Cloth bag dust removal equipment for powder spraying workshop

Abstract

The invention relates to the technical field of bag-type dust removers, in particular to bag-type dust removal equipment for a powder spraying workshop, which comprises an upper box body, a middle box body and a dust hopper which are sequentially connected, a plurality of bag frames are arranged in the middle box body through a perforated plate, and the perforated plate is provided with a plurality of perforated holes for the bag frames to penetrate through. The middle box body is supported on the box body support, the dust hopper lifting mechanism is connected with the dust hopper, the bag opening positioning plate is arranged in the middle box body, the bag opening positioning plate is provided with a plurality of bag passing holes for the cloth bag frame to pass through, a bag opening fixing mechanism is arranged around each bag passing hole, and the bag opening fixing mechanism is connected with the bag opening positioning plate. The middle box body and the dust hopper are separated and in butt joint through the dust hopper lifting mechanism, so that the interior of the middle box body is conveniently observed and maintained, the bag opening positioning plate is driven by the bag opening lifting mechanism to ascend and descend, a cloth bag can ascend and descend along the cloth bag frame, and after the dust hopper is separated from the middle box body, the cloth bag is conveniently replaced.

Description

Technical Field

[0001] The invention relates to the technical field of bag dust collectors, in particular to bag dust removal equipment for a powder spraying workshop. Background Art

[0002] The bag filter usually includes an upper box with a dust cleaning mechanism, a middle box with bags and a bag frame, and an ash hopper with an ash discharge valve. Among them, the dust bag is the heart of the bag filter, generally called a dust bag or a dust filter bag. The dust bag is a key part of the operation of the bag filter. Usually, the cylindrical filter bag is vertically suspended in the dust collector. Although the dust cleaning mechanism can remove dust from the dust bag, it is still necessary to replace the dust bag regularly.

[0003] The announcement number CN116272156B is a dust bag cage frame that is easy to replace the bag, which includes a first connecting seat and a second connecting seat, the first connecting seat and the second connecting seat are connected by a folding mechanism, the first connecting seat is provided with a fixing mechanism for fixing the bag, and the second connecting seat is provided with an opening mechanism for opening the bag. The dust bag cage frame that is easy to replace the bag can be folded by providing a folding mechanism to reduce its length, which is convenient for the cage frame to be disassembled and assembled in the flower plate hole, and the opening end of the dust bag can be fixed on the cage frame by providing a fixing mechanism, so that the bag can be disassembled and assembled together with the cage frame, thereby improving the disassembly and assembly efficiency. At the same time, it is also unnecessary to install an elastic expansion ring in the bag, thereby reducing the production cost of the bag and facilitating the storage of the bag, as well as subsequent cleaning and recycling.

[0004] The above technical solution still requires taking out the bag cage frame before removing the bag. Although the bag cage frame can be folded for easy removal, the complex structure of the thick bag cage frame increases the weight of the bag cage frame. In addition, the staff still needs to climb to the top of the dust removal equipment and disassemble the upper box before replacing the bag, which is still inconvenient. Summary of the invention

[0005] In order to make up for the above shortcomings, the present invention provides a bag dust removal device for a powder spraying workshop to solve the problem of inconvenience in bag replacement mentioned in the above background technology.

[0006] The technical solution of the present invention is:

[0007] A bag dust removal device for a powder spraying workshop, comprising an upper box body, a middle box body and an ash hopper connected in sequence, an exhaust port is arranged on the side of the upper box body, a plurality of bag frames are arranged in the middle box body through a perforated plate, the perforated plate is provided with a plurality of perforated holes for the bag frames to pass through, an air inlet is arranged on the side of the middle box body, and further comprising a box body bracket, an ash hopper lifting mechanism, a bag opening positioning plate and a bag opening lifting mechanism, the middle box body is supported on the box body bracket, the ash hopper lifting mechanism is connected to the ash hopper, and drives the ash hopper to dock and separate with the middle box body in a lifting manner, the bag opening positioning plate is arranged in the middle box body, and is driven to lift and lower by the bag opening lifting mechanism;

[0008] The bag opening positioning plate is provided with a plurality of bag passing holes for the cloth bag frame to pass through, and a bag opening fixing mechanism is provided around each of the bag passing holes. The bag opening positioning plate fixes the bag opening of the cloth bag through the bag opening fixing mechanism, so that a plurality of cloth bags can be mounted on the cloth bag frame as the bag opening positioning plate rises.

[0009] Preferably, a supporting platform is provided on the top of the ash hopper, and the supporting platform is provided with an ash dropping hole.

[0010] Preferably, the box support is composed of four columns, and two columns are arranged at intervals on both sides of the middle box.

[0011] Preferably, the ash hopper lifting mechanism includes a orifice plate and a hydraulic cylinder, the orifice plate is slidably sleeved on a column, the side of the ash hopper is connected to the orifice plate, and the hydraulic cylinder is fixedly arranged on the column and connected to the orifice plate.

[0012] Preferably, the bag mouth lifting mechanism includes a winch, a steel cable and a fixed pulley, the winch is arranged on the outer wall of the middle box body through the side box body, the perforated plate and the side wall of the upper box body are provided with through holes for the steel cable to pass through, the fixed pulley is rotatably arranged on the inner wall of the upper box body, one end of the steel cable is connected to the bag mouth positioning plate, and the other end bypasses the fixed pulley and is connected to the winch, and the winch and fixed pulley are arranged on both sides of the middle box body.

[0013] Preferably, the bag opening fixing mechanism comprises a movable connecting rod, an inner buckle plate, a top plate, a sliding pin, a transmission rod and a locking assembly, one end of the top plate is connected to the top end of the inner buckle plate, both sides of the top plate are rotatably connected to a pair of movable connecting rods, the two ends of the movable connecting rods are rotatably connected to the top plate and the bag opening positioning plate respectively, and the movable connecting rods on the same side and both sides are parallel to each other;

[0014] The pocket opening positioning plate is provided with a plurality of guide holes around the pocket hole, and the transmission rod passes through the guide holes and is connected to a locking assembly provided on the pocket opening positioning plate;

[0015] The top plate is provided with a strip hole along the radial direction of the bag hole, and the hole walls on both sides of the strip hole are provided with strip grooves, and the two ends of the sliding pin are respectively slidably arranged in the strip grooves on both sides, and the transmission rod is connected to the sliding pin;

[0016] The locking assembly lowers the top plate by pulling the top rod downward, and moves the top end of the movable connecting rod away from the inner buckle plate, so that the inner buckle plate fastens the bag mouth to the wall of the bag hole.

[0017] Preferably, the locking assembly includes an annular enclosure, a linkage slip ring, a fixed ring and a tension spring. The annular enclosure is arranged at the bottom of the bag mouth positioning plate, and the inner diameter of the annular enclosure is not less than the aperture of the bag hole. The linkage slip ring is slidably sleeved on the annular enclosure and connected to a plurality of transmission rods. The fixed ring is fixedly sleeved on the annular enclosure and located below the linkage slip ring. The linkage slip ring and the fixed ring are connected by a plurality of tension springs.

[0018] Preferably, the bag frame comprises a lifting ring, vertical ribs, annular ribs, a bag bottom plate and oblique ribs, a plurality of the vertical ribs are arranged around the axis of the bag bottom plate, a plurality of the vertical ribs are connected by a plurality of annular ribs arranged on the inner side thereof, the top ends of the plurality of the vertical ribs are connected by a lifting ring, and the lower ends of the vertical ribs are connected to the bag bottom plate by inclined oblique ribs;

[0019] The outer diameter of the hoisting ring is larger than the diameter of the hole, so that the bag frame can be hoisted on the hole plate through the hoisting ring;

[0020] The vertical ribs are located between adjacent inner gusset plates, i.e., adjacent top plates, and the diameter of the bag bottom plate and the outer diameter of the annular ribs are both smaller than the diameter of the circle where the multiple inner gusset plates are located, so that the inner gusset plates and the top plate can be lifted and lowered along the bag frame.

[0021] Preferably, a plurality of recesses are provided around each of the flower holes, and the recesses are aligned with the top plate and the inner buckle plate of the bag mouth fixing mechanism. The recesses are used for the top plate and the inner buckle plate to enter so that the bag mouth positioning plate fits with the flower hole plate, thereby making the flower hole dock with the bag hole.

[0022] Preferably, an annular groove penetrating the bottom is provided on the inner wall of the annular enclosure, an elastic protective rubber ring is provided in the annular groove, the axial length of the protective rubber ring is greater than the axial length of the annular groove, and the inner diameter of the protective rubber ring is not greater than the inner diameter of the annular enclosure.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] Firstly, the present invention separates and docks the middle box body and the ash hopper through the ash hopper lifting mechanism, so as to facilitate observation, maintenance and cleaning of the interior of the middle box body.

[0025] Secondly, the present invention drives the bag mouth positioning plate to rise and fall through the bag mouth lifting mechanism, and the bag mouth positioning plate is provided with a bag mouth fixing mechanism for fixing the bag mouth of the cloth bag, so that the cloth bag can be lifted and lowered along the cloth bag frame. When the ash hopper is separated from the middle box body, it is convenient to replace the cloth bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the bag dust removal device of the present invention;

[0027] Figure 2 For the present invention Figure 1 The main view;

[0028] Figure 3 It is a structural schematic diagram of the middle box of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the flower hole plate, cloth bag frame and bag opening positioning plate of the present invention;

[0030] Figure 5 It is a structural schematic diagram of the cloth bag frame of the present invention;

[0031] Figure 6 It is a structural schematic diagram of the bag opening fixing mechanism of the present invention;

[0032] Figure 7 It is a schematic structural diagram of the top plate of the present invention;

[0033] Figure 8 It is a structural schematic diagram of the strip groove of the present invention;

[0034] Fig. 9 It is a structural schematic diagram of the flower hole plate of the present invention;

[0035] Fig.10 It is a structural schematic diagram of the bag opening positioning plate of the present invention;

[0036] Fig.11 It is a structural schematic diagram of the hoist of the present invention;

[0037] Fig.12 A bottom view of the perforated plate of the present invention;

[0038] Fig.13 It is a cross-sectional view of the annular enclosure plate and the protective rubber ring of the present invention.

[0039] In the figure:

[0040] 1. Upper box; 2. Middle box; 3. Ash hopper; 4. Exhaust port; 5. Perforated plate; 6. Bag frame; 7. Perforated hole; 8. Air inlet; 9. Box support; 10. Ash hopper lifting mechanism; 11. Bag opening positioning plate; 12. Bag opening lifting mechanism; 13. Bag passing hole; 14. Bag opening fixing mechanism; 15. Support platform; 16. Ash drop hole; 17. Side box; 18. Guide hole; 19. Strip hole; 20. Strip groove; 21. Sinking trough; 22. Annular groove; 23. Protective rubber ring;

[0041] 601, lifting ring; 602, vertical ribs; 603, annular ribs; 604, bag bottom plate; 605, oblique ribs;

[0042] 1001, orifice plate; 1002, hydraulic cylinder;

[0043] 1201. winch; 1202. steel cable; 1203. fixed pulley;

[0044] 1401. movable connecting rod; 1402. inner buckle plate; 1403. top plate; 1404. sliding pin; 1405. transmission rod; 1406. annular enclosure; 1407. linkage sliding ring; 1408. fixing ring; 1409. tension spring. DETAILED DESCRIPTION

[0045] 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.

[0046] See also Figure 1-13 The present invention describes the above technical solution in detail through the following embodiments:

[0047] A bag dust removal device for a powder spraying workshop comprises an upper box body 1, a middle box body 2 and an ash hopper 3 which are connected in sequence, an exhaust port 4 is arranged on the side of the upper box body 1, a plurality of bag frames 6 are arranged in the middle box body 2 through a perforated plate 5, the perforated plate 5 is provided with a plurality of perforated holes 7 for the bag frames 6 to pass through, an air inlet 8 is arranged on the side of the middle box body 2, and further comprises a box body support 9, an ash hopper lifting mechanism 10, a bag opening positioning plate 11 and a bag opening lifting mechanism 12, the middle box body 2 is supported on the box body support 9, the ash hopper lifting mechanism 10 is connected to the ash hopper 3, and drives the ash hopper 3 to dock and separate with the middle box body 2 in a lifting manner, the bag opening positioning plate 11 is arranged in the middle box body 2, and is driven to lift by the bag opening lifting mechanism 12;

[0048] The bag opening positioning plate 11 is provided with a plurality of bag passing holes 13 for the cloth bag frame 6 to pass through, and a bag opening fixing mechanism 14 is provided around each bag passing hole 13. The bag opening positioning plate 11 fixes the bag opening of the cloth bag through the bag opening fixing mechanism 14, so that a plurality of cloth bags can be mounted on the cloth bag frame 6 as the bag opening positioning plate 11 rises.

[0049] Specifically, when the bag needs to be replaced, the ash hopper lifting mechanism 10 drives the ash hopper 3 to descend, so that the ash hopper 3 is separated from the middle box body 2, and the staff enters the ash hopper 3 from the area between the ash hopper 3 and the middle box body 2. At the same time, the bag mouth lifting mechanism 12 drives the bag mouth positioning plate 11 to descend, and then the bag mouth fixing mechanism 14 loosens the bag mouth of the bag, so that the bag falls. When the bag is removed, the staff passes the bag mouth of the new bag through the bag hole 13 and fixes the bag mouth of the new bag through the bag mouth fixing mechanism 14. When the bag mouths of all new bags are fixed, the bag mouth lifting mechanism 12 drives the bag mouth positioning plate 11 upward until the bag is gradually set on the bag frame 6, thereby completing the replacement of the bag.

[0050] When the interior of the centering box 2 needs to be observed, maintained, and cleaned, the bag opening positioning plate 11 does not need to be lowered, and the ash hopper lifting mechanism 10 can drive the ash hopper 3 to descend.

[0051] It should be noted that when installing the cloth bag, the staff lifts and raises the bag opening from the outside of the cloth bag to make it reach the bag opening fixing mechanism 14. The staff can also roll the bag body below the bag opening upward into the bag opening, so that the bag opening can be made to contact the wall of the bag hole 13 from the inside of the bag opening, so that the bag opening can be fixed by the bag opening fixing mechanism 14.

[0052] The present invention separates and docks the middle box body 2 and the ash hopper 3 through the ash hopper lifting mechanism 10, so as to facilitate observation, maintenance and cleaning of the interior of the middle box body 2, and drives the bag mouth positioning plate 11 to be lifted and lowered through the bag mouth lifting mechanism 12. The bag mouth positioning plate 11 is provided with a bag mouth fixing mechanism 14 for fixing the bag mouth, so that the cloth bag can be lifted and lowered along the cloth bag frame 6, so as to facilitate the replacement of the cloth bag.

[0053] It is supplemented that the bag dust removal equipment usually also includes a pulse cleaning mechanism arranged on the upper box body 1. The pulse cleaning mechanism is a conventional technical means in this field and has nothing to do with the invention point of this application, so it is not written in.

[0054] To further facilitate the staff to replace the bag, a support platform 15 is provided on the top of the ash hopper 3. The support platform 15 is provided with an ash drop hole 16. When the ash hopper 3 is separated from the middle box 2, the operator can replace the bag on the support platform 15.

[0055] Among them, the box support 9 is composed of four columns, and two columns are arranged at intervals on both sides of the middle box 2, and the ash hopper lifting mechanism 10 includes a hole plate 1001 and a hydraulic cylinder 1002, the hole plate 1001 is slidably sleeved on the column, the side of the ash hopper 3 is connected to the hole plate 1001, and the hydraulic cylinder 1002 is fixedly arranged on the column and connected to the hole plate 1001, that is, the hole plate 1001 is driven to rise and fall by the hydraulic cylinder 1002, so that the ash hopper 3 is connected to and separated from the middle box 2 under the drive of multiple hole plates 1001. In addition, the hole plate 1001 is slidably matched with the column on the middle box 2 to ensure that the ash hopper 3 can accurately connect with the middle box 2.

[0056] Among them, the bag mouth lifting mechanism 12 includes a winch 1201, a steel cable 1202 and a fixed pulley 1203. The winch 1201 is arranged on the outer wall of the middle box body 2 through the side box body 17. The perforated plate 5 and the side wall of the upper box body 1 are provided with through holes for the steel cable 1202 to pass through. The fixed pulley 1203 is rotatably arranged on the inner wall of the upper box body 1. One end of the steel cable 1202 is connected to the bag mouth positioning plate 11, and the other end bypasses the fixed pulley 1203 and is connected to the winch 1201, and the winch 1201 and the fixed pulley 1203 are arranged on both sides of the middle box body 2.

[0057] Compared with driving the bag mouth positioning plate 11 to rise and fall by means of a screw, a hydraulic cylinder 1002, a pneumatic cylinder, etc., the winch 1201 drives the bag mouth positioning plate 11 to rise and fall through a steel cable 1202, thereby avoiding the need for driving components to be arranged in the middle box body 2, thereby helping to extend the service life of the bag mouth lifting mechanism 12, and only through holes need to be opened on the perforated plate 5 and the upper box body 1, thereby ensuring the sealing of the middle box body 2.

[0058] The bag opening fixing mechanism 14 includes a movable link 1401, an inner buckle plate 1402, a top plate 1403, a sliding pin 1404, a transmission rod 1405 and a locking assembly. One end of the top plate 1403 is connected to the top end of the inner buckle plate 1402. Both sides of the top plate 1403 are rotatably connected with a pair of movable links 1401. Both ends of the movable link 1401 are rotatably connected with the top plate 1403 and the bag opening positioning plate 11, respectively. The movable links 1401 on the same side and both sides are parallel to each other.

[0059] A plurality of guide holes 18 are provided on the bag opening positioning plate 11 around the bag hole 13, and the transmission rod 1405 passes through the guide holes 18 and is connected to a locking assembly provided on the bag opening positioning plate 11;

[0060] The top plate 1403 is provided with a strip hole 19 along the radial direction of the bag hole 13, and the hole walls on both sides of the strip hole 19 are provided with strip grooves 20, and the two ends of the sliding pin 1404 are respectively slidably arranged in the strip grooves 20 on both sides, and the transmission rod 1405 is connected to the sliding pin 1404;

[0061] The locking assembly lowers the top plate 1403 by pulling the top rod downward, and moves the top end of the movable link 1401 away from the inner buckle plate 1402, so that the inner buckle plate 1402 fastens the bag mouth to the wall of the bag hole 13.

[0062] Specifically, since the upper end of the movable link 1401 is inclined in a direction away from the inner buckle plate 1402, when the locking assembly pulls the top plate 1403 downward, the top plate 1403 moves downward and away from the inner buckle plate 1402, so that the inner buckle plate 1402 moves downward and approaches the hole wall of the bag hole 13, so that the inner buckle plate 1402 can fasten the bag mouth between the inner buckle plate 1402 and the hole wall of the bag hole 13 to the hole wall of the bag hole 13. The role of the sliding pin 1404, the strip hole 19 and the strip groove 20 is to connect the transmission rod 1405 to the top plate 1403, and the top plate 1403 can reciprocate along the radial direction of the bag hole 13 without being restricted by the transmission rod 1405.

[0063] In addition, a plurality of vertically distributed grooves are provided on one side of the inner buckle plate 1402 close to the top plate 1403, so as to facilitate the inner buckle plate 1402 to fasten the bag opening and prevent the bag opening from sliding downward.

[0064] Among them, the locking assembly includes an annular enclosure 1406, a linkage slip ring 1407, a fixed ring 1408 and a tension spring 1409. The annular enclosure 1406 is arranged at the bottom of the bag mouth positioning plate 11, and the inner diameter of the annular enclosure 1406 is not less than the aperture of the bag hole 13. The linkage slip ring 1407 is slidably sleeved on the annular enclosure 1406 and is connected to multiple transmission rods 1405. The fixed ring 1408 is fixedly sleeved on the annular enclosure 1406 and is located below the linkage slip ring 1407. The linkage slip ring 1407 and the fixed ring 1408 are connected by multiple tension springs 1409.

[0065] The lower end of the tension spring 1409 is fixed by the fixing ring 1408 at the lower end of the annular enclosure 1406, and the upper end of the tension spring 1409 is connected to the sliding linkage slip ring 1407, so that the multiple tension springs 1409 pull the multiple transmission rods 1405 downward through the linkage slip ring 1407, so that the multiple inner buckle plates 1402 synchronously buckle the bag mouth. When the bag needs to be removed, the linkage slip ring 1407 is pushed upward to release the bag mouth of the multiple inner buckle plates 1402, so that the bag mouth of the bag falls under the action of gravity or with the assistance of external tension, and is separated from the buckling position of the multiple inner buckle plates 1402, so as to realize the removal of the bag. When installing the bag, the linkage slip ring 1407 is pulled downward to make the inner buckle plate 1402 away from the hole wall of the bag hole 13, and then the bag mouth is pushed upward to contact with the top plate 1403, and then the linkage slip ring 1407 and the bag are moved to release.

[0066] Since the top plate 1403 and the inner buckle plate 1402 are located inside the bag opening, in order to avoid the top plate 1403 and the inner buckle plate from colliding with the bag frame 6, resulting in the bag opening positioning plate 11 being unable to be raised or lowered, the bag frame 6 is improved as follows:

[0067] The bag frame 6 includes a lifting ring 601, vertical ribs 602, annular ribs 603, a bag bottom plate 604 and oblique ribs 605, a plurality of vertical ribs 602 are arranged around the axis of the bag bottom plate 604, a plurality of vertical ribs 602 are connected by a plurality of annular ribs 603 arranged on the inner side thereof, the top ends of the plurality of vertical ribs 602 are connected by the lifting ring 601, and the lower ends of the vertical ribs 602 are connected to the bag bottom plate 604 by the inclined oblique ribs 605;

[0068] The outer diameter of the hoisting ring 601 is larger than the diameter of the flower hole 7, so that the bag frame 6 can be hoisted on the flower hole plate 5 through the hoisting ring 601;

[0069] The vertical ribs 602 are located between adjacent inner buckle plates 1402, i.e., adjacent top plates 1403, and the diameter of the bag bottom plate 604 and the outer diameter of the annular ribs 603 are both smaller than the diameter of the circle where the multiple inner buckle plates 1402 are located, so that the inner buckle plates 1402 and the top plate 1403 can be raised and lowered along the cloth bag frame 6.

[0070] The function of the annular ribs 603 is to connect the multiple vertical ribs 602 to form a frame structure, and the function of the bag bottom plate 604 is to support the bottom of the bag and prevent airflow from entering from the bottom of the bag. The lower end of the oblique ribs 605 is inclined inward and connected to the bag bottom plate 604, avoiding the conflict between the bag bottom plate 604 and the top plate 1403 and the inner buckle plate 1402, thereby ensuring that the bag opening positioning plate 11 can be smoothly lifted and lowered along the bag frame 6, so as to achieve the cloth bag being put on the bag frame 6 and the cloth bag being taken off the bag frame 6.

[0071] What is further optimized in the above embodiment is that a plurality of sink grooves 21 are provided around each flower hole 7, and the sink grooves 21 are aligned with the top plate 1403 and the inner buckle plate 1402 of the bag mouth fixing mechanism 14, and the sink grooves 21 are used for the top plate 1403 and the inner buckle plate 1402 to enter, so that the bag mouth positioning plate 11 fits with the flower hole plate 5, so that the flower hole 7 is docked with the bag hole 13, that is, to ensure that there is no leakage in the air flow path connecting the inside of the cloth bag to the upper box 1.

[0072] Moreover, when the top plate 1403 contacts the groove wall at the top of the trough 21, it can prevent the top plate 1403 and the inner buckle plate 1402 from loosening, thereby ensuring that the inner buckle plate 1402 can stably and effectively fasten the bag mouth, preventing the bag from falling due to vibration and weight increase during the operation of the bag dust removal equipment.

[0073] Further optimized in the above embodiment is that an annular groove 22 penetrating the bottom is provided on the inner wall of the annular enclosure 1406, and an elastic protective rubber ring 23 is provided in the annular groove 22. The axial length of the protective rubber ring 23 is greater than the axial length of the annular groove 22, and the inner diameter of the protective rubber ring 23 is not greater than the inner diameter of the annular enclosure 1406. The purpose of providing the protective rubber ring 23 is to prevent the cloth bag from colliding with the edge of the bottom of the annular enclosure 1406 due to expansion during cleaning, thereby extending the service life of the cloth bag.

[0074] It is known from common technical knowledge that the present application can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present application or within the scope equivalent to the present application are included in the present application.

Claims

1. A bag dust removal device for a powder spraying workshop, comprising an upper box body (1), a middle box body (2) and a ash hopper (3) connected in sequence, the upper box body (1) is provided with an exhaust port (4) on the side, a plurality of bag frames (6) are arranged in the middle box body (2) through a perforated plate (5), the perforated plate (5) is provided with a plurality of perforated holes (7) for the bag frames (6) to pass through, an air inlet (8) is provided on the side of the middle box body (2), characterized in that: It also comprises a box support (9), an ash hopper lifting mechanism (10), a bag opening positioning plate (11) and a bag opening lifting mechanism (12); the middle box (2) is supported on the box support (9); the ash hopper lifting mechanism (10) is connected to the ash hopper (3) and drives the ash hopper (3) to dock with and separate from the middle box (2) in a lifting manner; the bag opening positioning plate (11) is arranged in the middle box (2) and is driven to be lifted and lowered by the bag opening lifting mechanism (12); The bag opening positioning plate (11) is provided with a plurality of bag passing holes (13) for the cloth bag frame (6) to pass through, and a bag opening fixing mechanism (14) is provided around each of the bag passing holes (13). The bag opening positioning plate (11) fixes the bag opening of the cloth bag via the bag opening fixing mechanism (14), so that the plurality of cloth bags can be sleeved on the cloth bag frame (6) as the bag opening positioning plate (11) rises.

2. The bag dust removal equipment for a powder spraying workshop according to claim 1 is characterized in that: A supporting platform (15) is provided on the top of the ash hopper (3), and an ash dropping hole (16) is provided on the supporting platform (15).

3. The bag dust removal equipment for a powder spraying workshop according to claim 1 is characterized in that: The box support (9) is composed of four columns, and two columns are arranged at intervals on both sides of the middle box (2).

4. The bag dust removal equipment for a powder spraying workshop according to claim 3 is characterized in that: The ash hopper lifting mechanism (10) comprises an orifice plate (1001) and a hydraulic cylinder (1002); the orifice plate (1001) is slidably sleeved on a column; the side of the ash hopper (3) is connected to the orifice plate (1001); and the hydraulic cylinder (1002) is fixedly arranged on the column and connected to the orifice plate (1001).

5. The bag dust removal equipment for a powder spraying workshop according to claim 1 is characterized in that: The bag mouth lifting mechanism (12) comprises a winch (1201), a steel cable (1202) and a fixed pulley (1203); the winch (1201) is arranged on the outer wall of the middle box (2) through the side box (17); the perforated plate (5) and the side wall of the upper box (1) are both provided with through holes for the steel cable (1202) to pass through; the fixed pulley (1203) is rotatably arranged on the inner wall of the upper box (1); one end of the steel cable (1202) is connected to the bag mouth positioning plate (11), and the other end is connected to the winch (1201) by passing through the fixed pulley (1203); and the winch (1201) and the fixed pulley (1203) are both arranged on both sides of the middle box (2).

6. The bag dust removal equipment for a powder spraying workshop according to claim 1, characterized in that: The bag opening fixing mechanism (14) comprises a movable connecting rod (1401), an inner buckle plate (1402), a top plate (1403), a sliding pin (1404), a transmission rod (1405) and a locking assembly, one end of the top plate (1403) is connected to the top end of the inner buckle plate (1402), both sides of the top plate (1403) are rotatably connected to a pair of movable connecting rods (1401), the two ends of the movable connecting rod (1401) are respectively rotatably connected to the top plate (1403) and the bag opening positioning plate (11), and the movable connecting rods (1401) on the same side and both sides are parallel to each other; The bag opening positioning plate (11) is provided with a plurality of guide holes (18) around the bag hole (13); the transmission rod (1405) passes through the guide holes (18) and is connected to a locking assembly provided on the bag opening positioning plate (11); The top plate (1403) is provided with a strip hole (19) along the radial direction of the bag hole (13), and the hole walls on both sides of the strip hole (19) are provided with strip grooves (20), and the two ends of the sliding pin (1404) are respectively slidably arranged in the strip grooves (20) on both sides, and the transmission rod (1405) is connected to the sliding pin (1404); The locking assembly lowers the top plate (1403) by pulling the top rod downward, and causes the top end of the movable link (1401) to move away from the inner buckle plate (1402), so that the inner buckle plate (1402) fastens the bag mouth to the wall of the bag hole (13).

7. The bag dust removal equipment for a powder spraying workshop according to claim 6, characterized in that: The locking assembly includes an annular enclosure (1406), a linkage slip ring (1407), a fixed ring (1408) and a tension spring (1409). The annular enclosure (1406) is arranged at the bottom of the bag opening positioning plate (11), and the inner diameter of the annular enclosure (1406) is not less than the aperture of the bag hole (13). The linkage slip ring (1407) is slidably mounted on the annular enclosure (1406) and connected to a plurality of transmission rods (1405). The fixed ring (1408) is fixedly mounted on the annular enclosure (1406) and is located below the linkage slip ring (1407). The linkage slip ring (1407) and the fixed ring (1408) are connected via a plurality of tension springs (1409).

8. The bag dust removal equipment for a powder spraying workshop according to claim 7, characterized in that: The bag frame (6) comprises a lifting ring (601), vertical ribs (602), annular ribs (603), a bag bottom plate (604) and oblique ribs (605); a plurality of the vertical ribs (602) are arranged around the axis of the bag bottom plate (604); a plurality of the vertical ribs (602) are connected by a plurality of annular ribs (603) arranged on the inner side thereof; the top ends of the plurality of the vertical ribs (602) are connected by the lifting ring (601); and the lower ends of the vertical ribs (602) are connected to the bag bottom plate (604) by inclined oblique ribs (605); The outer diameter of the hoisting ring (601) is greater than the diameter of the flower hole (7), so that the cloth bag frame (6) can be hoisted on the flower hole plate (5) through the hoisting ring (601); The vertical ribs (602) are located between adjacent inner buckle plates (1402), i.e., adjacent top plates (1403), and the diameter of the bag bottom plate (604) and the outer diameter of the annular ribs (603) are both smaller than the diameter of the circle where the multiple inner buckle plates (1402) are located, so that the inner buckle plates (1402) and the top plate (1403) can be raised and lowered along the bag frame (6).

9. The bag dust removal equipment for a powder spraying workshop according to claim 7, characterized in that: A plurality of recesses (21) are provided around each of the flower holes (7), and the recesses (21) are aligned with the top plate (1403) and the inner buckle plate (1402) of the bag opening fixing mechanism (14). The recesses (21) are used for the top plate (1403) and the inner buckle plate (1402) to enter, so that the bag opening positioning plate (11) and the flower hole plate (5) are fitted together, thereby making the flower holes (7) butt joint with the bag passing holes (13).

10. The bag dust removal equipment for a powder spraying workshop according to claim 7, characterized in that: An annular groove (22) penetrating the bottom is arranged on the inner wall of the annular enclosure (1406), and an elastic protective rubber ring (23) is arranged in the annular groove (22). The axial length of the protective rubber ring (23) is greater than the axial length of the annular groove (22), and the inner diameter of the protective rubber ring (23) is not greater than the inner diameter of the annular enclosure (1406).

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