Elevator for grain processing

Abstract

The invention belongs to the field of grain conveying, and discloses a grain processing elevator which comprises a conveying cylinder and a feeding bin and further comprises a pretreatment assembly arranged in the feeding bin and used for scattering grain cakes and guaranteeing uniform feeding; and the screening bin is fixedly arranged at the bottom of the feeding bin, a pneumatic transmission screening assembly is arranged in the screening bin, and the screening bin is in transmission connection with the smashing and stirring pretreatment assembly and used for achieving grain vibration screening. The integrated design of three functions of grain pounding, screening and lifting conveying is achieved, other equipment does not need to be additionally arranged, the grain processing flow is greatly simplified, the grain transferring link is reduced, the processing efficiency is improved, and meanwhile the equipment purchase cost and the site occupied space are saved.

Description

Technical Field

[0001] This invention relates to the field of grain conveying technology, and in particular to a hoist for grain processing. Background Technology

[0002] In small and medium-sized grain processing scenarios, elevators are the core equipment for grain conveying and pre-processing, and their performance directly affects processing efficiency and grain quality.

[0003] Currently, grain elevators on the market only have conveying functions. Grain caking and impurity screening require additional specialized equipment, which not only increases equipment purchase costs and floor space, but also makes the grain processing process cumbersome, requiring multiple transfers and reducing overall processing efficiency. Although some integrated elevators take into account mixing, screening and conveying functions, they require separate power sources for each functional module, resulting in high energy consumption. Furthermore, the coordinated control of multiple power sources is difficult and the equipment failure rate is high.

[0004] Therefore, there is an urgent need for a grain processing elevator that is compact, energy-efficient, highly integrated, and stable in operation. Summary of the Invention

[0005] The present invention provides a grain processing elevator that achieves simultaneous linkage of three major functions: mixing, screening and conveying through a single power source, without the need for additional power equipment, and has a compact structure and low energy consumption.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a grain processing elevator, comprising: a conveying cylinder and a feeding bin, further comprising: a pretreatment component disposed inside the feeding bin for breaking up grain clumps and ensuring uniform feeding; a screening bin fixedly disposed at the bottom of the feeding bin, wherein a pneumatically driven screening component is disposed inside the screening bin and is connected to the mixing pretreatment component for vibrating screening of grain; a spiral conveying component disposed inside the conveying cylinder and drivenly cooperating with the mixing pretreatment component for lifting and conveying the screened grain along an inclined direction; and a bottom box fixedly disposed at one end of the conveying cylinder.

[0007] As a further improvement of the present invention: the pretreatment component includes a geared motor, a rotating rod, multiple tamping rods, and multiple arc-shaped stirring teeth; the geared motor is installed on the top of the bottom box, and its output shaft passes through the side wall of the feeding hopper and is connected to the rotating rod for transmission; the multiple tamping rods are uniformly fixed on the outer surface of the rotating rod along its length direction; the multiple arc-shaped stirring teeth are fixedly arranged one-to-one at the ends of the multiple tamping rods away from the rotating rod, and are all located inside the feeding hopper; the tamping rods rotate to disperse and tamp the grain in the feeding hopper, breaking up the clumps formed by moisture or gravity; the arc-shaped structure of the arc-shaped stirring teeth can increase the contact area with the grain, enhance the breaking effect on the clumps of grain, and prevent the grain from accumulating locally in the feeding hopper.

[0008] As a further improvement of the present invention: the spiral conveying assembly includes a first pulley, a belt, a second pulley, a blade shaft, and spiral blades; the first pulley is fixedly sleeved on the outer surface of the rotating rod near the bottom box, the end of the blade shaft passes through one side of the bottom box, the second pulley is fixedly sleeved on the outer surface of the blade shaft near the end, the first pulley and the second pulley form a transmission connection through the belt, and the spiral blades are spirally wound and fixedly disposed on the outer surface of the blade shaft, and the whole assembly is located inside the conveying cylinder.

[0009] As a further improvement of the present invention: the pneumatic transmission screening assembly includes a cam, a connecting rod, a pressure plate, and a hollow cylinder; the cam is fixedly disposed at the end of the rotating rod away from the reduction motor, the pressure plate is sealed and fitted into the inner wall of the hollow cylinder, one end of the connecting rod is hinged to the cam, and the other end is connected to one end of the pressure plate, the bottom of the hollow cylinder is fixedly disposed on the outer surface of the conveying cylinder, when the rotating rod drives the cam to rotate, the eccentric structure of the cam pulls the pressure plate to perform reciprocating linear motion inside the hollow cylinder through the connecting rod, and the pressure plate and the inner wall of the hollow cylinder are sealed by a sealing ring.

[0010] As a further improvement of the present invention: the pneumatic transmission screening assembly further includes a guide pipe, a connecting pipe, a cylinder, a piston plate, a return spring, a transmission rod, and a screening plate; the hollow cylinder is connected to the connecting pipe through the guide pipe, the connecting pipe is connected to the cylinder, the piston plate is sealed and embedded inside the cylinder and can slide along its inner wall, the return spring is located inside the cylinder, one end of the transmission rod is fixedly connected to the piston plate, and the other end is fixedly connected to the screening plate, the screening plate is movably embedded in the inner wall of the screening chamber, the compressed gas in the cylinder acts upward on the piston plate, pushing the piston plate to slide upward along the inner wall of the cylinder, when the piston plate moves upward, it compresses the return spring inside the cylinder, and at the same time drives the screening plate to lift upward through the transmission rod at the top of the piston plate, when the cam rotates to the non-eccentric end, the pressure plate resets in the hollow cylinder, the air pressure in the cylinder decreases, the elastic restoring force of the return spring pushes the piston plate, transmission rod and screening plate downward, and then the screening plate reciprocates up and down inside the screening chamber.

[0011] As a further improvement of the present invention: in the pneumatic transmission screening assembly, there are four cylinders, two connecting pipes, and two guide pipes; the two ends of each connecting pipe are respectively connected to two cylinders, and the two guide pipes are respectively connected to the two connecting pipes, so as to realize the synchronous distribution of compressed gas to the four cylinders. The compressed gas in the hollow cylinder is transported to the two connecting pipes through the two guide pipes, and then synchronously introduced into the four cylinders through the branches at both ends of the two connecting pipes.

[0012] As a further improvement of the present invention: one end of the reset spring abuts against the inner wall of the top of the cylinder, and the other end is fixedly connected to the upper surface of the piston plate. It is used to drive the piston plate to reset when the air pressure decreases, thereby driving the screening plate to reciprocate. The screening plate reciprocates up and down inside the screening chamber, thereby improving the screening efficiency.

[0013] As a further improvement of the present invention: a discharge bin is fixedly provided on the outer surface of the end of the conveying cylinder away from the bottom box, and a rectangular cleaning port is provided on one side of the screening bin. A baffle is embedded in the inner wall of the rectangular cleaning port. After the operation is completed, the baffle on the side of the screening bin can be opened, and the impurities on the screening plate can be cleaned through the rectangular cleaning port.

[0014] As a further improvement of the present invention: a triangular bracket is fixedly installed on the outer surface of the conveying cylinder away from the bottom box, which cooperates with the bottom box to make the conveying cylinder tilt at a preset angle. Two universal wheels are installed at the bottom of both the bottom box and the triangular bracket. The elevator forms a staggered support structure with the bottom box through the triangular bracket. The triangular bracket is fixed below the discharge end of the conveying cylinder. The bottom box is installed at the bottom of the feeding bin and the screening bin. The two cooperate to make the conveying cylinder tilt at a preset angle, providing guidance for the grain to be conveyed from the low side to the high side. The universal wheels can realize the overall movement of the device, and lock after moving to the target position to ensure the stability of operation.

[0015] As a further improvement of the present invention: the end of the blade shaft away from the second pulley is rotatably connected to the inner wall of the conveying cylinder away from the bottom box via a rolling bearing, and the rotating rod is rotatably connected to the side wall of the feed hopper via a sealed bearing.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. This invention integrates the three functions of grain mixing, screening, and lifting and conveying through a pretreatment component, a pneumatic transmission screening component, and a screw conveyor component. It eliminates the need for additional equipment, greatly simplifies the grain processing process, reduces grain transfer links, improves processing efficiency, and saves on equipment purchase costs and site space.

[0017] 2. This invention uses a single geared motor as the core power source to synchronously drive the three major functional components, avoiding redundant design of multiple power sources, significantly reducing equipment energy consumption and operating failure rate, and simplifying the control logic of the equipment, making it easier for operators to use.

[0018] 3. The present invention uses pneumatic transmission for screening. The reciprocating vibration of the screening plate is achieved through the cooperation of structures such as cam, connecting rod, hollow cylinder, and cylinder. Power is transmitted through gas buffer, without rigid impact. Compared with the rigid transmission of traditional motor direct drive, there is less wear between components, more stable operation, and lower noise. Moreover, the vibration amplitude is not affected by changes in grain load, and the screening accuracy is more stable. At the same time, the wear of the pneumatic transmission structure is less, which extends the service life of the equipment. Attached Figure Description

[0019] Figure 1 This invention provides a schematic diagram of the overall three-dimensional structure of a grain processing elevator.

[0020] Figure 2 This invention provides a side-view three-dimensional structural diagram of a grain processing elevator.

[0021] Figure 3 This invention provides a cross-sectional three-dimensional structural diagram of the conveying cylinder and bottom box in a grain processing elevator.

[0022] Figure 4 This invention provides a cross-sectional three-dimensional structural diagram of the feed hopper in a grain processing elevator.

[0023] Figure 5 This invention provides a three-dimensional structural diagram of a grain processing elevator.

[0024] Figure 6 This invention provides a cross-sectional three-dimensional structural diagram of the screening bin in a grain processing elevator.

[0025] Figure 7 This invention provides a cross-sectional three-dimensional structural diagram of the cylinder in a grain processing elevator.

[0026] Figure 8 This invention provides a cross-sectional three-dimensional structural diagram of the hollow cylinder in a grain processing elevator.

[0027] Legend: 1. Conveying cylinder; 2. Feed hopper; 201. Rotating rod; 202. Tamping rod; 203. Arc-shaped stirring teeth; 204. Bottom box; 205. Gear motor; 206. First pulley; 207. Belt; 208. Second pulley; 209. Blade shaft; 210. Spiral blade; 211. Triangular bracket; 212. Discharge hopper; 213. Caster wheel; 3. Screening hopper; 301. Cylinder; 302. Piston plate; 303. Transmission rod; 304. Return spring; 305. Screening plate; 306. Connecting pipe; 307. Hollow cylinder; 308. Pressure plate; 309. Cam; 310. Connecting rod; 311. Baffle; 312. Guide pipe. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figures 1 to 8 As shown, the present invention provides a grain processing elevator, which includes: a conveying cylinder 1 and a feeding bin 2, and further includes: a pretreatment component disposed inside the feeding bin 2 for breaking up grain clumps and ensuring uniform feeding; a screening bin 3 fixedly disposed at the bottom of the feeding bin 2, the screening bin 3 having a pneumatically driven screening component inside, which is connected to the mixing pretreatment component for vibrating screening of grain; a screw conveying component disposed inside the conveying cylinder 1, which is driven to cooperate with the mixing pretreatment component for lifting and conveying the screened grain along an inclined direction; and a bottom box 204 fixedly disposed at one end of the conveying cylinder 1. In use, the pretreatment component mixes and pretreats the grain in the feeding bin 2, the screw conveying component causes the grain in the conveying cylinder 1 to be conveyed by a screw, and the pneumatically driven screening component causes the grain in the screening bin 3 to be vibrated and screened.

[0030] Please see Figures 1 to 8In one embodiment, the pretreatment assembly includes a geared motor 205, a rotating rod 201, multiple tamping rods 202, and multiple arc-shaped stirring teeth 203. The geared motor 205 is mounted on the top of the base box 204, and its output shaft passes through the side wall of the feed hopper 2 and is connected to the rotating rod 201. The multiple tamping rods 202 are uniformly fixed on the outer surface of the rotating rod 201 along its length. The multiple arc-shaped stirring teeth 203 are fixedly arranged one-to-one at the ends of the multiple tamping rods 202 away from the rotating rod 201, and are all located inside the feed hopper 2. The geared motor 205... The output shaft of 05 and the rotating rod 201 are coaxially driven by a coupling. The tamping rod 202 and the rotating rod 201 are fixed by welding and reinforced with ribs. The arc-shaped stirring teeth 203 are integrally formed of wear-resistant stainless steel. When the rotating rod 201 rotates, the multiple tamping rods 202 fixed on its outer surface rotate together. The arc-shaped stirring teeth 203 connected to one end of each tamping rod 202 make circular motion synchronously. The arc-shaped concave surface of the arc-shaped stirring teeth 203 faces the direction of rotation, which can guide the grain to flow into the screening bin 3 and avoid accumulation and blockage in the feed bin 2.

[0031] Please see Figures 1 to 8 In one embodiment, the spiral conveying assembly includes a first pulley 206, a belt 207, a second pulley 208, a blade shaft 209, and a spiral blade 210. The first pulley 206 is fixedly sleeved on the outer surface of the rotating rod 201 near the bottom box 204. The end of the blade shaft 209 extends through one side of the bottom box 204. The second pulley 208 is fixedly sleeved on the outer surface of the blade shaft 209 near the end. The first pulley 206 and the second pulley 208 are connected by the belt 207 to form a transmission engagement. The spiral blade 210 is spirally wound and fixedly disposed on the outer surface of the blade shaft 209, and is located inside the conveying cylinder 1. The first pulley 206 and the second pulley 208 are both fixed to the corresponding shafts by key connections. The belt 207 is a rubber synchronous belt. The spiral blade 210 is fixed to the blade shaft 209 by welding, and the gap between the blade edge and the inner wall of the conveying cylinder 1 is controlled at 5-8 mm.

[0032] Please see Figures 1 to 8In one embodiment, the pneumatically driven screening assembly includes a cam 309, a connecting rod 310, a pressure plate 308, and a hollow cylinder 307. The cam 309 is fixedly disposed at the end of the rotating rod 201 away from the reduction motor 205. The pressure plate 308 is sealed and fitted into the inner wall of the hollow cylinder 307. One end of the connecting rod 310 is hinged to the cam 309, and the other end is connected to one end of the pressure plate 308. The bottom of the hollow cylinder 307 is fixedly disposed on the outer surface of the conveying cylinder 1. The pneumatically driven screening assembly also includes a guide pipe 312 and a connecting pipe 306. The components include a cylinder 301, a piston plate 302, a return spring 304, a transmission rod 303, and a screening plate 305. A hollow cylinder 307 is connected to a connecting pipe 306 via a guide pipe 312. The connecting pipe 306 is connected to the cylinder 301. The piston plate 302 is sealed and embedded inside the cylinder 301 and can slide along its inner wall. The return spring 304 is located inside the cylinder 301. One end of the transmission rod 303 is fixedly connected to the piston plate 302, and the other end is fixedly connected to the screening plate 305. The screening plate 305 is movably embedded in the inner wall of the screening chamber 3. In the pneumatic transmission screening assembly, there are four cylinders 301, two connecting pipes 306, and two guide pipes 312. Each connecting pipe 306 is connected to two corresponding cylinders 301 at both ends, and the two guide pipes 312 are connected to the two connecting pipes 306, achieving synchronous distribution of compressed gas to the four cylinders 301. One end of the return spring 304 abuts against the inner wall of the top of the cylinder 301, and the other end is fixedly connected to the upper surface of the piston plate 302. It is used to drive the piston plate 302 to reset when the air pressure decreases, thereby driving the screening plate 305. When the rotating rod 201 drives the cam 309 to rotate, the eccentric structure of the cam 309 pulls the pressure plate 308 to make reciprocating linear motion inside the hollow cylinder 307 through the connecting rod 310. When the pressure plate 308 moves downward, it compresses the gas inside the hollow cylinder 307. The compressed gas inside the hollow cylinder 307 is delivered to the two connecting pipes 306 through the two guide pipes 312 respectively, and then introduced into the four cylinders 301 through the two branches at both ends of the two connecting pipes 306. As a result, the screening plate 305 makes reciprocating up and down vibration inside the screening chamber 3.

[0033] Please see Figures 1 to 8 In one embodiment, a discharge bin 212 is fixedly installed on the outer surface of the end of the conveying cylinder 1 away from the bottom box 204. A rectangular cleaning port is opened on one side of the screening bin 3. A baffle 311 is embedded in the inner wall of the rectangular cleaning port. A rubber sealing gasket is provided between the baffle 311 and the inner wall of the rectangular cleaning port. The baffle 311 is locked and fixed by bolts. The baffle 311 can be disassembled by rotating the bolts.

[0034] Please see Figures 1 to 8In one embodiment, a triangular bracket 211 is fixedly installed on the outer surface of the conveying cylinder 1 away from the base box 204. The triangular bracket 211 cooperates with the base box 204 to make the conveying cylinder 1 tilt at a preset angle. Two universal wheels 213 are installed at the bottom of both the base box 204 and the triangular bracket 211. The multiple universal wheels 213 are equipped with a foot-operated brake pad locking mechanism. The universal wheels 213 at the bottom of the base box 204 and the triangular bracket 211 can realize the overall movement of the device. After moving to the target work position, it can be locked by the foot-operated brake pad to ensure the stability of the operation.

[0035] Please see Figures 1 to 8 In one embodiment, the end of the blade shaft 209 away from the second pulley 208 is rotatably connected to the inner wall of the conveying cylinder 1 away from the bottom box 204 via a rolling bearing, and the rotating rod 201 is rotatably connected to the side wall of the feed bin 2 via a sealed bearing.

[0036] Working principle and usage process of this invention: Working principle: The elevator forms a staggered support structure with the triangular bracket 211 and the bottom box 204. The triangular bracket 211 is fixed below the discharge end of the conveying cylinder 1, and the bottom box 204 is installed at the bottom of the feeding bin 2 and the screening bin 3. The two work together to make the conveying cylinder 1 tilt at a preset angle, providing guidance for the grain to be conveyed from the low side to the high side. The casters 213 at the bottom of the bottom box 204 and the triangular bracket 211 can realize the overall movement of the device. After moving to the target position, they are locked to ensure the stability of operation. When transporting grain, the external power switch of the geared motor 205 is turned on. The output shaft of the geared motor 205 drives the rotating rod 201 to rotate. The rotating rod 201, as the core power transmission component, synchronously drives the three main branch components to operate, as follows: (I) Pre-treatment components: Grain mixing and pre-treatment in feed hopper 2 When the rotating rod 201 rotates, the multiple tamping rods 202 fixed on its outer surface rotate together. The arc-shaped stirring teeth 203 connected to one end of each tamping rod 202 make circular motions in sync. On the one hand, the tamping rods 202 disperse and tamp the grain in the feed bin 2 by rotating, breaking up the clumps formed by moisture or gravity. On the other hand, the arc-shaped structure of the arc-shaped stirring teeth 203 can increase the contact area with the grain, enhance the crushing effect on the clumps. At the same time, the arc-shaped concave surface of the arc-shaped stirring teeth 203 faces the direction of rotation, which can guide the grain to flow into the screening bin 3, avoid the accumulation and blockage in the feed bin 2, and provide uniform and loose raw materials for the subsequent screening process, thus avoiding feed blockage. (II) Screw Conveyor Assembly: Grain screw conveyor inside conveyor cylinder 1 A first pulley 206 is fixedly mounted on the end of the rotating rod 201 near the conveying cylinder 1. The first pulley 206 is connected to the second pulley 208 via a belt 207. When the rotating rod 201 rotates, it drives the first pulley 206 to rotate. The belt 207 transmits power to the second pulley 208, causing the blade shaft 209 mounted in the second pulley 208 to rotate synchronously. The spiral blades 210 fixed on the outer surface of the blade shaft 209 rotate together with the shaft. Using the spiral thrust of the spiral blades 210, the screened grain is pushed up along the inclined inner wall of the conveying cylinder 1 and finally conveyed to the discharge bin 212 at the high end of the conveying cylinder 1, thus completing the lifting and conveying of the grain. It should be noted here that the tilting posture of the conveying cylinder 1 is controlled by the height difference between the triangular bracket 211 and the bottom box 204. The rotational speed of the spiral blade 210 is optimized by the transmission ratio of the reduction motor 205 and the first pulley 206 and the second pulley 208 to ensure that the spiral thrust is greater than the gravity of the grain sliding down the inner wall of the conveying cylinder 1, thereby achieving stable conveying. (III) Pneumatic transmission screening assembly: Grain vibration screening in screening chamber 3 A cam 309 is fixedly mounted on the other end of the rotating rod 201 away from the reduction motor 205. The cam 309 is hinged to the pressure plate 308 via the connecting rod 310. The pressure plate 308 is fitted inside the hollow cylinder 307 and can slide along the cylinder wall. When the rotating rod 201 drives the cam 309 to rotate, the eccentric structure of the cam 309 pulls the pressure plate 308 to reciprocate linearly inside the hollow cylinder 307 via the connecting rod 310. When the pressure plate 308 moves downward, it compresses the gas inside the hollow cylinder 307. The compressed gas inside the hollow cylinder 307 is delivered to two connecting pipes 306 through two guide pipes 312, and then simultaneously introduced into the four cylinders 301 through the branches at both ends of the two connecting pipes 306. The compressed gas inside the cylinders 301 acts upward on the piston plate 302, pushing the piston plate 302 to slide upward along the inner wall of the cylinder 301. When the piston plate 302 moves upward, it compresses the cylinder. The return spring 304 inside 301 simultaneously drives the screening plate 305 upward through the transmission rod 303 at the top of the piston plate 302. When the cam 309 rotates to the non-eccentric end, the pressure plate 308 resets in the hollow cylinder 307, the air pressure in the cylinder 301 decreases, and the elastic restoring force of the return spring 304 pushes the piston plate 302, transmission rod 303 and screening plate 305 downward. As a result, the screening plate 305 vibrates back and forth inside the screening chamber 3. The grain that has been agitated in the feed chamber 2 enters the screening chamber 3 through the connecting port and falls on the vibrating screening plate 305. Grain that meets the particle size requirements passes through the sieve holes of the screening plate 305 and falls into the connecting port between the screening chamber 3 and the conveying cylinder 1. Impurities such as stones and large clumps are intercepted by the screening plate 305. After the operation is completed, the baffle 311 on the side of the screening chamber 3 is opened, and the impurities on the screening plate 305 are cleaned through the rectangular cleaning port.

[0037] Operating Procedure: Pour the grain to be processed into the feeding hopper 2. The grain is temporarily stored in the feeding hopper 2. The geared motor 205 starts and drives the rotating rod 201 to rotate. The tamping rod 202 and the arc-shaped stirring teeth 203 rotate synchronously to break up grain clumps and scrape off residues on the hopper wall. The grain is pushed to the screening hopper 3. The rotating rod 201 drives the cam 309 to rotate synchronously. Through pneumatic transmission, the screening plate 305 vibrates back and forth to complete the separation of grain and impurities. Qualified grain enters the conveying cylinder 1. The rotating rod 201 drives the blade shaft 209 and the spiral blade 210 to rotate through the pulley. The spiral thrust pushes the grain up the inclined conveying cylinder 1 and finally discharges it from the discharge hopper 212, completing the entire mixing, screening and conveying lifting operation.

[0038] In summary, by using a single power source, the three functions of mixing, screening and conveying can be synchronized without the need for additional power equipment. The structure is compact and energy consumption is low. The pneumatic transmission vibration design of the screening chamber (3) is more stable and has lower noise than traditional motor vibration, making it suitable for small and medium-sized grain processing scenarios.

[0039] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A grain processing elevator, comprising: The conveyor cylinder (1) and the feed hopper (2) are characterized in that they further include: The pretreatment component installed inside the feed hopper (2) is used to break up grain clumps and ensure uniform feeding. The screening chamber (3) is fixedly installed at the bottom of the feeding chamber (2). The screening chamber (3) is equipped with a pneumatic transmission screening component, which is connected to the mixing pretreatment component for the purpose of achieving grain vibration screening. The spiral conveying assembly located inside the conveying cylinder (1) is driven in conjunction with the mixing pretreatment assembly to lift and convey the screened grain along the inclined direction. The bottom box (204) is fixedly installed at one end of the conveying cylinder (1).

2. The grain processing elevator according to claim 1, characterized in that: The pretreatment assembly includes a geared motor (205), a rotating rod (201), multiple tamping rods (202), and multiple arc-shaped stirring teeth (203). The geared motor (205) is installed on the top of the bottom box (204). Its output shaft passes through the side wall of the feed bin (2) and is connected to the rotating rod (201) for transmission. Multiple tamping rods (202) are uniformly fixed on the outer surface of the rotating rod (201) along its length direction. Multiple arc-shaped stirring teeth (203) are fixedly installed one by one at the end of the multiple tamping rods (202) away from the rotating rod (201), and are all located inside the feed bin (2).

3. The grain processing elevator according to claim 2, characterized in that: The spiral conveyor assembly includes a first pulley (206), a belt (207), a second pulley (208), a blade shaft (209), and spiral blades (210). The first pulley (206) is fixedly sleeved on the outer surface of the rotating rod (201) near the bottom box (204). The end of the blade shaft (209) passes through one side of the bottom box (204). The second pulley (208) is fixedly sleeved on the outer surface of the blade shaft (209) near the end. The first pulley (206) and the second pulley (208) form a transmission cooperation through the belt (207). The spiral blade (210) is spirally wound and fixedly set on the outer surface of the blade shaft (209), and the whole is located inside the conveying cylinder (1).

4. The grain processing elevator according to claim 2, characterized in that: The pneumatic transmission screening assembly includes a cam (309), a connecting rod (310), a pressure plate (308), and a hollow cylinder (307). The cam (309) is fixedly mounted on the end of the rotating rod (201) away from the geared motor (205). The pressure plate (308) is sealed and fitted into the inner wall of the hollow cylinder (307). One end of the connecting rod (310) is hinged to the cam (309), and the other end is connected to one end of the pressure plate (308). The bottom of the hollow cylinder (307) is fixedly mounted on the outer surface of the conveying cylinder (1).

5. The grain processing elevator according to claim 4, characterized in that: The pneumatic transmission screening assembly also includes a guide pipe (312), a connecting pipe (306), a cylinder (301), a piston plate (302), a return spring (304), a transmission rod (303), and a screening plate (305). The hollow cylinder (307) is connected to the connecting pipe (306) through the guide pipe (312). The connecting pipe (306) is connected to the cylinder (301). The piston plate (302) is sealed and embedded inside the cylinder (301) and can slide along its inner wall. The reset spring (304) is located inside the cylinder (301). One end of the transmission rod (303) is fixedly connected to the piston plate (302), and the other end is fixedly connected to the screening plate (305). The screening plate (305) is movably embedded in the inner wall of the screening chamber (3).

6. The grain processing elevator according to claim 5, characterized in that: In the pneumatic transmission screening assembly, there are four cylinders (301), two connecting pipes (306), and two guide pipes (312); Each connecting pipe (306) is connected to two cylinders (301) at both ends, and two guide pipes (312) are connected to two connecting pipes (306) respectively, so as to realize the synchronous diversion of compressed gas to four cylinders (301).

7. The grain processing elevator according to claim 6, characterized in that: One end of the reset spring (304) abuts against the inner wall of the top of the cylinder (301), and the other end is fixedly connected to the upper surface of the piston plate (302). It is used to drive the piston plate (302) to reset when the air pressure decreases, thereby driving the screening plate (305) to reciprocate.

8. The grain processing elevator according to claim 1, characterized in that: A discharge bin (212) is fixedly installed on the outer surface of the end of the conveying cylinder (1) away from the bottom box (204). A rectangular cleaning port is opened on one side of the screening bin (3), and a baffle (311) is embedded in the inner wall of the rectangular cleaning port.

9. The grain processing elevator according to claim 1, characterized in that: A triangular bracket (211) is fixedly installed on the outer surface of the conveying cylinder (1) away from the bottom box (204), which cooperates with the bottom box (204) to make the conveying cylinder (1) at a preset tilt angle. Two universal wheels (213) are installed at the bottom of the bottom box (204) and the triangular bracket (211).

10. The grain processing elevator according to claim 3, characterized in that: The end of the blade shaft (209) away from the second pulley (208) is rotatably connected to the inner wall of the conveying cylinder (1) away from the bottom box (204) via a rolling bearing, and the rotating rod (201) is rotatably connected to the side wall of the feed bin (2) via a sealed bearing.

Images