Grain screening mechanism for grain screening machine

Abstract

The utility model discloses a grain screening mechanism used on a grain screening machine, and belongs to the technical field of grain screening, the grain screening mechanism comprises a box body, the surface of the box body is fixedly connected with a screening assembly, the screening assembly comprises a plurality of supporting plates, a plurality of supporting springs, a plurality of screening boxes, a motor and a cam, the surface of the box body is provided with a feed opening, and the feed opening is connected with the motor. Two fans are fixedly connected to the side face of the inner wall of the box body, a plurality of vent holes are fixedly connected to the side face of the box body, a dust removal opening is fixedly connected to the other side of the box body, a connecting ring is arranged on the side face of the dust removal opening, and a dust removal filter bag is fixedly connected to the surface of the connecting ring. The air blower is arranged on the discharging port, so that air is conveniently blown to grains falling from the discharging port, impurities such as dust, shriveled grains and bran which are light in weight and small in size in the grains are conveniently blown into the dust removal filter bag through the dust removal port under the action of wind power, and the dust and the impurities are stored under the action of the dust removal filter bag.

Description

Technical Field

[0001] The utility model relates to the technical field of grain screening, and more specifically, it relates to a grain screening mechanism for a grain screening machine. Background Art

[0002] Currently in agriculture, harvesters are more commonly used for grain harvesting. However, the screening of grains by harvesters is relatively simple. After harvesting, the grains are mixed with straw, soil, dust, stones, gravel, etc. Grain screening machines are important instruments used in industries such as grain sorting, grading, and oil and grain processing, which are used to clean impurities, straw, etc. in grains.

[0003] However, most of the grain screening mechanisms on existing grain screening machines are unable to efficiently remove dust, shriveled grains, bran, and other lighter and smaller sundries generated during the screening process, which affects the quality of the grains. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the existing technology, the purpose of the present utility model is to provide a grain screening mechanism for a grain screening machine, which has the characteristic of facilitating the screening of dust, shriveled grains, bran, and other lighter and smaller sundries.

[0006] (2) Technical Solutions

[0007] To achieve the above purpose, the present utility model provides a grain screening mechanism for a grain screening machine, including a box body. A screening assembly is fixedly connected to the surface of the box body. The screening assembly includes a plurality of support plates, a plurality of support springs, a plurality of screening boxes, a motor, and a cam. A feeding port is formed on the surface of the box body. Two fans are fixedly connected to the side wall of the inner part of the box body. A plurality of ventilation holes are fixedly connected to the side of the box body. A dust removal port is fixedly connected to the other side of the box body. A connecting ring is arranged on the side of the dust removal port. A dust removal filter bag is fixedly connected to the surface of the connecting ring. Limit assemblies are respectively arranged on the upper surface and the lower surface of the dust removal port. The limit assemblies include grooves, two sliding rods, two first springs, limit blocks, and dial blocks. Two clamping grooves are formed on the surface of the connecting ring. A plurality of positioning rods are fixedly connected to the surface of the dust removal port. A plurality of positioning holes are formed on the surface of the connecting ring. A feeding port is fixedly connected to the upper surface of the screening box. A first discharge port is fixedly connected to the lower surface of the box body.

[0008] When using the grain screening mechanism for a grain screening machine with this technical solution, by setting up a fan, it is convenient to blow the grains falling from the feeding opening. Under the action of the wind force, it is convenient to blow the lighter and smaller sundries such as dust, shriveled grains, and bran in the grains into the dust removal filter bag through the dust removal opening, and the dust removal filter bag is used to store the dust and sundries.

[0009] Further, a plurality of the support plates are respectively fixedly connected to both sides of the box body, a plurality of the support springs are respectively fixedly connected to the upper surfaces of the plurality of support plates, the upper ends of the plurality of support springs are respectively fixedly connected with another support plate, the screening box is fixedly connected to the sides of the plurality of another support plates, the motor is fixedly connected to the upper surface of the screening box, and the cam is fixedly connected to one end of the output shaft of the motor.

[0010] Further, the groove is opened on the surface of the dust removal opening, two sliding rods are fixedly connected to the inner wall of the groove, two first springs are respectively sleeved on the surfaces of the two sliding rods, the limiting block is slidably connected to the surfaces of the two sliding rods, and the dialing block is fixedly connected to the upper surface of the limiting block.

[0011] Further, a sealing ring is fixedly connected to the surface of the dust removal opening.

[0012] Further, a flexible cover is fixedly connected to the upper surface of the box body, and the box body and the screening box are connected through the flexible cover.

[0013] Further, a second discharge port is fixedly connected to the side of the screening box.

[0014] (3) Beneficial effects

[0015] In summary, the present utility model has the following beneficial effects:

[0016] 1. For the grain screening mechanism for a grain screening machine, by setting up a fan, it is convenient to blow the grains falling from the feeding opening. Under the action of the wind force, it is convenient to blow the lighter and smaller sundries such as dust, shriveled grains, and bran in the grains into the dust removal filter bag through the dust removal opening, and the dust removal filter bag is used to store the dust and sundries;

[0017] 2. For the grain screening mechanism for a grain screening machine, by setting up a limiting component, the dialing block drives the limiting block to disengage from the surface of the clamping groove, so as to facilitate releasing the limit on the connecting ring and the dust removal filter bag, so as to facilitate removing the dust removal filter bag and cleaning the sundries therein. By setting a plurality of positioning rods and a plurality of positioning holes, it is convenient to position and install the connecting ring;

[0018] 3. The grain screening mechanism for the grain screening machine enables the motor to drive the cam to rotate by setting the screening component, causing the screening box to vibrate through multiple support springs, so as to screen the grain in the screening box. By setting the feeding port, it is convenient to add grain into the screening box for screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for describing the specific embodiments or the prior art. Obviously, the drawings in the following description are only one embodiment of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a front view sectional structure schematic diagram of the present invention;

[0021] Figure 2 It is a side view structure schematic diagram of the present invention;

[0022] Figure 3 It is Figure 2 the enlarged structure schematic diagram at A in

[0023] The reference numerals in the drawings are:

[0024] 1. Box body;

[0025] 2. Screening component; 201. Support plate; 202. Support spring; 203. Screening box; 204. Motor; 205. Cam;

[0026] 3. Discharge port;

[0027] 4. Fan;

[0028] 5. Ventilation hole;

[0029] 6. Dust removal port;

[0030] 7. Connecting ring;

[0031] 8. Dust removal filter bag;

[0032] 9. Limiting component; 901. Groove; 902. Slide bar; 903. First spring; 904. Limiting block; 905. Pusher block;

[0033] 10. Card slot;

[0034] 11. Positioning rod;

[0035] 12. Positioning hole;

[0036] 13. Feeding port;

[0037] 14. First discharge port;

[0038] 15. Sealing ring;

[0039] 16. Flexible cover;

[0040] 17. Second discharge port. Detailed implementation manners

[0041] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the technical solutions in the specific implementation manners of the present utility model are clearly and completely described below to further elaborate the present utility model. Obviously, the described specific implementation manners are only a part of the implementation manners of the present utility model, rather than all the styles.

[0042] Embodiment:

[0043] The following further elaborates on the present utility model in conjunction with the attached Figures 1 - 3 For a more detailed description.

[0044] Please refer to Figures 1 - 3 , the present utility model provides a technical solution: a grain screening mechanism for a grain screening machine, including a box body 1, a screening component 2 fixedly connected to the surface of the box body 1. The screening component 2 includes a plurality of support plates 201, a plurality of support springs 202, a plurality of screening boxes 203, a motor 204 and a cam 205. A feeding port 3 is opened on the surface of the box body 1. Two fans 4 are fixedly connected to the side surface of the inner wall of the box body 1. A plurality of ventilation holes 5 are fixedly connected to the side surface of the box body 1. A dust removal port 6 is fixedly connected to the other side of the box body 1. A connecting ring 7 is arranged on the side of the dust removal port 6. A dust removal filter bag 8 is fixedly connected to the surface of the connecting ring 7. Limiting components 9 are respectively arranged on the upper surface and the lower surface of the dust removal port 6. The limiting component 9 includes a groove 901, two sliding rods 902, two first springs 903, a limiting block 904 and a dial block 905. Two clamping grooves 10 are opened on the surface of the connecting ring 7. A plurality of positioning rods 11 are fixedly connected to the surface of the dust removal port 6. A plurality of positioning holes 12 are opened on the surface of the connecting ring 7. A feeding port 13 is fixedly connected to the upper surface of the screening box 203. A first discharge port 14 is fixedly connected to the lower surface of the box body 1. By arranging the fans 4, it is convenient to blow the grains falling from the feeding port 3. Under the action of the wind force, it is convenient to blow the lighter and smaller sundries such as dust, shriveled grains and bran in the grains into the dust removal filter bag 8 through the dust removal port 6, and the dust and sundries are stored under the action of the dust removal filter bag 8.

[0045] Specifically, multiple support plates 201 are respectively fixedly connected to both sides of the box body 1, multiple support springs 202 are respectively fixedly connected to the upper surfaces of the multiple support plates 201, the upper ends of the multiple support springs 202 are respectively fixedly connected to another support plate 201, the screening box 203 is fixedly connected to the sides of the multiple other support plates 201, the motor 204 is fixedly connected to the upper surface of the screening box 203, and the cam 205 is fixedly connected to one end of the output shaft of the motor 204.

[0046] By adopting the above technical solution, the motor 204 works to drive the cam 205 to rotate, so that the screening box 203 vibrates through multiple supporting springs 202, and the grain is screened under the action of the screening box 203.

[0047] Specifically, the groove 901 is opened on the surface of the dust removal port 6, the two sliding rods 902 are fixedly connected to the inner wall of the groove 901, the two first springs 903 are respectively sleeved on the surfaces of the two sliding rods 902, the limit block 904 is slidably connected to the surfaces of the two sliding rods 902, and the shift block 905 is fixedly connected to the upper surface of the limit block 904.

[0048] By adopting the above technical solution, by setting the limit block 904, it is convenient for the first spring 903 to drive the limit block 904 to be clamped on the surface of the slot 10, so as to facilitate the connection ring 7 and the dust filter bag 8 to be limited and fixed, by toggling the toggle block 905, the limit block 904 slides on the surface of the slide rod 902, thereby driving the limit block 904 to separate from the surface of the slot 10, so as to release the limit on the connection ring 7 and the dust filter bag 8, so as to remove the dust filter bag 8 and clean the debris therein, and by setting a plurality of positioning rods 11 and a plurality of positioning holes 12, it is convenient to position and install the connection ring 7.

[0049] Specifically, a sealing ring 15 is fixedly connected to the surface of the dust removal port 6 .

[0050] By adopting the above technical solution and providing the sealing ring 15 , it is convenient to seal between the connecting ring 7 and the dust removal port 6 .

[0051] Specifically, a flexible cover 16 is fixedly connected to the upper surface of the box body 1 , and the box body 1 and the screening box 203 are connected via the flexible cover 16 .

[0052] By adopting the above technical solution and providing the flexible cover 16 , it is convenient to seal the screening box 203 and the box body 1 .

[0053] Specifically, a second discharge port 17 is fixedly connected to the side of the screening box 203 .

[0054] By adopting the above technical solution and providing the second discharge port 17 , it is convenient to discharge the straw and debris in the screening box 203 .

[0055] The working principle of the present utility model is as follows: When in use, grains are added into the screening box 203 through the feeding port 13 for screening. The motor 204 works to drive the cam 205 to rotate, causing the screening box 203 to vibrate through a plurality of support springs 202. Under the action of the screening box 203, the grains are screened. The fan 4 works, and under the action of a plurality of ventilation holes 5, the grains falling from the discharge port 3 are blown. Under the action of the wind force, the lighter and smaller sundries such as dust, shriveled grains, and bran in the grains are blown into the dust removal filter bag 8 through the dust removal port 6 for storing the dust and sundries. Under the action of the first discharge port 14, the qualified grains after screening are discharged. After the screening is completed, the toggle block 905 is toggled, so that the limiting block 904 slides on the surface of the sliding rod 902, driving the limiting block 904 to disengage from the surface of the clamping groove 10, releasing the limitation on the connecting ring 7 and the dust removal filter bag 8, and the dust removal filter bag 8 is removed to clean the sundries therein. Then, under the action of the positioning rod 11 and the positioning hole 12, the connecting ring 7 is inserted onto the surface of the dust removal port 6, and the first spring 903 drives the limiting block 904 to be clamped on the surface of the clamping groove 10 to limit and fix the connecting ring 7 and the dust removal filter bag 8 for convenient reuse. Under the action of the second discharge port 17, it is convenient to discharge the straw and sundries in the screening box 203.

[0056] This specific embodiment is only an explanation of the present utility model, and it is not a limitation of the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present utility model, it is protected by the patent law.

Claims

1. A grain screening mechanism for a grain screening machine, comprising a housing (1), characterized in that: The surface of the box body (1) is fixedly connected with a screening component (2), and the screening component (2) comprises a plurality of support plates (201), a plurality of support springs (202), a plurality of screening boxes (203), a motor (204) and a cam (205). The surface of the box body (1) is provided with a feed opening (3), and the inner wall side of the box body (1) is fixedly connected with two fans (4), and the side of the box body (1) is fixedly connected with a plurality of ventilation holes (5), and the other side of the box body (1) is fixedly connected with a dust removal port (6), and a connecting ring (7) is provided on the side of the dust removal port (6), and a dust removal filter bag is fixedly connected to the surface of the connecting ring (7). (8), the upper surface and the lower surface of the dust removal port (6) are respectively provided with a limit assembly (9), the limit assembly (9) comprises a groove (901), two slide bars (902), two first springs (903), a limit block (904) and a shift block (905), the surface of the connecting ring (7) is provided with two slots (10), the surface of the dust removal port (6) is fixedly connected with a plurality of positioning rods (11), the surface of the connecting ring (7) is provided with a plurality of positioning holes (12), the upper surface of the screening box (203) is fixedly connected with a feeding port (13), and the lower surface of the box body (1) is fixedly connected with a first discharge port (14).

2. The grain screening mechanism for a grain screening machine according to claim 1, characterized in that: The plurality of support plates (201) are respectively fixedly connected to both sides of the box body (1); the plurality of support springs (202) are respectively fixedly connected to the upper surfaces of the plurality of support plates (201); the upper ends of the plurality of support springs (202) are respectively fixedly connected to another support plate (201); the screening box (203) is fixedly connected to the side surfaces of another plurality of support plates (201); the motor (204) is fixedly connected to the upper surface of the screening box (203); and the cam (205) is fixedly connected to one end of the output shaft of the motor (204).

3. The grain screening mechanism for a grain screening machine according to claim 1, characterized in that: The groove (901) is opened on the surface of the dust removal port (6), the two sliding bars (902) are fixedly connected to the inner wall of the groove (901), the two first springs (903) are respectively sleeved on the surfaces of the two sliding bars (902), the limit block (904) is slidably connected to the surfaces of the two sliding bars (902), and the shift block (905) is fixedly connected to the upper surface of the limit block (904).

4. The grain screening mechanism for a grain screening machine according to claim 1, characterized in that: A sealing ring (15) is fixedly connected to the surface of the dust removal port (6).

5. The grain screening mechanism for a grain screening machine according to claim 1, characterized in that: A flexible cover (16) is fixedly connected to the upper surface of the box body (1), and the box body (1) and the screening box (203) are connected via the flexible cover (16).

6. The grain screening mechanism for a grain screening machine according to claim 1, characterized in that: A second discharge port (17) is fixedly connected to the side of the screening box (203).

Images