CN112791775A

CN112791775A - Grain grinding device

Info

Publication number: CN112791775A
Application number: CN202110039775.XA
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2021-05-14

Abstract

The invention discloses a grain grinding device which comprises a shell, a grinding mechanism, a cleaning mechanism, an adjusting mechanism and a recovery mechanism, wherein a feed hopper is arranged at the upper end of the shell, the upper end of the feed hopper is conical, the lower end of the feed hopper is rectangular, a first inner cavity is communicated with the lower part of the feed hopper, the cleaning mechanism is arranged in the first inner cavity, a second inner cavity is arranged below the cleaning mechanism, the grinding mechanism is arranged in the second inner cavity, a material collecting cavity is arranged below the grinding mechanism, the recovery mechanism is arranged in the material collecting cavity, the cleaning mechanism can clean the grinding mechanism in the using process, and the adjusting mechanism can adjust the distance between an upper grinding wheel and a lower grinding wheel to be used for grinding grains with different grain sizes and different.

Description

Grain grinding device

Technical Field

The invention relates to the field of agricultural machinery, in particular to a grain grinding device.

Background

Grain milling, also known as grain processing, refers to the production activities of hulling, milling and fine finishing of grains such as rice, millet, wheat, sorghum, and the like. Grain grinding needs use corresponding grinder, can guarantee that cereal is by the intensive grinding, guarantees the grinding quality of cereal, but among the current cereal grinder, lack the cleanness to grinding the emery wheel after grinding cereal, when can leading to grinding different cereals, remain cereal and can mix together, influence finished product quality, and current cereal grinder can't be according to the size and the grinding degree of cereal granule, adjust the distance between the grinding miller, the cereal kind of grinding is more single.

Disclosure of Invention

The present invention is directed to a grain grinding device to solve the above technical drawbacks of the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a cereal grinder, grinds mechanism, clean mechanism and adjustment mechanism and retrieves the mechanism including the casing, its characterized in that: a feed hopper is arranged at the upper end of the shell, the upper end of the feed hopper is arranged to be conical, the lower end of the feed hopper is arranged to be rectangular, a first inner cavity is communicated below the feed hopper, a cleaning mechanism is arranged in the first inner cavity, a second inner cavity is arranged below the cleaning mechanism, a grinding mechanism is arranged inside the second inner cavity, a material collecting cavity is arranged below the grinding mechanism, and a recovery mechanism is arranged inside the material collecting cavity;

the cleaning mechanism comprises a first cylinder first push rod connecting block, a ventilation pipeline air outlet, a first baffle and a second baffle nut; the air outlet of the ventilating duct is integrally arranged, the right side of the second baffle is fixedly connected with a telescopic rod, the second baffle is in sliding fit with a right cavity of the first inner cavity, the telescopic rod is fixedly connected to the inner wall of the shell at the right end of the first inner cavity, a first spring is sleeved on the telescopic rod, the right end of the first spring is fixedly connected to the inner wall of the shell at the right end of the first inner cavity, the left end of the first spring is fixedly connected to the right end face of the second baffle, the initial position of the left end face of the second baffle is consistent with the position of the inner wall of the right side below the feeding hopper, the first air cylinder is fixedly connected to the inner wall of the shell at the left end of the first inner cavity, the right end of the first air cylinder is connected with a first push rod, threads are arranged on the; the left end of the connecting block is provided with a first through hole, a first push rod penetrates through the first through hole to be matched and connected with the connecting block, a nut is matched and connected with the right end of the connecting block through threads, and the connecting block is limited by the nut and a limiting ring;

preferably, an arc-shaped groove is formed in the right side of the connecting block, an annular inner hole is formed in the left side of the arc-shaped groove, the arc-shaped groove is sleeved outside the ventilating duct, a second spring is arranged in the annular inner hole, two independent connecting pipes are sleeved outside the second spring, the right sides of the two connecting pipes and the two ends of the second spring are fixedly connected with the two corresponding clamping blocks, handle grooves are formed in the left sides of the two clamping blocks, the connecting pipes are in sliding connection with the annular inner hole, T-shaped clamping grooves are formed in the clamping blocks, and locking blocks are movably connected in the T-shaped clamping grooves;

preferably, the left side of the first cylinder is fixedly connected with a touch block, the left end face of the connecting block is in threaded connection with a connecting support, a first travel switch is in threaded connection with the lower portion of the connecting support, the first travel switch is electrically connected with the first cylinder, a touch head is arranged on the left side of the first travel switch, and the horizontal height of the center of the touch head is consistent with the horizontal height of the center of the touch block; a first baffle is welded on the right side of the ventilating duct, the first baffle is L-shaped, and the distance between the surface of the right end of the first baffle and the inner wall of the left side below the feed hopper is the same as the distance between the left end face of a touch head of the first travel switch and the right end face of the touch block; the right side of the ventilation pipeline is fixedly connected with a fan, the right side of the fan is provided with a connecting ring, the connecting ring is sleeved on the ventilation pipeline, the upper end of the connecting ring is in threaded connection with a second travel switch, the second travel switch is electrically connected with the first air cylinder, and the contact head of the second travel switch faces the right end;

preferably, the grinding mechanism comprises an upper grinding wheel, a lower grinding wheel, a supporting block, a first motor, a second motor and a second air cylinder, a second inner cavity is arranged below the first inner cavity, the first inner cavity is communicated with the second inner cavity, the upper grinding wheel is rotatably matched in the second inner cavity through a bearing, the upper grinding wheel is annular, a through hole is formed in the middle of the upper grinding wheel, a gear ring is arranged on the periphery of the outer surface of the upper grinding wheel, the gear ring is meshed with a right-side conical gear, the right side of the conical gear is rotatably connected with the second motor through a second rotating shaft, and the second motor is fixedly connected to the inner wall of the shell;

preferably, a lower grinding wheel is arranged below the upper grinding wheel, and the axis of the upper grinding wheel is superposed with the axis of the lower grinding wheel; the lower surface of the lower grinding wheel is provided with an annular chute, and a ball is connected in the annular chute in a sliding manner; a supporting block is arranged below the lower grinding wheel, an annular chute is also formed in the upper surface of the supporting block, and the lower grinding wheel and the supporting block are in running fit with the annular chute through balls; a placing groove is formed in the supporting block, a first motor is fixedly connected to the bottom of the placing groove, a first rotating shaft of the first motor is fixedly connected with the lower grinding wheel, heat dissipation holes are formed in the supporting block and are distributed at equal intervals, an annular limiting groove is formed in the side surface of the supporting block, limiting columns are welded on the inner wall of the second inner cavity corresponding to the notch of the annular limiting groove, the number of the limiting columns is 2, the limiting columns are symmetrically distributed on the left side and the right side of the axis of the lower grinding wheel, a limiting stop block is fixedly connected to one side, close to the annular limiting groove, of each limiting column, and each limiting stop block is arc-shaped;

preferably, the adjusting structure comprises a second push rod, a second cylinder, a base, a graduated scale and a support column, the second push rod is fixedly connected below the support block, the second cylinder is fixedly connected to the second push rod, the second cylinder is fixedly connected to the upper surface of the base, the support columns are welded in the front, back, left and right directions of the side surface of the base, and the other ends of the support columns are welded with the inner wall of the second inner cavity respectively; the base top is located the right side of second cylinder and still fixed connection scale the scale runs through the second through-hole of supporting shoe bottom and extends to inside the standing groove. A protective cover is arranged below the lower grinding wheel, a waist-shaped hole and a third through hole which are matched with the limiting column and the supporting column are formed in the protective cover, and the protective cover is sleeved outside the adjusting structure through the matching of the waist-shaped hole and the third through hole, the limiting column and the supporting column;

as preferred, retrieve the mechanism and include the chamber of gathering materials, gather materials case, handle, gyro wheel, the intracavity portion of gathering materials is equipped with the case of gathering materials, the bottom of case of gathering materials is equipped with the gyro wheel, the right side of case of gathering materials is equipped with the handle.

Compared with the prior art, this beneficial effect is:

1. be provided with the regulation structure, like the maize when needing the different cereal of abrasive grain size in the use, wheat, highland barley etc, according to cereal grain's size, it reciprocates to drive second push rod promotion supporting shoe through the second cylinder, and then the grinding miller reciprocates under driving through the supporting shoe, adjust the distance between two grinding millers, and the distance that the grinding miller removed under can accurate control through the scale, make distance between two grindings agree with cereal grain's size more, also can adjust the degree of grinding according to the demand, and the degree of control grinding that can be more accurate.

2. Be provided with clean mechanism, when cereal grinds the end, first cylinder drives first push rod and promotes the connecting block and remove right, and the connecting block drives air pipe and air outlet and removes right, starts the fan and bloies to the grinding mechanism of below, blows away the remaining cereal powder on the grinding mechanism, has both reached clear effect, also when making to grind different cereals, the finished product purity that obtains is higher, also can be for grinding different cereals.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a front cross-sectional view of the present invention;

FIG. 3 is a partial top view of the connector block of the present invention;

FIG. 4 is a schematic view of the support block configuration of the present invention;

FIG. 5 is a schematic view of a protective cover according to the present invention;

in the figure: 1. a housing; 2. a first baffle plate; 3. connecting blocks; 4. a feed hopper; 5. a second travel switch; 6. A connecting ring; 7. a fan; 8. connecting a bracket; 9. a touch head; 10. a first lumen; 11. a touch block; 12. a first cylinder; 13. a first push rod; 14. a limiting ring; 15. a nut; 16. an upper grinding wheel; 17. an annular limiting groove; 18. a limiting column; 19. a first motor; 20. a second push rod; 21. a base; 22. a material collecting box; 23. a roller; 24. a handle; 25. a support pillar; 26. a material collecting cavity; 27. a graduated scale; 28. a support block; 29. a first rotating shaft; 30. heat dissipation holes; 31. a ball bearing; 32. a lower grinding wheel; 33. a toothed ring; 34. a bevel gear; 35. a second motor; 36. a first spring; 37. a telescopic rod; 38. A second baffle; 39. a second rotating shaft; 40. a ventilation duct; 41. an air outlet; 42. a second lumen; 43. a first through hole; 44. an arc-shaped groove; 45. an annular inner bore; 46. a second spring; 47. a clamping block; 48. a handle slot; 49. a connecting pipe; 50. a T-shaped clamping groove; 51. a locking block; 52. an annular chute; 53. a limit stop block; 54. A second through hole; 55. a protective cover; 56. a third through hole; 57. a waist-shaped hole; 58. a second cylinder; 59. a first travel switch; 60. and (6) placing the groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a cereal grinder, includes casing 1, grinds mechanism, clean mechanism and adjustment mechanism and retrieves the mechanism, its characterized in that: the upper end of the shell 1 is provided with a feed hopper 4, the upper end of the feed hopper 4 is arranged to be conical, the lower end of the feed hopper 4 is arranged to be rectangular, a first inner cavity 10 is communicated below the feed hopper 4, a cleaning mechanism is arranged in the first inner cavity 10, a second inner cavity 42 is arranged below the cleaning mechanism, a grinding mechanism is arranged in the second inner cavity 42, a material collecting cavity 26 is arranged below the grinding mechanism, and a recovery mechanism is arranged in the material collecting cavity 26;

the cleaning mechanism comprises a first cylinder 12, a first push rod 13, a connecting block 3, a ventilating duct 40, an air outlet 41, a first baffle plate 2, a second baffle plate 38 and a nut 15; the ventilating duct 40 and the air outlet 41 are integrally arranged, the right side of the second baffle 38 is fixedly connected with an expansion link 37, the second baffle 38 is in sliding fit with the right cavity of the first inner cavity 10, the expansion link 37 is fixedly connected on the inner wall of the shell 1 at the right end of the first inner cavity 10, a first spring 36 is sleeved on the expansion link 37, the right end of the first spring 36 is fixedly connected on the inner wall of the shell 1 at the right end of the first inner cavity 10, the left end of the first spring 36 is fixedly connected on the right side of the second baffle 38, the initial position of the left side of the second baffle 38 is consistent with the position of the rectangular right inner wall below the feed hopper 4, when the cleaning structure works, when the first baffle 2 moves rightwards, the second baffle 38 is pushed to compress the first spring 36 to enable the expansion link 37 to move rightwards, when the cleaning mechanism works, the first spring 36 has no resistance and can push the second, returning to the initial position, closing the cavity on the right side of the first inner cavity 10 to prevent grains from entering the cavity on the right side of the first inner cavity 10 during feeding;

the first cylinder 12 is fixedly connected to the inner wall of the shell 1 at the left end of the first inner cavity 10, the right end of the first cylinder 12 is connected with a first push rod 13, the surface of the right end of the first push rod 13 is provided with threads, and the right end of the first push rod 13 is welded with a limit ring 14; the left end of the connecting block is provided with a first through hole 43, the first push rod 13 penetrates through the first through hole 43 to be connected with the connecting block 3 in a matched mode, the nut 15 is connected with the right end of the connecting block 3 in a matched mode through threads, the connecting block is limited by the nut 15 and the limiting ring 14, and the first push rod 13 enables the connecting block to move left and right through the nut 15 and the limiting ring 14;

the right side of the connecting block 3 is provided with an arc-shaped groove 44, the arc-shaped groove 44 is sleeved outside the ventilation duct 40, the left side of the arc-shaped groove 44 is provided with an annular inner hole 45, a second spring 46 is arranged inside the annular inner hole 45, two connecting pipes 49 which are not communicated with each other are sleeved outside the second spring 46, the right ends of the two connecting pipes 49 and the two ends of the second spring 46 are fixedly connected with the two clamping blocks 47, the left sides of the two clamping blocks 47 are provided with handle grooves 48, the connecting pipes 49 are in sliding fit with the annular inner hole 45, the clamping blocks 47 are internally provided with T-shaped clamping grooves 50, locking blocks 51 are movably connected in the T-shaped clamping grooves 50, when in use, the handle grooves 48 can be abutted by hands, the connecting pipes 49 can be pulled out from the annular inner hole 45, the locking blocks 51 can be further clamped in the T-shaped clamping grooves 50 of the two clamping blocks 47, the ventilating duct 40 is L-shaped, the air outlet 41 is conical, the connecting block 3 and the connecting block are difficult to install together, and the clamping structure is more convenient to install and disassemble and is also convenient to replace and maintain;

the left side of the first cylinder 12 is fixedly connected with a touch block 11, the left end face of the connecting block 3 is in threaded connection with a connecting bracket 8, the lower part of the connecting bracket 8 is in threaded connection with a first travel switch 59, the first travel switch 59 is electrically connected with the first cylinder 12, the left side of the first travel switch 59 is provided with a touch head 9, and the horizontal height of the center of the touch head 9 is consistent with the horizontal height of the center of the touch block 11; the right side of the ventilation pipeline 40 is welded with a first baffle 2, the first baffle 2 is L-shaped, the distance between the right end surface of the first baffle 2 and the left side inner wall below the feed hopper 4 is the same as the distance between the left end surface of a touch head 9 of a first travel switch 59 and the right end surface of a touch block 11, when the cleaning structure finishes working, the first cylinder 12 drives the connecting block 3 to move leftwards through the first push rod 13, the ventilation pipeline 40 further moves leftwards, the first baffle 2 and the first travel switch 59 also move leftwards, when the touch head 9 of the first travel switch 59 touches the touch block 11, the first travel switch 59 stops working of the first cylinder 12, at the moment, the right end surface of the first baffle 2 moves to the position of the left side inner wall below the feed hopper 4, and grains are prevented from entering a left side cavity of the first inner cavity 10 during feeding;

the left side of the ventilation pipeline 40 is fixedly connected with a fan 7, the right side of the fan 7 is provided with a connecting ring 6, the connecting ring 6 is sleeved on the ventilation pipeline 40, the upper end of the connecting ring 6 is in threaded connection with a second travel switch 5, the second travel switch 5 is electrically connected with a first air cylinder 12, and the touch head of the second travel switch 5 faces towards the right end, when the cleaning work starts, the first air cylinder 12 drives the connecting block 3 to move rightwards through a first push rod 13, so that the ventilation pipeline 40 further moves rightwards, further the connecting ring 6 on the ventilation pipeline 40 drives the second travel switch 5 to move rightwards, when the touch head of the second travel switch 5 moves rightwards and touches the left end surface of the inner wall at the lower left of the feeding hopper 4, the second travel switch 5 stops the first air cylinder 12 from working, at the moment, the air outlet 41 just moves to the position where the axis of, the cleaning effect is improved, and the technical problem that a worker cannot accurately control the distance of the air cylinder moving rightwards is solved;

the grinding mechanism comprises an upper grinding wheel 16, a lower grinding wheel 32, a supporting block 28, a first motor 35, a second motor 19 and a second air cylinder 58, a second inner cavity 42 is arranged below the first inner cavity 10, the first inner cavity 10 is communicated with the second inner cavity 42, the upper grinding wheel 16 is rotatably matched in the second inner cavity 42 through a bearing, the upper grinding wheel is annular, a through hole is formed in the middle of the upper grinding wheel, a toothed ring 33 is arranged on the periphery of the outer surface of the upper grinding wheel 16, the toothed ring 33 is meshed with a right conical gear 34, the right side of the conical gear 34 is rotatably connected with the second motor 35 through a second rotating shaft 39, the second motor 35 is fixedly connected to the inner wall of the shell 1, the second motor 35 drives the conical gear 34 to rotate through the second rotating shaft 39, and the conical gear 34 drives the toothed ring 33 to drive the upper grinding wheel 16 to;

a lower grinding wheel 32 is arranged below the upper grinding wheel 16, and the axle center of the upper grinding wheel 16 is superposed with the axle center of the lower grinding wheel 32; the lower surface of the lower grinding wheel 32 is provided with an annular sliding chute 52, and a ball 31 is connected in the annular sliding chute 52 in a sliding way; a supporting block 28 is arranged below the lower grinding wheel 32, an annular chute 52 is also formed in the upper surface of the supporting block 28, the lower grinding wheel 32 and the supporting block 28 are in running fit with the annular chute 52 through balls 31, the lower grinding wheel 32 can be guaranteed to be more stable in running through the supporting block 28, the load of the first rotating shaft is reduced, and the structural strength is improved;

a placing groove 60 is formed in the supporting block 28, a first motor 19 is fixedly connected to the bottom of the placing groove 60, a first rotating shaft 29 of the first motor 19 is fixedly connected with the lower grinding wheel 32, heat dissipation holes 30 are formed in the supporting block 28, the heat dissipation holes 30 are distributed at equal intervals, an annular limiting groove 17 is formed in the side surface of the supporting block 28, a limiting post 18 is welded on the inner wall of the second inner cavity 42 corresponding to the notch of the annular limiting

groove

17, 2 limiting posts 18 are arranged, the limiting posts 18 are symmetrically distributed on the left side and the right side of the axis of the lower grinding wheel 32, a limiting stop 53 is fixedly connected to one side of the limiting post 18 close to the annular limiting groove 17, the limiting stop 53 is arc-shaped, the first motor 19 drives the lower grinding wheel 32 to rotate through the first rotating shaft 29, the limiting stop 53 limits the up-and-down movement distance of the lower grinding wheel, and avoids collision between the lower, and to prevent the lower grinding wheel from colliding with the scale 27 when moving downward;

the adjusting structure comprises a second push rod 20, a second air cylinder 58, a base 21, a graduated scale 27 and a support pillar 25, wherein the second push rod 20 is fixedly connected below a support block 28, the second air cylinder 58 is fixedly connected to the second push rod 20, the second air cylinder 58 is fixedly connected to the upper surface of the base 21, the support pillars 25 are welded in the front, back, left and right directions on the side surface of the base 21, the other ends of the support pillars 25 are respectively welded with the inner walls of a second inner cavity 42, the lower grinding wheel 32 is indirectly and fixedly connected with the whole shell 1 through the support pillars 25, and the upper grinding wheel 16 is rotatably matched in the second inner cavity 42 through a bearing, so that the upper grinding wheel 16 and the lower grinding wheel 32 are integrated, and the phenomenon that workers need to spend much effort to align the axes of the upper grinding wheel and the lower grinding;

the upper part of the base 21 is positioned at the right side of the second cylinder 58 and is fixedly connected with a graduated scale 27, and the graduated scale 27 penetrates through the second through hole 54 at the bottom of the supporting block 28 and extends to the inside of the placing groove 60. A protective cover 55 is arranged below the lower grinding wheel 32, a waist-shaped hole 57 and a third through hole 56 which are matched with the limiting column 18 and the supporting column 25 are formed in the protective cover 55, the protective cover 55 is sleeved outside the adjusting structure through the waist-shaped hole 57 and the third through hole 56, the limiting column 18 and the supporting column 25, the second push rod 20 is driven by the second air cylinder 58 to push the supporting block 28 to move up and down, the lower grinding wheel is driven by the supporting block 28 to move up and down, the distance between the two grinding wheels is adjusted, the moving distance of the lower grinding wheel can be accurately controlled through a graduated scale, the distance between the two grindings is more matched with the size of grain particles, the grinding degree can be adjusted according to requirements, and the grinding degree can be more accurately controlled;

the recycling mechanism comprises a collecting cavity 26, a collecting box 22, a handle 24 and a roller 23, the collecting box 22 is arranged in the collecting cavity 26, the roller 23 is arranged at the bottom of the collecting box 22, the handle 24 is arranged on the right side of the collecting box 22, the collecting box 55 can be pulled to move in the collecting cavity 26 through the handle 24, and material taking is more convenient.

The working principle is as follows: when the grain grinder is used, the first motor drives the lower grinding wheel to rotate, the second motor drives the upper grinding wheel to rotate to grind grains, the distance between the upper grinding wheel and the lower grinding wheel is adjusted by the adjusting mechanism when grains with different grain sizes and different grinding degrees are required to be ground, when grinding is finished, the first air cylinder drives the ventilation pipeline and the air outlet to move rightwards, when the air outlet axis is moved to be aligned with the upper grinding wheel axis, the fan is opened, the grinding mechanism is cleaned, and the material collecting box is pulled out of the material collecting cavity by the pulling handle.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a cereal grinder, includes casing (1), grinds mechanism, clean mechanism and adjustment mechanism and retrieves the mechanism, its characterized in that: the upper end of casing (1) is provided with feeder hopper (4), feeder hopper (4) upper end sets up to conical, and the lower extreme sets up to the rectangle, the below intercommunication of feeder hopper (4) has first inner chamber (10), install clean mechanism in first inner chamber (10), the below of clean mechanism is equipped with second inner chamber (42), and the internally mounted of second inner chamber (42) has grinding mechanism, the below of grinding mechanism is equipped with material collecting cavity (26), and material collecting cavity (26) internally mounted has recovery mechanism.

2. The grain grinding apparatus as set forth in claim 1, wherein: clean mechanism is including first cylinder (12), first push rod (13), connecting block (3), air pipe (40), air outlet (41), first baffle (2), second baffle (38), nut (15), air pipe (40), air outlet (41) formula setting as an organic whole, second baffle (38) right side fixedly connected with telescopic link (37), and the right side cavity sliding fit of second baffle (38) and first inner chamber (10), telescopic link (37) fixed connection has cup jointed first spring (36) on casing 1 inner wall of first inner chamber 10 right-hand member, first spring (36) right-hand member fixed connection is on casing (1) inner wall of first inner chamber (10) right-hand member, first spring (36) left end fixed connection is on second baffle (38) right flank, the left flank initial position of second baffle (38) and the position of feeder hopper (4) below rectangle right side inner wall Keeping the consistency, the first cylinder (12) is fixedly connected to the inner wall of the shell (1) at the left end of the first inner cavity (10), the right end of the first cylinder (12) is connected with a first push rod (13), the right end surface of the first push rod (13) is provided with threads, and the right end of the first push rod (13) is welded with a limit ring (14); first through-hole (43) have been seted up to the left end of connecting block (3), and first push rod (13) run through first through-hole (43) and are connected with connecting block (3) cooperation, nut (15) are connected through the right-hand member cooperation of screw thread with connecting block (3), connecting block (3) are spacing by nut (15) and spacing ring (14).

3. The grain grinding apparatus as set forth in claim 2, wherein: arc recess (44) have been seted up on the right side of connecting block (3), arc recess (44) cup joint in the outside of air pipe (40) the left side of arc recess (44) is equipped with annular hole (45), inside second spring (46) that is equipped with of annular hole (45), two independent connecting pipe (49) have been cup jointed to the outside of second spring (46), and the right side of two connecting pipes (49) and the both ends of second spring (46) all with two block (47) fixed connection that correspond, handle groove (48) have all been seted up in the left side of two block (47), connecting pipe (49) and annular hole (45) sliding fit, inside T style of calligraphy draw-in groove (50) that all is equipped with of block (47), swing joint has latch segment (51) in T style of calligraphy draw-in groove (50).

4. The grain grinding apparatus as set forth in claim 2, wherein: the left side of the first air cylinder (12) is fixedly connected with a touch block (11), the left end face of the connecting block (3) is in threaded connection with a connecting support (8), the lower portion of the connecting support (8) is in threaded connection with a first travel switch (59), the first travel switch (59) is electrically connected with the first air cylinder (12), a touch head (9) is arranged on the left side of the first travel switch (59), and the horizontal height of the center of the touch head (9) is consistent with the horizontal height of the center of the touch block (11); a first baffle (2) is welded on the right side of the ventilation pipeline (40), the first baffle (2) is L-shaped, and the distance between the right end surface of the first baffle (2) and the inner wall of the left side below the feed hopper (4) is the same as the distance between the left end surface of a touch head (9) of the first travel switch (59) and the right end surface of a touch block (11); the left side fixedly connected with fan (7) of air pipe (40), the right side of fan (7) is equipped with go-between (6), go-between (6) cup joint on air pipe (40), the upper end threaded connection of go-between (6) has second travel switch (5), second travel switch (5) and first cylinder (12) electric connection, and touching head (9) of second travel switch (5) towards the right-hand member.

5. A grinding apparatus as defined in claim 1, wherein: the grinding mechanism comprises an upper grinding wheel (16), a lower grinding wheel (32), a supporting block (28), a first motor (35), a second motor (19) and a second air cylinder (58), a second inner cavity (42) is arranged below the first inner cavity (10), the first inner cavity (10) is communicated with the second inner cavity (42), the upper grinding wheel (16) is rotatably matched in the second inner cavity (42) through a bearing, the upper grinding wheel (16) is annular, a through hole is formed in the middle of the upper grinding wheel (16), a toothed ring (33) is arranged on the periphery of the outer surface of the upper grinding wheel (16), the toothed ring (33) is meshed with a right-side conical gear (34), the right side of the conical gear (34) is rotatably connected with the second motor (35) through a second rotating shaft (39), and the second motor (35) is fixedly connected to the inner wall of the shell (1).

6. The grain grinding apparatus as claimed in claim 5, wherein: a lower grinding wheel (32) is arranged below the upper grinding wheel (16), and the axis of the upper grinding wheel (16) is superposed with the axis of the lower grinding wheel (32); the lower surface of the lower grinding wheel (32) is provided with an annular sliding chute (52), and a ball (31) is connected in the annular sliding chute (52) in a sliding manner; a supporting block (28) is arranged below the lower grinding wheel (32), an annular sliding groove (52) is also formed in the upper surface of the supporting block (28), and the lower grinding wheel (32) and the supporting block (28) are in running fit with the annular sliding groove (52) through balls (31); standing groove (60) have been seted up to supporting shoe (28) inside, standing groove (60) bottom fixedly connected with first motor (19), first pivot (29) and lower grinding miller (32) fixed connection of first motor (19), be provided with louvre (30) on supporting shoe (28), louvre (30) equidistance distributes, annular spacing groove (17) have been seted up to the side surface of supporting shoe (28), and the welding has spacing post (18) on the inner wall of second inner chamber (42) that corresponds with annular spacing groove (17) notch, and spacing post (18) set up 2, and just spacing post (18) establish the left and right sides of symmetric distribution grinding miller (32) axle center down, one side fixedly connected with spacing dog (53) that spacing post (18) are close to annular spacing groove (17), spacing dog (53) are the arc.

7. The grain grinding apparatus as set forth in claim 1, wherein: the adjusting structure comprises a second push rod (20), a second air cylinder (58), a base (21), a graduated scale (27) and a supporting column (25), wherein the second push rod (20) is fixedly connected below the supporting block (28), the second air cylinder (58) is fixedly connected to the second push rod (20), the second air cylinder (58) is fixedly connected to the upper surface of the base (21), the supporting column (25) is welded to the side surface of the base (21) in the front, back, left and right directions, and the other end of the supporting column (25) is welded to the inner wall of the second inner cavity (42); base (21) top is located the right side of second cylinder (58) and still fixed connection scale (27), inside second through-hole (54) that scale (27) run through supporting shoe (28) bottom extended to standing groove (60), the below of lower grinding miller (32) is equipped with safety cover (55), safety cover (55) seted up with spacing post (18) and support column (25) complex waist shape hole (57) and third through-hole (56), safety cover (55) cup joint outside regulation structure through waist shape hole (57) and third through-hole (56) and the cooperation of spacing post (18), support column (25).

8. The grain grinding apparatus as set forth in claim 1, wherein: retrieve mechanism including material collecting cavity (26), material collecting box (22), handle (24), gyro wheel (23), material collecting box (22) are equipped with to material collecting cavity (26) inside, material collecting box's (22) bottom is equipped with gyro wheel (23), the right side of material collecting box (22) is equipped with handle (24).