Grain fine filtering device

Abstract

The utility model belongs to the technical field of grain detection equipment, and particularly relates to a grain fine filtering device which comprises a fine filtering box body, a fine filtering cavity, a fine filtering feed port and a fine filtering discharge port are arranged in the fine filtering box body, and the fine filtering feed port and the fine filtering discharge port are respectively arranged on the upper portion and the lower portion of the fine filtering cavity. A negative pressure filtering channel with the tail end communicated with the fine filtering cavity is arranged in the fine filtering box body, an air draft port of the exhaust fan is communicated with the head end of the negative pressure filtering channel, an air outlet port of the exhaust fan is communicated with the outside, and a filtering net plate capable of separating the negative pressure filtering channel end to end is arranged in the negative pressure filtering channel. A waste discharge port is formed in the negative pressure filter channel on the side, far away from the exhaust fan, of the filter screen plate. The rice dust removal device is simple in structure, reasonable in design and low in cost, impurities and dust doped in rice are adsorbed and filtered in a negative pressure adsorption mode, the adsorbed impurities and dust are prevented from flowing out through the filter screen plate, the impurities and the dust can be effectively recycled, and it is guaranteed that the external environment is not affected.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of grain detection equipment, and particularly relates to a grain fine filtering device. BACKGROUND

[0002] Rice is one of the main crops, and during rice harvesting, rice is generally collected by a harvester, but many impurities and dust are mixed in the rice during collection, so the rice needs to be decontaminated and filtered before the quality of the rice is detected. The common rice filtering equipment basically adopts a vibrating disc structure, and the impurities and dust mixed in the rice are separated out by vibration, the filtering equipment can effectively separate out the impurities and dust, but due to the vibration of the vibrating disc, the impurities and dust fly outward, which not only pollutes the detection environment, but also affects the detection accuracy of the quality of the rice. SUMMARY

[0003] The utility model discloses a kind of grain fine filtering devices, it adopts the way of negative pressure adsorption, and the impurities and dust mixed in the rice are adsorbed and filtered, and the adsorbed impurities and dust are blocked by filter screen plate and flow out, which can effectively recycle impurities and dust and ensure that external environment is not affected.

[0004] The utility model is implemented as follows:

[0005] A kind of grain fine filtering device, including fine filter box body, fine filter filter cavity is arranged in the fine filter box body, and fine filter feed inlet and fine filter discharge outlet are respectively arranged in upper and lower two parts of fine filter filter cavity, negative pressure filter channel is arranged in the fine filter box body, the first end of negative pressure filter channel is communicated with the suction port of suction fan, the air outlet port is communicated with external environment, and filter screen plate is arranged in negative pressure filter channel, and the filter screen plate can be separated negative pressure filter channel in head and tail, and exhaust port is arranged on the negative pressure filter channel away from the side of suction fan of filter screen plate.

[0006] In the above-mentioned grain fine filtering device, the negative pressure filter channel, the fine filter filter cavity and the fine filter discharge outlet form a three-way connecting channel, and the three-way connecting channel is rotatably connected with a filter roller shaft near the fine filter filter cavity, a plurality of blades are uniformly distributed on the filter roller shaft in the axial direction, and the grains in the fine filter filter cavity are driven into the three-way connecting channel by the blades through the rotation of the filter roller shaft.

[0007] In the above-mentioned grain fine filtering device, the outer wall surface of the fine filter box body is fixed with a fine filter servo motor, and one end of the filter roller shaft is drivingly connected with the output shaft of the fine filter servo motor through a coupling.

[0008] In the grain fine filtering device, the waste discharge port is located below the filter screen plate, and a waste recovery container is detachably connected to the fine filtering box outside the waste discharge port, and the waste recovery container is used for receiving the waste falling from the filter screen plate.

[0009] In the grain fine filtering device, a fixed frame is arranged on the outer wall surface of the fine filtering box, and a horizontal sliding groove is formed between the fixed frame and the fine filtering box, and the waste recovery container is horizontally and slidingly fitted in the horizontal sliding groove.

[0010] In the grain fine filtering device, the negative pressure filtering channel comprises an adsorption part, an anti-backflow part and a separation part which are sequentially communicated, the outer end of the adsorption part is downwardly arranged and communicated with the fine filtering cavity, the anti-backflow part has a highest position higher than the adsorption part and the separation part, and the air suction port of the air suction machine, the filter screen plate and the waste discharge port are arranged on the separation part.

[0011] Compared with the prior art, the utility model has the advantages of:

[0012] The utility model discloses simple structure, reasonable in design and low in cost adopts the mode of negative pressure adsorption, and the impurities and dust mixed in the rice are adsorbed and filtered, and the adsorbed impurities and dust are blocked by the filter screen plate and flow outwards, so that the impurities and dust can be effectively recovered and the external environment is not affected. DRAWINGS:

[0013] Figure 1 It is the overall perspective view of the utility model;

[0014] Figure 2 It is the overall sectional view of the utility model.

[0015] In the drawing: 1, fine filtering box;2, fine filtering cavity;3, fine filtering feed port;4, fine filtering discharge port;5, negative pressure filtering channel;6, air suction machine;7, filter screen plate;8, waste discharge port;9, filter roller shaft;10, blade;11, fine filtering servo motor;12, waste recovery container;13, fixed frame;14, adsorption part;15, anti-backflow part;16, separation part. CONCRETE IMPLEMENTATION:

[0016] The utility model will be further described in the specific embodiment, and reference is made to Figure 1 -2:

[0017] The utility model relates to a kind of grain fine filter device, including fine filter box 1, the fine filter filter cavity 2 is in the fine filter box 1, and fine filter feed inlet 3 and fine filter discharge outlet 4 are respectively opened in fine filter filter cavity 2 upper and lower two parts, fine filter box 1 is provided with the negative pressure filter channel 5 with the tail end and fine filter filter cavity 2 communication, and the first end of negative pressure filter channel 5 is communicated with the air suction port of air draught fan 6, and the air outlet port is communicated with outside, and negative pressure filter channel 5 is provided with the filter screen plate 7 that can head-to-tail separate negative pressure filter channel 5, and the negative pressure filter channel 5 on the side of filter screen plate 7 away from air draught fan 6 is provided with waste port 8.

[0018] The utility model discloses simple structure, reasonable in design and low in cost, adopt the mode of negative pressure adsorption, and the impurities and dust doped in rice are adsorbed and filtered, and the impurities and dust adsorbed are blocked by filter screen plate 7 and flow outwards, which can effectively recover the impurities and dust and ensure that the external environment is not affected.

[0019] Wherein, in order to make negative pressure filter channel 5 can effectively adsorbed filtration to grain, the negative pressure filter channel 5, fine filter filter cavity 2 and fine filter discharge outlet 4 form three bifurcations connecting channel, three bifurcations connecting channel is rotatably connected with filter roller shaft 9 near fine filter filter cavity 2, and a plurality of blades 10 are evenly distributed on filter roller shaft 9, i.e. by filter roller shaft 9 rotation through blade 10 drive the grain in fine filter filter cavity 2 into three bifurcations connecting channel, and then make grain can enter three bifurcations connecting channel in batch mode, to ensure that the negative pressure airflow in negative pressure filter channel 5 can effectively act on each batch of grain.

[0020] Further, in order to be able to control and adjust the rotational speed of filter roller shaft 9, fine filter servo motor 11 is fixed on the outer wall surface of fine filter box 1, and one end of filter roller shaft 9 is connected with the output shaft of fine filter servo motor 11 through coupling transmission.

[0021] Meanwhile, in order to effectively recover the impurities and dust blocked at filter screen plate 7, waste port 8 is located below filter screen plate 7, and waste recovery container 12 is detachably connected to fine filter box 1 outside waste port 8, which is used to receive the waste falling from filter screen plate 7.

[0022] Further, the waste recovery container 12 can be a net bag structure fixed by a bag opening, and in the embodiment, the waste recovery container 12 is a box structure, and the specific connection structure between the waste recovery container 12 and the fine filter box 1 is that a fixed frame 13 is arranged on the outer wall surface of the fine filter box 1, the fixed frame 13 and the fine filter box 1 form a horizontal sliding groove, and the waste recovery container 12 is horizontally slidably fitted in the horizontal sliding groove.

[0023] In addition, in order to prevent impurities and dust from flowing back into the fine filter filter cavity 2 in the non-negative pressure state, the negative pressure filter channel 5 comprises an adsorption part 14, an anti-backflow part 15 and a separation part 16 which are sequentially communicated, the outer end of the adsorption part 14 is arranged downward and communicated with the fine filter filter cavity 2, the anti-backflow part 15 has a highest extreme position which is higher than the adsorption part 14 and the separation part 16 in horizontal height, and the air suction port of the air suction fan 6, the filter screen plate 7 and the waste discharge port 8 are all arranged on the separation part 16.

[0024] The above embodiment is only one of the preferred embodiments of the present application, and does not limit the implementation range of the present application, so that: all equivalent changes made according to the shape, structure and principle of the present application should be covered in the protection range of the present application.

Claims

1. A grain fine filtration device, characterized by: The fine filter box (1) has a fine filter cavity (2) and a fine filter inlet (3) and a fine filter outlet (4) respectively arranged on the upper and lower parts of the fine filter cavity (2), and a negative pressure filter channel (5) is arranged in the fine filter box (1) and communicates with the fine filter cavity (2), the suction port of the air extractor (6) communicates with the head end of the negative pressure filter channel (5), the air outlet port communicates with the outside, and the filter screen plate (7) is arranged in the negative pressure filter channel (5) and separates the negative pressure filter channel (5) into two parts, and the waste discharge port (8) is arranged on the negative pressure filter channel (5) away from the air extractor (6).

2. A cereal filtering device according to claim 1, characterised in that: The negative pressure filter channel (5), the fine filter cavity (2) and the fine filter outlet (4) form a three-way connecting channel, the filter roller shaft (9) is rotatably connected to the fine filter cavity (2) near the fine filter cavity (2), and a plurality of blades (10) are arranged on the filter roller shaft (9) and arranged in the axial direction, and the filter roller shaft (9) is rotated by the filter roller shaft (9) to drive the fine filter cavity (2) to enter the three-way connecting channel.

3. A cereal filtering device according to claim 2, characterised in that: The fine filter servo motor (11) is fixed on the outer wall surface of the fine filter box (1), and the output shaft of the fine filter servo motor (11) is connected to one end of the filter roller shaft (9) through a shaft coupling.

4. A cereal filtering device according to claim 1, characterized in that: The waste discharge port (8) is located below the filter screen plate (7), and the waste recovery container (12) is detachably connected to the fine filter box (1) outside the waste discharge port (8), and the waste recovery container (12) is used to receive the waste falling from the filter screen plate (7).

5. A cereal filtering device according to claim 4, characterised in that: The outer wall surface of the fine filter box (1) is provided with a fixed frame (13), and the fixed frame (13) and the fine filter box (1) form a horizontal sliding groove, and the waste recovery container (12) is horizontally slidably fitted in the horizontal sliding groove.

6. A cereal filtering device according to claim 1 or 4, characterised in that: The negative pressure filter channel (5) comprises an adsorption part (14), a backflow prevention part (15) and a separation part (16) which are sequentially communicated, the outer end of the adsorption part (14) is arranged downward and communicates with the fine filter cavity (2), the backflow prevention part (15) has a highest extreme position with a horizontal height higher than that of the adsorption part (14) and the separation part (16), and the suction port of the air extractor (6), the filter screen plate (7) and the waste discharge port (8) are arranged on the separation part (16).

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