Flexible screening machine

Abstract

The utility model discloses a flexible screening machine, which belongs to the field of medicinal material screening equipment and comprises a base and a screening table, four supporting structures used for being connected with the screening table are arranged on the inner side of the base, and a driving device used for pulling the screening table to move is arranged in the base. The first belt pulley and the second belt pulley are arranged to transmit the output of the motor, so that the motor can drive the main shaft to rotate in a fixed state, meanwhile, the main shaft is restrained by the second belt pulley, and the floating wheel is connected with the first floating seat and the second floating seat in a floating manner; the main shaft can shake in a small amplitude under the action of centrifugal force, so that vibration acting force is generated, the screening table is driven to vibrate and screen, normal use of the motor is not affected, the service life of the motor is prolonged, and the equipment maintenance risk is reduced.

Description

Technical Field

[0001] The utility model relates to the field of medicinal material screening equipment, in particular to a flexible screening machine. Background Art

[0002] Screening machines are mechanical devices used to separate and screen materials, widely used in industries such as mining, construction, chemicals, food, and pharmaceuticals. Their primary function is to classify, separate, or remove impurities from materials based on their particle size, shape, and density. The operating principle of a screening machine is generally based on the movement of material across a screen. The material vibrates against the screen surface, and different forces act on materials of varying mass and size, enabling the separation of materials of varying mass.

[0003] Conventional screening systems use a vibration motor as a driving force to vibrate the entire screening platform loaded with material. Because the motor, acting as the driving force, is located directly beneath the vibrating screening platform, the motor vibrates with the platform for extended periods. The high amplitude of the motor vibrations can cause additional mechanical stress on components within the motor system, potentially leading to wear, cracks, or breakage. This is particularly prevalent among critical components, such as bearings and gears, which can shorten the life of the equipment and increase maintenance and repair costs.

[0004] Therefore, it is necessary to provide a flexible screening machine to solve the problems existing in the prior art. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a flexible screening machine which separates a driving source from a screening platform so as to extend the service life of a motor of the driving source.

[0006] In order to solve the above technical problems, the technical solution of the utility model is as follows: a flexible screening machine, comprising a base and a screening table, wherein four supporting structures for connecting the screening table are provided on the inner side of the base, and a driving device for pulling the screening table is provided inside the base;

[0007] The driving device includes a motor as a driving source, a main shaft connected to the motor, and a cam fixedly connected to the main shaft. The cam is floatingly connected to the screening platform. The motor is fixed to the base through a bracket. A first pulley is fixedly mounted on the output shaft of the motor. A second pulley is fixedly mounted on the outside of the main shaft. The second pulley is rotatably supported by a rotating frame fixed with bolts. The first pulley and the second pulley are driven by a belt. A second floating seat is fixedly mounted on the bottom of the screening platform, and the cam is floatingly connected to the second floating seat.

[0008] Preferably, the top of the screening platform is inclined toward one side, and a discharge frame is installed on the lower end of the screening platform.

[0009] Preferably, two discharging frames are symmetrically arranged on the front and rear sides of the screening table, and two are installed at one end of the screening table at the same time and are staggered in height.

[0010] Preferably, the supporting structure includes a fixed shaft fixedly installed in the base, a spring installed on the fixed shaft, a connecting shaft fixedly connected to the spring, and a connecting seat located on the screening platform.

[0011] Preferably, a spring seat is fixed to the top end of the fixed shaft by a bolt, and a spring seat is also fixed to the end of the connecting shaft, and both ends of the spring are fixed to the two spring seats respectively.

[0012] Preferably, a nut is threadedly mounted on the end of the connecting shaft to enhance the connection stability between the connecting shaft and the spring seat.

[0013] Preferably, the lower end of the connecting seat is open and a rolling frame is fixedly installed thereon, the end of the connecting shaft is integrally connected with a spherical ball, the ball is embedded in the rolling frame, and the ball is rollingly connected relative to the rolling frame.

[0014] Preferably, a first floating seat is fixedly installed in the base by bolts, and the first floating seat has two seats located at both ends of the main shaft. The outside of the main shaft has two floating wheels, and the two floating wheels are located in the two first floating seats and are floatingly connected to the first floating seat.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention arranges a first pulley and a second pulley to transmit the output of the motor, so that the motor can drive the main shaft to rotate in a fixed state, and at the same time, the main shaft is constrained by the second pulley, and a floating connection is arranged between the floating pulley and the first floating seat and the second floating seat, so that the main shaft can obtain a slight swing under the action of centrifugal force, thereby generating a vibration force, thereby driving the screening table to vibrate and screen, and at the same time does not affect the normal use of the motor, thereby increasing the service life of the motor and reducing the risk of equipment maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the flexible screening machine of the utility model;

[0017] Figure 2 for Figure 1 Side view of

[0018] Figure 3 for Figure 1A magnified view of the structure at point A; DETAILED DESCRIPTION

[0019] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0020] like Figures 1 to 3 As shown, the utility model is a flexible screening machine, comprising a base 1 and a screening table 2. The top of the screening table 2 is inclined toward one side to facilitate the movement of materials along the surface of the screening table 2. At the same time, a discharge frame 3 is installed on the lower end of the screening table 2.

[0021] Specifically, two discharging frames 3 are symmetrically arranged on the front and rear sides of the screening platform 2 , and two are installed at one end of the screening platform 2 at the same time with different heights.

[0022] By setting up the four discharging frames 3 , materials of different qualities can be conveniently screened out from the discharging frames 3 at different positions, thereby achieving screening.

[0023] In the present invention, four supporting structures for connecting the screening platform 2 are provided on the inner side of the base 1 , so that the screening platform 2 can rock relative to the base 1 .

[0024] Furthermore, the supporting structure includes a fixed shaft 4 fixedly installed in the base 1 , a spring 6 installed on the fixed shaft 4 , a connecting shaft 8 fixedly connected to the spring 6 , and a connecting seat 10 located on the screening platform 2 .

[0025] It should be noted that a spring seat 5 is fixed to the top of the fixed shaft 4 by bolts, and a spring seat 5 is also fixed to the end of the connecting shaft 8. The two ends of the spring 6 are respectively fixed to the two spring seats 5, so that the connecting shaft 8 can complete flexible swing.

[0026] Preferably, a nut 7 is threadedly mounted on the end of the connecting shaft 8 to enhance the connection stability between the connecting shaft 8 and the spring seat 5 .

[0027] It should be noted that the lower end of the connecting seat 10 is open and a rolling frame 11 is fixedly installed thereon. The end of the connecting shaft 8 is integrally connected with a spherical ball 9 which is embedded in the rolling frame 11 and is rollingly connected relative to the rolling frame 11 .

[0028] Due to the flexible connection between the supporting structure and the connecting seat 10, the screening table 2 is supported and swiveled.

[0029] Of course, in order to drive the screening table 2 to vibrate, a driving device for pulling the screening table 2 to move is provided in the base 1. The driving device includes a motor 12 as a driving source, a main shaft 16 connected to the motor 12, and a cam 17 fixedly connected to the main shaft 16. The cam 17 is floatingly connected to the screening table 2, wherein the cam 17 is fixed to the end of the main shaft 16 for generating eccentric rotation. Under the eccentric rotation of the cam 17, centrifugal force is generated to pull the screening table 2 to move.

[0030] In order to separate the motor 12 from the screening table 2 and connect them, the motor 12 is fixed to the base 1 through a bracket. A first pulley 13 is fixedly installed on the output shaft of the motor 12. A second pulley 15 is fixedly installed on the outside of the main shaft 16. The second pulley 15 is penetrated by the bottom end of the main shaft 16 and adopts a non-rigid connection method. The second pulley 15 is rotatably supported by a rotating frame fixed with bolts 14. The first pulley 13 and the second pulley 15 are driven by a belt, thereby realizing the separation and connection of the main shaft 16.

[0031] Since the motor 12 is fixed in the base 1 through the bracket and drives the main shaft 16 to rotate through the belt transmission, the motor 12 will not shake with the screening table 2 at this time, thereby increasing the service life of the motor 12.

[0032] In order to connect the main shaft 16, the cam 17 and the screening table 2, a second floating seat 20 is fixedly installed at the bottom of the screening table 2, and the cam 17 is floatingly connected to the second floating seat 20. A first floating seat 19 is fixedly installed in the base 1 by bolts. The first floating seat 19 has two seats located at both ends of the main shaft 16.

[0033] Furthermore, the main shaft 16 has two floating wheels on the outside. The two floating wheels are located in the two first floating seats 19 and are floatingly connected to the first floating seats 19. The main shaft 16 is connected through the movable connection of the floating wheels, so that the main shaft 16 can have a slight eccentric floating.

[0034] During the specific implementation process, due to the centrifugal force generated by the rotation of the cam 17, the main shaft 16 will always float along the axial direction, but it is constrained by the position of the first pulley 15, so the center of gravity of the main shaft 16 continues to move, which will cause a slight displacement, but the displacement is constrained and forcibly pulled back to the original axial core position, forming a vibration source.

[0035] Similar to the above structure, the second floating seat 20 and the cam 17 are also connected in a floating manner by a floating wheel, so that the screening platform 2 can obtain a larger deflection amplitude.

[0036] The utility model is specifically used as follows: by controlling the operation of the motor 12 located in the base 1, the motor 12 drives its output end to rotate, and the first pulley 13 located on the output end of the motor 12 rotates accordingly, and the first pulley 13 drives the second transmission wheel 15 to rotate through the belt transmission, and the second transmission wheel 15 is fixedly connected to the main shaft 16 to pull the main shaft 16 to rotate, and the main shaft 16 drives the cam 17 fixed at its end to rotate. Since the center of gravity of the cam 17 deviates from the axis core position of the main shaft 16, the cam 17 can generate a centrifugal force on the main shaft 16 under rotation, so that the center of gravity of the main shaft 16 deviates from the axis core position, and since the main shaft 16 and the second transmission wheel 15 are fixedly connected to each other, the main shaft 16 is constrained by the second transmission wheel 15 at this time, and is forced to return to the axis core position, thereby causing the floating wheel connected to the upper end of the cam 17 to vibrate, and the second floating seat 20 provides a vibration space for the floating wheel, and the vibration is transmitted to the screening table 2, thereby realizing the vibration drive of the screening table 2.

[0037] Finally, it should be noted that the contents not described in detail in the specification belong to the existing technology known to professional and technical personnel in this field, and those skilled in the art can implement them without creative work, so they will not be repeated here.

[0038] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A flexible screening machine, characterized in that: It comprises a base (1) and a screening platform (2), wherein the inner side of the base (1) is provided with four supporting structures for connecting the screening platform (2), and the base (1) is provided with a driving device for pulling the screening platform (2) to move; The driving device includes a motor (12) as a driving source, a main shaft (16) connected to the motor (12), and a cam (17) fixedly connected to the main shaft (16); the cam (17) is floatingly connected to the screening table (2); the motor (12) is fixed to the base (1) through a bracket; a first pulley (13) is fixedly installed on the output shaft of the motor (12); a second pulley (15) is fixedly installed on the outside of the main shaft (16); the second pulley (15) is rotatably supported by a rotating frame fixed by bolts (14); a belt transmission is used between the first pulley (13) and the second pulley (15); a second floating seat (20) is fixedly installed at the bottom of the screening table (2); and the cam (17) is floatingly connected to the second floating seat (20).

2. The flexible screening machine according to claim 1, characterized in that: The top of the screening platform (2) is inclined toward one side, and a discharge frame (3) is installed on the lower end of the screening platform (2).

3. The flexible screening machine according to claim 2, characterized in that: Two discharging frames (3) are symmetrically arranged on the front and rear sides of the screening platform (2), and two are simultaneously installed on one end of the screening platform (2) and are staggered in height.

4. The flexible screening machine according to claim 1, characterized in that: The supporting structure comprises a fixed shaft (4) fixedly installed in the base (1), a spring (6) installed on the fixed shaft (4), a connecting shaft (8) fixedly connected to the spring (6), and a connecting seat (10) located on the screening table (2).

5. The flexible screening machine according to claim 4, characterized in that: A spring seat (5) is fixed to the top end of the fixed shaft (4) by means of bolts, and a spring seat (5) is also fixed to the end of the connecting shaft (8). Both ends of the spring (6) are fixed to the two spring seats (5) respectively.

6. The flexible screening machine according to claim 5, characterized in that: The end of the connecting shaft (8) is also threadedly mounted with a nut (7) for enhancing the connection stability between the connecting shaft (8) and the spring seat (5).

7. The flexible screening machine according to claim 4, characterized in that: The lower end of the connecting seat (10) is open and fixedly mounted with a rolling frame (11); the end of the connecting shaft (8) is integrally connected with a spherical ball (9); the ball (9) is embedded in the rolling frame (11), and the ball (9) is rollingly connected relative to the rolling frame (11).

8. The flexible screening machine according to claim 1, characterized in that: A first floating seat (19) is fixedly installed in the base (1) by bolts. The first floating seat (19) has two seats located at both ends of the main shaft (16). The outside of the main shaft (16) has two floating wheels. The two floating wheels are located in the two first floating seats (19) and are floatingly connected to the first floating seats (19).

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