Grain sieve shaker for detection

Abstract

The utility model discloses a grain sieve shaker for detection in the field of grain detection equipment, which comprises a fine impurity layer, an unprocessed grain sieve layer and a large impurity sieve layer which are sequentially arranged from bottom to top, the large impurity sieve layer is provided with large sieve holes, the unprocessed grain sieve layer is provided with small sieve holes, and the grain size of sieved grains is smaller than the aperture of the large sieve holes and larger than the aperture of the small sieve holes. A fine impurity outlet, an unprocessed grain outlet and a large impurity outlet are formed in the same side of the fine impurity layer, the same side of the unprocessed grain screening layer and the same side of the large impurity screening layer respectively, a large impurity opening and closing door is arranged on the large impurity screening layer, and an unprocessed grain opening and closing door is arranged on the unprocessed grain screening layer. The fine impurity layer, the unprocessed grain sieve layer and the large impurity sieve layer are arranged in an overlapped mode, separation of grains from large impurities and fine impurities can be achieved through one-time sieving, sieving efficiency is improved, meanwhile, sieving areas of the large impurity sieve layer and the unprocessed grain sieve layer and a discharging port are separated through the large impurity opening and closing door and the unprocessed grain opening and closing door, and the screening efficiency is improved. And the grains can be screened for a long time in the screening area, and the screening effect of grain impurities is ensured.

Description

Technical Field

[0001] The utility model relates to the field of grain detection equipment, in particular to a grain vibrating screen machine for detection. Background Art

[0002] Grain sampling is an important inspection work before grain enters the warehouse. Generally, the sampling system is used to randomly select grain sampling points on the grain transport vehicle, and then the sampling rod is used to extract the grain. Some of the grain is sent to the laboratory, and finally various testing instruments are used to test the impurity content, degree of perfection, moisture content and other indicators of the grain, so as to determine whether the grain meets the requirements for entering the warehouse, and it can also provide guidance for the subsequent grain impurity screening.

[0003] When testing the impurity content of grain, the tool usually used is a vibrating screen, which is a screen equipped with a vibrator. At present, single-layer screens are more commonly used. First, a large-aperture screen is used to filter out large-sized impurities such as leaves and straws, and then a small-aperture screen is used to filter out fine impurities such as dust. Although the vibrating screen used to screen grain with a single-layer screen has a simple structure and is easy to clean and maintain, it needs to transfer grain once, which is easy to cause grain to spill and is not efficient. At present, there is also a multi-layer screen structure, that is, screens with different apertures are overlapped together, and grain can be separated from large and fine impurities by screening once, but this type of vibrating screen is mainly used on large grain cleaning equipment, and in order to smoothly discharge and fully screen, the screen needs to be set at an angle, and a sufficiently long slope is required to increase the screening time, so that the grain can be separated from impurities within the time it takes to roll from one end of the screen to the other. Therefore, the current multi-layer vibrating screen cannot be directly used for grain testing. Utility Model Content

[0004] In order to overcome the above-mentioned deficiencies of the existing single-layer and multi-layer vibrating sieve machines when used for grain detection, the technical problem to be solved by the utility model is to provide a grain vibrating sieve machine for detection with a multi-layer screen structure.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] The grain vibrating screen machine for detection comprises a fine impurity layer, a raw grain screening layer and a large impurity screening layer which are arranged in sequence from bottom to top with frames on all sides, a large impurity screening area of ​​the large impurity screening layer is provided with large sieve holes, a raw grain screening area of ​​the raw grain screening layer is provided with small sieve holes, the particle size of the screened grain is smaller than the aperture of the large sieve holes and larger than the aperture of the small sieve holes, a fine impurity outlet, a raw grain outlet and a large impurity outlet are respectively arranged on the same side of the fine impurity layer, the raw grain screening layer and the large impurity screening layer, a large impurity switch door is provided on the large impurity screening layer to separate the large impurity screening area from the large impurity outlet, and a raw grain switch door is provided on the raw grain screening layer to separate the raw grain screening area from the raw grain outlet.

[0007] Furthermore, the fine impurity layer, raw grain screening layer and coarse impurity screening layer are connected together through supporting columns on all sides, the bottom of the supporting columns is connected to the base through shock-absorbing springs, and a vibration motor is provided below the bottom of the fine impurity layer.

[0008] Furthermore, the fine impurities layer, the raw grain screening layer and the coarse impurities screening layer are respectively inclined toward one side of the fine impurities outlet, the raw grain outlet and the coarse impurities outlet, and the inclination angles are all 6-8°.

[0009] Furthermore, a baffle is provided on the top of the large impurities screening layer at a side away from the large impurities outlet, and a feed port is provided on the baffle.

[0010] Furthermore, a smooth large impurity guide groove is provided between the large impurity screening area and the large impurity outlet of the large impurity screening layer, and the large impurity switch door is arranged at the connection between the large impurity screening area and the large impurity guide groove; a smooth raw grain guide groove is provided between the raw grain screening area and the raw grain outlet of the raw grain screening layer, and the raw grain switch door is arranged at the connection between the raw grain screening area and the raw grain guide groove; a fine impurity guide groove which is aligned with the large impurity guide groove and has the same structure as the fine impurity layer is provided, and the large impurity guide groove and the raw grain guide groove are biased to different sides of the vibrating screen.

[0011] Furthermore, the large miscellaneous switch door and the raw grain switch door are both flip valve plates.

[0012] Furthermore, a brush is provided below the raw grain screening layer, the brush contacts the bottom surface of the raw grain screening layer, and the length of the brush is equivalent to the width of the raw grain screening layer. The brush is connected to an external cylinder through a bracket, and the extension direction of the cylinder is parallel to the length direction of the raw grain screening layer.

[0013] Furthermore, a notch for parking a brush is provided at one end of the bottom of the raw grain screening layer away from the raw grain outlet.

[0014] The beneficial effects of the utility model are as follows: by overlapping the fine impurity layer, the raw grain screening layer and the large impurity screening layer, the grain, the large impurities and the fine impurities can be separated by one screening, thereby improving the screening efficiency; at the same time, by respectively arranging the large impurity switch door and the raw grain switch door on the large impurity screening layer and the raw grain screening layer to separate the screening area from the discharge port, the grain can be screened for a long time in the screening area, and after the screening is completed, the large impurity switch door and the raw grain switch door are opened to drain the large impurities and the grain, thereby ensuring the screening effect of the grain impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the screen layer of the utility model;

[0016] Figure 2 It is the front view of the overall structure of the utility model.

[0017] Marked in the figure are, 1-fine impurities layer, 2-raw grain screening layer, 3-large impurities screening layer, 4-support column, 5-shock-absorbing spring, 6-vibration motor, 7-brush, 8-bracket, 9-cylinder, 11-fine impurities outlet, 12-fine impurities guide groove, 21-raw grain outlet, 22-raw grain screening area, 23-raw grain switch door, 24-raw grain guide groove, 25-gap, 31-large impurities outlet, 32-large impurities screening area, 33-large impurities switch door, 34-baffle, 35-feeding port, 36-large impurities guide groove. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] It should be noted that if there are directional indication terms in the present invention, such as up, down, left, right, front, and back directions and orientation terms, they are for the purpose of facilitating the description of the relative position relationship between components, and are not for the absolute position of the related components or the position relationship between components. They are only used to explain the relative position relationship and movement of the components in a certain posture. If the specific posture changes, the directional indication will also change accordingly. If there are terms related to quantity in the present invention, such as "multiple", "multiple", "several", etc., they specifically refer to two or more.

[0020] like Figure 1 , Figure 2 As shown, the grain vibrating screen for detection of the utility model comprises a fine impurity layer 1 with frames on all sides, a raw grain screening layer 2 and a large impurity screening layer 3 which are arranged in sequence from bottom to top, a large impurity screening area 32 of the large impurity screening layer 3 is provided with large sieve holes, a raw grain screening area 22 of the raw grain screening layer 2 is provided with small sieve holes, the particle size of the screened grain is smaller than the aperture of the large sieve holes, and larger than the aperture of the small sieve holes, a fine impurity outlet 11, a raw grain outlet 21 and a large impurity outlet 31 are respectively provided on the same side of the fine impurity layer 1, the raw grain screening layer 2 and the large impurity screening layer 3, a large impurity switch door 33 is provided on the large impurity screening area 32 and the large impurity outlet 31, and a raw grain switch door 23 is provided on the raw grain screening layer 2 for isolating the raw grain screening area 22 and the raw grain outlet 21.

[0021] The use process of the utility model is as follows: before screening, the large miscellaneous switch door 33 and the raw grain switch door 23 are both closed, and then the grain mixed with impurities is placed in the large miscellaneous screening layer 3, and the vibrating screen machine is started; during the vibration process, since the large miscellaneous switch door 33 and the frame around the large miscellaneous screening layer 3 form a large miscellaneous screening area 32 closed on all sides, the grain can be screened in the large miscellaneous screening area 32 for a long time, so that the grain and fine impurities pass through the large sieve holes into the raw grain screening layer 2 below; similarly, the raw grain switch door 23 and the frame of the raw grain screening layer 2 also enclose a closed raw grain screening area 22, and after sufficient screening, the fine impurities pass through the small sieve holes into the fine impurities layer 1 below, and the grain remains on the raw grain screening layer 2; finally, the large miscellaneous switch door 33 and the raw grain switch door 23 are opened, and the large miscellaneous outlet 31 and the fine impurities outlet 11 are used to collect impurities, and the raw grain outlet 21 is used to collect grain, so that the impurity screening work of the grain is completed, which is convenient and fast.

[0022] In order to facilitate the installation of each screen layer and improve the vibration effect, the fine impurity layer 1, the raw grain screen layer 2 and the coarse impurity screen layer 3 can be connected together through supporting columns 4 on all sides, and then the bottom of the supporting column 4 is connected to the base through a shock-absorbing spring 5, and finally a vibration motor 6 is arranged below the bottom of the fine impurity layer 1.

[0023] In order to facilitate material discharge, the fine impurity layer 1, the raw grain screening layer 2 and the large impurity screening layer 3 are respectively inclined to one side of the fine impurity outlet 11, the raw grain outlet 21 and the large impurity outlet 31, and the inclination angle is 6-8°. The inclination angles of the three can be the same or different. The purpose of setting the inclination angle is to make the grain and impurities slide along the inclined surface through vibration after the screening is completed, and gather at their respective outlets for easy collection.

[0024] Since the grain may splash out of the large miscellaneous screen layer 3 due to jumping when it just enters the large miscellaneous screen layer 3 from the top of the vibrating screen machine, thereby affecting the detection result, a baffle 34 can be set on the top of the large miscellaneous screen layer 3 on the side away from the large miscellaneous outlet 31. The baffle 34 and the frame around the large miscellaneous screen layer 3 form a closed structure, leaving only a feed port 35 in the middle, which can largely prevent the grain from splashing out of the large miscellaneous screen layer 3.

[0025] Furthermore, since the fine impurity layer 1, the raw grain screening layer 2 and the large impurity screening layer 3 are arranged in an overlapping manner, in order to facilitate the collection of grain and impurities, it is necessary to guide the grain and impurities in different directions. The solution adopted by the utility model is that a smooth large impurity guide groove 36 is provided between the large impurity screening area 32 and the large impurity outlet 31 of the large impurity screening layer 3, and the large impurity switch door 33 is arranged at the connection between the large impurity screening area 32 and the large impurity guide groove 36, and a smooth raw grain guide groove 24 is provided between the raw grain screening area 22 and the raw grain outlet 21 of the raw grain screening layer 2, and the raw grain switch door 23 is arranged at the connection between the raw grain screening area 22 and the raw grain guide groove 24, and a fine impurity guide groove 12 is provided on the fine impurity layer 1, which is aligned with the large impurity guide groove 36 and has the same structure, and the large impurity guide groove 36 and the raw grain guide groove 24 are biased to different sides of the vibrating screen. In order to facilitate opening and closing of the large miscellaneous switch door 33 and the raw grain switch door 23, the large miscellaneous switch door 33 and the raw grain switch door 23 can preferably flip the valve plate.

[0026] In the actual screening process, the large impurity screen layer 3 is not prone to material jamming due to its large screen holes, but the raw grain screen layer 2 has small screen holes and often has material jamming. Therefore, in order to avoid grain or impurities getting stuck in the screen holes and affecting subsequent screening, the preferred solution of the utility model is as follows: Figure 2 As shown, a brush 7 is provided below the raw grain screen layer 2, and the brush 7 contacts the bottom surface of the raw grain screen layer 2, preferably the brush bristles are in a compressed state, and the length of the brush 7 is equivalent to the width of the raw grain screen layer 2, and the brush 7 is connected to the external cylinder 9 through a bracket 8, and the telescopic direction of the cylinder 9 is parallel to the length direction of the raw grain screen layer 2. The bristles of the brush 7 can be made of harder nylon, polyester fiber or polyethylene. When the brush 7 moves back and forth under the drive of the cylinder 9, the bristles can pass through the sieve holes on the raw grain screen layer 2 under the action of its own elastic force, thereby cleaning up the grain or impurities stuck in the sieve holes. Because the brush 7 is rigidly connected to the external structure, in order to prevent the brush 7 from affecting the vibration of the raw grain screen layer 2, a notch 25 for the brush 7 to park is provided at one end of the bottom of the raw grain screen layer 2 away from the raw grain outlet 21. When grain screening is performed, the brush 7 is located in the notch 25 and does not contact the raw grain screening layer 2, thereby not affecting the vibration of the raw grain screening layer 2. After screening is completed, the cylinder 9 is started again to clean the screen of the raw grain screening layer 2 with the brush 7.

Claims

1. A grain vibrating sieve machine for testing, characterized in that: The invention comprises a fine impurity layer (1) with a frame on all sides, a raw grain screening layer (2) and a large impurity screening layer (3) which are arranged in sequence from bottom to top, wherein a large impurity screening area (32) of the large impurity screening layer (3) is provided with a large sieve hole, and a raw grain screening area (22) of the raw grain screening layer (2) is provided with a small sieve hole, the particle size of the grain to be screened is smaller than the aperture of the large sieve hole and larger than the aperture of the small sieve hole, and a fine impurity outlet is respectively provided on the same side of the fine impurity layer (1), the raw grain screening layer (2) and the large impurity screening layer (3) The large-grain screening layer (3) is provided with a large-grain opening and closing door (33) for isolating the large-grain screening area (32) from the large-grain outlet (31); the raw-grain screening layer (2) is provided with a raw-grain opening and closing door (23) for isolating the raw-grain screening area (22) from the raw-grain outlet (21); the large-grain opening and closing door (33) and the raw-grain opening and closing door (23) are closed during the grain screening process and opened after the screening is completed; The fine impurity layer (1), the raw grain screening layer (2) and the large impurity screening layer (3) are connected together via supporting columns (4) on all sides; the bottom of the supporting columns (4) is connected to a base via a shock absorbing spring (5); a vibration motor (6) is provided below the bottom of the fine impurity layer (1); the fine impurity layer (1), the raw grain screening layer (2) and the large impurity screening layer (3) are respectively inclined towards one side of a fine impurity outlet (11), a raw grain outlet (21) and a large impurity outlet (31), and the inclination angles are all 6-8°; A smooth large impurity guide groove (36) is provided between the large impurity screening area (32) and the large impurity outlet (31) of the large impurity screening layer (3), and the large impurity switch door (33) is arranged at the connection between the large impurity screening area (32) and the large impurity guide groove (36). A smooth raw grain guide groove (24) is provided between the raw grain screening area (22) and the raw grain outlet (21) of the raw grain screening layer (2), and the raw grain switch door (23) is arranged at the connection between the raw grain screening area (22) and the raw grain guide groove (24). A fine impurity guide groove (12) aligned with the large impurity guide groove (36) and having the same structure as the fine impurity guide groove (12) is provided on the fine impurity layer (1), and the large impurity guide groove (36) and the raw grain guide groove (24) are biased to different sides of the vibrating screen.

2. The grain vibrating sieve machine for detection according to claim 1, characterized in that: A baffle (34) is provided on the top of the large impurity screening layer (3) at a side away from the large impurity outlet (31), and a feed inlet (35) is provided on the baffle (34).

3. The grain vibrating sieve machine for detection according to claim 1, characterized in that: The large miscellaneous switch door (33) and the raw grain switch door (23) are both flip valve plates.

4. The grain vibrating sieve machine for detection according to any one of claims 1 to 3, characterized in that: A brush (7) is provided below the raw grain screening layer (2), the brush (7) contacts the bottom surface of the raw grain screening layer (2), and the length of the brush (7) is equivalent to the width of the raw grain screening layer (2). The brush (7) is connected to an external cylinder (9) through a bracket (8), and the telescopic direction of the cylinder (9) is parallel to the length direction of the raw grain screening layer (2).

5. The grain vibrating sieve machine for detection according to claim 4, characterized in that: A notch (25) for parking the brush (7) is provided at one end of the bottom of the raw grain screening layer (2) away from the raw grain outlet (21).

Images