Screening device suitable for grading pine nuts

Abstract

The screening device comprises a rectangular screening pool, a longitudinal conveying roller is arranged on the left side of the bottom of the screening pool, the two ends of the conveying roller abut against the two side walls of the screening pool respectively, a center shaft is arranged in the conveying roller, and the two ends of the center shaft are hinged to the screening pool through bearings. A plurality of annularly-distributed protruding strips are formed on the outer cylinder wall of the conveying roller, a blocking roller close to the conveying roller is fixedly inserted into the screening water pool on the upper side of the conveying roller, a right baffle inclining rightwards and facing upwards is formed on the blocking roller, and an inclined flow guide plate is fixedly inserted into the screening water pool on the lower right portion of the conveying roller. The flow guide plate, the conveying roller, the blocking roller and the right baffle divide the screening water pool into a feeding cavity and a discharging cavity. According to the screening device, the weight of the pine nuts is distinguished based on buoyancy of water, and then the pine nuts without kernels can be removed; meanwhile, the pine nuts can be automatically output, labor can be saved, and the production efficiency can be improved.

Description

Technical fields:

[0001] This utility model relates to the technical field of pine nut processing equipment, and more specifically to a screening device suitable for pine nut grading. Background technology:

[0002] Pine nuts, also known as pine nuts, are the seeds of plants such as the Korean pine (Pinus koraiensis). When pine nuts are consumed or cultivated, they need to be sorted using a screening mechanism. Currently, pine nut grading is generally based on kernel size, primarily achieved through vibrating screens with grading mesh. However, this screening structure cannot separate kerneled pine nuts from kernelless ones, leading to quality issues. Therefore, a screening device capable of distinguishing between kerneled and kernelless pine nuts is needed. Furthermore, to save labor, the designed screening device should automatically output the sorted pine nuts, ensuring production efficiency while conserving labor. Utility Model Content:

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a screening device suitable for pine nut grading. This screening device uses the buoyancy of water to distinguish the weight of pine nuts, thereby removing kernelless pine nuts. At the same time, it enables automatic output of pine nuts, which can save labor and improve production efficiency.

[0004] A screening device suitable for pine nut grading includes a rectangular screening pool. A longitudinal conveying roller is provided on the left side of the bottom of the screening pool. The two ends of the conveying roller abut against the two side walls of the screening pool. A central shaft is provided inside the conveying roller. The two ends of the central shaft are hinged to the screening pool by bearings. Several annularly distributed convex strips are formed on the outer wall of the conveying roller. A baffle roller close to the conveying roller is inserted and fixed in the screening pool above the conveying roller. A right baffle plate inclined to the right and upward is formed on the baffle roller. An inclined guide plate is inserted and fixed in the screening pool below the right side of the conveying roller. The guide plate, the conveying roller, the baffle roller and the right baffle plate divide the screening pool into a feed chamber and a discharge chamber.

[0005] Above the feed chamber, there is a longitudinal slag removal component. The slag removal component includes a longitudinal drive shaft. Both ends of the drive shaft are hinged to a "C"-shaped adjustment seat through bearing seats. Transverse guide rails are respectively inserted into the front and rear sides of the adjustment seat, and the guide rails are fixedly connected to the screening water tank. A roller sleeve is fixedly connected to the drive shaft by insertion. Discs are fixedly connected to both ends of the roller sleeve. A number of annularly distributed slag removal plates are inserted and fixed in the discs. The inner side edges of the slag removal plates are fixedly connected to the roller sleeve. A number of filter water grooves are formed on the slag removal plates; a circular arc-shaped left baffle is abutted against the lower left of the slag removal component. An inclined slag removal slide plate is formed by bending the upper end of the left baffle. Connecting side plates are respectively formed on both sides of the slag removal slide plate, and the connecting side plates are fixedly connected to the adjustment seat;

[0006] On the side wall of the screening water tank on the upper right side of the right baffle, a number of longitudinally distributed water inlets are formed. A water inlet pipe connected to the screening water tank is fixedly connected to the outer wall on the right side of the screening water tank; One end of the central shaft is fixedly connected to the rotating shaft of the motor through a coupling, and the other end extends out of the screening water tank and is fixedly connected with a driving belt pulley through insertion. The driving belt pulley is connected to a driven belt pulley through a transmission belt, and the driven belt pulley is fixedly connected to the drive shaft by insertion; On one side of the screening water tank, there is an adjustment component. The adjustment component includes a positioning seat fixedly connected to the screening water tank. A transverse adjustment bolt is pivotally connected to the positioning seat. A sliding seat is screwed on the adjustment bolt, and the sliding seat is fixedly connected to the adjustment seat;

[0007] A longitudinal screw conveyor is inserted and fixed at the bottom of the discharge chamber. The screw conveyor includes a conveying pipe. The outer wall of the conveying pipe abuts against the guide plate and the side wall of the screening water tank respectively and forms a feeding groove opposite to the conveying roller. A spiral conveying blade is arranged in the conveying pipe. One end of the conveying pipe extends out of the screening water tank and is fixedly connected with an inclined discharge接管. A drain pipe connected to the bottom of the feed chamber is fixedly connected to the bottom of the screening water tank.

[0008] Preferably, an inclined slag discharge port is formed in the upper part on the left side of the screening water tank, and the slag removal slide plate is inserted into the slag discharge port and abuts against the bottom surface of the slag discharge port.

[0009] Preferably, the slag removal plates are evenly distributed in a ring around the central axis of the drive shaft. An inclined limiting edge is formed by bending the outer side edge of the slag removal plate; The filter water grooves are evenly distributed longitudinally on the slag removal plates.

[0010] Preferably, the water inlets are linearly and evenly distributed longitudinally on the screening water tank. A strip-shaped opening is formed on the side wall of one side of the water inlet pipe. The right side of the screening water tank is inserted into the opening of the screening water tank and is fixedly connected with the water inlet pipe. A plug is arranged at one end of the water inlet pipe.

[0011] Preferably, a sealing plate is fixed to the end of the conveying pipe of the screw conveyor, and a conveying motor is fixed to the sealing plate. The shaft of the conveying motor is connected to the screw conveying blades. Several drainage holes are formed on the conveying pipe extending out of the screening pool and the discharge pipe respectively.

[0012] Preferably, a water receiving trough is provided below the conveying pipe and the discharge pipe, and a return water pipe is fixedly connected to the drain pipe and the water receiving trough respectively. A water storage tank is fixedly connected to the end of the return water pipe, and a water pump is provided in the water storage tank. The water pump is connected to the water inlet pipe through a pipeline.

[0013] The beneficial effects of this utility model are as follows:

[0014] This screening device uses the buoyancy of water to distinguish the weight of pine nuts, thereby removing kernelless pine nuts; at the same time, it realizes automatic output of pine nuts, which can save labor and improve production efficiency. Attached image description:

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a side view of the structure of this utility model;

[0017] Figure 3 This is a front view structural diagram of the present invention;

[0018] Figure 4 This is a cross-sectional view of the present invention from the front.

[0019] In the diagram: 1. Screening tank; 2. Conveying drum; 3. Baffle roller; 4. Guide plate; 5. Slag removal assembly; 6. Left baffle; 7. Screw conveyor; 8. Adjustment assembly; 9. Inlet pipe; 10. Adjustment seat; 20. Bearing seat; 30. Motor; 40. Drain pipe; 50. Driven pulley; 60. Transmission belt; 70. Driven pulley; 80. Discharge pipe. Detailed implementation method:

[0020] Example: See Figures 1 to 4As shown in the figure, a screening device suitable for pine nut grading includes a rectangular screening water tank 1. On the left side of the bottom of the screening water tank 1, there is a longitudinal conveying drum 2. Both ends of the conveying drum 2 respectively abut against the two side walls of the screening water tank 1. A central shaft 21 is arranged inside the conveying drum 2. Both ends of the central shaft 21 are hinged on the screening water tank 1 through bearings. A number of annularly distributed ridges 22 are formed on the outer cylindrical wall of the conveying drum 2. A retaining roller 3 close to the conveying drum 2 is inserted and fixed in the screening water tank 1 above the conveying drum 2. A right baffle 31 inclined upward to the right is formed on the retaining roller 3. An inclined deflector 4 is inserted and fixed in the screening water tank 1 right below the conveying drum 2. The deflector 4, the conveying drum 2, the retaining roller 3 and the right baffle 31 divide the screening water tank 1 into a feeding chamber a and a discharging chamber b;

[0021] Above the feeding chamber a, there is a longitudinal slag removal component 5. The slag removal component 5 includes a longitudinal driving shaft 51. Both ends of the driving shaft 51 are hinged on a "C"-shaped adjusting seat 10 through bearing seats 20. Transverse guide rails are respectively inserted on the front and rear sides of the adjusting seat 10. The guide rails are fixed on the screening water tank 1. A roller sleeve 52 is inserted and fixed on the driving shaft 51. Retaining discs 53 are respectively fixed at both ends of the roller sleeve 52. A number of annularly distributed slag removal plates 54 are inserted and fixed in the retaining discs 53. The inner side edges of the slag removal plates 54 are fixed on the roller sleeve 52. A number of filter water grooves 541 are formed on the slag removal plates 54; A circular arc-shaped left baffle 6 abuts against the left lower part of the slag removal component 5. An inclined slag removal slide plate 61 is formed by bending the upper end of the left baffle 6. Connecting side plates 62 are respectively formed on both sides of the slag removal slide plate 61. The connecting side plates 62 are fixed on the adjusting seat 10;

[0022] On the side wall of the screening water tank 1 above the upper right side of the right baffle 31, a number of longitudinally distributed water inlets are formed. A water inlet pipe 9 connected to the screening water tank 1 is fixed on the outer wall on the right side of the screening water tank 1; One end of the central shaft 21 is fixedly connected to the rotating shaft of the motor 30 through a coupling, and the other end extends out of the screening water tank 1 and is inserted and fixed with a driving pulley 70. The driving pulley 70 is connected to a driven pulley 50 through a transmission belt 60. The driven pulley 50 is inserted and fixed on the driving shaft 51; On one side of the screening water tank, there is an adjusting component 8. The adjusting component 8 includes a positioning seat 81 fixed on the screening water tank 1. A transverse adjusting bolt 82 is pivotally connected to the positioning seat 81. A sliding seat 83 is screwed on the adjusting bolt 82. The sliding seat 83 is fixed on the adjusting seat 10;

[0023] A longitudinal screw conveyor 7 is inserted and fixed to the bottom of the discharge chamber b. The screw conveyor 7 includes a conveying pipe. The outer wall of the conveying pipe abuts against the side wall of the guide plate 4 and the screening pool 1 and is formed with a feed trough 71 opposite to the conveying roller 2. The conveying pipe is provided with screw conveying blades. One end of the conveying pipe extends out of the screening pool 1 and is fixedly connected to an inclined discharge pipe 80. The bottom of the screening pool 1 is fixedly connected to a drain pipe 40 that communicates with the bottom of the feed chamber a.

[0024] Preferably, the upper left side of the screening tank 1 is formed with an inclined slag discharge port, and the slag removal slide plate 61 is inserted into the slag discharge port and abuts against the bottom surface of the slag discharge port.

[0025] Preferably, the slag removal plates 54 are evenly distributed in a ring around the central axis of the drive shaft 51, and the outer side of the slag removal plates 54 is bent into an oblique limiting edge; the filter tanks 541 are evenly distributed longitudinally on the slag removal plates 54.

[0026] Preferably, the water inlets 11 are evenly distributed in a linear longitudinal direction on the screening tank 1, and a strip-shaped opening is formed on one side of the pipe wall of the water inlet pipe 9. The right side of the screening tank 1 is inserted into the opening of the screening tank 1 and fixedly connected to the water inlet pipe 9. One end of the water inlet pipe 9 is provided with a plug 91.

[0027] Preferably, a sealing plate is fixed to the end of the conveying pipe of the screw conveyor 7, and a conveying motor is fixed to the sealing plate. The shaft of the conveying motor is connected to the screw conveying blades. Several drainage holes are formed on the conveying pipe extending out of the screening pool 1 and the discharge pipe 80.

[0028] Preferably, a water receiving trough is provided below the conveying pipe and the discharge pipe 80, and a return water pipe is fixedly connected to the drain pipe 40 and the water receiving trough respectively. A water storage tank is fixedly connected to the end of the return water pipe, and a water pump is provided in the water storage tank. The water pump is connected to the water inlet pipe 9 through a pipeline.

[0029] Working principle: This structure is a screening device suitable for pine nut grading. The structure of the screening device is as follows: Figure 1 As shown, first close the drain pipe 40 and stop the conveying of the screw conveyor 7, then inject water into the screening pool 1 through the water inlet pipe 9 to submerge the right baffle 31.

[0030] Then, by rotating the adjusting bolt 82, the adjusting seat 10 is moved, and the slag removal component 5 can be moved away from the top of the right baffle 31, so that the pine nuts can be poured into the feeding chamber a. Then, by rotating the adjusting bolt 82, the slag removal component 5 is reset and the transmission belt 60 is tensioned. By rotating the conveying roller 2, the accumulated pine nuts are dispersed and gradually conveyed to the discharge chamber b. The heavy pine nuts sink into the screw conveyor 7 and are output through the screw conveyor 7.

[0031] The lighter pine nuts float to the inlet 11, and the water coming out of the inlet 11 sends the lighter pine nuts to the light slag removal component 5. The drive shaft 51 on the slag removal component 5 rotates, and the slag removal plate 54 is used to retrieve the lighter pine nuts. As the slag removal component 5 rotates, the pine nuts on the slag removal component 5 are poured onto the slag removal slide plate 61 for output. In order to prevent water from overflowing the screening water tank 1, the drain pipe 40 can be opened for drainage. The drain pipe 40 is the main drainage pipe, and the screw conveyor 7 is the auxiliary drainage pipe. The water output from the inlet 11 can flow to the feed chamber a.

[0032] The embodiments described above are illustrative of the present invention and are not intended to limit the present invention. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be as set forth in the claims.

Claims

1. A screening device suitable for pine nut grading, comprising a rectangular screening tank (1), a longitudinal conveying roller (2) provided on the left side of the bottom of the screening tank (1), the two ends of the conveying roller (2) respectively abutting against the two side walls of the screening tank (1), a central shaft (21) provided inside the conveying roller (2), the two ends of the central shaft (21) being hinged to the screening tank (1) by bearings, characterized in that: The outer wall of the conveying drum (2) is formed with several annularly distributed convex strips (22). A baffle roller (3) close to the conveying drum (2) is inserted and fixed in the screening pool (1) on the upper side of the conveying drum (2). A right baffle (31) inclined to the right and facing upward is formed on the baffle roller (3). An inclined guide plate (4) is inserted and fixed in the screening pool (1) on the lower right side of the conveying drum (2). The guide plate (4), the conveying drum (2), the baffle roller (3) and the right baffle (31) separate the screening pool (1) into a feeding chamber (a) and a discharging chamber (b). A longitudinal slag removal assembly (5) is provided above the feed chamber (a). The slag removal assembly (5) includes a longitudinal drive shaft (51). Both ends of the drive shaft (51) are hinged to a U-shaped adjusting seat (10) via bearing seats (20). Transverse guide rails are inserted into the front and rear sides of the adjusting seat (10), and the guide rails are fixed to the screening tank (1). A roller sleeve (52) is inserted and fixed to the drive shaft (51). Baffles (53) are fixed to both ends of the roller sleeve (52). The slag removal assembly (5) has several annularly distributed slag removal plates (54) fixedly inserted inside. The inner side of the slag removal plates (54) is fixed to the roller sleeve (52). Several water filter grooves (541) are formed on the slag removal plates (54). The lower left side of the slag removal assembly (5) is abutted by an arc-shaped left baffle (6). The upper end of the left baffle (6) is bent to form an inclined slag removal slide plate (61). Connecting side plates (62) are formed on both sides of the slag removal slide plate (61). The connecting side plates (62) are fixed to the adjusting seat (10). The right baffle (31) has several longitudinally distributed inlets (11) formed on the side wall of the screening pool (1) on the upper right side. The outer wall of the right side of the screening pool (1) is fixedly connected to the inlet pipe (9) which is connected to the screening pool (1). One end of the central shaft (21) is fixedly connected to the rotating shaft of the motor (30) through a coupling, and the other end extends out of the screening pool (1) and is fixedly fitted with a drive pulley (70). The drive pulley (70) is connected to the drive belt (6) through the drive belt (6). 0) is connected to the driven pulley (50), and the driven pulley (50) is fixed on the drive shaft (51); an adjustment assembly (8) is provided on one side of the screening water tank (1), the adjustment assembly (8) includes a positioning seat (81) fixed on the screening water tank (1), a transverse adjustment bolt (82) is pivotally connected on the positioning seat (81), a slide (83) is screwed on the adjustment bolt (82), and the slide (83) is fixed on the adjustment seat (10); A longitudinal screw conveyor (7) is inserted and fixed at the bottom of the discharge chamber (b). The screw conveyor (7) includes a conveying pipe. The outer wall of the conveying pipe abuts against the guide plate (4) and the side wall of the screening pool (1) and is formed with a feed trough (71) opposite to the conveying roller (2). The conveying pipe is provided with a screw conveying blade. One end of the conveying pipe extends out of the screening pool (1) and is fixedly connected to an inclined discharge pipe (80). The bottom of the screening pool (1) is fixedly connected to a drain pipe (40) that communicates with the bottom of the feed chamber (a).

2. The screening device for pine nut grading according to claim 1, characterized in that: The upper left side of the screening pool (1) is formed with an inclined slag discharge port, and the slag removal slide plate (61) is inserted into the slag discharge port and abuts against the bottom surface of the slag discharge port.

3. A screening device suitable for pine nut grading according to claim 1, characterized in that: The slag removal plates (54) are evenly distributed in a ring around the central axis of the drive shaft (51), and the outer side of the slag removal plates (54) is bent into an oblique limiting edge; the water filter tanks (541) are evenly distributed longitudinally on the slag removal plates (54).

4. A screening device suitable for pine nut grading according to claim 1, characterized in that: The inlet (11) is evenly distributed in a linear longitudinal direction on the screening tank (1). A strip-shaped opening is formed on the pipe wall on one side of the inlet pipe (9). The right side of the screening tank (1) is inserted into the opening of the screening tank (1) and fixedly connected to the inlet pipe (9). A plug (91) is provided at one end of the inlet pipe (9).

5. A screening device suitable for pine nut grading according to claim 1, characterized in that: The end of the conveying pipe of the screw conveyor (7) is fixedly connected to a sealing plate, and a conveying motor is fixedly connected to the sealing plate. The shaft of the conveying motor is connected to the screw conveying blades. Several water leakage holes are formed on the conveying pipe and the discharge pipe (80) extending out of the screening pool (1).

6. A screening device suitable for pine nut grading according to claim 5, characterized in that: A water receiving trough is provided below the conveying pipe and the discharge pipe (80). A return water pipe is fixedly connected to the drain pipe (40) and the water receiving trough respectively. A water storage tank is fixedly connected to the end of the return water pipe. A water pump is provided in the water storage tank. The water pump is connected to the inlet pipe (9) through a pipeline.

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