The outlet pipe 36 has an S-shaped structure and its height is lower than the opening of the water storage tank 34. The condenser pipe 32 is located inside the condenser chamber 31, and the heat release pipe 53 is located inside the heat release chamber 51. Specifically, the S-shaped design of the outlet pipe 36 can form a water layer in the pipe to prevent flue gas from being released from the outlet pipe 36.

[0033] One side of the heat dissipation chamber 51 is connected to the dust removal chamber 21 through the pipe 14. The dust removal chamber 21 is installed on the bracket 22. The bottom of the dust removal chamber 21 is connected to the ash hopper 23. The top of the dust removal chamber 21 is provided with a sealing cover 24. The dust removal chamber 21 is provided with a pulse controller 25 and a clean air outlet 26 on both sides respectively. Specifically, the filter bag in the dust removal chamber 21 can be replaced and cleaned by opening the sealing cover 24.

[0034] The dust removal chamber 21 is equipped with a dust removal trough 211. A support plate 61 is welded inside the dust removal trough 211. The support plate 61 has several mounting slots 62. The mounting slots 62 are fitted with dust removal bags 63 and filter bag frames 64. The dust removal bags 63 are nested on the outside of the filter bag frames 64. The filter bag frames 64 penetrate the support plate 61. Specifically, the filter bags are pressed into the mounting slots 62 by the filter bag frames 64 to achieve support and limit the position of the dust removal bags 63.

[0035] The dust removal assembly 7 includes a gas storage cylinder 71, which is connected to several pulse solenoid valves 72. The pulse solenoid valves 72 are connected to the main jet cleaning pipe 73, and the bottom of the main jet cleaning pipe 73 is connected to several secondary jet cleaning pipes 74. The secondary jet cleaning pipes 74 are installed directly above the filter bag frame 64.

[0036] In this embodiment, the pulse controller 25 controls the pulse solenoid valve 72 to open and close rapidly, the compressed air in the gas storage cylinder 71 is released and dispersed from the main jet pipe 73 to each jet auxiliary pipe 74 to form a high-pressure airflow, the high-pressure airflow sprays onto the dust collection bag 63 below to make it shake at high speed, and shakes off the dust on the filter bag.

[0037] The working principle and usage process of this utility model are as follows: First, the flue gas to be treated enters the condenser chamber 31 through the flue gas inlet pipe 13. The compressor 4 is started to draw in low-temperature and low-pressure refrigerant gas. By compression, its pressure and temperature are increased. Then, the high-temperature and high-pressure gas is discharged into the heat release pipe 53. The high-temperature and high-pressure refrigerant releases energy and cools down rapidly to the outside through the outer wall of the pipe and the heat sink 52, becoming a liquid refrigerant. Then, the high-pressure liquid refrigerant enters the condenser pipe 32 through the expansion valve 41. The expansion valve 41 reduces the refrigerant pressure and temperature. At this time, the low-temperature and low-pressure liquid refrigerant in the condenser pipe 32 begins to absorb heat from the surrounding flue gas, thereby evaporating into a gaseous refrigerant. At the same time, the flue gas temperature drops sharply to below the dew point. The moisture liquefies and condenses on the condenser pipe 32 and the water storage plate 331 to form droplets, thereby achieving the purpose of flue gas dehumidification. This avoids the problem of the dust bag 63 forming a stubborn sticky film when filtering flue gas, thus improving the dust removal efficiency.

[0038] Water droplets leak down from the drain hole 332 and eventually collect in the water storage tank 34. After accumulating for a period of time, they can be released through the water outlet pipe 36. The S-shaped design of the water outlet pipe 36 can form a water layer in the pipe, preventing flue gas from being released from the water outlet pipe 36. After the flue gas is dehumidified in the condensation chamber 31, it enters the heat release chamber 31 through the pipe 14 to appropriately increase the temperature, so as to prevent low-temperature flue gas from entering the dust removal chamber 21 and causing re-condensation, which would corrode the equipment and affect its normal operation.

[0039] The flue gas then enters the dust removal chamber 21 and is purified by the filtration of the dust removal bag 63. It then passes through the filter bag frame 64 and enters the support plate 61 above it, and finally exits from the clean gas outlet 26. After the dust removal bag 63 has been used for a period of time, the dust attached to the filter bag needs to be removed. The pulse controller 25 controls the pulse solenoid valve 72 to open and close quickly, and the compressed air in the air storage bottle 71 is released and dispersed from the main jet pipe 73 to each jet auxiliary pipe 74 to form a high-pressure airflow. The high-pressure airflow sprays onto the dust removal bag 63 below, causing it to shake at high speed, shaking the dust on the filter bag into the dust hopper 23 for collection, thus removing the dust from the filter bag.

Claims

1. A pre-dehumidified bag filter, comprising a dehumidification frame (1) and a dust collection frame (2) disposed on one side of the dehumidification frame (1), characterized in that, It also includes a condenser assembly (3), a compressor (4), a heat dissipation assembly (5), a bag filter assembly (6), and a dust removal assembly (7), wherein: The bottom of the dehumidifier rack (1) is fixedly connected to the base plate (11), and the dehumidifier rack (1) is fixedly installed with a condensation chamber (31) and a heat release chamber (51) by screws. The condenser chamber (31) is connected to the flue gas inlet pipe (13) via a flange (12) on one side. The condenser assembly (3) includes a condenser pipe (32), which is composed of several curved connected steel pipes. The condenser pipe (32) is mounted on the condenser rack (33). The compressor (4) is connected to the condenser pipe (32). The heat dissipation component (5) includes a heat dissipation tube (53), and a number of heat dissipation fins (52) are welded to the outer side of the heat dissipation tube (53). The heat dissipation tube (53) is connected to the compressor (4), and the condenser tube (32) is connected to the heat dissipation tube (53) through an expansion valve (41).

2. The pre-dehumidifying bag filter according to claim 1, characterized in that: The condensing chamber (31) and the heat release chamber (51) are connected by a pipe (14). The condensing rack (33) is provided with several water storage plates (331), and the water storage plates (331) are provided with several water leakage holes (332).

3. The pre-dehumidifying bag filter according to claim 2, characterized in that: The compressor (4) is fixed to the base plate (11) by screws. The base plate (11) is provided with a water storage tank (34). The water storage tank (34) is located directly below the water storage plate (331). One end of the water storage plate (331) is fixed to the barrier plate (35).

4. The pre-dehumidifying bag filter according to claim 3, characterized in that: The inner wall of the water storage tank (34) is connected to the water outlet pipe (36), which has an S-shaped structure. The height of the water outlet pipe (36) is lower than the opening of the water storage tank (34). The condenser pipe (32) is located inside the condenser chamber (31), and the heat release pipe (53) is located inside the heat release chamber (51).

5. The pre-dehumidifying bag filter according to claim 4, characterized in that: The heat dissipation chamber (51) is connected to the dust removal chamber (21) on one side through the pipe (14). The dust removal chamber (21) is installed on the bracket (22). The bottom surface of the dust removal chamber (21) is connected to the ash hopper (23). The top of the dust removal chamber (21) is provided with a sealing cover (24). The dust removal chamber (21) is provided with a pulse controller (25) and a clean air outlet (26) on both sides.

6. The pre-dehumidifying bag filter according to claim 5, characterized in that: The dust removal chamber (21) is provided with a dust removal trough (211) inside. A support plate (61) is welded inside the dust removal trough (211). The support plate (61) is provided with a number of mounting slots (62). The mounting slots (62) are fitted with dust removal bags (63) and filter bag frames (64). The dust removal bags (63) are nested on the outside of the filter bag frames (64). The filter bag frames (64) penetrate the support plate (61).

7. The pre-dehumidifying bag filter according to claim 1, characterized in that: The dust removal assembly (7) includes a gas storage cylinder (71), which is connected to several pulse solenoid valves (72). The pulse solenoid valves (72) are connected to the main jetting pipe (73), and the bottom of the main jetting pipe (73) is connected to several secondary jetting pipes (74). The secondary jetting pipes (74) are installed directly above the filter bag frame (64).

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