A ball mill cement raw meal grinding particle size measuring system and a measuring method thereof

Abstract

The application relates to the technical field of cement raw material grinding particle size measurement, and discloses a ball mill cement raw material grinding particle size measurement system and a measurement method thereof, which comprises a detection box, a rotary transmission unit and a rotary detection unit, a feeding hopper is vertically and penetratively arranged on the detection box; a servo motor is arranged in the inner cavity of the detection box, a six-sided box is connected with the servo motor in a power mode, an upper tooth plate and a lower tooth plate which are mutually attached are movably arranged in the six-sided box, and six side walls of the six-sided box are movably arranged. After data collection is accepted, the servo motor continues to work to drive the six-sided box to rotate, the two follow-up rods can be driven to rotate in the rotating process of the six-sided box, so that the filter cylinder and the collecting cone cylinder can be driven to rotate vertically downward to discharge powder; the powder is discharged under the action of a flow guide inclined table, when the six-sided box rotates, the outer gear ring drives the transmission gear to rotate, so that the blowing impeller is driven to rotate to blow air to ensure the cleanliness of the filter cylinder and the collecting cone cylinder.

Description

Technical Field

[0001] This invention relates to the field of cement raw meal grinding particle size measurement technology, specifically to a ball mill cement raw meal grinding particle size measurement system and its measurement method. Background Technology

[0002] Currently, in the remediation of polluted sites in reservoir inundation areas, it is necessary to build cement processing plants in the surrounding areas of the reservoir. Generally, tailings waste is introduced as raw material to produce cement to meet the special quality requirements of national key projects such as surrounding hydropower stations, railways, highways, and major bridges. Therefore, all remaining tailings can be cleaned up and transported to cement plants for resource utilization. However, due to the importance of reservoir construction, it is necessary to establish standards and equipment for particle size testing in cement production.

[0003] A search revealed a powder particle size detection device in publication number CN 107525748 A. The device includes a rotating disk, a base below it, a support plate and a motor disposed inside the base. The rotating disk holds a pressing plate, a top cover, an inspection sieve, and a base plate stacked from top to bottom. Each pressing plate includes several claw plates evenly distributed circumferentially, and each claw plate has a through hole. The rotating disk has several threaded rods evenly distributed circumferentially, each threaded rod corresponding to one of the through holes, with nuts screwed onto the through holes. The bottom surface of the rotating disk is fixed with three connecting rods evenly distributed circumferentially, the three connecting rods including one driving connecting rod and two driven connecting rods.

[0004] However, the screen plates in this technical solution are all stacked together, which makes it impossible to handle the detection of different particle sizes. Furthermore, the powder residue generated during screening needs to be manually cleaned by the operator, which is very inconvenient. Summary of the Invention

[0005] The purpose of this invention is to provide a ball mill cement raw material grinding particle size measurement system and method, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a ball mill cement raw material grinding particle size measurement system, comprising a frame and a hexagonal box disposed in the middle of the inner cavity of the frame; a cylinder is vertically fixedly installed at the upper left corner of the frame, a support is fixedly connected to the lower end of the piston rod of the cylinder, and a feeding hopper is vertically fixedly installed at the middle right side of the support; a servo motor is vertically fixedly installed at the middle position of the upper part of the inner cavity of the frame, and a rectangular transmission rod is vertically fixedly installed at the drive end of the servo motor; a base plate is horizontally disposed below the hexagonal box;

[0007] Four springs arranged in a matrix are vertically fixed to the bottom of the base plate around its four sides; a vibration motor is fixedly connected to the middle of the bottom surface of the base plate; a column is fixedly installed at the middle of the upper part of the base plate, the column moves vertically upward and passes through the inner ring of the bearing embedded in the middle of the bottom of the hexagonal box; an upper gear plate and a lower gear plate are horizontally fixedly installed on the upper part of the column, and an outer gear ring is horizontally fixedly sleeved at the middle of the outer wall of the lower gear plate.

[0008] Each side wall of the hexagonal box has a horizontally movable follower rod extending through its upper and lower parts. Weighing sensors and follower gears are fixedly installed at the left and right ends of the two follower rods. A filter cylinder and a collecting cone are vertically fixed downwards on the weighing sensors at the left ends of the two follower rods, respectively. The follower gears at the right ends of the two follower rods mesh with the upper and lower gear disks, respectively.

[0009] A connecting rod is horizontally movable through the middle of each side wall of the hexagonal box. A transmission gear is fixedly connected to the end of the connecting rod placed inside the hexagonal box. The transmission gear meshes with the upper part of the external gear ring. A blower impeller is fixedly installed at the outer end of each connecting rod.

[0010] In a preferred embodiment of the present invention, a rectangular sleeve is fixedly connected vertically upward at the middle position of the upper part of the hexagonal box, and the rectangular transmission rod is movably inserted into the rectangular sleeve.

[0011] In a preferred embodiment of the present invention, a spring sleeve is fixedly connected to the lower end of the spring, and the lower end of the spring sleeve is vertically fixed to the base plate.

[0012] In a preferred embodiment of the present invention, a powder discharge port is provided on the lower left side of the frame, and a flow guide ramp is fixedly connected to the bottom of the inner cavity of the frame to the right of the powder discharge port.

[0013] In a preferred embodiment of the present invention, the filter cylinder and the collecting cone are vertically aligned, and a filter screen plate with a different mesh size is fixed at the bottom of each filter cylinder.

[0014] In a preferred embodiment of the present invention, a mesh cover is fixedly installed on each side wall of the hexagonal box, and the blower impeller is disposed in the inner cavity of the mesh cover.

[0015] In a preferred embodiment of the present invention, the filter cylinder and the collecting cone are both vertically aligned with the feeding hopper, and the filter screen and the screen cover are both stainless steel mesh components.

[0016] As a preferred embodiment of the present invention, the detection method of the ball mill cement raw material grinding particle size measurement system is as follows:

[0017] S1: First, the servo motor drives the rectangular sleeve in the middle of the upper part of the hexagonal box to rotate together through the rectangular transmission rod. During the rotation of the hexagonal box, the two follower rods and connecting rods distributed on the outer wall of the hexagonal box will mesh and rotate under the action of the upper gear plate, the lower gear plate and the outer gear ring.

[0018] S2: When the hexagonal box is rotated to a certain extent, the filter cylinder and the collecting cone on one side wall of the hexagonal box will both be in a vertical opening facing upwards.

[0019] S3: The cylinder drives the feeding hopper to descend until it is close to the filter cylinder, releasing the powder into the filter cylinder. The weight of the powder in this state is measured by the weighing sensor. Then, the vibration motor is started to drive the entire hexagonal box to vibrate, which ensures that the powder in the filter cylinder is screened out from the filter screen and falls into the collecting cone. After the screening is completed, the weight of the filter cylinder and the weight of the collecting cone are measured again for data analysis.

[0020] S4: After the data acquisition is received, the servo motor continues to work to drive the hexagonal box to rotate. During the rotation of the hexagonal box, it can drive the two follower rods to rotate, which can drive the filter cylinder and the collecting cone to rotate vertically downward to discharge the powder; the powder is discharged under the action of the guide ramp.

[0021] S5: When the hexagonal box rotates, the external gear ring drives the transmission gear to rotate, which in turn drives the blower impeller to rotate and blow air to ensure the cleanliness of the filter cartridge and the collection cone.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. In this invention, the cylinder drives the feeding hopper to descend until it approaches the filter cylinder, releasing powder into the filter cylinder. The weight of the powder in this state is measured by a weighing sensor. Then, the vibration motor is started to drive the entire hexagonal box to vibrate, thereby ensuring that the powder in the filter cylinder is screened out from the filter screen and falls into the collecting cone. After the screening is completed, the weight of the filter cylinder and the weight of the collecting cone are measured again for data analysis.

[0024] 2. After data acquisition is received, the servo motor continues to work to drive the hexagonal box to rotate. During the rotation of the hexagonal box, it can drive the two follower rods to rotate, thereby driving the filter cylinder and the collecting cone to rotate vertically downward to discharge the powder. The powder is discharged under the action of the guide ramp. After the hexagonal box rotates, the external gear ring drives the transmission gear to rotate, thereby driving the blower impeller to rotate and blow air to ensure the cleanliness of the filter cylinder and the collecting cone. Attached Figure Description

[0025] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0026] Figure 1 This is a schematic diagram of the overall structure of a ball mill cement raw material grinding particle size measurement system and its measurement method according to the present invention;

[0027] Figure 2 This is a schematic diagram of the external toothed ring of the ball mill cement raw material grinding particle size measurement system and measurement method of the present invention;

[0028] Figure 3 This is a top view of the distribution of the filter cylinder on the outer wall of the hexagonal box in the ball mill cement raw material grinding particle size measurement system and method of the present invention.

[0029] Figure 4 This invention relates to a ball mill cement raw material grinding particle size measurement system and method. Figure 1 A magnified structural diagram at point A;

[0030] Figure 5 This is a bottom view of the base plate structure of the ball mill cement raw material grinding particle size measurement system and measurement method of the present invention;

[0031] Figure 6 This is a top view of the distribution of the blowing impeller on the side wall of the hexagonal box in the ball mill cement raw material grinding particle size measurement system and measurement method of the present invention.

[0032] In the picture:

[0033] 100. Inspection box; 101. Feeding hopper; 102. Cylinder; 103. Support platform; 104. Powder discharge port; 105. Guide ramp; 106. Base plate; 106a. Spring sleeve; 106b. Spring; 107. Vibration motor;

[0034] 200. Rotary transmission unit; 201. Hexagonal box; 201a. Rectangular sleeve; 202. Servo motor; 202a. Rectangular transmission rod; 203. Upper gear plate; 204. Lower gear plate; 204a. Column;

[0035] 300. Rotary detection unit; 301. Collecting cone; 302. Filter cylinder; 302a. Filter screen; 303. Weighing sensor; 303a. Follower rod; 303b. Follower gear; 304. Connecting rod; 304a. Transmission gear; 304b. External gear ring; 305. Mesh cover; 305a. Blower impeller.

[0036] The instruments in this invention can all be obtained through market purchase or private customization. Detailed Implementation

[0037] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0038] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] Example 1:

[0040] Please see Figure 1-6 This invention provides a technical solution: a ball mill cement raw material grinding particle size measurement system, including a detection chamber 100 and a hexagonal box 201 disposed in the middle of the inner cavity of the detection chamber 100; a cylinder 102 is vertically fixedly installed at the upper left corner of the detection chamber 100, and a support platform 103 is fixedly connected to the lower end of the piston rod of the cylinder 102; a feeding hopper 101 is vertically fixedly installed at the middle right side of the support platform 103; a servo motor 202 is vertically fixedly installed at the middle position of the upper part of the inner cavity of the detection chamber 100, and a rectangular transmission rod 202a is vertically fixedly installed at the drive end of the servo motor 202; a base plate 106 is horizontally disposed below the hexagonal box 201;

[0041] Four springs 106b arranged in a matrix are vertically fixed to the bottom of the base plate 106. A vibration motor 107 is fixedly connected to the middle of the bottom surface of the base plate 106. A column 204a is fixedly installed at the middle of the upper part of the base plate 106. The column 204a moves vertically upward and passes through the inner ring of the bearing embedded in the middle of the bottom of the hexagonal box 201. An upper gear plate 203 and a lower gear plate 204 are horizontally fixedly installed on the upper part of the column 204a. An outer gear ring 304b is horizontally fixedly sleeved at the middle of the outer wall of the lower gear plate 204.

[0042] Example 2:

[0043] Please see Figure 1-6 This invention provides a technical solution: a particle size measurement system for cement raw material grinding in a ball mill.

[0044] Each side wall of the hexagonal box 201 has a horizontally movable follower rod 303a extending through its upper and lower parts. Weighing sensors 303 and follower gears 303b are fixedly installed at the left and right ends of the two follower rods 303a. A filter cylinder 302 and a collecting cone 301 are vertically fixed downward on the weighing sensors 303 at the left end of the two follower rods 303a, respectively. The follower gears 303b at the right end of the two follower rods 303a mesh with the upper gear plate 203 and the lower gear plate 204, respectively.

[0045] A connecting rod 304 is horizontally movably inserted through the middle of each side wall of the hexagonal box 201. The end of the connecting rod 304 located in the inner cavity of the hexagonal box 201 is fixedly connected to a transmission gear 304a, which meshes with the upper part of the external gear ring 304b. A blower impeller 305a is fixedly installed at the outer end of each connecting rod 304.

[0046] In this embodiment, the cylinder 102 operates to drive the feeding hopper 101 to descend until it approaches the filter cylinder 302, releasing powder into the filter cylinder 302. The weight of the powder in this state is measured by the weighing sensor 303. Then, the vibration motor 107 is started to drive the entire hexagonal box 201 to vibrate, thereby ensuring that the powder in the filter cylinder 302 is screened out from the filter screen plate 302a and falls into the collecting cone 301. After the screening is completed, the weight of the filter cylinder 302 and the weight of the collecting cone 301 are measured again for data analysis.

[0047] In this embodiment, after data acquisition is received, the servo motor 202 continues to work to drive the hexagonal box 201 to rotate. During the rotation of the hexagonal box 201, it can drive the two follower rods 303a to rotate, thereby driving the filter cylinder 302 and the collecting cone 301 to rotate vertically downward to discharge the powder. Under the action of the guide ramp 105, the powder is discharged. After the hexagonal box 201 rotates, the external gear ring 304b drives the transmission gear 304a to rotate, thereby driving the blower impeller 305a to rotate and blow air to ensure the cleanliness of the filter cylinder 302 and the collecting cone 301.

[0048] Example 3:

[0049] Please see Figure 1-6 This invention provides a technical solution: a particle size measurement system for cement raw material grinding in a ball mill.

[0050] A rectangular sleeve 201a is vertically fixedly connected to the middle of the upper part of the hexagonal box 201. A rectangular transmission rod 202a is movably inserted into the rectangular sleeve 201a. The lower end of the spring 106b is fixedly connected to the spring sleeve 106a. The lower end of the spring sleeve 106a is vertically fixed on the base plate 106. The spring 106b can ensure that it provides a buffering effect when the vibration motor 107 is working.

[0051] Furthermore, a powder discharge port 104 is provided on the lower left side of the detection chamber 100. A flow guide ramp 105 is fixedly connected to the bottom of the inner cavity of the detection chamber 100 to the right of the powder discharge port 104. The filter cylinder 302 and the collecting cone 301 are vertically aligned, which makes it convenient for operators to collect the powder directly through the powder discharge port 104. Each filter cylinder 302 has a filter screen plate 302a with a different mesh size fixed at its bottom. The use of filter screen plates 302a with different mesh sizes can achieve a more detailed particle size measurement effect.

[0052] Furthermore, a mesh cover 305 is fixedly installed on each side wall of the hexagonal box 201, and a blower impeller 305a is set in the inner cavity of the mesh cover 305. The filter cylinder 302 and the collecting cone 301 are both vertically aligned with the feeding hopper 101. The filter screen 302a and the mesh cover 305 are both stainless steel mesh parts, which have a longer service life and are lighter in weight.

[0053] In this embodiment, a detection method for a ball mill cement raw meal grinding particle size measurement system is as follows:

[0054] S1: First, the servo motor 202 works to drive the rectangular sleeve 201a at the middle position of the upper part of the hexagonal box 201 to rotate together through the rectangular transmission rod 202a. During the rotation of the hexagonal box 201, the two follower rods 303a and the connecting rod 304 distributed on the outer wall of the hexagonal box 201 will mesh and rotate under the action of the upper gear plate 203, the lower gear plate 204 and the outer gear ring 304b.

[0055] S2: When the hexagonal box 201 rotates to a certain extent, the filter cylinder 302 and the collecting cone 301 on one side wall of the hexagonal box 201 will both be in a vertical opening facing upwards.

[0056] S3: The cylinder 102 operates to drive the feeding hopper 101 to descend until it approaches the filter cylinder 302, releasing the powder into the filter cylinder 302. The weight of the powder in this state is measured by the weighing sensor 303. Then, the vibration motor 107 is started to drive the entire hexagonal box 201 to vibrate, thereby ensuring that the powder in the filter cylinder 302 is screened out from the filter screen plate 302a and falls into the collecting cone 301. After the screening is completed, the weight of the filter cylinder 302 and the weight of the collecting cone 301 are measured again for data analysis.

[0057] S4: After the data acquisition is received, the servo motor 202 continues to work to drive the hexagonal box 201 to rotate. During the rotation of the hexagonal box 201, it can drive the two follower rods 303a to rotate, thereby driving the filter cylinder 302 and the collecting cone 301 to rotate vertically downward to discharge the powder; under the action of the guide inclined table 105, the powder is discharged.

[0058] S5: When the hexagonal box 201 rotates, the external gear ring 304b drives the transmission gear 304a to rotate, thereby driving the blower impeller 305a to rotate and blow air to ensure the cleanliness of the filter cartridge 302 and the collection cone 301.

[0059] When using a ball mill cement raw meal grinding particle size measurement system and method, it should be noted that the present invention is a ball mill cement raw meal grinding particle size measurement system and method, and all components are general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0060] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0061] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A particle size measurement system for cement raw meal grinding in a ball mill, characterized in that: include, A testing chamber (100), on which a feeding hopper (101) is vertically installed; and, The rotary transmission unit (200) includes a servo motor (202) installed inside the detection housing (100), and a hexagonal box (201) powered by the servo motor (202). The hexagonal box (201) also contains a mutually fitted upper toothed plate and a lower toothed plate; and... Rotary detection units (300) are movably mounted on the six side walls of the hexagonal box (201), and each rotary detection unit is driven by the upper and lower toothed plates; A base plate (106) is horizontally arranged below the hexagonal box (201). Four springs (106b) are vertically fixedly connected downwards around the bottom of the base plate (106) in a matrix arrangement. A vibration motor (107) is fixedly connected to the middle part of the bottom surface of the base plate (106). A column (204a) is fixedly installed upwards at the middle position of the upper part of the base plate (106). The column (204a) moves vertically upwards and passes through the inner ring of the bearing embedded in the middle position of the bottom of the hexagonal box (201). An upper gear plate (203) and a lower gear plate (204) are horizontally fixedly installed on the upper part of the column (204a). An outer gear ring (304b) is horizontally fixedly sleeved at the middle of the outer wall of the lower gear plate (204). A spring sleeve (106a) is fixedly connected to the lower end of the spring (106b). The lower end of the spring sleeve (106a) is vertically fixed on the base plate (106). A rectangular sleeve (201a) is vertically fixedly connected to the middle position of the upper part of the hexagonal box (201). A rectangular transmission rod (202a) is movably inserted into the rectangular sleeve (201a). A powder discharge port (104) is opened on the lower left side of the detection box (100). A flow guide ramp (105) is fixedly connected to the bottom of the inner cavity of the detection box (100) to the right of the powder discharge port (104).

2. The ball mill cement raw material grinding particle size measurement system according to claim 1, characterized in that, A cylinder (102) is fixedly installed vertically downward at the upper left corner of the detection box (100). A support platform (103) is fixedly connected to the lower end of the piston rod of the cylinder (102). A material hopper (101) is fixedly installed vertically downward at the middle right side of the support platform (103). A servo motor (202) is fixedly installed vertically downward at the middle position of the upper part of the inner cavity of the detection box (100). A rectangular transmission rod (202a) is fixedly installed vertically downward at the drive end of the servo motor (202).

3. A ball mill cement raw material grinding particle size measurement system according to claim 1 or 2, characterized in that, Each side wall of the hexagonal box (201) has a horizontally movable follower rod (303a) extending through its upper and lower parts. Weighing sensors (303) and follower gears (303b) are fixedly installed at the left and right ends of the two follower rods (303a). A filter cylinder (302) and a collection cone (301) are fixed vertically downward on the weighing sensors (303) at the left end of the two follower rods (303a). The follower gears (303b) at the right end of the two follower rods (303a) mesh with the upper gear plate (203) and the lower gear plate (204) respectively.

4. The ball mill cement raw material grinding particle size measurement system according to claim 3, characterized in that, A connecting rod (304) is horizontally movably inserted through the middle of each side wall of the hexagonal box (201). A transmission gear (304a) is fixedly connected to the end of the connecting rod (304) placed in the inner cavity of the hexagonal box (201). The transmission gear (304a) is meshed with the upper part of the external gear ring (304b). A blower impeller (305a) is fixedly installed at the outer end of each connecting rod (304). A mesh cover (305) is fixedly installed on each side wall of the hexagonal box (201). The blower impeller (305a) is located in the inner cavity of the mesh cover (305).

5. The ball mill cement raw material grinding particle size measurement system according to claim 4, characterized in that, The filter cylinder (302) and the collecting cone (301) are both vertically aligned with the feeding hopper (101), and the filter screen (302a) and the screen cover (305) are both stainless steel mesh.

6. The ball mill cement raw material grinding particle size measurement system according to claim 5, characterized in that, The filter cylinder (302) and the collecting cone (301) are vertically aligned, and each filter cylinder (302) has a filter screen plate (302a) with a different mesh size fixed at its bottom.

7. A detection method for a ball mill cement raw material grinding particle size measurement system, characterized in that: Includes the ball mill cement raw material grinding particle size measurement system according to any one of claims 1 to 6; and, S1: First, the servo motor (202) drives the rectangular sleeve (201a) at the middle position of the upper part of the hexagonal box (201) to rotate together through the rectangular transmission rod (202a). During the rotation of the hexagonal box (201), the two follower rods (303a) and the connecting rod (304) distributed on the outer wall of the hexagonal box (201) will mesh and rotate under the action of the upper gear plate (203), the lower gear plate (204) and the outer gear ring (304b). S2: When the hexagonal box (201) rotates to a certain extent, the filter cylinder (302) and the collecting cone (301) on one side wall of the hexagonal box (201) will both be in a vertically upward state; S3: The cylinder (102) works to drive the feeding hopper (101) to descend until it is close to the filter cylinder (302), and releases the powder into the filter cylinder (302). The weight in this state is measured by the weighing sensor (303). Then the vibration motor (107) is started to drive the entire hexagonal box (201) to vibrate, so as to ensure that the powder in the filter cylinder (302) is screened out from the filter screen plate 302a and falls into the collection cone (301). After the screening is completed, the weight of the filter cylinder (302) and the weight of the collection cone (301) are weighed again for data analysis. S4: After the data acquisition is received, the servo motor (202) continues to work to drive the hexagonal box (201) to rotate. During the rotation of the hexagonal box (201), it can drive the two follower rods (303a) to rotate, thereby driving the filter cylinder (302) and the collecting cone (301) to rotate vertically downward to discharge the powder; under the action of the guide ramp (105), the powder is discharged. S5: When the hexagonal box (201) rotates, the external gear ring (304b) drives the transmission gear (304a) to rotate, thereby driving the blower impeller (305a) to rotate and blow air to ensure the cleanliness of the filter cartridge (302) and the collection cone (301).

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