Automatic net sweeping system based on vibration separating screen

Abstract

An automatic net sweeping system based on a vibration separating screen is characterized by comprising a supporting and guiding mechanism, a power transmission mechanism and a net sweeping mechanism, the supporting and guiding mechanism comprises two guiding shafts arranged on the left side and the right side, a front fixing and supporting plate, a rear fixing and supporting plate and two guiding bearing seats, and the power transmission mechanism comprises a synchronous shaft driven by a driving motor. The driving wheel, the front driven wheel, the rear driven wheel and the idle wheel are installed at the two ends of the synchronous shaft, the synchronous belt is matched with all the wheels, and the net sweeping mechanism comprises a net sweeping shaft driven by a rotating motor, a net sweeping supporting frame and a net sweeping brush. Compared with the prior art, the net sweeping system has the advantages that the net sweeping system is stable in running speed and free of blockage, the net sweeping brush is high in sweeping frequency and good in effect, and working efficiency is high.

Description

Technical Field

[0001] This utility model belongs to the field of vibrating sorting screen technology in the tobacco industry, specifically an automatic screen sweeping system based on a vibrating sorting screen. Background Technology

[0002] With the development of the tobacco industry, the variety of cigarettes has become increasingly diversified, with new categories such as medium, short, and thin cigarettes constantly emerging and their market share increasing year by year. Consumers have increasingly higher requirements for product quality, among which the whole tobacco rate and broken tobacco rate are particularly important to the quality of cigarettes. Therefore, it is essential to determine the whole tobacco rate and broken tobacco rate of the materials during the tobacco raw material production process. According to the standard "YC / T 178-2003 Method for Determination of Whole Tobacco Rate and Broken Tobacco Rate", the method uses a vibrating sorting screen to separate the tobacco into four sizes using three different sizes of screens. The weight of the tobacco shreds sieved from each layer of screen is weighed, and the whole tobacco rate and broken tobacco rate of the tobacco material are calculated using a formula.

[0003] Traditional vibrating sorting screens require manual cleaning of the screen mesh. While this method provides good cleaning results, it is time-consuming, labor-intensive, and inefficient. Furthermore, manual cleaning can be rough and easily damage the screen mesh. Our company developed a first-generation automatic screen-sweeping system based on this method. This system uses a cylinder-driven sweeping mechanism and a swing cylinder-driven brush to oscillate and clean the screen. However, the cylinder-driven mechanism is prone to problems due to unstable air pressure, which can cause the cylinders to jam and malfunction. The inconsistent operating speed also prevents comprehensive cleaning of the entire screen size. Additionally, the pneumatic oscillating sweeping frequency is relatively slow. Therefore, even with both methods combined, the cleaning effect still falls short of customer satisfaction. Utility Model Content

[0004] The purpose of this utility model is to design an automatic screen-sweeping system based on a vibrating sorting screen, which is a new generation of automatic screen-sweeping systems, based on the above-mentioned existing technology.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] An automatic screen-sweeping system based on a vibrating sorting screen includes a support and guiding mechanism, a power transmission mechanism, and a screen-sweeping mechanism.

[0007] The support and guide mechanism includes two guide shafts arranged on the left and right, front and rear fixed support plates, and two guide bearing seats. The two ends of the guide shafts are fixed to the front and rear fixed support plates respectively, and the guide bearing seats are mounted on the guide shafts and can slide back and forth.

[0008] The power transmission mechanism includes a synchronous shaft driven by a drive motor, a driving wheel mounted at both ends of the synchronous shaft, front and rear driven wheels, an idler wheel, and a synchronous belt that cooperates with each wheel. The front and rear driven wheels are respectively mounted on the front and rear fixed support plates, and the driving wheel and the idler wheel are both mounted on the front fixed support plate. The synchronous belt is connected to the guide bearing seat in the support and guide mechanism.

[0009] The sweeping mechanism includes a sweeping shaft driven by a rotary motor, a sweeping support frame, and a sweeping brush. The sweeping brush is fixed on the sweeping shaft, and both ends of the sweeping shaft are supported on the sweeping support frame. Both ends of the sweeping support frame are fixed on the guide bearing seats in the support and guide mechanism and move back and forth with it.

[0010] Furthermore, the sweeping brush consists of two sets of sweeping brushes arranged in opposite directions at 180°.

[0011] Furthermore, a detection sensor is installed on the rear fixed support plate to detect when the sweeping mechanism reaches the edge of the screen, and then instructs the drive motor to rotate in the opposite direction to perform reciprocating sweeping.

[0012] The automatic screen-sweeping system is mounted on the frame of the vibrating sorting screen via front and rear fixed support plates. The vibrating screen frame and the automatic screen-sweeping system are independently mounted on the overall instrument frame, and are independent of each other, not affecting each other's use. The vibrating sorting screen may have multiple layers of screen frames, and the automatic screen-sweeping system can be added as the number of vibrating screen frames increases.

[0013] When the automatic screen sweeping system of this utility model is working, the drive motor drives the synchronous shaft, the driving wheel, the synchronous belt and the front and rear driven wheels to rotate. The synchronous belt drives the guide bearing seat to move, and the screen sweeping mechanism set on the guide bearing seat moves accordingly and sweeps the screen under the drive of the rotary motor. When the screen is swept to one end, the detection sensor sends a command to drive the motor to run in reverse, thereby realizing the reciprocating cleaning of the screen.

[0014] The advantages of this invention compared to the prior art are: the sweeping system is changed to motor drive, which makes the running speed stable and without jamming; the sweeping brush has a fast sweeping frequency and good effect, resulting in high work efficiency. Attached Figure Description

[0015] Figure 1 This is a top view of the present invention (showing the vibrating screen surface).

[0016] Figure 2 This is an axonometric view of the present invention (showing the vibrating screen surface).

[0017] Figure 3 This is a top view of the automatic screen-sweeping mechanism of this utility model (the vibrating screen surface is not shown).

[0018] Figure 4This is an isometric view of the automatic screen sweeping mechanism of this utility model (the vibrating screen surface is not shown).

[0019] Figure 5 This is a side view of the power transmission mechanism in this utility model.

[0020] Figure 6 This is a schematic diagram of the sweeping mechanism in this utility model. ，

[0021] Figure 1-6 Components: 1-Vibrating screen frame; 2-Sweeping mechanism; 2.1-Front fixed support plate; 2.2-Drive wheel; 2.3 Drive motor; 2.4-Synchronous shaft; 2.5-Detection sensor; 2.6-Front driven wheel; 2.7-Idler wheel; 2.8-Synchronous belt; 2.9-Rear driven wheel; 2.10-Guide shaft; 2.11-Guide shaft fixing seat; 2.12-Rear fixed support plate; 2.13-Guide bearing seat; 2.14-Sweeping support frame; 2.15-Sweeping shaft; 2.16-Bearing assembly; 2.17-Rotating motor; 2.18-Sweeping brush. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] like Figure 1-6 As shown: An automatic screen-sweeping system based on a vibrating sorting screen includes a support and guiding mechanism, a power transmission mechanism, and a screen-sweeping mechanism.

[0024] The support and guide mechanism includes two guide shafts 2.10 arranged on the left and right, front and rear fixed support plates (2.1, 2.12), and two guide bearing seats 2.13. The two ends of the guide shafts 2.10 are fixed to the front and rear fixed support plates respectively, and the guide bearing seats 2.13 are mounted on the guide shafts 2.10 and can slide back and forth.

[0025] The power transmission mechanism includes a synchronous shaft 2.4 driven by a drive motor 2.3, a driving wheel 2.2 mounted at both ends of the synchronous shaft, front and rear driven wheels (2.6, 2.9), an idler wheel 2.7, and a synchronous belt 2.8 that cooperates with each wheel. The front and rear driven wheels are respectively mounted on the front and rear fixed support plates. The driving wheel 2.2 and the idler wheel 2.7 are both mounted on the front fixed support plate 2.1. The synchronous belt 2.8 is connected to the guide bearing seat 2.13 in the support and guide mechanism.

[0026] The sweeping mechanism includes a sweeping shaft 2.15 driven by a rotary motor 2.17, a sweeping support frame 2.14, and a sweeping brush 2.18. The sweeping brush 2.18 is fixed on the sweeping shaft 2.15. Both ends of the sweeping shaft are supported on the sweeping support frame 2.14. Both ends of the sweeping support frame are fixed on the guide bearing seats 2.13 in the support and guide mechanism and move back and forth with it.

[0027] Furthermore, the sweeping brush consists of two sets of sweeping brushes arranged in opposite directions at 180°.

[0028] Furthermore, a detection sensor 2.5 is provided on the rear fixed support plate 2.12 to detect when the sweeping mechanism reaches the edge of the screen and then instruct the drive motor to rotate in the opposite direction to perform reciprocating sweeping.

[0029] Further explanation is as follows:

[0030] In the power transmission system, the driving wheel 2.2, drive motor 2.3, front driven wheel 2.6, and idler wheel 2.7 are all fixed to the front fixed support plate 2.1, and the rear driven wheel 2.9 is fixed to the rear fixed support plate 2.12. The guide shaft 2.10 is fixedly mounted to the front fixed support plate 2.1 and the rear fixed support plate 2.12 respectively through guide shaft fixing seats 2.11 at both ends. One end of the driving wheel 2.2 is connected to the drive motor 2.3, and the other end is connected to the other driving wheel through the synchronous shaft 2.4. That is, the motor drives the rotation of one driving wheel, which in turn drives the rotation of the other driving wheel synchronously through the synchronous shaft.

[0031] The driving pulley 2.2 is connected to the front driven pulley 2.6, the rear driven pulley 2.9 and the guide bearing seat 2.13 via the synchronous belt 2.8, and the idler pulley 2.7 provides tension to prevent loosening and slippage.

[0032] The two sets of guide shafts 2.10 are fixed at both ends by guide shaft fixing seats 2.11, and the two sets of guide bearing seats 2.13 are installed on the guide shafts 2.10 and connected to the synchronous belts 2.8 on both sides and the two sides of the sweeping net support frame 2.14 respectively. The motor drives the synchronous shaft 2.4 to realize the synchronous movement of the two sides of the sweeping net support frame 2.14 without jamming.

[0033] The sweeping shaft 2.15 is fixed to the sweeping support frame 2.14 via bearing assemblies 2.16 at both ends, and one end is connected to a rotary motor 2.17. Two sets of sweeping brushes 2.18 in opposite directions are fixed on the sweeping shaft. The rotary motor 2.17 drives the sweeping shaft 2.15 to rotate, which in turn drives the sweeping brushes to rotate and clean the screen. The sweeping brushes must stop horizontally when they stop, therefore the rotary motor 2.17 needs to start and stop at an angle, or a sensor can be added to detect the angle to achieve the desired effect.

[0034] After the detection sensor 2.5 detects that the sweeping net has reached the edge of the screen, the drive motor 2.3 rotates in the opposite direction to perform reciprocating cleaning.

Claims

1. An automatic screen-sweeping system based on a vibrating sorting screen, characterized in that: This includes a support and guidance mechanism, a power transmission mechanism, and a net-sweeping mechanism. The support and guide mechanism includes two guide shafts arranged on the left and right, front and rear fixed support plates, and two guide bearing seats. The two ends of the guide shafts are fixed to the front and rear fixed support plates respectively, and the guide bearing seats are mounted on the guide shafts and can slide back and forth. The power transmission mechanism includes a synchronous shaft driven by a drive motor, a driving wheel mounted at both ends of the synchronous shaft, front and rear driven wheels, an idler wheel, and a synchronous belt that cooperates with each wheel. The front and rear driven wheels are respectively mounted on the front and rear fixed support plates, and the driving wheel and the idler wheel are both mounted on the front fixed support plate. The synchronous belt is connected to the guide bearing seat in the support and guide mechanism. The sweeping mechanism includes a sweeping shaft driven by a rotary motor, a sweeping support frame, and a sweeping brush. The sweeping brush is fixed on the sweeping shaft, and both ends of the sweeping shaft are supported on the sweeping support frame. Both ends of the sweeping support frame are fixed on the guide bearing seats in the support and guide mechanism and move back and forth with it.

2. The automatic screen-sweeping system based on a vibrating sorting screen according to claim 1, characterized in that: The sweeping brush consists of two sets of sweeping brushes arranged in opposite directions at 180°.

3. The automatic screen-sweeping system based on a vibrating sorting screen according to claim 1, characterized in that: A detection sensor is installed on the rear fixed support plate to detect when the sweeping mechanism reaches the edge of the screen, and then instructs the drive motor to rotate in the opposite direction to perform reciprocating sweeping.

4. The automatic screen-sweeping system based on a vibrating sorting screen according to claim 1, characterized in that: The automatic screen-sweeping system is mounted on the frame of the vibrating sorting screen via front and rear fixed support plates.

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