Uniform feeding device of winnowing sieve

Abstract

The uniform feeding device comprises the winnowing screen and a feeding hopper arranged on the winnowing screen, horizontal sliding grooves are formed in the position, close to the bottom, of the inner wall of the feeding hopper in a front-back symmetry mode, a movable frame is connected between the two sliding grooves in a sliding mode, and a knockout plate is vertically arranged on the upper surface of the movable frame. Shutter grid plates are horizontally arranged on the two sides of the movable frame, a push rod is horizontally arranged on one side of the feeding hopper in a penetrating mode, and the end, located in the feeding hopper, of the push rod is connected with the sides, away from the movable frame, of the shutter grid plates. According to the utility model, the knockout plate and the shutter grid plate are arranged, the push rod pushes the movable frame, the knockout plate and the shutter grid plate to do reciprocating motion, and the reciprocating motion of the movable frame, the knockout plate and the shutter grid plate scatters grain particles conveyed to the middle position of the feeding hopper by the conveyor towards two sides, so that the grain particles are fully dispersed; the screening area in the winnowing screen is enlarged, the winnowing efficiency can be improved through dispersed grain particles, and separation of light impurities and dust is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of air selection screen equipment, in particular to a uniform feeding device for an air selection screen. Background Art

[0002] The wind separation screen is a device used to separate light impurities and dust from granular materials. It separates light impurities and dust from the granular materials by utilizing the effects of airflow and gravity. The separated granular materials are then screened by a screen to separate large and small particles. Due to its high screening efficiency, it is widely used in the grain processing industry.

[0003] When existing air separation screens screen grain particles, most of them use belt conveyors to transport the grain particles to the feed hopper on the air separation screen. The feed hopper of the air separation screen is relatively wide, while the width of the conveyor is generally not very large. Usually, the width of the feed hopper of the air separation screen is larger than the width of the belt conveyor. When the belt conveyor transports grain particles, the feed width is smaller than the screening area width of the air separation screen, resulting in waste of the screening area under the feed hopper on both sides of the belt conveyor, causing energy waste and insufficient. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a uniform feeding device for an air separation screen, which is used to solve the problem that the width of the air separation screen feed hopper is greater than the width of the belt conveyor, resulting in waste of the screening area below the feed hoppers on both sides of the belt conveyor.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A uniform feeding device for an air separation screen comprises an air separation screen and a feed hopper arranged on the air separation screen, horizontal slide grooves are symmetrically arranged at the inner wall of the feed hopper near the bottom, a movable frame is slidably connected between two groups of the slide grooves, a beating plate is vertically arranged on the upper surface of the movable frame, louver plates are horizontally arranged on both sides of the movable frame, a push rod is horizontally penetrated on one side of the feed hopper, and the end of the push rod located inside the feed hopper is connected to the side of the louver plate away from the movable frame.

[0007] Preferably, a dust-proof brush with bristles facing downward is provided on the top of the inner wall of the slide groove.

[0008] Preferably, a plurality of through grooves opening upward are equidistantly arranged on the top of the punching plate along the longitudinal direction.

[0009] Preferably, the upper surface of the louver plate is provided with longitudinal three-edge guide strips.

[0010] Preferably, the overall width of the two louver plates is no greater than half the width of the feed hopper discharge opening.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model provides a material beating plate and a louver plate, and a push rod pushes the movable frame, the material beating plate and the louver plate to move back and forth. The movable frame, the material beating plate and the louver plate move back and forth to scatter the grain particles transported by the conveyor to the middle position of the feed hopper to both sides, so that the grain particles are fully dispersed, which not only increases the screening area inside the air separation screen 1, but also the dispersed grain particles can improve the air separation efficiency, which is conducive to the separation of lighter impurities and dust, and solves the problem that the width of the feed hopper of the air separation screen is greater than the width of the belt conveyor, resulting in waste of the screening area below the feed hopper on both sides of the belt conveyor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the feed hopper of the utility model;

[0015] Figure 3 It is a partial enlarged view of the corresponding position of the louver plate of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the corresponding position of the slideway of the utility model.

[0017] In the figure: 1. air separation screen; 2. feed hopper; 3. slide; 301. dust-proof brush; 4. movable frame; 5. material beating plate; 501. through slot; 6. louver plate; 601. three-edged guide strip; 7. push rod. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figure 1-4 As shown, the utility model provides a technical solution: a uniform feeding device for an air separation screen, comprising an air separation screen 1 and a feeding hopper 2 arranged on the air separation screen 1, a horizontal chute 3 is symmetrically arranged front to back at a position of the inner wall of the feed hopper 2 near the bottom, and a dust-proof brush 301 with bristles facing downward is arranged on the top of the inner wall of the chute 3 to prevent grain particles from entering the chute 3.

[0020] A movable frame 4 is slidably connected between the two groups of slide grooves 3, and a material-beating plate 5 is vertically arranged on the upper surface of the movable frame 4. A plurality of through grooves 501 with openings facing upward are equidistantly arranged on the top of the material-beating plate 5 along the longitudinal direction to reduce the resistance generated during the movement of the material-beating plate 5. Louver plates 6 are horizontally arranged on both sides of the movable frame 4, and longitudinal three-edge guide strips 601 are arranged on the upper surface of the louver plates 6 to improve the dispersion effect of the grain particles on the louver plates 6 and avoid accumulation.

[0021] The overall width of the two louver plates 6 is no greater than half the width of the discharge port of the feed hopper 2. A push rod 7 is horizontally provided through one side of the feed hopper 2. One end of the push rod 7 located inside the feed hopper 2 is connected to the side of the louver plate 6 away from the movable frame 4.

[0022] Working principle: The push rod 7 pushes the movable frame 4, the beating plate 5 and the louver plate 6 inside the feed hopper 2 to move back and forth, and the grain particles transported by the conveyor to the middle position of the feed hopper 2 are scattered to both sides, so that the grain particles are fully dispersed, which not only increases the screening area inside the air separation screen 1, but the dispersed grain particles can also improve the air separation efficiency, which is conducive to the separation of lighter impurities and dust.

[0023] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wind selection screen uniform feeding device, comprising a wind selection screen (1) and a feeding hopper (2) arranged on the wind selection screen (1), characterized in that: Horizontal slide grooves (3) are symmetrically arranged at the front and rear positions of the inner wall of the feed hopper (2) near the bottom, a movable frame (4) is slidably connected between two groups of the slide grooves (3), a material beating plate (5) is vertically arranged on the upper surface of the movable frame (4), and louver plates (6) are horizontally arranged on both sides of the movable frame (4), and a push rod (7) is horizontally arranged through one side of the feed hopper (2), and one end of the push rod (7) located inside the feed hopper (2) is connected to a side of the louver plate (6) away from the movable frame (4).

2. The uniform feeding device for air separation screen according to claim 1 is characterized in that: A dust-proof brush (301) with bristles facing downwards is arranged on the top of the inner wall of the slide groove (3).

3. The uniform feeding device for air separation screen according to claim 1 is characterized in that: The top of the punching plate (5) is provided with a plurality of through grooves (501) opening upward at equal intervals in the longitudinal direction.

4. The uniform feeding device for air separation screen according to claim 1 is characterized in that: The upper surface of the louver plate (6) is provided with a longitudinal triangular guide strip (601).

5. The uniform feeding device for air separation screen according to claim 1 is characterized in that: The overall width of the two louver plates (6) is no greater than half the width of the discharge opening of the feed hopper (2).

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