Gravity grading stoning machine for grains

Abstract

The utility model discloses a grain gravity grading stoning machine which comprises a supporting frame, an installation box is arranged at the upper end of the supporting frame, a feeding pipe is arranged on the left side of the upper end of the installation box, a screening plate is arranged on the upper side of the interior of the installation box, drain outlets are formed in the right ends of the installation box respectively and located on the upper side and the lower side of the screening plate respectively, and the grain gravity grading stoning machine further comprises an adjusting mechanism. The adjusting mechanism comprises a protection box, a first airflow distribution plate, a second airflow distribution plate and ventilation openings, the protection box is arranged at the front end of the mounting box, the first airflow distribution plate is arranged in the protection box, the second airflow distribution plate is arranged on the right side in the protection box, and the ventilation openings are formed in the middles of the left ends of the first airflow distribution plate and the second airflow distribution plate correspondingly; the grain gravity grading stoning machine can replace a traditional mode of adjusting airflow intensity through a variable-frequency speed regulator, is simple in structure, relatively low in cost and easy to operate, and further improves the grain cleaning effect.

Description

Technical Field

[0001] This utility model relates to the field of grain processing technology, specifically a grain gravity grading and destoner. Background Technology

[0002] Grain gravity grading destoner can remove impurities such as stones, soil, and sand from grains. The cleaned grains are cleaner, which improves the appearance and nutritional value of the final product. For grains used for sowing, removing impurities can improve the germination rate and growth quality of seeds.

[0003] When using a grain gravity grading destoner, vibration is usually generated by a vibrating motor to filter out lighter impurities. Vibration can promote the rolling or sliding of heavy impurities down the slope, while the grains, being lighter, remain on the upper layer. Then, an airflow is generated by an air blowing device, which gently blows the grains into the interior of the guide trough. Finally, the grains are discharged through the discharge port.

[0004] While existing grain gravity grading and destoner can adjust the airflow intensity generated by the blowing equipment using a variable frequency drive (VFD), the VFD has a relatively high investment cost. Furthermore, the VFD requires multiple adjustments during installation to ensure effective regulation, and its operation demands certain skills from the user. Due to its complex structure, subsequent maintenance and inspection are also quite cumbersome. Therefore, we propose a new grain gravity grading and destoner. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a grain gravity grading and destoner that can replace the traditional method of adjusting the airflow intensity through a frequency converter. It has a simple structure, relatively low cost, is easy to use, does not require repeated debugging during installation, and is convenient for subsequent maintenance and inspection. It can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a grain gravity grading and destoner, comprising a support frame, an installation box at the upper end of the support frame, a feed pipe on the left side of the upper end of the installation box, a screening plate on the upper side inside the installation box, and a drain outlet on the right end of the installation box, the drain outlets being located on the upper and lower sides of the screening plate respectively, and also including an adjustment mechanism.

[0007] Adjustment mechanism: It includes a protective box, an airflow distribution plate one, an airflow distribution plate two, and a vent. The protective box is located at the front end of the mounting box. The protective box contains an airflow distribution plate one, and an airflow distribution plate two is located on the right side inside the protective box. Ventilation ports are located in the middle of the left ends of both the airflow distribution plate one and the airflow distribution plate two. It can replace the traditional method of adjusting the airflow intensity through a frequency converter. It has a simple structure, relatively low cost, is easy to use, does not require repeated adjustments during installation, and is convenient for subsequent maintenance and inspection.

[0008] Furthermore, it also includes a control switch assembly, which is located at the front end of the mounting box. The input end of the control switch assembly is electrically connected to an external power supply and can regulate the electrical components inside the equipment.

[0009] Furthermore, the adjustment mechanism also includes a fixed rod, a fixed seat, an adjusting seat, and a transmission rod. The fixed rods are all located on the right side inside the protective box and on the left side of the second airflow distribution plate. The fixed rods are slidably connected to the sliding holes corresponding to the front and rear sides of the lower end of the airflow distribution plate. A fixed seat is provided in the middle of the left end of the first airflow distribution plate. An adjusting seat is slidably connected to the left side of the bottom wall of the protective box. A transmission rod is rotatably connected to the upper end of the adjusting seat. The upper end of the transmission rod is rotatably connected to the left end of the fixed seat, which can adjust the position of the first airflow distribution plate.

[0010] Furthermore, a screw is rotatably connected to the lower side of the left wall of the protective box, and the adjusting seat is threadedly connected to the middle of the outer arc surface of the screw through a threaded hole provided on the lower side of its left end. A motor is provided in the middle of the left end of the protective box, and the right end of the motor output shaft is fixedly connected to the left end of the screw. The input end of the motor is electrically connected to the output end of the control switch group, which can adjust the position of the adjusting seat.

[0011] Furthermore, each of the mounting slots on the right side of the front end of the mounting box is equipped with a mounting pipe, and the connecting slot in the middle of the right end of the protective box is equipped with a connecting pipe. The front end of each mounting pipe is connected to the conveying port on the rear side of the outer arc surface of the connecting pipe. A fan is installed in the air outlet in the middle of the left end of the protective box. The input end of the fan is electrically connected to the output end of the control switch group, which can generate airflow and send the airflow into the interior of the mounting box.

[0012] Furthermore, filter screens are provided on the upper side of the rear end of the mounting box and the rear side inside the mounting tube. The rear filter screen is located on the upper side of the screening plate, which can prevent grain from entering the interior of the mounting tube or splashing out from the interior of the mounting box.

[0013] Furthermore, each of the four sliding columns is slidably connected to the sliding groove opened at the upper end of the support frame. The upper ends of the four sliding columns are fixedly connected to the lower end of the mounting box. A spring is provided between the lower end of the mounting box and the upper end of the support frame. The springs are all sleeved on the outside of the upper side of the sliding columns. A vibration motor is provided in the middle of the lower end of the mounting box. The input end of the vibration motor is electrically connected to the output end of the control switch group, which can drive the mounting box to vibrate.

[0014] Furthermore, a guide groove is provided on the rear side of the upper end of the screening plate, and a discharge port is provided in the discharge port opened on the rear side of the right end of the mounting box. The guide groove is connected to the discharge port, which plays a guiding role and facilitates the discharge of grains.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This grain gravity grading and destoner has the following advantages:

[0016] By using the combination of airflow distribution plate one and airflow distribution plate two, the airflow intensity can be adjusted according to the actual situation, replacing the traditional method of adjusting the airflow intensity through a frequency converter. The structure is simple, the cost is relatively low, it is easy to use, and there is no need to adjust it back and forth during installation. Subsequent maintenance and inspection are also more convenient. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the right side of this utility model;

[0019] Figure 3 This is a schematic diagram of the upper sectional structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the front sectional structure of the present invention;

[0021] Figure 5 This is a schematic diagram of the adjustment mechanism of this utility model.

[0022] In the diagram: 1 Support frame, 2 Mounting box, 3 Control switch group, 4 Screening plate, 5 Drain outlet, 6 Feed pipe, 7 Discharge outlet, 8 Guide groove, 9 Adjustment mechanism, 91 Protective box, 92 Fixing rod, 93 Airflow distribution plate one, 94 Airflow distribution plate two, 95 Ventilation outlet, 96 Fixing seat, 97 Adjusting seat, 98 Transmission rod, 10 Screw, 11 Motor, 12 Mounting pipe, 13 Connecting pipe, 14 Fan, 15 Sliding column, 16 Spring, 17 Vibration motor, 18 Filter screen. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5 This embodiment provides a technical solution: a grain gravity grading and destoner, including a support frame 1, an installation box 2 at the upper end of the support frame 1, a feed pipe 6 on the left side of the upper end of the installation box 2, a screening plate 4 on the upper side inside the installation box 2, and a drain outlet 5 at the right end of the installation box 2, the drain outlet 5 being located on the upper and lower sides of the screening plate 4 respectively, and also includes an adjustment mechanism 9.

[0025] Adjustment mechanism 9 includes a protective box 91, an airflow distribution plate 1 93, an airflow distribution plate 2 94, and a vent 95. The protective box 91 is located at the front end of the mounting box 2. The airflow distribution plate 1 93 is located inside the protective box 91, and the airflow distribution plate 2 94 is located on the right side inside the protective box 91. Ventilation vents 95 are respectively located in the middle of the left end of the airflow distribution plate 1 93 and the airflow distribution plate 2 94. The adjustment mechanism 9 also includes a fixing rod 92, a fixing seat 96, an adjustment seat 97, and a transmission rod 98. The fixing rods 92 are all located on the right side inside the protective box 91 and on the left side of the airflow distribution plate 2 94. The fixing rods 92 are respectively connected to the airflow distribution plate 1 93 and the airflow distribution plate 2 94. The front and rear sides of the lower end are connected by sliding holes. A fixed seat 96 is set in the middle of the left end of the airflow distribution plate 93. An adjusting seat 97 is slidably connected to the left side of the bottom wall of the protective box 91. A transmission rod 98 is rotatably connected to the upper end of the adjusting seat 97. The upper end of the transmission rod 98 is rotatably connected to the left end of the fixed seat 96. Through the cooperation of the airflow distribution plate 93 and the airflow distribution plate 94, the airflow intensity can be adjusted according to the actual situation, replacing the traditional method of adjusting the airflow intensity through a frequency converter. The structure is simple and the cost is relatively low. It is easy to use and does not require repeated debugging during installation. Subsequent maintenance and inspection are also convenient.

[0026] It also includes a control switch group 3, which is located at the front end of the mounting box 2. The input terminal of the control switch group 3 is electrically connected to an external power supply and can regulate the electrical components inside the equipment.

[0027] The protective box 91 has a screw 10 rotatably connected to the lower side of its left wall. The adjusting seat 97 is threaded to the middle of the outer arc surface of the screw 10 through a threaded hole on the lower side of its left end. The protective box 91 has a motor 11 in the middle of its left end. The right end of the output shaft of the motor 11 is fixedly connected to the left end of the screw 10. The input end of the motor 11 is electrically connected to the output end of the control switch group 3. The motor 11 starts to run when the control switch group 3 is adjusted. The output shaft of the motor 11 drives the screw 10 to rotate. During the rotation of the screw 10, the screw 10 will drive the adjusting seat 97 to move to the right through the threaded connection.

[0028] The mounting slots on the right side of the front end of the mounting box 2 are equipped with mounting pipes 12. The connecting slots in the middle of the right end of the protective box 91 are equipped with connecting pipes 13. The front ends of the mounting pipes 12 are connected to the conveying ports on the rear side of the outer arc surface of the connecting pipes 13. The air outlets in the middle of the left end of the protective box 91 are equipped with fans 14. The input end of the fans 14 is electrically connected to the output end of the control switch group 3. By controlling the control switch group 3, the fans 14 start to run. The airflow generated by the rotation of the fans 14 will be sent into the interior of the connecting pipes 13 through the protective box 91, and then the connecting pipes 13 will send the airflow into the interior of the mounting box 2 through the mounting pipes 12.

[0029] Among them, filter screens 18 are provided on the upper side of the rear end of the mounting box 2 and the rear side inside the mounting tube 12. The rear filter screen 18 is located on the upper side of the screening plate 4, which can prevent grain from entering the interior of the mounting tube 12 or splashing out from the interior of the mounting box 2.

[0030] Among them: sliding columns 15 are slidably connected in the sliding grooves opened at the upper end of the support frame 1. The upper ends of the four sliding columns 15 are fixedly connected to the lower end of the mounting box 2. Springs 16 are provided between the lower end of the mounting box 2 and the upper end of the support frame 1. The springs 16 are all sleeved on the outside of the upper side of the sliding columns 15. A vibration motor 17 is provided in the middle of the lower end of the mounting box 2. The input end of the vibration motor 17 is electrically connected to the output end of the control switch group 3. By controlling the control switch group 3, the vibration motor 17 starts to run. Vibration can promote the movement of grains on the screening plate 5, so that lighter impurities (such as chaff, weed seeds, etc.) are filtered through the screening screen 5 and fall into the bottom of the mounting box 2.

[0031] Among them: a guide groove 8 is provided on the rear side of the upper end of the screening plate 4, and a discharge port 7 is provided in the discharge port opened on the rear side of the right end of the mounting box 2. The guide groove 8 is connected to the discharge port. The grain is gently blown into the interior of the guide groove 8 by airflow, and finally the grain is discharged through the discharge port 7.

[0032] The working principle of the grain gravity grading and destoner provided by this utility model is as follows: During the operation of the grain gravity grading and destoner, the grain to be gravity graded is poured into the installation box 2 through the feed pipe 6. Then, by controlling the switch group 3, the vibration motor 17 starts running. The vibration promotes the movement of the grain on the screening plate 5, so that lighter impurities (such as chaff, weed seeds, etc.) are filtered through the screening screen 5 and fall into the bottom of the installation box 2, while heavier grains and impurities remain on the upper side of the screening screen 5. The inclined setting of the screening screen 5 helps the heavy impurities roll or slide down the incline. Under the influence of vibration, the grains remain on the upper layer because they are lighter. When the grains move to the upper right side of the screening screen 5, by controlling the switch group 3, the blower 14 starts running. The airflow generated by the rotation of the blower 14 is sent into the interior of the connecting pipe 13 through the protective box 91, and then the airflow is sent through the installation pipe by the connecting pipe 13. 12 is fed into the installation box 2, and then the grain is gently blown into the guide groove 8 by the airflow. Finally, the grain is discharged through the discharge port 7, while heavier and lighter impurities are discharged through the drain port 5. During the operation of the blower 14, when it is necessary to adjust the airflow intensity, the motor 11 starts to run by controlling the switch group 3. The output shaft of the motor 11 drives the screw 10 to rotate. During the rotation of the screw 10, the screw 10 will drive the adjusting seat 97 to move to the right through the threaded connection. During the movement of the adjusting seat 97, it will drive the fixed seat 96 to move upward through the transmission rod 98. The fixed seat 96 will drive the airflow distribution plate 93 to move upward. At this time, the overlapping gap between two horizontally adjacent vents 95 will be reduced, thereby reducing the airflow intensity. Conversely, when the overlapping gap between two horizontally adjacent vents 95 is increased, the airflow speed can be increased, thereby effectively improving the airflow intensity.

[0033] It is worth noting that the motor 11 disclosed in the above embodiments can be 5IK200A-AF, the fan 14 can be ME92252V1-000C-A99, the vibration motor 17 can be YZS-8-6, and the control switch group 10 is provided with control buttons corresponding to the motor 11, the fan 14 and the vibration motor 17 for controlling their switches.

[0034] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A grain gravity grading and destoner, comprising a support frame (1), an installation box (2) at the upper end of the support frame (1), a feed pipe (6) at the left side of the upper end of the installation box (2), a screening plate (4) at the upper side inside the installation box (2), and a drain port (5) at the right end of the installation box (2), the drain ports (5) being located on the upper and lower sides of the screening plate (4), characterized in that: It also includes an adjustment mechanism (9); Adjustment mechanism (9): It includes a protective box (91), an airflow distribution plate one (93), an airflow distribution plate two (94), and a vent (95). The protective box (91) is located at the front end of the mounting box (2). The protective box (91) is equipped with an airflow distribution plate one (93) inside. An airflow distribution plate two (94) is provided on the right side inside the protective box (91). Ventilation vents (95) are respectively provided in the middle of the left end of the airflow distribution plate one (93) and the airflow distribution plate two (94).

2. The grain gravity grading and destoner according to claim 1, characterized in that: It also includes a control switch group (3), which is located at the front end of the mounting box (2), and the input end of the control switch group (3) is electrically connected to an external power supply.

3. A grain gravity grading and destoner according to claim 2, characterized in that: The adjustment mechanism (9) further includes a fixed rod (92), a fixed seat (96), an adjustment seat (97), and a transmission rod (98). The fixed rods (92) are all located on the right side inside the protective box (91). The fixed rods (92) are all located on the left side of the second airflow distribution plate (94). The fixed rods (92) are slidably connected to the sliding holes corresponding to the front and rear sides of the lower end of the first airflow distribution plate (93). The fixed seat (96) is provided in the middle of the left end of the first airflow distribution plate (93). The adjustment seat (97) is slidably connected to the left side of the bottom wall of the protective box (91). The transmission rod (98) is rotatably connected to the upper end of the adjustment seat (97). The upper end of the transmission rod (98) is rotatably connected to the left end of the fixed seat (96).

4. A grain gravity grading and destoner according to claim 3, characterized in that: A screw (10) is rotatably connected to the lower side of the left wall of the protective box (91). The adjusting seat (97) is threaded to the middle of the outer arc surface of the screw (10) through the threaded hole provided on the lower side of its left end. A motor (11) is provided in the middle of the left end of the protective box (91). The right end of the output shaft of the motor (11) is fixedly connected to the left end of the screw (10). The input end of the motor (11) is electrically connected to the output end of the control switch group (3).

5. A grain gravity grading and destoner according to claim 2, characterized in that: The mounting slots on the right side of the front end of the mounting box (2) are equipped with mounting pipes (12), and the connecting slots in the middle of the right end of the protective box (91) are equipped with connecting pipes (13). The front ends of the mounting pipes (12) are connected to the conveying ports on the rear side of the outer arc surface of the connecting pipes (13). The air outlets in the middle of the left end of the protective box (91) are equipped with fans (14), and the input end of the fans (14) is electrically connected to the output end of the control switch group (3).

6. A grain gravity grading and destoner according to claim 5, characterized in that: A filter screen (18) is provided on the upper side of the rear end of the mounting box (2) and the rear side inside the mounting tube (12). The rear filter screen (18) is located on the upper side of the screening plate (4).

7. A grain gravity grading and destoner according to claim 2, characterized in that: Each of the four sliding columns (15) is slidably connected in the sliding groove opened at the upper end of the support frame (1). The upper ends of the four sliding columns (15) are fixedly connected to the lower end of the mounting box (2). A spring (16) is provided between the lower end of the mounting box (2) and the upper end of the support frame (1). The spring (16) is sleeved on the outside of the upper side of the sliding column (15). A vibration motor (17) is provided in the middle of the lower end of the mounting box (2). The input end of the vibration motor (17) is electrically connected to the output end of the control switch group (3).

8. A grain gravity grading and destoner according to claim 1, characterized in that: A guide groove (8) is provided on the rear side of the upper end of the screening plate (4), and a discharge port (7) is provided in the discharge port opened on the rear side of the right end of the mounting box (2). The guide groove (8) is connected to the discharge port.

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