Exhaust gas dust removal filter

Abstract

The present invention discloses an exhaust gas dust removal filter, which belongs to the technical field of separation and filtration, and includes a casing, an isolation plate, a plurality of filter units, a circulating movement mechanism, a flexible cover and an isolation chamber, wherein an air inlet and an air outlet are provided on the casing, a slag discharge port is provided at the bottom of the casing, an isolation plate is arranged in the casing and separates the air inlet and the air outlet, a circulation groove is provided on the isolation plate; the filter unit is arranged on the circulation groove; the circulating movement mechanism is used to drive the filter unit to circulate along the circulation groove; and a chamber door corresponding to the position of the isolation chamber is provided on the casing. The isolation chamber of the present invention can cover the filter unit when necessary, so that a single filter unit is isolated from the inner cavity of the casing between the air inlet and the isolation plate, thereby allowing the filter unit to be out of the filtering state, and the chamber door can be opened without stopping the machine to replace and repair the filter unit, which is convenient to use.

Description

Technical Field

[0001] The invention relates to the technical field of separation and filtration, and in particular to an exhaust gas dust removal filter. Background Art

[0002] Bag dust collector is a dust removal device that uses filter bags to filter dust-containing gas and separate dust from the gas. It is mainly used to capture fine, dry, non-fibrous dust, such as mineral dust, chemical dust, etc. Bag dust collectors are widely used in dust control in industries such as steel, cement, chemical, electricity, mining, building materials, and grain. At present, bag dust collectors generally have multiple bags fixed in the casing. If the bag is damaged, it is necessary to shut down the machine and disassemble the upper end of the dust collector as a whole before replacing the bag, which is inconvenient to use.

[0003] In view of the above-mentioned technical deficiencies, the object of the present invention is to provide an exhaust gas dust removal filter. Summary of the invention

[0004] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide an exhaust gas dust removal filter, which facilitates the replacement and maintenance of a single filter unit by providing an isolation chamber, a circulating movement mechanism, an isolation plate and multiple filter units.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides an exhaust gas dust removal filter, including a housing, an air inlet and an air outlet are provided on the housing, a slag discharge port is provided at the bottom of the housing, and further includes:

[0006] An isolation plate, which is arranged in the casing and separates the air inlet from the air outlet, and a circulation groove is provided on the isolation plate;

[0007] A plurality of filter units, wherein the filter units are arranged on the circulation tank, and the filter units include a filter bag frame and a filter bag sleeved on the filter bag frame;

[0008] A circulating movement mechanism, which is arranged in the housing between the isolation plate and the air outlet and is used to drive the filter unit to circulate along the circulation groove;

[0009] A flexible cover, which is arranged on the circulation groove and is used to cover the gaps between adjacent filter units and between the filter units and the circulation groove;

[0010] The isolation chamber is arranged in the inner cavity of the casing between the air inlet and the isolation plate. The isolation chamber includes two hinged cover shells. When the two cover shells are closed, a single filter unit can be isolated from the inner cavity. The casing is provided with a chamber door corresponding to the position of the isolation chamber.

[0011] Preferably, the filter unit further comprises a sliding sleeve, which is slidably installed in the circulation groove, and an upper retaining ring and a lower retaining ring are fixed on the sliding sleeve, and the upper retaining ring and the lower retaining ring are respectively located on the upper and lower sides of the isolation plate, and the filter bag holder is arranged on the sliding sleeve.

[0012] Preferably, the circulating movement mechanism comprises a track fixed on the isolation plate, the shape of the track is adapted to the circulation groove, a chain is arranged in the track, a connecting rod is fixed on the chain, and the connecting rod is fixedly connected to the upper retaining ring.

[0013] Preferably, a driving sprocket is rotatably mounted on the isolation plate, a slot is provided on the track, and the driving sprocket passes through the slot and engages with a chain in the track.

[0014] Preferably, the two cover shells are respectively a first cover shell and a second cover shell, a semi-annular cover is fixed to the top of the first cover shell and the second cover shell, and a chassis is fixed to the bottom of the first cover shell; when the first cover shell and the second cover shell cooperate to cover the filter unit, the two semi-annular covers are cooperated to be clamped on the sliding sleeve, and the chassis closes the bottom of the cavity surrounded by the first cover shell and the second cover shell.

[0015] Preferably, a rotating shaft is rotatably mounted on the chassis, a rotating block is fixed on the rotating shaft, a plurality of vertical rods are fixed on the rotating block, and bristles are fixed on the vertical rods.

[0016] Preferably, slide rails are fixed on both the first cover shell and the second cover shell, the slide rails on the first cover shell and the slide rails on the second cover shell can be butted together to form a ring, and the rotating block is slidably mounted on the slide rails.

[0017] Preferably, a groove is provided on the groove wall of the circulation groove, and corrugated folds are provided on the flexible cover. Both sides of the flexible cover are slidably installed in the groove, and a clearance hole for the sliding sleeve to pass through is provided on the flexible cover.

[0018] Preferably, the hinge shafts of the two cover shells are arranged on the isolation plate, a cylinder is fixed in the casing, the movable end of the cylinder is hinged to two connecting rods, and the ends of the two connecting rods away from the cylinder are hinged to the two cover shells respectively.

[0019] The beneficial effects of the present invention are as follows: an isolation plate is arranged in the casing and a circulation groove is opened on the isolation plate, the circulation moving mechanism can drive multiple filter units to move on the circulation groove, thereby changing the position of the filter unit, and the openable and closable isolation chamber can cover the filter unit when needed, so that a single filter unit is isolated from the inner cavity of the casing between the air inlet and the isolation plate, thereby allowing the filter unit to be out of the filtering state. At this time, the chamber door can be opened without stopping the machine, and the filter unit can be replaced and repaired, which is convenient to use; the bristles arranged in the isolation chamber can rotate with the rotation of the rotating shaft to brush and clean the filter unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A three-dimensional diagram of an exhaust gas dust removal filter provided in an embodiment of the present invention.

[0022] Figure 2 It is a cross-sectional view from a top view perspective of the present invention.

[0023] Figure 3 The cross-sectional view is from the front perspective when the cover of the present invention covers a filter unit.

[0024] Figure 4 It is a front view cross-sectional view of the present invention when the two covers are separated.

[0025] Figure 5 It is a stereoscopic diagram of the isolation plate, the circulating movement mechanism and the filter unit of the present invention.

[0026] Figure 6 It is a three-dimensional diagram of the isolation chamber of the present invention.

[0027] Figure 7 It is a three-dimensional diagram of the isolation chamber of the present invention when it is in an open state.

[0028] Figure 8 It is a three-dimensional diagram of the filter unit of the present invention.

[0029] Fig. 9 It is a schematic structural diagram of the sliding sleeve of the present invention.

[0030] Fig.10 It is a three-dimensional diagram of the filter bag frame of the present invention.

[0031] Description of reference numerals:

[0032] 1. Casing, 2. Air inlet, 3. Air outlet, 4. Slag discharge port, 5. Isolation plate, 6. Circulation trough, 7. Filter unit, 8. Filter bag holder, 9. Filter bag, 10. Flexible cover, 11. First cover shell, 12. Second cover shell, 13. Bin door, 14. Sliding sleeve, 15. Upper retaining ring, 16. Lower retaining ring, 17. Track, 18. Connecting rod, 19. Driving sprocket, 20. Semi-ring cover, 21. Chassis, 22. Rotating shaft, 23. Rotating block, 24. Vertical rod, 25. Slide rail, 26. Articulated shaft, 27. Cylinder, 28. Connecting rod. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Embodiment 1:

[0035] like Figures 1 to 10 As shown, the first embodiment of the present invention provides an exhaust gas dust removal filter, including a housing 1, a gas outlet 3 is provided on the top of the housing 1, a gas inlet 2 is provided on the side wall, a slag discharge port 4 is provided at the bottom of the housing 1, and the slag discharge port 4 is provided with an end cover. An isolation plate 5 is also fixed in the housing 1, such as Figure 3 As shown, the isolation plate 5 separates the air inlet 2 and the air outlet 3 of the housing 1, and the isolation plate 5, the air inlet 2 and the housing 1 form an inner cavity. The isolation plate 5 is provided with a circulation groove 6, as shown in FIG. Figure 2 As shown, the circulation groove 6 is a circulation shape connected end to end, and a plurality of filter units 7 are slidably installed in the circulation groove 6. The filter unit 7 can be circulated and moved along the circulation groove 6, thereby changing the position of the filter unit 7. An isolation chamber is provided below the isolation plate 5, and the isolation chamber can cover a single filter unit 7, so that the filter unit 7 is isolated from the inner cavity of the housing 1 between the air inlet 2 and the isolation plate 5, and a chamber door 13 is also provided on the top of the housing 1, so that when a filter unit 7 is damaged, it can be moved along the circulation groove 6 to the position where it cooperates with the isolation chamber. When the isolation chamber covers the filter unit 7, the chamber door 13 can be opened, and the damaged filter unit 7 can be taken out of the isolation chamber from the chamber door 13 without affecting the filtering function of the present invention, so the filter unit 7 can be replaced without stopping the machine.

[0036] Specifically, Figures 8 to 10 As shown, the filter unit 7 of the present invention includes a sliding sleeve 14, a filter bag 9 and a filter bag frame 8, wherein the filter bag 9 is a cloth bag, the filter bag 9 is sleeved on the filter bag frame 8, and the filter bag frame 8 can be inserted into the sliding sleeve 14 to fix the filter bag 9 in cooperation with the sliding sleeve 14.

[0037] Combination Figure 2 , Figure 3 and Fig. 9It can be seen that the sleeve 14 is located in the circulation groove 6, and an upper retaining ring 15 and a lower retaining ring 16 are fixed on the sleeve 14, and the upper retaining ring 15 and the lower retaining ring 16 are respectively located on the upper side and the lower side of the isolation plate 5, so that the sleeve 14 is slidably installed in the circulation groove 6 under the limit of the upper retaining ring 15 and the lower retaining ring 16. Considering that the circulation groove 6 has multiple turns and there are gaps between adjacent sleeves 14, in order to prevent the gas entering the housing 1 from the air inlet 2 from directly passing through the gap and being discharged from the air outlet 3, the present invention is provided with a flexible cover 10. Figure 2 and Figure 5 As shown, the flexible cover 10 has corrugated folds, so the flexible cover 10 has a certain stretching and contracting ability. A groove is provided on the groove wall of the circulation groove 6, and both sides of the flexible cover 10 are slidably installed in the groove. The flexible cover 10 can be made of rubber, and a clearance hole for the sliding sleeve 14 to pass through is provided on the flexible cover 10. In this way, the flexible cover 10 can be sleeved on the sliding sleeve 14 to block the space between adjacent filter units 7, and can also block the gap between the sliding sleeve 14 and the circulation groove 6, so that the gas to be filtered can be reduced or prevented from directly passing through the circulation groove 6.

[0038] like Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the isolation chamber of the present invention is arranged in the inner cavity of the casing 1 between the air inlet 2 and the isolation plate 5. The isolation chamber includes two hinged covers, namely the first cover 11 and the second cover 12, and the hinge shaft 26 of the first cover 11 and the second cover 12 is arranged on the isolation plate 5. Among them, the tops of the first cover 11 and the second cover 12 are fixed with semi-annular covers 20, and the bottom of the first cover 11 is fixed with a chassis 21. In order to facilitate the control of the opening and closing of the isolation chamber, the first cover 11 and the second cover 12 rotate around the hinge shaft 26. In the present invention, a cylinder 27 is fixed in the casing 1, and the movable end of the cylinder 27 is hinged with two connecting rods 28, and the ends of the two connecting rods 28 away from the cylinder 27 are respectively hinged to the first cover 11 and the second cover 12. The cylinder 27 is perpendicular to the hinge shaft 26. In this way, when the cylinder 27 is extended or retracted, the connecting rod 28 can drive the first cover shell 11 and the second cover shell 12 to rotate around the hinge shaft 26, thereby controlling the opening and closing of the isolation chamber.

[0039] When the first cover 11 and the second cover 12 are in the open state, that is, when the isolation chamber is opened, Figure 4 As shown, the isolation compartment can make way for the filter unit 7 without affecting the movement of the filter unit 7 on the circulation tank 6.

[0040] When the first cover shell 11 and the second cover shell 12 are docked under the action of the cylinder 27, that is, when the isolation chamber is closed, the two semi-ring covers 20 are clamped on the sliding sleeve 14, and the bottom plate 21 closes the bottom of the cavity surrounded by the first cover shell 11 and the second cover shell 12, so that the filter bag 9 on the sliding sleeve 14 is covered in the isolation chamber and isolated from the inner cavity of the casing 1 between the air inlet 2 and the isolation plate 5, that is, the unfiltered gas will not enter the isolation chamber, so that the filter bag 9 is out of the filtering state. At this time, open the door 13, remove the filter bag frame 8 and the filter bag 9 from above the filter bag 9, and install a new filter bag 9 into the sliding sleeve 14 to complete the replacement of the filter bag 9.

[0041] During operation, the air outlet 3 is connected to a negative pressure fan. Therefore, although the cavity between the filter bag 9 and the air outlet 3 is connected to the outside through the door 13 when the door 13 is opened, the filtered gas will basically not escape from the door 13 due to the negative pressure in this cavity. Even if there is leakage, since it is filtered gas, it will not pollute the outside air.

[0042] Embodiment 2:

[0043] On the basis of the first embodiment, in order to drive the filter unit 7 to move on the circulation tank 6, as shown in FIG. Figure 2 and Figure 5 As shown, the present invention is provided with a circulating moving mechanism, which specifically includes a track 17 fixed on the isolation plate 5, and the shape of the track 17 is adapted to the circulation groove 6. A driving sprocket 19 is rotatably installed on the isolation plate 5, and the driving sprocket 19 can be driven by a motor. A chain is arranged in the track 17, and a notch is provided on the track 17 near the driving sprocket 19. The driving sprocket 19 passes through the notch and engages with the chain in the track 17. Therefore, when the driving sprocket 19 rotates, the chain can be driven to move in the track 17, that is, to move along the circulation groove 6, and a connecting rod 18 is fixed on the chain, and the connecting rod 18 is fixedly connected to the upper retaining ring 15. Therefore, when the chain moves, the upper retaining ring 15 can be dragged to move, so that the filter unit 7 can move along the circulation groove 6. It should be noted that the filter unit 7 only needs to be moved when the filter bag 9 needs to be cleaned and replaced.

[0044] Embodiment three:

[0045] On the basis of the first and second embodiments, the present invention sets a dust cleaning mechanism in the isolation chamber, which can clean the isolated filter bag 9. Specifically, the dust cleaning mechanism includes a rotating shaft 22 rotatably mounted on the chassis 21, a rotating block 23 is fixed on the rotating shaft 22, and a plurality of vertical rods 24 are fixed on the rotating block 23, and bristles are fixed on the vertical rods 24. The rotating shaft 22 can be driven to rotate by a motor, so that when the motor is working, the rotating block 23 is driven to rotate, and then the bristles are rotated. When the filter bag 9 is isolated in the isolation chamber, the rotating bristles can clean the dust accumulated on the surface of the filter bag 9, and the airflow to be filtered during the cleaning process will not be blown into the isolation chamber, thereby preventing dust from being lifted by the airflow.

[0046] In order to increase the stability of the rotating block 23 during rotation, the present invention has slide rails 25 fixed on the first cover shell 11 and the second cover shell 12, and when the first cover shell 11 and the second cover shell 12 are docked, the slide rails 25 on the first cover shell 11 and the slide rails 25 on the second cover shell 12 can be docked into a ring, and the rotating block 23 can slide on the slide rails 25, so the slide rails 25 can increase the stability of the rotating block 23 during rotation.

[0047] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An exhaust gas dust removal filter, comprising a housing (1), an air inlet (2) and an air outlet (3) being provided on the housing (1), and a slag discharge port (4) being provided at the bottom of the housing (1), characterized in that: Also includes: an isolation plate (5), the isolation plate (5) being arranged in the housing (1) and separating the air inlet (2) from the air outlet (3), and a circulation groove (6) being provided on the isolation plate (5); A plurality of filter units (7), wherein the filter units (7) are arranged on the circulation tank (6), and the filter units (7) comprise a filter bag frame (8) and a filter bag (9) sleeved on the filter bag frame (8); A circulating movement mechanism, the circulating movement mechanism being arranged in the housing (1) between the isolation plate (5) and the air outlet (3), and being used to drive the filter unit (7) to move in a circulating manner along the circulating groove (6); A flexible cover (10), the flexible cover (10) being arranged on the circulation groove (6) and used for shielding the gaps between adjacent filter units (7) and between the filter units (7) and the circulation groove (6); An isolation chamber, the isolation chamber being arranged in the inner cavity of the casing (1) between the air inlet (2) and the isolation plate (5), the isolation chamber comprising two hinged cover shells, the two cover shells being able to isolate a single filter unit (7) from the inner cavity when closed, the casing (1) being provided with a chamber door (13) corresponding to the position of the isolation chamber; The two cover shells are respectively a first cover shell (11) and a second cover shell (12); a semi-annular cover (20) is fixed to the top of each of the first cover shell (11) and the second cover shell (12); a bottom plate (21) is fixed to the bottom of the first cover shell (11); when the first cover shell (11) and the second cover shell (12) cooperate to cover the filter unit (7), the two semi-annular covers (20) cooperate to be clamped on the sliding sleeve (14), and the bottom plate (21) closes the bottom of the cavity surrounded by the first cover shell (11) and the second cover shell (12); A rotating shaft (22) is rotatably mounted on the chassis (21), a rotating block (23) is fixed on the rotating shaft (22), a plurality of vertical rods (24) are fixed on the rotating block (23), and bristles are fixed on the vertical rods (24); Slide rails (25) are fixed on both the first cover shell (11) and the second cover shell (12); the slide rails (25) on the first cover shell (11) and the slide rails (25) on the second cover shell (12) can be butted together to form a ring; and the rotating block (23) is slidably mounted on the slide rails (25).

2. An exhaust gas dust removal filter as claimed in claim 1, characterized in that: The filter unit (7) further comprises a sliding sleeve (14), the sliding sleeve (14) being slidably mounted in the circulation groove (6), an upper retaining ring (15) and a lower retaining ring (16) being fixed to the sliding sleeve (14), the upper retaining ring (15) and the lower retaining ring (16) being respectively located on the upper and lower sides of the isolation plate (5), and the filter bag holder (8) being arranged on the sliding sleeve (14).

3. An exhaust gas dust removal filter as claimed in claim 2, characterized in that: The circulating movement mechanism comprises a track (17) fixed on the isolation plate (5), the shape of the track (17) being adapted to the circulating groove (6), a chain being arranged in the track (17), a connecting rod (18) being fixed on the chain, and the connecting rod (18) being fixedly connected to the upper retaining ring (15).

4. An exhaust gas dust removal filter as claimed in claim 3, characterized in that: A driving sprocket (19) is rotatably mounted on the isolation plate (5), a slot is provided on the track (17), and the driving sprocket (19) passes through the slot and meshes with a chain in the track (17).

5. An exhaust gas dust removal filter as claimed in claim 2, characterized in that: A groove is provided on the groove wall of the circulation groove (6), and the flexible cover (10) is provided with corrugated folds. Both sides of the flexible cover (10) are slidably mounted in the groove, and a clearance hole for the sliding sleeve (14) to pass through is provided on the flexible cover (10).

6. An exhaust gas dust removal filter as claimed in claim 1, characterized in that: The hinge shafts (26) of the two cover shells are arranged on the isolation plate (5), a cylinder (27) is fixed in the housing (1), the movable end of the cylinder (27) is hinged with two connecting rods (28), and the ends of the two connecting rods (28) away from the cylinder (27) are respectively hinged to the two cover shells.

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