Auger conveyor for conveying agricultural products

Abstract

The invention belongs to the technical field of agricultural product intelligent conveying equipment, and particularly relates to an agricultural product conveying auger conveyor which comprises a conveying pipe, a plurality of paddle units and a correcting mechanism, the conveying pipe comprises a feeding port, a discharging port, a cavity, a driving motor and a driving shaft, the driving shaft is rotationally arranged on the conveying pipe, the driving motor is connected with the driving shaft, and the paddle units are arranged in the cavity. The multiple paddle units are arranged on the driving shaft side by side in a sliding mode, the flexible outer paddle is provided with propeller blades, a middle hole and a rectangular hole, the flexible outer paddle is arranged on the outer walls of the paddle units, the rectangular hole is formed in the propeller blades, the pushing assembly is arranged in the middle hole of the flexible outer paddle, and the correcting mechanism is installed in the conveying pipe. Through the elastic buffering design of the flexible outer paddle and the spring and in combination with a sliding sleeve dynamic separation mechanism driven by the linear motor, impact can be absorbed in the conveying process, the local space can be actively expanded, and the breakage rate of oil crop seeds caused by extrusion and friction is remarkably reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of intelligent conveying equipment for agricultural products, and particularly relates to a screw conveyor for conveying agricultural products. Background Art

[0002] As a common continuous conveying equipment, the screw conveyor is widely used in the field of agricultural product processing, especially suitable for the horizontal or inclined conveying of granular materials such as grains and oil crop seeds. Traditional screw conveyors usually consist of a spiral blade, a drive shaft and a conveying pipe, and rely on the rotation of the spiral blade to push the material to move axially. However, when conveying oil crop seeds such as rapeseed and sesame, due to the characteristics of such materials being small in particle size, fragile in epidermis and easy to break, the extrusion effect between the traditional rigid spiral blade and the conveying pipe wall is extremely likely to cause damage to the seed epidermis or even rupture of the internal structure, resulting in a decline in the quality of the material. And due to uneven frictional resistance or humidity changes, it is easy to adhere and accumulate, which in turn leads to the problem of conveying pipe blockage.

[0003] Therefore, it is very necessary to study a screw conveyor for conveying agricultural products that can effectively prevent seed breakage caused by mechanical extrusion when conveying oil crop seeds, and can overcome the phenomenon of conveying pipe blockage caused by material adhesion and fluidity fluctuation, so as to improve the conveying efficiency and the ability to guarantee the quality of the material. Summary of the Invention

[0004] In view of the above deficiencies existing in the prior art, the present invention provides a screw conveyor for conveying agricultural products to solve the problems of easy seed breakage and adhesion and accumulation in the prior art when conveying oil crop seeds.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A screw conveyor for conveying agricultural products, comprising: a conveying pipe, a plurality of paddle units and a correction mechanism;

[0007] The conveying pipe includes a feed inlet, a discharge outlet, a cavity, a drive motor, a drive shaft and a spring. The feed inlet and the discharge outlet are arranged at both ends of the conveying pipe. The cavity is arranged at one end of the conveying pipe close to the feed inlet. The drive shaft is rotatably arranged on the conveying pipe. The drive motor is connected to the drive shaft. The spring is sleeved on the drive shaft. The paddle unit is connected to the conveying pipe through the spring;

[0008] The plurality of paddle units are arranged side by side and slidably on the drive shaft. The paddle unit includes a flexible outer paddle and a pushing component;

[0009] The flexible outer paddle is provided with spiral blades, a middle hole and a rectangular hole. The flexible outer paddle is arranged on the outer wall of the paddle unit. The rectangular hole is arranged in the spiral blade. The rectangular hole communicates with the middle hole;

[0010] The driving assembly includes a fixed sleeve, a sliding sleeve, a linear motor, a travel switch and a lever. The fixed sleeve is fixedly arranged on the inner wall of the middle hole. The sliding sleeve is slidably arranged in the middle hole. The fixed sleeve and the sliding sleeve are connected by the linear motor. The travel switch is fixedly installed on the fixed sleeve. The lever is fixedly arranged in the rectangular hole. The lever cooperates with the travel switch. The travel switch is electrically connected to the linear motor;

[0011] The correction mechanism is installed in the conveying pipe and cooperates with the blade unit.

[0012] Further, an axial chute is provided on the outer wall of the drive shaft.

[0013] Furthermore, a guide rod, a first slider and a travel switch bracket are provided on the fixed sleeve. The guide rod and the travel switch bracket are fixedly arranged on the end face close to the sliding sleeve. The first slider is slidably matched with the chute. The travel switch is fixedly arranged on the travel switch bracket.

[0014] Still further, first electrode plates are fixedly arranged on two side walls of the chute. Second electrode plates are fixedly arranged on two side walls of the first slider. The first electrode plates cooperate with the second electrode plates. The second electrode plates are electrically connected to the linear motor.

[0015] Still further, the sliding sleeve includes a guide hole and a second slider. The guide hole is arranged on the end face of the sliding sleeve close to the fixed sleeve. The guide rod is slidably arranged in the guide hole. The second slider is slidably arranged in the chute.

[0016] Further, an annular groove is provided on the end face of the fixed sleeve away from the sliding sleeve. An annular protrusion is provided on the end face of the sliding sleeve away from the fixed sleeve. The annular protrusion cooperates with the annular groove of the adjacent blade unit.

[0017] Further, the correction mechanism includes a lead screw, a smooth rod, a second driving motor and a correction plate. The smooth rod is fixedly arranged on the conveying pipe. The lead screw is rotatably arranged on the conveying pipe. The second driving motor is connected to the lead screw. The correction plate is slidably arranged on the smooth rod. The correction plate cooperates with the lead screw.

[0018] Furthermore, an arc-shaped groove is provided on the end face of the correction plate close to the blade unit. The arc-shaped groove is slidably matched with the blade unit.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. A screw conveyor for transporting agricultural products disclosed by the present invention can, through the elastic buffer design of the flexible outer paddle and the spring, combined with the dynamic separation mechanism of the sliding sleeve driven by the linear motor, absorb mechanical shocks in real time during the transportation process and actively expand the local space, significantly reducing the breakage rate of oil crop seeds caused by extrusion and friction. Especially for highly sensitive materials, the deformation adaptive characteristics of the flexible outer paddle can avoid skin damage caused by rigid contact. At the same time, the rapid separation and reset functions of the propeller blades after blockage trigger not only ensure the dredging efficiency but also avoid the production line interruption problem caused by traditional shutdown maintenance.

[0021] 2. A screw conveyor for transporting agricultural products disclosed by the present invention can periodically correct the position deviation of the paddle unit caused by material friction or vibration through the correction mechanism, ensuring the coaxiality and transportation stability of the propeller blade group and further reducing the blockage risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the present invention Figure 1 ;

[0023] Figure 2 is a schematic structural diagram of the present invention Figure 2 ;

[0024] Figure 3 is a schematic structural diagram of the present invention Figure 1 ;

[0025] Figure 4 is a schematic structural diagram of the present invention Figure 2 ;

[0026] Figure 5 is Figure 4 a sectional view taken along line A-A in

[0027] Figure 6 a schematic structural diagram of the drive shaft;

[0028] Figure 7 a schematic structural diagram of the fixed sleeve;

[0029] Figure 8 a schematic structural diagram of the sliding sleeve Figure 1 ;

[0030] Figure 9 a schematic structural diagram of the sliding sleeve Figure 2 ;

[0031] Figure 10 a schematic structural diagram of the correction plate.

[0032] The reference numerals involved in the drawings are:

[0033] 1. Delivery pipe; 11. Feed inlet; 12. Discharge outlet; 13. Cavity; 14. Driving motor; 15. Driving shaft; 151. Chute; 152. First electrode plate; 16. Spring; 2. Paddle unit; 21. Flexible outer paddle; 211. Propeller blade; 212. Middle hole; 213. Rectangular hole; 22. Fixed sleeve; 222. Guide rod; 223. First slider; 224. Second electrode plate; 225. Travel switch bracket; 226. Annular groove; 23. Sliding sleeve; 231. Guide hole; 232. Annular protrusion; 233. Second slider; 24. Linear motor; 25. Travel switch; 26. Lever; 3. Calibration mechanism; 31. Lead screw; 32. Smooth rod; 33. Second driving motor; 34. Calibration plate; 341. Arc-shaped groove. Detailed implementation mode

[0034] In order to enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be further described below in conjunction with the drawings and embodiments.

[0035] In the description of the present application, it should be noted that for orientation terms, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and position relationships indicated are based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present application.

[0036] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence.

[0037] Please refer to Figures 1 to 10 As shown in the figure, a screw conveyor for agricultural product transportation includes: a delivery pipe 1 for transporting agricultural products, a plurality of paddle units 2 for driving agricultural products to move in the delivery pipe 1, and a calibration mechanism 3 for periodically calibrating the paddle units 2.

[0038] The conveying pipe 1 includes a feed inlet 11, a discharge outlet 12, a cavity 13, a driving motor 14, a driving shaft 15, and a spring 16. The feed inlet 11 and the discharge outlet 12 are provided at both ends of the conveying pipe 1, and the cavity 13 is provided at one end of the conveying pipe 1 close to the feed inlet 11. The driving shaft 15 is rotatably arranged on the conveying pipe 1, and the driving motor 14 is connected to the driving shaft 15, that is, the driving motor 14 can drive the driving shaft 15 and the blade unit 2 arranged on the driving shaft 15 to rotate in the conveying pipe 1. Specifically, an axial chute 151 is provided on the outer wall of the driving shaft 15.

[0039] The spring 16 is sleeved on the driving shaft 15, and the blade unit 2 is connected to the conveying pipe 1 through the spring 16. It should be noted that the spring 16 can make the sliding sleeve 23 of the adjacent blade units 2 and the fixed sleeve 22 be in extrusion fit.

[0040] The plurality of blade units 2 are arranged side by side and slidably on the driving shaft 15, and the blade unit 2 includes a flexible outer blade 21 and a pushing component.

[0041] The flexible outer blade 21 is provided with a propeller blade 211, a middle hole 212, and a rectangular hole 213. The flexible outer blade 21 is arranged on the outer wall of the blade unit 2. It should be noted that the propeller blade 211 on the flexible outer blade 21 can drive agricultural products to move in the conveying pipe 1 when rotating alone; at the same time, the propeller blades 211 of two or more blade units 2 can also cooperate to form a propeller blade group to drive agricultural products to move along the conveying pipe 1 from the feed inlet 11 to the discharge outlet 12. The rectangular hole 213 is arranged in the propeller blade 211, and the rectangular hole 213 communicates with the middle hole 212.

[0042] The pushing component includes a fixed sleeve 22, a sliding sleeve 23, a linear motor 24, a travel switch 25, and a lever 26.

[0043] The fixed sleeve 22 is fixedly arranged on the inner wall of the middle hole 212. Specifically, the fixed sleeve 22 is provided with a guide rod 222, a first slider 223, and a travel switch bracket 225. The guide rod 222 and the travel switch bracket 225 are fixedly arranged on the end face close to the sliding sleeve 23, the first slider 223 is slidably matched with the chute 151, and the travel switch 25 is fixedly arranged on the travel switch bracket 225.

[0044] The sliding sleeve 23 is slidably arranged in the middle hole 212. Specifically, the sliding sleeve 23 includes a guiding hole 231 and a second sliding block 233. The guiding hole 231 is arranged on the end face of the sliding sleeve 23 close to the fixed sleeve 22. The guiding rod 222 is slidably arranged in the guiding hole 231. It can be understood that the sliding sleeve 23 can slide in the middle hole 212. With the cooperation of the guiding rod 222 and the guiding hole 231, the sliding sleeve 23 cannot rotate relative to the fixed sleeve 22. The second sliding block 233 is slidably arranged in the sliding groove 151.

[0045] It should be noted that through the sliding cooperation of the first sliding block 223, the second sliding block 233 and the sliding groove 151, the blade unit 2 can slide along the drive shaft 15, and the drive shaft 15 can drive the blade unit 2 to rotate.

[0046] The fixed sleeve 22 and the sliding sleeve 23 are connected by a linear motor 24. It can be understood that when the linear motor 24 extends, it can drive at least part of the sliding sleeve 23 to extend out of the middle hole 212, and when the linear motor 24 contracts, it can drive the sliding sleeve 23 extending out of the middle hole 212 to completely retract into the middle hole 212. The travel switch 25 is fixedly installed on the fixed sleeve 22. The dial rod 26 is fixedly arranged in the rectangular hole 213. The dial rod 26 cooperates with the travel switch 25. It can be understood that when the agricultural products between two adjacent blade units 2 are blocked in the conveying pipe 1, the flexible outer blade 21 will bend to both sides under the action of force, and then drive the dial rod 26 to flip to both sides. When the flipping degree reaches the threshold, the travel switch 25 will be triggered. The travel switch 25 is electrically connected to the linear motor 24, that is, when the travel switch 25 is triggered, the linear motor 24 extends, drives the sliding sleeve 23 to slide outwards, and pushes the adjacent blade unit 2 to slide along the drive shaft 15, so that the propeller blades 211 of the two blade units 2 are separated, expanding the space of this part and preventing the agricultural products, especially oil crop seeds, from being damaged by force in this part.

[0047] Correspondingly, first electrode plates 152 are fixedly arranged on two side walls of the sliding groove 151, second electrode plates 224 are fixedly arranged on two side walls of the first sliding block 223, the first electrode plates 152 cooperate with the second electrode plates 224, and the second electrode plates 224 are electrically connected to the linear motor 24. It can be understood that the power supply is connected to the first electrode plates 152 through a rotary connector. The first electrode plates 152 cooperate through the second electrode plates 224 to supply power to the linear motor 24 while not affecting the sliding of the blade unit 2 along the drive shaft 15.

[0048] It should be noted that an annular groove 226 is provided on the end face of the fixed sleeve 22 away from the sliding sleeve 23, and an annular protrusion 232 is provided on the end face of the sliding sleeve 23 away from the fixed sleeve 22. The annular protrusion 232 cooperates with the annular groove 226 of the adjacent blade unit 2. It should be noted that the cooperation between the annular protrusion 232 and the annular groove 226 can prevent the adjacent blade units 2 from shifting during operation, especially during the separation process of the flexible outer blade 21 of the adjacent blade unit 2 driven by the linear motor 24 through the sliding sleeve 23, thereby preventing equipment damage.

[0049] The correction mechanism 3 is installed in the conveying pipe 1 and cooperates with the blade unit 2. Specifically, the correction mechanism 3 includes a lead screw 31, a smooth rod 32, a second driving motor 33, and a correction plate 34. The smooth rod 32 is fixedly arranged on the conveying pipe 1, the lead screw 31 is rotatably arranged on the conveying pipe 1, the second driving motor 33 is connected to the lead screw 31, the correction plate 34 is slidably arranged on the smooth rod 32, and the correction plate 34 cooperates with the lead screw 31, that is, the second driving motor 33 can drive the correction plate 34 to reciprocate along the smooth rod 32 through the lead screw 31. Specifically, an arc-shaped groove 341 is provided on the end face of the correction plate 34 close to the blade unit 2, and the arc-shaped groove 341 is slidably matched with the blade unit 2. When the correction plate 34 slides along the smooth rod 32, the arc-shaped groove 341 is slidably matched with the propeller blade 211, thereby correcting the position of the propeller blade 211 and preventing the blade unit 2 from malfunctioning due to material blockage, wear, etc.

[0050] It should be noted that when the correction mechanism 3 is not working, the correction plate 34 is located in the cavity 13, and the correction plate 34 does not affect the normal operation of the equipment.

[0051] The working principle of the present invention is as follows:

[0052] During operation, agricultural products are fed into the conveying pipe 1 through the feed inlet 11 manually or by a conveying device. The driving motor 14 drives a plurality of blade units 2 to rotate synchronously through the driving shaft 15. The propeller blades 211 of the plurality of blade units 2 cooperate to form a propeller blade group, and the rotation of the propeller blade group drives the agricultural products to move along the conveying pipe 1 from the feed inlet 11 to the discharge outlet 12.

[0053] The flexible outer blade 21 is made of an elastic material and absorbs mechanical stress through deformation during transportation to avoid damage to oil crop seeds caused by rigid extrusion.

[0054] When a local blockage occurs in the conveying pipe 1, the lateral force generated by the accumulation of materials forces the flexible outer paddle 21 to bend to both sides, driving the lever 26 fixed thereon to deflect. When the deflection angle of the lever 26 reaches the preset threshold, the travel switch 25 on the fixed sleeve 22 is triggered, and then the linear motor 24 starts to extend, driving the sliding sleeve 23 to slide outward along the middle hole 212. The extension action of the sliding sleeve 23 pushes the adjacent paddle units 2 to axially separate along the drive shaft 15, forming an expanded space between the propeller blades 211, releasing the local pressure and dredging the blockage, effectively preventing the seeds from being damaged due to excessive extrusion.

[0055] After the blockage is removed, the propeller blades 211 reset under the action of the elastic restoring force of the spring 16 and the flexible outer paddle 21. The lever 26 disengages from the travel switch 25, and the linear motor 24 contracts to retract the sliding sleeve 23 into the middle hole 212, and the propeller blade group resumes the continuous pushing state.

[0056] The calibration mechanism 3 periodically drives the lead screw 31 to rotate through the second drive motor 33, driving the calibration plate 34 to reciprocate along the optical bar 32. The arc-shaped groove 341 of the calibration plate 34 is in sliding contact with the outer edge of the propeller blade 211, and the position deviation of the paddle unit 2 caused by material friction or vibration is corrected in real time, ensuring the coaxiality and conveying stability of the propeller blade group, and further reducing the risk of blockage.

[0057] The above are only the embodiments of the present invention. The specific structures and characteristics and other common knowledge well known in the art are not described in detail here. Those of ordinary skill in the art know all the common technical knowledge in the technical field to which the invention belongs before the application date or the priority date, can know all the prior arts in this field, and have the ability to apply the conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given by this application, combine their own abilities to improve and implement this solution. Some typical well-known structures or well-known methods should not become an obstacle for those of ordinary skill in the art to implement this application. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent.

Claims

1. An auger conveyor for conveying agricultural products, characterized in that: include: A delivery pipe (1), a plurality of blade units (2) and a correction mechanism (3); The conveying pipe (1) comprises a feed port (11), a discharge port (12), a cavity (13), a driving motor (14), a driving shaft (15) and a spring (16); the feed port (11) and the discharge port (12) are arranged at two ends of the conveying pipe (1); the cavity (13) is arranged at one end of the conveying pipe (1) close to the feed port (11); the driving shaft (15) is rotatably arranged on the conveying pipe (1); the driving motor (14) is connected to the driving shaft (15); the spring (16) is sleeved on the driving shaft (15); and the paddle unit (2) is connected to the conveying pipe (1) via the spring (16); The plurality of paddle units (2) are slidably arranged side by side on a driving shaft (15), and the paddle units (2) include a flexible outer paddle (21) and a propulsion assembly; The flexible outer paddle (21) is provided with a propeller blade (211), a middle hole (212) and a rectangular hole (213); the flexible outer paddle (21) is arranged on the outer wall of the paddle unit (2); the rectangular hole (213) is arranged in the propeller blade (211); and the rectangular hole (213) is communicated with the middle hole (212); The pushing assembly comprises a fixed sleeve (22), a sliding sleeve (23), a linear motor (24), a travel switch (25) and a lever (26); the fixed sleeve (22) is fixedly arranged on the inner wall of the middle hole (212); the sliding sleeve (23) is slidably arranged in the middle hole (212); the fixed sleeve (22) and the sliding sleeve (23) are connected via the linear motor (24); the travel switch (25) is fixedly mounted on the fixed sleeve (22); the lever (26) is fixedly arranged in the rectangular hole (213); the lever (26) cooperates with the travel switch (25); and the travel switch (25) is electrically connected to the linear motor (24); The correction mechanism (3) is installed in the delivery pipe (1), and the correction mechanism (3) cooperates with the blade unit (2).

2. The auger conveyor for conveying agricultural products according to claim 1, characterized in that: An axial sliding groove (151) is provided on the outer wall of the driving shaft (15).

3. The auger conveyor for conveying agricultural products according to claim 2, characterized in that: The fixed sleeve (22) is provided with a guide rod (222), a first slider (223) and a travel switch bracket (225); the guide rod (222) and the travel switch bracket (225) are fixedly arranged on an end surface close to one side of the sliding sleeve (23); the first slider (223) is slidably matched with the sliding groove (151); and the travel switch (25) is fixedly arranged on the travel switch bracket (225).

4. The auger conveyor for conveying agricultural products according to claim 3, characterized in that: A first electrode sheet (152) is fixedly arranged on the two side walls of the slide groove (151), a second electrode sheet (224) is fixedly arranged on the two side walls of the first sliding block (223), the first electrode sheet (152) cooperates with the second electrode sheet (224), and the second electrode sheet (224) is electrically connected to the linear motor (24).

5. The auger conveyor for conveying agricultural products according to claim 3, characterized in that: The sliding sleeve (23) comprises a guide hole (231) and a second sliding block (233); the guide hole (231) is arranged on an end surface of the sliding sleeve (23) close to the fixed sleeve (22); the guide rod (222) is slidably arranged in the guide hole (231); and the second sliding block (233) is slidably arranged in the sliding groove (151).

6. The auger conveyor for conveying agricultural products according to claim 1, characterized in that: An annular groove (226) is provided on the end surface of the fixed sleeve (22) away from the sliding sleeve (23), and an annular protrusion (232) is provided on the end surface of the sliding sleeve (23) away from the fixed sleeve (22), and the annular protrusion (232) cooperates with the annular groove (226) of the adjacent blade unit (2).

7. The auger conveyor for conveying agricultural products according to claim 1, characterized in that: The correction mechanism (3) comprises a lead screw (31), a light rod (32), a second drive motor (33) and a correction plate (34); the light rod (32) is fixedly arranged on the conveying tube (1); the lead screw (31) is rotatably arranged on the conveying tube (1); the second drive motor (33) is connected to the lead screw (31); the correction plate (34) is slidably arranged on the light rod (32); and the correction plate (34) cooperates with the lead screw (31).

8. The auger conveyor for conveying agricultural products according to claim 7, characterized in that: An arc-shaped groove (341) is provided on the end surface of the correction plate (34) on the side close to the blade unit (2), and the arc-shaped groove (341) is slidably matched with the blade unit (2).

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