Adjustable angle and wind speed combined winnowing screen

Abstract

The utility model discloses a combined formula winnowing screen of adjustable inclination and wind speed, concretely relates to the winnowing screen technical field, including processing box, be provided with winnowing subassembly on the processing box, the winnowing subassembly includes the screen cloth board setting in the processing box, the one end of screen cloth board is inclined and is set down, and the top of screen cloth board is articulated with processing box, the bottom of screen cloth board is provided with electric push rod, the output of electric push rod extends to the bottom of screen cloth board and is connected with screen cloth board slidingly. The utility model is with independent wind speed regulation of double fan, can adjust low wind speed for light impurity, adjust high wind speed for slightly heavy impurity, avoids the material loss or impurity residual problem caused by the fixed wind speed of the existing equipment, and the whole structure gives consideration to the flexible adaptation of inclination and wind speed, can satisfy the multi -material sorting demand of different fields such as grain, medicinal material, food and so on, improves the equipment versatility and sorting efficiency.

Description

Technical Field

[0001] This utility model relates to the field of air classifier technology, and more specifically, to a combined air classifier with adjustable tilt angle and wind speed. Background Technology

[0002] As a key piece of equipment for separating particles of different densities and sizes, air classifiers are widely used in grain impurity removal, medicinal herb grading, food processing and other fields. Its core working principle is to separate materials according to particle size through the vibration of the screen body, and to use the airflow generated by the built-in fan to remove light impurities (such as dust, fragments and hair) to ensure the purity of the target material.

[0003] However, existing screens have a fixed and non-adjustable tilt angle, making it impossible to flexibly adjust according to material characteristics. When dealing with sticky materials that easily clog the screen, such as damp grains, the fixed tilt angle makes it difficult to accelerate the material's descent, leading to screen blockage and reduced sorting efficiency. In fine sorting scenarios such as medicinal herb grading, the fixed tilt angle cannot extend the material's residence time on the screen surface, resulting in incomplete sorting and insufficient purity of the target material. Furthermore, it is impossible to match appropriate airflow speeds to different types of impurities. When separating light impurities such as bran from flour, a fixed airflow speed can easily blow away the target material due to excessively high speeds, causing material loss. When separating slightly heavier impurities such as pebbles from rice, the airflow speed is too low to completely remove the impurities, affecting sorting quality. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a combined air classifier with adjustable tilt angle and wind speed, which aims to solve the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a combined air classifier with adjustable tilt angle and wind speed, comprising a processing box, on which an air classifier assembly is provided; the air classifier assembly includes a screen plate disposed inside the processing box, one end of the screen plate being inclined downwards, and the top of the screen plate being hinged to the processing box; an electric push rod is disposed at the bottom of the screen plate, the output end of the electric push rod extending to the bottom of the screen plate and slidingly connected to the screen plate, so that the output end of the electric push rod extends to drive the screen plate to adjust the angle; two gathering frames are disposed at the bottom of the screen plate, and a first discharge port is disposed between the two gathering frames; two fans are disposed at the top of the processing box, and each fan has a duct at its input end, and a filter box is disposed at the output end of the fan.

[0006] Optionally, in one possible implementation, the top of the processing box is provided with a feed inlet, which is located at the top of the screen plate. A partition is provided on one side of the screen plate, which is located at the top of the first discharge port to block the material conveyed by the screen plate. One end of the guide tube is provided with a suction cover, which is located at the bottom of the screen plate. The filter box has two through holes on the side facing the blower, and each through hole has a connecting pipe on its outer side. One end of each connecting pipe extends to the output end of the blower. The side of the gathering frame away from the screen plate is provided with a second discharge port. A maintenance cover is provided on one side of the processing box.

[0007] The technical effects and advantages of this utility model are as follows: By adjusting the angle of the screen plate driven by an electric push rod, the tilt angle can be increased for sticky materials and decreased for fine sorting, solving the problems of clogging and incomplete sorting caused by the fixed tilt angle of the screen in existing air classifiers; relying on the independent wind speed adjustment of the dual fans, the wind speed can be lowered for light impurities and increased for slightly heavier impurities, avoiding the material loss or impurity residue problems caused by the fixed wind speed of existing equipment. The overall structure takes into account the flexible adaptation of tilt angle and wind speed, which can meet the multi-material sorting needs of different fields such as grain, medicinal materials, and food, and improve the versatility and sorting efficiency of the equipment. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0009] Figure 1 This is a front view of the overall structure of this utility model.

[0010] Figure 2 This is a side view of the overall structure of this utility model.

[0011] Figure 3 This is a schematic diagram of the partition, gathering frame, fan, duct, first discharge port and extraction cover of this utility model.

[0012] Figure 4 This is a schematic diagram of the filter box, through hole, and connecting pipe of this utility model.

[0013] The attached diagram is labeled as follows: 1. Processing box; 2. Screen plate; 3. Electric push rod; 4. Feed inlet; 5. Gathering frame; 6. First discharge port; 7. Baffle plate; 8. Fan; 9. Guide tube; 10. Extraction cover; 11. Filter box; 12. Through hole; 13. Connecting pipe; 14. Second discharge port; 15. Inspection cover. Detailed Implementation

[0014] 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.

[0015] This embodiment discloses a combined air classifier with adjustable tilt angle and wind speed, which aims to solve the problem that existing air classifiers have fixed screen tilt angles and non-adjustable wind speeds, making them unable to adapt to the air classification needs of different materials.

[0016] like Figure 1 , Figure 2 As shown, the combined air classifier includes a processing box 1, and a feed inlet 4 is provided on the top of the processing box 1. The feed inlet 4 is located on the top of the screen plate 2 and is used to convey the material to be air-classified into the equipment.

[0017] The screen plate 2 is installed inside the processing box 1, with one end inclined downwards and the top hinged to the processing box 1. An electric push rod 3 is installed at the bottom of the screen plate 2. The output end of the electric push rod 3 extends to the bottom of the screen plate 2 and is slidably connected thereto. The screen plate 2 can be driven to rotate around the hinge point by the extension and retraction of the output end of the electric push rod 3, so as to realize the tilt angle adjustment.

[0018] like Figure 2 , Figure 3 As shown, the bottom end of the screen plate 2 is provided with two gathering frames 5 for collecting materials after air separation by the screen plate 2. A first discharge port 6 is provided between the two gathering frames 5 for specific materials to be discharged. A partition 7 is installed on one side of the screen plate 2. The partition 7 is located on top of the first discharge port 6 and can block the materials conveyed by the screen plate 2 to avoid material mixing.

[0019] Two fans 8 are installed on the top of the processing box 1. The input end of each fan 8 is connected to a duct 9, and one end of each duct 9 is equipped with an extraction hood 10. The extraction hood 10 is located at the bottom of the screen plate 2 and is used to extract impurities generated during the air separation process. The output end of the fan 8 is connected to a filter box 11, such as... Figure 4As shown, the filter box 11 has two through holes 12 on the side facing the fan 8. Each through hole 12 has a connecting pipe 13 on its outer side. One end of each connecting pipe 13 extends to the output end of the fan 8, thereby connecting the fan 8 and the filter box 11.

[0020] In addition, a second discharge port 14 is provided on the side of the gathering frame 5 away from the screen plate 2, and an inspection cover 15 is provided on one side of the processing box 1 to facilitate equipment maintenance and repair.

[0021] The specific working principle is as follows: Adjust the tilt angle of the screen plate 2 according to the characteristics of the material to be air-separated. When dealing with sticky materials that are easy to clog the screen, control the extension of the output end of the electric push rod 3 to increase the tilt angle of the screen plate 2 and accelerate the downward speed of the material. When performing fine air separation, shorten the output end of the electric push rod 3 to reduce the tilt angle and extend the residence time of the material on the screen plate 2.

[0022] The material to be air-separated falls into the screen plate 2 through the feed pipe 4 and slides down the screen plate 2 under the action of gravity. During the process, particles that meet the screen mesh size pass through the screen, while the remaining particles continue to slide down.

[0023] The fan speed of the blower 8 is adjusted according to the type of impurities. A low fan speed is used when blowing away light impurities, and a high fan speed is used when blowing away slightly heavier impurities. The blower 8 extracts impurities through the extraction hood 10 and the duct 9. The impurities enter the filter box 11 for filtration and collection through the connecting pipe 13 and the through hole 12.

[0024] After air separation, different materials are discharged through the first discharge port 6 and the second discharge port 14 respectively, completing the air separation process.

[0025] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A combined air classifier with adjustable tilt angle and wind speed, comprising a processing box (1), characterized in that: The processing box (1) is equipped with an air separation component; The air separation component includes a screen plate (2) disposed in the processing box (1). One end of the screen plate (2) is inclined downward, and the top of the screen plate (2) is hinged to the processing box (1). An electric push rod (3) is disposed at the bottom of the screen plate (2). The output end of the electric push rod (3) extends to the bottom of the screen plate (2) and slides with the screen plate (2) so that the output end of the electric push rod (3) extends to drive the screen plate (2) to adjust the angle. The bottom end of the screen plate (2) is provided with two gathering frames (5), and a first discharge port (6) is provided between the two gathering frames (5). The top of the processing box (1) is provided with two fans (8), and the input end of each fan (8) is provided with a duct (9). The output end of the fan (8) is provided with a filter box (11).

2. The adjustable tilt angle and wind speed combined air classifier according to claim 1, characterized in that: The top of the processing box (1) is provided with a feed inlet (4), which is located on the top of the screen plate (2).

3. The adjustable tilt angle and wind speed combined air classifier according to claim 1, characterized in that: A partition (7) is provided on one side of the screen plate (2). The partition (7) is located at the top of the first discharge port (6) to block the material conveyed by the screen plate (2).

4. The adjustable tilt angle and wind speed combined air classifier according to claim 1, characterized in that: One end of the conduit (9) is provided with an extraction cover (10), which is located at the bottom end of the screen plate (2).

5. The adjustable tilt angle and wind speed combined air classifier according to claim 1, characterized in that: The filter box (11) has two through holes (12) on the side facing the fan (8), and each through hole (12) is provided with a connecting pipe (13) on the outside.

6. The adjustable tilt angle and wind speed combined air classifier according to claim 5, characterized in that: One end of each of the two connecting pipes (13) extends to the output end of the fan (8).

7. The adjustable tilt angle and wind speed combined air classifier according to claim 1, characterized in that: The gathering frame (5) is provided with a second discharge port (14) on the side away from the screen plate (2), and the processing box (1) is provided with an inspection cover (15) on one side.

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