CN114537809A - Hierarchical automatic vanning device of water chestnut - Google Patents

Abstract

The invention discloses a water chestnut grading automatic packing device, in particular to the related technical field of fruit packing equipment, comprising a frame, a vibration grading component, three collecting components and three weighing control components. The invention provides power to the sieve plate through the vibrating grading component, so that the sieve plate has a rapid return characteristic, can effectively reduce the accumulation of water chestnuts, increase the forward speed of the water chestnuts, make the water chestnuts less likely to be stuck in the aperture, improve the classification rate, and use three groups of The screening area can realize the rapid screening of water chestnuts of different sizes, reduce the size difference between the subsequent finished water chestnuts, and with the cooperation of the weighing control component, realize the automatic weighing and packing effect of the water chestnuts, which greatly saves labor. , Water chestnuts of all grades are sold directly by box, reducing the collision damage of water chestnuts during secondary weighing and packing. The problem is that it works well.

Description

A kind of water chestnut grading automatic packing device

technical field

The invention relates to the related technical field of fruit packing equipment, in particular to a water chestnut grading automatic packing device.

Background technique

The existing fruit classifiers can be divided into roller type, drum type, sieve type and weighing type, but water chestnuts have extremely irregular shapes. There is a certain friction force, the surface of water chestnuts is smooth, the shape is irregular, and there is no definite movement rule and grading standard on the roller type fruit classifier; the drum type classifier is suitable for the classification of water chestnuts, but the classification efficiency is low; The weighing type fruit classifier is mainly suitable for For vegetables and fruits that are slightly larger in size or change in shape, or are sensitive to damage, they are not suitable for fruits and vegetables that are small in size or whose weight difference is too small. Common pitaya, crab, oyster and other materials on the market are all graded by weighing. machine;

Compared with the above materials, the difference in weight and size of water chestnuts is small. If the weighing classifier cannot achieve the expected efficiency, if several water chestnuts are weighed together, the size of the water chestnuts cannot be guaranteed. The classifier is not conducive to the classification of water chestnuts. The sieve plate classifier has high screening efficiency and good adaptability to water chestnuts. The frequency of the sieve plate is controlled to screen the water chestnuts, which greatly reduces the collision damage to the water chestnuts and improves the classification efficiency.

The traditional device has the following shortcomings: the current market roller type, drum type, sieve type, weighing type fruit classifier has many discomforts when it is suitable for water chestnut screening, the screening effect is not good and the screening The efficiency is low, which increases the secondary labor of the staff, and at the same time, it is very easy to cause the squeezing and damage of the water chestnuts due to multiple collisions, so that the grading equipment on the market is not suitable for the grading of water chestnuts.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a water chestnut grading automatic packing device, through the cooperation of the vibration grading component and the weighing control component, the rapid grading and screening of water chestnuts and the automatic weighing and packing effects are realized, which greatly saves labor, Water chestnuts of all grades are sold directly by box, reducing the collision damage of the water chestnuts in the second weighing and packing, so as to solve the problems mentioned in the above background.

In order to achieve the above object, the present invention provides the following technical solutions: a water chestnut grading automatic packing device, comprising a frame, a vibration grading assembly, three collecting assemblies and three weighing control assemblies, and the vibration grading assembly is installed on the frame. At the inner top, three collection components are installed side by side on the rack, and the collection components are arranged corresponding to the vibration grading components, and the three weighing control components are installed side by side at the inner bottom end of the rack, and the weighing control components and the collection components are arranged correspondingly;

The vibration grading assembly includes a mounting bracket, a sieve plate, a storage box with an opening at the top, a flow guide, four hanging flat irons and a crank rocker transmission part. The sieve plate is assembled on the top of the frame, and the installation The bracket is welded on one side of the outer wall of the rack, the storage box is assembled on the upper surface of the mounting bracket, one side of the four hanging flat irons is rotated and installed on the top and bottom ends of the two side walls of the sieve plate through bearings, and the other side of the hanging flat iron passes through The bearing is rotatably connected with the inner wall of the frame, the flow guide is integrally welded on one side of the bottom end of the sieve plate, and the flow guide is communicated with the storage box, and the crank-rocker transmission part is installed between the frame and the sieve plate.

In a preferred embodiment, the sieve plate is made of metal material, and the sieve plate is arranged in an inclined shape in the frame.

In a preferred embodiment, protective baffles are extended and welded around the upper surface of the sieve plate, and three sieve sections are spaced from left to right on the sieve plate. It consists of sieve holes, and the sieving accuracy of the three sieve sections gradually decreases from left to right.

In a preferred embodiment, a plurality of sets of inclined slides are installed side by side at the front end of the upper surface of the screen deck, the inclined slides communicate with the screen deck, and the top of the inclined slides adopts an open design.

In a preferred embodiment, the crank-rocker transmission part includes a mounting seat, a driving motor, a turntable, a driving screw and a fish-eye sleeve, the mounting seat is locked and mounted on one side of the upper surface of the frame, and the driving The motor is locked and installed on the outside of the mounting seat, the turntable is rotatably installed on the inside of the mounting seat, and the output end of the drive motor is connected with the turntable in a transmission, the fisheye sleeve is installed at the edge of the outer wall of the turntable, and the head of the drive screw rotates the sleeve It is arranged on the fish-eye sleeve, and the tail of the drive screw is connected with the lower surface side of the sieve plate through a universal ball head.

In a preferred embodiment, the collection assembly includes a funnel with an opening at the top and a pneumatic valve, the funnels are installed side by side in the middle of the frame, and the tops of the funnels are distributed correspondingly to the three screening areas. A pneumatic valve is fitted at the bottom of the funnel.

In a preferred embodiment, the weighing control assembly includes a reinforced steel frame, four load cells, a roller guide rail, a control unit and a push feeding part, the reinforced steel frames are distributed side by side at the bottom end of the frame, Four load cells are installed on the upper surface of the reinforced steel frame in a rectangular shape and are located directly under the funnel, the roller guide rails are assembled on the reinforced steel frame and are in close contact with the load cells, and the control unit is installed on the side wall of the installation bracket , the pushing and feeding part is assembled on the reinforced steel frame, and the pushing and feeding part is correspondingly arranged with the roller guide rail.

In a preferred embodiment, a tail plate is installed on the back of the reinforced steel frame, and the roller guide rail is in an inclined downward structure at the extension of one side of the reinforced steel frame.

In a preferred embodiment, the pushing and feeding part includes a connecting shaft, a pneumatic push rod, two transmission arms, a tail rod, two limit plates and a pushing shaft, and the connecting shaft is locked and installed on the reinforced steel At the bottom of the frame, two sets of transmission arms are connected to both ends of the connecting shaft through bearings, the tail rod is locked and installed at the tail between the two transmission arms, and the pneumatic push rod is rotated and installed on the lower surface of the reinforced steel frame through a pin shaft. The output end of the pneumatic push rod is set in the middle of the tail rod through the bearing rotation, the two limit plates are installed in parallel on both sides of the upper surface of the reinforced steel frame, and the push shaft slides through the two limit plates. , and the tail of the transmission arm is rotatably connected with both ends of the push shaft.

In a preferred embodiment, the control unit includes an electric box and a plc controller, the electric box is locked and mounted on the side wall of the mounting bracket, the plc controller is assembled on the electric box, and the electric box is connected by wires It is electrically connected with the plc controller, drive motor, pneumatic valve, load cell and pneumatic push rod, and the plc controller establishes contact with the drive motor, pneumatic valve, load cell and pneumatic push rod through wireless signals.

Compared with the prior art, the beneficial effects of the present invention are:

1. The present invention is provided with a vibrating grading component, and three sieve sections with different sieving precisions are distributed on the sieve plate, which can realize the rapid screening effect on water chestnuts of different diameters, and avoid the situation of mixing water chestnuts with large size differences, And with the assistance of the crank-rocker transmission part, the sieve plate has the characteristics of rapid return, which can effectively reduce the accumulation of water chestnuts, increase the forward speed of the water chestnuts, make the water chestnuts not easy to be stuck in the aperture, improve the classification rate, and the size of the water chestnuts is improved. The water chestnuts are sieved by the sieving area and then transferred to the funnel for sieving, and the working state of the funnel can be quickly opened and closed through the pneumatic valve;

2. The present invention is provided with a weighing control component, and the roller guide rail is installed on the reinforced steel frame and fitted with the weighing sensor. Under the action of the control unit, the plc controller can be used to accurately control the driving motor and the pneumatic valve. The control ensures the orderly progress of the overall work of the equipment. The weighing module of the control unit uses GX works2 to write the internal program of the PLC, and monitors and sets the value in real time through the electronic screen. The roller guide itself has weight. Zero calibration of the four load cells, and put in the weights for weighing. The subsequent switch on and off does not require repeated calibration. When the water chestnut falls to the set value, the load cell passes through the internal signal amplification circuit and AD acquisition circuit, etc. The micro-voltage analog signal of the load cell is converted into a digital signal, and the real-time weight value can be obtained through the processing of the 485 module. When the weighing weight reaches the predetermined value, the pneumatic valve of the funnel is closed;

3. The present invention is provided with a push feeding part. After the water chestnuts in the box on the roller guide rail are weighed, the plc controller electronically controls the pneumatic push rod to perform telescopic work, and the two ends of the transmission arm are respectively connected with the tail rod and the push shaft. Linkage effect, so the driving force of the pneumatic push rod is transmitted to the push shaft through the transmission arm, so that the push shaft moves in the limit plate, so that the weighed water chestnut box can be quickly removed from the roller guide rail to achieve rapid down the effect of the material;

To sum up, the sieve plate is powered by the vibrating grading component, so that the sieve plate has a rapid return characteristic, which can effectively reduce the accumulation of water chestnuts, increase the forward speed of water chestnuts, make the water chestnuts not easy to be stuck in the aperture, improve the classification rate, and use three The group screening section can realize the rapid screening of water chestnuts of different sizes, reduce the size difference between the subsequent finished water chestnuts, and with the cooperation of the weighing control component, realize the automatic weighing and packing effect of the water chestnuts, which saves a lot of money. Labor, water chestnuts of all grades are directly sold by box, reducing the collision damage of water chestnuts during secondary weighing and packing. problem, the use effect is good.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

2 is a schematic diagram of the overall back structure of the present invention;

3 is a schematic diagram of the distribution of sieve plates and storage boxes of the present invention;

Fig. 4 is the distribution schematic diagram of sieve plate and funnel of the present invention;

5 is a schematic structural diagram of the crank-rocker transmission part of the present invention;

Fig. 6 is the distribution schematic diagram of funnel and roller guide rail of the present invention;

7 is a schematic structural diagram of a weighing control assembly of the present invention;

8 is a schematic diagram of the distribution of the push shaft and the reinforcing steel frame of the present invention;

Fig. 9 is the structural schematic diagram of the push feeding part of the present invention;

Fig. 10 is a working flow chart of the weighing control assembly of the present invention.

In the picture: 1. Rack; 2. Mounting bracket; 3. Screen plate; 4. Storage box; 5. Diversion piece; 6. Hanging flat iron; 7. Protection baffle; Road; 10. Mounting seat; 11. Drive motor; 12. Turntable; 13. Drive screw; 14. Fisheye sleeve; 15. Funnel; 16. Pneumatic valve; 17. Reinforced steel frame; 18. Load cell; 19 , roller guide rail; 20, tail plate; 21, connecting shaft; 22, pneumatic push rod; 23, transmission arm; 24, tail rod; 25, limit plate; 26, push shaft; 27, electric box; 28, plc controller.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

1-10, the present invention provides a technical solution: a water chestnut grading automatic packing device, comprising a frame 1, a vibration grading component, three collecting components and three weighing control components, and the vibration grading component is installed in the At the top of the rack 1, three collection components are installed side by side on the rack 1, and the collection components and the vibration grading components are arranged correspondingly, and the three weighing control components are installed side by side at the inner bottom of the rack 1, and the weighing control Collection component corresponding settings;

The vibration grading assembly includes a mounting bracket 2, a sieve plate 3, a storage box 4 with an opening on the top, a deflector 5, four hanging flat irons 6 and a crank rocker transmission part, and the sieve plate 3 is assembled on the top of the frame 1, The mounting bracket 2 is welded on one side of the outer wall of the rack 1, the storage box 4 is assembled on the upper surface of the mounting bracket 2, and one side of the four hanging flat irons 6 is rotated and installed on the top and bottom ends of the two side walls of the sieve plate 3 through bearings, and the hanging flat irons 6 are rotated. The other side of the iron 6 is rotatably connected to the inner wall of the frame 1 through a bearing, the guide member 5 is integrally welded on the bottom side of the sieve plate 3, and the guide member 5 communicates with the storage box 4, and the crank-rocker transmission part is installed in the machine. Between the frame 1 and the sieve plate 3.

As shown in FIGS. 1 , 3 and 4 , in this embodiment, the sieve plate 3 is made of metal material, and the sieve plate 3 is inclined in the frame 1 .

As shown in Figures 1 and 3, in this embodiment, specifically, the upper surface of the sieve plate 3 is extended and welded with protective baffles 7 all around, and the sieve plate 3 is spaced from left to right with three sieve sections 8. The partitions 8 are all composed of multiple groups of uniformly distributed through-hole sieve holes, and the sieving precision of the three sieving partitions 8 gradually decreases from left to right. The rapid screening effect of water chestnuts with different diameters can avoid the situation of mixing water chestnuts with large differences in size.

As shown in Figures 1 and 3, in this embodiment, specifically, a plurality of groups of inclined slideways 9 are installed side by side at the front end of the upper surface of the screen plate 3, the inclined slideways 9 communicate with the screen plate 3, and the top of the inclined slideway 9 adopts Open design.

As shown in FIG. 5 , in this embodiment, the crank-rocker transmission part specifically includes a mounting seat 10 , a driving motor 11 , a turntable 12 , a driving screw 13 and a fisheye sleeve 14 , and the mounting seat 10 is locked and installed on the machine On one side of the upper surface of the frame 1, the driving motor 11 is locked and installed on the outside of the mounting seat 10, the turntable 12 is rotatably installed on the inner side of the mounting seat 10, and the output end of the driving motor 11 is connected with the turntable 12 in a driving manner, and the fish-eye sleeve 14 is installed on the outer wall of the turntable 12. At the edge, the head of the transmission screw 13 is rotatably sleeved on the fish-eye sleeve 14, and the tail of the transmission screw 13 is connected to the lower surface of the sieve plate 3 through a universal ball head, so that the sieve plate 3 has a rapid return characteristic. It can effectively reduce the accumulation of water chestnuts, increase the forward speed of water chestnuts, make the water chestnuts less likely to be stuck in the aperture, and improve the classification rate. The pneumatic valve 16 can quickly open and close the working state of the funnel 15 .

As shown in Figures 1, 2, 4 and 6, in this embodiment, specifically, the collecting assembly includes a funnel 15 with an opening at the top, a pneumatic valve 16, and the funnels 15 are installed side by side in a locked manner in the middle of the frame 1, and The top of the funnel 15 is correspondingly distributed with the three screening sections 8 , and the pneumatic valve 16 is assembled at the bottom of the funnel 15 .

As shown in Figures 1, 2, 6 and 7, in this embodiment, specifically, the weighing control assembly includes a reinforced steel frame 17, four load cells 18, a roller guide 19, a control unit, and a pushing and feeding part, Reinforced steel frames 17 are distributed side by side at the inner bottom end of the frame 1. Four load cells 18 are installed in a rectangular shape on the upper surface of the reinforced steel frame 17 and are located directly below the funnel 15. The roller guide rails 19 are assembled on the reinforced steel frame 17 and are connected with The load cell 18 is in contact with each other, the control unit is installed on the side wall of the mounting bracket 2 , and the push feeding part is assembled on the reinforced steel frame 17 , and the pushing feeding part is arranged corresponding to the roller guide rail 19 .

As shown in FIGS. 1 and 2 , in this embodiment, a tail plate 20 is installed on the back of the reinforcing steel frame 17 , and the roller guide rail 19 is inclined downward at the extension of the reinforcing steel frame 17 .

As shown in FIGS. 7 , 8 and 9 , in this embodiment, the pushing and feeding part specifically includes a connecting shaft 21 , a pneumatic push rod 22 , two transmission arms 23 , a tail rod 24 , two limit plates 25 and Push the shaft 26, the connecting shaft 21 is locked and installed at the bottom of the reinforcing steel frame 17, the two sets of transmission arms 23 are connected with both ends of the connecting shaft 21 through bearings, and the tail rod 24 is locked and installed at the tail between the two transmission arms 23, The pneumatic push rod 22 is rotated and installed on the lower surface side of the reinforced steel frame 17 through the pin shaft, and the output end of the pneumatic push rod 22 is set in the middle of the tail rod 24 through the bearing rotation, and the two limit plates 25 are installed in parallel on the reinforced steel frame 17. On both sides of the upper surface, the push shaft 26 slides through the two limit plates 25, and the tail of the transmission arm 23 is rotatably connected with both ends of the push shaft 26, the plc controller 28 electrically controls the pneumatic push rod 22 to perform telescopic work, and the transmission arm The two ends of 23 are respectively connected with the tail rod 24 and the push shaft 26 to achieve a linkage effect, so the pushing force of the pneumatic push rod 22 is transmitted to the push shaft 26 through the transmission arm 23, so that the push shaft 26 moves in the limit plate 25, so that the Quickly remove the weighed water chestnut box from the roller guide 19 .

As shown in FIG. 2 , in this embodiment, the control unit specifically includes an electric box 27 and a plc controller 28 , the electric box 27 is locked and installed on the side wall of the mounting bracket 2 , and the plc controller 28 is assembled on the electric box 27 , the electrical box 27 is electrically connected to the plc controller 28, the drive motor 11, the pneumatic valve 16, the load cell 18 and the pneumatic push rod 22 through wires, and the plc controller 28 is connected to the drive motor 11, pneumatic valve 16, The connection between the load cell 18 and the pneumatic push rod 22 is established, and the plc controller 28 can be used to precisely regulate the drive motor 11 and the pneumatic valve 16, which ensures the orderly progress of the overall work of the equipment. The weighing module of the control unit uses GX works2 writes the PLC internal program, monitors and sets the value in real time through the electronic screen. The roller guide 19 itself has weight. First, the four load cells 18 are zero-marked, and then the weight is put in to mark the weight. The subsequent switch on and off does not require repeated calibration. When the water chestnut falls to the set value, the load cell 18 converts the micro-voltage analog signal of the load cell 18 into a digital signal through the internal signal amplification circuit and AD acquisition circuit, which can be passed through 485 The processing of the module results in a real-time weight value.

Working principle: When using, first move the batch of water chestnuts to the upper side of the rack 1, and then put the water chestnuts on the front end of the sieve plate 3. Since there are multiple groups of inclined slides 9 installed at the front end of the sieve plate 3, the water chestnuts can be evenly distributed. The shunting and guiding of water chestnuts makes the water chestnuts evenly distributed on the surface of the decorative plate, avoiding the blocking of the water chestnuts and improving the efficiency of subsequent screening and packing;

Before the weighing work, the sieve plate 3 can be shaken on the top of the frame 1 by hanging the flat iron 6 by having a vibrating grading component, and there are three sieve sections 8 with different sieving precisions distributed on the sieve plate 3, which can realize the The rapid screening effect of water chestnuts with different diameters ensures the uniformity of the water chestnuts in the box, avoids the mixed packing of water chestnuts with large differences in size, and starts the drive motor 11 with the assistance of the crank-rocker transmission part to make the turntable 12 Following the rotation, because the two ends of the drive screw 13 are respectively connected with the turntable 12 and the lower surface of the sieve plate 3, the power cycle of the driving motor 11 can be transmitted to the sieve plate 3, so that the sieve plate 3 is in a continuous state on the frame 1. The state of shaking back and forth accelerates the flow of water chestnuts, so that the sieve plate 3 has the characteristics of rapid return, which can effectively reduce the accumulation of water chestnuts, increase the forward speed of water chestnuts, make the water chestnuts not easy to be stuck in the aperture, improve the classification rate, and improve the classification rate. The water chestnuts are sieved in the sieving section 8 and then transferred to the funnel 15 for screening, and the working state of the funnel 15 can be quickly opened and closed through the pneumatic valve 16, and some residual water chestnuts are transferred to the storage box 4 through the deflector 5. to collect;

When the weighing work is carried out, the roller guide rail 19 is installed on the reinforced steel frame 17 and fits with the load cell 18 by providing the weighing control assembly, and the roller guide rail 19 corresponds to the funnel 15, and then the staff will empty the box. The receiving work can be performed by placing it on the roller guide rail 19. Under the action of the control unit, the plc controller 28 can be used to precisely control the driving motor 11 and the pneumatic valve 16, which ensures the orderly progress of the overall work of the equipment. The weighing module of the control unit uses GX works2 to write the internal program of the PLC, and monitors and sets the value in real time through the electronic screen. The roller guide rail 19 itself has weight. Put in the weights for weighing, and the subsequent switch on and off does not need to repeat the calibration. When the water chestnuts drop to the set value, the load cell 18 uses the internal signal amplification circuit and AD acquisition circuit to simulate the micro-voltage signal of the load cell 18. Converted into digital signals, the real-time weight value can be obtained through the processing of the 485 module. When the weighing weight reaches the predetermined value, the pneumatic valve 16 of the funnel 15 is closed to achieve accurate calibration and weighing work, which is convenient for staff to operate and use;

After the weighing is completed, by providing a push feeding part, when the water chestnuts in the box on the roller guide 19 are weighed, the plc controller 28 electronically controls the pneumatic push rod 22 to perform telescopic work. Only the front and rear translational sliding can be carried out under the blocking of the transmission arm 23. At the same time, the two ends of the transmission arm 23 are respectively connected with the tail rod 24 and the push shaft 26 to achieve a linkage effect. Therefore, the driving force of the pneumatic push rod 22 is transmitted to the push shaft 26 through the transmission arm 23, so that the Push the shaft 26 to move in the limit plate 25, so that the weighed water chestnut box can be quickly removed from the roller guide rail 19 to achieve the effect of fast unloading, and the staff only needs to re-insert a new empty box. , reducing the workload of the staff, repeating the above work can realize the continuous grading, quantitative weighing and packing of water chestnuts, the overall operation is convenient and the continuity is high.

The components included in the automatic packing device for classification of water chestnuts of the present invention are all general standard parts or components known to those skilled in the art, and the structures and principles thereof are known to those skilled in the art through technical manuals or through conventional experimental methods, When the device is idle, connect all the above electrical components, which refer to power components, electrical components, and the adapted monitoring computer and power supply through wires. The specific connection means should refer to the above working principle. The electrical connection is completed in a working sequence, and the detailed connection method is a well-known technology in the art. It mainly introduces the working principle and process, and does not describe the electrical control.

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

Claims (10)

1. A water chestnut grading automatic packing device is characterized in that, comprising frame (1), vibration grading assembly, three collection assemblies and three weighing control assemblies, and described vibration grading assembly is installed in frame (1) At the inner top, three collection components are installed side by side on the rack (1), and the collection components are arranged corresponding to the vibration grading components, and the three weighing control components are installed side by side on the inner bottom end of the rack (1), and the weighing control components Set corresponding to the collection component; The vibration grading assembly includes a mounting bracket (2), a sieve plate (3), a storage box (4) with an opening at the top, a flow guide (5), four hanging flat irons (6) and a crank-rocker transmission part , the sieve plate (3) is assembled on the inner top of the frame (1), the mounting bracket (2) is welded on one side of the outer wall of the frame (1), and the storage box (4) is assembled on the mounting bracket (2) On the upper surface, one side of the four hanging flat irons (6) is rotatably mounted on the top and bottom ends of both side walls of the sieve plate (3) through bearings, and the other side of the hanging flat irons (6) passes through the bearings and the inner wall of the frame (1). Rotationally connected, the air guide (5) is integrally welded on the bottom end side of the sieve plate (3), and the air guide (5) communicates with the storage box (4), and the crank-rocker transmission part is installed on the machine between the frame (1) and the sieve plate (3). 2. A water chestnut grading automatic packing device according to claim 1, characterized in that: the sieve plate (3) is made of metal material, and the sieve plate (3) is inclined in the frame (1) state settings. 3. A kind of water chestnut grading automatic box packing device according to claim 1, is characterized in that: all around the upper surface of described sieve plate (3) is extended and welded with protective baffle plate (7), and on the sieve plate (3) There are three sieve sections (8) distributed at intervals from left to right, the sieve sections (8) are all composed of multiple groups of uniformly distributed through sieve holes, and the sieving accuracy of the three sieve sections (8) is gradually from left to right. decrease. 4. A kind of water chestnut grading automatic packing device according to claim 1, is characterized in that: the front end of the upper surface of the sieve plate (3) is installed side by side with multiple groups of inclined slideways (9), and the inclined slideways ( 9) It communicates with the sieve plate (3), and the top of the inclined slideway (9) adopts an open design. 5. A water chestnut grading automatic packing device according to claim 2, characterized in that: the crank-rocker transmission part comprises a mounting seat (10), a drive motor (11), a turntable (12), a drive screw (13) and a fish-eye cover (14), the mounting seat (10) is locked and installed on one side of the upper surface of the frame (1), and the drive motor (11) is locked and installed on the outside of the mounting seat (10), The turntable (12) is rotatably installed on the inner side of the mounting seat (10), and the output end of the drive motor (11) is connected to the turntable (12) in a transmission manner, and the fish-eye sleeve (14) is installed at the edge of the outer wall of the turntable (12), The head of the transmission screw (13) is rotatably sleeved on the fish-eye sleeve (14), and the tail of the transmission screw (13) is connected to the lower surface side of the screen plate (3) through a universal ball head. 6. A water chestnut grading automatic packing device according to claim 1, characterized in that: the collecting assembly comprises a funnel (15) and a pneumatic valve (16) with an opening on the top, and the funnels (15) are side by side The lock is installed in the middle of the frame (1), and the top of the funnel (15) is distributed correspondingly with the three screen sections (8) respectively, and the pneumatic valve (16) is assembled at the bottom of the funnel (15). 7. A water chestnut grading automatic packing device according to claim 1, characterized in that: the weighing control assembly comprises a reinforced steel frame (17), four load cells (18), a roller guide rail (19) ), a control unit and a push feeding part, the reinforced steel frames (17) are distributed side by side at the inner bottom end of the frame (1), and four load cells (18) are installed in a rectangular shape on the upper surface of the reinforced steel frame (17) and Located directly below the funnel (15), the roller guide rail (19) is assembled on the reinforced steel frame (17) and is in contact with the load cell (18), and the control unit is installed on the side wall of the mounting bracket (2) , the pushing and feeding part is assembled on the reinforced steel frame (17), and the pushing and feeding part is correspondingly arranged with the roller guide rail (19). 8. A water chestnut grading automatic packing device according to claim 7, characterized in that: a tail plate (20) is installed on the back of the reinforced steel frame (17), and the roller guide rail (19) is mounted on the reinforced steel frame (17) The extension on one side is inclined downward. 9. A water chestnut grading automatic packing device according to claim 7, characterized in that: the pushing and feeding part comprises a connecting shaft (21), a pneumatic push rod (22), two transmission arms (23), A tail rod (24), two limit plates (25) and a push shaft (26), the connecting shaft rod (21) is locked and mounted on the bottom of the reinforced steel frame (17), and two sets of transmission arms (23) pass through bearings Connected with both ends of the connecting shaft (21), the tail rod (24) is locked and installed at the tail between the two transmission arms (23), and the pneumatic push rod (22) is rotated and installed on the reinforced steel frame through the pin shaft (17) One side of the lower surface, and the output end of the pneumatic push rod (22) is set in the middle of the tail rod (24) through the bearing rotation, and the two limit plates (25) are installed in parallel on the reinforced steel frame (17) On both sides of the surface, the push shaft (26) slides through the two limiting plates (25), and the tail of the transmission arm (23) is rotatably connected to both ends of the push shaft (26). 10. A water chestnut grading automatic packing device according to claim 7, characterized in that: the control unit comprises an electric box (27), a plc controller (28), and the electric box (27) is locked and installed On the side wall of the mounting bracket (2), the plc controller (28) is assembled on the electric box (27), and the electric box (27) is connected to the plc controller (28), the drive motor (11), the pneumatic The valve (16), the load cell (18) and the pneumatic push rod (22) are electrically connected, and the plc controller (28) communicates with the drive motor (11), the pneumatic valve (16) and the load cell (18) through wireless signals ) and the pneumatic push rod (22).

Images