Feeding assembly for grain detection equipment

Abstract

The utility model discloses a feeding assembly for grain detection equipment in the field of grain detection equipment, which comprises a feeding valve and a dust collection mechanism, a section of rectangular pipe is arranged below the feeding valve, one end of the rectangular pipe close to the feeding valve is provided with a bending part, the inner wall of the bending part comprises a first inclined surface and a second inclined surface, and the first inclined surface is provided with a first through hole. The first inclined face is located above the second inclined face, the inclination directions of the first inclined face and the second inclined face are opposite, an adjusting plate which is parallel to the second inclined face and can be inserted into the rectangular pipe is arranged on the outer side of the second inclined face, and a dust suction opening is formed in the side, opposite to the adjusting plate, of the rectangular pipe and located below the adjusting plate. The dust collection mechanism is in butt joint with the dust collection opening. Grain is evenly distributed in the width direction of the rectangular pipe through the first inclined face and the second inclined face on the rectangular pipe, the grain stacking thickness is reduced, then the discharging point of the grain is made to be close to the dust suction opening through the adjusting plate, impurities can be conveniently sucked away by the dust suction mechanism, and the winnowing effect is improved.

Description

Technical Field

[0001] The utility model relates to the field of grain detection equipment, in particular to a feeding component used for grain detection equipment. 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] At present, the grain to be inspected is mainly sent to the laboratory's aggregate tank for temporary storage through a pneumatic conveying mechanism, and then the grain is sent to the subsequent screening or testing equipment through the feeding component. Since the inspected grain contains a lot of impurities, directly sending it to the screening equipment or testing equipment will reduce work efficiency. Therefore, it is usually first subjected to a wind separation when the grain enters the chute to absorb most of the light impurities. The bottom outlet of the existing aggregate tank is generally directly connected to the vertical chute, and the feeding speed is controlled by the feed valve, and the dust suction mechanism on the side of the outlet is used to absorb impurities. However, since the grain is not evenly or dispersedly dropped, the wind separation effect is not very ideal, so it is necessary to improve it. Utility Model Content

[0004] In order to overcome the shortcomings of existing grain feeding components such as poor air separation effect due to uneven material falling, the technical problem to be solved by the utility model is to provide a feeding component for grain testing equipment that can make the grain falling evenly dispersed and is conducive to air separation.

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

[0006] A feeding assembly for grain detection equipment includes a feeding valve and a dust suction mechanism arranged between the outlet below the feeding hopper and the chute, a rectangular tube is arranged between the feeding valve and the chute, a bending portion is arranged at one end of the rectangular tube close to the feeding valve, an inner wall of the bending portion includes a first inclined surface and a second inclined surface facing the feeding valve, the first inclined surface is located above the second inclined surface, and the inclination directions of the two are opposite, an adjusting plate is arranged on the outer side of the second inclined surface, which is parallel to the second inclined surface and can be inserted into the rectangular tube, a dust suction port is arranged on the side of the rectangular tube opposite to the adjusting plate, the dust suction port is located below the adjusting plate, and the dust suction mechanism is connected to the dust suction port.

[0007] Furthermore, the feed valve is a star valve.

[0008] Furthermore, the inclination angles of the first inclined surface and the second inclined surface of the bending portion are both 45-60°.

[0009] Furthermore, a socket is provided at the portion where the lower end of the second inclined surface is connected to the rectangular tube, and the adjustment plate is inserted into the rectangular tube through the socket. A strip hole is provided at the end of the adjustment plate away from the socket, and the length direction of the adjustment plate is parallel to the insertion direction of the adjustment plate. A fixing plate is provided at the upper end of the outer side of the second inclined surface, and the adjustment plate is fixed to the fixing plate by bolts passing through the strip hole.

[0010] Furthermore, the dust suction mechanism includes a dust suction pipe and a fan arranged at one end of the dust suction pipe, and the other end of the dust suction pipe is connected to the dust suction port on the rectangular tube. The dust suction pipe is a structure with a high middle and two ends inclined downward.

[0011] Furthermore, a transparent observation window is provided on the side wall of the dust suction pipe.

[0012] Furthermore, a high-pressure gas blowing nozzle connected to the dust suction pipe is provided at the highest position in the middle of the dust suction pipe.

[0013] Furthermore, a slag discharge pipe is provided below one end of the dust suction pipe close to the fan, and a gate valve is provided at the connection between the slag discharge pipe and the dust suction pipe.

[0014] The beneficial effect of the utility model is that a rectangular tube is arranged below the discharge valve, and the first inclined surface and the second inclined surface of the bent section of the rectangular tube are used to evenly distribute the grain along the width direction of the rectangular tube, thereby reducing the grain stacking thickness, and then the grain dropping point is made close to the dust suction port through the adjustment plate, so that the dust suction mechanism can absorb impurities, thereby improving the air selection effect, reducing the subsequent screening workload, and improving the grain inspection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 yes Figure 2 Enlarged view of part A.

[0018] Marked in the figure are, 1-feed valve, 2-rectangular tube, 3-bending part, 4-adjusting plate, 5-bolt, 6-dust suction pipe, 7-fan, 8-slag discharge pipe, 9-plug valve, 21-dust suction port, 22-socket, 23-fixing plate, 31-first inclined plane, 32-second inclined plane, 41-strip hole, 61-transparent observation window, 62-high-pressure gas blowing nozzle. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings.

[0020] 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.

[0021] like Figure 1 , Figure 2 As shown, the utility model is used for a feed assembly of a grain detection device, including a feed valve 1 and a dust suction mechanism arranged between the outlet below the feed hopper and the chute, a rectangular tube 2 is provided between the feed valve 1 and the chute, a bending portion 3 is provided at one end of the rectangular tube 2 close to the feed valve 1, the inner wall of the bending portion 3 includes a first inclined surface 31 and a second inclined surface 32 facing the feed valve 1, the first inclined surface 31 is located above the second inclined surface 32, and the inclination directions of the two are opposite, an adjustment plate 4 is provided on the outer side of the second inclined surface 32 which is parallel to the second inclined surface 32 and can be inserted into the rectangular tube 2, a dust suction port 21 is provided on the side of the rectangular tube 2 opposite to the adjustment plate 4, the dust suction port 21 is located below the adjustment plate 4, and the dust suction mechanism is connected to the dust suction port 21. The positional relationship between the first inclined surface 31 and the second inclined surface 32 is shown as follows Figure 2 As shown, the bearing surfaces of both are facing the feed valve 1. The thickness of the rectangular tube 2 and the size of the bending portion must be satisfied so that the grain can slide onto the second inclined surface 32 when sliding off the first inclined surface 31. The adjusting plate 4 is used to adjust the distance between its end and the dust suction port 21 according to the type of grain. When the grain particles are small, the adjusting plate 4 is extended a little inward, and when the grain particles are large, it is pulled out a little, as long as it is ensured that the grain can fall from a position close to the dust suction port 21. After the grain falls from the feed valve 1, it first collides with the first inclined surface 31 and disperses in the width direction of the first inclined surface 31, then collides with the second inclined surface 32, and the grain is dispersed again. Finally, under the guidance of the adjusting plate 4, the grain landing point is close to the dust suction port 21. In addition to dispersing the grain, the first inclined surface 31 and the second inclined surface 32 can also slow down the falling speed of the grain, thereby facilitating the dust suction mechanism to suck away most of the light impurities.

[0022] For the feed valve 1, the utility model preferably uses a star valve. The star valve can well control the feeding speed, and when the grain is accumulated between two adjacent blades of the star valve, it is dispersed in the width direction of the star valve, which is conducive to better dispersion of the subsequent grain when passing through the bending part 3. The blades of the star valve can be made of wire-clamped rubber sheets, the ends of which are flexible and wear-resistant, and can be in contact with or close to the inner wall of the star valve as much as possible, reducing grain leakage, and also preventing the grain from being crushed by the blades.

[0023] For the bending portion 3, the preferred solution of the utility model is that the first inclined surface 31 and the second inclined surface 32 of the bending portion 3 are both inclined at an angle of 45-60°. According to experiments, when facing different grains, the inclined surfaces at this angle can well meet the requirements of grain dispersion and sliding, and will not form piles. The falling speed is also suitable for the dust collection mechanism to absorb impurities.

[0024] Regarding the installation method of the adjustment plate 4, the solution adopted by the utility model is as follows: Figure 3 As shown, the lower end of the second inclined surface 32 is provided with a socket 22 at the part connected to the rectangular tube 2, and the adjusting plate 4 is inserted into the rectangular tube 2 through the socket 22. The end of the adjusting plate 4 away from the socket 22 is provided with a strip hole 41 whose length direction is parallel to the insertion direction of the adjusting plate 4. The upper end of the outer side of the second inclined surface 32 is provided with a fixing plate 23, and the adjusting plate 4 is fixed to the fixing plate 23 by a bolt 5 passing through the strip hole 41. A preferred solution is that a scale or mark can be set next to the strip hole 41, so as to facilitate the rapid adjustment of the adjusting plate 4 to the optimal position for different grains.

[0025] As for the dust suction mechanism, the scheme adopted by the utility model is that the dust suction mechanism includes a dust suction pipe 6 and a fan 7 arranged at one end of the dust suction pipe 6, and the other end of the dust suction pipe 6 is connected to the dust suction port 21 on the rectangular tube 2. The dust suction pipe 6 is a structure with a high middle and two ends inclined downward. Since the falling position of the grain is close to the dust suction port 21, it is inevitable that some grain will be sucked into the dust suction pipe 6. Therefore, the utility model specifically sets the dust suction pipe 6 to be a pointed arch shape, such as Figure 2 As shown, the food sucked into the dust suction pipe 6 will slide downward on the right slope and eventually return to the rectangular tube 2; the left slope is conducive to the impurities sliding to the bottom of the dust suction pipe 6, making it easier to collect the impurities.

[0026] Furthermore, in order to facilitate observation of whether there are impurities or grain accumulation in the dust suction pipe 6, a transparent observation window 61 is provided on the side wall of the dust suction pipe 6. In order to avoid the accumulation of grain and impurities, a high-pressure gas blowing nozzle 62 connected to the dust suction pipe 6 is provided at the highest position in the middle of the dust suction pipe 6. Two high-pressure gas blowing nozzles 62 can be provided, facing the left and right inclined surfaces respectively. After the air separation is completed, the grain and impurities on the inclined surfaces can be cleaned by high-pressure gas. In order to facilitate the absorption and discharge of impurities, a slag discharge pipe 8 is provided below the end of the dust suction pipe 6 close to the fan 7, and a gate valve 9 is provided at the connection between the slag discharge pipe 8 and the dust suction pipe 6. During air separation, the gate valve 9 is closed, so that the dust suction port 21 becomes a separate air inlet, which is convenient for the absorption of impurities; after the air separation is completed, the gate valve 9 is opened again to discharge the impurities into the slag discharge pipe 8, and then mixed with the impurities screened subsequently to calculate the impurity content of the grain.

Claims

1. A feed assembly for a grain testing device, comprising a feed valve (1) and a dust collecting mechanism arranged between an outlet below a feed hopper and a chute, characterized in that: A rectangular tube (2) is provided between the feed valve (1) and the chute, and a bent portion (3) is provided at one end of the rectangular tube (2) close to the feed valve (1). The inner wall of the bent portion (3) comprises a first inclined surface (31) and a second inclined surface (32) facing the feed valve (1), the first inclined surface (31) being located above the second inclined surface (32), and the two inclined surfaces have opposite inclination directions. An adjustment plate (4) is provided on the outer side of the second inclined surface (32) and is parallel to the second inclined surface (32) and can be inserted into the rectangular tube (2). A dust suction port (21) is provided on the side of the rectangular tube (2) opposite to the adjustment plate (4), the dust suction port (21) being located below the adjustment plate (4), and the dust suction mechanism is connected to the dust suction port (21).

2. The feeding assembly for food testing equipment according to claim 1, characterized in that: The feed valve (1) is a star valve.

3. The feeding assembly for food testing equipment according to claim 1, characterized in that: The inclination angles of the first inclined surface (31) and the second inclined surface (32) of the bending portion (3) are both 45-60°.

4. The feeding assembly for food testing equipment according to claim 1, characterized in that: A socket (22) is provided at the portion where the lower end of the second inclined surface (32) is connected to the rectangular tube (2), and the adjusting plate (4) is inserted into the rectangular tube (2) through the socket (22); an end of the adjusting plate (4) away from the socket (22) is provided with a strip hole (41) whose length direction is parallel to the insertion direction of the adjusting plate (4); a fixing plate (23) is provided at the upper end of the outer side of the second inclined surface (32), and the adjusting plate (4) is fixed to the fixing plate (23) by means of bolts (5) passing through the strip hole (41).

5. The feeding assembly for grain testing equipment according to any one of claims 1 to 4, characterized in that: The dust suction mechanism comprises a dust suction pipe (6) and a fan (7) arranged at one end of the dust suction pipe (6); the other end of the dust suction pipe (6) is connected to a dust suction port (21) on the rectangular tube (2); the dust suction pipe (6) is a structure with a high middle and two ends inclined downward.

6. The feeding assembly for food testing equipment according to claim 5, characterized in that: A transparent observation window (61) is provided on the side wall of the dust suction pipe (6).

7. The feeding assembly for food testing equipment according to claim 5, characterized in that: A high-pressure gas blowing nozzle (62) in communication with the dust suction pipe (6) is provided at the highest position in the middle of the dust suction pipe (6).

8. The feeding assembly for food testing equipment according to claim 5, characterized in that: A slag discharge pipe (8) is provided below one end of the dust suction pipe (6) close to the fan (7), and a gate valve (9) is provided at the connection between the slag discharge pipe (8) and the dust suction pipe (6).

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