Agricultural grain screening device

Abstract

The agricultural grain screening device comprises a screening machine shell, the upper surface of the screening machine shell is fixedly connected with an impurity removing shell, the right side face of the impurity removing shell is fixedly communicated with a draught fan, the upper surface of the impurity removing shell is fixedly communicated with a feeding hopper, a feeding port is formed in the upper surface of the screening machine shell, and a discharging port is formed in the lower surface of the screening machine shell. And a feeding opening is formed in the screening machine shell and communicates with the impurity removing shell, a screening net frame is fixedly installed in the screening machine shell, a vibration motor is fixedly installed on the bottom face of the screening net frame, and the front face of the screening machine shell fixedly communicates with a dust suction box through a dust suction pipe. The fan is arranged on the back face of the screening machine shell, in the grain screening process, the fan blows air to grains on the guide plate, the dust suction box is arranged on the front face of the screening machine shell, the dust suction box is matched with the screening machine shell, the negative pressure fan provides negative pressure for the dust suction box, and dust in the screening machine shell is collected; and therefore, the grains are sieved more cleanly, and the sieving effect is improved.

Description

Technical Field

[0001] This application relates to the technical field of agricultural machinery, and particularly relates to an agricultural grain screening device. Background Art

[0002] Agricultural machinery refers to various machines used in the processes of crop planting and animal husbandry, as well as in the primary processing and handling of agricultural and livestock products. Agricultural machinery includes agricultural power machinery, farmland construction machinery, soil tillage machinery, planting and fertilizing machinery, plant protection machinery, farmland irrigation and drainage machinery, crop harvesting machinery, agricultural product processing machinery, animal husbandry machinery, and agricultural transportation machinery, etc.

[0003] Cereals include rice, wheat, millet, soybeans, etc., mainly plant seeds and fruits. Among them, rice and wheat are usually regarded as fine grains, while other cereal foods belong to coarse grains. In existing agricultural technologies, impurities such as broken straws and soil blocks in the sun-dried grains need to be screened out by a screening device to improve the quality of the grains. Although existing screening devices can achieve the screening of impurities, the screening effect on relatively light straw debris or dust is not good, which affects the quality of the grains. Therefore, we propose an agricultural grain screening device. Summary of the Utility Model

[0004] The purpose of the present utility model is to provide an agricultural grain screening device to solve the problems raised in the above background art.

[0005] The embodiments of this application adopt the following technical solutions:

[0006] An agricultural grain screening device includes a screening machine housing. The upper surface of the screening machine housing is fixedly connected with a impurity removal housing. The right side surface of the impurity removal housing is fixedly communicated with a blower. The upper surface of the impurity removal housing is fixedly communicated with a feed hopper. The upper surface of the screening machine housing is provided with a feed inlet, and the feed inlet is communicated with the impurity removal housing. A screening wire rack is fixedly installed inside the screening machine housing. A vibration motor is fixedly installed on the bottom surface of the screening wire rack. The front surface of the screening machine housing is fixedly communicated with a dust suction box through a dust suction pipe. The upper surface of the dust suction box is fixedly communicated with a negative pressure blower. A filter screen is provided inside the dust suction box. A limiting plate is fixedly connected to the inner wall of the dust suction box, and the limiting plate is in contact with the filter screen. A fan is installed on the back surface of the screening machine housing.

[0007] Preferably, an air outlet is provided on the outer surface of the impurity removal housing. A blocking net is provided inside the air outlet. A baffle plate is fixedly connected to the inner wall of the impurity removal housing. The left side surface of the impurity removal housing is movably hinged with a first protective cover through a hinge.

[0008] Preferably, a second protective cover is movably hinged to the bottom surface of the dust box via a hinge, and a handle is fixedly connected to the bottom surface of the second protective cover and the left side surface of the first protective cover.

[0009] Preferably, a debris discharge port is provided on the right side surface of the screening machine housing, and the interior of the debris discharge port is fixedly connected to a debris discharge groove.

[0010] Preferably, the left side surface of the screening casing is fixedly connected to a discharge bin, and the inner wall of the screening casing is fixedly connected to a material guide plate.

[0011] Preferably, two groups of supporting feet are fixedly connected to the bottom surface of the screening machine housing, and the bottom end of each group of supporting feet is fixedly connected to a base.

[0012] Preferably, a control switch is fixedly mounted on the front of the dust collection box, and the control switch is electrically connected to the blower, the fan, the vibration motor and the negative pressure blower through wires.

[0013] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects:

[0014] Firstly, a cleaning shell is arranged on the top of the screening casing, and a fan is arranged at one end of the cleaning shell. The fan and the cleaning shell cooperate to clean the grains passing through the cleaning shell, so that the impurities in the grains enter the other side of the cleaning shell under the action of the airflow of the fan, and the grains passing through the cleaning shell enter the screening casing for screening. The screening grid frame and the vibration motor cooperate to vibrate and screen the grains. The grains pass through the screening grid frame and enter the guide plate for discharge, and the filtered grain straw is discharged at the impurity discharge port along the screening grid frame.

[0015] Secondly, a fan is arranged on the back of the screening casing. During the grain screening process, the fan is used to blow air to the grain on the guide plate. A dust box is arranged on the front of the screening casing. The dust box cooperates with the screening casing, and the negative pressure fan provides negative pressure to the dust box to collect dust in the screening casing, thereby making the grain screened more cleanly and improving the screening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 : A three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 : A schematic diagram of the front cross-section structure of the screening machine housing in the utility model;

[0019] Figure 3It is: the front sectional structure schematic diagram of the impurity removal shell in the present utility model;

[0020] Figure 4 It is: the rear sectional structure schematic diagram of the dust collection box in the present utility model.

[0021] In the figure: 1, screening machine shell; 2, impurity discharge port; 3, impurity discharge groove; 4, dust collection box; 5, control switch; 6, support feet; 7, second protective cover; 8, feed hopper; 9, fan; 10, impurity removal shell; 11, air discharge port; 12, first protective cover; 13, handle; 14, discharge bin; 15, base; 16, feed inlet; 17, vibration motor; 18, guide plate; 19, screening wire mesh frame; 20, fan; 21, baffle plate; 22, negative pressure fan; 23, filter screen; 24, limit plate. Specific embodiments

[0022] To make the objectives, technical solutions, and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0023] The technical solutions provided by the embodiments of the present application will be described in detail below in conjunction with the drawings.

[0024] Please refer to Figures 1-4 , the present utility model provides a technical solution for an agricultural grain screening device:

[0025] An agricultural grain screening device, including a screening machine housing 1, a cleaning housing 10 is fixedly connected to the upper surface of the screening machine housing 1, a blower 9 is fixedly communicated with the right side surface of the cleaning housing 10, a feed hopper 8 is fixedly communicated with the upper surface of the cleaning housing 10, a feed inlet 16 is opened on the upper surface of the screening machine housing 1, and the feed inlet 16 is communicated with the cleaning housing 10. A screening grid 19 is fixedly installed inside the screening machine housing 1, a vibration motor 17 is fixedly installed on the bottom surface of the screening grid 19, the front surface of the screening machine housing 1 is fixedly communicated with a dust suction box 4 through a dust suction pipe, a negative pressure blower 22 is fixedly communicated with the upper surface of the dust suction box 4, a filter screen 23 is arranged inside the dust suction box 4, a limiting plate 24 is fixedly connected to the inner wall of the dust suction box 4, and the limiting plate 24 is in contact with the filter screen 23. A fan 20 is installed on the back surface of the screening machine housing 1; specifically, a blower 9 is arranged on one side of the cleaning housing 10, and the blower 9 cooperates with the cleaning housing 10 to blow the light impurities in the grains, so that the light impurities fall into the other side of the cleaning housing 10 for collection, and then the preliminarily cleaned grains enter the screening machine housing 1 for sieving. The sieved grains fall on the guide plate 18 and are discharged. The straw in the grains passes through the discharge port 2 along the screening grid 19. When sieving in the screening machine housing 1, the grains on the guide plate 18 are blown again by the fan 20, and the negative pressure blower 22 on the dust suction box 4 provides a negative pressure effect, so that the negative pressure blower 22 provides suction, and the dust generated during the sieving process enters the dust suction box 4;

[0026] In this embodiment, an air outlet 11 is arranged on the outer surface of the cleaning housing 10, a blocking net is arranged inside the air outlet 11, a baffle plate 21 is fixedly connected to the inner wall of the cleaning housing 10, and a first protective cover 12 is movably hinged to the left side surface of the cleaning housing 1 through a hinge; a second protective cover 7 is movably hinged to the bottom surface of the dust suction box 4 through a hinge, and handles 13 are fixedly connected to the bottom surface of the second protective cover 7 and the left side surface of the first protective cover 12; a discharge port 2 is opened on the right side surface of the screening machine housing 1, and a discharge chute 3 is fixedly communicated with the inside of the discharge port 2; specifically, by arranging a baffle plate 21 on one side of the cleaning housing 10, the baffle plate 21 can be connected to the cleaning housing 1 through a fixing member. Opening the first protective cover 12 can clean the collected sundries, and the second protective cover 7 can open the dust suction box 4 to clean the dust suction box 4. The cooperation of the discharge port 2 and the discharge chute 3 can facilitate the discharge of the straw after sieving;

[0027] In this embodiment, a discharge bin 14 is fixedly communicated with the left side surface of the screening machine housing 1, and a guide plate 18 is fixedly connected to the inner wall of the screening machine housing 1; two groups of support feet 6 are fixedly connected to the bottom surface of the screening machine housing 1, and a base 15 is fixedly connected to the bottom end of each group of support feet 6; a control switch 5 is fixedly installed on the front surface of the dust suction box 4, and the control switch 5 is electrically connected to the blower 9, the fan 20, the vibration motor 17 and the negative pressure blower 22 through wires; specifically, the screened grains can be discharged through the discharge bin 14 by the guide plate 18, and the support feet 6 and the base 15 facilitate the support of the screening device, and the control switch 5 facilitates the control of the screening device.

[0028] Working principle: When the grain screening device is in use, the user first places the screening device at the use position through the base 15 and the support feet 6, turns on the power supply of the screening device, and puts the sun-dried grains into the screening machine housing 1 through the feed hopper 8. The grains first pass through the impurity removal housing 10. A blower 9 is arranged on one side of the impurity removal housing 10. The blower 9 cooperates with the impurity removal housing 10 to blow the light impurities in the grains, so that the light impurities fall into the other side of the impurity removal housing 10 for collection. Then the grains that have been preliminarily decontaminated enter the screening machine housing 1 for screening. The screened grains fall on the guide plate 18 and are exported. The straw in the grains passes through the discharge port 2 along the screening wire mesh frame 19. When screening in the screening machine housing 1, the grains on the guide plate 18 are blown again by the fan 20, and the negative pressure blower 22 on the dust suction box 4 provides a negative pressure effect, so that the negative pressure blower 22 provides suction, and the dust generated during the screening process enters the dust suction box 4, thereby improving the screening effect of the grains.

[0029] The above are only the embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. An agricultural grain screening device, comprising a screening machine housing (1), characterized in that: The upper surface of the screening machine housing (1) is fixedly connected with a impurity removal housing (10). The right side surface of the impurity removal housing (10) is fixedly communicated with a blower (9). The upper surface of the impurity removal housing (10) is fixedly communicated with a feed hopper (8). The upper surface of the screening machine housing (1) is provided with a feed inlet (16), and the feed inlet (16) is communicated with the impurity removal housing (10). Inside the screening machine housing (1), a screening wire mesh frame (19) is fixedly installed. The bottom surface of the screening wire mesh frame (19) is fixedly installed with a vibration motor (17). The front surface of the screening machine housing (1) is fixedly communicated with a dust collection box (4) through a dust suction pipe. The upper surface of the dust collection box (4) is fixedly communicated with a negative pressure blower (22). Inside the dust collection box (4), there is a filter screen (23). The inner wall of the dust collection box (4) is fixedly connected with a limiting plate (24), and the limiting plate (24) is in contact with the filter screen (23). A fan (20) is installed on the back surface of the screening machine housing (1).

2. The agricultural grain screening device according to claim 1, characterized in that: The outer surface of the impurity removal housing (10) is provided with an air outlet (11). Inside the air outlet (11), there is a blocking net. The inner wall of the impurity removal housing (10) is fixedly connected with a baffle plate (21). The left side surface of the impurity removal housing (10) is movably hinged with a first protective cover (12) through a hinge.

3. The agricultural grain screening device according to claim 1, characterized in that: The bottom surface of the dust collection box (4) is movably hinged with a second protective cover (7) through a hinge. Handles (13) are fixedly connected to the bottom surface of the second protective cover (7) and the left side surface of the first protective cover (12).

4. An agricultural grain screening device according to claim 1, characterized in that: A waste discharge port (2) is opened on the right side surface of the screening machine housing (1), and a waste discharge groove (3) is fixedly communicated inside the waste discharge port (2).

5. An agricultural grain screening device according to claim 1, characterized in that: A discharge bin (14) is fixedly communicated with the left side surface of the screening machine housing (1), and a guide plate (18) is fixedly connected to the inner wall of the screening machine housing (1).

6. The agricultural grain screening device according to claim 1, characterized in that: Two groups of support feet (6) are fixedly connected to the bottom surface of the screening machine housing (1), and a base (15) is fixedly connected to the bottom end of each group of support feet (6).

7. An agricultural grain screening device according to claim 1, characterized in that: A control switch (5) is fixedly installed on the front surface of the dust collection box (4), and the control switch (5) is electrically connected to the blower (9), the fan (20), the vibration motor (17), and the negative pressure blower (22) through wires.

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