A dust removal device for flour processing

Abstract

This invention relates to the field of flour processing technology and discloses a dust removal device for flour processing, comprising an abutment-type flour collection mechanism and two elastic telescopic pressure mechanisms. This dust removal device utilizes the flour's own gravity to autonomously detach from the conveyor belt and be collected, requiring no other power source. Therefore, it features low production and operating costs. Furthermore, the device utilizes the elasticity of a helical spring to cause an arc-shaped abutment plate to press against the surface of the conveyor belt with a certain pressure, achieving deep cleaning of the conveyor belt surface and thus improving the cleaning capacity of the conveyor belt.

Description

Technical Field

[0001] This invention relates to the field of flour processing technology, specifically to a dust removal device for flour processing. Background Technology

[0002] Flour needs to be packaged before it leaves the factory. Depending on the size of the packaging, it can be divided into small packages, ton bags, and bulk tanker truck packaging. Each type of packaging requires specialized equipment. For example, the packaging technology for small packages is very mature in the market. However, in actual operation, although the packaging technology is mature, there are still some defects. Since flour bags are transported by conveyor belts, some flour and impurities will fall onto the surface of the conveyor belt. This flour has considerable recycling value. If it is not cleaned for a long time, it can easily breed bacteria and affect the hygiene quality.

[0003] To this end, Chinese Patent Publication No. CN114955460B discloses a "Flour Dust Adsorption and Cleaning Device for Flour Processing". Its main structure includes a base with a conveyor belt on its surface, a support seat on its surface with a movable groove, and an adsorption plate within the movable groove, the adsorption plate being located on the surface of the conveyor belt; a moving groove on the surface of the adsorption plate, with a baffle on its surface; and an adsorption port on the surface of the adsorption plate, with a filter screen plate inside, a connecting block on the surface of the filter screen plate, and one end of the baffle located on the surface of the connecting block. This flour dust adsorption and cleaning device for flour processing connects to the adsorption plate via a connecting pipe, enabling the adsorption and collection of dust for secondary utilization. Furthermore, the filter screen plate cleans residual dust and impurities at the adsorption port, preventing dust from re-entering the air during cleaning, and the dust and impurities are treated by adsorption through a plate-adhesive method.

[0004] However, the flour dust adsorption and cleaning device for flour processing mentioned above has the following drawbacks in actual use: it requires a suction machine to work, which draws outside air into the storage area. Therefore, it requires electricity as a power source, which increases its production and operating costs. At the same time, due to the action of the suction machine, the flour is still affected by the gas inside the storage area, which can easily cause the flour to disperse and pollute the surrounding air. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a dust removal device for flour processing. Utilizing the gravity of the flour itself, it autonomously detaches from the conveyor belt and is collected without requiring any other power source, thus offering advantages such as low production and operating costs. Furthermore, the device leverages the elasticity of a helical spring to cause an arc-shaped contact plate to press against the surface of the conveyor belt with a certain pressure, achieving deep cleaning of the conveyor belt surface and thereby improving its cleaning capabilities, thus solving the aforementioned technical problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dust cleaning device for flour processing, comprising a drive drum on a flour bag conveyor line, an annular conveyor belt fitted on the surface of the drive drum and capable of rotating with the drive drum, and a bottom support base plate located below one rotating end of the annular conveyor belt; further comprising an abutment-type flour collection mechanism, which internally comprises a bottom flour storage tank placed on the upper surface of the bottom support base and capable of storing flour, a top flour guide shell located at the bottom of one rotating end of the annular conveyor belt and capable of guiding and collecting flour, and an arc-shaped abutment plate disposed on one side of the top flour guide shell and abutting against the surface of the annular conveyor belt; and two elastic telescopic pressure mechanisms, which internally comprise a hollow cylindrical body, an inner movable plate located inside the hollow cylindrical body and capable of moving along the axial direction of the hollow cylindrical body, a helical spring located inside the hollow cylindrical body and generating an upward elastic force on the inner movable plate, and a fixed sleeve capable of moving with the inner movable plate and providing high support for the top flour guide shell.

[0007] Preferably, the contact-type flour collecting mechanism includes a bottom flour storage tank and a top flour guiding shell. The bottom flour storage tank has a bottom docking shell integrally formed with it at its top. The bottom flour storage tank has a bottom flour storage cavity for storing flour inside. The bottom docking shell has a bottom docking cavity with its bottom end connected to the bottom flour storage cavity and its top end open inside. The top flour guiding shell has a flour dropping cavity with its top end open inside. A fixed shaft structure is provided on each of the two outer sides of the top flour guiding shell. The bottom of the top flour guiding shell has a top docking shell that can be inserted into the bottom docking cavity. The top docking shell has a flour dropping outlet with its top end connected to the bottom end of the flour dropping cavity and its bottom end open inside. One side of the top flour guiding shell abuts against the bottom of one rotating end of the annular conveyor belt, and the top flour guiding shell has an arc-shaped abutment plate integrally formed with it and abutting against the surface of the annular conveyor belt.

[0008] Preferably, the center of gravity of the top flour-guided outer shell is located directly below the axis of the fixed shaft structure.

[0009] Preferably, the structural radius of the concave surface of the arc-shaped contact plate is the same as the structural radius of the annular conveyor belt at the drive drum.

[0010] Preferably, the elastic telescopic pressure mechanism includes a cylindrical hollow body. The bottom of the cylindrical hollow body is provided with a bottom fixing plate integrally formed with it. The interior of the cylindrical hollow body is provided with a longitudinal component movable cavity. The top of the cylindrical hollow body is provided with a rod through hole connecting the external space and the top of the longitudinal component movable cavity. An inner movable plate capable of moving axially along the longitudinal component movable cavity is placed inside the cylindrical hollow body located in the longitudinal component movable cavity. A helical spring in a compressed state is placed at the bottom of the inner movable plate. A longitudinal telescopic rod penetrating the inner movable plate is fixedly installed on the upper surface of the inner movable plate. The top of the longitudinal telescopic rod is provided with a fixing sleeve integrally formed with it and fixedly installed on the shaft of the fixed shaft structure.

[0011] Preferably, the structural shape of the perforated cross section of the rod is consistent with the structural shape of the cross section of the longitudinal telescopic rod, both being polygonal structures, and the structural dimensions of the perforated cross section of the rod match the structural dimensions of the cross section of the longitudinal telescopic rod.

[0012] Preferably, it also includes a threaded support height adjustment mechanism, which internally provides a first external thread rod and a second external thread rod connected to the bottom support base plate and the bottom fixing plate, a horizontal threaded sleeve threadedly connected to the first external thread rod and the second external thread rod and capable of changing the distance between the first external thread rod and the second external thread rod when rotating, and a polygonal limiting rod inserted at the axis of the first external thread rod and the second external thread rod and capable of preventing relative rotation between the first external thread rod and the second external thread rod.

[0013] Preferably, the threaded support height adjustment mechanism includes a horizontal threaded sleeve with a polygonal rotating structure on its outer circumference for easy turning, a first external threaded rod, and a second external threaded rod. One end of the horizontal threaded sleeve has a first internal threaded cavity with a concave structure, and the other end of the horizontal threaded sleeve has a second internal threaded cavity with a concave structure. The rod body of the first external threaded rod is installed inside the first internal threaded cavity through the first threaded structure, and the rod body of the second external threaded rod is installed inside the second internal threaded cavity through the second threaded structure. The first and second external threaded rods have polygonal limiting cavities with concave structures at their opposite ends. A polygonal limiting rod inserted into the polygonal limiting cavity is fixedly installed at the center of the horizontal threaded sleeve. One end of the first external threaded rod has a first connecting plate integrally formed with it and fixedly connected to the upper surface of the bottom support base plate, and one end of the second external threaded rod has a second connecting plate integrally formed with it and fixedly connected to the lower surface of the bottom fixing plate.

[0014] Preferably, the cross-sectional shape of the polygonal limiting cavity is consistent with the cross-sectional shape of the polygonal limiting rod, both being polygonal structures, and the structural dimensions of the cross-sectional shape of the polygonal limiting cavity match the structural dimensions of the cross-sectional shape of the polygonal limiting rod.

[0015] Preferably, the first thread structure includes an internal thread structure disposed inside the first internal thread cavity and an external thread structure disposed on the first external thread rod body, and the second thread structure includes an internal thread structure disposed inside the second internal thread cavity and an external thread structure disposed on the second external thread rod body, and the helical direction of the first thread structure is opposite to the helical direction of the second thread structure.

[0016] Compared with the prior art, the present invention provides a dust cleaning device for flour processing, which has the following beneficial effects:

[0017] Utilizing the flour's own gravity, it detaches from the conveyor belt and is collected autonomously without the need for other power sources, thus boasting low production and operating costs. Furthermore, the device uses the elasticity of a helical spring to cause an arc-shaped contact plate to press against the surface of the conveyor belt with a certain pressure, enabling deep cleaning of the conveyor belt surface and thereby improving the cleaning capability of the conveyor belt. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a perspective cross-sectional view of the present invention from a first viewpoint;

[0020] Figure 3 This is a three-dimensional cross-sectional view of the present invention from a second perspective;

[0021] Figure 4 This is a three-dimensional cross-sectional view of the contact-type flour collecting mechanism in this invention;

[0022] Figure 5 This is a three-dimensional cross-sectional view of the elastic telescopic pressure application mechanism in this invention;

[0023] Figure 6 This is a three-dimensional cross-sectional view of the threaded support height adjustment mechanism in this invention.

[0024] The components include: 1. Circular conveyor belt; 2. Drive drum; 3. Bottom support base plate; 4. Contact-type flour collection mechanism; 41. Bottom flour storage tank; 42. Bottom docking shell; 43. Bottom flour storage cavity; 44. Bottom docking cavity; 45. Top flour guide shell; 46. Top docking shell; 47. Flour drop outlet; 48. Flour drop cavity; 49. Arc-shaped contact plate; 410. Fixed shaft structure; 5. Elastic telescopic pressure mechanism; 51. Cylindrical hollow body; 52. Bottom fixed plate; 53. Longitudinal component movement. 54. Cavity; 55. Rod perforation; 56. Inner movable plate; 57. Helical spring; 58. Longitudinal telescopic rod; 69. Fixed sleeve; 60. Threaded support height adjustment mechanism; 61. Horizontal threaded sleeve; 62. No. 1 internal thread cavity; 63. No. 2 internal thread cavity; 64. No. 1 thread structure; 65. No. 2 thread structure; 66. No. 1 external thread rod; 67. No. 2 external thread rod; 68. No. 1 connecting plate; 69. No. 2 connecting plate; 610. Polygonal limiting cavity; 611. Polygonal limiting rod; 612. Polygonal rotating structure. Detailed Implementation

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0026] Please see Figure 1 , Figure 2 and Figure 3 A dust removal device for flour processing includes a drive drum 2 on a flour bag conveyor line, an annular conveyor belt 1 that is fitted on the surface of the drive drum 2 and can rotate with the drive drum 2, and a bottom support base plate 3 located below one rotating end of the annular conveyor belt 1. It should be noted that when the device is in operation, the rotation direction of the annular conveyor belt 1 needs to be such that the flour on the upper surface of the annular conveyor belt 1 can fall into the flour drop cavity 48. In other words, the flour bags on the upper surface of the annular conveyor belt 1 need to move from the end away from the top flour guide shell 45 to the end closer to the top flour guide shell 45. During the process of conveying flour bags, some flour powder will remain on the upper surface of the annular conveyor belt 1. The powder will enter the flour drop cavity 48 from far to near as the annular conveyor belt 1 rotates.

[0027] To implement the function of collecting falling flour powder, please refer to [link / reference needed]. Figure 1 , Figure 2 , Figure 3 and Figure 4A contact-type flour collection mechanism 4 is required. Inside, there is a bottom flour storage tank 41 placed on the upper surface of the bottom support base plate 3 to store flour, a top flour guide shell 45 located at the bottom of one of the rotating ends of the annular conveyor belt 1 to guide and collect flour, and an arc-shaped contact plate 49 set on the top side of the top flour guide shell 45 and in contact with the surface of the annular conveyor belt 1. When the flour powder moves to the rotation direction of the annular conveyor belt 1, it will fall into the flour drop cavity 48 under its own gravity, and finally enter the bottom flour storage cavity 43 for storage under the action of gravity. At the same time, since the bottom flour storage tank 41 and the top flour guide shell 45 are separate, the elastic telescopic pressure mechanism 5 only needs to bear the weight of the top flour guide shell 45, thereby reducing the elastic burden of the top flour guide shell 45.

[0028] For details regarding the specific structure of the contact-type flour collecting mechanism 4, please refer to [link / reference]. Figure 4 The system includes a bottom flour storage tank 41 and a top flour guiding shell 45. The bottom flour storage tank 41 has a bottom docking shell 42 integrally formed with it at its top. The bottom flour storage tank 41 has a bottom flour storage cavity 43 for storing flour. The bottom docking shell 42 has a bottom docking cavity 44 with its bottom end connected to the bottom flour storage cavity 43 and its top end open. The top flour guiding shell 45 has a flour drop cavity 48 with its top end open. A fixed shaft structure 410 is provided on each of the two outer sides of the top flour guiding shell 45. The bottom of the top flour guiding shell 45 is... A top docking housing 46 is inserted into the bottom docking cavity 44. The top docking housing 46 has a flour drop outlet 47 with its top end connected to the bottom end of the flour drop cavity 48 and its bottom end open. One side of the top flour guide housing 45 abuts against one of the rotating ends of the annular conveyor belt 1. The top flour guide housing 45 has an arc-shaped contact plate 49 integral with it and abuts against the surface of the annular conveyor belt 1. The center of gravity of the top flour guide housing 45 is located directly below the axis of the fixed shaft structure 410. The structural radius of the concave surface of the arc-shaped contact plate 49 is the same as the structural radius of the annular conveyor belt 1 at the drive drum 2.

[0029] To ensure the curved contact plate applies pressure to the conveyor belt surface for thorough cleaning, please refer to [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 and Figure 5Two elastic telescopic pressure mechanisms 5 need to be set up. Each mechanism has a hollow cylindrical body 51, an inner movable plate 55 located inside the hollow cylindrical body 51 and capable of moving along the axis of the hollow cylindrical body 51, a helical spring 56 located inside the hollow cylindrical body 51 and generating an upward elastic force on the inner movable plate 55, and a fixed sleeve 58 that moves with the inner movable plate 55 and provides high support for the top flour guide shell 45. Due to the elastic support effect of the helical spring 56, the arc-shaped contact plate 49 will abut against the surface of the rotating part of the annular conveyor belt 1 with a certain elastic pressure, thereby increasing the cleaning power of the arc-shaped contact plate 49 on the powder adhering to the surface of the annular conveyor belt 1, and thus improving the cleaning ability of the conveyor belt.

[0030] For details regarding the specific structure of the elastic telescopic pressure mechanism 5, please refer to [link / reference needed]. Figure 5 The system includes a cylindrical hollow body 51, with a bottom fixing plate 52 integrally formed with the bottom of the cylindrical hollow body 51. A longitudinal component movable cavity 53 is provided inside the cylindrical hollow body 51. A rod through-hole 54 is provided at the top of the cylindrical hollow body 51, connecting the external space and the top of the longitudinal component movable cavity 53. An inner movable plate 55, capable of moving axially along the longitudinal component movable cavity 53, is placed inside the cylindrical hollow body 51 within the longitudinal component movable cavity 53. A compressed helical spring 56 is placed at the bottom of the inner movable plate 55. A longitudinal telescopic rod 57, penetrating the inner movable plate 55, is fixedly installed on the upper surface of the inner movable plate 55. A fixing sleeve 58, integrally formed with the longitudinal telescopic rod 57 and fixedly installed on the shaft of the fixed shaft structure 410, is provided at the top of the longitudinal telescopic rod 57. The cross-sectional shape of the rod through-hole 54 is consistent with the cross-sectional shape of the longitudinal telescopic rod 57, both being polygonal structures, and the cross-sectional dimensions of the rod through-hole 54 match the cross-sectional dimensions of the longitudinal telescopic rod 57.

[0031] To enable the adjustment of the support height, and thus the adjustment of the elastic strength of the coil spring 56, please refer to [link / reference needed]. Figure 1 , Figure 2 , Figure 3 and Figure 6A threaded support height adjustment mechanism 6 needs to be installed. Inside, there are a first external threaded rod 66 and a second external threaded rod 67 connected to the bottom support base plate 3 and the bottom fixing plate 52; a horizontal threaded sleeve 61 threadedly connected to the first and second external threaded rods 66 and 67, capable of changing the distance between them during rotation; and a polygonal limiting rod 611 inserted at the axis of the first and second external threaded rods 66 and 67, preventing relative rotation between them. When the two polygonal rotating structures 612 rotate synchronously, the horizontal threaded sleeve 61 will rotate in a specific direction. Since the cross-sectional shape of the polygonal limiting cavity 610 is consistent with the cross-sectional shape of the polygonal limiting rod 611 (both are polygonal structures), and the polygonal limiting cavity 610... The structural dimensions of the cross section 10 match the structural dimensions of the cross section of the polygonal limiting rod 611. The first thread structure 64 includes an internal thread structure disposed inside the first internal thread cavity 62 and an external thread structure disposed on the first external thread rod 66. The second thread structure 65 includes an internal thread structure disposed inside the second internal thread cavity 63 and an external thread structure disposed on the second external thread rod 67. The helical direction of the first thread structure 64 is opposite to that of the second thread structure 65. At this time, the first external thread rod 66 and the second external thread rod 67 will move closer or further apart, thereby adjusting the support height. The support height will act on the helical spring 56 through the cylindrical hollow body 51, causing the helical spring 56 to be compressed or extended, thereby realizing the function of adjusting the elastic strength of the helical spring 56.

[0032] For details regarding the specific structure of the threaded support height adjustment mechanism 6, please refer to [link / reference needed]. Figure 6The device includes a horizontal threaded sleeve 61 with a polygonal rotating structure 612 on its outer circumference for easy screwing, a first external threaded rod 66, and a second external threaded rod 67. One end of the horizontal threaded sleeve 61 has a first internal threaded cavity 62 with a concave structure, and the other end of the horizontal threaded sleeve 61 has a second internal threaded cavity 63 with a concave structure. The rod of the first external threaded rod 66 is installed inside the first internal threaded cavity 62 through a first threaded structure 64, and the rod of the second external threaded rod 67 is installed in the second internal threaded cavity through a second threaded structure 65. Inside 63, the first external threaded rod 66 and the second external threaded rod 67 are provided with concave polygonal limiting cavities 610 at their opposite ends. A polygonal limiting rod 611 inserted into the polygonal limiting cavity 610 is fixedly installed at the center of the horizontal threaded sleeve 61. One end of the first external threaded rod 66 is provided with a first connecting plate 68 that is integral with it and fixedly connected to the upper surface of the bottom support base plate 3. One end of the second external threaded rod 67 is provided with a second connecting plate 69 that is integral with it and fixedly connected to the lower surface of the bottom fixing plate 52.

[0033] During operation, the rotation direction of the annular conveyor belt 1 is required to ensure that the flour on the upper surface of the annular conveyor belt 1 falls into the flour dropping cavity 48. During the process of conveying flour bags, some flour powder will remain on the upper surface of the annular conveyor belt 1. The powder will enter the flour dropping cavity 48 from far to near as the annular conveyor belt 1 rotates. When the flour powder moves to the rotation direction of the annular conveyor belt 1, it will fall into the flour dropping cavity 48 under its own gravity. Finally, under the action of gravity, it will enter the bottom flour storage cavity 43 for storage. At the same time, the arc-shaped contact plate 49 can scrape off the attached flour powder.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A dust removal device for flour processing, comprising a drive drum (2) on a flour bag conveyor line, an annular conveyor belt (1) fitted onto the surface of the drive drum (2) and capable of rotating with the drive drum (2), and a bottom support base plate (3) located below one rotating end of the annular conveyor belt (1), characterized in that: It also includes, The contact-type flour collection mechanism (4) is provided with a bottom flour storage tank (41) placed on the upper surface of the bottom support base plate (3) and capable of storing flour, a top flour guide shell (45) located at the bottom of a rotating end of the annular conveyor belt (1) and capable of guiding and collecting flour, and an arc-shaped contact plate (49) disposed on the top of one side of the top flour guide shell (45) and in contact with the surface of the annular conveyor belt (1). And two elastic telescopic pressure mechanisms (5), which are provided with a hollow cylindrical body (51) with a hollow interior, an inner movable plate (55) located inside the hollow cylindrical body (51) and capable of moving along the axial direction of the hollow cylindrical body (51), a helical spring (56) located inside the hollow cylindrical body (51) and generating an upward elastic force on the inner movable plate (55), and a fixed sleeve (58) capable of moving with the inner movable plate (55) and providing high support for the top flour guide shell (45); The contact-type flour collecting mechanism (4) includes a bottom flour storage tank (41) and a top flour guiding shell (45). The bottom flour storage tank (41) has a bottom docking shell (42) integrally formed with it at its top. The bottom flour storage tank (41) has a bottom flour storage cavity (43) for storing flour inside. The bottom docking shell (42) has a bottom docking cavity (44) with its bottom end connected to the bottom flour storage cavity (43) and its top end open. The top flour guiding shell (45) has a flour dropping cavity (48) with its top end open. A fixed shaft structure (410) is provided on each of the two outer sides of the outer shell (45). The bottom of the top flour guiding outer shell (45) is provided with a top docking shell (46) that can be inserted into the bottom docking cavity (44). The interior of the top docking shell (46) is provided with a flour dropping port (47) whose top end is connected to the bottom end of the flour dropping cavity (48) and whose bottom end is open. One side of the top flour guiding outer shell (45) abuts against the bottom of one of the rotating ends of the annular conveyor belt (1). The top flour guiding outer shell (45) is provided with an arc-shaped contact plate (49) that is integral with it and abuts against the surface of the annular conveyor belt (1).

2. The dust removal device for flour processing according to claim 1, characterized in that: The center of gravity of the top flour guide shell (45) is located directly below the axis of the fixed shaft structure (410).

3. The dust removal device for flour processing according to claim 2, characterized in that: The structural radius of the concave surface of the arc-shaped contact plate (49) is the same as the structural radius of the annular conveyor belt (1) at the drive drum (2).

4. The dust removal device for flour processing according to claim 3, characterized in that: The elastic telescopic pressure mechanism (5) includes a cylindrical hollow body (51). The bottom of the cylindrical hollow body (51) is provided with a bottom fixing plate (52) integral with it. The interior of the cylindrical hollow body (51) is provided with a longitudinal component movable cavity (53). The top of the cylindrical hollow body (51) is provided with a rod through hole (54) connecting the external space and the top of the longitudinal component movable cavity (53). The cylindrical hollow body (51) has an inner movable plate (55) that can move along the axial direction of the longitudinal component movable cavity (53) placed inside the longitudinal component movable cavity (53). The bottom of the inner movable plate (55) is provided with a coil spring (56) in a compressed state. The upper surface of the inner movable plate (55) is fixedly installed with a longitudinal telescopic rod (57) that passes through the inner movable plate (55). The top of the longitudinal telescopic rod (57) is provided with a fixing sleeve (58) integral with it and fixedly installed on the shaft of the fixed shaft structure (410).

5. A dust-generating cleaning device for flour processing according to claim 4, characterized in that: The cross-sectional shape of the rod through hole (54) is consistent with the cross-sectional shape of the longitudinal telescopic rod (57), both being polygonal structures, and the structural dimensions of the cross-sectional shape of the rod through hole (54) match the structural dimensions of the cross-sectional shape of the longitudinal telescopic rod (57).

6. The dust removal device for flour processing according to claim 5, characterized in that: It also includes a threaded support height adjustment mechanism (6), which has a first external thread rod (66) and a second external thread rod (67) connected to the bottom support base plate (3) and the bottom fixing plate (52), a horizontal threaded sleeve (61) threadedly connected to the first external thread rod (66) and the second external thread rod (67) and capable of changing the distance between the first external thread rod (66) and the second external thread rod (67) when rotating, and a polygonal limiting rod (611) inserted at the axis of the first external thread rod (66) and the second external thread rod (67) and capable of preventing relative rotation between the first external thread rod (66) and the second external thread rod (67).

7. A dust-generating cleaning device for flour processing according to claim 6, characterized in that: The threaded support height adjustment mechanism (6) includes a horizontal threaded sleeve (61) with a polygonal rotating structure (612) on its outer circumference for easy turning, a first external threaded rod (66), and a second external threaded rod (67). One end of the horizontal threaded sleeve (61) has a first internal threaded cavity (62) with a concave structure, and the other end of the horizontal threaded sleeve (61) has a second internal threaded cavity (63) with a concave structure. The rod of the first external threaded rod (66) is installed inside the first internal threaded cavity (62) through a first threaded structure (64), and the rod of the second external threaded rod (67) is installed through a second threaded structure (65). Inside the second internal thread cavity (63), the first external thread rod (66) and the second external thread rod (67) are provided with concave polygonal limiting cavities (610) at their opposite ends. A polygonal limiting rod (611) inserted into the polygonal limiting cavity (610) is fixedly installed at the center of the horizontal threaded sleeve (61). One end of the first external thread rod (66) is provided with a first connecting plate (68) that is integral with it and fixedly connected to the upper surface of the bottom support base plate (3). One end of the second external thread rod (67) is provided with a second connecting plate (69) that is integral with it and fixedly connected to the lower surface of the bottom fixing plate (52).

8. A dust-generating cleaning device for flour processing according to claim 7, characterized in that: The cross-sectional shape of the polygonal limiting cavity (610) is consistent with the cross-sectional shape of the polygonal limiting rod (611), both being polygonal structures, and the structural dimensions of the cross-section of the polygonal limiting cavity (610) match the structural dimensions of the cross-section of the polygonal limiting rod (611).

9. A dust-generating cleaning device for flour processing according to claim 8, characterized in that: The first thread structure (64) includes an internal thread structure disposed inside the first internal thread cavity (62) and an external thread structure disposed on the first external thread rod (66). The second thread structure (65) includes an internal thread structure disposed inside the second internal thread cavity (63) and an external thread structure disposed on the second external thread rod (67). The helical direction of the first thread structure (64) is opposite to the helical direction of the second thread structure (65).

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