High-frequency vibration screening machine
By designing high-frequency vibration frames and elastic units in the vibration screening machine, high-frequency vibration and efficient screening are achieved, which solves the problems of low screening efficiency and high energy consumption of existing equipment, and optimizes the equipment structure and saves floor space.
Patent Information
- Application Number
- CN202421895428.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-08-07
AI Technical Summary
The existing vibration screening machines have low screening efficiency in tobacco leaf processing and tobacco wire preparation, large motor energy consumption, and the equipment structure is not compact and occupy a large area.
A high-frequency vibration screening machine is designed. By installing a vibrator and multiple groups of elastic units (reeds) on the frame, the vibration groove body reaches a state of resonance close to the same frequency as the frame, improves the vibration frequency and screening efficiency, and optimizes the equipment structure through up and down misalignment settings.
High-frequency vibration is achieved, the energy consumption of the vibration exciter is reduced, the screening efficiency is improved, the equipment is compact and interface friendly, and the footprint is saved.
Smart Images
Figure CN222956875U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to tobacco screening equipment, in particular to a high-frequency vibration screening machine. Background Art
[0002] Vibration screening machines are very common equipment on the tobacco leaf processing and cut tobacco preparation production lines in the tobacco industry. It adds one or two layers of sieve plates in the vibration conveyor trough body. Its function is to screen out small fragments (or unqualified scraps) of specified specifications through the sieve plates at the bottom during the vibration conveying process of materials. Currently, the widely used vibration screening machine structure type in this industry is the elastic rocker type, and this type of vibration conveying equipment works in a low vibration frequency / large amplitude mode. Its advantages are relatively easy manufacturing and strong conveying capacity, while its disadvantages are large motor energy consumption (not reaching the near-resonance working state) and low screening efficiency (few vibration times for materials).
[0003] In view of this, the present utility model is proposed. Content of the Utility Model
[0004] The purpose of the present utility model is to overcome the deficiencies of the prior art and provide a high-frequency vibration screening machine for tobacco leaf conveying and screening, which has a higher vibration frequency and significantly improved screening efficiency during operation.
[0005] To achieve this purpose, the present utility model adopts the following technical solutions:
[0006] A high-frequency vibration screening machine, comprising an exciter, an elastic unit, a frame, a vibration trough body and a support device. The vibration trough body is connected to the frame through a plurality of elastic units. The exciter is installed on the frame and is configured to cause the frame to generate high-frequency vibration;
[0007] The frame at least includes a first frame body and a second frame body, and a transition connection section connecting the first frame body and the second frame body. There is a height difference between the first frame body and the second frame body;
[0008] The plurality of elastic units are divided into two groups, and the two groups of elastic units are installed at different heights. The vibration trough body is arranged parallel to the first frame body and the second frame body, and is connected to the first frame body and the second frame body respectively through the elastic units installed at different heights.
[0009] Further, the elastic unit is composed of one or two reed pieces. One end of the reed piece is connected to the vibration trough body, and the other end is connected to the frame;
[0010] The reed pieces are parallel to each other and are inclined with respect to the vibration trough body.
[0011] Further, bolt holes are provided at the ends of the reed pieces, and a plurality of mounting seats cooperating with the reed pieces are provided on the frame and the vibration trough body. The reed pieces are fixedly connected to the mounting seats through bolts.
[0012] Further, the exciters are a pair and are fixedly installed at the middle position of the frame, and the rotation directions of the two exciters are opposite.
[0013] Further, the supporting device includes rigid supporting legs and an elastic support body. The elastic support body is installed at the top end of the rigid supporting legs, and the top of the elastic support body is connected to the frame.
[0014] Further, the height of the first frame body is lower than that of the second frame body.
[0015] After adopting the technical solution of the present utility model, the following beneficial effects are brought:
[0016] In the present utility model, by grouping the reed pieces, when the exciter works, the reed pieces vibrate together with the frame. Due to the geometric characteristics (length) and elastic characteristics (material) of the reed pieces, the amplitude of the end of the reed piece connected to the vibrating trough body is naturally amplified several times. The amplified vibration and amplitude are transmitted to the vibrating trough body, making it reach a state close to the same-frequency resonance as the frame. According to the vibration theory, when the vibration frequency enters the resonance state, the energy consumed by the external input is minimized. Therefore, the energy consumption of the exciter is greatly reduced, and due to the relatively high vibration frequency, the screening efficiency is also greatly improved.
[0017] At the same time, since the two ends of the frame are arranged in an up-and-down offset manner, the height difference between the feeding and discharging positions is greatly reduced, improving the interface friendliness and compactness of this equipment with the front and rear connecting equipment on the production line, making the production line smoother and saving floor space. Description of the Drawings
[0018] Figure 1 : is the front view of the present utility model;
[0019] Figure 2 : is Figure 1 the A-A cross-sectional view of
[0020] Figure 3 : is the top view of the present utility model;
[0021] Figure 4 : is Figure 1 the partial enlarged view B of
[0022] Wherein: 1. Exciter 2. Elastic unit 3. Frame 4. Vibrating trough body 5. Supporting device 21. Reed piece 22. Mounting seat 31. First frame body 32. Second frame body 33. Transition connecting section 51. Rigid supporting leg 52. Elastic support body 100. Feeding equipment 200. Discharging equipment. Detailed Embodiment
[0023] The following further describes in detail the specific embodiments of the present utility model in conjunction with the drawings.
[0024] As shown Figures 1 to 3 in the figure, a high-frequency vibration screening machine includes an exciter 1, an elastic unit 2, a frame 3, a vibrating trough 4, and a support device 5. Among them, the frame 3 has a "Z"-shaped structure with one end high and the other end low, and includes a first frame body 31, a second frame body 32, and a transition connection section 33 connecting the first frame body 31 and the second frame body 32. The first frame body 31 and the second frame body 32 are arranged parallel to each other, but they are at different horizontal heights and have a height difference, and this height difference generally does not exceed twice the length of the elastic unit 2.
[0025] The vibrating trough 4 is arranged parallel to the first frame body 31 and the second frame body 32, and is connected to the frame 3 through a plurality of elastic units 2. The plurality of elastic units 2 are divided into two groups according to different connection positions with the frame 3. One group of elastic units 2 is installed on the first frame body 31, and the other group of elastic units 2 is installed on the second frame body 32. The vibrating trough 4 is connected to the first frame body 31 and the second frame body 32 through two groups of elastic units 2 respectively. To ensure that the vibrating trough 4 is arranged between the first frame body 31 and the second frame body 32, the elastic unit 2 connected to the first frame body 31 is located on the lower side of the vibrating trough 4, and the elastic unit 2 connected to the second frame body 32 is located on the upper side of the vibrating trough 4.
[0026] Combined Figure 4 as shown in the figure, preferably, the elastic unit 2 is composed of one or two reed pieces 21. One end of the reed piece 21 is connected to the vibrating trough 4, and the other end is connected to the frame 3. The reed pieces 21 are parallel to each other and are inclined with respect to the vibrating trough 4.
[0027] Specifically, bolt holes are provided at the ends of the reed pieces 21, and a plurality of mounting seats 22 cooperating with the reed pieces 21 are provided on the frame 3 and the vibrating trough 4. The reed pieces 21 are fixedly connected to the mounting seats 22 through bolts.
[0028] The exciter 1 is installed on the frame 3 and is configured to cause the frame 3 to generate high-frequency vibration. Specifically, there are a pair of exciters 1, and two exciters 1 with opposite rotation directions are fixedly installed at the middle position of the frame 3, and the rotation axes of the exciters 1 have the same inclination angle as the reed pieces 21.
[0029] The support device 5 includes a rigid support leg 51 and an elastic support body 52. The elastic support body 52 is installed at the top of the rigid support leg 51, and the top of the elastic support body 52 is connected to the frame 3.
[0030] Preferably, the elastic support body 52 is made of rubber material. The elastic support body 52 provides necessary elastic support for the frame 3, so that the frame 3 generates primary vibration under the action of the exciting force. At the same time, it will reduce the transmission of dynamic load to the ground.
[0031] Preferably, the height of the first frame body 31 is lower than that of the second frame body 32. Since the feeding device is generally located above the frame 3 and the discharging device is generally located below the frame 3, the first frame body 31 corresponds to the feeding device 100 and the second frame body 32 corresponds to the discharging device 200. This greatly reduces the height difference between the feeding and discharging ports, improves the interface friendliness and compactness of the device with the front and rear connecting devices on the production line, makes the production line smoother, and saves floor space.
[0032] The working principle of the present utility model is as follows: Under the action of the exciting force of the vibrator 1, the frame 3 generates vibrations with a certain amplitude, driving the reed 21 mounted thereon to generate resonance. Due to the geometric characteristics (length) and elastic characteristics (material) of the reed 21, the amplitude at the other end of the reed 21 is naturally amplified several times. The amplified vibration and amplitude are transmitted to the vibrating trough body 4, enabling it to reach a state close to the same-frequency resonance as the frame 3. According to vibration theory, when the vibration frequency enters the resonance state, the energy input from the outside is consumed to the minimum.
[0033] In addition, due to the inclined installation of the reed 21 and the vibrator 1 with respect to the vibrating trough body 4, the vibration has an acceleration forward and upward, driving the materials in the vibrating trough body 4 to perform directional throwing and conveying, and being screened while being conveyed forward.
[0034] Figure 1 Shown is an embodiment in which the vibrating trough body 4 and the frame 3 are parallel to the ground. The vibrating trough body 4 and the frame 3 can also be set at a certain angle with respect to the ground as a second embodiment.
[0035] The above is the implementation manner of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, various deformations and improvements can be made, which should also be regarded as the protection scope of the present utility model.
Claims
1. A high-frequency vibration screening machine, comprising an exciter (1), an elastic unit (2), a frame (3), a vibration trough (4) and a supporting device (5), wherein the vibration trough (4) is connected to the frame (3) via a plurality of elastic units (2), the exciter (1) is mounted on the frame (3) and is configured to cause the frame (3) to generate high-frequency vibration, characterized in that: The frame (3) comprises at least a first frame body (31), a second frame body (32), and a transition connection section (33) connecting the first frame body (31) and the second frame body (32), wherein the first frame body (31) and the second frame body (32) have a height difference; The plurality of elastic units (2) are divided into two groups, and the two groups of elastic units (2) are installed at different heights. The vibration trough (4) and the first frame (31) and the second frame (32) are arranged parallel to each other, and are respectively connected to the first frame (31) and the second frame (32) through the elastic units (2) installed at different heights.
2. A high frequency vibration screening machine according to claim 1, characterized in that: The elastic unit (2) is composed of one or two spring leaves (21), one end of the spring leaf (21) is connected to the vibration trough (4), and the other end is connected to the frame (3); The reeds (21) are parallel to each other and are arranged obliquely relative to the vibration slot body (4).
3. A high frequency vibration screening machine according to claim 2, characterized in that: The end of the leaf spring (21) is provided with a bolt hole, and a plurality of mounting seats (22) matching the leaf spring (21) are provided on the frame (3) and the vibration trough body (4), and the leaf spring (21) is fixedly connected to the mounting seats (22) by bolts.
4. A high frequency vibration screening machine according to claim 1, characterized in that: The vibrators (1) are a pair and are fixedly mounted in the middle of the frame (3); the two vibrators (1) rotate in opposite directions.
5. A high frequency vibration screening machine according to claim 1, characterized in that: The support device (5) comprises a rigid support leg (51) and an elastic support body (52), wherein the elastic support body (52) is installed on the top of the rigid support leg (51), and the top of the elastic support body (52) is connected to the frame (3).
6. A high frequency vibration screening machine according to claim 1, characterized in that: The first frame (31) is lower in height than the second frame (32).