Bag cleaning mechanism of bag filter

Abstract

The application discloses a bag cleaning mechanism of a bag dust collector, which comprises a box body and a bag, a partition plate is arranged in the box body, and the bag is arranged at the bottom of the partition plate; a cylinder and a plurality of beating components are arranged in the bag, and a pair of pistons which can slide in the cylinder are arranged in the bag, and the cylinder is connected with the partition plate; a backflushing structure is arranged on the cylinder and used for providing high-pressure gas to impact the bag; a connecting rod is arranged between the pistons and the beating components and rotationally connected, the pistons can move close to or away from each other and drive the beating components to beat the bag. The application can drive the beating components to beat the bag by moving radially and reciprocally, and cooperate with the backflushing structure, so as to ensure the cleaning effect of dust on the bag and improve the filtering efficiency.

Description

Technical Field

[0001] This application relates to the field of boiler technology, and in particular to a bag cleaning mechanism for a bag filter dust collector. Background Technology

[0002] Baghouse dust collectors are a technology that uses fiber filter bags to filter and purify dust-laden gas. By trapping dust particles in the filter bags, the gas and dust are separated. They are widely used in flue gas purification in industries such as power, metallurgy, chemical, and building materials.

[0003] Existing dust removal devices typically only use a back-blowing method to clean the surface of the filter bags, by spraying high-pressure back-blowing airflow to impact the dust on the surface of the filter bags. Although this can clean the dust on the surface of the filter bags, it cannot contact and beat the filter bags, resulting in poor cleaning effect. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides a bag cleaning mechanism for a baghouse dust collector. This mechanism uses a driving beater component to reciprocate radially and beat the bag, combined with a backflushing structure, to ensure effective cleaning of dust from the bag. The technical solution is as follows:

[0005] The bag cleaning mechanism of the bag filter includes a housing and a bag, wherein a partition is provided inside the housing and the bag is installed at the bottom of the partition;

[0006] The bag contains a cylindrical body and several beating components, as well as a pair of pistons that slide inside the cylindrical body. The cylindrical body is connected to the partition.

[0007] The cylinder is equipped with a backflush structure for providing high-pressure gas to impact the filter bag;

[0008] The piston and the striking component are rotatably connected by a connecting rod, and the pistons can move closer or further apart, driving the striking component to strike the cloth bag.

[0009] Preferably, a driving cavity is formed between the piston and the cylinder; the cylinder is provided with an air passage communicating with the driving cavity, for driving the pistons to move closer or further apart.

[0010] Preferably, the side of the cylinder is provided with a plurality of limiting grooves, the side of the piston is provided with a protrusion that moves along the limiting grooves, and the connecting rod rotatably connects the protrusion and the striking component.

[0011] More preferably, the drive cavity is provided with an elastic component for pushing the piston to move.

[0012] Preferably, it further includes a sealing component, which is sleeved on the piston and located between the piston and the cylinder.

[0013] Preferably, the patting component is provided with a plurality of ventilation grooves.

[0014] More preferably, the piston length is L1, the limiting groove length is L2, and L1 > 2L2.

[0015] More preferably, the drive chamber includes a first chamber disposed between the pistons and a second chamber disposed between the pistons and the cylinder.

[0016] More preferably, the airway includes a flow channel one and a flow channel two, the flow channel one being connected to the cavity one, and the flow channel two being connected to the cavity two.

[0017] Preferably, the backflush structure includes a backflush hole, and the cylinder is provided with a backflush flow channel, the backflush hole being connected to the backflush flow channel.

[0018] Compared with the prior art, the beneficial effects of this application are as follows:

[0019] This application uses high-pressure gas to drive a piston to move, which in turn drives a connecting rod to move a beating component back and forth in the radial direction to beat the filter bag. The impact force of the beating component on the filter bag during beating removes dust from the outer surface of the filter bag. At the same time, in conjunction with a backflushing structure, the cleaning effect on the surface of the filter bag can be improved, thereby improving the filtration efficiency. Attached Figure Description

[0020] Figure 1 This is a simplified schematic diagram of the installation location in this application;

[0021] Figure 2 This is a schematic diagram of the internal structure of this application;

[0022] Figure 3 This is a cross-sectional view of this application.

[0023] In the picture:

[0024] 1. Box body; 2. Partition plate; 3. Cloth bag; 4. Cylinder body; 41. Limiting groove; 5. Beating component; 50. Ventilation groove; 6. Piston; 7. Connecting rod; 8. Elastic component; 9. Drive chamber; 91. Chamber 1; 92. Chamber 2; 10. Backflush structure; 110. Backflush hole; 120. Backflush channel; 11. Channel 1; 12. Channel 2; 13. Mounting bracket; 14. Air inlet; 15. Exhaust port; 16. Ash discharge port. Detailed Implementation

[0025] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described in this application are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0026] See Figures 1 to 3 To further elaborate on this application:

[0027] Combination Figure 1 The bag cleaning mechanism of the bag filter includes a housing 1 and several bags 3. The housing 1 is provided with a partition 2, and the bags 3 are installed at the bottom of the partition 2. The partition 2 divides the housing 1 into a filtration chamber and a purification chamber, and the bags 3 are located in the filtration chamber.

[0028] The bag 3 is provided with a cylinder 4 and several beating components 5, as well as a pair of pistons 6 that slide inside the cylinder 4. The cylinder 4 is provided with a backlash structure 10 for providing high-pressure gas to impact the bag 3. The partition 2 is connected to the box 1.

[0029] The piston 6 and the beating component 5 are rotatably connected by a connecting rod 7. The pistons 6 can move closer or further apart, driving the beating component 5 to beat the cloth bag 3. By having the piston 6 drive the connecting rod 7 to drive the beating component 5 to beat the cloth bag 3, the combined effect of the recoil structure 10 can greatly improve the cleaning effect on the dust on the outer surface of the cloth bag 3.

[0030] Combination Figure 3 In this embodiment, a driving chamber 9 is formed between the piston 6 and the cylinder 4; the cylinder 4 is provided with an air passage communicating with the driving chamber 9, which is used to drive the pistons 6 to move away from or closer to each other. High-pressure gas is supplied to the driving chamber 9 through the air passage, thereby driving the pistons 6 to move away from or closer to each other, and causing the striking component 5 to move rapidly.

[0031] This application uses high-pressure gas to drive the piston 6 to move closer to or further away, which in turn drives the tapping component 5 to reciprocate in the radial direction to tap the cloth bag 3 via the connecting rod 7. The impact force of the tapping component 5 on the cloth bag 3 removes dust from the outer surface of the cloth bag 3. At the same time, in conjunction with the backwash structure 10, the cleaning effect on the surface of the cloth bag 3 can be improved, thereby improving the filtration efficiency.

[0032] Combination Figure 3The cylinder body 4 has several limiting grooves 41 distributed on its side. The piston 6 has a protrusion on its side that slides within the limiting grooves 41. The connecting rod 7 rotatably connects the protrusion and the striking component 5. The striking component 5 has a hinge seat, and the two ends of the connecting rod 7 are respectively hinged to the protrusion via the hinge seat. When the piston 6 moves, the connecting rod 7 drives the striking component 5 to reciprocate in the radial direction.

[0033] The driving chamber 9 includes a first chamber 91 disposed between the pistons 6, and a second chamber 92 disposed between the pistons 6 and the cylinder 4. When gas is filled into the first chamber 91, the pistons 6 move away from each other, and the striking component 5 moves closer to the cylinder 4; when gas is filled into the second chamber 92, the pistons 6 move closer to each other, and the striking component 5 moves towards the cloth bag 3 to impact the cloth bag 3. The farthest distance between the striking component 5 and the cylinder 4 can be determined by the length of the limiting groove 41.

[0034] Combination Figure 2 The air passage includes a first flow passage 11 and a second flow passage 12. Flow passage 11 connects to a first cavity 91, and flow passage 12 connects to a second cavity 92. Flow passage 11 and flow passage 12 are used to supply or discharge air into or from the respective flow passages. In this embodiment, flow passage 11 connects to the first cavity 91, and flow passage 12 connects to the second cavity 92. Flow passage 11 and flow passage 12 can be connected to the air compressor via a solenoid reversing valve; the piston 6's movement speed can be controlled by controlling the air passage supply pressure.

[0035] During the tapping process, air enters through flow channel 11 and exhausts through flow channel 2; during the resetting process, air enters through flow channel 2 and exhausts through flow channel 11.

[0036] In some embodiments, the cavity 92 is provided with an elastic member 8 for pushing the piston 6 to move. The elastic member 8 may be a spring; the elastic member 8 assists the piston 6 in moving, thereby increasing the moving speed of the piston 6 and further increasing the beating force on the cloth bag 3.

[0037] The piston 6 is also provided with a sealing component, which is located between the piston 6 and the cylinder 4. The sealing component is a sealing ring; the sealing component is provided at both ends of the piston 6, and is located on both sides of the protrusion, thereby preventing gas leakage from the first cavity 91 and the second cavity 92, and ensuring the sealing performance of the first cavity 91 and the second cavity 92.

[0038] Combination Figure 2The beating component 5 is provided with several ventilation grooves 50, which can reduce the moving resistance of the beating component 5. This ensures that the bag filter can be cleaned without stopping the bag filter 3.

[0039] Combination Figure 3 In this embodiment, the piston 6 has a length of L1, and the limiting groove 41 has a length of L2, where L1 > 2L2. This is to prevent external air from entering the cavity 1 91 and the cavity 2 92. The protrusion is located in the middle of the piston 6.

[0040] Combination Figure 3 The backflush structure 10 includes a backflush hole 110, and the cylinder 4 is provided with a backflush flow channel 120, with the backflush hole 110 communicating with the backflush flow channel 120. A gap is provided between adjacent striking components 5, and the backflush hole 110 is located within the gap; therefore, the striking component 5 will not cover the backflush hole 110. The backflush flow channel 120 can be connected to a gas supply device of a prior art backflush structure via a connecting pipe, as long as it can provide pulsed high-pressure backflush gas to the backflush hole 110; no limitation is made here.

[0041] The partition 2 is connected to the housing 1; specifically, the purification room is provided with a mounting frame 3 connected to the housing 1, and the mounting frame 3 is used to fix the cylinder 4; the cylinder 4 is detachably connected to the mounting frame 3.

[0042] Combination Figure 1 The housing 1 is equipped with an air inlet 14, an exhaust outlet 15, and a dust discharge outlet 16. The air inlet 14 connects to the filter chamber, the exhaust outlet 15 connects to the purification chamber, and the dust discharge outlet 16 connects to the bottom of the housing 1 for discharging filtered impurities. After the exhaust gas enters the filter chamber through the air inlet 14, the gas filtered by the filter bag 3 enters the purification chamber and is discharged through the exhaust outlet 15. The dust in the exhaust gas is filtered on the outer surface of the filter bag 3. After being cleaned by the beater 5 and the backflushing structure 10, the dust accumulates at the dust discharge outlet 16 at the bottom of the housing 1.

Claims

1. A bag cleaning mechanism for a bag filter dust collector, characterized in that: It includes a box body and a cloth bag, wherein the box body is provided with a partition, and the cloth bag is installed at the bottom of the partition; The bag contains a cylindrical body and several beating components, as well as a pair of pistons that slide inside the cylindrical body. The cylindrical body is connected to the partition. The cylinder is equipped with a backflush structure for providing high-pressure gas to impact the filter bag; The piston and the striking component are rotatably connected by a connecting rod, and the pistons can move closer or further apart, driving the striking component to strike the cloth bag.

2. The bag cleaning mechanism of the bag filter according to claim 1, characterized in that: A driving chamber is formed between the piston and the cylinder; the cylinder is provided with an air passage that communicates with the driving chamber, which is used to drive the pistons to move closer or further apart.

3. The bag cleaning mechanism of the bag filter according to claim 1, characterized in that: The cylinder body has several limiting grooves on its side, and the piston has a protrusion on its side that moves along the limiting groove. The connecting rod rotatably connects the protrusion and the striking component.

4. The bag cleaning mechanism of the bag filter according to claim 2, characterized in that: The drive chamber is equipped with an elastic component for pushing the piston to move.

5. The bag cleaning mechanism of the bag filter according to claim 1, characterized in that: It also includes a sealing component, which is sleeved on the piston and located between the piston and the cylinder.

6. The bag cleaning mechanism of the bag filter according to claim 1, characterized in that: The slapping component is provided with several ventilation slots.

7. The bag cleaning mechanism of the bag filter according to claim 3, characterized in that: The piston has a length of L1, and the limiting groove has a length of L2, where L1 > 2L2.

8. The bag cleaning mechanism of the bag filter according to claim 2, characterized in that: The drive chamber includes a first chamber disposed between the pistons and a second chamber disposed between the pistons and the cylinder.

9. The bag cleaning mechanism of the bag filter according to claim 8, characterized in that: The airway includes a flow channel one and a flow channel two, with the flow channel one connecting to the cavity one and the flow channel two connecting to the cavity two.

10. The bag cleaning mechanism of the bag filter according to claim 1, characterized in that: The backflush structure includes a backflush hole, and the cylinder is provided with a backflush flow channel, the backflush hole being connected to the backflush flow channel.

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