CN108706335A - Charging collating unit for bulk granular material packaging - Google Patents

Abstract

The invention discloses a kind of charging collating units for bulk granular material packaging, are related to packing machinery technology.The present invention includes collecting bin, rotation material fetching mechanism and conveying mechanism, the rotation material fetching mechanism includes rotation feeding disk, driving mechanism and negative pressure mechanism, it is provided with feeding station and discharge station in the outer circumference of the rotation feeding disk, the collecting bin is arranged at feeding station, the conveying mechanism is located at the lower section of rotation feeding disk, under the action of negative pressure mechanism, rotation feeding disk draws out the material in collecting bin from feeding station, and under the action of driving mechanism, the material of suction is delivered to discharge station；Gas shutoff plate is provided at the discharge station, the gas shutoff plate is used to cut off negative pressure feeding of the negative pressure mechanism to rotating feeding disk, and material in rotation feeding disk by dropping on conveying mechanism.Present invention is generally directed to the loose unpacked materials that grain size is larger, such as the feeding of preserved plum, the larger loose unpacked material of sour enzyme grain size, and manual type is substituted by the way of mechanization, improves feeding efficiency, reduces cost of labor.

Description

Feed finishing device for packaging of bulk granular materials

technical field

The invention relates to the technical field of packaging machinery, in particular to a feeding arrangement device for packaging bulk granular materials.

Background technique

At present, for the retrieving of bulk granular materials, the method of retrieving materials is generally carried out by means of a funnel hopper and a rotating turntable measuring cup. The specific working principle is that the bulk granular materials are accumulated in the funnel hopper, and the rotary turntable is set under the funnel hopper. The bulk granular material falls into the measuring cup of the rotating turntable under the action of gravity, the amount of the falling granular material is controlled by the volume of the measuring cup, and then the bulk granular material divided into each measuring cup is packaged. This method is suitable for bulk particles with small particle sizes, such as granule granules, salt granules, etc., but not suitable for large particle sizes, such as pickled plums and other bulk particle materials with large particle sizes. .

If the above-mentioned method is used for the larger bulk granular materials of packing particle size, it will cause the following problems: a shear plane will be formed between the upper surface of the rotating turntable measuring cup and the bottom surface of the funnel, and the larger The particle size of the particle material is shredded, which affects the integrity of the material and affects the quality of the product.

However, the existing packaging for food bulk granular materials with large particle sizes still uses manual weighing and then packaging through packaging equipment. This method has low efficiency and high labor costs.

Contents of the invention

In order to overcome the defects and deficiencies in the above-mentioned prior art, the application provides a feeding and sorting device for packaging of bulk granular materials. Bulk granular materials are still weighed manually, resulting in low feeding efficiency, low packaging efficiency, and high labor costs. A feed sorting device for bulk granular material packaging proposed by this application is mainly aimed at the feeding sorting of bulk materials with larger particle sizes, such as plums, acid enzymes, etc., and adopts mechanized The method replaces the manual method, improves the efficiency of feeding and sorting, improves the packaging efficiency and reduces labor costs.

In order to solve the problems in the above-mentioned prior art, the application is achieved through the following technical solutions:

The feeding and sorting device for bulk granular material packaging is characterized in that it includes a collection bin, a rotary reclaiming mechanism and a conveying mechanism, and the rotary reclaiming mechanism includes a rotary reclaiming tray, a driving mechanism and a negative pressure mechanism. The outer circumference of the rotary reclaiming tray is provided with a retrieving station and a feeding station, the collection bin is set at the reclaiming station, corresponding to the rotating retrieving tray; the conveying mechanism is located on the rotating retrieving tray Below, corresponding to the blanking station, the negative pressure mechanism provides negative pressure for the rotary reclaiming tray, and the driving mechanism drives the rotary retrieving tray to rotate. Under the action of the negative pressure mechanism, the rotating retrieving tray will collect The material in the bin is sucked out from the reclaiming station, and under the action of the driving mechanism, the sucked material is transported to the unloading station; the unloading station is provided with an air blocking plate, and the air blocking plate It is used to cut off the negative pressure supply of the negative pressure mechanism to the rotary retrieving tray, and the material falls from the rotary retrieving tray to the conveying mechanism.

Along the rotation direction of the rotary retrieving tray, an air blocking plate is arranged on the rotary retrieving tray between the unloading station and the reclaiming station.

The rotary reclaiming tray includes a vacuum negative pressure part and a negative pressure retrieving part. A vacuum negative pressure cavity is arranged in the vacuum negative pressure part, and the vacuum negative pressure cavity is connected with a negative pressure mechanism; the negative pressure retrieving The inner wall of the vacuum negative pressure part is in contact with the outer circumferential surface of the vacuum negative pressure part, and the negative pressure retrieving part is provided with several feeding troughs, which communicate with the vacuum negative pressure chamber of the vacuum negative pressure part; the air blocking plate Arranged in the vacuum negative pressure part, the air blocking plate is used to block the communication between the material retrieving chute and the vacuum negative pressure chamber in a certain arc section.

Relative rotation occurs between the negative pressure retrieving part and the vacuum negative pressure part, and the driving mechanism drives the negative pressure retrieving part to rotate around the vacuum negative pressure part; In a certain arc section blocked by the air blocking plate on the upper part, the communication between the feeding trough and the vacuum negative pressure chamber is disconnected.

The negative pressure retrieving part is connected with the vacuum negative pressure part as a whole, the rotary retrieving tray is connected with the frame through the rotating shaft, relative rotation occurs between the rotating retrieving tray and the rotating shaft, and the driving mechanism drives the rotating retrieving The material coil rotates around the axis of rotation.

The air blocking plate is located inside the vacuum negative pressure chamber, and the rotating shaft extends into the vacuum negative pressure chamber. The air blocking plate is fan-shaped. One end of the air blocking plate is fixed on the rotating shaft, and the other end is in contact with the circumferential surface of the vacuum negative pressure part. It is used to disconnect the connection between the retrieving chute and the vacuum negative pressure chamber in a certain arc section.

The air blocking plate is arranged in the arc section between the unloading station and the reclaiming station of the rotary reclaiming tray along the rotation direction of the rotary reclaiming tray.

The material retrieving chute is in the shape of a circular truncated cone, and the inner side of the material retrieving trough communicates with the vacuum negative pressure chamber through a communication hole.

The driving mechanism is a driving motor.

The negative pressure mechanism is a vacuum pump.

Compared with the prior art, the beneficial technical effects brought by this application are as follows:

1. The feed sorting device for bulk granular material packaging of this application takes out the bulk granular material accumulated in the collection bin through the rotating retrieving tray, and provides negative pressure to the rotating retrieving tray through the negative pressure mechanism when taking it out. pressure, so that the retrieving trough on the rotary reclaiming tray can suck the bulk granular materials into the retrieving trough, and then driven by the driving mechanism, the rotating retrieving tray rotates, and the material is rotated and transported from the reclaiming station to the For the unloading station, an air block is installed at the unloading station to cut off the negative pressure supply between the negative pressure mechanism and the rotary reclaiming tray, and the material in the revolving retrieving tray will automatically fall off from the retrieving chute to the conveying mechanism , the conveying mechanism conveys the received materials to the packaging machine for packaging. Such a reciprocating cycle realizes the continuous retrieving and unloading of bulk granular materials, and completes the feeding and sorting of bulk granular materials. The degree of mechanization is high, the reclaiming efficiency is greatly improved, and labor costs are greatly reduced.

2. The rotary retrieving mechanism of this application includes a rotary retrieving tray. This application sucks materials through vacuum negative pressure, sets a vacuum negative pressure chamber, and sets a number of retrieving troughs. Through the connection between the negative pressure mechanism and the vacuum negative pressure chamber, negative pressure is continuously provided, and the retrieving trough sucks the granular material into the retrieving trough, and then driven by the driving mechanism, the retrieving trough rotates along the vacuum negative pressure chamber to achieve For the purpose of reclaiming, a gas blocking plate is set in the vacuum negative pressure chamber to disconnect the connection between the reclaiming tank and the vacuum negative pressure chamber. After the connection between the reclaiming tank and the vacuum negative pressure chamber is disconnected, The retrieving trough loses the negative pressure, and the granular material leaves the retrieving chute under the action of gravity to realize discharging. This application realizes automatic retrieving and discharging of granular materials through the arrangement of the rotary reclaiming tray, the vacuum negative pressure chamber on the revolving reclaiming receptacle, the retrieving trough and the air blocking plate, which has a high degree of mechanization and takes The material efficiency is greatly improved, and the labor cost is greatly reduced.

3. In this application, two methods can be used for the negative pressure taking part and the vacuum negative pressure part. One is to separate the two, and the negative pressure taking part and the vacuum negative pressure part are separated, and the There is relative rotation between the material taking part and the vacuum negative pressure part, and the driving mechanism drives the negative pressure material taking part to rotate around the vacuum negative pressure part. The plate can be the arc surface of a certain arc section of the vacuum negative pressure part, that is, the closed section of the vacuum negative pressure chamber, which can realize disconnecting the connection between the retrieving tank and the vacuum negative pressure chamber, until the material retrieving tank is rotated to the blocking position. In the arc section of the air plate, the negative pressure is lost, and the material leaves the reclaiming chute. The automatic pick-and-place of materials has been realized.

4. Another way is that the negative pressure feeding part and the vacuum negative pressure part are fixedly connected or integrally formed; the whole rotating feeding tray rotates under the drive of the driving mechanism, and in this way, the air blocking plate is a separate Parts, which move relative to the rotary reclaiming tray, that is to say, the air blocking plate is fixed to block the connection between the retrieving trough and the vacuum negative pressure chamber at a certain position on the rotating retrieving tray, and the unconnected position is Fixed, when the retrieving trough on the rotating retrieving tray rotates to this fixed position, the connection with the vacuum negative pressure chamber is disconnected to complete the discharging action.

5. The setting method of the air blocking plate of the present application is to disconnect the connection between the retrieving tank and the vacuum negative pressure chamber, and complete the automatic discharging action. The retrieving tank and the vacuum negative pressure chamber are connected to complete the retrieving action The automatic retrieving and discharging actions are completed by rotating the retrieving tray, which has a high degree of mechanization, less manual labor intensity, and lower labor costs.

6. In this application, the air blocking plate is arranged in the arc section between the unloading station and the reclaiming station of the rotary reclaiming tray along the rotation direction of the rotary reclaiming tray. The negative pressure mechanism does not provide negative pressure between the unloading station and the reclaiming station along the rotation direction of the rotary retrieving tray, and the power output of the negative pressure mechanism can be reduced.

7. The feeding chute of the present application is set in a round table shape, which is convenient for absorbing granular materials. The setting of the communication hole is convenient for connecting the feeding chute with the vacuum negative pressure chamber. granular material.

Description of drawings

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

Fig. 2 is the main sectional structure schematic diagram of the rotary reclaiming mechanism of the present invention;

Fig. 3 is a side-sectional structural schematic diagram of the rotary reclaiming mechanism of the present invention;

Fig. 4 is the schematic diagram of the main sectional structure of another structure of the rotary reclaiming mechanism of the present invention;

Fig. 5 is a side sectional structural schematic diagram shown in Fig. 4 of the present invention;

Reference signs: 1. Rotary retrieving tray, 2. Vacuum negative pressure part, 3. Negative pressure retrieving part, 4. Vacuum negative pressure chamber, 5. Retrieving trough, 6. Air blocking plate, 7. Rotary shaft, 8. Connecting hole, 9. Collecting bin, 10. Driving mechanism, 11. Negative pressure mechanism, 12. Reclaiming station, 13. Unloading station, 14. Conveying mechanism.

Detailed ways

Example 1

As a preferred embodiment of the present application, with reference to accompanying drawing 1 of the description, this embodiment discloses:

The feeding and sorting device for bulk granular material packaging includes a collection bin 9, a rotary reclaiming mechanism and a conveying mechanism 14, and the rotating reclaiming mechanism includes a rotary reclaiming tray 1, a driving mechanism 10 and a negative pressure mechanism 11. The outer circumference of the rotary retrieving tray 1 is provided with a retrieving station 12 and a blanking station 13, and the collection bin 9 is arranged at the retrieving station 12, corresponding to the rotary retrieving tray 1; The conveying mechanism 14 is located below the rotary retrieving tray 1, corresponding to the unloading station 13, the negative pressure mechanism 11 provides negative pressure for the rotary retrieving tray 1, and the driving mechanism 10 drives the rotary retrieving tray 1 to rotate. Under the action of the negative pressure mechanism 11, the rotary retrieving tray 1 sucks the materials in the collection bin 9 from the reclaiming station 12, and under the action of the driving mechanism 10, the sucked materials are transported to the unloading station 13; The blanking station 13 is provided with an air blocking plate 6, the air blocking plate 6 is used to cut off the negative pressure supply of the negative pressure mechanism 11 to the rotary retrieving tray 1, and the material falls from the rotary retrieving tray 1 into the delivery mechanism 14.

Example 2

As another preferred embodiment of the present application, with reference to Figures 1 and 2 of the description, this embodiment discloses:

The feeding and sorting device for bulk granular material packaging includes a collection bin 9, a rotary reclaiming mechanism and a conveying mechanism 14, and the rotating reclaiming mechanism includes a rotary reclaiming tray 1, a driving mechanism 10 and a negative pressure mechanism 11. The outer circumference of the rotary retrieving tray 1 is provided with a retrieving station 12 and a blanking station 13, and the collection bin 9 is arranged at the retrieving station 12, corresponding to the rotary retrieving tray 1; The conveying mechanism 14 is located below the rotary retrieving tray 1, corresponding to the unloading station 13, the negative pressure mechanism 11 provides negative pressure for the rotary retrieving tray 1, and the driving mechanism 10 drives the rotary retrieving tray 1 to rotate. Under the action of the negative pressure mechanism 11, the rotary retrieving tray 1 sucks the materials in the collection bin 9 from the reclaiming station 12, and under the action of the driving mechanism 10, the sucked materials are transported to the unloading station 13; The blanking station 13 is provided with an air blocking plate 6, the air blocking plate 6 is used to cut off the negative pressure supply of the negative pressure mechanism 11 to the rotary retrieving tray 1, and the material falls from the rotary retrieving tray 1 into the delivery mechanism 14. Along the rotation direction of the rotary retrieving tray 1 , an air blocking plate 6 is arranged on the rotary retrieving tray 1 between the unloading station 13 and the reclaiming station 12 .

As shown in Figure 1, on the rotary retrieving tray 1, the part of the retrieving trough 5 connected to the vacuum negative pressure chamber 4 is used to absorb the material. After the material is sucked, the retrieving trough 5 rotates. When the air plate 6 is in position, the connection between the retrieving trough 5 and the vacuum negative pressure chamber 4 is disconnected, and the granular material falls off from the retrieving trough 5, realizing the automatic retrieving and discharging of the granular material, and the amount of retrieving material can be controlled. According to the particle size of the granular material, the size of the feeding tank 5 and the negative pressure power of the negative pressure mechanism 11, the feeding tank 5 is adapted to the particle size of the material, and the amount of material to be taken at one time is determined. One can be taken at a time. , you can also take more than one tablet at a time.

As shown in Figure 2, the negative pressure retrieving part 3 is connected with the vacuum negative pressure part 2 as a whole, the rotary retrieving tray 1 is connected with the frame through the rotating shaft 7, and the connection between the rotating retrieving tray 1 and the rotating shaft 7 Relative rotation occurs between them, and the drive mechanism 10 drives the rotary reclaimer 1 to rotate around the rotation axis 7 . A rotary seal is arranged between the rotary retrieving tray 1 and the rotary shaft 7 to ensure the negative pressure supply of the vacuum negative pressure chamber 4. The rotary shaft 7 can be set as a hollow structure, and the negative pressure mechanism 11 communicates with the hollow cavity of the rotary shaft 7. The hollow cavity of the rotating shaft 7 communicates with the vacuum negative pressure chamber 4 , so that the negative pressure mechanism 11 provides negative pressure for the vacuum negative pressure chamber 4 .

As shown in Figures 2 and 3, the air blocking plate 6 is arranged as a separate component, the air blocking plate 6 is located inside the vacuum negative pressure chamber 4, the rotating shaft 7 extends into the vacuum negative pressure chamber 4, and the air blocking plate 6 It is fan-shaped, one end of the air blocking plate 6 is fixed on the rotating shaft 7, and the other end is in contact with the circumferential surface of the vacuum negative pressure part 2, and is used to disconnect the material taking tank 5 and the vacuum negative pressure chamber 4 in a certain arc segment connectivity. As shown in Figure 2, the air blocking plate 6 is arranged on the circular arc section between the loading and unloading station 13 and the reclaiming station 12 along the rotation direction of the rotary retrieving tray 1 of the vacuum negative pressure chamber 4 of the rotary retrieving tray 1 In the arc section, the communication hole 8 between the retrieving trough 5 and the vacuum negative pressure chamber 4 is blocked, so that when the retrieving trough 5 rotates to the arc section, the negative pressure is lost, and the material automatically falls off and taken Feed trough 5. As shown in FIG. 2 and FIG. 3 , the retrieving tank 5 is in the shape of a truncated cone, and the inner side of the retrieving tank 5 communicates with the vacuum negative pressure chamber 4 through a communication hole 8 . In an embodiment, the driving mechanism 10 that drives the rotary retrieving tray 1 to rotate may be a motor, and a driven gear is arranged on one side of the rotary retrieving tray 1, and a driving gear is arranged on the driving motor, and the driving gear and the driven gear mesh. , to drive the rotary retrieving tray 1 to rotate, while the rotary retrieving tray 1 and the rotating shaft 7 rotate relatively. In this embodiment, the negative pressure mechanism 11 is a vacuum pump, or other equipment capable of providing negative pressure.

Example 3

As another preferred embodiment of the present application, with reference to Figures 1 and 2 of the description, this embodiment discloses:

The feeding and sorting device for bulk granular material packaging includes a collection bin 9, a rotary reclaiming mechanism and a conveying mechanism 14, and the rotating reclaiming mechanism includes a rotary reclaiming tray 1, a driving mechanism 10 and a negative pressure mechanism 11. The outer circumference of the rotary retrieving tray 1 is provided with a retrieving station 12 and a blanking station 13, and the collection bin 9 is arranged at the retrieving station 12, corresponding to the rotary retrieving tray 1; The conveying mechanism 14 is located below the rotary retrieving tray 1, corresponding to the unloading station 13, the negative pressure mechanism 11 provides negative pressure for the rotary retrieving tray 1, and the driving mechanism 10 drives the rotary retrieving tray 1 to rotate. Under the action of the negative pressure mechanism 11, the rotary retrieving tray 1 sucks the materials in the collection bin 9 from the reclaiming station 12, and under the action of the driving mechanism 10, the sucked materials are transported to the unloading station 13; The blanking station 13 is provided with an air blocking plate 6, the air blocking plate 6 is used to cut off the negative pressure supply of the negative pressure mechanism 11 to the rotary retrieving tray 1, and the material falls from the rotary retrieving tray 1 into the delivery mechanism 14. Along the rotation direction of the rotary retrieving tray 1 , an air blocking plate 6 is arranged on the rotary retrieving tray 1 between the unloading station 13 and the reclaiming station 12 . As shown in Figure 1, on the rotary retrieving tray 1, the part of the retrieving trough 5 connected to the vacuum negative pressure chamber 4 is used to absorb the material. After the material is sucked, the retrieving trough 5 rotates. When the air plate 6 is in position, the connection between the retrieving trough 5 and the vacuum negative pressure chamber 4 is disconnected, and the granular material falls off from the retrieving trough 5, realizing the automatic retrieving and discharging of the granular material, and the amount of retrieving material can be controlled. According to the particle size of the granular material, the size of the feeding tank 5 and the negative pressure power of the negative pressure mechanism 11, the feeding tank 5 is adapted to the particle size of the material, and the amount of material to be taken at one time is determined. One can be taken at a time. , you can also take more than one tablet at a time.

As shown in Figure 4, the negative pressure taking part 3 and the vacuum negative pressure part 2 are two relatively independent parts, and relative rotation occurs between the negative pressure taking part 3 and the vacuum negative pressure part 2, and the driving mechanism 10 Drive the negative pressure retrieving part 3 to rotate around the vacuum negative pressure part 2; the retrieving groove 5 on the negative pressure retrieving part 3 rotates into a certain arc section blocked by the air blocking plate 6 on the vacuum negative pressure part 2, and takes The communication between the hopper 5 and the vacuum negative pressure chamber 4 is disconnected.

As shown in Figure 5, the vacuum negative pressure part 2 is fixed on the frame, and the driving mechanism 10 drives the negative pressure material taking part 3 to rotate, and relative rotation occurs between the negative pressure material taking part 3 and the vacuum negative pressure part 2. The mechanism 10 drives the negative pressure retrieving part 3 to rotate around the vacuum negative pressure part 2; The communication between the material taking tank 5 and the vacuum negative pressure chamber 4 is disconnected. As shown in FIG. 4 , the air blocking plate 6 can be a section of closed plate on the circumferential surface of the vacuum negative pressure part 2 , that is, to block a section of the circumferential surface of the vacuum negative pressure part 2 . As shown in Figure 3, the air blocking plate 6 can also be a separate part fixed in the vacuum negative pressure chamber 4, and the position is fixed on the rotation of the vacuum negative pressure chamber 4 of the rotary retrieving tray 1 along the rotation of the rotary retrieving tray 1. In the arc section between the loading and unloading station 13 and the reclaiming station 12 in the direction. As shown in Figure 5, when the driving mechanism 10 drives the negative pressure feeding part 3 to rotate, a circle of toothed belt or rack can be set outside the negative pressure feeding part 3, and the driving mechanism 10 adopts a driving motor, and a driving motor is arranged on the driving motor. The gears, the driving gear and the driven gear are meshed to drive the negative pressure retrieving part 3 to rotate, and the negative pressure retrieving part 3 and the vacuum negative pressure part 2 rotate relatively. In this embodiment, the negative pressure mechanism 11 is a vacuum pump, or other equipment capable of providing negative pressure.

Claims (10)

1. A feeding and sorting device for bulk granular material packaging, characterized in that it includes a collection bin (9), a rotating reclaiming mechanism and a conveying mechanism (14), and the rotating reclaiming mechanism includes a rotating retrieving tray (1 ), a driving mechanism (10) and a negative pressure mechanism (11), the outer circumference of the rotary reclaiming tray (1) is provided with a reclaiming station (12) and a feeding station (13), the collection The warehouse (9) is set at the reclaiming station (12), corresponding to the rotary reclaiming tray (1); the conveying mechanism (14) is located under the revolving retrieving tray (1), and is connected to the unloading station ( 13) Correspondingly, the negative pressure mechanism (11) provides negative pressure for the rotary retrieving tray (1), and the driving mechanism (10) drives the rotary retrieving tray (1) to rotate, under the action of the negative pressure mechanism (11) Next, rotate the retrieving tray (1) to suck out the material in the collecting bin (9) from the reclaiming station (12), and under the action of the driving mechanism (10), transport the sucked material to the unloading station (13); the blanking station (13) is provided with an air blocking plate, and the air blocking plate is used to cut off the negative pressure supply of the negative pressure mechanism (11) to the rotary retrieving tray (1), and the material It falls from the rotary retrieving tray (1) onto the conveying mechanism (14). 2. The feeding and sorting device for bulk granular material packaging according to claim 1, characterized in that: along the rotation direction of the rotating retrieving tray (1), from the unloading station (13) to the reclaiming station An air blocking plate (6) is arranged on the rotary retrieving tray (1) between (12). 3. The feeding and sorting device for bulk granular material packaging according to claim 1 or 2, characterized in that: the rotary retrieving tray (1) includes a vacuum negative pressure part (2) and a negative pressure retrieving part (3), the vacuum negative pressure part (2) is provided with a vacuum negative pressure chamber (4), and the vacuum negative pressure chamber (4) is connected with the negative pressure mechanism (11); the negative pressure feeding part The inner wall of (3) is in contact with the outer circumferential surface of the vacuum negative pressure part (2), and there are several feeding grooves (5) arranged on the negative pressure feeding part (3), and the feeding grooves (5) are connected with the vacuum negative pressure part (2). The vacuum negative pressure cavity (4) of the pressure part (2) is connected; the air blocking plate (6) is arranged in the vacuum negative pressure part (2), and the air blocking plate (6) is used to block a certain circle The connection between the retrieving trough (5) in the arc section and the vacuum negative pressure chamber (4). 4. The feeding and sorting device for bulk granular material packaging according to claim 3, characterized in that: relative rotation occurs between the negative pressure feeding part (3) and the vacuum negative pressure part (2), so that The driving mechanism (10) drives the negative pressure retrieving part (3) to rotate around the vacuum negative pressure part (2); the retrieving tank (5) on the negative pressure retrieving part (3) rotates to the vacuum negative pressure part (2) In a certain circular arc section blocked by the upper blocking air plate (6), the communication between the feeding chute (5) and the vacuum negative pressure chamber (4) is disconnected. 5. The feeding and sorting device for bulk granular material packaging according to claim 3, characterized in that: the negative pressure feeding part (3) is connected with the vacuum negative pressure part (2) as a whole, and the rotating The retrieving tray (1) is connected to the frame through the rotating shaft (7), and relative rotation occurs between the rotating retrieving tray (1) and the rotating shaft (7), and the driving mechanism (10) drives the rotating retrieving tray (1 ) around the axis of rotation (7). 6. The feeding and sorting device for bulk granular material packaging according to claim 5, characterized in that: the air blocking plate (6) is located inside the vacuum negative pressure chamber (4), and the rotating shaft (7) extends into Inside the vacuum negative pressure chamber (4), the air blocking plate (6) is fan-shaped. One end of the air blocking plate (6) is fixed on the rotating shaft (7), and the other end is in contact with the circumferential surface of the vacuum negative pressure part (2). To disconnect the connection between the retrieving trough (5) and the vacuum negative pressure chamber (4) within a certain arc section. 7. The feeding and sorting device for bulk granular material packaging according to any one of claims 4-6, characterized in that: the air blocking plate (6) is arranged along the direction of rotation of the rotating retrieving tray (1) In the circular arc segment between the blanking station (13) of the rotary reclaiming tray (1) on the top and the reclaiming station (12). 8. The feeding and sorting device for bulk granular material packaging according to any one of claims 4-6, characterized in that: the feeding trough (5) is in the shape of a circular platform, and the inner side of the feeding chute (5) It communicates with the vacuum negative pressure chamber (4) through the communication hole (8). 9. The feeding and sorting device for bulk granular material packaging according to any one of claims 1-2 or 4-6, characterized in that: the driving mechanism (10) is a driving motor. 10. The feeding arrangement device for bulk granular material packaging according to any one of claims 1-2 or 4-6, characterized in that: the negative pressure mechanism (11) is a vacuum pump.