sieving mechanism

Abstract

The present application relates to a kind of screening mechanism, including the screen mesh that tea is screened and the drive assembly of the reciprocating swing of screen mesh, screen mesh is installed on screening support, screening support is respectively installed on rack by each swing installation component, swing installation component includes A1 shaft, A2 shaft and counterweight, A1 shaft and A2 shaft are arranged in parallel interval, A2 shaft and counterweight are respectively connected with A1 shaft, A2 shaft and counterweight are correspondingly arranged on the two sides of A1 shaft, A1 shaft and rack are rotatably assembled, A2 shaft and screening support are rotatably assembled, drive assembly is used to adjust the synchronous motion of each installation component.The above technical scheme provided by the present application, additional counterweight and the eccentric installation of the A2 shaft of assembled screening support, so that the rack of traditional tea screening machine will not vibrate with the reciprocating swing of screen mesh when screening machine is running, so as to not need to be fixedly connected with ground, facilitate tea screening machine to carry out installation position adjustment.

Description

Technical Field

[0001] This invention relates to the field of tea production, and more specifically to a screening mechanism for a tea screening machine. Background Technology

[0002] Currently, tea sieving machines generally separate tea leaves of different sizes by driving a screen to swing back and forth. During operation, the machine frame vibrates continuously as the screen swings. To suppress this vibration, the frame is typically fixed to the ground with anchor bolts or welding, using the ground's constraints to limit the swing. While this installation method ensures the stability of the tea sieving machine, any adjustments to its installation position require complex dismantling and reinstallation, significantly limiting the flexibility of tea production layout. Furthermore, the reciprocating swing of the screen causes uneven material distribution on the screen surface, leading to tea segregation and affecting the impurity removal efficiency of subsequent cleaning mechanisms, ultimately impacting tea quality. Therefore, it is necessary to address these issues. Summary of the Invention

[0003] The purpose of this invention is to provide a screening mechanism for a tea screening machine that can solve the problem of limiting the swing of the tea screening machine by fixing it to the ground.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] A sieving mechanism, characterized in that it includes a sieve for sieving tea leaves and a drive assembly for driving the sieve to reciprocate. The sieve is mounted on a sieving support, which is mounted on a frame via various swing mounting assemblies. Each swing mounting assembly includes an A1 shaft, an A2 shaft, and a counterweight. The A1 shaft and the A2 shaft are arranged parallel and spaced apart. The A2 shaft and the counterweight are respectively connected to the A1 shaft. The A2 shaft and the counterweight are arranged correspondingly on both sides of the A1 shaft. The A1 shaft is rotatably assembled to the frame, and the A2 shaft is rotatably assembled to the sieving support. The drive assembly is used to adjust the synchronous movement of each mounting assembly.

[0006] Specifically: the A1 axis is arranged perpendicular to the screen surface.

[0007] A1 axis is arranged vertically.

[0008] The screens are arranged at an angle, and the A1 shafts on each swing mounting assembly are at the same height. The drive assembly is connected to the A1 shaft of one of the swing mounting assemblies.

[0009] The screening support is also equipped with a receiving base plate, which is located below the screen. The receiving base plate and the screen are arranged correspondingly. The receiving base plate is equipped with guide ribs, the length direction of which is consistent with the length direction of the receiving base plate. The guide ribs are spaced apart on the receiving base plate along the width direction of the receiving base plate.

[0010] The angle between the receiving plate and the horizontal plane is greater than the angle between the screen and the horizontal plane.

[0011] The angle between the sieve and the horizontal plane is 5 to 45 degrees.

[0012] There are four swing mounting components: one on each of the two outer sides at the top of the screen and one on each of the two outer sides at the bottom of the screen.

[0013] The lower end of the receiving guide plate is located below the counterweight block set at this end, and the height of the counterweight block is less than the height of the upper end of the frame.

[0014] The upper end of the screen corresponds to the feeding device on the tea sieving machine. The lower end of the screen is equipped with an A1 guide chute, and the lower end of the receiving base plate is equipped with an A2 guide chute. The A1 guide chute is a folded chute, which is used to guide the tea leaves trapped on the screen to the side of the screen. The A2 guide chute and the receiving base plate are arranged in sequence. The width of the A2 guide chute gradually decreases from top to bottom. The outlet of the A2 guide chute corresponds to the slag removal device on the tea sieving machine. The screen and the sieving support are detachably assembled.

[0015] The technical solution provided by this invention adds a counterweight and eccentrically installs the A2 shaft of the sieve support. In this way, the sieve machine will not vibrate as the frame of the traditional tea sieve machine does with the reciprocating swing of the screen during operation. Therefore, it does not need to be fixed to the ground, making it convenient to adjust the installation position of the tea sieve machine. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2 for Figure 1 A schematic diagram of the structure after the screen is removed.

[0018] Figure 3 This is an assembly diagram of the present invention.

[0019] Drawing number explanation: 00-Frame, 10-Screening support, 11-Screen, 12-Receiving base plate, 13-Guide rib, 14-A1 shaft, 15-Counterweight, 16-A2 shaft, 17-A1 guide chute, 18-A2 guide chute, 19-Screening drive motor. Detailed Implementation

[0020] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention.

[0021] As used herein, the terms “parallel,” “perpendicular,” and the like are not limited to their strict geometric definitions, but include tolerance for reasonable and inconsistent machining or human errors.

[0022] The technical solution provided by this invention is as follows: Figure 1 , 2 As shown in Figure 3, a sieving mechanism includes a screen 11 for sieving tea leaves and a drive assembly for driving the screen 11 to reciprocate. The screen 11 is mounted on a sieving support 10, which is mounted on a frame 00 via various swing mounting assemblies. Each swing mounting assembly includes an A1 shaft 14, an A2 shaft 16, and a counterweight 15. The A1 shaft 14 and A2 shaft 16 are arranged parallel and spaced apart. The A2 shaft 16 and the counterweight 15 are connected to the A1 shaft 14, and are arranged opposite each other on both sides of the A1 shaft 14. The A1 shaft 14 is rotatably assembled to the frame 00, and the A2 shaft 16 is rotatably assembled to the sieving support 10. The drive assembly is used to adjust the synchronous movement of each mounting assembly. The technical solution provided by this invention adds a counterweight 15 and eccentrically installs the A2 shaft 16 of the sieving support 10. This prevents the frame 00 of traditional tea sieving machines from vibrating with the reciprocating swing of the screen 11 during operation, eliminating the need for a fixed connection to the ground and facilitating adjustments to the installation position. The counterweight 15 can be a single counterweight block, the size of which is matched to the swing amplitude and the weight of the sieving mechanism. The screen 11 is detachably mounted on the sieving support 10, specifically via a detachable pressure strip. This allows for the selection of a suitable screen based on the specific tea type, shape, and size.

[0023] Specifically, there are two implementation methods. The first is where the A1 shaft 14 and the screen 11 are arranged vertically. In this method, the sieving support 10 is installed at an angle, and the screen 11 and the sieving support 10 are also at an angle, so the A1 shaft 14 is arranged perpendicular to the screen 11. The second method is where the A1 shaft 14 is arranged vertically. In this method, the sieving support 10 is installed horizontally, and the screen 11 is installed at an angle on the sieving support 10. The second implementation method is preferred. Specifically, the screen 11 is arranged at an angle, and the A1 shafts 14 on each swing mounting assembly are at the same height. The drive assembly is connected to one of the A1 shafts 14 that make up the swing mounting assembly. Thus, by connecting the drive mechanism to one A1 shaft 14, the screen 11 and the sieving support 10 can be driven to swing back and forth together, thereby reliably sieving the tea leaves on the screen 11.

[0024] The screening support 10 is also equipped with a receiving base plate 12, which is located below the screen 11. The receiving base plate 12 and the screen 11 are arranged correspondingly. The receiving base plate 12 is equipped with guide ribs 13, the length direction of which is consistent with the length direction of the receiving base plate 12. The guide ribs 13 are spaced apart along the width direction of the receiving base plate 12. Since the receiving base plate 12 is installed on the screening support 10, it will swing with the swing of the screening support 10 during operation. As a result, the tea material received by the receiving base plate 12 will move to one side of the receiving base plate 12 due to the inertia of the swing, resulting in uneven distribution of material in the width direction of the receiving base plate 12. The guide ribs 13 can eliminate this situation, so that the tea leaves can be more evenly distributed in the width direction when they are removed from the receiving base plate 12, ensuring reliable feeding of the subsequent impurity removal device and improving the reliability of impurity removal.

[0025] Furthermore, the angle between the receiving base plate 12 and the horizontal plane is greater than the angle between the screen 11 and the horizontal plane. The angle between the screen 11 and the horizontal plane is 5° to 45°. Four swing mounting components are provided: one on each of the two outer sides of the upper end of the screen 11 and one on each of the two outer sides of the lower end of the screen 11. The lower end of the receiving guide plate is located below the counterweight block provided at this end, and the height of the counterweight block is less than the height of the upper end of the frame 00. That is, the screen 11 and the receiving guide plate are installed in a sunken manner on the screening support 10, which makes the screening mechanism more stable during operation. More specifically, the upper end of the screen 11 corresponds to the feeding device arrangement on the tea sieving machine, and the lower end of the screen 11 is provided with an A1 guide chute 17. The lower end of the receiving base plate 12 is provided with an A2 guide chute 18. The A1 guide chute 17 is a folded chute, used to guide the tea leaves trapped on the screen 11 to the side of the screen 11. The A2 guide chute 18 and the receiving base plate 12 are arranged sequentially. The width of the A2 guide chute 18 gradually decreases from top to bottom. The outlet of the A2 guide chute 18 corresponds to the slag removal device arrangement on the tea sieving machine. The screen 11 and the sieving support 10 are detachably assembled. The drive assembly includes a sieving drive motor, which is mounted on the frame 00. The output shaft of the sieving drive motor 19 is connected to the lower end of the A1 shaft 14 via gears and a transmission chain. The counterweight 15 and the A2 shaft 16 are mounted on the upper end of the A1 shaft 14.

[0026] In summary, the technical solution provided by this invention enables the tea sieving machine to be installed without being fixed to the ground, while ensuring reliable and uniform feeding of the subsequent impurity removal device on the tea sieving machine.

[0027] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A screening mechanism, characterized in that: The device includes a sieve for sieving tea leaves and a drive assembly for driving the sieve to oscillate back and forth. The sieve is mounted on a sieving support, which is mounted on a frame via various oscillating mounting assemblies. Each oscillating mounting assembly includes an A1 shaft, an A2 shaft, and a counterweight. The A1 and A2 shafts are arranged parallel and spaced apart. The A2 shaft and the counterweight are connected to the A1 shaft, and the A2 shaft and the counterweight are arranged correspondingly on both sides of the A1 shaft. The A1 shaft is rotatably assembled to the frame, and the A2 shaft is rotatably assembled to the sieve support. The drive assembly is used to adjust the synchronous movement of each mounting assembly.

2. The screening mechanism according to claim 1, characterized in that: The A1 axis is arranged perpendicular to the screen surface.

3. The screening mechanism according to claim 1, characterized in that: A1 axis is arranged vertically.

4. The screening mechanism according to claim 1 or 2, characterized in that: The screens are arranged at an angle, and the A1 shafts on each swing mounting assembly are at the same height. The drive assembly is connected to the A1 shaft of one of the swing mounting assemblies.

5. The screening mechanism according to claim 3, characterized in that: The screening support is also equipped with a receiving base plate, which is located below the screen. The receiving base plate and the screen are arranged correspondingly. The receiving base plate is equipped with guide ribs, the length direction of which is consistent with the length direction of the receiving base plate. The guide ribs are spaced apart on the receiving base plate along the width direction of the receiving base plate.

6. The screening mechanism according to claim 3, characterized in that: The angle between the receiving plate and the horizontal plane is greater than the angle between the screen and the horizontal plane.

7. The screening mechanism according to claim 3, characterized in that: The angle between the sieve and the horizontal plane is 5 to 45 degrees.

8. The screening mechanism according to claim 3, characterized in that: There are four swing mounting components: one on each of the two outer sides at the top of the screen and one on each of the two outer sides at the bottom of the screen.

9. The screening mechanism according to claim 2, characterized in that: The lower end of the receiving guide plate is located below the counterweight block set at this end, and the height of the counterweight block is less than the height of the upper end of the frame.

10. The screening mechanism according to claim 2, characterized in that: The upper end of the screen corresponds to the feeding device on the tea sieving machine. The lower end of the screen is equipped with an A1 guide chute, and the lower end of the receiving base plate is equipped with an A2 guide chute. The A1 guide chute is a folded chute, which is used to guide the tea leaves trapped on the screen to the side of the screen. The A2 guide chute and the receiving base plate are arranged in sequence. The width of the A2 guide chute gradually decreases from top to bottom. The outlet of the A2 guide chute corresponds to the slag removal device on the tea sieving machine. The screen and the sieving support are detachably assembled.

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