Grain and oil processing raw material screening device

Abstract

The utility model discloses a grain and oil processing raw material screening device which comprises a screening box with the bottom end of an opening structure, a winnowing box installed above the screening box and a feeding table arranged above the winnowing box, an inner cavity of the feeding table is of a hollow structure, and a winnowing rotary brush mechanism is installed in the winnowing box. A driving part used for operation of the winnowing rotary brush mechanism is installed on the right side of the winnowing box, and a vibrating screen mechanism is installed in the screening box. According to the utility model, grain and oil processing raw materials are subjected to double functions of rotary brushing and wind screening to perform primary separation on the raw materials and impurities, and then the raw materials and the impurities are subjected to secondary separation by the vibrating screen, so that the two-stage screening of the raw materials and the impurities is realized, the screening effect and the use effect are excellent, the content of the impurities in the raw materials is greatly reduced, and the production cost is reduced. The overall quality of the raw materials is improved; meanwhile, the quality of subsequent grain and oil processed finished products is also improved.

Description

Technical Field

[0001] This utility model relates to the field of grain and oil processing equipment, specifically a grain and oil processing raw material screening device. Background Technology

[0002] Grain and oil refers to cereals, beans, and other grains and oilseeds, as well as their processed and semi-processed products. During grain and oil processing, the raw materials, such as cereals and beans, need to be screened beforehand to remove impurities. The screened raw materials are then fed into subsequent processing steps. Currently, screening devices are used for this process. However, existing screening devices on the market use a single vibrating screen, which often results in a large amount of impurities, such as rice husks, rice chips, or bean scraps, after screening. These impurities are difficult to separate quickly from the raw materials through the vibrating screen, leading to a high level of contamination and affecting the quality of subsequent grain and oil processing, resulting in poor performance. Therefore, a grain and oil processing raw material screening device is proposed. Utility Model Content

[0003] The purpose of this invention is to provide a screening device for grain and oil processing raw materials to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A grain and oil processing raw material screening device includes a screening box with an open bottom, an air separator installed above the screening box, and a feeding platform with a hollow inner cavity installed above the air separator.

[0006] The air classifier box is equipped with an air classifier rotary brush mechanism. A drive unit for the operation of the air classifier rotary brush mechanism is installed on the right side of the air classifier box, and an impurity discharge box is provided on the left side of the air classifier box. The air classifier rotary brush mechanism includes an auxiliary shaft and a drive shaft arranged vertically and horizontally. The left end of the auxiliary shaft passes horizontally through and extends into the air classifier box. The shaft surface of the auxiliary shaft is provided with an upper brush and a first fan blade from left to right inside the air classifier box. The left end of the drive shaft passes horizontally through and extends into the air classifier box. The shaft surface of the drive shaft is provided with a lower brush and a second fan blade from left to right inside the air classifier box.

[0007] The screening box is equipped with a vibrating screen mechanism, which consists of a vibrator and a vibrating screen that is horizontally arranged inside the screening box. The vibrating screen includes a first screening screen and a second screening screen that is inclined to the right side of the first screening screen. A discharge channel is formed between the right side of the second screening screen and the right side of the screening box cavity.

[0008] Furthermore, the drive unit includes a transmission mechanism and a motor mounted on the top of the screening box. The transmission mechanism consists of a first transmission wheel and a second transmission wheel, which are connected by a belt drive. The first transmission wheel is mounted on the right end of the auxiliary shaft extending out to the right side of the air separator box, and the second transmission wheel is mounted on the right end of the drive shaft extending out to the right side of the air separator box. The right end of the drive shaft is connected to the output shaft of the motor via a coupling.

[0009] Furthermore, the top of the air classifier is provided with an inlet that communicates with the inner cavity of the feeding platform. The left side of the air classifier is an open structure, and the inner cavity of the air classifier communicates with the inner cavity of the impurity discharge box. The left side of the impurity discharge box is an open structure, and the bottom surface of the inner cavity of the impurity discharge box is an inclined surface that slopes downward to the left, with an inclination of 20-65 degrees.

[0010] Furthermore, the left side of the inner cavity of the screening box is provided with an installation position for the vibrator, and the top of the screening box is provided with a feed inlet that communicates with the inner cavity of the air classifier, and the first screening screen is located directly below the feed inlet.

[0011] Furthermore, the second screening screen is installed with the left side higher than the right side and the inclination of the second screening screen is 20-70 degrees. The right side of the second screening screen is close to the right side of the inner wall of the screening box. A vertical plate is provided at the bottom right side of the second screening screen, and the back of the plate is connected to the inner side wall of the back plate of the screening box.

[0012] The beneficial effects of this utility model are:

[0013] This invention enables grain and oil processing raw materials to undergo a dual process of rotary cleaning and air screening to separate the raw materials from impurities in the first stage. Then, a vibrating screen performs a second-stage separation of the raw materials and impurities, thus achieving two-stage screening of raw materials and impurities. The screening effect and usage effect are excellent, which greatly reduces the impurity content in the raw materials and improves the overall quality of the raw materials. At the same time, it also improves the quality of the finished grain and oil products, which is conducive to the promotion and use of this grain and oil processing raw material screening device.

[0014] This utility model features a screening box with an open bottom, which facilitates the collection of screened impurities and raw materials. Impurities or raw materials can be discharged through the opening at the bottom of the screening box. The upright plate not only supports the second screening screen but also acts as a separator to separate impurities from raw materials. The inclined second screening screen can quickly guide the screened raw materials to the discharge channel, where the qualified raw materials are collected by the collection trough. Attached Figure Description

[0015] Figure 1 This is a front structural cross-sectional view of the grain and oil processing raw material screening device of this utility model;

[0016] Figure 2 This utility model Figure 1 A schematic diagram of the structure without support pillars installed.

[0017] Figure 3 This is a front view of the structure of the grain and oil processing raw material screening device of this utility model;

[0018] Figure 4 This is a three-dimensional view of the overall structure of the air separator and impurity discharge box of this utility model in a combined state.

[0019] Figure 5 This is a three-dimensional view of the overall structure of the air separator and impurity discharge box of this utility model in a second combined state.

[0020] Figure 6 This is a three-dimensional view of the screening box of this utility model.

[0021] In the diagram: 1. Screening box, 101. First screening screen, 102. Vibrator, 103. Support frame, 104. Second screening screen, 105. Vertical plate, 106. Box door, 107. Feed inlet, 108. Mounting position, 2. Support column, 3. Air separator, 301. Shaft hole, 302. Auxiliary drive shaft, 3021. First drive wheel, 303. First fan blade, 304. Upper brush, 305. Drive shaft, 3051. Second drive wheel, 306. Second fan blade, 307. Lower brush, 308. Motor, 309. Feed inlet, 310. Through hole, 311. Viewing window, 4. Impurity discharge box, 5. Feeding platform, 501. Feeding plate, 6. Collection trough. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-6This invention provides a technical solution for a grain and oil processing raw material screening device, comprising a screening box 1 with an open bottom, an air classifier 3 installed above the screening box 1, and a feeding platform 5 with a hollow inner cavity, located above the air classifier 3; an air classifier rotary brush mechanism is installed inside the air classifier 3, a drive unit for the operation of the air classifier rotary brush mechanism is installed on the right side of the air classifier 3, and an impurity discharge box 4 is provided on the left side of the air classifier 3; wherein, the top of the air classifier 3 has an inlet 309 that communicates with the inner cavity of the feeding platform 5, the cross-sectional shape of the feeding platform 5 is funnel-shaped, and two sets of feed plates 501 are inclinedly connected to the inner cavity of the feeding platform 5, the two sets of feed plates 501 are mirror images of each other, and the two sets of feed plates 501 are mirror images of each other. A feeding gap is formed between the feeding plates 501. The feeding gap is located directly above the auxiliary shaft 302 and the drive shaft 305. The feeding plates 501 can act as a buffer to slow down the falling speed of the grain and oil processing raw materials fed into the feeding platform 5, and at the same time play a role in dispersing and guiding, thereby guiding the grain and oil processing raw materials into the air classifier 3 along the feeding gap. The left side of the air classifier 3 is an open structure. The inner cavity of the air classifier 3 is connected to the inner cavity of the impurity discharge box 4. The left side of the impurity discharge box 4 is an open structure. The bottom surface of the inner cavity of the impurity discharge box 4 is an inclined surface that slopes downward to the left, and the inclination of the inclined surface is 20-65 degrees. Preferably, the inclination of the inclined surface of the impurity discharge box 4 can be set to 30 degrees, 45 degrees or 60 degrees.

[0024] In this embodiment, the aforementioned air-classifying rotary brush mechanism includes a secondary drive shaft 302 and a primary drive shaft 305 arranged vertically and laterally. The left end of the secondary drive shaft 302 passes laterally through and extends into the air-classifying box 3, and the shaft surface of the secondary drive shaft 302 is provided with an upper brush 304 and a first fan blade 303 from left to right inside the air-classifying box 3. The left end of the primary drive shaft 305 passes laterally through and extends into the air-classifying box 3, and the shaft surface of the primary drive shaft 305 is provided with an upper brush 304 and a first fan blade 303 from left to right inside the air-classifying box 3. Inside the air classifier 3, from left to right, are arranged a lower brush 307 and a second fan blade 306. The aforementioned drive unit includes a transmission mechanism and a motor 308 mounted on the top of the screening box 1. This transmission mechanism consists of a first transmission wheel 3021 and a second transmission wheel 3051, which are connected by a belt drive. The first transmission wheel 3021 is fitted onto the right end of the auxiliary shaft 302, extending out to the right side of the air classifier 3. The second transmission wheel 3051 is fitted onto the right end of the drive shaft 305, extending out to the right side of the air separator 3. The right end of the drive shaft 305 is connected to the output shaft of the motor 308 via a coupling. The right side wall of the air separator 3 has two sets of shaft holes 301, arranged vertically. The upper shaft hole 301 allows the auxiliary shaft 302 to pass through, and a bearing is installed on the outer surface of the auxiliary shaft 302 in contact with the shaft hole 301 to facilitate the circumferential rotation of the auxiliary shaft 302. The lower... The square shaft hole 301 allows the drive shaft 305 to pass through, and the outer surface of the drive shaft 305 contacts the shaft hole 301 to install a bearing to facilitate the circumferential rotation of the drive shaft 305. In addition, the right side wall of the air classifier 3 is also provided with through holes 310 at intervals. The through holes 310 can be used as heat dissipation holes to allow air circulation in the cavity of the air classifier 3. The front of the air classifier 3 is also provided with a viewing window 311 to facilitate direct viewing of the operating status and damage of the upper brush 304 and the lower brush 307.

[0025] It should be noted that when the drive unit drives the air-separating rotary brush mechanism, the auxiliary shaft 302 and the drive shaft 305 rotate synchronously under the transmission mechanism driven by the motor 308. This, in turn, drives the upper brush 304, lower brush 307, first fan blade 303, and second fan blade 306 to rotate circumferentially. The rotating upper brush 304 and lower brush 307 can rotate and brush the freely falling grain and oil processing raw materials to quickly separate the impurities from the raw materials. Furthermore, under the action of the airflow generated by the first fan blade 303 and second fan blade 306 blowing towards the impurity discharge box 4, the grain and oil processing raw materials are air-separated. The grain and oil processing raw materials continue to fall into the screening box 1, and the impurities in the air separation process are blown towards the impurity discharge box 4, thereby reducing the impurity content in the grain and oil processing raw materials. The bottom surface of the inner cavity of the impurity discharge box 4 is set as an inclined surface, which can facilitate the rapid discharge of impurities under the principle of gravity. With the cooperation of the motor 308 and the transmission mechanism, the drive shaft 305 and the auxiliary drive shaft 302 rotate in a circular motion, which in turn drives the first fan blade 303 and the second fan blade 306 to rotate in a circular motion, thereby generating a flowing air that blows towards the impurity discharge box 4. The first fan blade 303 or the second fan blade 306 can be, but is not limited to, a five-blade fan or a three-blade fan.

[0026] In this embodiment, a vibrating screen mechanism is installed inside the screening box 1. This vibrating screen mechanism consists of a vibrator 102 and a vibrating screen arranged horizontally inside the screening box 1. The vibrating screen includes a first screening screen 101 and a second screening screen 104 inclined to the right of the first screening screen 101. A discharge channel is formed between the right side of the second screening screen 104 and the right side of the inner cavity of the screening box 1. An installation position 108 for the vibrator 102 is provided on the left side of the inner cavity of the screening box 1. An inlet 107 communicating with the inner cavity of the air separator 3 is provided at the top of the screening box 1, and the first screening screen 101 is located directly below the inlet 107. The second screening screen 104 is positioned with the left side higher than the right side, and its inclination is 20-70 degrees. Preferably, the second screening screen... The inclination of screen 104 can be set to 30 degrees, 45 degrees or 60 degrees. The right side of the second screening screen 104 is adjacent to the right side of the inner wall of the screening box 1. A vertical plate 105 is provided at the bottom right side of the second screening screen 104. The back of the plate 105 is connected to the inner side wall of the back plate of the screening box 1. The vertical plate 105 serves to support the second screening screen 104. A door 106 is provided on the front of the screening box 1. The door 106 allows the screening box 1 to be opened from the front to expose the first screening screen 101 and the second screening screen 104, thereby facilitating the disassembly and maintenance of the first screening screen 101 or the second screening screen 104. A support frame 103 for supporting the second screening screen 104 is installed on the left side of the inner cavity of the screening box 1, and the support frame 103 has a triangular support structure.

[0027] It should be noted that when the air-separated grain and oil processing raw materials fall freely onto the first screening screen 101 inside the screening box 1, the vibrator 102 is pre-activated to cause the first screening screen 101 and the second screening screen 104 to vibrate. The vibrating first screening screen 101 vibrates and sieves the air-separated grain and oil processing raw materials, separating impurities. The grain and oil processing raw materials continue to be vibrated onto the second screening screen 104, where they continue to vibrate and sieve. Qualified grain and oil processing raw materials are guided by the second screening screen 104... The material can be discharged through the discharge channel. It should be noted that the vibrating screen mechanism composed of vibrator 102, first screening screen 101 and second screening screen 104 is a linear vibrating screen. The linear vibrating screen works by using the reciprocating rotary vibration generated by vibrator 102. The vibration of vibrator 102 drives the first screening screen 101 and the second screening screen 104 to vibrate and screen. The structure and principle of the linear vibrating screen are well-known technologies in the market, so they will not be described in detail here. Vibrator 102 can be, but is not limited to, conventional vibrating motors available in the market.

[0028] Before use, the grain and oil processing raw material screening device can be raised using the support column 2, that is, the support column 2 supports the screening box 1. The right side of the second screening screen 104 and the right side of the inner cavity of the screening box 1 form a discharge channel, and the collection trough 6 is placed below to collect qualified grain and oil processing raw materials. When using the grain and oil processing raw material screening device, the motor 308 and vibrator 102 are started, and the grain and oil processing raw materials are fed from the feeding platform 5. Under the action of gravity, the raw materials fall freely into the air separation box 3, and are air separated by the air separation rotary brush mechanism. To reduce impurities in the raw materials, the air-separated raw materials continue to fall into the screening box 1, where a vibrating screen mechanism vibrates and screens the raw materials to significantly reduce the impurity content. After the dual screening action of air separation and vibrating screening, the qualified grain and oil processing raw materials fall freely and are then collected by the collection tank 6, thus completing the screening of grain and oil processing raw materials. The cross-sectional shape of the collection tank 6 is U-shaped. The motor 308 can be a conventional motor available on the market. The principle of the motor 308 is a well-known technology on the market, so it will not be described in detail here.

[0029] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0030] The above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be understood that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present utility model, and these all fall within the protection scope of the present utility model. In the present utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "joining", "fixing", etc. should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components. Among them, there are various ways of detachable installation, such as by plugging and snapping, or by bolt connection, etc.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A grain and oil processing raw material screening device, characterized in that: The screening box is provided with an open bottom end, a winnowing box is installed above the screening box, and a feeding table is arranged above the winnowing box and has a hollow inner cavity; The winnowing box is internally provided with a winnowing rotary brush mechanism, the right side of the winnowing box is provided with a driving part for the operation of the winnowing rotary brush mechanism, and the left side of the winnowing box is provided with an impurity discharge box, the winnowing rotary brush mechanism comprises a sub-driving shaft and a main driving shaft arranged in an up-down manner and horizontally flush with each other, the left end of the sub-driving shaft horizontally penetrates into the inner part of the winnowing box and extends into the inner part of the winning box, and the surface of the shaft body of the sub-driving shaft is sequentially provided with an upper brush and a first fan blade from left to right at the position in the inner part of the winnowing box, the left end of the main driving shaft horizontally penetrates into the inner part of the winnowing box, and the surface of the shaft body of the main driving shaft is sequentially provided with a lower brush and a second fan blade from left to right at the position in the inner part of the winnowing box. The inner part of the screening box is internally provided with a vibrating screen mechanism, the vibrating screen mechanism comprises a vibrator and a vibrating screen mesh arranged horizontally in the inner part of the screening box, and the vibrating screen mesh comprises a first screening mesh and a second screening mesh connected to the right side of the first screening mesh in an inclined manner, and a discharge channel is formed between the right side of the second screening mesh and the right side of the inner cavity of the screening box.

2. The grain processing feedstock screening device of claim 1, wherein: The driving part comprises a transmission mechanism and a motor installed on the top of the screening box, the transmission mechanism comprises a first transmission wheel and a second transmission wheel, the first transmission wheel and the second transmission wheel are connected through a belt transmission, the first transmission wheel is sleeved on the right end of the sub-driving shaft extending out of the right side of the winnowing box, the second transmission wheel is sleeved on the right end of the main driving shaft extending out of the right side of the winnowing box, and the right end of the main driving shaft is connected with the output shaft of the motor through a shaft coupling.

3. The grain processing feedstock screening device of claim 1, wherein: The top end of the winnowing box is provided with a feeding port penetrating the inner cavity of the feeding table, the left side of the winnowing box is provided with an open structure, the inner cavity of the winnowing box penetrates the inner cavity of the impurity discharge box, the left side of the box body of the impurity discharge box is provided with an open structure, the inner cavity of the impurity discharge box is provided with an inclined surface inclined to the left and downward, and the inclination of the inclined surface is 20-65 degrees.

4. The grain processing feedstock screening device of claim 1, wherein: The left side of the inner cavity of the screening box is provided with a mounting position for the vibrator, the top end of the screening box is provided with a feeding port penetrating the inner cavity of the winnowing box, and the first screening mesh is located directly below the feeding port.

5. The grain processing feedstock screening device of claim 1, wherein: The second screening mesh is arranged in a position with the left side higher than the right side, and the inclination of the second screening mesh is 20-70 degrees, the right side of the second screening mesh is adjacent to the right side of the inner wall of the screening box, the right end of the right side of the second screening mesh is provided with a vertical plate, and the back of the plate body of the vertical plate is connected to the inner side wall of the back plate of the screening box.

Images