A resin sand casting waste dust collector with replaceable cloth bag

Abstract

This invention relates to the field of dust collector equipment technology, specifically disclosing a dust collector for resin sand casting waste ash that facilitates filter bag replacement. The dust collector includes: a dust collector shell with an outlet pipe at the top and an inlet pipe at the bottom; a horizontal plate fixed inside the shell, with uniformly matrixed through holes for installing filter bags; a mounting component fixed to the bottom of the filter bags, with a frustum block fixed to it; and a pressure ring placed on top of the pressure ring, with circumferentially spaced fixed rails fixed to it. The fixed rails are slidably connected to a first slide rail, and the first slide rail is slidably connected to a second slide rail. This invention employs a multi-stage telescopic support system of fixed rails, slide rail one, and slide rail two, allowing for rapid retraction of the overall support frame height when replacing filter bags. This solves the problems of traditional extended filter bag frames being limited by factory height, insufficient space for disassembly and assembly, and difficulty in replacement.

Description

Technical Field

[0001] This invention relates to the field of dust collector equipment technology, and more specifically, to a dust collector for resin sand casting waste ash that is easy to replace filter bags. Background Technology

[0002] Resin sand casting workshops are prone to dust pollution. Deploying high-performance dust removal equipment at each dust-generating point is the mainstream method for dust control. Among them, bag filter technology combines scientific principles with high efficiency and has the best dust removal effect.

[0003] In the operation of conventional baghouse dust collectors, in order to improve filtration efficiency and meet dust emission standards, most of them increase the effective filtration area by lengthening the filter bags. After the filter bags are lengthened, the internal support filter bag frame is also lengthened. Due to the limited building height in low-rise factories, the space for replacing filter bags on-site is small and disassembly and assembly are difficult, making subsequent operation and maintenance extremely inconvenient.

[0004] Dust collectors operate under complex conditions over long periods, and the filter bags are prone to damage and leakage due to wear, aging, and impacts. Once the filter bags are damaged, dust-laden waste ash will be discharged directly from the outlet pipe along with the purified airflow, which not only reduces the dust removal efficiency but also causes secondary dust pollution, seriously affecting environmentally friendly production and compliance with emission standards.

[0005] In view of this, the present invention provides a dust collector for resin sand casting waste ash that is easy to replace the filter bag. Summary of the Invention

[0006] Technical problems to be solved To address the problems existing in the prior art, the present invention provides a dust collector for resin sand casting waste ash with easy-to-replace filter bags, thereby solving the technical problem mentioned in the background art that it is very inconvenient to replace filter bags when using bag filters.

[0007] Technical solution To achieve the above objectives, the present invention provides the following technical solution: a dust collector for resin sand casting waste ash that facilitates bag replacement, comprising: a dust collector shell, an air outlet pipe provided at the top of the dust collector shell, an air inlet pipe provided at the bottom of the dust collector shell, a horizontal plate fixedly connected inside the dust collector shell, and through holes arranged in a uniform matrix on the horizontal plate, wherein filter bags are installed in the through holes of the horizontal plate. The mounting component is fixedly connected to the bottom of the filter bag, and a frustum block is fixedly connected to the mounting component; A pressure ring is placed on the upper side of the horizontal plate. The pressure ring is fixedly connected to a fixed rail that is circumferentially spaced. The fixed rail is slidably connected to a slide rail one, and the slide rail one is slidably connected to a slide rail two. A fixed tube is fixedly connected to the fixed rail by an installation component. The fixed tube is slidably connected to a limit pin, and a spring is fixedly connected between the limit pin and the fixed tube. An unlocking mechanism is provided between slide rail one and slide rail two, and the unlocking mechanism fixes slide rail one and slide rail two.

[0008] Furthermore, the limiting pin is fixedly connected to a fixing post, the second slide rail is fixedly connected to an extrusion member, the extrusion member is provided with an inclined slope, and the first slide rail is provided with a limiting hole.

[0009] Furthermore, the unlocking mechanism includes: An extrusion rod is slidably connected to the slide rail two. The upper end of the extrusion rod is set as an inclined surface. A groove is opened at the lower part of the slide rail two. A connecting plate is slidably connected in the groove of the slide rail two. The connecting plate is fixedly connected to the extrusion rod. A limiting member is slidably connected to the slide rail two. The limiting member is configured as a folded shape, and the lower side of the limiting member is configured as an inclined surface. A spring two is fixedly connected between the limiting member and the slide rail two.

[0010] Furthermore, a fixing plate is fixedly connected between the multiple slide rails, and the fixing plate has through grooves distributed circumferentially. A limit hook is slidably connected in the groove of the fixing plate, and an elastic element is fixedly connected between the limit hook and the fixing plate.

[0011] Furthermore, the fixed plate is slidably connected to a sliding column, the sliding column is fixedly connected to a support plate, the support plate abuts against the limiting hook, and a spring is fixedly connected between the sliding column and the fixed plate.

[0012] Furthermore, the spacing between the limiting hooks is greater than the diameter of the frustum block.

[0013] Furthermore, the pressure ring is fixedly connected to a support tube, and a winding wheel is rotatably connected to the outside of the support tube via a mounting base. A connecting rope is fixedly connected between the winding wheel and the connecting plate.

[0014] Furthermore, the winding reel is fixedly connected to a limit wheel, the mounting base of the winding reel is fixedly connected to a support member, the support member is slidably connected to a limit post, and a spring is fixedly connected between the limit post and the support member.

[0015] Furthermore, it also includes a leak-proof mechanism, which is disposed on the support pipe and includes: A rotating ring is rotatably connected to the upper side of the support tube. A rubber sheet is fixed between the rotating ring and the support tube, and a torsion spring is fixed between the rotating ring and the support tube. A support frame is fixed to the inner wall of the support tube. The support frame is splinedly connected to a spline positioning post. The rotating ring is fixedly connected to a locking block. The spline positioning post and the locking block are in a limiting engagement.

[0016] Furthermore, a fixing frame is fixedly connected to the lower side of the spline positioning column, a sliding ring is fixedly connected to the fixing frame, the sliding ring is slidably connected to the support tube, a filter screen is fixedly connected to the sliding ring, and a spring is fixedly connected between the fixing frame and the support frame.

[0017] Beneficial effects Compared with the prior art, the present invention provides a dust collector for resin sand casting waste ash that is easy to replace filter bags, and has the following beneficial effects: 1. This invention adopts a multi-stage telescopic combination support consisting of a fixed rail, a sliding rail one, and a sliding rail two. When replacing the filter bag, the overall support frame height can be quickly retracted, solving the pain points of traditional extended filter bag frames being limited by factory floor height, insufficient disassembly and assembly space, and high replacement difficulty. It reduces the intensity of maintenance work, is suitable for the low building conditions of resin sand casting workshops, and improves the efficiency of filter bag replacement.

[0018] 2. The device uses a multi-component linkage and self-locking mechanism consisting of limit pins, springs, limit components, and unlocking mechanisms. During installation, the telescopic slide rail can be quickly unfolded and locked to form a stable integrated support frame, effectively preventing the filter bags from collapsing or deforming due to negative pressure, and ensuring the dust removal filtration area and dust removal efficiency. The reset of each spring, combined with the mechanical limit, results in strong structural linkage, precise positioning, and good equipment operation stability.

[0019] 3. An independent leak-proof mechanism is added, which can filter and purify the airflow for the second time under normal working conditions; when the filter bag is damaged and leaks, the waste ash is intercepted and accumulated by the filter screen, triggering a differential pressure linkage, automatically closing the exhaust channel, preventing the discharge of dust-containing waste ash, avoiding secondary dust pollution and excessive exhaust gas emissions, and improving the safety and environmental compliance of the dust collector. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a dust collector for resin sand casting waste ash that is easy to replace with filter bags, according to the present invention. Figure 2 This is a schematic diagram of the structure of the horizontal plate and filter bag in this invention; Figure 3 This is a schematic diagram of the filter bag and support tube in this invention; Figure 4 This is a cross-sectional view of the filter bag in this invention. Figure 5 This is a schematic diagram of the structure of the mounting component and the frustum block in this invention; Figure 6 This is a schematic diagram of the pressure ring and fixed rail in this invention; Figure 7 This is a schematic diagram of the structure of slide rail one and slide rail two in this invention; Figure 8 This is a cross-sectional view of the fixing tube in this invention; Figure 9 This is a cross-sectional view of slide rail two in this invention; Figure 10 This is a schematic diagram of the structure of the fixing plate and the limiting hook in this invention; Figure 11 This is a schematic diagram of the structure of the winding wheel and the limiting wheel in this invention; Figure 12 This is a schematic diagram of the structure of the limiting wheel and the limiting post in this invention; Figure 13 This is a cross-sectional view of the support tube and rotating ring in this invention.

[0021] In the diagram: 1. Dust collector casing; 2. Exhaust pipe; 3. Inlet pipe; 4. Horizontal plate; 5. Filter bag; 6. Mounting component; 7. Frustum block; 8. Pressure ring; 9. Fixed rail; 10. Slide rail one; 11. Slide rail two; 12. Fixed pipe; 13. Limiting pin; 14. Spring one; 15. Fixed column; 16. Extrusion component; 17. Extrusion rod; 18. Connecting plate; 19. Limiting component; 20. Spring two; 21. Fixed plate; 22. 1. Limit hook; 23. Sliding post; 24. Support plate; 25. Spring three; 26. Support tube; 27. Rewinding wheel; 28. Connecting rope; 29. ​​Limit wheel; 30. Support component; 31. Limit post; 32. Spring four; 33. Rotating ring; 34. Rubber sheet; 35. Torsion spring; 36. Support frame; 37. Spline positioning post; 38. Locking block; 39. Fixing frame; 40. Sliding ring; 41. Filter screen; 42. Spring five. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0024] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0025] This invention provides a dust collector for resin sand casting waste ash that allows for easy replacement of filter bags, such as... Figures 1-8As shown, it includes: dust collector housing 1, air outlet pipe 2, air inlet pipe 3, horizontal plate 4, filter bag 5, mounting parts 6, frustum block 7, pressure ring 8, fixed rail 9, slide rail one 10, slide rail two 11, fixed pipe 12, limit pin 13, spring one 14, fixed column 15, pressing parts 16, and unlocking mechanism. The dust collector housing 1 has an exhaust pipe 2 at its top and an intake pipe 3 at its bottom. A horizontal plate 4 is fixedly connected inside the dust collector housing 1. The horizontal plate 4 has through holes arranged in a uniform matrix, and filter bags 5 are installed through these holes. A mounting component 6 is fixedly connected to the bottom of the filter bags 5, and a frustum block 7 is fixedly connected to the mounting component 6. A pressure ring 8 is placed on the upper side of the horizontal plate 4, and a circumferentially spaced fixed rail 9 is fixedly connected to the pressure ring 8. The fixed rail 9 is slidably connected to a slide rail 10, and the slide rail 10 is slidably connected to a slide rail 2 11. Multiple fixed rails... Support rings are fixedly connected between the fixed rail 9, multiple slide rail 10, and multiple slide rail 2 11; the fixed pipe 12 is fixedly connected to the fixed rail 9 through the mounting part 6, and the fixed pipe 12 is slidably connected to the limit pin 13. A spring 14 is fixedly connected between the limit pin 13 and the fixed pipe 12; the unlocking mechanism is set between the slide rail 10 and the slide rail 2 11, and the unlocking mechanism fixes the slide rail 10 and the slide rail 2 11; the limit pin 13 is fixedly connected to the fixed post 15, the slide rail 2 11 is fixedly connected to the pressing part 16, the pressing part 16 is provided with an inclined slope, and the slide rail 10 is provided with a limit hole.

[0026] In use, the filter bag 5 is installed on the horizontal plate 4, and the pressure ring 8 is connected to the horizontal plate 4 by bolts. When in use, the unlocking mechanism is controlled so that the slide rail 10 and slide rail 21 extend outward along the fixed rail 9. Under the elastic force of the spring 14, the limiting pin 13 is inserted into the limiting hole of the slide rail 10, and the fixed rail 9 and slide rail 10 are fixed. Under the action of the unlocking mechanism, the slide rail 10 and slide rail 21 are fixed, and the fixed rail 9, slide rail 10 and slide rail 21 support the filter bag 5.

[0027] Air and waste ash enter through the inlet pipe 3, are filtered by the filter bag 5, and are discharged through the outlet pipe 1. When the filter bag 5 needs to be replaced, the unlocking mechanism causes the slide rail 10 and slide rail 2 11 to lose their fixation. The slide rail 2 11 slides upward along the slide rail 10, and the slide rail 10 drives the pressing member 16 to move upward. The inclined surface of the pressing member 16 presses against the fixed column 15, causing the limit pin 13 to retract into the fixed tube 12. The spring 14 is compressed, and the fixed rail 9 and slide rail 10 are released from fixation. The slide rail 10 continues to move upward, causing the slide rail 2 11 to reset along the fixed rail 9. Through the above operation, the distance between the slide rail 2 11 and the fixed rail 9 is shortened, so that the fixed rail 9 can be removed from the filter bag 5 even in a small space, which facilitates the replacement of the filter bag 5.

[0028] like Figure 7 ,Figures 9-12 As shown, the unlocking mechanism includes: a squeezing rod 17, a connecting plate 18, a limiting component 19, a second spring 20, a fixing plate 21, a limiting hook 22, a sliding column 23, a support plate 24, a third spring 25, a support tube 26, a winding wheel 27, a connecting rope 28, a limiting wheel 29, a support component 30, a limiting column 31, and a fourth spring 32. The extrusion rod 17 is slidably connected to the slide rail 11. The upper end of the extrusion rod 17 is set as an inclined surface. The lower part of the slide rail 11 has a groove. A connecting plate 18 is slidably connected in the groove of the slide rail 11. The connecting plate 18 is fixedly connected to the extrusion rod 17. The limiting member 19 is slidably connected to the slide rail 11. The limiting member 19 is set as a folded shape. The lower side of the limiting member 19 is set as an inclined surface. A spring 20 is fixedly connected between the limiting member 19 and the slide rail 11. A fixing plate 21 is fixedly connected between multiple slide rails 11. The fixing plate 21 has through grooves distributed circumferentially. A limiting hook 22 is slidably connected in the groove of the fixing plate 21. An elastic element, which is a tension spring, is fixedly connected between the limiting hook 22 and the fixing plate 21. The fixed plate 21 has a sliding groove (not shown in the attached drawing); a sliding column 23 is slidably connected to the fixed plate 21, and a support plate 24 is fixedly connected to the sliding column 23. The support plate 24 abuts against the limiting hook 22. A spring 3 25 is fixedly connected between the sliding column 23 and the fixed plate 21; the distance between the limiting hooks 22 is greater than the diameter of the frustum block 7; a support tube 26 is fixedly connected to the pressure ring 8, and a winding wheel 27 is rotatably connected to the outside of the support tube 26 through a mounting seat. A connecting rope 28 is fixedly connected between the winding wheel 27 and the connecting plate 18; a limiting wheel 29 is fixedly connected to the winding wheel 27, and a support member 30 is fixedly connected to the mounting seat of the winding wheel 27. A limiting column 31 is slidably connected to the support member 30, and a spring 4 32 is fixedly connected between the limiting column 31 and the support member 30.

[0029] During installation, pulling the limiting post 31 upward compresses the spring 4 32, causing the slide rail 2 11 and slide rail 1 10 to move downward under gravity. The five slide rails 2 11 drive the fixing plate 21 downward. Under the elastic force of the spring 1 14, the limiting pin 13 is inserted into the limiting hole of the slide rail 1 10. During the downward movement of the slide rail 2 11, under the elastic force of the spring 2 20, the limiting member 19 extends out. The limiting member 19 limits the bottom of the slide rail 1 10, thus fixing the slide rail 2 11 and slide rail 1 10.

[0030] During the above process, the fixed plate 21 drives the limiting hook 22 to move downward. When the sliding column 23 hits the frustum block 7, the spring 3 25 is compressed, and the sliding column 23 slides upward along the fixed plate 21. The sliding column 23 drives the support plate 24 to move upward. The support plate 24 no longer squeezes the limiting hook 22. Under the elastic force of the elastic element, the limiting hook 22 slides along the groove of the fixed plate 21. The three limiting hooks 22 engage with the frustum block 7 for limiting. Then the limiting column 31 is released. Under the elastic force of the spring 4 32, the limiting column 31 engages with the limiting wheel 29 for limiting.

[0031] When the filter bag 5 needs to be replaced, pull the limiting post 31 upward again, and then rotate the winding wheel 27. The winding wheel 27 winds up the connecting rope 28, and the connecting rope 28 pulls the connecting plate 18 upward. The connecting plate 18 drives the extrusion rod 17 to move upward. The extrusion rod 17 extrudes the inclined surface of the limiting member 19, and the limiting member 19 slides back along the second slide rail 11. The second spring 20 is compressed, and the limiting member 19 is no longer limited by the first slide rail 10. Under the pulling action of the connecting rope 28, the first slide rail 10 slides upward and resets along the second slide rail 11. After the second slide rail 11 drives the extrusion member 16 to extrude the fixing post 15, the limiting pin 13 is no longer limited by the limiting hole of the second slide rail 11, and the second slide rail 11 slides upward and resets along the fixing rail 9.

[0032] During the above process, the limiting hook 22 drives the frustum block 7 to move upward. During this process, the bottom of the filter bag 5 moves upward. After the fixing rail 9 is removed from the filter bag 5, the filter bag 5 is removed from the through hole of the horizontal plate 4, which facilitates the replacement of the filter bag 5. After the limiting hook 22 is reset, the limiting of the frustum block 7 is released.

[0033] like Figure 11 and Figure 13 As shown, it also includes a leak-proof mechanism, which is installed on the support tube 26. The leak-proof mechanism includes: a rotating ring 33, a rubber sheet 34, a torsion spring 35, a support frame 36, a spline positioning column 37, a locking block 38, a fixing frame 39, a sliding ring 40, a filter screen 41, and a spring 42. A rotating ring 33 is rotatably connected to the upper side of the support tube 26. A rubber sheet 34 is fixed between the rotating ring 33 and the support tube 26. A torsion spring 35 is fixed between the rotating ring 33 and the support tube 26. A support frame 36 is fixed to the inner wall of the support tube 26. A spline positioning post 37 is splined to the support frame 36. A locking block 38 is fixed to the rotating ring 33. The spline positioning post 37 and the locking block 38 are in a limiting fit. A fixing frame 39 is fixed to the lower side of the spline positioning post 37. A sliding ring 40 is fixed to the fixing frame 39. The sliding ring 40 is slidably connected to the support tube 26. A filter screen 41 is fixed to the sliding ring 40. A spring 42 is fixed between the fixing frame 39 and the support frame 36.

[0034] In the initial state, the torsion spring 35 is in a charged state, and the spline positioning post 37 and the locking block 38 are in a limited position. During the process of the filter bag 5 filtering the air containing waste ash, the filter screen 41 performs secondary filtration on the filtered air. When the filter bag 5 is damaged during use, the waste ash is directly screened out by the filter screen 41. As the waste ash gradually accumulates in the filter screen 41, when the filter screen 41 is completely blocked, the sliding ring 40 slides upward along the support tube 26. The sliding ring 40 drives the fixing frame 39 and the spline positioning post 37 to move upward. The spline positioning post 37 and the locking block 38 are disengaged. Then, under the elastic force of the torsion spring 35, the rotating ring 33 rotates along the support tube 26. When the rotating ring 33 rotates, the rubber sheet 34 twists and wraps tightly around the spline positioning post 37, thereby sealing the channel of the support tube 26 and preventing the filter bag 5 from being damaged, causing the air containing waste ash to be discharged from the air outlet 2.

[0035] Working principle: The filter bag 5 is installed in the through hole of the horizontal plate 4, and the pressure ring 8 is fixedly connected to the horizontal plate 4 with bolts. During installation, the unlocking mechanism is controlled to extend the slide rail 10 and slide rail 21 outward along the fixed rail 9. Under the elastic force of the spring 14, the limiting pin 13 is inserted into the limiting hole of the slide rail 10, realizing the relative fixation of the fixed rail 9 and the slide rail 10; at the same time, with the cooperation of the limiting part 19 in the unlocking mechanism and the spring 20, the slide rail 10 and slide rail 21 also remain fixed. Thus, the fixed rail 9, the slide rail 10 and the slide rail 21 together constitute the radial support structure for the filter bag 5, preventing it from collapsing during the filtration process.

[0036] Air containing waste dust enters the dust collector housing 1 through the inlet pipe 3, and after being filtered by the filter bag 5 on the horizontal plate 4, the clean air is discharged from the outlet pipe 2 at the top. During this process, the leak prevention mechanism is in standby mode: the torsion spring 35 is charged, the spline positioning column 37 and the locking block 38 are kept in the limit position, and the filter screen 41 performs secondary filtration on the filtered air to ensure that the discharged air is clean.

[0037] When filter bag 5 needs to be replaced, the operator can quickly disassemble it in a confined space by following the steps: Pulling the limiting post 31 upwards compresses the spring 32, separating the limiting post 31 from the limiting wheel 29. Then, rotating the winding wheel 27 winds up the connecting rope 28. The connecting rope 28 pulls the connecting plate 18 upwards, causing the pressing rod 17 to move upwards. As the pressing rod 17 moves upwards, its inclined surface applies pressure to the inclined surface of the limiting member 19, forcing the limiting member 19 to slide back along the second slide rail 11, compressing the spring 20. The limiting member 19 no longer limits the bottom of the first slide rail 10, releasing the fixation between the first slide rail 10 and the second slide rail 11. Under the continuous pulling of the connecting rope 28, the first slide rail 10 slides upwards along the second slide rail 11 to reset. During the upward sliding of the first slide rail 10, the pressing member 16 moves upwards synchronously. The inclined slope on the extruder 16 exerts pressure on the fixed post 15, forcing the limiting pin 13 to retract into the fixed tube 12 against the elastic force of the spring 14, thereby releasing the fixation between the fixed rail 9 and the slide rail 10. At this time, the slide rail 11 can slide upward along the fixed rail 9 to reset, significantly shortening the overall height between the slide rail 11 and the fixed rail 9, making it easier to pull the support structure out of the filter bag 5 within a limited space.

[0038] During the upward reset of slide rail 21, fixed plate 21 drives limit hook 22 to move upward synchronously. When sliding column 23 hits frustum block 7, spring 3 25 is compressed, sliding column 23 slides upward along fixed plate 21, causing support plate 24 to no longer press limit hook 22. Under the elastic force of elastic element (tension spring), limit hook 22 slides inward along the groove of fixed plate 21, and the three limit hooks 22 form a limiting engagement with frustum block 7, thereby hooking the bottom of filter bag 5. As slide rail 21 continues to move upward, limit hook 22 drives frustum block 7 and the bottom of filter bag 5 to move upward, so that filter bag 5 automatically comes out of the through hole of horizontal plate 4 for easy replacement. After replacing the new filter bag, reverse the operation of winding wheel 27 to loosen connecting rope 28. Under the action of gravity and the restoring force of each spring (spring 14, spring 20, spring 325), each slide rail extends downward in sequence and automatically relocks. At the same time, the limit hook 22 resets, releasing the limit on the frustum block 7, and the device returns to the state to be filtered.

[0039] During normal use of the filter bag 5, if the bag is damaged, some unfiltered waste ash will flow directly into the outlet pipe 2. At this time, the filter screen 41 in the leak-proof mechanism intercepts the airflow. As the waste ash gradually accumulates on the surface of the filter screen 41, the airflow resistance increases, and a pressure difference is formed upstream and downstream of the filter screen 41. When the filter screen 41 is completely blocked, the pressure difference drives the sliding ring 40 to overcome the elastic force of the spring 5 42 and slide upward along the support pipe 26. The sliding ring 40 drives the fixing frame 39 and the spline positioning column 37 to move upward synchronously, causing the spline positioning column 37 to disengage from the limit block 38. The torsion spring 35 in the stored state then releases its elastic force, driving the rotating ring 33 to rotate along the support pipe 26. The rotating ring 33 drives the rubber sheet 34 to twist and tightly wrap around the spline positioning column 37, thereby sealing the channel of the support pipe 26, effectively preventing the air containing waste ash from being discharged from the outlet pipe 2, and avoiding secondary pollution.

[0040] In all the solutions mentioned above, for connections between two components, welding, bolt and nut connection, bolt or screw connection, or other known connection methods can be selected according to the actual situation. These will not be elaborated here. For all fixed connections mentioned above, welding is preferred. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A dust collector for resin sand casting waste ash with easily replaceable filter bags, characterized in that, include: The dust collector housing (1) has an air outlet pipe (2) at the top and an air inlet pipe (3) at the bottom. A horizontal plate (4) is fixed inside the dust collector housing (1). The horizontal plate (4) has through holes distributed in a uniform matrix. Filter bags (5) are installed in the through holes of the horizontal plate (4). The mounting component (6) is fixed to the bottom of the filter bag (5), and the mounting component (6) is fixed to a frustum block (7). A pressure ring (8) is placed on the upper side of the horizontal plate (4). The pressure ring (8) is fixedly connected to a fixed rail (9) that is circumferentially spaced. The fixed rail (9) is slidably connected to a slide rail one (10). The slide rail one (10) is slidably connected to a slide rail two (11). The fixed tube (12) is fixed to the fixed rail (9) by the mounting part (6). The fixed tube (12) is slidably connected to the limit pin (13). A spring (14) is fixed between the limit pin (13) and the fixed tube (12). An unlocking mechanism is provided between the first slide rail (10) and the second slide rail (11), and the unlocking mechanism fixes the first slide rail (10) and the second slide rail (11).

2. A dust collector for resin sand casting waste ash with easily replaceable filter bags, as described in claim 1, is characterized in that... The limiting pin (13) is fixedly connected to a fixing post (15), the slide rail two (11) is fixedly connected to an extrusion member (16), the extrusion member (16) is provided with an inclined slope, and the slide rail one (10) has a limiting hole.

3. A dust collector for resin sand casting waste ash with easily replaceable filter bags, as described in claim 1, is characterized in that... The unlocking mechanism includes: The extrusion rod (17) is slidably connected to the slide rail two (11). The upper end of the extrusion rod (17) is set as an inclined surface. The lower part of the slide rail two (11) is provided with a groove. A connecting plate (18) is slidably connected in the groove of the slide rail two (11). The connecting plate (18) is fixedly connected to the extrusion rod (17). A limiting member (19) is slidably connected to the slide rail (11). The limiting member (19) is folded and the lower side of the limiting member (19) is an inclined surface. A spring (20) is fixed between the limiting member (19) and the slide rail (11).

4. A dust collector for resin sand casting waste ash with easily replaceable filter bags, as described in claim 3, is characterized in that... A fixing plate (21) is fixedly connected between multiple slide rails (11). The fixing plate (21) has through grooves distributed circumferentially. A limit hook (22) is slidably connected in the groove of the fixing plate (21). An elastic element is fixedly connected between the limit hook (22) and the fixing plate (21).

5. A dust collector for resin sand casting waste ash with easily replaceable filter bags, as described in claim 4, is characterized in that... The fixed plate (21) is slidably connected to a sliding column (23), the sliding column (23) is fixedly connected to a support plate (24), the support plate (24) abuts against the limiting hook (22), and a spring three (25) is fixedly connected between the sliding column (23) and the fixed plate (21).

6. A dust collector for resin sand casting waste ash with easily replaceable filter bags, as described in claim 5, is characterized in that... The distance between the limiting hooks (22) is greater than the diameter of the frustum block (7).

7. A dust collector for resin sand casting waste ash with easily replaceable filter bags, as described in claim 3, is characterized in that... The pressure ring (8) is fixedly connected to a support tube (26), and a winding wheel (27) is rotatably connected to the outside of the support tube (26) through a mounting seat. A connecting rope (28) is fixedly connected between the winding wheel (27) and the connecting plate (18).

8. A dust collector for resin sand casting waste ash with easily replaceable filter bags, as described in claim 7, is characterized in that... The winding reel (27) is fixedly connected to the limiting wheel (29), and the mounting seat of the winding reel (27) is fixedly connected to the support member (30). The support member (30) is slidably connected to the limiting post (31), and a spring (32) is fixedly connected between the limiting post (31) and the support member (30).

9. A dust collector for resin sand casting waste ash with easily replaceable filter bags, as described in claim 7, is characterized in that... It also includes a leak-proof mechanism, which is disposed on the support pipe (26), and the leak-proof mechanism includes: A rotating ring (33) is rotatably connected to the upper side of the support tube (26). A rubber sheet (34) is fixed between the rotating ring (33) and the support tube (26). A torsion spring (35) is fixed between the rotating ring (33) and the support tube (26). The support frame (36) is fixed to the inner wall of the support tube (26). The support frame (36) is splined with a spline positioning post (37). The rotating ring (33) is fixed with a locking block (38). The spline positioning post (37) and the locking block (38) are in a limiting cooperation.

10. A dust collector for resin sand casting waste ash with easily replaceable filter bags, as described in claim 9, is characterized in that... A fixing frame (39) is fixedly connected to the lower side of the spline positioning column (37), and a sliding ring (40) is fixedly connected to the fixing frame (39). The sliding ring (40) is slidably connected to the support tube (26), and a filter screen (41) is fixedly connected to the sliding ring (40). A spring (42) is fixedly connected between the fixing frame (39) and the support frame (36).

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