A grain drying device capable of removing impurities

Abstract

The present invention relates to the technical field of agricultural machinery, and in particular to a grain drying device capable of removing impurities; the device comprises a cylinder; a feeding mechanism is arranged on the upper end surface of the cylinder, a de-impurity mechanism is arranged inside the cylinder, and a stirring mechanism is arranged below the de-impurity mechanism; the present invention solves the problems that corn kernels are piled up together, some impurity particles are mixed in the corn kernels, thus causing unclean separation and affecting the efficiency of later drying of the corn kernels, and floating bran is scattered over a large area, and the blowing path cannot be limitedly controlled, thus affecting the separation quality, and the floating bran blown out is scattered over a large area, polluting the environment and blocking the operator's working field. The present invention improves the processing quality of impurities in corn kernels and ensures the drying efficiency of corn kernels.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery, and in particular to a grain drying device capable of removing impurities. Background Art

[0002] Grain needs to be dried in time after harvest to ensure its edible quality and storage conditions and to avoid mildew and germination. The commonly used drying method is drying in the sun, but the drying method is less efficient, so most people use drying equipment to improve drying efficiency.

[0003] However, the current drying equipment has the following main problems in the process of drying grain: 1. For example, when drying corn kernels, multi-layer screening is performed through a multi-segment filter to separate the corn kernels and dust particles. However, when screening only through a fixed filter, the corn kernels pile up together, and some impurity particles will be mixed in the corn kernels, resulting in incomplete separation, which in turn affects the efficiency of the later drying of the corn kernels.

[0004] 2. After the corn kernels are collected, they will be mixed with floating bran. The floating bran is lighter and the filter cannot effectively separate it. The blower is often installed with a corn kernel falling path to blow out the floating bran. However, the blown floating bran will drift over a large area and the blowing path cannot be limitedly controlled, thus affecting the separation quality. The blown floating bran will drift over a large area, polluting the environment and blocking the operator's working field of vision.

[0005] Therefore, in order to improve the processing quality of impurities in corn kernels and ensure the drying efficiency of corn kernels, the present invention provides a grain drying equipment capable of removing impurities. Summary of the invention

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a grain drying equipment capable of removing impurities, comprising a cylinder; a feeding mechanism is arranged on the upper end surface of the cylinder, an impurity removal mechanism is arranged inside the cylinder, and a stirring mechanism is arranged below the impurity removal mechanism.

[0007] The impurity removal mechanism includes a material guide pipe, and a dust suction unit is symmetrically arranged on the left and right outer walls of the cylinder. The bottom wall of the inner cavity of the cylinder is coaxially rotatably connected with the material guide pipe, the lower end of the material guide pipe extends to the outside of the cylinder, and the material guide pipe part outside the cylinder is installed with a sprocket, and the upper end surface of the material guide pipe is provided with a screening unit, a round tube is installed above the screening unit through a support rod, a T-shaped rod is installed inside the round tube through the support rod, and a blowing unit is arranged on the T-shaped rod.

[0008] The described screening unit includes a funnel. The upper end surface of the material guiding pipe is provided with a funnel communicated with the inner cavity of the material guiding pipe. The funnel is in a frustum-shaped structure with a large upper part and a small lower part. A blowing member is arranged on the outer wall of the funnel. The upper end surface of the funnel is evenly provided with notches along its circumferential direction. A net plate is hinged in each notch through a support. The adjacent two net plates are connected by an elastic band, and the net plate elastic band closes the upper end surface of the funnel. A vibrating member is jointly arranged on the side of the net plate close to the axis of the material guiding pipe, and the vibrating member cooperates with the blowing and dispersing unit. A fitting member in contact with the net plate is arranged at the lower part of the T-shaped rod.

[0009] Preferably, the dust suction unit includes a fixed block. A fixed block is symmetrically installed on the circumferential outer wall of the sleeve on the left and right. The upper part of the fixed block is provided with a dust suction channel communicated with the inside of the cylinder column. A drainage channel is opened on the fixed block below the dust suction channel. The drainage channel is in a C-shaped structure, and both openings of the drainage channel are located outside the cylinder column. An inclined groove is communicated between the drainage channel and the dust suction channel. A feeding pipe is installed at the lower opening of the drainage channel, and a drawstring bag is installed on the lower end surface of the feeding pipe.

[0010] Preferably, the blowing and dispersing unit includes a material guiding plate. A material guiding plate is installed on the upper end surface of the T-shaped rod, and the material guiding plate is in a frustum-shaped structure. A double-shaft motor is installed inside the T-shaped rod. The upper shaft head of the double-shaft motor extends above the material guiding plate. A hair dryer is installed on the shaft head part of the double-shaft motor above the material guiding plate. A protective cover is installed above the material guiding plate through a support rod, and ventilation holes are opened on the protective cover. A vibrating member is arranged between the lower shaft head of the double-shaft motor and the net plate.

[0011] Preferably, the vibrating member includes a driving column. A driving column is installed on the lower output shaft of the double-shaft motor. A shaft column is slidably connected to the output shaft of the double-shaft motor below the driving column. A C-shaped plate is installed on the upper end surface of the shaft column. A limiting rod is arranged above the driving column, and the limiting rod is slidably connected to the upper horizontal section of the C-shaped plate. A connecting rod is installed on the side of the net plate close to the axis of the material guiding pipe. The connecting rods are jointly hinged to a shaft plate on the side close to the axis of the material guiding pipe, and the shaft plate is connected to the shaft column through a bearing. A track groove is opened on the circumferential outer wall of the driving column along its circumferential direction, and the track groove is in a wavy structure. A roller is arranged between the vertical section of the C-shaped plate and the driving column, and the outer wall of the roller is in contact with the wavy inner wall of the track groove.

[0012] Preferably, the feeding mechanism includes a feed bin. A feed bin is installed on the upper end surface of the cylinder column. A partition is installed inside the feed bin. The partition divides the lower end surface of the feed bin into two outlets. A screw rod is hinged between the feed bin and the cylinder column, and spiral blades with opposite spiral directions are arranged on the left and right parts of the screw rod. Stirring plates are arranged at both ends of the screw rod. A discharge pipe communicated with the cylinder column and the feed bin is arranged below the middle part of the screw rod.

[0013] Preferably, the stirring mechanism includes a heating tube, which is installed on the lower end surface of the inner cavity of the column, a fixed plate is arranged above the heating tube, and a blower is symmetrically arranged on the left and right of the fixed plate, a ventilation plate is obliquely installed above the fixed plate, and a stirring rod is evenly connected to the top of the ventilation plate for rotation, a square opening is opened in the column part at one end of the stirring rod, and the end of the ventilation plate close to the feeding rod is lower than the end away from the feeding rod, the feeding rod is hinged inside the square opening, and a guide plate is installed at the square opening position outside the column.

[0014] Preferably, the fitting comprises a pressure ring, the vertical section of the T-shaped rod is slidably connected with the pressure ring, the lower end face of the pressure ring is provided with heat-resistant rubber that contacts the mesh plate, and a compression spring is installed between the upper end face of the pressure ring and the horizontal section of the T-shaped rod.

[0015] Preferably, the blowing member includes an air inlet pipe, the circumferential outer wall of the upper part of the funnel is evenly provided with air inlet pipes along its circumferential direction, and the air inlet pipes are connected with the inside of the funnel, and an isolation net is installed at the opening outside the air inlet pipe.

[0016] The beneficial effects of the present invention are:

[0017] 1. The present invention uses a dust removal mechanism to absorb and discharge the floating bran through a dust suction unit, and then separates the dust particles from the corn kernels through a screening unit, thereby ensuring the cleanliness of the grain, thereby reducing the occupied space, ensuring the drying quality, and improving the drying efficiency;

[0018] Second, the dust collection unit provided in the present invention uses the negative pressure principle to suck the floating bran from the inside of the column and blow it out through the guide channel, and then collect it in a centralized manner through the drawstring bag, thereby preventing the floating bran from floating and polluting the environment;

[0019] 3. The screening unit provided in the present invention generates centripetal force through the rotation of the guide pipe, so that the corn kernels are evenly dispersed to the outside of the mesh plate. At the same time, the shaft column drives the mesh plate to shake frequently with the rotation of the hair dryer, thereby ensuring the falling of the impurity particles and being discharged through the guide pipe for centralized collection and treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0021] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0022] Figure 2 is a cross-sectional view of the present invention (hiding the feed pipe and the drawstring bag);

[0023] Figure 3 The present invention Figure 2 A local enlarged view of point A in FIG.

[0024] Figure 4 is a partial cross-sectional view of the stirring mechanism of the present invention;

[0025] Figure 5 is a schematic diagram of a partial structure of the impurity removal mechanism of the present invention;

[0026] Figure 6 is a schematic diagram of the structure of the vibrating member of the present invention.

[0027] In the figure: 1, cylindrical column; 2, feeding mechanism; 3, impurity removal mechanism; 4, stirring mechanism; 30, guide pipe; 31, sprocket; 32, round pipe; 33, T-shaped rod; 5, dust suction unit; 6, screening unit; 7, blowing unit; 60, funnel; 61, notch; 62, mesh plate; 63, elastic band; 64, blowing part; 8, vibrating member; 9, fitting part; 50, fixing block; 51, dust suction channel; 52, drainage channel; 53, chute; 54, feeding pipe; 55, drawstring bag; 70, guide plate; 71, double-shaft motor; 72, blower; 73, protective cover; 80, driving column; 81, shaft column; 82, C-shaped plate; 83, limiting rod; 84, connecting rod; 85, shaft plate; 86, track groove; 87, roller; 20, silo; 21, partition; 22, auger rod; 23, feeding plate; 24, discharge pipe; 40, heating pipe; 41, fixing plate; 42, air blower; 43, ventilation plate; 44, stirring rod; 45, feeding rod; 46, guiding plate; 90, pressing ring; 91, heat-resistant rubber; 92, compression spring; 640, air inlet pipe; 641, isolation net. Detailed implementation manners

[0028] The embodiments of the present invention will be described below with reference to the accompanying drawings. In this process, to ensure the clarity and convenience of the description, we may exaggerate the widths of the lines or the sizes of the components in the drawings.

[0029] In addition, the terms used below are defined based on the functions in the present invention and may vary according to the intentions or conventions of users and operators. Therefore, these terms are defined based on the entire content of this specification.

[0030] Refer to Figure 1 and Figure 2 , a grain drying equipment capable of removing impurities, including a cylindrical column 1; a feeding mechanism 2 is provided on the upper end surface of the cylindrical column 1, an impurity removal mechanism 3 is provided inside the cylindrical column 1, and a stirring mechanism 4 is provided below the impurity removal mechanism 3.

[0031] Refer to Figure 1 and Figure 2The feeding mechanism 2 includes a silo 20, the silo 20 is installed on the upper end surface of the column 1, and a partition 21 is installed inside the silo 20. The partition 21 divides the lower end surface of the silo 20 into two outlets. An auger rod 22 is hinged between the silo 20 and the column 1, and the left and right parts of the auger rod 22 are provided with spiral blades with opposite spiral directions. The two ends of the auger rod 22 are provided with material shifting plates 23, and a discharge pipe 24 connected with the column 1 and the silo 20 is provided below the middle of the auger rod 22.

[0032] During the specific operation, the corn kernels to be processed are manually poured into the silo 20, and then the existing motor drives the auger rod 22 to rotate, and the material-prying plate 23 pushes the corn kernels out of the two outlets of the silo 20, and the pushed-out corn kernels fall onto the auger rod 22, and then the bidirectional spiral blades of the auger rod 22 drive the corn kernels to the middle part of the auger rod 22, so that the corn kernels in the silo 20 are slowly and evenly transported to the discharge pipe 24, which is convenient for the dust collection unit 5 to handle; the corn kernels in the middle part of the auger rod 22 will fall into the cylinder 1 through the discharge pipe 24, and in the process of the corn kernels falling, the dust collection unit 5 will perform the primary impurity treatment on the corn kernels, and then perform the secondary impurity treatment through the screening unit 6, and the processed corn kernels will fall to the position of the stirring mechanism 4, and the stirring mechanism 4 will stir and dry the corn kernels, and after drying, the corn kernels will be taken out for centralized storage.

[0033] See also Figure 1 and Figure 2 The impurity removal mechanism 3 includes a material guide pipe 30, and a dust suction unit 5 is symmetrically arranged on the left and right outer walls of the circumference of the column 1. The bottom wall of the inner cavity of the column 1 is coaxially connected with the material guide pipe 30, and the lower end of the material guide pipe 30 extends to the outside of the column 1, and the part of the material guide pipe 30 outside the column 1 is installed with a sprocket 31. The upper end surface of the material guide pipe 30 is provided with a screening unit 6, and a round tube 32 is installed above the screening unit 6 through a support rod, and a T-shaped rod 33 is installed inside the round tube 32 through a support rod, and a blowing unit 7 is provided on the T-shaped rod 33.

[0034] During specific operation, corn kernels fall into the interior of the cylinder 1 through the feeding mechanism 2, and then the blowing unit 7 will blow air to the corn kernels in the falling process, so that the floating bran mixed in the corn kernels will be blown up and floated inside the cylinder 1. At this time, the dust suction unit 5 will suck the floating bran out of the cylinder 1 for centralized collection and treatment. Then, the corn kernels that have undergone the initial treatment will pass through the circular tube 32 and fall into the screening unit 6. At the same time, the existing motor will drive the sprocket 31 to rotate, and the sprocket 31 will drive the guide pipe 30 to rotate, and the guide pipe 30 will drive the screening unit 6 to operate. The screening unit 6 will separate the impurity particles from the fallen corn kernels, and the separated particles will fall to the outside of the cylinder 1 through the guide pipe 30 for centralized collection and treatment.

[0035] See also Figure 1and Figure 2 The dust collection unit 5 includes a fixed block 50. A fixed block 50 is symmetrically installed on the left and right sides of the circumferential outer wall of the sleeve. A dust collection channel 51 communicating with the inside of the cylinder column 1 is provided in the upper part of the fixed block 50. A drainage channel 52 is provided on the fixed block 50 below the dust collection channel 51. The drainage channel 52 is in a U-shaped structure, and both openings of the drainage channel 52 are located outside the cylinder column 1. An inclined groove 53 is communicated between the drainage channel 52 and the dust collection channel 51. A feeding pipe 54 is installed at the lower opening of the lower part of the drainage channel 52. A drawstring bag 55 is installed on the lower end face of the feeding pipe 54.

[0036] During specific operation, an existing blower blows air into the drainage channel 52 from the upper opening of the drainage channel 52. At this time, the air flow rate inside the drainage channel 52 increases, causing a negative pressure at the opening position of the inclined groove 53 inside the drainage channel 52, and the pressure drops. Thus, the drainage channel 52 sucks air through the inclined groove 53, and the corn bran in the cylinder column 1 is sucked into the drainage channel 52 through the dust collection channel 51, blown into the feeding pipe 54 through the drainage channel 52, and dropped onto the drawstring bag 55; the drawstring bag 55 is in a normally closed state to prevent the discharged bran from spreading outside and polluting the environment. When the bran in the feeding pipe 54 accumulates too much, the drawstring bag 55 is manually opened to shake out the bran for centralized collection and treatment.

[0037] Refer to Figure 2 、 Figure 3 and Figure 5 The blowing unit 7 includes a guide plate 70. The guide plate 70 is installed on the upper end face of the T-shaped rod 33, and the guide plate 70 is in a frustum shape. A double-shaft motor 71 is installed inside the T-shaped rod 33. The upper shaft head of the double-shaft motor 71 extends above the guide plate 70. A blower 72 is installed on the shaft head part of the double-shaft motor 71 above the guide plate 70. A protective cover 73 is installed above the guide plate 70 through a support rod, and ventilation holes are provided on the protective cover 73. A vibration member 8 is arranged between the lower shaft head of the double-shaft motor 71 and the mesh plate 62.

[0038] During specific operation, when the corn kernels fall from the discharge pipe 24, the double-shaft motor 71 drives the blower 72 to rotate, and the blower 72 blows air upward, so as to blow away the bran in the corn kernels, which is convenient for the dust collection unit 5 to process the bran in the corn kernels. The protective cover 73 prevents the corn kernels from directly falling onto the blower 72, causing damage to the blower 72 and affecting the service life of the blower 72. At the same time, smaller impurities falling into the protective cover 73 will fall through the guide plate 70 and then fall through the gap between the protective cover 73 and the guide plate 70 to the screening unit 6 for screening and removal.

[0039] Refer to Figure 2 and Figure 5, the screening unit 6 includes a funnel 60. The upper end surface of the material guiding pipe 30 is provided with a funnel 60 communicated with the inner cavity of the material guiding pipe 30. The funnel 60 is in a frustum-shaped structure with a large upper part and a small lower part. A blowing member 64 is arranged on the outer wall of the funnel 60. The upper end surface of the funnel 60 is evenly provided with notches 61 along its circumferential direction. A net plate 62 is hinged in each notch 61 through a support. Adjacent two net plates 62 are connected by an elastic band 63, and the net plates 62 and the elastic band 63 close the upper end surface of the funnel 60. A vibration member 8 is commonly arranged on one side of the net plates 62 close to the axis of the material guiding pipe 30, and the vibration member 8 cooperates with the blowing and scattering unit 7. A fitting member 9 in contact with the net plate 62 is arranged at the lower part of the T-shaped rod 33.

[0040] Refer to Figure 5 , the blowing member 64 includes an air inlet pipe 640. The circumferential outer wall of the upper part of the funnel 60 is evenly provided with air inlet pipes 640 along its circumferential direction, and the air inlet pipes 640 are communicated with the inside of the funnel 60. An isolation net 641 is arranged at the opening outside the air inlet pipe 640.

[0041] During specific operation, the corn kernels that have undergone the first impurity removal treatment by the dust suction unit 5 fall onto the net plate 62. Then, the existing motor drives the material guiding pipe 30 to rotate, so that the corn kernels on the net plate 62 move outward and disperse under the action of centripetal force. At the same time, the double-shaft motor 71 drives the vibration member 8 to make the net plate 62 vibrate up and down frequently, so that the impurity particles of the corn kernels fall into the inside of the funnel 60. At the same time, with the rotation of the material guiding pipe 30, air is filled into the inside of the funnel 60, so as to blow the fallen particulate matter to the material guiding pipe 30. Then, it falls through the material guiding pipe 30 to the outside of the cylinder column 1 for centralized collection and treatment. At the same time, the fitting member 9 prevents the corn kernels from getting stuck in the gap between the net plate 62 and the T-shaped rod 33 during the up and down movement of the net plate 62, affecting its working state.

[0042] Refer to Figure 2 、 Figure 3 and Figure 6 , the vibration member 8 includes a driving column 80. A driving column 80 is installed on the lower output shaft of the double-shaft motor 71. A shaft column 81 is slidably connected to the output shaft of the double-shaft motor 71 below the driving column 80. An L-shaped plate 82 is installed on the upper end surface of the shaft column 81. A limiting rod 83 is arranged above the driving column 80, and the limiting rod 83 is slidably connected to the upper horizontal section of the L-shaped plate 82. One side of the net plate 62 close to the axis of the material guiding pipe 30 is installed with a connecting rod 84. A shaft plate 85 is commonly hinged on one side of the connecting rod 84 close to the axis of the material guiding pipe 30, and the shaft plate 85 is connected to the shaft column 81 through a bearing. A track groove 86 is formed on the circumferential outer wall of the driving column 80 along its circumferential direction, and the track groove 86 is in a wavy structure. A roller 87 is arranged between the vertical section of the L-shaped plate 82 and the driving column 80, and the outer wall of the roller 87 is in contact with the wavy inner wall of the track groove 86.

[0043] During specific operation, the corn kernels that fall onto the wire mesh plate 62 disperse outward under the action of centripetal force and then fall. During the falling process of the corn kernels, the double-shaft motor 71 will drive the driving column 80 to rotate simultaneously. During the rotation of the driving column 80, the wavy inner wall of the track groove 86抵触 the roller 87, driving the roller 87 to move up and down. The roller 87 drives the U-shaped plate 82 to move, thereby driving the shaft column 81 to move up and down. The shaft column 81 drives the wire mesh plate 62 to move up and down through the shaft plate 85, so that the wire mesh plate 62 vibrates to improve the separation effect of the corn kernels and particles.

[0044] Refer to Figure 3 and Figure 5 As shown in

[0045] During specific operation, when the wire mesh plate 62 swings upward, it will make the heat-resistant rubber 91 fit with the wire mesh plate 62 and compress the compression spring 92 at the same time. When the wire mesh plate 62 swings downward, under the action of the reset of the compression spring 92, it will push the pressure ring 90 to move towards the wire mesh plate 62, making the heat-resistant rubber 91抵触 the wire mesh plate 62, so as to ensure the seal between the wire mesh plate 62 and the T-shaped rod 33 during the up and down movement of the wire mesh plate 62, and prevent the corn kernels from getting stuck between the wire mesh plate 62 and the T-shaped rod 33, affecting the normal operation of the screening unit 6.

[0046] Refer to Figure 1 、 Figure 2 and Figure 4 As shown in

[0047] During specific operation, the air blower 42 blows hot air above the ventilation plate 43 to dry the corn kernels, and at the same time the stirring rod 44 rotates to stir the corn kernels to make the corn kernels evenly heated; when the feeding rod 45 rotates, the dried corn kernels inside the cylinder 1 can be拨出 through the guiding plate 46 and discharged for centralized collection and processing.

[0048] When the present invention is used to dry grains, the grains to be processed are first poured into the silo 20, and the auger 22 rotates to drive the grains to fall into the cylinder 1. The corn kernels are blown by the blower 72 during the falling process, so that the floating chaff floats inside the sleeve, and the impurities are sucked out by the negative pressure for centralized treatment. After that, the centrifugal force generated by the vibration and rotation of the screening unit 6 causes the impurities in the grains to fall through the guide pipe 30, and then the grains fall onto the ventilation plate 43, are evenly stirred by the stirring mechanism 4, and are heated and dried. After the drying is completed, the grains are transferred out by the feeding rod 45 for centralized collection and storage.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A grain drying device capable of removing impurities, comprising a column (1); characterized in that: The upper end surface of the cylinder (1) is provided with a feeding mechanism (2), the interior of the cylinder (1) is provided with an impurity removal mechanism (3), and a stirring mechanism (4) is provided below the impurity removal mechanism (3); wherein: The impurity removal mechanism (3) comprises a material guide pipe (30), a dust collecting unit (5) is symmetrically arranged on the left and right outer walls of the circumference of the cylinder (1), the inner cavity bottom wall of the cylinder (1) is coaxially rotatably connected with the material guide pipe (30), the lower end of the material guide pipe (30) extends to the outside of the cylinder (1), and the part of the material guide pipe (30) outside the cylinder (1) is installed with a sprocket (31), the upper end surface of the material guide pipe (30) is provided with a screening unit (6), a round tube (32) is installed above the screening unit (6) through a support rod, a T-shaped rod (33) is installed inside the round tube (32) through a support rod, and a blowing unit (7) is arranged on the T-shaped rod (33); The screening unit (6) comprises a funnel (60). The upper end surface of the material guide tube (30) is provided with a funnel (60) which is connected to the inner cavity of the material guide tube (30). The funnel (60) is in a truncated cone structure with a larger upper portion and a smaller lower portion. The outer wall of the funnel (60) is provided with a blowing member (64). The upper end surface of the funnel (60) is evenly provided with slots (61) along its circumferential direction. The slots (61) are hinged with mesh plates (62) through supports. Two adjacent mesh plates (62) are connected by elastic bands (63), and the elastic bands (63) of the mesh plates (62) seal the upper end surface of the funnel (60). A vibrating member (8) is provided on one side of the mesh plates (62) close to the axis of the material guide tube (30), and the vibrating member (8) cooperates with the blowing unit (7). The lower part of the T-shaped rod (33) is provided with a fitting member (9) which contacts the mesh plates (62). The blowing unit (7) comprises a material guide plate (70), the material guide plate (70) is installed on the upper end surface of the T-shaped rod (33), and the material guide plate (70) is in a truncated cone structure, a double-axis motor (71) is installed inside the T-shaped rod (33), the upper shaft head of the double-axis motor (71) extends to the top of the material guide plate (70), a blower (72) is installed on the shaft head part of the double-axis motor (71) above the material guide plate (70), a protective cover (73) is installed above the material guide plate (70) through a support rod, and a ventilation hole is opened on the protective cover (73), and a vibrating member (8) is arranged between the lower shaft head of the double-axis motor (71) and the mesh plate (62); The described vibrating member (8) includes a driving column (80). The driving column (80) is installed on the lower output shaft of the biaxial motor (71). A shaft column (81) is slidably connected to the output shaft of the biaxial motor (71) below the driving column (80). A C-shaped plate (82) is installed on the upper end surface of the shaft column (81). A limiting rod (83) is arranged above the driving column (80), and the limiting rod (83) is slidably connected to the upper horizontal section of the C-shaped plate (82). On the side of the mesh plate (62) close to the axis of the guide pipe (30), a connecting rod (84) is installed. The connecting rods (84) on the side close to the axis of the guide pipe (30) are jointly hinged to a shaft plate (85), and the shaft plate (85) is connected to the shaft column (81) through a bearing. A track groove (86) is formed on the circumferential outer wall of the driving column (80) along its circumferential direction, and the track groove (86) has a wavy structure. A roller (87) is arranged between the vertical section of the C-shaped plate (82) and the driving column (80), and the outer wall of the roller (87) abuts against the wavy inner wall of the track groove (86).

2. The grain drying equipment capable of removing impurities according to claim 1, characterized in that: The described dust collection unit (5) includes a fixed block (50). On the circumferential outer wall of the cylinder column (1), a fixed block (50) is installed symmetrically on the left and right. A dust collection channel (51) communicating with the inside of the cylinder column (1) is opened on the upper part of the fixed block (50). A drainage channel (52) is opened on the fixed block (50) below the dust collection channel (51). The drainage channel (52) has a C-shaped structure, and both openings of the drainage channel (52) are located outside the cylinder column (1). An inclined groove (53) is communicated between the drainage channel (52) and the dust collection channel (51). A feed pipe (54) is installed at the lower opening of the drainage channel (52), and a drawstring bag (55) is installed on the lower end surface of the feed pipe (54).

3. The grain drying equipment capable of removing impurities according to claim 1, characterized in that: The described feeding mechanism (2) includes a feed bin (20). The feed bin (20) is installed on the upper end surface of the cylinder column (1). A partition plate (21) is installed inside the feed bin (20). The partition plate (21) divides the lower end surface of the feed bin (20) into two outlets. A screw rod (22) is hinged between the feed bin (20) and the cylinder column (1), and spiral blades with opposite spiral directions are arranged on the left and right parts of the screw rod (22). Paddle plates (23) are arranged at both ends of the screw rod (22). A discharge pipe (24) communicating with the cylinder column (1) and the feed bin (20) is arranged below the middle of the screw rod (22).

4. The grain drying equipment capable of removing impurities according to claim 1, characterized in that: The described stirring mechanism (4) includes a heating pipe (40). The heating pipe (40) is installed on the lower end surface of the inner cavity of the cylinder column (1). A fixing plate (41) is arranged above the heating pipe (40). A blower (42) is arranged symmetrically on the left and right on the fixing plate (41). A ventilation plate (43) is inclinedly installed above the fixing plate (41). Stirring rods (44) are evenly rotatably connected above the ventilation plate (43). A square opening is formed in the part of the cylinder column (1) at one end of the stirring rod (44), and one end of the ventilation plate (43) close to the feeding rod (45) is lower than the end far from the feeding rod (45). A feeding rod (45) is hinged inside the square opening, and a guiding plate (46) is installed at the position of the square opening outside the cylinder column (1).

5. The grain drying equipment capable of removing impurities according to claim 1, characterized in that: The fitting (9) comprises a pressure ring (90), the vertical section of the T-shaped rod (33) is slidably connected with the pressure ring (90), and the lower end surface of the pressure ring (90) is provided with a heat-resistant rubber (91) that contacts the mesh plate (62), and a compression spring (92) is installed between the upper end surface of the pressure ring (90) and the horizontal section of the T-shaped rod (33).

6. The grain drying equipment capable of removing impurities according to claim 1, characterized in that: The blowing member (64) comprises an air inlet pipe (640), the air inlet pipe (640) is evenly installed on the circumferential outer wall of the upper part of the funnel (60) along its circumferential direction, and the air inlet pipe (640) is connected to the inside of the funnel (60), and an isolation net (641) is installed at the opening outside the air inlet pipe (640).

Images