Impurity screening device for grain and oil processing

Abstract

The utility model relates to an impurity screening device for grain and oil processing, which comprises a support frame, a screening mechanism and a cleaning device, the screening mechanism comprises a mounting frame, a first screen, a second screen and a bottom plate, the bottom plate is fixed on the support frame, and the first screen and the second screen are sequentially mounted in the mounting frame from top to bottom; the cleaning device comprises a driving structure, a mounting plate, a positioning plate, a threaded rod, a connecting rod, a moving frame and a cleaning brush, the cleaning brush is mounted on the moving frame, the moving frame stretches across the first screen and the second screen, the threaded rod and the connecting rod are parallel and located on the outer sides of the two ends of the mounting frame respectively, and the threaded rod and the connecting rod are sleeved with the two ends of the moving frame respectively. The driving structure is used for driving the moving frame to move. The impurity screening device for grain and oil processing has the function of automatically cleaning the screen, manual dredging can be omitted, the screen does not need to be detached, and the working efficiency of the impurity screening device cannot be affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of grain and oil raw material processing, and particularly relates to an impurity screening device for grain and oil processing. BACKGROUND

[0002] The grain and oil raw material processing process generally refers to a process of converting agricultural products such as grains and oilseeds into finished products or semi-finished products that can be directly consumed or used for food production through a series of process treatments. The most important step in the grain and oil processing process is the impurity removal process of the raw materials. The impurity removal of the raw materials is crucial for ensuring the processing efficiency and product quality of the grain and oil. Impurities such as plant stems and leaves, foreign seeds, and shriveled seeds are inevitably mixed in during the collection, drying, transportation, and storage processes. The presence of these impurities not only affects the processing efficiency of the grain and oil raw materials but also may cause damage to the equipment and reduce the product quality. The most commonly used impurity removal device for grain and oil raw materials in the existing technology generally uses a screening device to screen and remove impurities from the grain and oil raw materials with the help of a screen. For example, the utility model patent with the application number 202322501867.2 and the name "grain and oil raw material screening machine" discloses a raw material screening machine that uses a sieve plate for impurity removal when processing grain and oil raw materials. However, the screen holes of the sieve plate are easily blocked during use due to the presence of many impurities or high humidity in the raw materials. The screening machine generally has two layers of screens for grading and removing impurities. Since the two layers of screens are difficult to clean, they need to be disassembled to clear the blocked screen holes when necessary, which is time-consuming, labor-intensive, and affects production efficiency. SUMMARY

[0003] To solve the above problems, the main purpose of the utility model is to provide an impurity screening device for grain and oil processing. The device has the function of automatically cleaning the screen, which can eliminate the need for manual cleaning and does not require disassembly of the screen, thus not affecting the working efficiency of the impurity screening device.

[0004] To achieve the above purpose, the utility model provides an impurity screening device for grain and oil processing, which includes a support frame, a screening mechanism, and a cleaning device. The screening mechanism includes a mounting frame, a first screen, a second screen, and a bottom plate. The bottom plate is fixed on the support frame, the mounting frame is fixed on the bottom plate, and the first screen and the second screen are installed in the mounting frame from top to bottom. The cleaning device includes a driving structure, a mounting plate, a positioning plate, a threaded rod, a connecting rod, a moving frame, and a cleaning brush. The cleaning brush is installed on the moving frame, the moving frame spans between the first screen and the second screen, the threaded rod and the connecting rod are parallel and located on the outer sides of the two ends of the mounting frame, the two ends of the moving frame are respectively sleeved on the threaded rod and the connecting rod, and the driving structure is used to drive the moving frame to displace.

[0005] Further, the number of positioning plates is three, the mounting plate and any one of the positioning plates are fixed on one outer side of the mounting frame, the threaded rod is located between the mounting plate and the corresponding positioning plate, and the other two positioning plates are fixed on the other outer side of the mounting frame, and the connecting rod is located between the two positioning plates on the outer side.

[0006] Further, the driving structure is fixed on the mounting plate, and an output end of the driving structure is rotationally connected with one end of the threaded rod through the mounting plate.

[0007] Further, one end of the moving frame is provided with a first positioning ring, and the other end is provided with a second positioning ring, an inner wall of the first positioning ring is provided with a threaded structure, the first positioning ring is sleeved on the threaded rod, and the second positioning ring is sleeved on the connecting rod.

[0008] Further, a strip-shaped hole is arranged in the horizontal direction at the middle position of the two side faces of the mounting frame, and the two ends of the moving frame are respectively arranged in the two strip-shaped holes, and the moving frame can move in the strip-shaped hole.

[0009] Further, the device further comprises a feeding port and a pretreatment mechanism, the feeding port is located at the uppermost part of the impurity screening device, the pretreatment mechanism is located above the mounting frame and below the feeding port, the pretreatment mechanism comprises a dedusting chamber, an air extractor and a cleaning box body, the upper end of the dedusting chamber is communicated with the feeding port, the lower end is provided with a discharging port, and the cross-sectional area of the discharging port is larger than that of the lowest port of the feeding port.

[0010] Further, the air extractor is fixed on the rear end face of the dedusting chamber, the air extractor is communicated with the dedusting chamber, the cleaning box body is located in the dedusting chamber and in front of the suction inlet of the air extractor, and the side close to the air extractor of the cleaning box body is provided with a filter piece.

[0011] Through the above technical scheme, the beneficial effects of the device include:

[0012] (1) The impurity screening device for grain and oil processing has a cleaning device, the device can automatically clean the screen holes on the first screen and the second screen, without disassembling the two screens and without manual processing, so that time and labor are saved, and the clogged screen holes can be completely dredged.

[0013] (2) In addition, the impurity screening device further has a pretreatment mechanism, the pretreatment mechanism collects and processes the light impurities in the raw materials by means of the air extractor, and thus the quality and production efficiency of the grain and oil products are further improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model discloses further illustrate below combining with the drawing and specific embodiment.

[0015] Figure 1 It is the structure schematic diagram of the impurity screening device for grain and oil processing of the utility model.

[0016] Figure 2 It is the partial structure schematic diagram of the impurity screening device for grain and oil processing of the utility model.

[0017] Figure 3 It is the structure schematic diagram of another angle of the impurity screening device for grain and oil processing of the utility model.

[0018] Figure 4 It is the structure schematic diagram of the cleaning box of the impurity screening device for grain and oil processing of the utility model.

[0019] Explanation of reference signs

[0020] 10, support frame;

[0021] 21, mounting frame; 211, strip-shaped hole; 22, first screen; 221, first impurity removal port; 23, second screen; 231, second impurity removal port; 24, bottom plate; 241, discharge port;

[0022] 31, drive structure; 32, mounting plate; 33, positioning plate; 34, threaded rod; 35, connecting rod; 36, moving frame; 361, first positioning ring; 362, second positioning ring; 37, cleaning brush;

[0023] 40, feed inlet;

[0024] 51, impurity removal chamber; 52, exhaust fan; 53, cleaning box; 531, filter sheet. Specific embodiment

[0025] The technical scheme in the utility model embodiment is clearly and completely described below in combination with the drawings in the utility model embodiment.In the following description, a lot of specific details are set forth to facilitate a full understanding of the utility model, but the utility model can also be implemented in other ways different from the description herein, and those skilled in the art can make similar generalization without departing from the connotation of the utility model, therefore the utility model is not limited by the following disclosed specific embodiments.

[0026] As Figure 1As shown, it is the structural schematic view of the impurity screening device for grain and oil processing, the impurity screening device for grain and oil processing of the embodiment is equipped with support frame 10, screening mechanism and cleaning device, support frame 10 is stably installed on a horizontal plane, screening mechanism and cleaning device are fixed on support frame 10, wherein screening mechanism is equipped with mounting bracket 21, first screen 22, second screen 23 and bottom plate 24, bottom plate 24 is fixed on support frame 10, mounting bracket 21 is fixed on bottom plate 24, first screen 22 and second screen 23 are sequentially installed in mounting bracket 21 from top to bottom and are located above bottom plate 24, in addition, first screen 22 and second screen 23 are arranged in an inclined manner, the inclination direction and inclination angle of first screen 22 and second screen 23 in the embodiment are same, in other embodiments, different inclination direction and inclination angle can also be presented, and the screen hole diameter of first screen 22 is greater than the screen hole diameter of second screen 23, so that screening of different levels can be realized.

[0027] The screening device in the embodiment is also equipped with feed inlet 40, feed inlet 40 is located at the highest point of the whole device, and the feed inlet 40 is located above the higher end of first screen 22, the screening device of the embodiment is also equipped with vibrator (not shown in the figure), the vibrator is used to vibrate first screen 22 and second screen 23 to make them vibrate screening, the structure of the vibrator belongs to the prior art, and will not be repeated here, in addition, the lower end of first screen 22 is provided with first impurity removal port 221, the lower end of second screen 23 is provided with second impurity removal port 231, and the bottom of any side surface of bottom plate 24 is provided with discharge port 241.

[0028] Please refer to Figure 1 And Figure 2 As shown, the cleaning device in the embodiment is equipped with driving structure 31, mounting plate 32, positioning plate 33, threaded rod 34, connecting rod 35, moving frame 36 and cleaning brush 37, cleaning brush 37 is installed on moving frame 36, moving frame 36 is transverse between first screen 22 and second screen 23, in other words, moving frame 36 is located in the interlayer of first screen 22 and second screen 23. Threaded rod 34 and connecting rod 35 are parallel and respectively located at the outer side of both ends of mounting bracket 21, the horizontal direction of the middle position of the two side surfaces of mounting bracket 21 is provided with strip-shaped hole 211, moving frame 36 can move in strip-shaped hole 211, specifically, the two ends of moving frame 36 are respectively threaded in two strip-shaped holes 211, after the two ends of moving frame 36 pass through the corresponding strip-shaped holes 211, they are respectively sleeved on threaded rod 34 or connecting rod 35, as Figure 2 As shown, one end of moving frame 36 is provided with first positioning ring 361, the inner wall of first positioning ring 361 is provided with threaded structure, the other end is provided with second positioning ring 362, first positioning ring 361 is sleeved on threaded rod 34, and second positioning ring 362 is sleeved on connecting rod 35.

[0029] As Figure 1 shown in the figure, the number of positioning plates 33 in the embodiment is three, the number of mounting plates 32 is one, the mounting plate 32 and any one of the positioning plates 33 are fixed on an outer side of the mounting frame 21, the threaded rod 34 is located between the mounting plate 32 and the positioning plate 33 corresponding to it, the other two positioning plates 33 are fixed on the other outer side of the mounting frame 21, and the connecting rod 35 is located between the two positioning plates 33 on the outer side. The driving structure 31 is used to drive the displacement of the moving frame 36. Specifically, the driving structure 31 is fixed on the mounting plate 32, and the output end of the driving structure 31 is rotationally connected with one end of the threaded rod 34 through the mounting plate 32.

[0030] In the application process of the grain and oil processing impurity screening device, after the installation is completed according to the above description, the driving structure 31 is started, the driving structure 31 drives the threaded rod 34 to rotate, so that the moving frame 36 sleeved on the outer wall of the threaded rod 34 is displaced. The cleaning brush 37 is arranged on the upper end face and the lower end face of the moving frame 36, and the cleaning brush 37 can be made of a material with appropriate hardness. The length of the cleaning brush 37 is greater than the distance between the moving frame 36 and the first screen 22 and the second screen 23. Therefore, the cleaning brush 37 can completely clean the screen holes in the two screens during the displacement of the moving frame 36. In the use process of the device, all screen holes on the screen can be cleaned, the steps of manual disassembly and cleaning are omitted, and the cleaning efficiency is improved.

[0031] In other embodiments of the impurity screening device, a pretreatment mechanism is also provided, as shown in Figure 1 and Figure 3 The pretreatment mechanism of the embodiment is located above the mounting frame 21 and below the feed inlet 40. The pretreatment mechanism is provided with a dedusting chamber 51, an exhaust fan 52 and a cleaning box body 53. The upper end of the dedusting chamber 51 is communicated with the feed inlet 40, and the lower end is provided with a discharging port (not marked in the figure). The cross-sectional area of the discharging port is greater than that of the lowest port of the feed inlet 40. The exhaust fan 52 is fixed on the rear end face of the dedusting chamber 51, and the exhaust fan 52 is communicated with the inside of the dedusting chamber 51. The cleaning box body 53 is movably located in the dedusting chamber 51 and in front of the suction inlet of the exhaust fan 52.

[0032] Before the grain and oil raw materials are screened and graded by the screen, a pretreatment step is added. By starting the exhaust fan 52 of the pretreatment mechanism, the grain and oil raw materials can be collected in the cleaning box body 53 before falling into the first screen 22 from the feed inlet 40, that is, in the dedusting chamber 51, some lighter impurities such as plant roots, jujube stems or dust are adsorbed and collected. As Figure 4As shown, the cleaning box body 53 of the embodiment can be pulled into the impurity removal chamber 51, and the cleaning box body 53 is provided with a filter sheet 531 on the side close to the air suction fan 52, so that the cleaning box body 53 can collect the impurities collected by the air suction fan, improve the impurity removal degree of raw materials, and further improve the quality of grain and oil products and the production efficiency.

[0033] Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

Claims

1. A grain and oil processing impurity screening device, characterized in that, It includes: Support frame (10); Screening mechanism, including mounting frame (21), first screen (22), second screen (23) and bottom plate (24), the bottom plate (24) is fixed on the support frame (10), the mounting frame (21) is fixed on the bottom plate (24), the first screen (22) and second screen (23) are installed in the mounting frame (21) in turn from top to bottom; Cleaning device, including driving structure (31), mounting plate (32), positioning plate (33), threaded rod (34), connecting rod (35), moving frame (36) and cleaning brush (37), the cleaning brush (37) is installed on the moving frame (36), the moving frame (36) is across between the first screen (22) and the second screen (23), the threaded rod (34) and the connecting rod (35) are parallel and respectively located at both ends of the mounting frame (21) outside, both ends of the moving frame (36) are respectively sleeved on the threaded rod (34) and the connecting rod (35), the driving structure (31) is used for driving the moving frame (36) to displace.

2. The impurity screening device for grain oil processing according to claim 1, characterized in that, The number of positioning plates (33) is three, the mounting plate (32) and any one positioning plate (33) are fixed on one outer side of the mounting frame (21), the threaded rod (34) is located between the mounting plate (32) and the corresponding positioning plate (33), the other two positioning plates (33) are fixed on the other outer side of the mounting frame (21), and the connecting rod (35) is located between the two positioning plates (33) on the outer side.

3. The impurity screening device for grain oil processing according to claim 1, characterized in that, The driving structure (31) is fixed on the mounting plate (32), and an output end of the driving structure (31) is rotationally connected with one end of the threaded rod (34) penetrating through the mounting plate (32).

4. The impurity screening device for grain oil processing according to claim 1, characterized in that, One end of the moving frame (36) is provided with a first positioning ring (361), and the other end is provided with a second positioning ring (362), a threaded structure is arranged on the inner wall of the first positioning ring (361), the first positioning ring (361) is sleeved on the threaded rod (34), and the second positioning ring (362) is sleeved on the connecting rod (35).

5. The grain and oil processing impurity screening device according to claim 1, characterized in that, The horizontal direction of the middle position of the two side faces of the mounting frame (21) is provided with a strip-shaped hole (211), and the two ends of the moving frame (36) are respectively arranged in the two strip-shaped holes (211), and the moving frame (36) can move in the strip-shaped hole (211).

6. The grain and oil processing impurity screening device according to claim 1, characterized in that, It also includes a feed inlet (40) and a pretreatment mechanism, the feed inlet (40) is located at the uppermost of the impurity screening device, the pretreatment mechanism is located above the mounting frame (21) and below the feed inlet (40), the pretreatment mechanism includes a dedusting chamber (51), an exhaust fan (52) and a cleaning box body (53), the upper end of the dedusting chamber (51) is communicated with the feed inlet (40), the lower end is provided with a dropping port, and the cross-sectional area of the dropping port is greater than that of the lowest port of the feed inlet (40).

7. The impurity screening device for grain oil processing according to claim 6, characterized in that, The air extractor (52) is fixed to the rear end surface of the impurity removing chamber (51), and is communicated with the impurity removing chamber (51), the cleaning box (53) is located in the impurity removing chamber (51) and in front of the suction inlet of the air extractor (52), and the cleaning box (53) is provided with a filter sheet (531) on the side close to the air extractor (52).

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