A raw material screening device for preparing a composite antioxidant

Abstract

The utility model discloses a raw material screening device for composite antioxidant preparation, including screening box, the outer wall hinged of screening box has two door leaves, the inner wall sliding connection of screening box has two U -shaped sheets, two U -shaped sheets all place have screening box, one side inner wall fixed connection of screening box has six telescopic links, and every three mutually coordinated telescopic link's other end all with corresponding U -shaped sheet's one side wall fixed connection, and the outer wall of every telescopic link all is equipped with spring, and the both ends of every spring all respectively with the one side inner wall of screening box and corresponding U -shaped sheet's one side wall elasticity is connected, and the other side wall of two U -shaped sheets all is fixed with the moving link. Its setting reciprocating screw rod, guide rod and slider etc. structure, can drive the reciprocating movement of feeding hopper, and then make the raw material more evenly fall into the upper screening box, avoid raw material local accumulation, improve screening efficiency and precision.

Description

Technical Field

[0001] This utility model relates to the field of screening device technology, and in particular to a raw material screening device for the preparation of composite antioxidants. Background Technology

[0002] In the preparation of compound antioxidants, the purity and particle size uniformity of raw materials affect the antioxidant performance, stability and application effect of the product. Therefore, raw material screening is a key preliminary step in the preparation process of compound antioxidants. With the increasing demand for compound antioxidants in the food, pharmaceutical and chemical industries, as well as the continuous improvement of product quality standards, the industry has put forward higher requirements for the efficiency, accuracy and automation of raw material screening. However, most screening devices use a fixed inlet structure, and the raw materials fall directly onto the screen surface through the feed hopper, which easily leads to accumulation in local areas of the screen. This results in insufficient utilization of the effective screening area of ​​the screen. The accumulated raw materials not only clog the screen holes, but also prevent the lower layer of raw materials from making full contact with the screen, requiring frequent shutdowns for cleaning, which seriously affects the continuity of screening. Therefore, we need to consider how to solve this problem. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a raw material screening device for the preparation of composite antioxidants. The device is equipped with a reciprocating screw, guide rod, and slider, which can drive the feed hopper to move back and forth, thereby allowing the raw materials to fall more evenly into the upper screening box, avoiding local accumulation of raw materials, and improving screening efficiency and accuracy.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A raw material screening device for preparing a composite antioxidant includes a screening box. Two door panels are hinged to the outer wall of the screening box. Two U-shaped plates are slidably connected to the inner wall of the screening box. Screening boxes are placed on each of the two U-shaped plates. Six telescopic rods are fixedly connected to one inner wall of the screening box. The other end of every three mutually cooperating telescopic rods is fixedly connected to one side wall of the corresponding U-shaped plate. A spring is fitted onto the outer wall of each telescopic rod. Both ends of each spring are elastically connected to one inner wall of the screening box and one side wall of the corresponding U-shaped plate, respectively. The other side walls of the two U-shaped plates are fixedly connected to... The screen is fixedly connected to two movable rods, the other ends of which pass through the screening box and are fixedly connected to push plates. Two fixed plates are fixedly connected to one outer wall of the screening box, and a rotating shaft is rotatably connected between the two fixed plates. Two cams are fixedly connected to the outer wall of the rotating shaft, and the two cams cooperate with the corresponding push plates. Two guide plates are fixedly connected to the inner walls of both sides of the screening box. A collection box is placed at the bottom of the screening box. A feed inlet is opened at the top of the screening box, and a feed hopper is provided at the feed inlet. A moving mechanism for moving the feed hopper is provided at the top of the screening box.

[0005] Preferably, each of the two U-shaped plates has a mounting groove on both side walls, a threaded sleeve is fixedly connected in each mounting groove, a threaded rod is threadedly connected in each threaded sleeve, a limit block is fixedly connected to one end of each threaded rod, a limit groove that mates with the corresponding limit block is opened on both side walls of the two screening boxes, and a knob is fixedly connected to the other end of each threaded rod.

[0006] Preferably, a first motor is mounted on the upper end of one of the fixing plates, and the end of the output shaft of the first motor passes through one of the fixing plates and is fixedly connected to the upper end of the rotating shaft.

[0007] Preferably, the moving mechanism includes two connecting plates fixedly connected to the upper end of the screening box. Slide grooves are provided on opposite sides of the two connecting plates. A reciprocating screw is rotatably connected between the inner walls of the two sides of one slide groove, and a guide rod is fixedly connected between the inner walls of the two sides of the other slide groove. Slider blocks are slidably connected to the inner walls of both slide grooves. One slider is threadedly connected to the reciprocating screw, and the other slider is slidably connected to the guide rod. The opposite ends of the two sliders are fixedly connected to the feed hopper.

[0008] Preferably, a second motor is mounted on the outer wall of one of the connecting plates, and the output shaft of the second motor extends into the interior of one of the slide grooves and is fixedly connected to one end of a reciprocating lead screw.

[0009] Preferably, baffles are fixedly connected to both sides of the feed hopper, and the two baffles cooperate with the feed inlet.

[0010] Compared with the prior art, the advantages of this utility model are as follows: 1. The structure includes a reciprocating screw, guide rod, and slider. The reciprocating screw is driven to rotate by a second motor, which enables the two sliders to reciprocate along the corresponding grooves. This, in turn, drives the feed hopper to move smoothly above the feed inlet, avoiding local accumulation of raw materials, improving the uniformity of feeding, and enhancing the screening accuracy. 2. The structure includes telescopic rods, push plates, and cams. The cams rotate periodically to push the push plates, which in turn drive the U-shaped plates and screening boxes to reciprocate. This allows the raw materials to fully contact the sieve holes within the screening box, avoiding localized accumulation and screening dead zones. This enables continuous and uniform screening of the raw materials, improving screening efficiency and grading accuracy. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the raw material screening device for preparing composite antioxidants proposed in this utility model; Figure 2 for Figure 1 A schematic diagram of the front cross-section; Figure 3 for Figure 2 Enlarged view of point A; Figure 4 for Figure 1 A schematic diagram of the left-side cross-section; Figure 5 for Figure 1 The diagram on the right; Figure 6 for Figure 1 A schematic diagram of the upper cross-section.

[0012] In the diagram: 1. Screening box, 2. Door panel, 3. U-shaped plate, 4. Screening box, 5. Threaded sleeve, 6. Threaded rod, 7. Limiting block, 8. Limiting groove, 9. Knob, 10. Telescopic rod, 11. Spring, 12. Moving rod, 13. Push plate, 14. Fixed plate, 15. Rotating shaft, 16. Cam, 17. First motor, 18. Guide plate, 19. Collection box, 20. Feed inlet, 21. Feed hopper, 22. Connecting plate, 23. Slide groove, 24. Reciprocating screw, 25. Guide rod, 26. Slider, 27. Second motor, 28. Baffle. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] Reference Figures 1-6A raw material screening device for preparing a composite antioxidant includes a screening box 1. Two door panels 2 are hinged to the outer wall of the screening box 1, and two U-shaped plates 3 are slidably connected to the inner wall of the screening box 1. Screening boxes 4 are placed on each of the two U-shaped plates 3. Multiple screening holes are provided at the bottom of both U-shaped plates 3 and the two screening boxes 4. The aperture of the screening holes on the upper screening box 4 and the corresponding U-shaped plate 3 is larger than that on the lower screening box 4 and the corresponding U-shaped plate 3, to achieve graded screening of the raw materials. Mounting grooves are provided on both side walls of the two U-shaped plates 3, and each mounting groove contains... Each of the two screening boxes 4 is fixedly connected with a threaded sleeve 5, and a threaded rod 6 is threadedly connected inside each threaded sleeve 5. A limit block 7 is fixedly connected to one end of each threaded rod 6. Limiting grooves 8 that cooperate with the corresponding limit blocks 7 are opened on both side walls of the two screening boxes 4. A knob 9 is fixedly connected to the other end of each threaded rod 6. Rotating the knob 9 can drive the threaded rod 6 to rotate inside the threaded sleeve 5, thereby pushing the limit block 7 to insert into or exit from the limit groove 8, realizing the installation and disassembly of the screening box 4 on the U-shaped plate 3, which facilitates the subsequent cleaning, maintenance or replacement of screening boxes 4 of different specifications. Six telescopic rods 10 are fixedly connected to one inner wall of the screening box 1. The other end of every three interlocking telescopic rods 10 is fixedly connected to one side wall of the corresponding U-shaped plate 3. The telescopic rods 10 serve as guides and supports, ensuring that the U-shaped plate 3 slides in a straight line within the screening box 1. A spring 11 is fitted on the outer wall of each telescopic rod 10. Both ends of each spring 11 are elastically connected to one inner wall of the screening box 1 and one side wall of the corresponding U-shaped plate 3, respectively. Movable rods 12 are fixedly connected to the other side walls of the two U-shaped plates 3. The other ends of the two movable rods 12 are respectively connected to... A screening box 1 is inserted and a push plate 13 is fixedly connected to it. Two fixed plates 14 are fixedly connected to one side of the outer wall of the screening box 1. A rotating shaft 15 is rotatably connected between the two fixed plates 14. Two cams 16 are fixedly connected to the outer wall of the rotating shaft 15. The two cams 16 cooperate with the corresponding push plate 13. When the cam 16 pushes the push plate 13 to drive the moving rod 12 to move the U-shaped plate 3, the spring 11 is compressed. When the cam 16 rotates to the non-pushing position, the spring 11 returns to its original state and pulls the U-shaped plate 3 to reset, thereby realizing the reciprocating motion of the U-shaped plate 3 and improving the raw material screening efficiency. One of the fixed plates 14 is equipped with a first motor 17, which is a servo motor. The output shaft of the first motor 17 passes through one of the fixed plates 14 and is fixedly connected to the upper end of the rotating shaft 15. Two guide plates 18 are fixedly connected to the inner walls of both sides of the screening box 1. A collection box 19 is placed at the bottom of the screening box 1. A feed inlet 20 is opened at the upper end of the screening box 1. A feed hopper 21 is set at the feed inlet 20. Two guide plates 18 are located below the feed inlet 20 and can guide the raw materials falling from the feed hopper 21 to the screening box 4 above. The other two guide plates 18 are located between two U-shaped plates 3 and can guide the raw materials screened by the upper screening box 4 to the screening box 4 below, preventing the raw materials from scattering to other areas inside the screening box 1 and ensuring the continuity and integrity of the screening process. The upper end of the screening box 1 is equipped with a moving mechanism for moving the feed hopper 21. The moving mechanism includes two connecting plates 22 fixedly connected to the upper end of the screening box 1. Each of the two connecting plates 22 has a groove 23 on its opposite sides. A reciprocating screw 24 is rotatably connected between the inner walls of one groove 23, and a guide rod 25 is fixedly connected between the inner walls of the other groove 23. Sliding blocks 26 are slidably connected to the inner walls of both grooves 23. One sliding block 26 is threadedly connected to the reciprocating screw 24, and the other sliding block 26 is slidably connected to the guide rod 25. The opposite ends of the two sliding blocks 26 are connected to the feed hopper 21. The hopper 21 is fixedly connected, and a second motor 27 is installed on the outer wall of one of the connecting plates 22. The second motor 27 is a servo motor. The output shaft of the second motor 27 extends into the interior of one of the slide grooves 23 and is fixedly connected to one end of the reciprocating screw 24. The second motor 27 drives the reciprocating screw 24 to make the hopper 21 move back and forth, which can feed the raw materials into the screening box 1 more evenly and avoid the accumulation of raw materials affecting the screening efficiency and accuracy. Both sides of the hopper 21 are fixedly connected with baffles 28. The two baffles 28 cooperate with the feed port 20 to prevent the raw materials from spilling and reduce the waste of raw materials.

[0015] In this invention, firstly, the raw materials for preparing the composite antioxidant to be screened are poured into the feed hopper 21. Then, the second motor 27 is started, which drives the reciprocating screw 24 to rotate. With the cooperation of the guide rod 25, the two sliders 26 reciprocate along the corresponding slide groove 23, thereby driving the feed hopper 21 to move back and forth above the feed inlet 20. This allows the raw materials to fall more evenly into the screening box 4 above through the feed inlet 20, avoiding local accumulation of raw materials and reducing problems such as incomplete screening and low efficiency caused by raw material accumulation. Next, the first motor 17 is started, which drives the rotating shaft 15 to rotate. The two cams 16 rotate accordingly. When the protruding part of the cam 16 contacts the push plate 13, it will push the push plate 13 to move closer to the screening box 1, thereby driving the moving rod 12 and the U-shaped plate 3 to move. At this time, the telescopic rod 10 is compressed and the spring 11 is compressed. When the protruding part of the cam 16 leaves the push plate 13, under the elastic reset action of the spring 11, the U-shaped plate 3 is reset under the guidance of the telescopic rod 10, thereby realizing the reciprocating motion of the two U-shaped plates 3. During the reciprocating motion of the U-shaped plate 3, the raw materials in the upper screening box 4 are subjected to screening holes. The smaller particles fall into the lower screening box 4 through the screening holes, while the larger particles remain in the upper screening box 4. The lower screening box 4 further screens the raw materials, and the smaller particles fall into the collection box 19 through its screening holes. The particles that meet the size requirements remain in the lower screening box 4. After screening is completed, turn off the first motor 17 and the second motor 27, open the door panel 2, and rotate the knob 9 to make the limit block 7 exit from the limit groove 8. Then the screening box 4 can be removed from the U-shaped plate 3. Collect the large-particle raw materials in the upper screening box 4, the qualified raw materials in the lower screening box 4, and the small-particle raw materials in the collection box 19 to complete the entire raw material screening process.

[0016] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A raw material screening device for preparing composite antioxidants, comprising a screening box (1), characterized in that, The outer wall of the screening box (1) is hinged with two door panels (2), and the inner wall of the screening box (1) is slidably connected with two U-shaped plates (3). Each of the two U-shaped plates (3) has a screening box (4) placed on it. Six telescopic rods (10) are fixedly connected to one side of the inner wall of the screening box (1). The other end of every three telescopic rods (10) that cooperate with each other is fixedly connected to one side wall of the corresponding U-shaped plate (3). Each telescopic rod (10) has a spring (11) sleeved on its outer wall. Both ends of each spring (11) are elastically connected to one side wall of the screening box (1) and one side wall of the corresponding U-shaped plate (3), respectively. The other side wall of each of the two U-shaped plates (3) is fixedly connected with a moving rod (12). The other ends of the two moving rods (12) pass through the screening box (1) and are fixedly connected to the push plate (13). Two fixed plates (14) are fixedly connected to one side of the outer wall of the screening box (1). A rotating shaft (15) is rotatably connected between the two fixed plates (14). Two cams (16) are fixedly connected to the outer wall of the rotating shaft (15). The two cams (16) cooperate with the corresponding push plate (13). Two guide plates (18) are fixedly connected to both sides of the inner wall of the screening box (1). A collection box (19) is placed at the bottom of the screening box (1). A feed inlet (20) is opened at the top of the screening box (1). A feed hopper (21) is provided at the feed inlet (20). The upper end of the screening box (1) is provided with a moving mechanism for moving the feed hopper (21).

2. The raw material screening device for preparing a composite antioxidant according to claim 1, characterized in that, The two U-shaped plates (3) have mounting grooves on both sides, and each mounting groove is fixedly connected with a threaded sleeve (5). Each threaded sleeve (5) is threadedly connected with a threaded rod (6). One end of each threaded rod (6) is fixedly connected with a limiting block (7). The two screening boxes (4) have limiting grooves (8) that cooperate with the corresponding limiting blocks (7) on both sides. The other end of each threaded rod (6) is fixedly connected with a knob (9).

3. The raw material screening device for preparing a composite antioxidant according to claim 1, characterized in that, A first motor (17) is mounted on the upper end of one of the fixed plates (14). The output shaft of the first motor (17) passes through one of the fixed plates (14) and is fixedly connected to the upper end of the rotating shaft (15).

4. The raw material screening device for preparing a composite antioxidant according to claim 1, characterized in that, The moving mechanism includes two connecting plates (22) fixedly connected to the upper end of the screening box (1). Slide grooves (23) are provided on opposite sides of the two connecting plates (22). A reciprocating screw (24) is rotatably connected between the inner walls of the two sides of one slide groove (23). A guide rod (25) is fixedly connected between the inner walls of the two sides of the other slide groove (23). Slider blocks (26) are slidably connected to the inner walls of the two slide grooves (23). One slider (26) is threadedly connected to the reciprocating screw (24), and the other slider (26) is slidably connected to the guide rod (25). The opposite ends of the two sliders (26) are fixedly connected to the feed hopper (21).

5. The raw material screening device for preparing a composite antioxidant according to claim 4, characterized in that, A second motor (27) is mounted on the outer wall of one of the connecting plates (22). The output shaft of the second motor (27) extends into the interior of one of the grooves (23) and is fixedly connected to one end of the reciprocating screw (24).

6. The raw material screening device for preparing a composite antioxidant according to claim 1, characterized in that, Both sides of the feed hopper (21) are fixedly connected with baffles (28), and the two baffles (28) cooperate with the feed inlet (20).

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