Grain screening mechanism

Abstract

The utility model relates to the technical field of screening mechanisms, in particular to a screening box, a feeding port is formed in the top face of the screening box, two screening nets are movably arranged in the screening box, the number of the screening nets is different, and the number of the screening nets located on the upper portion is larger than that of the screening nets located on the lower portion. The two sides of the screening box are each provided with three taking grooves. A collecting box is movably arranged in the screening box, the two ends of the collecting box are located in the middle taking grooves correspondingly, a screening plate is fixed in the collecting box, a plurality of discharging pipes are fixedly arranged on the bottom face of the collecting box in a communicating mode, and valves and draw-off pumps are arranged in the discharging pipes; and the bottom surface of the screening box communicates with and is fixedly provided with an output pipe, through multiple times of filtering, grains are screened more meticulously, then workers can conveniently conduct grade sorting on the grains, and therefore the workers can conduct pricing selling according to grades, and the income is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of screening mechanisms, in particular to a grain screening mechanism. Background Art

[0002] Cereals cover a wide range, including rice, wheat, millet, soybeans and other grains. Cereals include rice, wheat, millet, soybeans, etc., which are mainly plant seeds and fruits. They are the traditional staple food of many Asian people. Cereals do not only refer to the seeds of Poaceae plants. To be precise, they can be roughly divided into two categories in my country.

[0003] In the prior art, a Chinese utility model with publication number CN212284800U discloses a grain screening mechanism, including a box body, fixed seats are provided on both sides of the inside of the box body, springs are provided inside the two groups of fixed seats, a screen is provided at the top of the inside of the box body, support plates are provided on both sides of the top of the screen, a vibration motor is installed at the middle position of the bottom of the screen, support blocks are provided at the bottom of the two groups of fixed seats, an exhaust fan penetrating into the inside of the box body is installed at one end of the box body, a filter is provided at one end of the exhaust fan located inside the box body, a feed hopper is provided on one side of the top of the box body, and a rotary feeding valve is installed inside the bottom of the feed hopper.

[0004] In the above technology, the grains are first poured into the feed hopper. When in use, the power is turned on to start the vibration motor, which drives the screen to vibrate. The screen is supported by springs and fixed seats to make the vibration effect of the screen better. However, when screening the grains, due to the different and uneven sizes of different grains, only one layer of screen is used for screening, and the grains cannot be screened more finely, and thus the grains cannot be graded, which reduces practicality. Utility Model Content

[0005] The purpose of the utility model is to provide a grain screening mechanism to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solutions: a screening box, wherein a feed port is provided on the top surface of the screening box, two screening nets are movably arranged inside the screening box, the mesh numbers of the screening nets are different, the mesh number of the upper screening net is larger than the mesh number of the lower screening net, and three taking slots are respectively provided on both sides of the screening box;

[0007] The two taking grooves are provided with support bars inside, the two sides of the screening net are respectively fixed to one side of the support bars, a collection box is movably provided inside the screening box, the two ends of the collection box are respectively located inside the middle taking groove, and a pull ring is respectively fixed to one side of the support bar and one side of the collection box;

[0008] A screening plate is fixed inside the collecting box, a plurality of discharge pipes are connected and fixed to the bottom of the collecting box, valves and extraction pumps are arranged inside the discharge pipes, and an output pipe is connected and fixed to the bottom of the screening box.

[0009] Preferably, a transmission block is fixed to the bottom surface of the screening net, two first vibration motors are fixed to the rear side of the screening box, the output shaft of the first vibration motor passes through one side of the screening box and extends to contact one side of the transmission block, and two second vibration motors are arranged inside the collecting box, and the output shaft of the second vibration motor is in contact with the bottom surface of the screening plate.

[0010] Preferably, sliding bars are fixed on both sides of the collecting box, sliding grooves are opened on both sides of the inner wall of the screening box, and the sliding bars and the sliding grooves are slidably arranged.

[0011] Preferably, two dust exhaust holes are opened on the top surface of the screening box, exhaust fans are fixed inside the dust exhaust holes, two collecting barrels are fixed on the top surface of the screening box, the collecting barrels correspond to the dust exhaust holes, and dustproof nets are fixed on the top surfaces of the collecting barrels.

[0012] Preferably, a funnel is fixed on the top surface of the screening box, and a cover plate is slidably provided on the top surface of the funnel.

[0013] Preferably, two perspective windows are provided on one side of the screening box, a plurality of supporting legs are fixed to the bottom surface of the screening box, and rubber pads are fixed to the bottom surfaces of the supporting legs.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the grains enter the screening box and are first screened by the screening net above, then the screened grains fall onto the screening plate for further screening, then the fine grains fall into the collecting box, then the valve in the discharge pipe is opened to allow the screened grains to fall into the screening net at the bottom again, and then the grains are screened again, then the screened grains are accumulated on the inner bottom surface of the screening box, and after screening for a certain period of time, the grains are discharged through the output pipe, so that after multiple filtrations, the grains are screened more finely, and then it is convenient for the staff to grade and sort the grains, which is beneficial for the staff to price and sell according to the grade, thereby increasing income;

[0015] During screening, vibration is generated by the first vibration motor and the second vibration motor, which can make the screening of grains smoother and avoid blockage and waste of time. When a lot of dust is generated during screening, the dust can be drawn out of the screening box by the exhaust fan, so that the dust will enter the collection bucket and then be blocked by the dustproof net, thereby intercepting the dust and avoiding air pollution, thereby facilitating subsequent centralized cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings:

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

[0018] Figure 2 It is a schematic diagram of the structural section of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the collecting box in the utility model;

[0020] Figure 4 It is a left-side structural schematic diagram of the screening box in the utility model.

[0021] In the figure: 1. screening box; 2. feed inlet; 3. screening net; 4. picking slot; 5. support bar; 6. collecting box; 7. screening plate; 8. discharge pipe; 9. output pipe; 10. transmission block; 11. first vibration motor; 12. second vibration motor; 13. sliding bar; 14. sliding slot; 15. dust exhaust hole; 16. exhaust fan; 17. collecting barrel; 18. dust net; 19. funnel; 20. cover plate; 21. perspective window; 22. support leg; 23. rubber pad. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0023] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0024] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through an intermediate structure, but are connected to form a whole only through a connecting structure. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0026] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0027] Embodiment 1

[0028] See also Figures 1 to 4 The utility model provides a technical solution: a screening box 1, a feeding port 2 is provided on the top surface of the screening box 1, two screening nets 3 are movably arranged inside the screening box 1, and the mesh numbers of the screening nets 3 are different. The mesh number of the upper screening net 3 is larger than the mesh number of the lower screening net 3, and three taking grooves 4 are respectively provided on both sides of the screening box 1; wherein the interiors of the two taking grooves 4 are provided with support bars 5, and the two sides of the screening net 3 are respectively fixed to one side of the support bars 5; a collecting box 6 is movably arranged inside the screening box 1, and the two ends of the collecting box 6 are respectively located inside the middle taking groove 4, and one side of the support bar 5 and one side of the collecting box 6 are respectively fixed with pull rings; a screening plate 7 is fixed inside the collecting box 6, and the mesh number of the screening plate 7 is smaller than the mesh number of the upper screening net 3 and larger than the mesh number of the lower screening net 3, and a plurality of discharge pipes 8 are connected and fixed to the bottom surface of the collecting box 6, and a valve and an extraction pump are arranged inside the discharge pipe 8, and an output pipe 9 is connected and fixed to the bottom surface of the screening box 1.

[0029] The grains enter the screening box 1 and are first screened by the screening net 3 above. Then the screened grains fall onto the screening plate 7 for screening again. Then the fine grains fall into the collecting box 6. Then, by opening the valve in the discharge pipe 8, the screened grains fall into the screening net 3 at the bottom again, and then the grains are screened again. Then, the screened grains are accumulated on the bottom surface of the screening box 1. After screening for a certain period of time, the grains are discharged through the output pipe 9. Therefore, after multiple filtrations, the grains are screened more finely, which makes it convenient for the staff to grade the grains, thereby facilitating the staff to price and sell them according to the grade, thereby increasing income.

[0030] Embodiment 2

[0031] On the basis of Example 1, a transmission block 10 is fixed to the bottom surface of the screening mesh 3, two first vibration motors 11 are fixed to the rear side of the screening box 1, the output shaft of the first vibration motor 11 passes through one side of the screening box 1 and extends to contact one side of the transmission block 10, two second vibration motors 12 are arranged inside the collecting box 6, the output shaft of the second vibration motor 12 contacts the bottom surface of the screening plate 7, sliding bars 13 are fixed on both sides of the collecting box 6, sliding grooves 14 are respectively opened on both sides of the inner wall of the screening box 1, and the sliding bars 13 and the sliding grooves 14 are slidably arranged.

[0032] During screening, the first vibration motor 11 and the second vibration motor 12 generate vibrations, which can make the screening of grains smoother and avoid blockage and waste of time. The sliding bar 13 and the sliding groove 14 can prevent the collection box 6 from falling off when being taken and causing the grains to scatter everywhere.

[0033] Embodiment 3

[0034] On the basis of the second embodiment, two dust exhaust holes 15 are provided on the top surface of the screening box 1, and exhaust fans 16 are fixed inside the dust exhaust holes 15. Two collecting barrels 17 are fixed on the top surface of the screening box 1, and the collecting barrels 17 correspond to the dust exhaust holes 15. A dustproof net 18 is fixed on the top surface of the collecting barrel 17. A funnel 19 is fixed on the top surface of the screening box 1, and a cover plate 20 is slidably provided on the top surface of the funnel 19. Two perspective windows 21 are provided on one side of the screening box 1, and a plurality of supporting legs 22 are fixed on the bottom surface of the screening box 1, and rubber pads 23 are fixed on the bottom surfaces of the supporting legs 22.

[0035] Dust can be drawn out from the screening box 1 by the exhaust fan 16, so that the dust will enter the collecting bucket 17, and then blocked by the dustproof net 18, so as to intercept the dust and avoid air pollution, so as to facilitate subsequent centralized cleaning. The funnel 19 can make it more stable when pouring grains to avoid grains falling, and the cover plate 20 can prevent dust leakage and diffusion. The perspective window 21 allows the staff to intuitively view the screening status, and the support legs 22 and rubber pads 23 can make the entire device more stable during screening, reducing noise and shaking.

[0036] When the utility model is in use, the staff first pours the grains into the screening box 1 through the funnel 19, and then closes the cover plate 20. The grains enter the screening box 1 and are first screened through the upper screening net 3. Then the screened grains fall onto the screening plate 7 for screening again. Then the fine grains fall into the collecting box 6. Then, by opening the valve in the discharge pipe 8, the screened grains fall into the screening net 3 at the bottom again, and then the grains are screened again. Then, the screened grains are accumulated on the inner bottom surface of the screening box 1. After screening for a certain period of time, the grains are discharged through the output pipe 9. The filtration makes the grains more finely screened, which makes it convenient for the staff to sort the grains by grade, which is beneficial for the staff to price and sell according to the grade and increase income. When screening, the first vibration motor 11 and the second vibration motor 12 generate vibration, which makes the screening of grains smoother and avoids blockage and waste of time. When a lot of dust is generated during screening, the dust can be drawn out of the screening box 1 by the exhaust fan 16, so that the dust will enter the collection bucket 17, and then blocked by the dustproof net 18, so that the dust can be intercepted to avoid air pollution, so as to facilitate subsequent centralized cleaning.

[0037] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0038] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A grain screening mechanism, comprising a screening box (1), characterized in that: The top surface of the screening box (1) is provided with a feed port (2), and two screening nets (3) are movably arranged inside the screening box (1), the mesh numbers of the screening nets (3) are different, and the mesh number of the upper screening net (3) is larger than the mesh number of the lower screening net (3), and three taking slots (4) are respectively provided on both sides of the screening box (1); wherein two of the taking grooves (4) are provided with support bars (5), the two sides of the screening net (3) are respectively fixed to one side of the support bars (5), a collecting box (6) is movably provided inside the screening box (1), the two ends of the collecting box (6) are respectively located inside the middle taking groove (4), and a pull ring is respectively fixed to one side of the support bar (5) and one side of the collecting box (6); A screening plate (7) is fixed inside the collecting box (6), a plurality of discharge pipes (8) are connected and fixed to the bottom surface of the collecting box (6), valves and extraction pumps are arranged inside the discharge pipes (8), and an output pipe (9) is connected and fixed to the bottom surface of the screening box (1).

2. A grain screening mechanism according to claim 1, characterized in that: A transmission block (10) is fixed to the bottom surface of the screening net (3); two first vibration motors (11) are fixed to the rear side of the screening box (1); the output shafts of the first vibration motors (11) pass through one side of the screening box (1) and extend to contact one side of the transmission block (10); two second vibration motors (12) are arranged inside the collecting box (6); the output shafts of the second vibration motors (12) contact the bottom surface of the screening plate (7).

3. A grain screening mechanism according to claim 1, characterized in that: Sliding bars (13) are fixed on both sides of the collecting box (6), and sliding grooves (14) are opened on both sides of the inner wall of the screening box (1), and the sliding bars (13) and the sliding grooves (14) are slidably arranged.

4. A grain screening mechanism according to claim 1, characterized in that: The top surface of the screening box (1) is provided with two dust exhaust holes (15), an exhaust fan (16) is fixed inside the dust exhaust hole (15), and two collecting barrels (17) are fixed on the top surface of the screening box (1), the collecting barrels (17) correspond to the dust exhaust holes (15), and a dustproof net (18) is fixed on the top surface of the collecting barrel (17).

5. A grain screening mechanism according to claim 1, characterized in that: A funnel (19) is fixed on the top surface of the screening box (1), and a cover plate (20) is slidably provided on the top surface of the funnel (19).

6. A grain screening mechanism according to claim 1, characterized in that: Two perspective windows (21) are provided on one side of the screening box (1); a plurality of supporting legs (22) are fixed to the bottom surface of the screening box (1); and a rubber pad (23) is fixed to the bottom surface of the supporting legs (22).

Images