A rubbing mill of a rice polishing combined rice mill

Abstract

This invention belongs to the field of pulverizer technology, and specifically relates to a pulverizer for a rice hulling and milling combined machine, comprising: a machine body and a cyclone separator. The machine body includes: a pulverizer housing; a blower housing; a bearing seat; a blower shaft installed in the bearing seat, with one end extending through the bearing seat and into the blower housing to be fitted with an impeller shaft seat; and an exhaust port located on the side of the blower housing away from the bearing seat, with an exhaust pipe connected between the exhaust port and the cyclone separator. A gap is provided between the end of the blower shaft and the exhaust port, and between the end of the impeller shaft seat and the exhaust port. The beneficial effects of this invention are: the gap between the blower shaft and the impeller shaft seat and the exhaust port makes the exhaust more efficient. Compared with traditional technology, during pulverizer operation, dust-laden air passing through the exhaust pipe is not obstructed by the shaft when passing through the exhaust port, preventing impurities from accumulating and clogging the middle of the impeller, thus effectively improving the pulverizer's exhaust efficiency.

Description

Technical Field

[0001] This invention relates to the field of pulverizer technology, and in particular to a pulverizer for a rice hulling and milling combined machine. Background Technology

[0002] The pulverizer in a rice hulling and milling machine is a very important part of the grain processing process. It can pulverize rice by-products (such as rice bran and rice husks) to achieve a certain fineness for further processing and utilization.

[0003] Chinese Patent Publication No. CN107670751A discloses an integrated crushing machine that uses the wind energy generated by a crushing fan to extract rice husks and bran. Dust-laden air enters the fan casing through the fan inlet and is then discharged through the fan casing outlet. Because part of the shaft and bearing housing is located inside the fan casing and on the air inlet path, dust easily adheres to the part between the fan impeller and the shaft. As the equipment runs for a long time, the dust adhering to this part easily clumps together and its volume increases, which can easily cause blockage inside the fan casing, reduce the air volume, and affect the grain processing efficiency. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a pulverizer for a rice hulling and milling combined machine to solve the above problems.

[0005] The technical solution of this invention is implemented as follows: a pulverizer for a rice hulling and milling combined machine, comprising: a machine body and a cyclone separator, the machine body comprising:

[0006] Crusher casing;

[0007] The exhaust fan housing is located on the outside of the crusher housing;

[0008] Bearing housing 1 is installed on the side of the exhaust fan housing away from the crusher housing;

[0009] The fan shaft is installed in a bearing housing, and one end of it extends through the bearing housing and into the fan casing to be fitted with an impeller shaft housing.

[0010] An exhaust port is located on the side of the exhaust fan housing away from the bearing seat, and an exhaust pipe is connected between the exhaust port and the cyclone separator.

[0011] There are gaps between the end of the fan shaft and the air extraction hole, and between the end of the impeller shaft seat and the air extraction hole.

[0012] Furthermore, an impeller assembly is mounted on the impeller shaft housing, and the impeller assembly includes:

[0013] Impeller side plate one is installed on the end of the impeller shaft seat away from the air extraction hole;

[0014] Impeller side plate 2 is located on the side of impeller side plate 1 away from bearing housing 1, and a blade receiving area is formed between impeller side plate 1 and impeller side plate 2.

[0015] The blades are provided in several circumferentially distributed within the blade receiving area, and the left and right sides of the blades are respectively connected and fixed to the impeller side plate one and the impeller side plate two.

[0016] A round hole is formed in the middle of the second part of the impeller side plate;

[0017] The circular hole and the air extraction hole are coaxial, and the diameter of the circular hole is larger than the diameter of the air extraction hole.

[0018] Furthermore, the shredder housing includes:

[0019] Bearing housing two, installed on one side of the outside of the crusher housing;

[0020] The crusher shaft is housed within bearing housing two. One end of the crusher shaft extends into the crusher housing and is connected to a crushing rotor for crushing materials.

[0021] The other end extends outward from the outer side of the bearing housing and is connected to a pulley.

[0022] A connecting plate is installed between the radial outer side of the bearing housing 2 and the exhaust fan housing to support the exhaust fan housing. One end of the fan shaft extends out of the bearing housing 1 and is connected to the pulley 2. The pulley 1 and the pulley 2 are connected by belt drive.

[0023] Furthermore, a feed inlet is provided at the end of the crusher housing away from the exhaust fan housing, and a discharge outlet is provided on one side of the upper end of the crusher housing. A discharge pipe is connected between the discharge outlet and the cyclone separator. An air inlet is provided on the side of the crusher housing away from the discharge outlet, and an air inlet pipe is connected between the air inlet and the air outlet of the exhaust fan housing.

[0024] Furthermore, a sealing housing is installed inside the connecting plate, and a dust removal mechanism is provided inside the sealing housing. One end of the dust removal mechanism penetrates through the exhaust fan housing and extends into the exhaust fan housing to scrape off impurities covering the blades. The dust removal mechanism includes:

[0025] A fixing plate is fixedly installed inside one side of the sealed housing.

[0026] A sliding plate, which is slidably mounted on the upper end of a fixed plate;

[0027] One side of the sliding plate is provided with a scraping component for extending into the exhaust fan housing, and the other side of the exhaust fan housing is provided with a connection hole for the scraping component to extend into.

[0028] Furthermore, the scraping component includes:

[0029] Upper scraper;

[0030] The lower scraper and the upper scraper are arranged in a mirror image of each other and are spaced apart from each other;

[0031] The upper scraper includes:

[0032] The push plate is set horizontally, and the front end of the push plate is bent downward to form a slope;

[0033] The drive rollers are rotatably mounted on both sides of the lower end of the push plate, and the length direction of the drive rollers is perpendicular to the length direction of the push plate.

[0034] A drive belt is fitted over the outside of two drive rollers;

[0035] The brush is arranged circumferentially around the outer periphery of the transmission belt;

[0036] Among them, the upper scraper and the lower scraper are equipped with vertical plates that are connected and fixed to the end of the fixed plate at the end away from the exhaust fan casing.

[0037] Furthermore, the sliding plate also includes:

[0038] Drive gear one;

[0039] Drive gear 1 and drive gear 2 are respectively rotatably mounted on both sides of the upper end of the sliding plate, and drive gear 1 and drive gear 2 mesh with each other.

[0040] A drive wheel and a drive gear are provided with a receiving hole through the middle of the drive wheel and a drive wheel that is rotatably connected to the sliding plate inside the receiving hole.

[0041] The second drive wheel and the second drive gear have a through hole in the middle, and the second drive wheel, which is rotatably connected to the sliding plate, is installed inside the second through hole.

[0042] The upper end of the fixed plate is provided with a sliding groove, and a drive motor is fixedly installed on one side of the lower end of the sliding plate. The output shaft of the drive motor passes through the sliding plate and is connected and fixed to the drive wheel to drive the drive wheel to rotate.

[0043] A third drive wheel is rotatably connected to the other side of the lower end of the sliding plate, and a rotating bearing is keyed between the third drive wheel and the second drive wheel.

[0044] The drive wheel three has a transmission tooth on its half circumference, and the two sides of the slide groove have racks that mesh with the transmission tooth. When the transmission tooth meshes with the rack on one side of the slide groove, the rack on the other side separates from the transmission tooth.

[0045] Among them, a pawl is provided on the outer circumference of the drive wheel one, and a ratchet is provided on the circumference of the hole wall of the receiving hole one. A pawl is provided on the outer circumference of the drive wheel two, and a ratchet is provided on the circumference of the hole wall of the receiving hole two. When the drive wheel one rotates counterclockwise, the drive gear one rotates synchronously and drives the drive gear two to rotate clockwise, so that the drive wheel two rotates synchronously clockwise, thereby driving the drive wheel three to rotate, so as to drive the sliding plate to extend / retract the fixed plate horizontally.

[0046] Furthermore, drive wheel one also includes:

[0047] A fixed ring is fixedly installed on the upper end of the drive wheel, and the upper end of the fixed ring is circumferentially provided with transmission teeth.

[0048] Rotating ring one;

[0049] Rotating ring 2, rotating ring 1 and rotating ring 2 are arranged alternately from bottom to top above the fixed ring. The upper and lower ends of rotating ring 1 are respectively circumferentially provided with transmission teeth 3 and transmission teeth 4, and the lower end of rotating ring 2 is circumferentially provided with transmission teeth 5.

[0050] The third drive gear is located between the fixed ring and the first rotating ring. The upper and lower sides of the third drive gear mesh with the third and second transmission gears, respectively.

[0051] The fourth drive gear is located between the first rotating ring and the second rotating ring. The upper and lower sides of the fourth drive gear mesh with the fourth and third transmission gears, respectively.

[0052] Among them, drive shaft one is installed in the middle of drive gear three, and drive shaft two is installed in the middle of drive gear four. The ends of drive shaft one and drive shaft two pass through the vertical plate and are connected and fixed to the drive rollers of the lower scraper and the upper scraper respectively, so as to drive the drive rollers to drive the drive belt to move.

[0053] The beneficial effects of this invention are as follows:

[0054] The spacing between the fan shaft and the impeller shaft seat and the air extraction hole makes the air extraction smoother. Compared with traditional technology, when the crusher is running, the dust-laden air passing through the air extraction pipe will not be obstructed by the shaft when passing through the air extraction hole, making it less likely for impurities to accumulate in the middle of the impeller and cause blockage, thus effectively improving the air extraction efficiency of the crusher. Attached Figure Description

[0055] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0056] Figure 1 This is a schematic diagram of the overall structure of the pulverizer according to a specific embodiment of the present invention. Figure 1 ;

[0057] Figure 2 This is a partial cross-sectional view of the pulverizer according to a specific embodiment of the present invention;

[0058] Figure 3 This is a schematic diagram of the overall structure of the pulverizer according to a specific embodiment of the present invention. Figure 2 ;

[0059] Figure 4 This is a schematic diagram of the scraping component structure according to a specific embodiment of the present invention. Figure 1 ;

[0060] Figure 5 This is a schematic diagram of the scraping component structure according to a specific embodiment of the present invention. Figure 2 . Detailed Implementation

[0061] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0062] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0063] Example 1:

[0064] like Figures 1 to 5 As shown, this invention discloses a pulverizer for a rice hulling and milling combined machine, comprising: a machine body 1 and a cyclone separator 2. The machine body 1 includes:

[0065] Crusher housing 3;

[0066] The exhaust fan housing 4 is located on the outside of the crusher housing 3;

[0067] Bearing housing 401 is installed on the side of the exhaust fan housing 4 away from the crusher housing 3;

[0068] The fan shaft 402 is installed in the bearing housing 401, and one end of it extends through the bearing housing 401 and into the fan casing 4 to be fitted with the impeller shaft housing 5.

[0069] An exhaust port 404 is located on the side of the exhaust fan housing 4 away from the bearing seat 401, and an exhaust pipe 405 is connected between the exhaust port 404 and the cyclone 2.

[0070] Among them, a gap is provided between the end of the fan shaft 402 and the air extraction hole 404, and between the end of the impeller shaft seat 5 and the air extraction hole 404.

[0071] In the above technical solution, the bearing housing is integrally connected and fixed to the exhaust fan housing;

[0072] By adopting the above technical solution, the spacing between the fan shaft and the impeller shaft seat and the air extraction hole is set so that the air extraction hole can draw air more smoothly. Compared with traditional technology, when the crusher is running, the dust-laden air passing through the air extraction pipe will not be obstructed by the shaft when passing through the air extraction hole, so that the middle of the impeller is less likely to accumulate impurities and cause blockage, effectively improving the air extraction efficiency of the crusher.

[0073] Example 2:

[0074] This embodiment provides a pulverizer for a rice hulling and milling combined machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0075] Furthermore, an impeller assembly is mounted on the impeller shaft housing 5, the impeller assembly including:

[0076] Impeller side plate 501 is installed on one end of the impeller shaft seat 5 away from the exhaust port 404;

[0077] Impeller side plate 2 502 is located on the side of impeller side plate 1 501 away from bearing housing 1 401, and a blade receiving area is formed between impeller side plate 1 501 and impeller side plate 2 502.

[0078] Several blades 503 are provided and are distributed circumferentially in the blade receiving area. The left and right sides of the blades 503 are respectively connected and fixed to the impeller side plate 501 and the impeller side plate 502.

[0079] A circular hole 504 is formed in the middle of the impeller side plate 2 502;

[0080] Among them, the circular hole 504 is coaxial with the air extraction hole, and the diameter of the circular hole 504 is larger than the diameter of the air extraction hole 404.

[0081] In the above technical solution, the two ends of the blade are respectively connected and fixed at right angles to impeller side plate one and impeller side plate two;

[0082] By adopting the above technical solution, the circular hole with an outer diameter larger than the air extraction hole is designed to make the airflow smoother.

[0083] Example 3:

[0084] This embodiment provides a pulverizer for a rice hulling and milling combined machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0085] Furthermore, the shredder housing 3 includes:

[0086] Bearing housing 2 301 is installed on one side of the outer side of the crusher housing 3;

[0087] The crusher shaft 302 is housed within the bearing housing 301. One end of the crusher shaft 302 extends into the crusher housing 3 and is connected to a crushing rotor for crushing materials.

[0088] The other end extends out of the bearing housing 301 and is connected to the pulley 303.

[0089] Among them, a connecting plate is installed between the radial outer side of the bearing housing 301 and the exhaust fan housing 4 to support the exhaust fan housing 3. One end of the fan shaft 402 extends out of the bearing housing 401 and is connected to the pulley 4051. The pulley 303 and the pulley 4051 are connected by belt drive.

[0090] In the above technical solution, the crushing rotor is a crushing rotor with several blades, which can better crush materials;

[0091] In the above technical solution, a screen cylinder is also provided outside the crushing rotor;

[0092] In the above technical solution, pulley one is a multi-groove pulley, which is connected to an external servo motor via belt drive, and then provides power to the fan shaft through pulley one;

[0093] In the above technical solution, the connecting plate and the exhaust fan housing are integrally formed, and the connecting plate is fixed to the bearing seat two by bolts to facilitate the disassembly and assembly of the exhaust fan housing.

[0094] By adopting the above technical solution, the transmission structure is simple and easy to install.

[0095] Example 4:

[0096] This embodiment provides a pulverizer for a rice hulling and milling combined machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0097] Furthermore, the crusher housing 3 has a feed inlet at the end away from the exhaust fan housing, a discharge outlet at the upper side of the crusher housing 3, a discharge pipe connected to the discharge outlet and the cyclone separator, and an air inlet at the side of the crusher housing 3 away from the discharge outlet, with an air inlet pipe 505 connected between the air inlet and the air outlet of the exhaust fan housing 3.

[0098] By adopting the above technical solution, the feed inlet is used to receive by-products such as rice bran and rice husks generated during the production of the rice hulling and milling combined rice mill. These by-products enter the screen cylinder and are then crushed by the crushing rotor. The crushed material is drawn into the cyclone separator through the discharge pipe for collection. The air inlet pipe 505 is designed to facilitate auxiliary air intake for the crusher casing, ensuring that the discharge pipe can draw material normally.

[0099] Example 5:

[0100] This embodiment provides a pulverizer for a rice hulling and milling combined machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0101] Furthermore, a dust removal mechanism 6 is installed inside the connecting plate. One end of the dust removal mechanism penetrates the exhaust fan housing 4 and extends into the exhaust fan housing 4 to scrape off impurities covering the blades. The dust removal mechanism includes:

[0102] The fixing plate 601 is fixedly installed inside one side of the sealed housing;

[0103] The sliding plate 602 is slidably mounted on the upper end of the fixed plate 601;

[0104] The sliding plate 602 has a scraping component on one side for extending into the exhaust fan housing 4, and a connection hole for the scraping component to extend into is provided on the outer side of the exhaust fan housing 4.

[0105] In the above technical solution, a sealing shell is provided on the outside of the impurity removal mechanism. One end of the sealing shell is installed on the connecting plate, and the other end is installed on the outside of the exhaust fan housing and is covered on the outside of the connecting hole, so that the air outside the sealing shell will not enter the exhaust fan housing through the connecting hole.

[0106] By adopting the above technical solution, the impurity removal mechanism can extend into the exhaust fan casing after the crusher has finished processing the grain. In conjunction with the servo motor, it can clean the blades one by one, thereby improving the exhaust efficiency, extending the equipment life, and ensuring smooth operation.

[0107] Example 6:

[0108] This embodiment provides a pulverizer for a rice hulling and milling combined machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0109] Furthermore, the scraping component includes:

[0110] Upper scraper;

[0111] The lower scraper and the upper scraper are arranged in a mirror image of each other and are spaced apart from each other;

[0112] The upper scraper includes:

[0113] The push plate 700 is set horizontally, and the front end of the push plate 700 is bent downward to form a slope;

[0114] The drive rollers are rotatably mounted on both sides of the lower end of the push plate 700, and the length direction of the drive rollers is perpendicular to the length direction of the push plate 700.

[0115] A drive belt is fitted over the outside of two drive rollers;

[0116] The brush is arranged circumferentially around the outer periphery of the transmission belt;

[0117] Among them, the upper scraper and the lower scraper are equipped with a vertical plate that is connected and fixed to the end of the fixing plate 601 at the end away from the exhaust fan housing 4.

[0118] In the above technical solution, since the upper scraper and the lower scraper are mirror-distributed and have the same structure, only the structure of the upper scraper will be discussed above.

[0119] By adopting the above technical solution, the servo motor rotates to align the blades with the scraping component. After the scraping component extends into the exhaust fan housing, the blades enter between the upper and lower scrapers. The inclined surface creates a V-shape between the upper and lower scrapers, facilitating blade entry and reducing rotational errors. The transmission roller drives the transmission belt, causing the brush to move on both sides of the blades to clean the blade surface. No manual disassembly and cleaning is required, resulting in good performance.

[0120] Example 7:

[0121] This embodiment provides a pulverizer for a rice hulling and milling combined machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0122] Furthermore, the sliding plate 602 also includes:

[0123] Drive gear 1800;

[0124] Drive gear 2 801, drive gear 1 800 and drive gear 2 801 are respectively rotatably mounted on both sides of the upper end of sliding plate 602, and drive gear 1 800 and drive gear 2 801 mesh;

[0125] A drive wheel 802 and a drive gear 800 have a through hole in the middle of the drive wheel 802, and a drive wheel 802 that is rotatably connected to the sliding plate 602 is installed in the through hole.

[0126] A second drive wheel 803 and a second drive gear 801 are provided with a second receiving hole through the middle of the second receiving hole, and a second drive wheel 803 that is rotatably connected to the sliding plate 602 is provided in the second receiving hole.

[0127] The upper end of the fixed plate 601 is provided with a sliding groove, and the lower end of the sliding plate 602 is fixedly installed with a drive motor 804. The output shaft of the drive motor 804 passes through the sliding plate 602 and is connected and fixed to the drive wheel 802 to drive the drive wheel 802 to rotate.

[0128] Among them, a third drive wheel 805 is rotatably connected to the other side of the lower end of the sliding plate 602, and a rotating bearing is keyed between the third drive wheel 805 and the second drive wheel 803.

[0129] The drive wheel 3 805 is provided with a transmission tooth on half of its circumference. The two sides of the slide groove are provided with racks that cooperate with the transmission tooth. When the transmission tooth meshes with the rack on one side of the slide groove, the rack on the other side separates from the transmission tooth.

[0130] Among them, the outer circumferential of the drive wheel 1 802 is provided with a pawl 1, and the circumferential of the hole wall of the receiving hole 1 is provided with a ratchet 1. The outer circumferential of the drive wheel 2 803 is provided with a pawl 2, and the circumferential of the hole wall of the receiving hole 2 is provided with a ratchet 2. When the drive wheel 1 rotates counterclockwise, the drive gear 1 800 rotates synchronously and drives the drive gear 2 801 to rotate clockwise, so that the drive wheel 2 803 rotates clockwise synchronously, thereby driving the drive wheel 3 805 to rotate, so as to drive the sliding plate to extend / retract the fixed plate 601 horizontally.

[0131] By adopting the above technical solution, when the motor drives the first drive wheel to rotate counterclockwise, it can drive the third drive wheel to rotate, so that the sliding plate can drive the scraping mechanism to reciprocate and extend into the exhaust fan housing, which is convenient for cleaning the blades one by one. When the motor starts, the transmission roller can rotate synchronously when the sliding plate moves, which drives the scraping mechanism to move horizontally to perform preliminary cleaning of the blades. When the scraping mechanism is fully inserted and cooperates with the blades, the motor drives the first drive wheel to rotate clockwise. At this time, the third drive wheel is fixed, the sliding plate is fixed, and the motor alone drives the transmission roller to provide power, so that the blades are further cleaned. The structure is compact, and the sliding plate and the transmission roller do not interfere with each other when providing power.

[0132] Example 8:

[0133] This embodiment provides a pulverizer for a rice hulling and milling combined machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0134] Furthermore, the drive wheel 1802 also includes:

[0135] A fixed ring 900 is fixedly installed on the upper end of the drive wheel 802, and a transmission tooth 2 is provided circumferentially on the upper end of the fixed ring 900;

[0136] Rotating ring 901;

[0137] Rotating ring 2 902, rotating ring 1 901 and rotating ring 2 902 are arranged sequentially from bottom to top above the fixed ring 900. The upper and lower ends of rotating ring 1 901 are respectively circumferentially provided with transmission teeth 3 and transmission teeth 4, and the lower end of rotating ring 2 902 is circumferentially provided with transmission teeth 5.

[0138] Drive gear 3 903 is located between fixed ring 900 and rotating ring 1 901. The upper and lower sides of drive gear 3 903 mesh with transmission gear 3 and transmission gear 2 respectively.

[0139] The drive gear 4 904 is located between the rotating ring 1 901 and the rotating ring 2 902. The upper and lower sides of the drive gear 4 904 mesh with the transmission gear 4 and the transmission gear 3, respectively.

[0140] Among them, drive shaft 1 is installed in the middle of drive gear 3 903, and drive shaft 2 is installed in the middle of drive gear 4 904. The ends of drive shaft 1 and drive shaft 2 pass through the vertical plate and are connected and fixed to the drive rollers of the lower scraper and the upper scraper respectively, so as to drive the drive rollers to drive the drive belt to move.

[0141] In the above technical solution, rotating ring one and rotating ring two are connected to the vertical plate through a support plate, and rotating ring one and rotating ring two can rotate on the support plate;

[0142] By adopting the above technical solution, when the drive wheel rotates, the fixed ring rotates synchronously, which drives the drive gear three to rotate through the transmission gear two, and then drives the rotating ring two to rotate through the rotation of the drive gear four, which then outputs power through the transmission rollers of the transmission puller one and the transmission shaft two. The setting of the rotating ring two can play a certain auxiliary fixing role, making the overall power transmission structure more stable.

[0143] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pulverizer for a rice hulling and milling combined machine, comprising: The body (1) and the cyclone (2) are characterized in that the body (1) includes: a crusher shell (3); The exhaust fan housing (4) is located on the outside of the crusher housing (3); Bearing housing 1 (401) is installed on the side of the exhaust fan housing (4) away from the crusher housing (3); The fan shaft (402) is installed in the bearing housing (401), and one end of it extends through the bearing housing (401) and into the fan casing (4) where the impeller shaft housing (5) is sleeved. An exhaust port (404) is provided on the side of the exhaust fan housing (4) away from the bearing seat (401), and an exhaust pipe (405) is connected between the exhaust port (404) and the cyclone (2). Among them, a gap is provided between the end of the fan shaft (402) and the air extraction hole (404), and between the end of the impeller shaft seat (5) and the air extraction hole (404); An impeller assembly is installed on the impeller shaft seat (5). The impeller assembly includes: an impeller side plate (501) installed on the end of the impeller shaft seat (5) away from the exhaust port (404); Impeller side plate 2 (502) is located on the side of impeller side plate 1 (501) away from bearing housing 1 (401), and a blade receiving area is formed between impeller side plate 1 (501) and impeller side plate 2 (502); The blades (503) are provided in several units and are distributed circumferentially in the blade receiving area. The left and right sides of the blades (503) are respectively connected and fixed to the impeller side plate one (501) and the impeller side plate two (502). A circular hole (504) is formed in the middle of the impeller side plate two (502); Among them, the circular hole (504) is coaxial with the air extraction hole, and the diameter of the circular hole (504) is larger than the diameter of the air extraction hole (404); The crusher housing (3) includes: bearing seat two (301), which is installed on the outer side of the crusher housing (3); The crusher shaft (302) is located inside the bearing housing (301). One end of the crusher shaft (302) extends into the crusher housing (3) and is connected to a crushing rotor for crushing materials. The other end extends out of the bearing housing (301) and is connected to a pulley (303). Among them, a connecting plate is installed between the radial outer side of the bearing housing (301) and the exhaust fan housing (4) to support the exhaust fan housing (4). One end of the fan shaft (402) extends out of the bearing housing (401) and is connected to the pulley (4051). The pulley (303) and the pulley (4051) are connected by belt drive. A sealing shell is installed inside the connecting plate. A dust removal mechanism (6) is provided inside the sealing shell. One end of the dust removal mechanism penetrates the exhaust fan housing (4) and extends into the exhaust fan housing (4) to scrape off the impurities covering the blades. The dust removal mechanism includes: a fixing plate (601), which is fixedly installed on one side inside the sealing shell. A sliding plate (602) is slidably mounted on the upper end of a fixed plate (601); The sliding plate (602) has a scraping component on one side for extending into the exhaust fan housing (4), and a connection hole for the scraping component to extend into is provided on the outer side of the exhaust fan housing (4).

2. The pulverizer of the rice hulling and milling combined machine according to claim 1, characterized in that, The crusher housing (3) has a feed inlet at one end away from the exhaust fan housing (4), and a discharge outlet is provided on one side of the upper end of the crusher housing (3). A discharge pipe is connected between the discharge outlet and the cyclone separator. An air inlet is provided on the side of the crusher housing (3) away from the discharge outlet. An air inlet pipe (505) is connected between the air inlet and the air outlet of the exhaust fan housing (4).

3. The pulverizer of the rice hulling and milling combined machine according to claim 1, characterized in that, The scraping assembly includes: an upper scraper; The lower scraper and the upper scraper are arranged in a mirror image of each other and are spaced apart from each other; The upper scraper includes: The push plate (700) is arranged horizontally, and the front end of the push plate (700) is bent downward to form an inclined surface; The drive rollers are rotatably mounted on both sides of the lower end of the push plate (700), and the length direction of the drive rollers is perpendicular to the length direction of the push plate (700). A drive belt is fitted over the outside of two drive rollers; The brush is arranged circumferentially around the outer periphery of the transmission belt; Among them, the upper scraper and the lower scraper are equipped with a vertical plate that is connected and fixed to the end of the fixed plate (601) at the end away from the exhaust fan housing (4).

4. The pulverizer of the rice hulling and milling combined machine according to claim 3, characterized in that, The sliding plate (602) also includes: a drive gear (800); Drive gear 2 (801), drive gear 1 (800) and drive gear 2 (801) are respectively rotatably mounted on both sides of the upper end of the sliding plate (602), and drive gear 1 (800) and drive gear 2 (801) mesh; A drive wheel (802) and a drive gear (800) are provided with a receiving hole through the middle of the drive wheel (802), and a drive wheel (802) that is rotatably connected to the sliding plate (602) is provided in the receiving hole. The second drive wheel (803) and the second drive gear (801) have a through-hole (801) in the middle, and the second drive wheel (803) is rotatably connected to the sliding plate (602) inside the second drive wheel (803). Among them, the upper end of the fixed plate (601) is provided with a sliding groove, and the lower end of the sliding plate (602) is fixedly installed with a drive motor (804). The output shaft of the drive motor (804) passes through the sliding plate (602) and is connected and fixed to the drive wheel (802) to drive the drive wheel (802) to rotate. Among them, a third drive wheel (805) is rotatably connected to the other side of the lower end of the sliding plate (602), and a rotating bearing is keyed between the third drive wheel (805) and the second drive wheel (803). The drive wheel three (805) is provided with a transmission tooth one on half of its circumference. The two sides of the groove wall are provided with racks that cooperate with the transmission tooth one. When the transmission tooth one meshes with the rack on one side of the groove, the rack on the other side separates from the transmission tooth one. Among them, the outer circumferential of the drive wheel 1 (802) is provided with a pawl 1, the circumferential of the hole wall of the receiving hole 1 is provided with a ratchet 1, the outer circumferential of the drive wheel 2 (803) is provided with a pawl 2, the circumferential of the hole wall of the receiving hole 2 is provided with a ratchet 2. When the drive wheel 1 rotates counterclockwise, the drive gear 1 (800) rotates synchronously and drives the drive gear 2 (801) to rotate clockwise, so that the drive wheel 2 (803) rotates clockwise synchronously, thereby driving the drive wheel 3 (805) to rotate, so as to drive the sliding plate to extend / retract the fixed plate (601) horizontally.

5. The pulverizer of the rice hulling and milling combined machine according to claim 4, characterized in that, The drive wheel (802) also includes a retaining ring (900), which is fixedly installed on the upper end of the drive wheel (802), and the upper end of the retaining ring (900) is provided with a transmission tooth 2 in the circumferential direction; Rotating ring 1 (901); Rotating ring 2 (902), rotating ring 1 (901) and rotating ring 2 (902) are arranged sequentially from bottom to top above the fixed ring (900). The upper and lower ends of rotating ring 1 (901) are respectively circumferentially provided with transmission teeth 3 and transmission teeth 4, and the lower end of rotating ring 2 (902) is circumferentially provided with transmission teeth 5. The drive gear three (903) is located between the fixed ring (900) and the rotating ring one (901). The upper and lower sides of the drive gear three (903) mesh with the transmission gear four and the transmission gear two, respectively. The drive gear four (904) is located between the rotating ring one (901) and the rotating ring two (902). The upper and lower sides of the drive gear four (904) mesh with the transmission gear five and the transmission gear three, respectively. Among them, drive shaft one is installed in the middle of drive gear three (903), and drive shaft two is installed in the middle of drive gear four (904). The ends of drive shaft one and drive shaft two pass through the vertical plate and are connected and fixed to the drive rollers of the lower scraper and the upper scraper respectively, so as to drive the drive rollers to drive the drive belt to move.

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