A gravity separation air classification control system

Abstract

The application discloses a specific gravity screening and winnowing control system, which comprises a fan air direction adjusting device arranged in the air duct; the fan air direction adjusting device comprises an air adjusting plate, a first angle actuator, a shaft sleeve, a supporting seat and an adjusting shaft, and the output end of the first angle actuator is fixedly connected with the adjusting shaft; the application further comprises a fan air leakage adjusting device arranged on the air duct; the fan air leakage adjusting device comprises an air leakage opening, an air leakage plate, a rotating shaft and a second angle actuator; and the application further comprises a specific gravity impurity adjusting device arranged at the impurity removing opening; the positive effect of the application is that: through the arranged fan air direction adjusting device, the angle of the air adjusting plate can be determined according to the specific gravity of the grain and the impurity removing amount of the impurity removing opening; the controller sends an action signal to the first angle actuator, the angle actuator drives the air adjusting plate to rotate by a certain angle, the effect of adjusting the air volume is realized, and the angle of the air adjusting plate is manually adjusted, which is relatively convenient.

Description

Technical Field

[0001] This application relates to the field of grain machinery technology, and in particular to a gravity screening and air separation control system. Background Technology

[0002] The outlet of the gravity fan duct of our company's current gravity screening device faces directly downwards from the gravity sorting table to remove impurities. Since the gravity screening device sorts a wide variety of grains, customers have found that when sorting lighter grains, the amount of impurities removed is too large, meaning that many usable grains are contained in the impurities, resulting in waste. If the fan power is reduced directly, it will not be able to remove impurities effectively for heavier grains. This problem needs to be solved.

[0003] Among existing patents, our company's earlier patent 202410421400.3, entitled "A Compound Sorting Machine," discloses a device including a frame, a machine frame, a gravity sieving device, and a horizontal air sieving device. The horizontal air sieving device is located above the gravity sieving device. The gravity sieving device includes a gravity chamber, a gravity fan and a fan motor, a gravity sorting table, and an eccentric vibration device. The eccentric vibration device includes an eccentric drive motor, an eccentric wheel, an auxiliary support rod, and an eccentric connecting rod. One end of the eccentric connecting rod and the auxiliary support rod is equipped with a rubber sleeve and a nylon shaft. The horizontal air sieving device includes a screen body, a feed hopper, a auger-type material dispersing device, a dust removal hood, a dust collector, and a dust removal fan. However, the airflow from the gravity fan cannot be adjusted, making it unsuitable for removing impurities from grain seeds with significant quality differences, and thus requiring improvement. Utility Model Content

[0004] The purpose of this application is to provide a gravity screening and air separation control system, which improves the air volume leading to the gravity screening table and the impurity removal capacity of the impurity removal port, making it suitable for grain screening with large quality differences and reducing waste.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] The gravity screening machine includes a frame, a product receiving hopper installed at the higher end of the frame, a gravity sorting table inclined above the frame, a feed hopper installed above the gravity sorting table, an eccentric drive mechanism installed between the frame and the gravity sorting table, a finished product discharge nozzle fixedly connected to the head of the gravity sorting table and located above the product receiving hopper, a removal port located at the tail of the gravity sorting table, and a removal hopper fixedly connected to the removal port; the eccentric drive mechanism is driven by an eccentric drive motor; a gravity fan driven by a gravity motor is installed on the frame; the air generated by the gravity fan is directed to the area below the gravity sorting table through an air duct;

[0007] A gravity separation and air classification control system includes a fan direction adjustment device disposed in the air duct; the fan direction adjustment device includes an air regulating plate that is perpendicular to and rotatably connected to the length direction of the air duct and a first angle actuator for controlling the angle of the air regulating plate.

[0008] Furthermore, a bushing is fixedly installed on the side wall of the air duct, and a support base is installed on the side of the air duct opposite to the side wall where the bushing is installed. The first angle actuator is fixedly installed on the support base, and an adjusting shaft is fixedly installed on the air regulating plate. The two ends of the adjusting shaft are rotatably connected to the support base and the bushing, respectively. The output end of the first angle actuator is fixedly connected to the adjusting shaft.

[0009] Furthermore, it also includes a fan exhaust adjustment device installed on the air duct; when the air volume below the specific gravity separation platform is too large and affects the air separation effect, the excess air is discharged from the air duct through the fan exhaust adjustment device.

[0010] Furthermore, the fan exhaust adjustment device includes an exhaust port located on the side of the air duct, an exhaust plate for adjusting the exhaust size of the exhaust port, a rotating shaft fixedly connected to the exhaust plate, and a second angle actuator drivenly connected to the rotating shaft; the rotating shaft is rotatably connected to the side wall of the air duct where the exhaust port is located.

[0011] Furthermore, the fan exhaust adjustment device also includes a second bushing disposed on the side wall of the air duct and a second support seat disposed opposite to the second bushing on the other side wall of the air duct; the rotating shaft is rotatably connected to the second bushing and the second support seat respectively; the second angle actuator is fixedly connected to the second support seat.

[0012] Furthermore, it also includes a specific gravity impurity discharge adjustment device provided at the impurity removal port, the specific gravity impurity discharge adjustment device being used to adjust the amount of impurities discharged from the impurity removal port.

[0013] Furthermore, the specific gravity impurity removal adjustment device includes a third angle actuator and an impurity removal baffle that is drivenly connected to the third angle actuator. A third support seat is provided on the side wall of the impurity removal port, and a second shaft is rotatably connected inside the third support seat. The impurity removal baffle is fixedly connected to the second shaft.

[0014] Furthermore, it also includes a PLC controller, which is signal-connected to the first angle actuator, the second angle actuator, and the third angle actuator, respectively.

[0015] The positive effects of this application are:

[0016] This application, through the installation of a fan direction adjustment device, allows the angle of the air regulating plate to be determined based on the specific gravity of the grain and the amount of impurities removed from the impurity removal port. The angle is set on the touch screen, and the controller sends an action signal to the first angle actuator. The angle actuator drives the air regulating plate to rotate a certain angle, thereby adjusting the air volume. This replaces the original manual adjustment of the air regulating plate angle, which is more convenient.

[0017] By adjusting the air venting device of the blower, the size of the air vent 31 can be adjusted according to the average specific gravity (density) of the grain and the grain air separation standard via the second angle actuator 33. This avoids waste caused by a large amount of qualified grain being mixed with impurities due to some lighter grains. The controller simultaneously activates the first angle actuator 112 and the second angle actuator 33 to air separate the grain, making it suitable for a wider range of grain varieties. This avoids the need for multiple sorting devices to handle the air separation of multiple grain varieties, reducing investment.

[0018] The specific gravity impurity removal adjustment device 7 can be used to adjust the amount of impurities discharged from the impurity removal port 8, thus avoiding waste. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this application;

[0020] Figure 2 This is a schematic diagram of the fan's airflow direction adjustment device;

[0021] Figure 3 This is a schematic diagram of the fan's airflow direction adjustment device with the air regulating plate in the closed state;

[0022] Figure 4 This is a schematic front view of the fan exhaust regulating device;

[0023] Figure 5 This is a top sectional view of the fan's air leakage regulating device;

[0024] Figure 6 This is a schematic front view of the specific gravity impurity removal adjustment device;

[0025] Figure 7 for Figure 6 Sectional view at point AA;

[0026] Figure 8 A circuit diagram illustrating the PLC control principle;

[0027] Figure 9 This is a schematic diagram illustrating the working principle of an angle actuator.

[0028] In the picture:

[0029] 1-Specific gravity motor, 2-Specific gravity fan;

[0030] 3-Fan venting adjustment device, 31-Ventilation port, 32-Ventilation plate, 33-Second angle actuator, 34-Second shaft sleeve, 35-Second support seat, 36-Rotating shaft;

[0031] 4-Eccentric drive motor, 5-Frame, 6-Impure collection bucket;

[0032] 7-Specific gravity impurity removal adjustment device, 71-Third angle actuator, 72-Second shaft, 73-Third support seat, 74-Impurity removal baffle;

[0033] 8-Impurity removal port, 9-Eccentric drive mechanism, 10-Feed hopper;

[0034] 11-Fan air direction adjustment device, 111-Air duct, 112-First angle actuator, 113-Support base, 114-Adjusting shaft, 115-Air regulating plate, 116-Shaft sleeve;

[0035] 12-Specific gravity sorting table, 13-Finished product discharge nozzle, 14-Product receiving hopper. Detailed Implementation

[0036] Example 1

[0037] like Figure 1 As shown,

[0038] The gravity screening machine includes a frame 5, a product receiving hopper 14 installed at the higher end of the frame 5, a gravity sorting table 12 inclined above the frame 1, a feed hopper 10 installed above the gravity sorting table 1, an eccentric drive mechanism 9 installed between the frame 1 and the gravity sorting table 12, a finished product discharge nozzle 13 fixedly connected to the head of the gravity sorting table 12 and located above the product receiving hopper 14, a removal port 8 located at the tail of the gravity sorting table 12, and a removal hopper 6 fixedly connected to the removal port 8; the eccentric drive mechanism 9 is driven by an eccentric drive motor 4; a gravity fan 2 driven by a gravity motor 1 is installed on the frame 5; the air generated by the gravity fan 2 is directed to the area below the gravity sorting table 12 through an air duct 111; the detailed structure of the gravity screening machine has been disclosed in our company's early patents and will not be described in detail here.

[0039] like Figure 2 , Figure 3 as well as Figure 8-9 As shown,

[0040] A gravity sieving and air separation control system includes a fan direction adjustment device 11 disposed in the air duct 111; the fan direction adjustment device 11 includes an air regulating plate 115 that is perpendicular to and rotatably connected to the length direction of the air duct 111 and a first angle actuator 112 for controlling the angle of the air regulating plate 115.

[0041] A bushing 116 is fixedly installed on the side wall of the air duct 111, and a support base 113 is installed on the side opposite to the side wall of the air duct 111 where the bushing 116 is installed. The first angle actuator 112 is fixedly installed on the support base 113. An adjusting shaft 114 is fixedly installed on the air regulating plate 115. The two ends of the adjusting shaft 114 are rotatably connected to the support base 113 and the bushing 116, respectively. The output end of the first angle actuator 112 is fixedly connected to the adjusting shaft 114.

[0042] The detailed structure is as follows: the bushing 116 and the support base 113 are fixed to the side wall of the air duct 111 by bolts, nuts, or welding; the bushing 116 and the support base 113 are equipped with bearing bushes that are rotatably connected to the adjusting shaft 114. The first angle actuator 112 is connected to the PLC controller; the frame 5 is equipped with a touch screen that is connected to the PLC controller, and the operator can control the action of the first angle actuator 112 through the touch screen and the controller.

[0043] Reference to the working wiring principle of the first angle actuator 112 Figure 9 PLC controller working principle reference Figure 8 .

[0044] The working process for this application is as follows:

[0045] Based on the specific gravity of the grain, the angle of the air regulating plate 115 is determined by observing the amount of impurities removed by the impurity removal port 8. The angle is set on the touch screen, and the controller sends an action signal to the first angle actuator 112. The angle actuator 112 drives the air regulating plate 115 to rotate a certain angle, thereby adjusting the air volume. This replaces the original manual adjustment of the angle of the air regulating plate 115, which is more convenient.

[0046] Example 2

[0047] The difference between this embodiment and Embodiment 1 is that:

[0048] like Figure 4-5 As shown,

[0049] When the air volume below the gravity separation table 12 is too large and affects the air separation effect, a fan exhaust adjustment device 3 needs to be installed on the air duct 111 to discharge excess air from the air duct 111.

[0050] The blower air leakage adjustment device 3 includes an air leakage port 31 located on the side of the air duct 111, an air leakage plate 32 for adjusting the air leakage size of the air leakage port 31, a rotating shaft 36 fixedly connected to the air leakage plate 32, and a second angle actuator 33 pulsatorically connected to the rotating shaft 36; the rotating shaft 36 is rotatably connected to the side wall of the air duct 111 where the air leakage port 31 is located. The air leakage plate 32 can cover the air leakage port 31, preventing air leakage from affecting the air separation effect when air leakage is not needed.

[0051] The fan exhaust regulating device 3 also includes a second bushing 34 disposed on the side wall of the air duct 111 and a second support seat 35 disposed opposite to the second bushing 34 on the other side wall of the air duct 111; the rotating shaft 36 is rotatably connected to the second bushing 34 and the second support seat 35 respectively; the second angle actuator 33 is fixedly connected to the second support seat 35.

[0052] Based on the average specific gravity (density) of the grain and the standards for grain air separation, the size of the air vent 31 is adjusted by the second angle actuator 33 to prevent waste caused by a large amount of qualified grain being contained in the impurities due to some lighter grains.

[0053] The controller simultaneously activates the first angle actuator 112 and the second angle actuator 33 to air-separate grains, making it suitable for a wider range of grain varieties. This avoids the need for multiple sorting devices to handle the air separation of various grain varieties, thus reducing investment.

[0054] Example 3

[0055] The difference between this embodiment and Embodiment 1 is that:

[0056] like Figure 6-9 As shown,

[0057] It also includes a specific gravity discharge adjustment device 7 provided in the impurity removal port 8, which is used to adjust the discharge amount of the impurity removal port 8.

[0058] The specific gravity impurity removal adjustment device 7 includes a third angle actuator 71 and an impurity removal baffle 74 that is drivenly connected to the third angle actuator 71. A third support seat 73 is provided on the side wall of the impurity removal port 8. A second shaft 72 is rotatably connected inside the third support seat 73. The impurity removal baffle 74 is fixedly connected to the second shaft 72.

[0059] It also includes a PLC controller, which is connected to the first angle actuator 112, the second angle actuator 33 and the third angle actuator 71 respectively.

[0060] The working process of this embodiment,

[0061] By adjusting the rotation angle of the discharge baffle 74 of the specific gravity discharge adjustment device 7, the height of the discharge baffle 74 is adjusted, thereby controlling the amount of discharge from the specific gravity table. The principle of the third angle actuator 71 is the same as that of the first angle actuator in Embodiment 1.

[0062] The above-described embodiments are detailed and specific, illustrating preferred embodiments of this application. They are merely illustrative of the technical ideas and features of this application, intended to enable those skilled in the art to understand and implement the content of this application. However, they are not limited to this application, and the patent scope of this application should not be limited by these embodiments alone. Any equivalent changes or modifications made to the spirit disclosed in this application, without departing from the structure of this application, including local improvements within the system and alterations or transformations between subsystems, are still within the patent scope of this application. Currently, the technical solution of this application has undergone pilot testing, i.e., small-scale experiments before large-scale mass production. After the pilot testing, user surveys were conducted on a small scale, and the survey results showed high user satisfaction. Preparations are now underway for the formal production and industrialization of the product, including intellectual property risk warning surveys.

Claims

1. A gravity screening and air separation control system, the gravity screening machine comprising a frame (5), a product receiving hopper (14) installed at the higher end of the frame (5), a gravity sorting table (12) inclined above the frame (1), a feed hopper (10) installed above the gravity sorting table (12), an eccentric drive mechanism (9) installed between the frame (1) and the gravity sorting table (12), a finished product discharge nozzle (13) fixedly connected to the head of the gravity sorting table (12) and located above the product receiving hopper (14), a removal port (8) provided at the tail of the gravity sorting table (12), and a removal receiving hopper (6) fixedly connected to the removal port (8); the eccentric drive mechanism (9) is driven by an eccentric drive motor (4); a gravity fan (2) driven by a gravity motor (1) is installed on the frame (5); the air generated by the gravity fan (2) is directed to the area below the gravity sorting table (12) through an air duct (111); characterized in that, It includes a fan air direction adjustment device (11) installed in the air duct (111); the fan air direction adjustment device (11) includes an air regulating plate (115) that is perpendicular to and rotatably connected to the length direction of the air duct (111) and a first angle actuator (112) for controlling the angle of the air regulating plate (115).

2. A control system for a gravity separation and air classification system according to claim 1, wherein, A bushing (116) is fixedly installed on the side wall of the air duct (111). A support base (113) is installed on the side of the air duct (111) opposite to the side wall of the air duct (111) where the bushing (116) is installed. The first angle actuator (112) is fixedly installed on the support base (113). An adjusting shaft (114) is fixedly installed on the air regulating plate (115). The two ends of the adjusting shaft (114) are rotatably connected to the support base (113) and the bushing (116) respectively. The output end of the first angle actuator (112) is fixedly connected to the adjusting shaft (114).

3. A control system for a gravity separation and air classification system according to claim 2, wherein, It also includes a fan exhaust regulating device (3) installed on the air duct (111); when the air volume below the specific gravity sorting table (12) is too large and affects the air separation effect, the excess air is discharged from the air duct (111) through the fan exhaust regulating device (3).

4. A control system for a gravity separation and air classification system according to claim 3, wherein, The fan exhaust adjustment device (3) includes an exhaust port (31) provided on the side of the air duct (111), an exhaust plate (32) for adjusting the exhaust size of the exhaust port (31), a rotating shaft (36) fixedly connected to the exhaust plate (32), and a second angle actuator (33) drivenly connected to the rotating shaft (36); the rotating shaft (36) is rotatably connected to the side wall of the air duct (111) where the exhaust port is located.

5. A control system for a gravity separation and air classification system according to claim 4, wherein, The blower exhaust regulating device (3) further includes a second bushing (34) disposed on the side wall of the air duct (111) and a second support seat (35) disposed opposite to the second bushing (34) on the other side wall of the air duct (111); the rotating shaft (36) is rotatably connected to the second bushing (34) and the second support seat (35) respectively; the second angle actuator (33) is fixedly connected to the second support seat (35).

6. A gravity separation and air classification control system according to claim 4, characterized in that, It also includes a specific gravity discharge adjustment device (7) provided in the impurity removal port (8), which is used to adjust the discharge amount of the impurity removal port (8).

7. A gravity separation and air classification control system according to claim 6, characterized in that, The specific gravity impurity removal adjustment device (7) includes a third angle actuator (71) and an impurity removal baffle (74) that is connected to the third angle actuator (71) in a transmission. A third support seat (73) is provided on the side wall of the impurity removal port (8). A second shaft (72) is rotatably connected inside the third support seat (73). The impurity removal baffle (74) is fixedly connected to the second shaft (72).

8. A control system for a gravity separation and air classification system according to claim 7, wherein, It also includes a PLC controller, which is connected to the first angle actuator (112), the second angle actuator (33) and the third angle actuator (71) respectively.

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