A cartridge dust collector for foundry workshop

Abstract

The present application relates to a filter cartridge dust collector for a foundry, which belongs to the technical field of dust removal equipment, and includes a box body, the box body is provided with an air inlet and an air outlet, the box body is provided with a plurality of inclined filter cartridge inner frames, the box body is provided with a back-blowing device for blowing compressed air into the filter cartridge inner frame, the inner side of the filter cartridge inner frame is provided with a cyclone generating mechanism, the cyclone generating mechanism is used to generate a high-speed cyclone along the axial direction of the filter cartridge. The present application can generate a high-speed cyclone on the inner side of the filter cartridge by adding a cyclone generating mechanism, and the airflow direction in the high-speed cyclone is constantly changing, so that the inner side of the filter cartridge can be sprayed more evenly, which makes it easier for the filter cartridge surface to be cleaned evenly and comprehensively, thereby improving the cleaning effect during back-blowing cleaning.

Description

Technical Field

[0001] The present application relates to the field of dust removal equipment, and in particular to a cartridge dust collector for a foundry. Background Art

[0002] Molding sand is used during casting. A large amount of dust will be generated in the process of making sand molds, which will affect the construction environment. Therefore, a dust collector is needed to remove the dust.

[0003] In the prior art, many manufacturers use obliquely inserted filter cartridge dust collectors to remove dust from foundries. The top air inlet of the existing filter cartridge dust collector is connected to the air collection duct in the workshop, and the air outlet is connected to the exhaust duct in the workshop. Under the action of the fan unit, the dust-containing gas passes through the air collection duct, the filter cartridge dust collector and the exhaust duct in turn, and finally the dust-containing gas is dust-removed and purified and discharged into the atmosphere. The working principle of the obliquely inserted filter cartridge dust collector mainly relies on the sudden expansion of the air flow end face and the action of the air flow distribution plate. Under the action of gravity and inertia, a part of the coarse dust particles in the air flow settles into the ash hopper, and the dust particles with fine particle size and low density enter the filter chamber. Through the comprehensive effects of Brownian diffusion and fiber interception, the dust is deposited on the filter material surface of the filter cartridge. The purified gas enters the clean air chamber and is discharged from the air outlet through the action of the fan unit. Since dust will accumulate on the surface of the filter cartridge of the oblique-insertion filter cartridge dust collector after long-term use, which will generate resistance and affect the dust removal efficiency, a back-blowing device is provided at the upper open end of each filter cartridge in the existing oblique-insertion filter cartridge dust collector, and a blow pipe is provided on the inner side of the filter cartridge. The blow pipe is provided with blow holes. Compressed air is regularly introduced into the blow pipe through the back-blowing device, and then a high-pressure and high-speed airflow is blown out through the blow holes, thereby blowing off the dust particles on the surface of the filter cartridge, thereby ensuring the permeability and filtering effect of the filter cartridge.

[0004] Regarding the above technical solution, the inventor believes that since the blowing direction of the blowing pipe is constant, the surface of the filter cartridge cannot be cleaned evenly and comprehensively, resulting in the oblique-insertion filter cartridge dust collector having lower and lower working efficiency after being used for a long time. Summary of the invention

[0005] In order to improve the cleaning effect during back-blowing cleaning, the present application provides a cartridge dust collector for a foundry.

[0006] The present application provides a cartridge dust collector for a foundry, which adopts the following technical solution:

[0007] A filter cartridge dust collector for a foundry workshop comprises a box body, the box body is provided with an air inlet and an air outlet, the box body is provided with a plurality of inclined filter cartridge inner frames, the box body is provided with a back-blowing device for blowing compressed air into the filter cartridge inner frames, the inner side of the filter cartridge inner frames is provided with a cyclone generating mechanism, the cyclone generating mechanism is used to generate a high-speed cyclone along the axial direction of the filter cartridge.

[0008] By adopting the above-mentioned technical scheme, when the dust collector is used, on the one hand, the back-blowing device can blow compressed air into the inner frame of the filter cartridge and directionally clean the filter cartridge from the inside of the filter cartridge, which is the same as the traditional cleaning mode. On the other hand, the present application can generate a high-speed cyclone on the inner side of the filter cartridge by adding a cyclone generating mechanism. The direction of the airflow in the high-speed cyclone is constantly changing, so that the inside of the filter cartridge can be sprayed more evenly, which makes it easier for the surface of the filter cartridge to be evenly and comprehensively cleaned, thereby improving the cleaning effect during back-blowing cleaning, reducing the phenomenon of dust accumulation in the local area of ​​the filter cartridge after long-term operation, and thus helping to ensure the stable working efficiency of the dust collector.

[0009] Optionally, a blow pipe is provided on the inner frame of the filter cartridge, and the blow pipe is located on the inner side of the inner frame of the filter cartridge. A plurality of blow holes are provided on the blow pipe, the inclined lower end of the blow pipe is closed, and the inclined upper end is connected to the output end of the back-blowing device. The cyclone generating mechanism is provided on the blow pipe, and is used to convert the air flow beam blown out from the blow hole into a high-speed cyclone.

[0010] Optionally, the cyclone generating mechanism comprises an outer sleeve, a fan frame and a guide fan blade, wherein the outer sleeve is movably arranged on the outside of the blowing pipe, the fan frame is rotatably arranged on the outside of the outer sleeve, and a plurality of guide fan blades are provided and each of the guide fan blades is inclined at a certain angle on the outside of the outer fan frame;

[0011] The inner end opening of the blowing hole is connected to the tube cavity of the ejection pipe, and the outer end opening is arranged obliquely to the lower end of the blowing pipe. The air flow beam ejected from the blowing hole can act on the fan surface of the guide fan blade. A reset mechanism is provided on the outer ring. The reset mechanism is arranged on the lower side of the cyclone generating mechanism and the axial lower end of the fan frame abuts against the reset mechanism.

[0012] Optionally, a guide groove is provided on the blowing pipe, and a first ball is provided on the inner circumference of the outer ring, and the first ball matches the guide groove.

[0013] Optionally, the guide rail groove is spirally wound around the outside of the blowing pipe and does not interfere with the blowing hole, and the first ball can move smoothly in the guide rail groove.

[0014] Optionally, there are multiple cyclone generating mechanisms, and they are spaced one by one with corresponding reset mechanisms. The reset mechanism includes a compression spring and an end ring arranged at least at one end of the compression spring. The compression spring and the end ring are sleeved on the outside of the blow pipe, and a plurality of second balls are provided at one end of the end ring away from the corresponding compression spring.

[0015] Optionally, a limit pin is provided on the outer side of the blowing pipe, and the limit pin is arranged above all cyclone generating mechanisms.

[0016] Optionally, a perforated plate frame is provided in the box body, and the box body is divided into a dust removal chamber and a clean air chamber by the perforated plate frame, the air inlet is arranged above the dust removal chamber, the filter cartridge inner frame is located in the dust removal chamber, the air outlet is arranged on the clean air chamber, and the back-blowing device is arranged on one side of the clean air chamber.

[0017] Optionally, a plurality of the boxes are provided, and the plurality of the boxes are connected and arranged side by side, the air inlets of the plurality of the boxes are connected to an air inlet duct, and the air outlets of the plurality of the boxes are connected to an air outlet duct.

[0018] Optionally, a plurality of the boxes are provided, and the plurality of the boxes are connected and arranged side by side, the air inlets of the plurality of the boxes are connected to an air inlet duct, and the air outlets of the plurality of the boxes are connected to an air outlet duct.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. When using the dust collector, on the one hand, the back-blowing device can blow compressed air into the inner frame of the filter cartridge and carry out directionally cleaning of the filter cartridge from the inside of the filter cartridge, which is the same as the traditional cleaning mode. On the other hand, the present application can generate a high-speed cyclone on the inner side of the filter cartridge by adding a cyclone generating mechanism. The direction of the airflow in the high-speed cyclone keeps changing, so that the inner side of the filter cartridge can be sprayed more evenly, which makes it easier for the surface of the filter cartridge to be evenly and comprehensively cleaned, thereby improving the cleaning effect during back-blowing cleaning and reducing the phenomenon of dust accumulation in the local area of ​​the filter cartridge after long-term operation, which is beneficial to ensure the stable working efficiency of the dust collector.

[0021] 2. By setting the direction of the orifice at the outer end of the spray hole, when the back-blowing device inputs high-pressure air into the spray pipe, a high-speed airflow can be ejected from the spray hole. When a part of the high-speed airflow acts on the fan surface of the guide blade, it can drive the guide fan surface to rotate at high speed and convert the passing high-speed airflow into a high-pressure cyclone. The present application only needs to utilize the high-pressure airflow ejected from the spray hole to operate the cyclone generating mechanism, and no other power source is required. And when the high-speed airflow acts on the fan blade of the guide blade, the cyclone generating mechanism is driven to move downward along the spray pipe while generating a cyclone. When the back-blowing device stops delivering the air source, the cyclone generating mechanism can be reset by the reset mechanism, so that the cyclone generating mechanism can reciprocate along the axial direction of the spray pipe, and the high-speed cyclone synchronously reciprocates along the axial direction of the spray pipe, so that the cyclone generating mechanism can act more evenly on the inner side of the filter cartridge, further improving the cleaning effect during back-blowing cleaning.

[0022] 3. Through the spirally arranged guide rail groove, when the cyclone generating mechanism moves up and down along the injection pipe, the outer ring can perform a combined circular and reciprocating linear motion along the trajectory of the guide rail groove. In this way, the movement path of the cyclone generating mechanism along the axial direction of the injection pipe is extended by the guide rail groove, which facilitates the slowing down of the axial movement of the high-speed cyclone in the injection hole, so that the inner side of the filter cartridge can fully receive the high-speed cyclone, which is beneficial to the filter cartridge to achieve full and thorough high-speed cyclone cleaning, and further improves the cleaning effect during backblowing cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the internal structure of a cartridge dust collector for a foundry according to an embodiment of the present application.

[0024] Figure 2 It is a structural diagram that embodies the overall structure of the embodiment of the present application.

[0025] Figure 3 It is a schematic diagram of the structure of the blowing tube in the embodiment of the present application.

[0026] Figure 4 It is a schematic diagram of the structure of the guide rail groove in the embodiment of the present application.

[0027] Figure 5 It is a structural schematic diagram of the cyclone generating mechanism in the embodiment of the present application.

[0028] Figure 6 It is a cross-sectional view of the blowing tube in the embodiment of the present application to reflect the shape of the blowing hole.

[0029] Figure 7 It is a structural schematic diagram of the reset mechanism in the embodiment of the present application.

[0030] Explanation of the reference numerals: 1. housing; 11. supporting frame; 12. air inlet; 13. air outlet; 14. orifice plate frame; 15. dust removal chamber; 16. clean air chamber; 17. ash hopper; 2. inner frame of filter cartridge; 3. backblowing device; 4. air inlet duct; 5. air outlet duct; 6. dust discharge duct; 61. dust discharge port; 7. injection pipe; 71. injection hole; 72. guide rail groove; 73. limit latch; 8. cyclone generating mechanism; 81. outer ring; 811. first ball; 812. wedge-shaped groove; 82. fan frame; 83. guide fan blade; 9. reset mechanism; 91. compression spring; 92. end ring; 921. second ball. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-7 , further details of this application are given.

[0032] Example:

[0033] The present application embodiment discloses a cartridge dust collector for a foundry. Figure 1 A filter cartridge dust collector for a foundry workshop comprises a box body 1, a supporting base frame 11 is fixed to the bottom of the box body 1, an air inlet 12 and an air outlet 13 are arranged on the box body 1, a perforated plate frame 14 is fixed in the box body 1, and the box body 1 is divided into a dust removal chamber 15 and a clean air chamber 16 by the perforated plate frame 14, the air inlet 12 is arranged above the dust removal chamber 15, a plurality of inclined filter cartridge inner frames 2 are installed in the dust removal chamber 15, the air outlet 13 is arranged on the clean air chamber 16, a back-blowing device 3 is fixed on one side of the clean air chamber 16, and compressed air can be blown into the filter cartridge inner frame 2 through the back-blowing device 3 to realize basic dust cleaning treatment.

[0034] Reference Figure 1-2 In order to ensure that the dust collector is suitable for the overall dust removal of the foundry, multiple boxes 1 are provided, and the multiple boxes 1 are connected and arranged side by side. The air inlets 12 of the multiple boxes 1 are connected in parallel with the air inlet ducts 4, and the air outlets 13 of the multiple boxes 1 are connected in parallel with the air outlet ducts 5. The air after dust removal and purification is uniformly discharged through the air outlet ducts 5. The air can be introduced into the multiple air inlets 12 through the air inlet ducts 4, so that the multiple boxes 1 can be dusted at the same time, and the dust removal operation with a large air intake volume can be realized.

[0035] Reference Figure 1-2 A dust hopper 17 is fixed at the bottom of each box 1, and the lower sides of the multiple ash hoppers 17 are connected to the same inclined dust discharge pipe 6, the inclined upper end of the dust discharge pipe 6 is closed, and the inclined lower end is a dust discharge port 61. By setting a dust discharge pipe 6, the dust falling into each ash hopper 17 after cleaning can be discharged centrally.

[0036] Reference Figure 1 and Figure 3-4 A blow pipe 7 is fixed on the filter cartridge inner frame 2. The blow pipe 7 is located inside the filter cartridge inner frame 2 and has the same inclination direction as the filter cartridge inner frame 2. A plurality of blow holes 71 are provided on the blow pipe 7. The inclined lower end of the blow pipe 7 is closed, and the inclined upper end is connected to the output end of the back-blowing device 3. A cyclone generating mechanism 8 is provided on the blow pipe 7. The cyclone generating mechanism 8 is used to convert the air flow beam blown out from the blow hole 71 into a high-speed cyclone along the axial direction of the filter cartridge.

[0037] When using the dust collector, on the one hand, the back-blowing device 3 is the same as the traditional cleaning mode, and can blow compressed air into the inner frame 2 of the filter cartridge to directionally clean the filter cartridge from the inside of the filter cartridge. On the other hand, the present application can generate a high-speed cyclone on the inner side of the filter cartridge by adding a cyclone generating mechanism 8. The direction of the airflow in the high-speed cyclone is constantly changing, so that the inside of the filter cartridge can be sprayed more evenly, which makes it easier for the surface of the filter cartridge to be evenly and comprehensively cleaned, thereby improving the cleaning effect during back-blowing cleaning, and reducing the phenomenon of local dust accumulation in the filter cartridge after long-term operation, which is beneficial to ensure the stable working efficiency of the dust collector.

[0038] Reference Figure 4-6 The cyclone generating mechanism 8 includes an outer ring 81, a fan frame 82 and a guide fan blade 83. The outer ring 81 is movably arranged on the outer side of the blowing pipe 7, and the fan frame 82 is rotatably arranged on the outer side of the outer ring 81. A plurality of guide fan blades 83 are provided, and each guide fan blade 83 is inclined at a certain angle to the outer side of the outer fan frame 82. The inner end opening of the blowing hole 71 is connected to the tube cavity of the ejection pipe, and the outer end opening is arranged obliquely to the lower end of the blowing pipe 7. The air flow jetted from the blowing hole 71 can act on the fan surface of the guide fan blade 83. The outer ring 81 is provided with a reset mechanism 9, which is arranged on the lower side of the cyclone generating mechanism 8 and the axial lower end of the fan frame 82 abuts against the reset mechanism 9.

[0039] By setting the direction of the orifice of the outer end of the blowing hole 71, when the back-blowing device 3 inputs high-pressure air into the blowing pipe 7, a high-speed airflow can be ejected from the blowing hole 71. When the above-mentioned part of the high-speed airflow acts on the fan surface of the guide fan blade 83, it can drive the guide fan surface to rotate at high speed and convert the high-speed airflow passing through into a high-pressure cyclone. The present application only needs to use the high-pressure airflow ejected from the blowing hole 71 to make the cyclone generating mechanism 8 operate, and no other power source is required to be set up additionally. And when the high-speed airflow acts on the fan blade of the guide fan blade 83, the cyclone generating mechanism 8 is driven to move downward along the blowing pipe 7 while generating a cyclone. When the back-blowing device 3 stops delivering the air source, the cyclone generating mechanism 8 can be reset by the reset mechanism 9, so that the cyclone generating mechanism 8 can reciprocate along the axial direction of the blowing pipe 7, and the high-speed cyclone synchronously reciprocates along the axial direction of the blowing pipe 7, so that the cyclone generating mechanism 8 can act more evenly on the inner side of the filter cartridge, further improving the cleaning effect during back-blowing cleaning.

[0040] Reference Figure 4-5A guide groove 72 is provided on the outer wall of the blowing pipe 7, and a first ball 811 is provided on the inner circumference of the outer ring 81. The first ball 811 matches the guide groove 72, and the movement of the outer ring 81 can be guided by the guide groove 72. The guide groove 72 is wound around the outer side of the blowing pipe 7 in a spiral shape and does not interfere with the blowing hole 71. The first ball 811 can move smoothly in the guide groove 72. Through the guide groove 72 set in a spiral shape, when the cyclone generating mechanism 8 moves up and down along the blowing pipe 7, the outer ring 81 can make a composite movement of a circle and a reciprocating straight line along the track of the guide groove 72. In this way, the movement path of the cyclone generating mechanism 8 when it moves along the axial direction of the ejection pipe is extended by the guide groove 72, which is convenient for slowing down the movement of the high-speed cyclone in the axial direction of the blowing hole 71, so that the inner side of the filter cartridge can fully receive the high-speed cyclone, which is conducive to the filter cartridge to achieve full and thorough high-speed cyclone cleaning, and further improve the cleaning effect during back-blowing cleaning.

[0041] Reference Figure 2 , Figure 4 and Figure 7 , there are multiple cyclone generating mechanisms 8, and they are arranged one by one with the corresponding reset mechanisms 9. The reset mechanism 9 includes a compression spring 91 and an end ring 92 arranged at least at one end of the compression spring 91. The compression spring 91 and the end ring 92 are sleeved on the outer side of the blowing pipe 7. The end face of the end ring 92 away from the corresponding compression spring 91 is provided with multiple second balls 921. When the compressed airflow ejected from the blowing hole 71 pushes the guide fan to move downward along the blowing pipe 7, the compression spring 91 is compressed. When the back-blowing device 3 stops inputting high-pressure air, the compression spring 91 is reset, driving the outer ring 81 to move upward along the blowing pipe 7. Since the outer ring 81 will perform a composite motion of a circle and a reciprocating straight line along the trajectory of the guide rail groove 72, and the circular motion of the outer ring 81 of two adjacent cyclone generating mechanisms 8 may not be consistent, the end ring 92 and the second ball 921 can reduce the interference of the motion of the two adjacent cyclone generating mechanisms 8, reduce the wear of the cyclone generating mechanism 8, and ensure the smooth movement of the cyclone generating mechanism 8.

[0042] Reference Figure 5 The inner peripheral side wall of the outer ring 81 is also provided with a plurality of wedge-shaped grooves 812, and the small end of the wedge-shaped grooves 812 is arranged at the top and the large end at the bottom. When the outer end openings of part of the blowing holes 71 are covered by the outer ring 81, the high-speed airflow ejected from the blowing holes 71 can act on the large end of the wedge-shaped grooves 812 through the arrangement of the wedge-shaped grooves 812, thereby pushing the outer ring 81 to move downward along the blowing pipe 7, further boosting the outer ring 81.

[0043] Reference Figure 4A limit pin 73 is inserted on the outer side of the blowing pipe 7, and the limit pin 73 is arranged above all the cyclone generating mechanisms 8. The limit pin 73 can limit the cyclone generating mechanism 8 to prevent the cyclone generating mechanism 8 from slipping off the blowing ring when the inner frame 2 of the filter cartridge is disassembled, which saves the trouble of reinstalling the cyclone generating mechanism 8 and avoids the risk of the cyclone generating mechanism 8 being damaged.

[0044] The implementation principle of a filter cartridge dust collector for a foundry workshop in an embodiment of the present application is as follows: when the dust collector is used, on the one hand, the back-blowing device 3 can blow compressed air into the inner frame 2 of the filter cartridge, and directionally clean the filter cartridge from the inside of the filter cartridge, the same as the traditional cleaning mode; on the other hand, the present application can generate a high-speed cyclone on the inner side of the filter cartridge by adding a cyclone generating mechanism 8, and the direction of the airflow in the high-speed cyclone is constantly changing, so that the inner side of the filter cartridge can be sprayed more evenly, which makes it easier for the surface of the filter cartridge to be evenly and comprehensively cleaned, thereby improving the cleaning effect during back-blowing cleaning, and reducing the phenomenon of dust accumulation in the local area of ​​the filter cartridge after long-term operation, which is beneficial to ensure the stable working efficiency of the dust collector.

[0045] By setting the direction of the orifice of the outer end of the blowing hole 71, when the back-blowing device 3 inputs high-pressure air into the blowing pipe 7, a high-speed airflow can be ejected from the blowing hole 71. When the above-mentioned part of the high-speed airflow acts on the fan surface of the guide fan blade 83, it can drive the guide fan surface to rotate at high speed and convert the high-speed airflow passing through into a high-pressure cyclone. The present application only needs to use the high-pressure airflow ejected from the blowing hole 71 to make the cyclone generating mechanism 8 operate, and no other power source is required to be set up additionally. And when the high-speed airflow acts on the fan blade of the guide fan blade 83, the cyclone generating mechanism 8 is driven to move downward along the blowing pipe 7 while generating a cyclone. When the back-blowing device 3 stops delivering the air source, the cyclone generating mechanism 8 can be reset by the reset mechanism 9, so that the cyclone generating mechanism 8 can reciprocate along the axial direction of the blowing pipe 7, and the high-speed cyclone synchronously reciprocates along the axial direction of the blowing pipe 7, so that the cyclone generating mechanism 8 can act more evenly on the inner side of the filter cartridge, further improving the cleaning effect during back-blowing cleaning.

[0046] By means of the spirally arranged guide groove 72, when the cyclone generating mechanism 8 moves up and down along the injection pipe 7, the outer ring 81 can perform a combined circular and reciprocating linear motion along the trajectory of the guide groove 72. In this way, the movement path of the cyclone generating mechanism 8 along the axial direction of the injection pipe is extended by the guide groove 72, so as to slow down the axial movement of the high-speed cyclone in the injection hole 71, so that the inner side of the filter cartridge can fully receive the high-speed cyclone, which is beneficial for the filter cartridge to achieve full and thorough high-speed cyclone cleaning, and further improve the cleaning effect during backblowing cleaning.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A filter cartridge dust collector for a foundry, comprising a housing (1), the housing (1) being provided with an air inlet (12) and an air outlet (13), the housing (1) being provided with a plurality of inclined filter cartridge inner frames (2), the housing (1) being provided with a back-blowing device (3) for blowing compressed air into the filter cartridge inner frames (2), characterized in that: A cyclone generating mechanism (8) is provided on the inner side of the filter cartridge inner frame (2), and the cyclone generating mechanism (8) is used to generate a high-speed cyclone along the axial direction of the filter cartridge; The filter cartridge inner frame (2) is provided with a blow pipe (7), the blow pipe (7) is located on the inner side of the filter cartridge inner frame (2), the blow pipe (7) is provided with a plurality of blow holes (71), the inclined lower end of the blow pipe (7) is closed, and the inclined upper end is connected to the output end of the back-blowing device (3), and the cyclone generating mechanism (8) is provided on the blow pipe (7) and is used to convert the air flow beam blown out from the blow hole (71) into a high-speed cyclone; The cyclone generating mechanism (8) comprises an outer ring (81), a fan frame (82) and a guide fan blade (83); the outer ring (81) is movably arranged on the outside of the blowing pipe (7); the fan frame (82) is rotatably arranged on the outside of the outer ring (81); a plurality of guide fan blades (83) are provided, and each of the guide fan blades (83) is inclined at a certain angle on the outside of the outer fan frame (82); The inner end opening of the blowing hole (71) is connected to the tube cavity of the blowing pipe, and the outer end opening is arranged obliquely toward the lower end of the blowing pipe (7). The air flow jetted from the blowing hole (71) can act on the fan surface of the guide fan blade (83). A reset mechanism (9) is provided on the outer ring (81). The reset mechanism (9) is arranged on the lower side of the cyclone generating mechanism (8), and the axial lower end of the fan frame (82) is in contact with the reset mechanism (9).

2. The cartridge dust collector for a foundry according to claim 1, characterized in that: The blowing pipe (7) is provided with a guide groove (72), and the inner circumferential surface of the outer ring (81) is provided with a first ball (811), and the first ball (811) matches the guide groove (72).

3. The cartridge dust collector for a foundry according to claim 2, characterized in that: The guide groove (72) is spirally wound and arranged on the outside of the blowing pipe (7) and is arranged without interfering with the blowing hole (71). The first ball (811) can move smoothly in the guide groove (72).

4. The cartridge dust collector for a foundry according to claim 3, characterized in that: The cyclone generating mechanism (8) is provided in plurality and is spaced apart from the corresponding reset mechanism (9). The reset mechanism (9) comprises a compression spring (91) and an end ring (92) provided at least at one end of the compression spring (91). The compression spring (91) and the end ring (92) are sleeved on the outer side of the blowing pipe (7). The end of the end ring (92) away from the corresponding compression spring (91) is provided with a plurality of second balls (921).

5. The cartridge dust collector for a foundry according to claim 4, characterized in that: A limit pin (73) is provided on the outer side of the blowing pipe (7), and the limit pin (73) is arranged above all cyclone generating mechanisms (8).

6. The cartridge dust collector for a foundry according to claim 1, characterized in that: A perforated plate frame (14) is provided in the box body (1), and the box body (1) is divided into a dust removal chamber (15) and a clean air chamber (16) by the perforated plate frame (14); the air inlet (12) is provided above the dust removal chamber (15); the filter cartridge inner frame (2) is located in the dust removal chamber (15); the air outlet (13) is provided on the clean air chamber (16); and the back-blowing device (3) is provided on one side of the clean air chamber (16).

7. The cartridge dust collector for a foundry according to claim 1, characterized in that: The box bodies (1) are provided in plurality, and the plurality of box bodies (1) are arranged in parallel and connected, the air inlets (12) of the plurality of box bodies (1) are connected to the air inlet duct (4), and the air outlets (13) of the plurality of box bodies (1) are connected to the air outlet duct (5).

8. The cartridge dust collector for a foundry according to claim 1, characterized in that: An ash hopper (17) is provided at the bottom of the box body (1), and a plurality of the ash hoppers (17) are connected to an inclined dust discharge pipe (6), the inclined upper end of the dust discharge pipe (6) is closed, and the inclined lower end is a dust discharge port (61).

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