A multi-stage screening device for protein feed

Abstract

The utility model relates to the technical field of screening device, concretely to a protein feed multistage screening device, the centre place fixed connection of driving gear has motor, the both sides of driving gear are provided with first rack and second rack respectively, the upper end fixed connection of first rack and second rack has upper joint block, the upper end fixed connection of upper joint block has jacking rod, the upper end of jacking rod is connected with screening board axle, motor drives driving gear rotation, because driving gear only sets up the tooth in the half of self outer wall, therefore, when driving gear and first rack meshing process, will drive jacking rod through upper joint block and push up screening board, make the end of screening board tilt upward, when driving gear and second rack meshing process, will drive jacking rod through upper joint block and pull down screening board, therefore through the rotation of driving gear continuously, drive the end of screening board and keep on vibrating up and down, auxiliary screening, improved screening efficiency.

Description

Technical Field

[0001] This utility model relates to the field of screening device technology, specifically a multi-stage screening device for protein feed. Background Technology

[0002] Animal protein feed is a type of protein feed, mainly including fish meal, meat meal, insect meal, milk, dairy products, hydrolyzed protein, and other animal products. Animal protein feed needs to be screened during production.

[0003] In protein feed screening equipment, the screen surface is usually inclined, and the inclination angle of the screen surface has a direct impact on the flow speed of the material on the screen surface. However, the inclination angle of existing multi-stage protein feed screening devices is fixed, which may make the flow speed of the material on the screen surface too slow, causing the material to accumulate on the screen holes and making it difficult to form an effective screening motion, thereby reducing the screening efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a multi-stage screening device for protein feed, thereby solving the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage screening device for protein feed, comprising an outer frame and a side frame installed on the inner wall of the outer frame. A feed hopper is fixedly connected to the upper end of the outer frame, and a screening plate is axially connected to the inner wall of the side frame. A reciprocating lifting mechanism is provided at the lower end of the screening plate. The reciprocating lifting mechanism includes a drive gear rotatably connected to the inner wall of the side frame. A motor is fixedly connected to the center of the drive gear. A first rack and a second rack are respectively provided on both sides of the drive gear. An upper connecting block is fixedly connected to the upper end of the first rack and the second rack. A lifting rod is fixedly connected to the upper end of the upper connecting block. The upper end of the lifting rod is connected to the screen plate shaft.

[0006] Furthermore, one end of the screening plate connected to the lifting rod is slidably connected to the inner wall of the side mounting frame, and the end of the screening plate away from the lifting rod is axially connected to the inner wall of the side mounting frame.

[0007] Furthermore, the first rack and the second rack have the same structure and are symmetrically distributed about the center of the driving gear.

[0008] Furthermore, the drive gear has teeth on only half of its outer wall, and the drive gear meshes with the first rack and the second rack respectively.

[0009] Furthermore, a first collection box is provided at the lower end of the screening plate, and a second collection box is provided at one end of the side mounting bracket connected to the screen plate shaft.

[0010] Furthermore, the inner wall of the screening plate is equipped with a fine screen and a coarse screen, and two sets of the first collection box are provided, with the two sets of first collection boxes corresponding to the lower ends of the fine screen and the coarse screen, respectively.

[0011] Furthermore, both the fine and coarse screens are components made of beryllium bronze.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention proposes a multi-stage screening device for protein feed. A motor drives a drive gear to rotate. Since the drive gear only has teeth on half of its outer wall, when the drive gear meshes with the first toothed rod, it drives the lifting rod to lift the screening plate via the upper connecting block, causing one end of the screening plate to tilt upwards. When the drive gear meshes with the second toothed rod, it drives the lifting rod to pull the screening plate downwards via the upper connecting block. Therefore, the continuous rotation of the drive gear causes one end of the screening plate to vibrate up and down continuously, assisting screening and improving screening efficiency. This solves the problem of existing multi-stage screening devices for protein feed having a fixed tilt angle, which may cause the material to flow too slowly on the screen surface, leading to material accumulation on the screen holes and making it difficult to form effective screening motion, thus reducing screening efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the overall planar structure of the present invention;

[0016] Figure 3 This is a schematic diagram of the reciprocating lifting mechanism of this utility model;

[0017] Figure 4 This is a schematic diagram of the coarse and fine screen structures of this utility model.

[0018] In the diagram: 1. Outer frame; 2. Side frame; 3. Feed hopper; 4. Screening plate; 5. First collection box; 6. Second collection box; 7. Reciprocating lifting mechanism; 71. Drive gear; 72. First rack; 73. Second rack; 74. Upper connecting block; 75. Lifting rod; 8. Fine screen; 9. Coarse screen. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-4 To address the problem that existing multi-stage screening devices for protein feed have a fixed tilt angle, which may result in excessively slow material flow on the screen surface, leading to material accumulation on the screen openings and hindering effective screening, thus reducing screening efficiency, the following preferred technical solution is provided:

[0021] A multi-stage screening device for protein feed includes an outer frame 1 and a side frame 2 installed on the inner wall of the outer frame 1. A feed hopper 3 is fixedly connected to the upper end of the outer frame 1. A screening plate 4 is axially connected to the inner wall of the side frame 2. A reciprocating lifting mechanism 7 is provided at the lower end of the screening plate 4. The reciprocating lifting mechanism 7 includes a drive gear 71 rotatably connected to the inner wall of the side frame 2. A motor is fixedly connected to the center of the drive gear 71. A first toothed rod 72 and a second toothed rod 73 are respectively provided on both sides of the drive gear 71. An upper connecting block 74 is fixedly connected to the upper end of the first toothed rod 72 and the second toothed rod 73. A lifting rod 75 is fixedly connected to the upper end of the upper connecting block 74. The upper end of the lifting rod 75 is axially connected to the screening plate 4.

[0022] One end of the screening plate 4 connected to the lifting rod 75 is slidably connected to the inner wall of the side mounting frame 2, and the other end of the screening plate 4 away from the lifting rod 75 is axially connected to the inner wall of the side mounting frame 2. The first toothed rod 72 and the second toothed rod 73 have the same structure and are symmetrically distributed about the center of the drive gear 71. The drive gear 71 has teeth on only half of its outer wall. The drive gear 71 meshes with the first toothed rod 72 and the second toothed rod 73 respectively.

[0023] A first collection box 5 is provided at the lower end of the screening plate 4, and a second collection box 6 is provided at one end of the side mounting bracket 2 that is axially connected to the screening plate 4. A fine screen 8 and a coarse screen 9 are installed on the inner wall of the screening plate 4. There are two sets of first collection boxes 5, and the two sets of first collection boxes 5 are respectively located at the lower ends of the fine screen 8 and the coarse screen 9. Both the fine screen 8 and the coarse screen 9 are components made of beryllium bronze.

[0024] Specifically, when screening is required, the material is poured into the feed hopper 3 and falls onto the screening plate 4 for screening. At this time, the motor is turned on, and the motor drives the drive gear 71 to rotate. Since the drive gear 71 only has teeth on half of its outer wall, when the drive gear 71 meshes with the first toothed rod 72, it will drive the lifting rod 75 to lift the screening plate 4 through the upper connecting block 74, causing one end of the screening plate 4 to tilt upward. When the drive gear 71 meshes with the second toothed rod 73, it will drive the lifting rod 75 to pull down the screening plate 4 through the upper connecting block 74. Therefore, the continuous rotation of the drive gear 71 drives one end of the screening plate 4 to vibrate up and down continuously, assisting screening and improving screening efficiency. This solves the problem that the fixed tilt angle of the existing multi-stage screening device for protein feed may cause the material to flow too slowly on the screen surface, resulting in the material to accumulate on the screen holes and making it difficult to form an effective screening motion, thereby reducing screening efficiency.

[0025] When the material falls into the screening plate 4 for screening, it will first fall onto the fine screen 8 for screening, and then pass through the coarse screen 9 for screening. It will be collected by two sets of first collection boxes 5. Finally, the material that cannot be screened by the coarse screen 9 will slide into the second collection box 6 for collection, thus achieving the purpose of multi-stage screening. Both the fine screen 8 and the coarse screen 9 are made of beryllium bronze. Beryllium bronze has strong elasticity. The fine screen 8 and the coarse screen 9 will use the impact force of the falling material to bounce the material up, thereby further improving the screening efficiency.

[0026] In summary: When the motor is turned on, it drives the drive gear 71 to rotate. Since the drive gear 71 only has teeth on half of its outer wall, when the drive gear 71 meshes with the first gear 72, it drives the lifting rod 75 to lift the screening plate 4 through the upper connecting block 74, causing one end of the screening plate 4 to tilt upwards. When the drive gear 71 meshes with the second gear 73, it drives the lifting rod 75 to pull down the screening plate 4 through the upper connecting block 74. Therefore, the continuous rotation of the drive gear 71 causes one end of the screening plate 4 to vibrate up and down continuously, assisting in screening. When the material falls into the screening plate 4 for screening, it will first fall onto the fine screen 8 for screening, and then pass through the coarse screen 9 for screening. It will be collected by two sets of first collection boxes 5. Finally, the material that cannot be screened by the coarse screen 9 will slide into the second collection box 6 for collection, thus achieving the purpose of multi-stage screening.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] 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 multi-stage screening device for protein feed, comprising an outer frame (1) and a side frame (2) installed on the inner wall of the outer frame (1), characterized in that: The upper end of the outer frame (1) is fixedly connected to the feed hopper (3), and the inner wall of the side frame (2) is axially connected to the screening plate (4). The lower end of the screening plate (4) is provided with a reciprocating lifting mechanism (7). The reciprocating lifting mechanism (7) includes a drive gear (71) rotatably connected to the inner wall of the side frame (2). The center of the drive gear (71) is fixedly connected to a motor. The two sides of the drive gear (71) are respectively provided with a first rack (72) and a second rack (73). The upper ends of the first rack (72) and the second rack (73) are fixedly connected to an upper connecting block (74). The upper end of the upper connecting block (74) is fixedly connected to a lifting rod (75). The upper end of the lifting rod (75) is axially connected to the screening plate (4).

2. The multi-stage screening device for protein feed according to claim 1, characterized in that: One end of the screening plate (4) connected to the lifting rod (75) is slidably connected to the inner wall of the side mounting frame (2), and the other end of the screening plate (4) away from the lifting rod (75) is axially connected to the inner wall of the side mounting frame (2).

3. The multi-stage screening device for protein feed according to claim 1, characterized in that: The first rack (72) and the second rack (73) have the same structure and are symmetrically distributed about the center of the drive gear (71).

4. The multi-stage screening device for protein feed according to claim 1, characterized in that: The drive gear (71) has teeth on only half of its outer wall, and the drive gear (71) meshes with the first rack (72) and the second rack (73) respectively.

5. The multi-stage screening device for protein feed according to claim 1, characterized in that: The lower end of the screening plate (4) is provided with a first collection box (5), and the end of the screening plate (4) shaft connected to the side mounting bracket (2) is provided with a second collection box (6).

6. The multi-stage screening device for protein feed according to claim 5, characterized in that: The inner wall of the screening plate (4) is equipped with a fine screen (8) and a coarse screen (9). The first collection box (5) is provided in two sets, and the two sets of first collection boxes (5) are respectively located at the lower ends of the fine screen (8) and the coarse screen (9).

7. A multi-stage screening device for protein feed according to claim 6, characterized in that: Both the fine screen (8) and the coarse screen (9) are components made of beryllium bronze.

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