Grain processing detection screening machine with dust removal effect

Abstract

The application discloses a grain processing detection screening machine with dust removal effect, relates to the technical field of grain processing, and aims to solve the technical problem of poor unblocking effect of the existing grain processing detection screening machine with dust removal effect, comprising a drum screening assembly, a sieve drum, the sieve drum being driven by a driving motor A, and a sealing blowing piece, when the application is used for screening high-viscosity agricultural products, the sealing blowing piece can be driven to move along a wave-shaped track through a wave-shaped driving piece and a wave-shaped guide piece, the driving motor A can also drive the sealing blowing piece to realize intermittent translation and stop at a wave trough through speed regulation and transmission of a speed regulation transmission piece, cooperation of an intermittent transmission piece and a reciprocating lifting transmission piece, at this time, the screen rotates and blows the screen for one circle, moves towards a wave crest, moves away from the screen, reduces friction between the screen and the rotating screen during the movement, and keeps the screening work of the screen and the movement of the sealing blowing piece smooth.

Description

Technical Field

[0001] This invention relates to the field of grain processing technology, and more specifically, to a grain processing inspection and screening machine with dust removal effect. Background Technology

[0002] Grain processing testing and screening machines are specialized equipment for agricultural and sideline food processing. They are widely used in the cleaning, grading, and impurity removal of various grains such as rice, wheat, corn, and soybeans. When in use, they separate impurities in the raw grains, such as straw, sand, dust, moldy grains, and discolored grains, based on differences in particle size, specific gravity, or shape, and grade them according to size, thereby improving the purity and quality of grain products.

[0003] There are many types of grain processing and screening machines. Based on their working principle, they can be mainly divided into vibrating screens, planar rotary screens, gravity destoners, and drum screens. Among them, drum screens are particularly widely used in the initial cleaning and grading stages of grain processing due to their simple structure, stable operation, and large processing capacity. Their basic structure mainly includes a drive unit, such as a motor and reducer, a rotating cylindrical screen body, a frame, and feeding and discharging devices. The screen cylinder is usually composed of perforated screen plates or woven screen mesh, and can be designed as a combination of multiple sections with different aperture sizes to achieve multi-stage grading. During operation, the material is fed into the low-speed rotating screen cylinder from the feed end. Under the action of friction and gravity, it tumbles and slides with the screen cylinder. Particles smaller than the screen aperture size quickly pass through the screen and are separated, while materials larger than the screen aperture size move towards the discharge end along the screen cylinder's inclination angle or the spiral guide plate, ultimately completing the separation process. The screening process is characterized by minimal material damage, low noise, and ease of maintenance. However, the utilization rate of the screen surface is relatively low, and the screen holes are easily clogged when processing wet and sticky materials. Existing technologies generally clean the screen by installing elastic scrapers, vibrating rods, or rotating brushes on the inner wall of the screen cylinder. However, this method can only scrape off the material on the inner wall of the screen cylinder. In the process of scraping, high-viscosity materials are also easily spread evenly on the inner wall of the screen cylinder, and the high-viscosity materials still clog the screen holes and are difficult to clear. Existing technologies can also use air cannons to clear the blockage.

[0004] The shortcomings of existing technologies are that, in addition to air tanks and rupture valves, air compressors, air tanks, refrigerated dryers, precision filters, and pipes and valves connecting all these devices are required. The configuration cost is high, the operating energy consumption is high, and air cannons are usually installed at fixed points, which may result in blind spots or areas of reduced effectiveness in clearing blockages. Summary of the Invention

[0005] The purpose of this invention is to provide a grain processing inspection and screening machine with dust removal effect, so as to solve the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a drum screening assembly including a screen cylinder, wherein the screen cylinder can be driven by a drive motor A; A sealing jet component is installed above the screen cylinder; A wave-shaped drive unit includes a movable frame with a sealing spray component mounted on its bottom. A gear is rotatably mounted on the outer wall of the movable frame. The gear can be driven by a drive motor B. A wave-shaped rack is meshed with the bottom of the gear. The wave-shaped guide can be used with the wave-shaped drive to make the sealing jet move along the wave-shaped trajectory. The speed-regulating transmission component can be driven by drive motor A; Intermittent transmission components are installed at the power output end of speed-regulating transmission components; The reciprocating lifting transmission component is located at the power output end of the intermittent transmission component. It can work with the speed regulating transmission component and the intermittent transmission component to drive the wave-shaped rack to reciprocate and lift intermittently. This enables the sealing spray component to move intermittently along the wave-shaped trajectory and stop at the trough. The interval can allow the screen cylinder to rotate at least one revolution.

[0007] As a further description of the above technical solution: a rotating shaft is installed at the center of the screen cylinder, and material troughs are installed at both ends and the bottom of the screen cylinder. A frame is provided below the screen cylinder and is rotatably connected to the top of the frame.

[0008] As a further description of the above technical solution: the sealing spray component includes a sealing cover, and an air pipe is installed on the top of the sealing cover and is connected to an air supply component through the air pipe.

[0009] As a further description of the above technical solution: a rigid sealing ring is installed at the bottom of the sealing cover, a flexible sealing ring is installed on the outer wall of the rigid sealing ring, and a number of ball bearings are embedded and rotatably connected at the bottom of the rigid sealing ring.

[0010] As a further description of the above technical solution: a plurality of sliding components are provided above the screen cylinder. The sliding components include a slide block fixed to the top of the frame. A sliding member is slidably connected to the outer wall of the slide block. The sliding member is fixed to the outer wall of the corrugated rack.

[0011] As a further description of the above technical solution: the wave-shaped guide includes a wave-shaped guide rod fixed to the top of the frame, and a guide sleeve is slidably connected to the outer wall of the wave-shaped guide rod, and the guide sleeve is disposed on the outer wall of the moving frame.

[0012] As a further description of the above technical solution: a transmission assembly is also installed on the outer wall of the frame. The transmission assembly includes a speed regulating transmission component, which includes pulleys. There are several pulleys with different diameters, and a belt body is connected to the outer wall of the pulley.

[0013] As a further description of the above technical solution: the intermittent transmission component includes an active disc that can be driven by a drive motor A, and the power output end of the active disc is connected to a driven grooved wheel.

[0014] As a further description of the above technical solution: the reciprocating lifting transmission component includes a lead screw, and the power input end of the lead screw is connected to a driven grooved wheel through a speed regulating transmission component.

[0015] As a further description of the above technical solution: the outer wall of the lead screw is provided with a clockwise spiral groove and a counterclockwise spiral groove, and the clockwise spiral groove and the counterclockwise spiral groove are connected end to end. A sliding pin is slidably connected in the groove of the lead screw. A sliding sleeve is fixed on the outer wall of the sliding pin. A sliding rod is provided on the inner wall of the sliding sleeve and can slide along the outer wall of the sliding rod.

[0016] In the above technical solution, the present invention provides the following beneficial effects: When screening high-viscosity agricultural products, this invention uses wave-shaped drive components and wave-shaped guide components to drive the sealing spray component to move along a wave-shaped trajectory. The drive motor A can also be speed-regulated and driven by the speed-regulating transmission component, in conjunction with the intermittent transmission component and the reciprocating lifting transmission component, to drive the sealing spray component to achieve intermittent translation and stop at the trough of the wave. At this time, the screen rotates and the screen is cleaned once. When moving, it moves towards the crest of the wave and moves in the direction away from the screen, reducing the friction between the screen and the rotating screen during the movement, ensuring smooth screening and movement of the sealing spray component, and solving the problem of poor unclogging effect of existing grain processing and testing screening machines with dust removal effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a front view structural diagram provided for an embodiment of the present invention; Figure 2 This is a side view structural diagram provided in an embodiment of the present invention; Figure 3 A front structural schematic diagram of the wave-shaped moving assembly provided in an embodiment of the present invention; Figure 4 A side view of the wave-shaped moving assembly provided in an embodiment of the present invention; Figure 5 for Figure 4 Schematic diagram of the structure at point A; Figure 6This is a top view structural diagram provided for an embodiment of the present invention; Figure 7 for Figure 6 Schematic diagram of the structure at point B; Figure 8 This is a schematic diagram of the structure of the intermittent transmission component provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the reciprocating lifting transmission component provided in an embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of the sliding component provided in an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Drum screening assembly; 2. Sealing and blowing components; 3. Wave-shaped moving assembly; 4. Drive motor A; 5. Transmission assembly; 101. Screen cylinder; 102. Rotating shaft; 103. Material trough; 104. Frame; 201. Sealing cover; 202. Air tube; 203. Rigid sealing ring; 204. Flexible sealing ring; 301. Wave-shaped drive component; 302. Wave-shaped guide component; 303. Sliding assembly; 3011. Moving frame; 3012. Drive motor B; 3013. Gear; 3014. Wavy rack; 3021, Guide sleeve; 3022, Wave-shaped guide rod; 3031, slide block; 3032, sliding component; 501. Speed-regulating transmission components; 502. Intermittent transmission components; 503. Reciprocating lifting transmission components; 5011, Pulley; 5012, Belt body; 5021, Driving disc; 5022, Driven grooved wheel; 5031, lead screw; 5032, clockwise spiral groove; 5033, counterclockwise spiral groove; 5034, slide bar; 5035, sliding sleeve; 5036, sliding pin. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] Please see Figures 1-10 The present invention provides a technical solution including a drum screening assembly 1, including a screen cylinder 101, which can be driven by a drive motor A4; In another embodiment of the present invention, preferably, a rotating shaft 102 is installed at the center of the screen cylinder 101, and material troughs 103 are installed at both ends and the bottom of the screen cylinder 101. A frame 104 is provided below the screen cylinder 101 and is rotatably connected to the top of the frame 104. The material troughs 103 at both ends of the screen cylinder 101 are used to guide the feeding and discharging of materials, and the material trough 103 at the bottom of the screen cylinder 101 is used to collect the undersize material. In actual use, the screen cylinder 101 can also be equipped with an elastic scraper, vibrating rod or rotating brush to help clear blockages.

[0022] The sealing jet component 2 is positioned above the screen cylinder 101; In another embodiment of the present invention, the sealing blower 2 includes a sealing cover 201, and an air pipe 202 is installed on the top of the sealing cover 201 and is connected to an external air supply component through the air pipe 202. The external air supply component can be an existing air blower or air pump.

[0023] In another embodiment of the present invention, a rigid sealing ring 203 is installed at the bottom of the sealing cover 201, and a flexible sealing ring 204 is installed on the outer wall of the rigid sealing ring 203. Several balls are embedded and rotatably connected at the bottom of the rigid sealing ring 203. The flexible sealing ring 204 can be made of rubber or silicone to ensure dynamic sealing with the surface of the rotating screen cylinder 101 and reduce pressure leakage. The balls embedded at the bottom of the rigid sealing ring 203 can reduce the frictional resistance with the surface of the screen cylinder 101. The combination of the rigid sealing ring 203 and the flexible sealing ring 204 increases the sealing performance and avoids the problem of easy wear and frequent replacement of the flexible sealing ring 204 when using it alone.

[0024] The wave-shaped moving assembly 3 includes a wave-shaped drive component 301, a wave-shaped guide component 302, and a sliding component 303; The wave-shaped drive component 301 includes a movable frame 3011 with a sealing spray component 2 mounted on its bottom. A gear 3013 is rotatably mounted on the outer wall of the movable frame 3011. The gear 3013 can be driven by a drive motor B3012. A wave-shaped rack 3014 is meshed with the bottom of the gear 3013. When the drive motor B3012 drives the gear 3013 to rotate, the wave-shaped rack 3014 can rotate along its top due to the meshing of the gear 3013 and the wave-shaped rack 3014. Guided by the wave-shaped guide component 302, the movable frame 3011 and the sealing spray component 2 can move along a wave-shaped trajectory. In another embodiment of the present invention, a plurality of sliding components 303 are provided above the screen cylinder 101. The sliding components 303 include a slide block 3031 fixed to the top of the frame 104. A sliding member 3032 is slidably connected to the outer wall of the slide block 3031. The sliding member 3032 is fixed to the outer wall of the wave-shaped rack 3014 and plays a guiding role to ensure that the wave-shaped rack 3014 rises and falls smoothly.

[0025] The wave-shaped guide 302 can be used in conjunction with the wave-shaped drive 301 to make the sealing spray component 2 move along the wave-shaped trajectory. In another embodiment of the present invention, the wave-shaped guide 302 includes a wave-shaped guide rod 3022 fixed to the top of the frame 104. A guide sleeve 3021 is slidably connected to the outer wall of the wave-shaped guide rod 3022. The guide sleeve 3021 is disposed on the outer wall of the moving frame 3011 to ensure that the sealing spray component 2 moves smoothly along the wave-shaped trajectory.

[0026] The speed regulating transmission component 501 can be driven by the drive motor A4. The drive motor A4 can drive the screen cylinder 101 to rotate for screening. It can also drive the sealing spray component 2 to achieve intermittent translation and stop at the trough through the speed regulation and transmission of the speed regulating transmission component 501, in conjunction with the intermittent transmission component 502 and the reciprocating lifting transmission component 503, resulting in good energy saving effect. In another embodiment of the present invention, a transmission assembly 5 is also installed on the outer side wall of the frame 104. The transmission assembly 5 includes a speed regulating transmission component 501, which includes a pulley 5011. There are several pulleys 5011 with different diameters, and a belt body 5012 is connected to the outer side wall of the pulley 5011.

[0027] Intermittent transmission component 502 is installed at the power output end of speed regulating transmission component 501; In another embodiment of the present invention, the intermittent transmission component 502 includes an active disk 5021 that can be driven by a drive motor A4. The power output end of the active disk 5021 is connected to a driven grooved wheel 5022. When the active disk 5021 rotates, the cylindrical pin on the active disk 5021 begins to enter the radial groove of the driven grooved wheel 5022. At this time, the locking arc on the active disk 5021 also just disengages from the driven grooved wheel 5022, releasing the lock on the grooved wheel. The cylindrical pin drives the driven grooved wheel 5022 to start rotating. Then, the cylindrical pin on the active disk 5021 exits the radial groove of the driven grooved wheel 5022, and the locking arc on the active disk 5021 slides back into the groove of the driven grooved wheel 5022, locking the driven grooved wheel 5022. During the period when the active disk 5021 continues to rotate until the cylindrical pin enters the next radial groove again, the driven grooved wheel 5022 stops.

[0028] The reciprocating lifting transmission component 503 is located at the power output end of the intermittent transmission component 502. It can work with the speed regulating transmission component 501 and the intermittent transmission component 502 to drive the wave-shaped rack 3014 to reciprocate intermittently. This enables the sealing spray component 2 to move intermittently along the wave-shaped trajectory and stop at the trough. The intermittent duration allows the screen cylinder 101 to rotate at least one revolution. In actual use, the transmission ratio of the speed regulating transmission component 501 needs to be customized according to the actual usage requirements. When the screen cylinder 101 rotates at least one revolution, the driven groove wheel 5022 rotates by 1 / n angle. For example, the quarter groove wheel is one-quarter and the six-quarter groove wheel is one-sixth. By adjusting the speed of the speed regulating transmission component 501, the screw 5031 rotates and drives the sliding pin 5036 to slide from one end of the clockwise spiral groove 5032 and the counterclockwise spiral groove 5033 to the other end. That is, the wave-shaped rack 3014 moves from the top to the bottom or the bottom to the top of the lifting trajectory. It should be noted that in actual use, the transmission ratio of the speed regulating transmission component 501 and the output speed of the drive motor B3012 need to be adjusted so that when the gear 3013 is at the trough of the wave rack 3014, the wave rack 3014 will rise or fall. When the wave-shaped rack 3014 moves to the bottom of the lifting track, the gear 3013 disengages from the wave-shaped rack 3014, and the driven groove wheel 5022 enters a resting state. The sealing spray component 2 stays at the trough. The resting time of the driven groove wheel 5022 allows the screen cylinder 101 to rotate at least one revolution, that is, the sealing spray component 2 sprays and cleans one revolution of the screen cylinder 101 directly below it. Then the driven groove wheel 5022 enters the rotation period, driving the wave-shaped rack 3014 to move to the top of the lifting track and engage with the gear 3013. The gear 3013 rotates, causing the sealing spray component 2 to move from this trough to the next trough, and so on.

[0029] In another embodiment of the present invention, the reciprocating lifting transmission component 503 includes a lead screw 5031, and the power input end of the lead screw 5031 is connected to a driven grooved wheel 5022 through the speed regulating transmission component 501.

[0030] In another embodiment of the present invention, the outer wall of the lead screw 5031 is provided with a clockwise spiral groove 5032 and a counterclockwise spiral groove 5033, and the clockwise spiral groove 5032 and the counterclockwise spiral groove 5033 are connected end to end. A sliding pin 5036 is slidably connected in the groove of the lead screw 5031. A sliding sleeve 5035 is fixed on the outer wall of the sliding pin 5036. A sliding rod 5034 is provided on the inner wall of the sliding sleeve 5035 and can slide along the outer wall of the sliding rod 5034, which can drive the wave-shaped rack 3014 to perform intermittent reciprocating lifting and lowering motion.

[0031] Working principle: This embodiment provides a grain processing inspection and screening machine with dust removal effect. When in use, it is powered by an external power source. The existing external air supply device, such as an air blower or air pump, is turned on by an external switch to drive motor A4, drive motor B3012 and connecting air pipe 202. Drive motor A4 drives screen cylinder 101 to rotate continuously for material screening. In actual use, the screen cylinder 101 can also be equipped with an elastic scraper, vibrating rod or rotating brush to help clear blockages.

[0032] Gear 3013 can be driven by drive motor B3012. A wave-shaped rack 3014 is meshed with the bottom of gear 3013. When drive motor B3012 drives gear 3013 to rotate, the wave-shaped rack 3014 can rotate along its top due to meshing with it. Guided by wave-shaped guide 302, this rotation can move the movable frame 3011 and the sealing spray component 2 along a wave-shaped trajectory.

[0033] Meanwhile, the drive motor A4 can also drive the active disc 5021 of the intermittent transmission component 502 to rotate through the speed regulating transmission component 501. In actual use, the transmission ratio of the speed regulating transmission component 501 needs to be customized according to the actual use requirements so that when the screen cylinder 101 rotates at least one revolution, the driven groove wheel 5022 rotates by 1 / n angle. For example, the quarter groove wheel is one-quarter and the six-quarter groove wheel is one-sixth. By adjusting the speed of the speed regulating transmission component 501, when the screen cylinder 101 rotates at least one revolution, the driven groove wheel 5022 rotates by 1 / n angle. The screw 5031 rotates and drives the sliding pin 5036 to slide from one end of the clockwise spiral groove 5032 and the counterclockwise spiral groove 5033 to the other end. That is, the wave-shaped rack 3014 moves from the top to the bottom or the bottom to the top of the lifting track. It should be noted that in actual use, the transmission ratio of the speed regulating transmission component 501 and the output speed of the drive motor B3012 need to be adjusted so that when the gear 3013 is at the trough of the wave rack 3014, the wave rack 3014 will rise or fall. When the wave-shaped rack 3014 moves to the bottom of the lifting track, the gear 3013 disengages from the wave-shaped rack 3014, and the driven groove wheel 5022 enters a resting state. The sealing spray component 2 stops at the trough. The resting time of the driven groove wheel 5022 allows the screen cylinder 101 to rotate at least one revolution, that is, the sealing spray component 2 sprays and cleans one revolution of the screen cylinder 101 directly below it. Then the driven groove wheel 5022 enters the rotation period, driving the wave-shaped rack 3014 to move to the top of the lifting track and engage with the gear 3013. The gear 3013 rotates, causing the sealing spray component 2 to move from this trough to the next trough, and so on. The wave-type drive component 301 and wave-type guide component 302 can drive the sealing spray component 2 to move along the wave-shaped trajectory. The drive motor A4 can also drive the sealing spray component 2 to achieve intermittent translation and stop at the trough of the wave through the speed adjustment and transmission component 501, in conjunction with the intermittent transmission component 502 and the reciprocating lifting transmission component 503. At this time, the screen rotates and the screen is cleaned once. When moving, it moves towards the crest of the wave and moves in the direction away from the screen, reducing the friction between the screen and the rotating screen during the movement, and keeping the screening work of the screen and the movement of the sealing spray component 2 smooth. A rigid sealing ring 203 is installed at the bottom of the sealing cover 201, and a flexible sealing ring 204 is installed on the outer wall of the rigid sealing ring 203. Several ball bearings are embedded and rotatably connected at the bottom of the rigid sealing ring 203. The flexible sealing ring 204 can be made of rubber or silicone to ensure dynamic sealing with the surface of the rotating screen cylinder 101 and reduce pressure leakage. Several ball bearings are embedded at the bottom of the rigid sealing ring 203 to reduce frictional resistance with the surface of the screen cylinder 101. The combination of the rigid sealing ring 203 and the flexible sealing ring 204 increases the sealing performance and avoids the problem of frequent replacement due to easy wear of the flexible sealing ring 204 when used alone (the existing external air supply devices such as air blowers and air pumps, drive motor A4 and drive motor B3012 of the connecting air pipe 202 are all existing products and are all connected to external power supply and external switch).

[0034] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A grain processing inspection and screening machine with dust removal effect, characterized in that, It includes a drum screening assembly (1), which includes a screen cylinder (101) that can be driven by a drive motor A (4); A sealing spray nozzle (2) is installed above the screen cylinder (101); The wave-shaped drive component (301) includes a movable frame (3011) with a sealing spray component (2) mounted on the bottom. A gear (3013) is rotatably mounted on the outer side wall of the movable frame (3011). The gear (3013) can be driven by a drive motor B (3012). A wave-shaped rack (3014) is meshed with the bottom of the gear (3013). The wave-shaped guide (302) can be used in conjunction with the wave-shaped drive (301) to make the sealing spray component (2) translate along the wave-shaped trajectory; The speed regulating transmission component (501) can be driven by the drive motor A (4); An intermittent transmission component (502) is installed at the power output end of the speed regulating transmission component (501); The reciprocating lifting transmission component (503) is set at the power output end of the intermittent transmission component (502). It can work with the speed regulating transmission component (501) and the intermittent transmission component (502) to drive the wave-shaped rack (3014) to reciprocate intermittently, so that the sealing spray component (2) can move intermittently along the wave-shaped trajectory and stop at the trough. The intermittent duration can make the screen cylinder (101) rotate at least one revolution.

2. The grain processing inspection and screening machine with dust removal effect according to claim 1, characterized in that, A rotating shaft (102) is installed at the center of the screen cylinder (101). Material troughs (103) are installed at both ends and the bottom of the screen cylinder (101). A frame (104) is provided below the screen cylinder (101) and is rotatably connected to the top of the frame (104).

3. A grain processing inspection and screening machine with dust removal effect according to claim 2, characterized in that, The sealing spray component (2) includes a sealing cover (201), on the top of which is an air pipe (202) and connected to an air supply assembly.

4. A grain processing inspection and screening machine with dust removal effect according to claim 3, characterized in that, A rigid sealing ring (203) is installed at the bottom of the sealing cover (201), and a flexible sealing ring (204) is installed on the outer wall of the rigid sealing ring (203). Several balls are embedded and rotatably connected at the bottom of the rigid sealing ring (203).

5. A grain processing inspection and screening machine with dust removal effect according to claim 4, characterized in that, Several sliding components (303) are provided above the screen cylinder (101). The sliding components (303) include a slide block (3031) fixed to the top of the frame (104). A sliding member (3032) is slidably connected to the outer wall of the slide block (3031). The sliding member (3032) is fixed to the outer wall of the wave-shaped rack (3014).

6. A grain processing inspection and screening machine with dust removal effect according to claim 5, characterized in that, The wave-shaped guide (302) includes a wave-shaped guide rod (3022) fixed to the top of the frame (104), and a guide sleeve (3021) is slidably connected to the outer wall of the wave-shaped guide rod (3022), and the guide sleeve (3021) is disposed on the outer wall of the movable frame (3011).

7. A grain processing inspection and screening machine with dust removal effect according to claim 2, characterized in that, The outer wall of the frame (104) is also equipped with a transmission assembly (5), the transmission assembly (5) includes a speed regulating transmission component (501), the speed regulating transmission component (501) includes a pulley (5011), there are several pulleys (5011) with different diameters, and the outer wall of the pulley (5011) is connected to a belt body (5012).

8. A grain processing inspection and screening machine with dust removal effect according to claim 7, characterized in that, The intermittent transmission component (502) includes an active disk (5021) that can be driven by a drive motor A (4), and the power output end of the active disk (5021) is connected to a driven groove wheel (5022).

9. A grain processing inspection and screening machine with dust removal effect according to claim 8, characterized in that, The reciprocating lifting transmission component (503) includes a lead screw (5031), and the power input end of the lead screw (5031) is connected to a driven groove wheel (5022) through a speed regulating transmission component (501).

10. A grain processing inspection and screening machine with dust removal effect according to claim 9, characterized in that, The lead screw (5031) has a clockwise spiral groove (5032) and a counterclockwise spiral groove (5033) on its outer side wall, and the clockwise spiral groove (5032) and the counterclockwise spiral groove (5033) are connected end to end. A sliding pin (5036) is slidably connected in the groove of the lead screw (5031). A sliding sleeve (5035) is fixed on the outer side wall of the sliding pin (5036). A sliding rod (5034) is provided on the inner side wall of the sliding sleeve (5035) and can slide along the outer side wall of the sliding rod (5034).

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