Tobacco shred screening device

Abstract

The utility model provides a tobacco shred screening device which comprises a mounting frame, and a plurality of screening mechanisms are arranged on the mounting frame. Each screening mechanism comprises two guide rails, and an adjustable screening assembly and a fixed screening assembly are arranged on the two guide rails. The adjustable screening assembly comprises a screening roller, the screening roller comprises a supporting shaft, screening pieces are arranged on the supporting shaft, the two ends of the supporting shaft are rotationally connected with two supporting bases correspondingly, sliding blocks are fixedly arranged at the bottoms of the two supporting bases correspondingly, and the two sliding blocks are slidably connected with the two guide rails correspondingly. The fixed screening assembly comprises a screening roller, the screening roller comprises a supporting shaft, screening pieces are arranged on the supporting shaft, the two ends of the supporting shaft are rotationally connected with two supporting bases correspondingly, and the positions of the two supporting bases are fixed; a ball screw is rotationally arranged on the mounting frame and is in threaded connection with the supporting seat in each adjustable screening assembly; the screening pieces of the adjacent screening rollers are arranged in a staggered mode. The tobacco shred screening device with the adjustable screen holes has the advantages that the screen holes are not blocked, and the hole penetrating rate is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of tobacco machinery, and in particular relates to a tobacco shred screening device. Background Art

[0002] At present, most of the standard screening machines for making silk threads in cigarette factories use rocker-type or spring-plate linear vibrating screens imported from abroad, which can play the role of connection, transportation and selection in making silk threads. The vibrating screen is used for tobacco and tobacco flakes with a length of more than 1mm. The screen plate is made of punched steel plate, and the material flow is smooth, but the only drawback is that there are still problems of large hole leakage and small hole blockage, and there is a common phenomenon of either not screening through or leaking, and the screen holes are difficult to clean.

[0003] Therefore, a new screening device is needed to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a tobacco screening device to address the deficiencies of the prior art. The specific scheme is as follows:

[0005] A tobacco screening device comprises a mounting frame, on which a plurality of tilted screening mechanisms are arranged; each of the screening mechanisms comprises two guide rails arranged at intervals on the mounting frame, on which a plurality of adjustable screening components and a fixed screening component are arranged;

[0006] The adjustable screening assembly includes a screening roller, which includes a support shaft, on which a plurality of screening sheets are arranged, and the two ends of the supporting shaft are rotatably connected to two supporting seats, one of which is provided with an electric roller for driving the supporting shaft to rotate, and sliders are fixedly provided at the bottom of the two supporting seats, and the two sliders are respectively slidably connected to the two guide rails; The fixed screening assembly includes a screening roller, which includes a support shaft, on which a plurality of screening sheets are arranged, and the two ends of the supporting shaft are respectively rotatably connected to the two supporting seats, one of which is provided with an electric roller for driving the supporting shaft to rotate, and sliders are fixedly provided at the bottom of the two supporting seats, and the two sliders are respectively fixedly connected to the two guide rails; A ball screw is rotatably provided just above the two guide rails on the mounting frame, and the ball screw is provided with a plurality of threaded sections respectively screwed to the supporting seats in each of the adjustable screening assemblies, and the ball screw is driven to rotate by a servo motor; In the same group of screening mechanisms, the screening sheets of adjacent screening rollers are arranged in an alternating manner, and the screening sheets of each screening roller A first sieve hole is formed between two sieve sheets extending into adjacent sieve rollers; the sieve sheets of the sieve rollers in the fixed screening assembly in each group of the screening mechanisms are alternately arranged with the sieve sheets of the sieve rollers in the adjacent adjustable screening assembly in the adjacent screening mechanisms, and the sieve sheets of one sieve roller extend into between the two sieve sheets of the other sieve roller to form a second sieve hole; there are four groups of the screening mechanisms, and the inclination angle of each group of the screening mechanisms is 20-38°; the pitches of the threaded segments of the ball screw corresponding to each support seat in each of the screening mechanisms are different, and the pitch of the threaded segment on the ball screw close to the fixed screening assembly is set to a, and the pitches of the threaded segments on the ball screw gradually away from the fixed screening assembly are 2a, 3a...na respectively.

[0007] Based on the above, each group of the screening mechanisms includes three groups of adjustable screening components.

[0008] Based on the above, in the same screening mechanism, when the electric rollers driving the rotation of each supporting shaft are working, the areas of the screen holes formed between adjacent screen rollers are the same.

[0009] The utility model has substantial characteristics and progress compared with the prior art. Specifically, the utility model has the following advantages:

[0010] The utility model provides a tobacco screening device with adjustable sieve holes. Its structural design not only satisfies the requirement of adjustable sieve hole size, but also has the advantages of no clogging of sieve holes and high permeability compared with traditional vibrating screens during tobacco screening, so that both sheet tobacco and long tobacco can be screened smoothly on the production line. In addition, the structural design of the screening device can satisfy the requirement of online adjustable sieve holes, and the rotation speeds of two adjacent sieve rollers can also be adjusted, which is more convenient for online loosening of tobacco balls. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0012] Figure 2 It is a side view of the utility model.

[0013] Figure 3 It is a partial structural schematic diagram of the utility model.

[0014] In the figure: 100. mounting frame; 200. screening mechanism; 1. servo motor; 2. ball screw; 3. support seat; 4. slider; 5. guide rail; 6. electric drum; 7. screening roller; 7-1. screening sheet. DETAILED DESCRIPTION

[0015] The technical solution of the utility model is further described in detail below through specific implementation methods. Example

[0016] like Figure 1-3 As shown, the utility model provides a tobacco screening device, including a mounting frame 100, on which a plurality of tilted screening mechanisms 200 are arranged; each group of the screening mechanisms 200 includes two guide rails 5 arranged at intervals on the mounting frame 100, on which a plurality of adjustable screening components and a group of fixed screening components are arranged; the adjustable screening components include a screening roller 7, and the screening roller 7 includes a supporting shaft, on which a plurality of screening sheets 7-1 are arranged, and the two ends of the supporting shaft are respectively rotatably connected to two supporting seats 3, one of the supporting seats 3 is provided with an electric roller 6 for driving the supporting shaft to rotate, and sliders 4 are fixedly provided at the bottom of the two supporting seats 3, and the two sliders 4 are respectively slidably connected to the two guide rails 5; The fixed screening assembly includes a screen roller 7, and the screen roller 7 includes a support shaft, and a plurality of screening sheets 7-1 are provided on the support shaft, and the two ends of the support shaft are rotatably connected to two support seats 3, one of the support seats 3 is provided with an electric roller 6 for driving the support shaft to rotate, and the bottoms of the two support seats 3 are fixed with sliders 4, and the two sliders 4 are fixedly connected to the two guide rails 5 respectively;

[0017] A ball screw 2 is rotatably provided on the mounting frame 100 corresponding to the two guide rails 5, and the ball screw 2 is provided with a plurality of threaded sections respectively screwed to the support seat 3 in each adjustable screening assembly, and the ball screw 2 is driven to rotate by a servo motor 1;

[0018] In the same group of screening mechanisms 200, the screening sheets 7-1 of adjacent screening rollers 7 are arranged alternately, and the screening sheets 7-1 of each screening roller 7 extend into between two screening sheets 7-1 of adjacent screening rollers 7 to form a first screening hole; the screening sheets 7-1 of the screening rollers 7 in the fixed screening components in each group of screening mechanisms 200 are arranged alternately with the screening sheets 7-1 of the screening rollers 7 in the adjacent adjustable screening components in the adjacent screening mechanisms 200, and the screening sheets 7-1 of one screening roller 7 extend into between two screening sheets 7-1 of another screening roller 7 to form a second screening hole.

[0019] There are four groups of the above-mentioned screening mechanisms 200, and the inclination angle of each group of the screening mechanisms 200 is 20-38°.

[0020] To facilitate adjustment of the size of the first sieve hole in the screening mechanism 200, the pitches of the threaded segments of the ball screw 2 in each screening mechanism 200 corresponding to each support seat 3 are different. The pitch of the threaded segment on the ball screw 2 close to the fixed screening component is set to a, and the pitches of the threaded segments on the ball screw 2 gradually away from the fixed screening component are 2a, 3a...na respectively.

[0021] To ensure the screening efficiency, each group of the screening mechanisms 200 mentioned above includes three groups of adjustable screening components.

[0022] It should be noted that, in the same set of screening mechanisms 200, when the electric rollers 6 driving the rotation of each supporting shaft are working, the areas of the screen holes formed between adjacent screen rollers 7 are the same.

[0023] The specific working principle of the utility model is as follows: when in use, first adjust the sizes of the first sieve holes and the second sieve holes according to the shredded tobacco or tobacco sheets to be screened, and the specific adjustment is achieved by starting the servo motor 1, and then adjust the rotation speed of the electric roller 6 in each screening mechanism 200, and then place the shredded tobacco or tobacco sheets on the screening mechanism 200 at the outer end, and then start screening. During the screening process, the shredded tobacco that meets the specifications may fall from the first sieve holes and the second sieve holes.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A tobacco screening device, characterized in that: The invention comprises a mounting frame (100), wherein the mounting frame (100) is provided with a plurality of groups of inclined screening mechanisms (200); each group of the screening mechanisms (200) comprises two guide rails (5) arranged at intervals on the mounting frame (100), wherein the two guide rails (5) are provided with a plurality of groups of adjustable screening components and a group of fixed screening components; the adjustable screening components comprise a screening roller (7), wherein the screening roller (7) comprises a supporting shaft, wherein the supporting shaft is provided with a plurality of screening plates (7-1), wherein both ends of the supporting shaft are rotatably connected to two supporting seats (3), wherein one of the supporting seats (3) is provided with an electric roller (6) for driving the supporting shaft to rotate, wherein the bottoms of the two supporting seats (3) are fixed with sliders (4), and the two sliders (4) are slidably connected to the two guide rails (5) respectively; The fixed screening component comprises a screening roller (7), the screening roller (7) comprising a support shaft, a plurality of screening plates (7-1) being arranged on the support shaft, the two ends of the supporting shaft being rotatably connected to two support seats (3), one of the support seats (3) being provided with an electric roller (6) for driving the supporting shaft to rotate, a slider (4) being fixedly arranged at the bottom of the two support seats (3), the two sliders (4) being respectively fixedly connected to the two guide rails (5); a ball screw (2) being rotatably arranged directly above the two guide rails (5) on the mounting frame (100), the ball screw (2) being provided with a plurality of threaded sections respectively screwed to the support seats (3) in each of the adjustable screening components, the ball screw (2) being driven to rotate by a servo motor (1); in the same screening mechanism (200), the screening plates (7-1) of adjacent screening rollers (7) are arranged in a staggered manner, and the screening plates (7-1) of each screening roller (7) are arranged in a staggered manner. The first sieve hole is formed between two sieve sheets (7-1) extending into adjacent sieve rollers (7); the sieve sheets (7-1) of the sieve rollers (7) in the fixed sieve assembly in each group of the sieve mechanisms (200) are arranged alternately with the sieve sheets (7-1) of the sieve rollers (7) in the adjacent adjustable sieve assembly in the adjacent sieve mechanism (200), and the sieve sheets (7-1) of one sieve roller (7) extend into between the two sieve sheets (7-1) of the other sieve roller (7) to form a first sieve hole; two sieve holes; the screening mechanisms (200) are four groups in total, and the inclination angle of each group of the screening mechanisms (200) is 20-38 degrees; the pitches of the threaded segments of the ball screws (2) corresponding to each support seat (3) in each screening mechanism (200) are different, and the pitch of the threaded segment on the ball screw (2) close to the fixed screening component is set to a, and the pitches of the threaded segments on the ball screws (2) gradually away from the fixed screening component are 2a, 3a...na respectively.

2. The tobacco screening device according to claim 1, characterized in that: Each group of the screening mechanisms (200) comprises three groups of adjustable screening components.

3. The tobacco screening device according to claim 1, characterized in that: In the same group of screening mechanisms (200), when the electric rollers (6) driving the rotation of each support shaft are in operation, the areas of the screen holes formed between adjacent screen rollers (7) are the same.

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