A hot-dip galvanizing flue gas absorption and treatment device

Abstract

This invention relates to the field of environmental engineering, and in particular to a hot-dip galvanized flue gas absorption and treatment device, comprising a base plate, supporting legs, and a housing. Several supporting legs are provided at the upper end of the base plate, and the housing is provided at the upper end of the supporting legs. An air inlet pipe is provided through one side of the housing, and an air outlet pipe corresponding to the air inlet pipe is also provided through one side of the housing. Two symmetrically distributed rectangular plates are slidably arranged inside the housing, and the two rectangular plates separate the air inlet pipe and the air outlet pipe. A filter unit for filtering dust in the flue gas is provided between the rectangular plates. By placing a new filter bag on the replacement unit, the replacement unit can bring the new filter bag into the housing under the drive of the drive unit. At the same time, the filter unit can also move relative to the replacement unit under the drive of the drive unit. Finally, the filter bag is installed in the sleeve by means of the replacement unit.

Description

Technical Field

[0001] This invention relates to the field of environmental engineering, and in particular to a hot-dip galvanizing flue gas absorption and treatment device. Background Technology

[0002] Hot-dip galvanizing fume absorption treatment refers to the process of collecting and purifying the fumes, including fine zinc oxide dust, water vapor, and splashed zinc, which contain a chlorine odor, generated during the hot-dip galvanizing process. Hot-dip galvanizing is a corrosion protection method that obtains a metal coating by immersing steel components in molten zinc. During this process, the reaction between the chemicals on the workpiece surface and the molten zinc produces slight fumes. If these fumes are not treated, they can affect the environment and the health of workers.

[0003] Therefore, in the existing technology, the flue gas emanating from the galvanizing furnace is collected by an external exhaust device, and then the particulate matter in the flue gas is screened out by a bag filter before the filtered flue gas is discharged. Although ordinary bag filters can self-clean the filter bags, they cannot completely clean the dust remaining on the filter bags, and the filter bags are prone to aging, so they still need to be replaced. In addition, the existing technology requires shutting down the bag filter and manually removing the filter bags from the device when replacing the filter bags, which is a cumbersome operation. Furthermore, extra care is required during the replacement process because the dust on the filter bags may be harmful to the human body.

[0004] For a more accurate comparison, Chinese patent publication number CN104785027B discloses a bag filter dust collector.

[0005] It includes a dust collector housing, with an air outlet on one side of the upper end and an air inlet on one side of the lower end. The dust collector housing has a dust collection cavity inside. The lower half of the dust collection cavity has a dust hopper, and the upper half of the dust collection cavity has a dust collection bag. The dust hopper is open at both the upper and lower ends. The dust hopper has a sedimentation cavity with a smaller upper structure and a larger lower structure, an expansion cavity with a larger upper structure and a smaller lower structure, and a ash discharge cavity with a larger upper structure and a smaller lower structure. The sedimentation cavity is located at the lower end of the expansion cavity, and the ash discharge cavity is located at the lower end of the sedimentation cavity. The middle part of the sedimentation cavity is connected to the air inlet.

[0006] However, the aforementioned baghouse dust collectors still have some shortcomings in actual use:

[0007] 1. Although the above-mentioned bag filter can improve the effect and efficiency of flue gas dust removal through its dust removal cavity and special installation method of the filter bags, after a long period of use, the filter bags inside the device will be full of dust or become aged. It is still necessary to manually open the device and replace the filter bags. This process will take a certain amount of time and slow down the flue gas treatment speed.

[0008] 2. The bag filter described above can only treat dust in flue gas. When dealing with some special gases, such as flue gas generated by hot-dip galvanizing, which may contain some heavy metal gases, a specific chemical reaction device is required to remove them. The above-mentioned device cannot remove them, nor can it connect the treated gas to external secondary treatment equipment. Therefore, its applicability is low.

[0009] Therefore, based on the above-stated viewpoints, there is still room for improvement in existing baghouse flue gas treatment devices. Summary of the Invention

[0010] To address the aforementioned problems, this invention provides a hot-dip galvanizing flue gas absorption and treatment device, comprising a base plate, supporting legs, and a housing. Several supporting legs are provided at the upper end of the base plate, and the housing is provided at the upper end of the supporting legs. An air inlet pipe is provided through one side of the housing, and an air outlet pipe corresponding to the air inlet pipe is also provided through one side of the housing. Two symmetrically distributed rectangular plates are slidably arranged inside the housing, and the two rectangular plates separate the air inlet pipe and the air outlet pipe. A filter unit for filtering dust in the flue gas is provided between the rectangular plates.

[0011] The filter unit includes a sleeve disposed between rectangular plates, with the sleeve extending vertically. Several strip grooves are provided on the outer side of the sleeve and distributed along its axis. A filter bag is installed inside the sleeve to filter the flue gas inside the sleeve.

[0012] Preferably, the filter unit further includes several U-shaped plates disposed on the upper rectangular plate, and the several U-shaped plates correspond one-to-one with several sleeves. The U-shaped plates are provided with insertion tubes with U-shaped cross sections corresponding to the openings at the upper ends of the sleeves. One end of the filter bag passes through the opening at the upper end of the sleeve and is threadedly connected to the insertion tube.

[0013] Preferably, the bag assembly includes a circular plate, a cylinder, an L-shaped ring, and a bag. The circular plate is slidably disposed on the inner wall of the sleeve, the cylinder is disposed on the circular plate, the inner wall of the insertion cylinder is provided with a bidirectional thread, and one end of the cylinder is threadedly connected to the bidirectional thread in the corresponding insertion cylinder. The L-shaped ring is slidably disposed on the inner wall of the sleeve, and the bent end of the L-shaped ring is located outside the sleeve. A bag is disposed between the L-shaped ring and the circular plate, which is tightly attached to the inner wall of the sleeve.

[0014] Preferably, the interior of the housing is also equipped with a flow guiding component for guiding the flue gas into the filter bag. The flow guiding component includes several telescopic plates installed on the inner walls of both sides of the housing, and the fixed section of the telescopic plate is fixed to the inner wall of the housing.

[0015] Preferably, a sealing groove communicating with the air inlet pipe is provided on one side of the box body, a sealing plate one located in the sealing groove is provided on one side of the lower rectangular plate, and a sealing plate two corresponding to the air outlet pipe is provided on one side of the upper rectangular plate.

[0016] Preferably, a support plate is provided between several support legs, and a replacement unit for replacing the cloth bag is provided on the support plate. The replacement unit includes several replacement screws that are connected by threads on the support plate, and the replacement screws correspond one-to-one with several sleeves. A sliding groove is provided on the side of the replacement screw near the box body, and a hexagonal block is slidably arranged in the sliding groove. The hexagonal block is connected to the inner wall of the sliding groove by a reset push spring. A hexagonal groove for accommodating the hexagonal block is also provided on the side of the circular plate facing the hexagonal block.

[0017] Preferably, several rectangularly distributed circular grooves are provided on the inner wall at the lower end of the box, and each of the circular grooves corresponds to a replacement screw. A cover plate is hinged to the inner diameter of the circular groove by a torsion spring to seal it.

[0018] Preferably, the outer side of the box is also provided with a pushing unit for pushing out the dust deposited inside. The pushing unit includes a rectangular groove on one side of the box, a push plate is slidably arranged in the rectangular groove, a receiving groove for accommodating the fixed section of the telescopic plate is provided on the push plate, and one side of the fixed section of the telescopic plate is located in the receiving groove. A triangular plate is provided at the end of the push plate facing the inner side of the box and is attached to the bottom of the box.

[0019] Preferably, a swing groove corresponding to the rectangular groove is provided on the other side of the box body, and a swing plate is hinged to the inner wall of the swing groove by a torsion spring.

[0020] Preferably, a collection box is provided on the bottom plate, and the opening of the collection box corresponds to the swing groove.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] I. The present invention places a new filter bag on a replacement unit. The replacement unit, driven by a drive unit, brings the new filter bag into the housing. At the same time, the filter unit, driven by the drive unit, moves relative to the replacement unit. Finally, the filter bag is installed in the sleeve by the replacement unit.

[0023] Second, the present invention uses a filter bag installed inside the filter unit to trap dust in the flue gas. After filtration, the flue gas can be discharged from the box through the discharge pipe. When the flue gas is discharged into the box, it can also be evenly guided to the filter bag on each sleeve by the flow guiding component. When the filter bag needs to be replaced, the drive unit drives the replacement unit and the filter unit to move in opposite directions. Then, the replacement unit removes the used filter bag from the filter unit and then installs a new filter bag on the filter unit.

[0024] Third, the present invention can push the dust at the bottom of the box and the replaced cloth bag into the collection box for collection and storage through the pushing unit, thus avoiding direct manual contact. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0027] Figure 2 This is a schematic diagram of the structure of the filter unit of the present invention.

[0028] Figure 3 This is a planar sectional view of the bag component of the present invention.

[0029] Figure 4 This is a schematic diagram of the flow guiding component of the present invention.

[0030] Figure 5 This is a planar sectional view of the flow guiding component of the present invention.

[0031] Figure 6 This is a schematic diagram of the replacement unit of the present invention.

[0032] Figure 7 This is a planar sectional view of the replacement unit of the present invention.

[0033] Figure 8 This is a schematic diagram of the structure of the driving unit of the present invention.

[0034] Figure 9 This is a planar sectional view of the pushing unit of the present invention.

[0035] Figure 10 This is a schematic diagram of the structure of the driving unit of the present invention.

[0036] Figure 11 This is the present invention. Figure 10 Enlarged view of part of the structure at point A in the middle.

[0037] In the diagram, 1. Base plate; 10. Support leg; 11. Housing; 12. Inlet pipe; 13. Outlet pipe; 14. Rectangular plate; 2. Filter unit; 20. Sleeve; 21. Strip groove; 22. U-shaped plate; 23. Insertion tube; 3. Bag assembly; 30. Circular plate; 31. Cylindrical; 32. L-shaped ring; 33. Bag; 4. Flow guide assembly; 40. Telescopic plate; 41. Sealing groove; 42. Sealing plate one; 43. Sealing plate two; 5. Replacement unit; 50. Support plate; 51. Replace lead screw; 52. Hexagonal block; 53. Reset push spring; 54. Hexagonal groove; 55. Cover plate; 6. Push unit; 60. Push plate; 61. Receiving groove; 62. Triangular plate; 63. Swing plate; 64. Collection box; 65. Push motor; 66. Push lead screw; 7. Drive unit; 70. Sliding plate; 71. Drive lead screw; 72. Drive groove; 73. Drive ring; 74. Drive key; 75. Gear ring; 76. Drive motor; 77. Drive gear. Detailed Implementation

[0038] The following combination Figures 1 to 11 The embodiments of the present invention will be described in detail, but the present invention may be implemented in many different ways as defined and covered by the claims.

[0039] This application discloses a hot-dip galvanizing flue gas absorption and treatment device. The invention is mainly used in the process of dust filtration of flue gas generated by hot-dip galvanizing. In terms of technical effect, it can filter out the dust carried in the gas through a filter bag. Furthermore, when the filter bag needs to be replaced, the invention can automatically remove the filter bag from the device through mechanical cooperation, and then install a new filter bag on the device, avoiding direct contact between the operator and the dust attached to the filter bag.

[0040] Example 1: Refer to Figure 1 and Figure 2 As shown, it includes a base plate 1, support legs 10, a housing 11, an air inlet pipe 12, an air outlet pipe 13, a rectangular plate 14, and a filter unit 2. Several support legs 10 are provided on the upper end of the base plate 1, and the housing 11 is provided on the upper end of the support legs 10. The support legs 10 are used to support the housing 11. An air inlet pipe 12 is provided through one side of the housing 11, and an air outlet pipe 13 corresponding to the air inlet pipe 12 is also provided through one side of the housing 11. The flue gas enters the housing 11 through the air inlet pipe 12 for filtration, and the filtered flue gas can be discharged to the outside of the housing 11 through the air outlet pipe 13.

[0041] Two symmetrically distributed rectangular plates 14 are slidably arranged inside the housing 11, and the two rectangular plates 14 separate the air inlet pipe 12 and the air outlet pipe 13. A filter unit 2 for filtering dust in the flue gas is arranged between the rectangular plates 14. The rectangular plates 14 can drive the filter unit 2 to slide up and down in the housing 11. After the flue gas enters the housing 11 through the air inlet pipe 12, it is filtered by the filter unit 2 and then discharged from the housing 11 through the air outlet pipe 13.

[0042] Continue to refer to Figure 2 As shown, the filter unit 2 is used to filter dust in flue gas. Specifically, the filter unit 2 includes a sleeve 20, a strip groove 21, a cloth bag 3, a U-shaped plate 22, and an insertion tube 23. The sleeve 20 is disposed between two rectangular plates 14, and the rectangular plates 14 can drive the sleeve 20 to move up and down.

[0043] The sleeve 20 is open from top to bottom. Several strip grooves 21 are provided on the outside of the sleeve 20 along its axis. A filter bag 3 is installed inside the sleeve 20. The filter bag 3 is used to filter the flue gas inside the sleeve 20. After the flue gas enters the box 11, it will enter the corresponding filter bag 3 from the bottom of the sleeve 20. Then the flue gas will pass through the filter bag 3 and be discharged into the box 11 from the corresponding strip groove 21. At this time, the flue gas is located between the two rectangular plates 14, that is, it will not mix with other unfiltered flue gas. After that, the filtered flue gas will be discharged to the outside of the box 11 through the exhaust pipe 13.

[0044] The upper rectangular plate 14 is provided with several U-shaped plates 22, and the several U-shaped plates 22 correspond one-to-one with several sleeves 20. The U-shaped plates 22 are provided with insertion tubes 23 with U-shaped cross sections corresponding to the upper opening of the sleeves 20. One end of the bag piece 3 passes through the upper opening of the sleeve 20 and is threadedly connected to the insertion tube 23. The U-shaped plates 22 are used to support the insertion tubes 23. One end of the bag piece 3 is threadedly connected to the insertion tubes 23 to prevent it from detaching from the sleeves 20.

[0045] Continue to refer to Figure 2 and Figure 3As shown, the filter bag 3 is used to filter the flue gas entering the sleeve 20. Specifically, the filter bag 3 includes a circular plate 30, a cylinder 31, an L-shaped ring 32, and a filter bag 33. The circular plate 30 is slidably disposed on the inner wall of the sleeve 20, and the cylinder 31 is disposed on the circular plate 30. The inner wall of the insertion cylinder 23 is provided with a bidirectional thread, and one end of the cylinder 31 is threadedly connected to the bidirectional thread in the corresponding insertion cylinder 23. That is, the circular plate 30 can rotate on the inner wall of the sleeve 20, and drive the cylinder 31 to rotate synchronously. The cylinder 31 limits the circular plate 30 in the sleeve 20 by being threadedly connected to the insertion cylinder 23. The rotation of the cylinder 31 can be limited in the insertion cylinder 23 by the threaded connection. Since the insertion cylinder 23 is provided with a bidirectional thread, if the cylinder 31 continues to rotate in the same direction, the cylinder 31 will move downward and eventually disengage from the corresponding insertion cylinder 23.

[0046] The L-shaped ring 32 is slidably disposed on the inner wall of the sleeve 20, with the bent end of the L-shaped ring 32 located outside the sleeve 20. A cloth bag 33 is disposed between the L-shaped ring 32 and the circular plate 30, which is tightly attached to the inner wall of the sleeve 20. The cylinder 31 can limit the cloth bag 33 and the L-shaped ring 32 inside the sleeve 20 through the circular plate 30. The L-shaped ring 32 is in contact with the bottom of the sleeve 20, meaning it cannot enter the sleeve 20. This allows the two sides of the cloth bag 33 to be limited by the circular plate 30 and the L-shaped ring 32, respectively, and tightened inside the sleeve 20. The flue gas enters the cloth bag 33 through the L-shaped ring 32, then passes through the outer wall of the cloth bag 33 and enters the box 11 between the rectangular plates 14 through the strip groove 21, while the dust will adhere to the inner wall of the cloth bag 33.

[0047] Reference Figure 4 and Figure 5 As shown, the interior of the housing 11 is also equipped with a flow guiding assembly 4 for guiding flue gas into the filter bag 33. Specifically, the flow guiding assembly 4 includes a telescopic plate 40, a sealing groove 41, a first sealing plate 42, and a second sealing plate 43. Several telescopic plates 40 are arranged on the inner walls of both sides of the housing 11. The fixed section of the telescopic plate 40 is fixed to the inner side wall of the housing 11, that is, the telescopic end of the telescopic plate 40 can retract when the rectangular plate 14 moves downward, avoiding interference with the movement range of the rectangular plate 14, so that the flue gas enters the housing 11. Afterwards, the telescopic plate 40 can guide the flue gas. During this process, some large dust particles in the flue gas will separate from the flue gas after touching the telescopic plate 40 and eventually fall to the bottom of the inner wall of the housing 11. The telescopic plate 40 can divide the flue gas into multiple groups and guide them to the corresponding filter bags 3, so that each filter bag 3 can filter the flue gas uniformly. When replacing them later, there is no need to check the aging degree of each filter bag 33 individually. They can be replaced directly, which saves time and avoids the waste of filter bags 33.

[0048] A sealing groove 41 communicating with the air inlet pipe 12 is provided on one side of the housing 11. A sealing plate 42 located in the sealing groove 41 is provided on one side of the lower rectangular plate 14. A sealing plate 43 corresponding to the air outlet pipe 13 is provided on one side of the upper rectangular plate 14. That is, when the two rectangular plates 14 descend synchronously, the lower rectangular plate 14 can drive the sealing plate 42 to slide in the sealing groove 41 and simultaneously seal the side of the air inlet pipe 12 located in the housing 11. The upper rectangular plate 14 simultaneously drives the sealing plate 43 to seal the side of the air outlet pipe 13 located in the housing 11.

[0049] It should be noted that after the flue gas enters the housing 11 through the inlet pipe 12, there is a certain gap between the telescopic plate 40 and the bottom of the housing 11. The flue gas will flow between the telescopic plates 40 and the bottom of the housing 11 through the gap, and then flow into the corresponding sleeve 20 under the guidance of the telescopic plates 40. The telescopic section of the telescopic plate 40 is in contact with the bottom of the rectangular plate 14. Therefore, when the rectangular plate 14 descends, it can synchronously drive the telescopic section of the telescopic plate 40 to contract. When the rectangular plate 14 rises, the telescopic section of the telescopic plate 40 will rise synchronously, thereby improving the flow of flue gas.

[0050] Continue to refer to Figure 3 , Figure 6 and Figure 7 As shown, a support plate 50 is provided between several support legs 10. The support plate 50 is provided with a replacement unit 5 for replacing the cloth bag part 3. Specifically, the replacement unit 5 includes a support plate 50, a replacement screw 51, a hexagonal block 52, a reset push spring 53, a hexagonal groove 54, and a cover plate 55. Several replacement screws 51 are provided on the support plate 50 by means of threaded connection, and several replacement screws 51 correspond one-to-one with several sleeves 20. That is, when the replacement screw 51 rotates on the support plate 50, it can move back and forth in the up and down direction.

[0051] A sliding groove is provided on the side of the replacement screw 51 near the housing 11. A hexagonal block 52 is slidably disposed in the sliding groove. The hexagonal block 52 is connected to the inner wall of the sliding groove by a reset push spring 53. The circular plate 30 is also provided with a hexagonal slot 54 for accommodating the hexagonal block 52 on the side facing the hexagonal block 52. The hexagonal block 52 can move up and down in the sliding groove. In the initial state, the reset push spring 53 always pushes the hexagonal block 52 to be located at the upper end of the sliding groove.

[0052] Several rectangular circular grooves are provided on the inner wall of the lower end of the housing 11, and each of the circular grooves corresponds to a replacement screw 51. A cover plate 55 is hinged to the inner diameter of the circular groove by a torsion spring to seal it. That is, when the replacement screw 51 moves upward, it will push the cover plate 55 in the circular groove to flip. Then the replacement screw 51 will be inserted into the cloth bag 33 through the circular groove. Then the hexagonal block 52 will be inserted into the hexagonal groove 54. At this time, the replacement screw 51 continues to rotate, which will drive the cylinder 31 to rotate through the circular plate 30. The cylinder 31 continues to move downward under the cooperation of the bidirectional thread until it is disengaged from the insertion cylinder 23.

[0053] During this process, the replacement screw 51 will continue to move upward, which is opposite to the downward movement trajectory of the circular plate 30. When the hexagonal block 52 contacts the bottom inner wall of the hexagonal groove 54, it will retract towards the sliding groove under the drive of the hexagonal groove 54 until the cylinder 31 disengages from the insertion cylinder 23. At this time, the replacement screw 51 will rotate in the opposite direction, thereby indirectly driving the bag component 3 to move downward, so that the bag component 3 disengages from the sleeve 20. Then, when the bottom of the bag component 3 contacts the lower inner wall of the box 11, it will remain inside the box 11, while the replacement screw 51 will disengage from the circular groove and move to the initial position. The cover plate 55 on the circular groove will re-seal the circular groove under the action of the corresponding torsion spring to prevent the gas in the box 11 from leaking through the circular groove.

[0054] When installing the new bag assembly 3, the operator places the bag assembly 3 onto the replacement screw 51, so that the upper end of the replacement screw 51 is inserted into the bag 33. Since the bag 33 is made of flexible material, the circular plate 30 and the L-shaped ring 32 will press the bag 33 together. The replacement screw 51 will then push the circular plate 30, indirectly driving the bag assembly 3 through the circular groove into the housing 11. After that, it will drive the cylinder 31 to be inserted into the corresponding insertion cylinder 23. Then the L-shaped ring 32 will contact the bottom of the sleeve 20, making the bag 33 taut. At this time, the replacement screw 51 will move downward to complete the installation of the bag assembly 3.

[0055] Reference Figure 8 and Figure 9As shown, the outer side of the housing 11 is also provided with a pushing unit 6 for pushing out the dust deposited inside; specifically, the pushing unit 6 includes a push plate 60, a receiving groove 61, a triangular plate 62, a swing plate 63, a collection box 64, a pushing motor 65, and a pushing screw 66. A rectangular groove is opened on one side of the housing 11, and the push plate 60 is slidably arranged in the rectangular groove. The push plate 60 has a receiving groove 61 for accommodating the fixed section of the telescopic plate 40, and one fixed section of the telescopic plate 40 is located in the receiving groove 61. A triangular plate 62 is provided at one end facing the inside of the box 11 and is attached to the bottom of the box 11. The receiving groove 61 is used to avoid the telescopic plate 40, so that the movement path of the push plate 60 is not blocked by the telescopic plate 40. The push plate 60 can also limit and guide itself through the sliding cooperation between the receiving groove 61 and the telescopic plate 40, so that it can move inside the box 11. When the push plate 60 moves, it can drive the triangular plate 62 to move simultaneously, and the triangular plate 62 can push the dust deposited inside the box 11 to move.

[0056] On the other side of the box 11, there is a swing groove corresponding to the rectangular groove. A swing plate 63 is hinged to the inner wall of the swing groove by a torsion spring. That is, the push plate 60 pushes the dust at the bottom of the box 11 to move to the position corresponding to the swing plate 63 through the triangular plate 62. At this time, the triangular plate 62 will first contact the inner side of the swing plate 63 and push the swing plate 63 to open. At this time, the dust in the box 11 can be discharged to the outside of the box 11 through the swing groove.

[0057] It should be noted that only when the rectangular plate 14 drives the bag component 3 to descend, at this time the sealing plate 1 42 and the sealing plate 2 43 have respectively sealed the air inlet pipe 12 and the air outlet pipe 13. Then the push plate 60 moves to push the dust out of the box 11 to prevent the leakage of unfiltered gas in the box 11. In addition, if the bag component 3 replaced by the replacement unit 5 is left on the inner wall of the box 11, the push plate 60 will also push the replaced bag component 3 and the dust out of the box 11 at the same time.

[0058] A collection box 64 is provided on the base plate 1. The opening of the collection box 64 corresponds to the swing groove. Dust and cloth bag 3 pushed out from the box 11 will enter the collection box 64 for collection, which is convenient for personnel to carry out subsequent processing. A push motor 65 is installed on one side of the box 11 through a motor base. A push screw 66 is installed on the main shaft of the push motor 65. One end of the push screw 66 passes through the corresponding push plate 60 and is located inside the box 11. The push screw 66 and the push plate 60 are threadedly connected. That is, the push motor 65 drives the push screw 66 to rotate. At this time, the push screw 66 will drive the push plate 60 to move back and forth in the box 11 through forward and reverse rotation.

[0059] Example 2: Refer to Figure 10 and Figure 11 As shown, based on Embodiment 1, in order to move the two rectangular plates 14 and rotate the lead screw 51 synchronously, a drive unit 7 is provided on one side of the support plate 50. Specifically, the drive unit 7 includes a sliding plate 70, a drive lead screw 71, a drive groove 72, a drive ring 73, a drive key 74, a gear ring 75, a drive motor 76, and a drive gear 77. The sliding groove is opened on one side of the housing 11, and a sliding plate 70 located in the sliding groove is provided on one side of the two rectangular plates 14. The drive lead screw 71 is rotatably provided on the inner wall of the sliding groove, and the drive lead screw 71 is threadedly connected to the sliding plate 70. That is, when the drive lead screw 71 rotates, it can move up and down in the sliding direction through the sliding plate 70 under the limit of the sliding groove. The sliding plate 70 will then drive the corresponding rectangular plate 14 to move up and down in the sliding direction.

[0060] The replacement lead screw 51 has a drive groove 72 on its outer side. Several drive rings 73 are rotatably arranged at the lower end of the support plate 50, and each drive ring 73 corresponds to a replacement lead screw 51. The inner diameter of the drive ring 73 is provided with a drive key 74 located in the corresponding drive groove 72. The drive rings 73 are connected by belt drive, that is, the drive rings 73 can rotate synchronously by belt drive. During the rotation, the corresponding drive lead screw 71 can be driven to rotate by the cooperation of the corresponding drive key 74 and drive groove 72. The drive lead screw 71 can then move up and down. The drive key 74 is slidably connected to the drive groove 72, that is, the drive key 74 will not interfere with the movement of the replacement lead screw 51.

[0061] One of the drive rings 73 has a gear ring 75 sleeved on its outer side. A drive motor 76 is mounted on the support plate 50 via a motor mount. The main shaft of the drive motor 76 is fitted with a drive gear 77 that meshes with the gear ring 75. The lower end of the drive screw 71 passes through the outer wall of the housing 11 and is connected to the drive gear 77 via gear transmission. That is, the drive motor 76 can drive the drive gear 77 to rotate. When the drive gear 77 rotates, it can synchronously drive the gear ring 75 and the drive screw 71 to rotate. Because the threads on the outer sides of the drive screw 71 and the replacement screw 51 are opposite, the moving directions of the rectangular plate 14 and the replacement screw 51 are opposite. Therefore, the replacement screw 51 can be inserted into the corresponding sleeve 20, and then rotated in the opposite direction under the drive of the drive gear 77. The rectangular plate 14 and the replacement screw 51 will then move to their initial positions.

[0062] During operation: First, the new filter bag 3 is placed on the replacement unit 5. The replacement unit 5, driven by the drive unit 7, brings the new filter bag 3 into the housing 11. At the same time, the filter unit 2 can also move relative to the replacement unit 5 under the drive of the drive unit 7. Finally, the filter bag 3 is installed in the sleeve 20 with the help of the replacement unit 5.

[0063] Step 2: The filter unit 2 can trap dust in the flue gas through the cloth bag 3 installed inside it. After filtration, the flue gas can be discharged outside the box 11 through the discharge pipe. When the flue gas is discharged into the box 11, it can also be evenly guided to the cloth bag 3 on each sleeve 20 through the flow guiding component 4.

[0064] Step 3: When it is time to replace the filter bag 3, the drive unit 7 drives the replacement unit 5 and the filter unit 2 to move in opposite directions. Then, the replacement unit 5 removes the used filter bag 3 from the filter unit 2, and then the new filter bag 3 is installed on the filter unit 2.

[0065] Step 4: By pushing unit 6, the dust at the bottom of box 11 and the replaced cloth bag 3 can be pushed into collection box 64 for collection and storage, avoiding direct manual contact.

[0066] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0067] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hot-dip galvanizing flue gas absorption and treatment device, comprising a base plate (1), supporting legs (10), and a housing (11), characterized in that: The base plate (1) is provided with several support legs (10) at the upper end, and a box (11) is provided at the upper end of the support legs (10). An air inlet pipe (12) is provided through one side of the box (11), and an air outlet pipe (13) corresponding to the air inlet pipe (12) is also provided through one side of the box (11). Two symmetrically distributed rectangular plates (14) are slidably arranged inside the box (11), and the two rectangular plates (14) separate the air inlet pipe (12) and the air outlet pipe (13). A filter unit (2) for filtering dust in the flue gas is provided between the rectangular plates (14). The filter unit (2) includes a sleeve (20) disposed between rectangular plates (14), and the sleeve (20) is open from top to bottom. Several strip grooves (21) are provided on the outside of the sleeve (20) along its axis. A cloth bag (3) is installed inside the sleeve (20) and is used to filter the flue gas inside the sleeve (20). The filter unit (2) further includes several U-shaped plates (22) set on the upper rectangular plate (14), and the several U-shaped plates (22) correspond one-to-one with several sleeves (20). The U-shaped plates (22) are provided with insertion tubes (23) with U-shaped cross-sections corresponding to the opening at the upper end of the sleeves (20). One end of the cloth bag (3) passes through the opening at the upper end of the sleeve (20) and is threadedly connected to the insertion tube (23). The bag component (3) includes a circular plate (30), a cylinder (31), an L-shaped ring (32), and a bag (33). The circular plate (30) is slidably disposed on the inner wall of the sleeve (20), the cylinder (31) is disposed on the circular plate (30), the inner wall of the insertion cylinder (23) is provided with a bidirectional thread, and one end of the cylinder (31) is threadedly connected to the bidirectional thread in the corresponding insertion cylinder (23). The L-shaped ring (32) is slidably disposed on the inner wall of the sleeve (20), and the bent end of the L-shaped ring (32) is located outside the sleeve (20). The bag (33) is provided between the L-shaped ring (32) and the circular plate (30) and is tightly attached to the inner wall of the sleeve (20). A support plate (50) is provided between several of the support legs (10). A replacement unit (5) for replacing the cloth bag (3) is provided on the support plate (50). The replacement unit (5) includes several replacement screws (51) that are connected by threads on the support plate (50). Each replacement screw (51) corresponds to a sleeve (20). A sliding groove is provided on the side of the replacement screw (51) near the box (11). A hexagonal block (52) is slidably arranged in the sliding groove. The hexagonal block (52) is connected to the inner wall of the sliding groove by a reset push spring (53). A hexagonal groove (54) for accommodating the hexagonal block (52) is also provided on the side of the circular plate (30) facing the hexagonal block (52).

2. The hot-dip galvanizing flue gas absorption and treatment device according to claim 1, characterized in that: The box (11) is also provided with a flow guide assembly (4) for guiding the flue gas into the cloth bag (33). The flow guide assembly (4) includes several telescopic plates (40) set on the inner walls of both sides of the box (11). The fixed section of the telescopic plate (40) is fixed on the inner wall of the box (11).

3. The hot-dip galvanizing flue gas absorption and treatment device according to claim 1, characterized in that: The box (11) has a sealing groove (41) that communicates with the air inlet pipe (12) on one side. A sealing plate (42) is provided on one side of the lower rectangular plate (14) and is located in the sealing groove (41). A sealing plate (43) is provided on one side of the upper rectangular plate (14) that corresponds to the air outlet pipe (13).

4. The hot-dip galvanizing flue gas absorption and treatment device according to claim 1, characterized in that: The inner wall of the lower end of the box (11) has several rectangular grooves, and each groove corresponds to a replacement screw (51). The inner diameter of the groove is hinged with a cover plate (55) to seal it by means of a torsion spring.

5. The hot-dip galvanizing flue gas absorption and treatment device according to claim 2, characterized in that: The outer side of the box (11) is also provided with a pushing unit (6) for pushing out the dust deposited inside it. The pushing unit (6) includes a rectangular groove on one side of the box (11), and a push plate (60) is slidably arranged in the rectangular groove. The push plate (60) is provided with a receiving groove (61) for accommodating the fixed section of the telescopic plate (40), and one side of the fixed section of the telescopic plate (40) is located in the receiving groove (61). A triangular plate (62) that is attached to the bottom of the box (11) is provided at one end of the push plate (60) facing the inner side of the box (11).

6. The hot-dip galvanizing flue gas absorption and treatment device according to claim 5, characterized in that: The other side of the box (11) is provided with a swing groove corresponding to the rectangular groove, and a swing plate (63) is hinged to the inner wall of the swing groove by a torsion spring.

7. The hot-dip galvanizing flue gas absorption and treatment device according to claim 6, characterized in that: A collection box (64) is provided on the base plate (1), and the opening of the collection box (64) corresponds to the swing groove.

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