Screening device for rice processing

Abstract

The invention provides a screening device for rice processing, and relates to the technical field of rice processing equipment. The upper end of the side wall of one end of the screening machine box is of an outwards-protruding structure, the top of the outwards-protruding part is provided with an unhulled rice feeding port with the wide upper portion and the narrow lower portion, the unhulled rice feeding port communicates with an inner cavity of the screening machine box, and a horizontal stock bin supporting plate is fixedly arranged in the inner cavity, below the unhulled rice feeding port, of the screening machine box. A separating tongue plate is arranged at the edge of the inner end of the stock bin supporting plate, and a hinged shaft is arranged at the end, close to the stock bin supporting plate, of the separating tongue plate and rotationally connected into the screening machine box; and a feeding shaft is transversely and rotationally mounted at the position, deviating to the separating tongue plate, above the stock bin supporting plate. The rice is easily added into the screening machine box through the rice adding opening and falls on the stock bin supporting plate. After the motor is started, the feeding shaft rotates, and the feeding chute on the feeding wheel picks up the rice from the stock bin supporting plate and stably conveys the rice forwards along the inclined surface. By means of the design, uniform conveying of the rice is guaranteed, and the screening efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of rice processing equipment, and in particular to a screening device for rice processing. Background Art

[0002] In the rice processing industry, screening is a very important process, which is directly related to the quality and processing efficiency of rice. However, the traditional rice screening method has a series of problems to be solved, which constitute the background technology of the rice processing screening device proposed by the present invention.

[0003] First of all, traditional screening methods often rely on manual operation, which is not only time-consuming and labor-intensive, but also inefficient. With the continuous increase in the amount of rice processing, manual screening has been unable to meet the needs of efficient production and has become one of the bottlenecks restricting the development of the rice processing industry.

[0004] Secondly, the screening effect of traditional screening equipment is limited, and it is difficult to effectively separate the rice grains from the bran, resulting in low purity of the rice after screening. This not only affects the quality of the rice, but also increases the difficulty and cost of subsequent processing.

[0005] In addition, traditional screening equipment also has the problem of rice waste and environmental pollution during the screening process. Due to incomplete screening, part of the rice is wasted during the screening process, and the flying of rice chaff also causes environmental pollution.

[0006] Finally, the traditional screening equipment has a low degree of automation, making it difficult to achieve continuity and stability in rice processing. This not only increases the frequency and difficulty of manual intervention, but also affects the overall efficiency and quality of rice processing. Summary of the invention

[0007] The invention relates to a screening device for rice processing, which realizes efficient and automatic screening of rice, improves screening efficiency and purity, reduces rice waste and environmental pollution, and brings significant technical progress to the rice processing industry.

[0008] The present invention provides a screening device for rice processing, specifically comprising: a screening chassis; the upper end of a side wall at one end of the screening chassis is an outward convex structure, the top of the outward convex part is provided with a rice feeding port which is wide at the top and narrow at the bottom, the rice feeding port is communicated with the inner cavity of the screening chassis, a horizontal silo support plate is fixedly provided in the inner cavity of the screening chassis below the rice feeding port; a separation tongue plate is provided at the edge of the inner end of the silo support plate, and a hinge shaft is provided at one end of the separation tongue plate close to the silo support plate for rotational connection in the screening chassis; the position above the silo support plate deviating from the separation tongue plate is horizontally rotated A feeding shaft is dynamically installed; two bran discharge fans are symmetrically arranged on the top of the screening box on one side of the end of the separation tongue plate; a vertical limiting cross plate is horizontally arranged in the screening box below the end of the separation tongue plate; a filtering screen plate covering the inner cavity of the screening box is arranged in the screening box below the limiting cross plate; a discharging guide plate is arranged in the inner cavity of the screening box below the filtering screen plate; a motor is fixedly installed on the screening box at one end of the feeding shaft, and a toggle wheel is fixedly installed on the other end of the feeding shaft; a controller is also hung on the side wall of the screening box at the end where the motor is located.

[0009] Furthermore, limit blocks are respectively provided on the inner side walls of the screening machine box on the left and right sides of the end of the separation tongue plate, and the limit blocks are used to limit the upward turning angle of the separation tongue plate.

[0010] Furthermore, a discharge pipe with a reduced diameter is provided at the upper end of the bran discharge fan, and a bend in the discharge pipe is downwardly connected to an external bran collection device.

[0011] Furthermore, a feeding wheel is fixedly provided on the part of the feeding shaft corresponding to the silo support plate, and the feeding wheel is provided with a feeding chute in a ring shape, one end of the chute wall of the feeding chute is an inclined surface, and the other end is a right-angle surface, and the feeding wheel rotates clockwise.

[0012] Furthermore, three driving protrusions are fixedly provided in an annular shape on the wall of the driving wheel.

[0013] Furthermore, a fixed disk is fixedly provided at the end of the hinge shaft corresponding to one end of the toggle wheel on the separation tongue plate, and a fixed protrusion is fixedly provided on the top of the fixed disk. When the toggle wheel rotates clockwise, the toggle protrusion touches the fixed protrusion.

[0014] Furthermore, a spring is fixedly provided at the upper end of the limiting horizontal plate, and the upper end of the spring is fixedly connected to the bottom of the separation tongue plate. The end of the separation tongue plate is a downwardly bent structure. Under the action of the spring and the limiting block, the separation tongue plate is always in a state of tilting upward toward one end of the chaff discharge fan. After the moving protrusion is squeezed by the fixed protrusion, the separation tongue plate is forced to flip down. After the moving protrusion is separated from the fixed protrusion, it returns to its original position and rebounds under the action of the spring, forcing the rice grains and chaff on the separation tongue plate to separate.

[0015] Furthermore, one end of the filter screen plate close to the bran discharge fan is higher than the other end, and the lower end of the filter screen plate passes through the side panel of the screening chassis. The part of the filter screen plate located in the screening chassis is provided with sieve holes for grains to pass through, and the part located outside the screening chassis is provided with an impurity collecting groove for collecting sand and gravel impurities.

[0016] Furthermore, the discharge guide plate is an inclined plate structure that tilts outward and downward to guide the discharge of the screened grains.

[0017] The present invention provides a screening device for rice processing, which has the following beneficial effects:

[0018] First, the rice is easily added into the screening machine through the rice feeding port and falls on the silo pallet. After the motor is started, the feeding shaft rotates, and the feeding chute on the feeding wheel picks up the rice from the silo pallet and transports it forward steadily along the inclined surface. This design not only ensures the uniform transportation of rice, but also greatly improves the screening efficiency.

[0019] When the rice is transported to the separation tongue, the toggle protrusion on the toggle wheel touches the fixed protrusion on the fixed disk, generating a squeezing force to flip the separation tongue down. In this process, the rice falls by its own gravity when it is transported to a higher place. The heavier grains fall first, and the chaff falls later, achieving the initial separation of the grains and chaff. The chaff is sucked out by the exhaust fan and connected to the external chaff collection device, realizing the automatic collection of the chaff, avoiding the flying and waste of chaff in the traditional screening process.

[0020] The design of the filter screen is even more ingenious. Its inclined structure allows the rice to slide to the lower end along the screen plate under the effect of gravity during the falling process. The sieve holes on the screen plate allow the grains to pass through, while the heavy impurities and some are left in the impurity collection tank and removed manually. This design not only ensures the purity of the grains, but also facilitates the cleaning of impurities.

[0021] In addition, the separation tongue plate can be reset and rebounded by the spring, returning to the state of tilting upward toward the end of the rice bran discharge fan. The vibration generated by this reset process helps to further separate the rice grains and rice bran, improving the screening effect.

[0022] Finally, the grains screened by the filter screen slide along the screen plate to the lower end and finally fall on the discharge guide plate. The inclined structure of the discharge guide plate guides the screened grains to be discharged smoothly from the screening box, completing the entire screening process. This design not only simplifies the operation process, but also improves the screening efficiency.

[0023] In summary, the screening device for rice processing in this embodiment, through a series of ingenious designs, realizes efficient and automated screening of rice, which not only improves the screening efficiency and purity, but also facilitates the cleaning of impurities and the collection of rice bran, bringing significant technological progress to the rice processing industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0025] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0026] In the attached picture:

[0027] Figure 1 A schematic diagram of the first axial view of the present invention is shown;

[0028] Figure 2 A second axial structural schematic diagram of the present invention is shown;

[0029] Figure 3 It shows a schematic diagram of the axial structure of the screening machine box of the present invention in a state where the side plate is moved out;

[0030] Figure 4 The present invention shows Figure 3 A is a schematic diagram of the structure of the enlarged part;

[0031] Figure 5 It shows a schematic diagram of the axial structure of the screening machine box of the present invention in a state where the side panels are removed;

[0032] Figure 6 It shows a schematic diagram of the axial structure of the screening machine box of the present invention when the side panels are removed;

[0033] Figure 7 A schematic diagram of the axial structure of a feeding wheel of the present invention is shown;

[0034] Figure 8 A partial axial structural schematic diagram of the separation tongue plate of the present invention is shown.

[0035] Reference numerals list

[0036] 1. Screening machine box; 101. Silo support plate; 102. Limit block;

[0037] 2. Add rice to the inlet;

[0038] 3. Bran discharge fan; 301. Discharge pipe;

[0039] 4. Feeding shaft; 401. Driving wheel; 4011. Driving protrusion; 402. Feeding wheel; 4021. Feeding chute;

[0040] 5. Motor;

[0041] 6. Controller;

[0042] 7. Separation tongue plate; 701. Hinge shaft; 702. Fixing plate; 7021. Fixing protrusion;

[0043] 8. Limiting horizontal plate; 801. Spring;

[0044] 9. Filter sieve plate; 901. sieve hole; 902. impurity collection tank;

[0045] 10. Discharge guide plate. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] Example 1: Please refer to Figures 1 to 8 :

[0048] The present invention proposes a screening device for rice processing, comprising: a screening chassis 1; an upper end of a side wall of one end of the screening chassis 1 is an outward convex structure, a top of the outward convex part is provided with a rice feeding port 2 which is wide at the top and narrow at the bottom, the rice feeding port 2 is communicated with the inner cavity of the screening chassis 1, a horizontal silo support plate 101 is fixedly provided in the inner cavity of the screening chassis 1 below the rice feeding port 2; a separation tongue plate 7 is provided at the edge of the inner end of the silo support plate 101, and a hinge shaft 701 is provided at one end of the separation tongue plate 7 close to the silo support plate 101 and is rotatably connected to the screening chassis 1; a horizontal silo support plate 7 is provided at the position above the silo support plate 101 which is biased toward the separation tongue plate 7. A feed shaft 4 is rotatably installed on the top of the screening chassis 1 on one side of the end of the separation tongue plate 7; two bran discharge fans 3 are symmetrically provided on the top of the screening chassis 1 on the side of the end of the separation tongue plate 7; a vertical limiting cross plate 8 is horizontally provided in the screening chassis 1 below the end of the separation tongue plate 7; a filtering screen plate 9 covering the inner cavity of the screening chassis 1 is provided in the screening chassis 1 below the limiting cross plate 8; a discharging guide plate 10 is provided in the inner cavity of the screening chassis 1 below the filtering screen plate 9; a motor 5 is fixedly installed on the screening chassis 1 at one end of the feed shaft 4, and a toggle wheel 401 is fixedly installed on the other end of the feed shaft 4; a controller 6 is also hung on the side wall of the screening chassis 1 at the end where the motor 5 is located.

[0049] Wherein, limit blocks 102 are respectively arranged on the inner side walls of the screening machine box 1 on the left and right sides of the end of the separation tongue plate 7, and the limit blocks 102 are used to limit the upward turning angle of the separation tongue plate 7.

[0050] Among them, a discharge pipe 301 with a reduced diameter is provided at the upper end of the bran discharge fan 3, and the discharge pipe 301 is bent downward and connected to an external bran collection device.

[0051] Among them, a feeding wheel 402 is fixedly provided on the part of the feeding shaft 4 corresponding to the silo support plate 101, and the feeding wheel 402 is provided with a feeding chute 4021 in a ring shape. One end of the groove wall of the feeding chute 4021 is an inclined surface, and the other end is a right-angle surface. The feeding wheel 402 rotates clockwise.

[0052] Among them, three toggle protrusions 4011 are fixedly provided in an annular shape on the wall of the toggle wheel 401 .

[0053] Among them, a fixed disk 702 is fixedly arranged at the end of the hinge shaft 701 corresponding to the toggle wheel 401 on the separation tongue plate 7, and a fixed protrusion 7021 is fixedly arranged on the top of the fixed disk 702. When the toggle wheel 401 rotates clockwise, the toggle protrusion 4011 touches the fixed protrusion 7021, generating a squeezing force. This squeezing force is transmitted to the separation tongue plate 7 through the hinge shaft 701, so that the separation tongue plate 7 is forced to turn down. The rice on the separation tongue plate 7 falls by its own gravity during the process of being transported to a higher place. The heavier grains fall first, and the chaff falls back later. This goes back and forth until it is sent out from the end of the separation tongue plate 7. At this time, the chaff will be sucked out by the discharge fan 3, and the grains will fall onto the filtering screen plate 9 below. Under the action of the chaff discharge fan 3, the chaff is sucked away through the discharge pipe 301, and is connected to the external chaff collection device to realize the collection of chaff.

[0054] Among them, a spring 801 is fixedly provided at the upper end of the limiting horizontal plate 8, and the upper end of the spring 801 is fixedly connected to the bottom of the separation tongue plate 7. The end of the separation tongue plate 7 is a downwardly bent structure. Under the action of the spring 801 and the limiting block 102, the separation tongue plate 7 is always in a state of tilting upward toward one end of the chaff discharge fan 3. After the pushing protrusion 4011 is squeezed by the fixed protrusion 7021, the separation tongue plate 7 is forced to flip down. After the pushing protrusion 4011 is separated from the fixed protrusion 7021, it resets and rebounds under the action of the spring 801, forcing the rice grains and chaff on the separation tongue plate 7 to separate.

[0055] Embodiment 2, on the basis of embodiment 1, one end of the filter screen plate 9 close to the bran discharge fan 3 is higher than the other end, the lower end of the filter screen plate 9 passes through the side plate of the screening chassis 1, and the part of the filter screen plate 9 located in the screening chassis 1 is provided with sieve holes 901 for grains to pass through, and the part located outside the screening chassis 1 is provided with an impurity collecting trough 902 for collecting sand and gravel impurities.

[0056] The discharge guide plate 10 is an inclined plate structure that tilts outward and downward to guide the discharge of the screened grains.

[0057] The working principle of this embodiment:

[0058] The rice is added into the screening machine box 1 through the rice adding port 2 and falls on the silo support plate 101. At this time, the motor 5 is started, driving the feeding shaft 4 to rotate. The feeding wheel 402 on the feeding shaft 4 rotates clockwise, and the feeding chute 4021 on the feeding wheel 402 picks up the rice from the silo support plate 101 and pushes it forward along the inclined surface of the feeding chute 4021. Since one end of the feeding chute 4021 is an inclined surface and the other end is a right-angle surface, the rice is uniformly and stably transported forward to the separation tongue plate 7 under the action of the feeding chute 4021.

[0059] When the rice is transported to the separation tongue plate 7, the toggle wheel 401 at the other end of the feed shaft 4 also starts to rotate. The toggle protrusion 4011 on the toggle wheel 401 touches the fixed protrusion 7021 on the fixed disk 702 during the rotation process, generating a squeezing force. This squeezing force is transmitted to the separation tongue plate 7 through the hinge shaft 701, forcing the separation tongue plate 7 to turn down. The rice on the separation tongue plate 7 falls by its own gravity during the process of being transported to a higher place. The heavier grains fall first, and the chaff falls back later. This goes back and forth until it is sent out from the end of the separation tongue plate 7. At this time, the chaff will be sucked out by the discharge fan 3, and the grains will fall onto the filtering screen plate 9 below. Under the action of the chaff discharge fan 3, the chaff is sucked away through the discharge pipe 301 and connected to the external chaff collection device to achieve the collection of chaff.

[0060] One end of the filter screen plate 9 close to the bran discharge fan 3 is higher than the other end. This inclined design allows the rice to slide toward the lower end along the filter screen plate 9 under the action of gravity during the falling process. At the same time, the filter screen plate 9 is provided with a sieve hole 901 to allow the grains to pass through, while the heavy impurities and some are left in the impurity collection slot 902 of the filter screen plate 9 and are taken out manually.

[0061] After the separation tongue plate 7 is pressed and turned down by the toggle protrusion 4011, as the toggle wheel 401 continues to rotate, the toggle protrusion 4011 is separated from the fixed protrusion 7021. At this time, the separation tongue plate 7 is reset and rebounded under the action of the spring 801, and returns to the state of tilting upward toward the end of the rice chaff discharge fan 3. The vibration generated by this reset process helps to further separate the rice grains and rice chaff in the rice.

[0062] The grains screened by the filter screen plate 9 continue to slide along the screen plate to the lower end and finally fall on the discharge guide plate 10. The discharge guide plate 10 is an inclined plate structure inclined outward and downward, guiding the screened grains to be discharged smoothly from the screening box 1, completing the entire screening process.

[0063] In this article, there are a few points to note:

[0064] 1. The drawings of the embodiments of the present invention only involve structures related to the embodiments of the present invention, and other structures can refer to the general design.

[0065] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0066] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A screening device for rice processing, comprising: A screening box (1); characterized in that the upper end of the side wall of one end of the screening box (1) is an outward convex structure, and the top of the outward convex part is provided with a rice feeding port (2) which is wide at the top and narrow at the bottom, the rice feeding port (2) is connected to the inner cavity of the screening box (1), and a horizontal silo support plate (101) is fixedly provided in the inner cavity of the screening box (1) below the rice feeding port (2); a separation tongue plate (7) is provided at the edge of the inner end of the silo support plate (101), and a hinge shaft (701) is provided at one end of the separation tongue plate (7) close to the silo support plate (101) and is rotatably connected to the screening box (1); a feeding shaft (4) is rotatably installed at a position above the silo support plate (101) biased towards the separation tongue plate (7); the separation Two bran discharge fans (3) are symmetrically arranged on the top of the screening case (1) on one side of the end of the tongue plate (7); a vertical limit plate (8) is horizontally arranged in the screening case (1) below the end of the separation tongue plate (7); a filter screen plate (9) covering the inner cavity of the screening case (1) is arranged in the screening case (1) below the limit plate (8); a discharge guide plate (10) is arranged in the inner cavity of the screening case (1) below the filter screen plate (9); a motor (5) is fixedly mounted on the screening case (1) at one end of the feeding shaft (4), and a toggle wheel (401) is fixedly mounted on the other end of the feeding shaft (4); a controller (6) is also mounted on the side wall of the screening case (1) at the end where the motor (5) is located.

2. A screening device for rice processing according to claim 1, characterized in that: Limit blocks (102) are respectively provided on the inner side walls of the screening machine box (1) on the left and right sides of the end of the separation tongue plate (7), and the limit blocks (102) are used to limit the upward turning angle of the separation tongue plate (7).

3. A screening device for rice processing according to claim 1, characterized in that: A discharge pipe (301) with a reduced diameter is provided at the upper end of the bran discharge fan (3), and the discharge pipe (301) is bent downward and communicated with an external bran collection device.

4. A screening device for rice processing according to claim 1, characterized in that: A feeding wheel (402) is fixedly provided on the part of the feeding shaft (4) corresponding to the silo support plate (101), and the feeding wheel (402) is provided with a feeding chute (4021) in an annular shape. One end of the chute wall of the feeding chute (4021) is an inclined surface, and the other end is a right-angle surface. The feeding wheel (402) rotates clockwise.

5. A screening device for rice processing according to claim 1, characterized in that: Three driving protrusions (4011) are fixedly provided in an annular manner on the wall of the driving wheel disc (401).

6. A screening device for rice processing according to claim 5, characterized in that: A fixed disk (702) is fixedly provided at the end of a hinge shaft (701) at one end of the separation tongue plate (7) corresponding to the toggle wheel (401), and a fixed protrusion (7021) is fixedly provided at the top of the fixed disk (702). When the toggle wheel (401) rotates clockwise, the toggle protrusion (4011) contacts the fixed protrusion (7021).

7. A screening device for rice processing according to claim 6, characterized in that: A spring (801) is fixedly provided at the upper end of the limiting horizontal plate (8), and the upper end of the spring (801) is fixedly connected to the bottom of the separation tongue plate (7). The end of the separation tongue plate (7) is a downwardly bent structure. Under the action of the spring (801) and the limiting block (102), the separation tongue plate (7) is always in a state of being tilted upward toward one end of the rice chaff discharge fan (3). After the moving protrusion (4011) and the fixed protrusion (7021) are pressed against each other, the separation tongue plate (7) is forced to turn downward. After the moving protrusion (4011) and the fixed protrusion (7021) are separated, they are reset and rebounded under the action of the spring (801), forcing the rice grains and rice chaff on the separation tongue plate (7) to be separated.

8. A screening device for rice processing according to claim 1, characterized in that: One end of the filter screen plate (9) close to the bran discharge fan (3) is higher than the other end, and the lower end of the filter screen plate (9) passes through the side plate of the screening machine box (1). The portion of the filter screen plate (9) located in the screening machine box (1) is provided with a sieve hole (901) for allowing the grains to pass through, and the portion located outside the screening machine box (1) is provided with an impurity collection groove (902) for collecting sand and stone impurities.

9. A screening device for rice processing according to claim 1, characterized in that: The discharge guide plate (10) is an inclined plate structure inclined outward and downward, guiding the discharge of the screened grains.

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