A peanut grading machine

Abstract

The invention discloses a peanut grading machine, which belongs to the technical field of peanut grading equipment. It includes a frame, a peanut feeding device, a peanut grading device and a peanut collecting device. The peanut feeding device includes a feeding trough, a suspension arm and a driving structure. One or more discharge ports are provided on the rear side wall of the feeding trough. The peanut grading device includes a peanut grading channel and a peanut grading bar hole arranged at the lower end of the peanut grading channel. Its specific structure includes two left-right opposed grading rollers and a grading roller driving device. The grading roller driving device drives the two grading rollers to rotate in the opposite direction, so that the inner arc surface of the upper half of the two grading rollers rotates from the inside to the outside. The gap between the two combined grading rollers forms a peanut grading bar hole, and the peanut grading bar hole is composed of peanut grading bar hole segments of different widths. The peanut collecting device is arranged at the lower end of each peanut grading bar hole segment. It has the characteristics of accurate grading, strong versatility, and not easy to block the grading holes.

Description

Technical Field

[0001] The invention relates to the technical field of peanut grading equipment. Background Art

[0002] Peanut grading mainly includes peanut pod grading and peanut kernel grading. At present, there are two common peanut grading equipment, namely, vibrating screen type peanut grader and drum type peanut grader, both of which have some problems when used. The vibrating screen type peanut grader uses sieve holes of appropriate size and shape to allow peanuts of different sizes and shapes to pass through the sieve holes through vibration to complete grading. Existing problems: 1. When using a vibrating screen to grade peanut pods, small heads of peanuts often enter the sieve holes, and large heads are stuck in the sieve holes and cannot pass through. Moreover, the more the vibration is tightened, the more serious the sieve holes are blocked, and it is not easy to clean after being blocked. 2. When using a vibrating screen to grade peanut kernels, due to the large number of grades of peanut kernels, the number of vibrating screens required also increases accordingly, resulting in a large machine size, occupying a lot of space, and consuming a lot of energy. The drum type peanut grader has several porous drums, and the openings of each drum are from small to large along the direction of peanut travel. Under the action of the drum, the peanuts pass through each drum along its surface. When the peanuts are smaller than the holes, they fall into the corresponding drum and then flow into the peanut collection tank. In this way, peanuts of different sizes can be separated. Existing problems: Although the peanut pods stuck in the sieve holes are separated from the sieve holes due to their own gravity and the cleaning mechanism, the blockage problem is effectively alleviated by using the drum screen grading equipment, the existing drum screen grading peanuts have problems such as low efficiency, serious grade channeling, and unreasonable cleaning mechanism. Due to the wide variety of peanut varieties in my country, both the vibrating screen type peanut grading machine and the drum type peanut grading machine have the problem of poor versatility. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a peanut grading machine, which has the characteristics of accurate grading, strong versatility, and not easy to block the grading holes. The peanut pods, peanut kernels and other crops can be graded.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A peanut grading machine comprises a frame, a peanut feeding device, a peanut grading device and a peanut collecting device. The peanut feeding device comprises a feeding trough, a hanging arm and a driving structure. The lower end of the hanging arm is connected to the right end of the feeding trough through a rotating shaft, and the upper end of the hanging arm is connected to the frame through a rotating shaft so as to hang the right end of the feeding trough on the frame. The driving structure comprises a feeding trough driving motor and a rocker arm. The feeding trough driving motor is hinged to the left end of the feeding trough through the rocker arm so as to make the feeding trough swing left and right. More than one discharge port is provided on the rear side wall of the feeding trough; the peanut grading device comprises a peanut grading channel and a peanut grading bar hole arranged at the lower end of the peanut grading channel. Its specific structure comprises two left-right opposed grading rollers and a grading roller driving device. The front ends and rear ends of the two grading rollers are respectively fixed to the frame through a rotating connection structure. The axis lines of the two grading rollers are parallel. The two grading rollers combined together The groove formed by the inner arc surface of the upper part of the grading roller is a peanut grading channel. The grading roller driving device drives the two grading rollers to rotate in opposite directions, so that the inner arc surfaces of the upper parts of the two grading rollers rotate from the inside to the outside. The peanut grading channel is provided with a peanut conveying structure for conveying peanuts from the front end to the rear end. The front end of the peanut grading channel is arranged at the lower end of the discharge port of each feed trough for receiving the peanuts delivered from the discharge port. The gap between the two combined grading rollers forms a peanut grading bar hole. The peanut grading bar hole is composed of peanut grading bar hole segments of different widths. The width of each peanut grading bar hole segment is adapted to the particle size of each grade of peanuts in the peanut grading standard. The width of each peanut grading bar hole segment is arranged in sequence from small to large from front to back. A peanut collecting device is arranged at the lower end of each peanut grading bar hole segment for collecting peanuts of different grades dropped from each peanut grading bar hole segment.

[0006] The present invention is further improved in that:

[0007] The peanut grading channel is provided with a peanut conveying structure for conveying peanuts from the front end to the rear end: the peanut grading channel is inclined from the front to the back and from the top to the bottom.

[0008] The peanut grading channel is provided with a peanut conveying structure for conveying peanuts from the front end to the rear end: an external thread is provided on the outer surface of at least one of the two grading rollers, and the pitch of the external thread is smaller than the smallest grade peanut particle size in the peanut grading standard; when the driving device drives the two grading rollers to rotate in opposite directions, the thread pushes the peanuts in the peanut grading channel to the rear end.

[0009] The peanut collecting device comprises a peanut grading collecting trough arranged at the lower end of the peanut grading bar hole, and a peanut isolation plate is vertically arranged in the peanut collecting trough 7 to isolate the peanuts of different grades falling from each peanut grading bar hole section in the peanut grading collecting trough.

[0010] The peanut collecting device is a peanut grading collecting bag, and each peanut grading collecting bag is arranged at the lower end of each peanut grading bar hole section.

[0011] The grading roller driving device comprises: the front ends of the two grading rollers are respectively fixedly connected to the transmission gears, the two transmission gears are respectively coaxial with the respectively fixed grading rollers, the two transmission gears have the same structure and mesh with each other, so that the two grading rollers reverse at the same speed, and the two transmission gears are connected with the grading roller driving motor through gear transmission.

[0012] The radii of the two grading rollers corresponding to each peanut grading bar hole segment are the same.

[0013] The bottom wall of the feed trough in the peanut feeding device is inclined downward from front to back.

[0014] The beneficial effects of adopting the above technical solution are:

[0015] The gap between the two combined grading rollers of the present invention forms a peanut grading bar hole, and the grading roller driving device drives the two grading rollers to rotate in the opposite direction, so that the inner arc surface of the upper half of the two grading rollers rotates from the inside to the outside. During the grading process, even if the small head of the peanut enters the peanut grading bar hole and the large head is stuck on the peanut grading bar hole, the blocked peanut will be reversed back with the reverse rotation of the two grading rollers, thereby solving the problem of the peanut grading bar hole being blocked during the grading process, and it is easy to clean. The peanut grading bar hole is composed of peanut grading bar hole segments of different widths, the width of each peanut grading bar hole segment is adapted to the particle size of each grade of peanuts in the peanut grading standard, and the width of each peanut grading bar hole segment is arranged in order from small to large from front to back; the peanut grading is accurate and not easy to be graded. At the same time, since the spacing of the front end of the peanut grading bar hole segment can be adjusted to the particle size width of the smallest grade of peanut kernels in the peanut kernel grading standard, that is, the front peanut grading bar hole segment grades the peanut kernels, and the rear peanut grading bar hole segment grades the peanut pods, it has strong versatility and can be used for the grading of peanut pods, peanut kernels and other crops. The device has a simple structure, occupies a small volume and saves energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 yes Figure 1 Front view of

[0018] Figure 3 yes Figure 1 A top view of

[0019] Figure 4 yes Figure 1 Bottom view of .

[0020] In the attached drawings: 1. frame; 2. feed trough; 2-1. discharge port; 3. hanging arm; 4. feed trough drive motor; 5. rocker arm; 6. grading roller; 7. peanut grading collection trough; 7-1. peanut isolation plate.

[0021] The width of each peanut grading bar hole segment is equal to the distance between the axes of the two grading rollers minus the sum of the radii of the two grading rollers. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Depend on Figure 1-4 It can be seen from the embodiment shown that this embodiment includes a frame 1, a peanut feeding device, a peanut grading device and a peanut collecting device. The peanut feeding device includes a feed trough 2, a suspension arm 3 and a driving structure. The lower end of the suspension arm 3 is connected to the right end of the feed trough 2 through a rotating shaft, and the upper end of the suspension arm 3 is connected to the frame 1 through a rotating shaft to hang the right end of the feed trough 2 on the frame. The driving structure includes a feed trough driving motor 4 and a rocker arm 5. The feed trough driving motor 4 is hinged to the left end of the feed trough 2 through the rocker arm 5 to make the feed trough 2 swing left and right. One or more discharge ports 2-1 are provided on the rear side wall of the feed trough 2; the peanut grading device includes a peanut grading channel and a peanut grading bar hole arranged at the lower end of the peanut grading channel. Its specific structure includes two left and right opposite grading rollers 6 and a grading roller driving device. The front and rear ends of the two grading rollers 6 are respectively fixed to the frame through a rotating connection structure. The axis lines of the two grading rollers 6 are parallel. The groove formed by the inner arc surface of the upper half of the combined grading rollers 6 is a peanut grading channel. The grading roller driving device drives the two grading rollers 6 to rotate in opposite directions, so that the inner arc surfaces of the upper half of the two grading rollers 6 rotate from the inside to the outside. The peanut grading channel is provided with a peanut conveying structure for conveying peanuts from the front end to the rear end. The front end of the peanut grading channel is arranged at the lower end of the discharge port 2-1 of each feed trough 2, for receiving the peanuts delivered from the discharge port 2-1. The gap between the two combined grading rollers 6 forms a peanut grading bar hole. The peanut grading bar hole is composed of peanut grading bar hole segments of different widths. The width of each peanut grading bar hole segment is adapted to the particle size of each grade of peanuts in the peanut grading standard. The width of each peanut grading bar hole segment is arranged in sequence from small to large from front to back. A peanut collecting device is arranged at the lower end of each peanut grading bar hole segment, for collecting peanuts of different grades dropped from each peanut grading bar hole segment.

[0024] The peanut grading channel is provided with a peanut conveying structure for conveying peanuts from the front end to the rear end: the peanut grading channel is inclined from the front to the back and from the top to the bottom.

[0025] The peanut grading channel is provided with a peanut conveying structure for conveying peanuts from the front end to the rear end: an external thread is provided on the outer surface of at least one of the two grading rollers 6, and the pitch of the external thread is smaller than the smallest grade peanut particle size in the peanut grading standard. When the driving device drives the two grading rollers to rotate in opposite directions, the thread pushes the peanuts in the peanut grading channel to the rear end.

[0026] The peanut collecting device comprises a peanut grading collecting trough 7 arranged at the lower end of the peanut grading bar hole, and a peanut isolation plate 7-1 is vertically arranged in the peanut collecting trough 7 to isolate the peanuts of different grades dropped from each peanut grading bar hole section in the peanut grading collecting trough.

[0027] The peanut collecting device can also be a peanut grading collecting bag (not shown in the figure), and each peanut grading collecting bag is arranged at the lower end of each peanut grading bar hole section.

[0028] The grading roller driving device (not shown in the figure) includes: the front ends of the two grading rollers 6 are respectively fixedly connected to the transmission gears, the two transmission gears are coaxial with the respectively fixed grading rollers 6, the two transmission gears have the same structure and mesh with each other, so that the two grading rollers reverse at the same speed, and the two transmission gears are connected to the grading roller driving motor through gear transmission.

[0029] The radii of the two grading rollers 6 corresponding to each of the peanut grading strip hole segments are the same.

[0030] The bottom wall of the feeding trough 2 in the peanut feeding device is inclined downward from front to back.

[0031] Working principle:

[0032] The peanut pods or peanut kernels are placed in the feed trough 2, which is driven by the driving structure to shake, and the peanut pods or peanut kernels are uniformly fed into the peanut grading channel formed by the inner arc surface of the upper half of the two combined grading rollers 6 through the discharge port 2-1. The peanut pods or peanut kernels are driven forward by the rotation of the outer threads on the outer surfaces of the grading rollers 6. During the process of the peanut pods or peanut kernels moving forward, the grading roller driving device drives the two grading rollers 6 to rotate in the opposite direction, so that the inner arc surfaces of the upper half of the two grading rollers 6 rotate from the inside to the outside, thereby grading the peanut pods. The peanut pods or peanut kernels are turned up and down in the peanut grading channel. When the peanut pods or peanut kernels are turned over to the bottom of the peanut grading channel, the peanut pods or peanut kernels with a particle size smaller than their width are selected by the peanut grading bar hole segment and fall down, and enter the peanut collecting device of this level, thereby completing the grading of the peanut pods or peanut kernels and separating the peanuts of each level. The length of the peanut grading bar hole segment is preferably such that the peanut pods or peanut kernels can be fully turned over in the corresponding peanut grading channel, so that the peanut pods or peanut kernels can be graded accurately without skipping levels.

Claims

1. A peanut grading machine, characterized by: The peanut feeding device comprises a frame (1), a peanut feeding device, a peanut grading device and a peanut collecting device. The peanut feeding device comprises a feeding trough (2), a suspension arm (3) and a driving structure. The lower end of the suspension arm (3) is connected to the right end of the feeding trough (2) via a rotating shaft. The upper end of the suspension arm (3) is connected to the frame (1) via a rotating shaft so that the right end of the feeding trough (2) is suspended on the frame. The driving structure comprises a feeding trough driving motor (4) and a rocker arm (5). The feeding trough driving motor (4) is driven by the rocker arm (5). ) is hinged to the left end of the feed trough (2) so that the feed trough (2) can swing left and right, and more than two discharge ports (2-1) are arranged on the rear side wall of the feed trough (2); the peanut grading device comprises a peanut grading channel and a peanut grading bar hole arranged at the lower end of the peanut grading channel, and its specific structure comprises two left and right opposite grading rollers (6) and a grading roller driving device, the front ends and rear ends of the two grading rollers (6) are respectively fixed to the frame through a rotating connection structure, and the axis of the two grading rollers (6) is The two grading rollers (6) are parallel to each other in line, the groove formed by the inner arc surface of the upper part of the two grading rollers (6) combined together is a peanut grading channel, the grading roller driving device drives the two grading rollers (6) to rotate in opposite directions, so that the inner arc surface of the upper part of the two grading rollers (6) rotates from the inside to the outside, the peanut grading channel is provided with a peanut conveying structure for conveying peanuts from the front end to the rear end, the front end of the peanut grading channel is arranged at the lower end of the discharge port (2-1) of each of the feed troughs (2), and is used to receive the peanuts delivered from the discharge port (2-1), the gap between the two grading rollers (6) combined together forms a peanut grading bar hole, the peanut grading bar hole is composed of peanut grading bar hole segments of different widths, the width of each of the peanut grading bar hole segments is adapted to the particle size of each grade of peanuts in the peanut grading standard, and the width of each of the peanut grading bar hole segments is arranged in order from small to large from front to back; the peanut collecting device is arranged at the lower end of each of the peanut grading bar hole segments, and is used to collect the peanuts of different grades dropped from each of the peanut grading bar hole segments; The peanut grading channel is provided with a peanut conveying structure for conveying peanuts from the front end to the rear end: the outer surface of only one grading roller (6) among the two grading rollers is provided with an external thread, and the pitch of the external thread is smaller than the smallest grade of peanut particle size in the peanut grading standard; when the driving device drives the two grading rollers to rotate in opposite directions, the thread pushes the peanuts in the peanut grading channel toward the rear end.

2. A peanut grading machine according to claim 1, characterized in that: The peanut grading channel is provided with a peanut conveying structure for conveying peanuts from the front end to the rear end: the peanut grading channel is inclined from front to back and from top to bottom.

3. A peanut grading machine according to claim 1, characterized in that: The peanut collecting device comprises a peanut grading collection trough (7) arranged at the lower end of the peanut grading bar hole, and a peanut isolation plate (7-1) is vertically arranged in the peanut grading collection trough (7) to isolate peanuts of different grades falling from each of the peanut grading bar hole sections in the peanut grading collection trough.

4. A peanut grading machine according to claim 1, characterized in that: The peanut collecting device is a peanut grading collecting bag, and each of the peanut grading collecting bags is arranged at the lower end of each of the peanut grading strip hole sections.

5. A peanut grading machine according to claim 1, characterized in that: The grading roller driving device comprises: the front ends of the two grading rollers (6) are respectively fixedly connected to a transmission gear, the two transmission gears are respectively coaxial with the respectively fixed grading rollers (6), the two transmission gears have the same structure and mesh with each other so that the two grading rollers reverse at the same speed, and the two transmission gears are connected to the grading roller driving motor through gear transmission.

6. A peanut grading machine according to claim 1, characterized in that: The radii of the two grading rollers (6) corresponding to each of the peanut grading bar hole segments are the same.

7. A peanut grading machine according to claim 1, characterized in that: The bottom wall of the feeding trough (2) in the peanut feeding device is inclined downward from front to back.

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