Improved vibrating screen machine counterweight device

Abstract

The improved vibrating screen machine counterweight device overcomes the defects in the prior art, is reasonable in structure and convenient to operate, and solves the problems of complex adjustment, low efficiency and high labor intensity in the prior art through innovative design; in order to solve the technical problem, according to the technical scheme, the improved vibrating screen machine counterweight device is divided into two parts which are installed at the two ends of a vibrating motor shaft respectively, each part comprises a fixed base, an eccentric plate and a limiting mechanism, the fixed base is composed of a fixed base, a disc and a limiting ring, and the disc is arranged on the fixed base. The limiting mechanism comprises limiting blocks installed on the inner edge and the outer edge of the limiting ring, the eccentric plate comprises an inner eccentric plate and an outer eccentric plate, one end of the eccentric plate is installed on the fixed base and can rotate around the axis, and the other end of the eccentric plate makes contact with the limiting blocks and is limited; the device can be widely applied to material screening, impurity removal and other similar fields.

Description

Technical Field

[0001] The present invention relates to an improved counterweight device for a vibrating screen machine, belonging to the technical field of material screening and impurity removal. Background Art

[0002] In the industrial production processes of food, medicine, chemical industry, etc., material screening and impurity removal are indispensable technological processes. Traditional vibrating screen machines usually use vibrating motors as the excitation source, and change the screening state by adjusting the counterweight device at both ends of the motor shaft. However, the existing technologies have the following problems: 1. Complicated adjustment: The traditional counterweight device requires turning off the motor, removing components, manually adjusting the eccentric device, and then reinstalling the components, which consumes a large amount of time and labor.

[0003] 2. Low efficiency: Frequent disassembly and assembly result in long downtime and reduce production efficiency.

[0004] 3. High labor intensity: Operators need to manually adjust the position of heavy objects, increasing the labor intensity.

[0005] In view of the above problems, the present invention proposes a new type of counterweight device, which can quickly change the screening state by switching the rotation direction of the vibrating motor, without disassembling and assembling components, significantly improving the equipment efficiency and reducing the labor intensity. Summary of the Invention

[0006] The present invention overcomes the deficiencies of the existing technologies, and provides an improved counterweight device for a vibrating screen machine, which has a reasonable structure and convenient operation, and solves the problems of complicated adjustment, low efficiency and high labor intensity in the existing technologies through innovative design.

[0007] To solve the above technical problems, the technical solution adopted by the present invention is: an improved counterweight device for a vibrating screen machine, the counterweight device is divided into two parts, which are respectively installed at both ends of the vibrating motor shaft, and each part includes a fixed base, an eccentric plate and a limiting mechanism. The fixed base consists of a fixed pedestal, a disc and a limiting ring. The limiting mechanism includes limiting blocks installed on the inner edge and outer edge of the limiting ring. The eccentric plate includes an inner eccentric plate and an outer eccentric plate. One end of it is installed on the fixed pedestal and can rotate around the axis, and the other end contacts the limiting block and is limited.

[0008] Further, the fixed base is fixed into an integral component by a screw group, or is processed from a single raw material to ensure stable structure.

[0009] Further, the limiting blocks are fixed on the inner edge and outer edge of the limiting ring by a screw group, and the movement range of the eccentric plate can be changed by adjusting the installation position.

[0010] Furthermore, the rotation angle of the eccentric plate is restricted by a limit block to ensure that the eccentric moment is within a controllable range, thereby achieving precise screening.

[0011] Furthermore, the counterweight device is fixedly connected to the vibration motor shaft through a flat key pin to ensure synchronous rotation.

[0012] Furthermore, the movement direction of the eccentric plate changes with the rotation direction of the vibration motor, thereby quickly switching the screening state.

[0013] Furthermore, the installation position of the limit block is adjustable, and the operating state of the vibrating screen machine is optimized by changing the position of the limit block.

[0014] Furthermore, the counterweight device adopts a modular design, which is convenient for installation, maintenance and upgrade.

[0015] Furthermore, the disc design of the fixed base is used to balance the counterweight to ensure the stable operation of the vibrating screen machine.

[0016] Furthermore, the device can quickly switch the screening state by changing the rotation direction of the vibration motor, without disassembling and assembling components, significantly improving production efficiency and reducing labor intensity.

[0017] The counterweight device of the present invention includes two parts, which are respectively installed at both ends of the vibration motor shaft. Each part includes the following components: Fixed base: It consists of a fixed base, a disc and a limit ring, and is fixed as an integral component through a screw group.

[0018] Limit mechanism: It includes limit blocks installed on the inner and outer edges of the limit ring, and the limit blocks are fixed through a screw group.

[0019] Eccentric plate: It includes an inner eccentric plate and an outer eccentric plate. One end of it is installed on the fixed base and can rotate around the axis, and the other end contacts the limit block and is limited.

[0020] The working principle of the present invention: 1. Clockwise rotation: When the vibration motor rotates clockwise, the fixed base and its components rotate clockwise accordingly. Due to inertia, the eccentric plate rotates in the opposite direction relative to the fixed base until it contacts the limit block and stops, and then rotates clockwise with the fixed base.

[0021] 2. Counterclockwise rotation: When the vibration motor rotates counterclockwise, the eccentric plate also rotates in the opposite direction relative to the fixed base due to inertia until it contacts the limit block on the other side and stops, and then rotates counterclockwise with the fixed base.

[0022] 3. State adjustment: By changing the installation position of the limit block, the movement range of the eccentric plate can be adjusted, thereby optimizing the operating state of the vibrating screen machine.

[0023] The present invention relates to the following innovative points: 1. Quick switching mechanism: The screening state can be quickly switched by changing the rotation direction of the motor without disassembling and assembling components.

[0024] 2. Adjustable design of the limit block: The screening effect can be flexibly optimized by adjusting the position of the limit block.

[0025] 3. Modular structure: Facilitates installation, maintenance and upgrade, and reduces the use cost.

[0026] 4. High efficiency and energy saving: Reduces downtime, improves production efficiency and reduces energy consumption.

[0027] Through the innovative design of the counterweight device, the present invention solves the problems of complex adjustment, long downtime and high labor intensity of traditional vibrating screen machines. By changing the rotation direction of the vibrating motor, the operator can quickly switch the working state of the vibrating screen machine, significantly improving production efficiency and reducing the operation difficulty. The device has a reasonable structure and convenient adjustment, and is applicable to the screening and impurity removal scenarios of various fine materials.

[0028] The present invention has the following beneficial effects compared with the prior art.

[0029] 1. Quick switching: The screening state can be quickly adjusted only by changing the rotation direction of the vibrating motor without disassembling and assembling components.

[0030] 2. High-efficiency production: Significantly reduces downtime and improves production efficiency.

[0031] 3. Reduces labor intensity: The operation is simple and there is no need to manually adjust the position of heavy objects.

[0032] 4. Modular design: Facilitates installation, maintenance and upgrade.

[0033] 5. Strong adaptability: By adjusting the position of the limit block, it can adapt to different screening requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The following further describes the present invention with reference to the drawings.

[0035] Figure 1 It is a sectional structure diagram of a vibrating screen machine equipped with the counterweight device of the present invention.

[0036] Figure 2 It is an assembly schematic diagram of the fixed base of the new counterweight device (upper part).

[0037] Figure 3 It is a schematic diagram of the limit block structure.

[0038] Figure 4 It is an assembly schematic diagram of the new counterweight device (upper part).

[0039] Figure 5 It is an assembly schematic diagram of the new counterweight device (upper part) and the upper motor shaft.

[0040] Figure 6 It is an assembly schematic diagram of the fixed base of the new counterweight device (lower part).

[0041] Figure 7 It is an assembly schematic diagram of the new counterweight device (lower part).

[0042] Figure 8 It is an assembly schematic diagram of the new counterweight device (lower part) and the lower motor shaft.

[0043] Figures 9 to 16 It is a motion schematic diagram of the eccentric plate under different rotation directions.

[0044] In the figure: 1. Vibration sieve machine base; 2. Spring group; 3. Vibration body; 4. Vibration motor; 4a. Upper motor shaft; 4b. Lower motor shaft; 5. Grid; 6. Sieve surface; 7. New counterweight device (upper part); 8. New counterweight device (lower part); 9. First fixed base; 10. First fixed base; 11. First disc; 12. First limit ring; 13. First screw group; 14. Second screw group; 15. First flat key pin; 16. Third screw group; 17. First inner limit block; 18. Second inner limit block; 19. First outer limit block; 20. Second outer limit block; 21. First inner eccentric plate; 22. First outer eccentric plate; 23. Fourth screw group; 24. Second fixed base; 25. Second fixed base; 26. Second disc; 27. Second limit ring; 28. First gasket; 29. Fifth screw group; 30. Second flat key pin; 31. Sixth screw group; 32. Nut; 33. Third inner limit block; 34. Fourth inner limit block; 35. Third outer limit block; 36. Fourth outer limit block; 37. Second inner eccentric plate; 38. Second outer eccentric plate; 39. Seventh screw group; 40. Second gasket. Specific implementation manners

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0046] Please refer to Figures 1 to 16 , for further detailed discussion and to distinguish the positions and connection relationships of each component, the same components involved in the present invention are named in sequence as the first, the second, etc., which does not affect the protection scope of the present invention.

[0047] In an embodiment of the present invention, Referring to Figure 1 , the vibrating body 3 is mounted on the base 1 of the vibrating screen machine through a spring group 2. The screen surface 6 and the wire mesh frame 5 are fixed as a whole assembly in a specific manner, and the vibrating motor 4 is installed in the vibrating body 3. New counterweight devices (upper part) 7 and new counterweight devices (lower part) 8 are installed at both ends 4a and 4b of the motor shaft of the vibrating motor 4. The functions of the new counterweight device (upper part) 7 and the new counterweight device (lower part) 8 are to generate an asymmetric weight arrangement on the radial planes at both ends of the motor shaft. When the vibrating motor 4 operates, the new counterweight device (upper part) 7 and the new counterweight device (lower part) 8 also rotate accordingly and generate an eccentric moment, which cooperates with the spring group 2 to generate a vibration force, thereby driving the vibrating body 3 to move relative to the base 1 of the vibrating screen machine along a specific trajectory. By changing the settings of the eccentric plates inside the new counterweight device (upper part) 7 and the new counterweight device (lower part) 8, the movement trajectory of the vibrating body 3 can be changed, and then the operating state of the vibrating screen machine can be changed.

[0048] Referring to Figure 2 , the first fixed base 9 of the new counterweight device (upper part) 7 described in the present invention is an integral unit composed of a first fixed base 10, a first disc 11, and a first limiting ring 12, which are installed by a first screw group 13 and a second screw group 14 to form an integral assembly. It can also be assembled into an integral assembly in other forms, or processed from a single raw material into an integral assembly.

[0049] Referring to Figure 3 , the limiting block 17 of the new counterweight device (upper part) 7 described in the present invention is provided with several threaded holes 17b. The hole pitch of the threaded holes 17b is the same as the inner edge mounting holes 12a and the outer edge mounting holes 12b of the first limiting ring 12. The hole pitch of the threaded holes 17b is the same as the inner edge mounting holes 27a and the outer edge mounting holes 27b of the second limiting ring 27. The sizes and shapes of the remaining limiting blocks described in the present invention are the same as those of the limiting block 17.

[0050] Referring to Figure 4, one end of the first inner eccentric plate 21 has an inner circle 21a installed with the circular end 10a of the first fixed base 10 and can rotate around the axis of the first fixed base 10. The other end is placed at the inner edge position of the first limit ring 12 and is provided with two side surfaces 21c and 21d. One end of the first outer eccentric plate 22 has an inner circle 22a installed with the circular end 10a of the first fixed base 10 and can rotate around the axis of the first fixed base 10. The other end is placed at the outer edge position of the first limit ring 12 and is provided with two side surfaces 22c and 22d. A number of mounting holes 12a are provided on the inner edge of the first limit ring 12 to install the first inner limit block 17 and the second inner limit block 18 through the fourth screw group 23. A number of mounting holes 12b are provided on the outer edge of the first limit ring 12 to install the first outer limit block 19 and the second outer limit block 20 through the fourth screw group 23.

[0051] Refer to Figure 5 , the new counterweight device (upper part) 7 is fixedly installed with the upper motor shaft 4a through the third screw group 16, the second gasket 40 and the first flat key pin 15, and can also be installed and fixed with the upper motor shaft 4a in other ways.

[0052] Refer to Figure 6 , the second fixed base 24 of the new counterweight device (lower part) 8 described in the present invention is used as a whole unit and is installed by the fifth screw group 29 and the sixth screw group 31 with the second fixed base 25, the second disc 26 and the second limit ring 27 to form a whole assembly. It can also be installed and formed into a whole assembly in other forms, or processed from a single raw material into a whole assembly.

[0053] Refer to Figure 7 , one end of the second inner eccentric plate 37 has an inner circle 37a installed with the circular end 25a of the second fixed base 25 and can rotate around the axis of the first fixed base 10. The other end is placed at the inner edge position of the second limit ring 27 and is provided with two side surfaces 37c and 37d. One end of the second outer eccentric plate 38 has an inner circle 38a installed with the circular end 25a of the second fixed base 25 and can rotate around the axis of the second fixed base 25. The other end is placed at the outer edge position of the second limit ring 27 and is provided with two side surfaces 38c and 38d. A number of mounting holes 27a are provided on the inner edge of the second limit ring 27 to install the third inner limit block 33 and the fourth inner limit block 34 through the seventh screw group 39. A number of mounting holes 27b are provided on the outer edge of the second limit ring 27 to install the third outer limit block 35 and the fourth outer limit block 36 through the seventh screw group 39.

[0054] Refer to Figure 8 , the new counterweight device (lower part) 8 is fixedly installed with the lower motor shaft 4b through the nut 32, the first gasket 28 and the second flat key pin 30, and can also be installed and fixed with the lower motor shaft 4b in other ways.

[0055] Refer to in combination Figure 9 , Figure 11 , Figure 14 , Figure 15 , when the vibration motor 4 rotates clockwise, the first fixed base 9, the second fixed base 24 and the components mounted and fixed thereon also rotate clockwise. However, since all the first inner eccentric plates 21, the first outer eccentric plates 22, the second inner eccentric plates 37 and the second outer eccentric plates 38 are not limited, their rotational acceleration will be lower than that of the first fixed base 9, the second fixed base 24 and the components mounted and fixed thereon. Therefore, they rotate in the opposite direction relative to the first fixed base 9 and the second fixed base 24 until the side surface 21c of the first inner eccentric plate 21 contacts the side surface 17a of the first inner limiting block 17, the 22c of the first outer eccentric plate 22 contacts the 19a of the first outer limiting block 19, the side surface 37c of the second inner eccentric plate 37 contacts the side surface 33a of the third inner limiting block 33, and the side surface 38c of the second outer eccentric plate 38 contacts the side surface 35a of the third outer limiting block 35. Finally, the reverse rotational movements of these first inner eccentric plates 21, first outer eccentric plates 22, second inner eccentric plates 37 and second outer eccentric plates 38 relative to the first fixed base 9 and the second fixed base 24 are limited by the first inner limiting block 17, the first outer limiting block 19, the third inner limiting block 33 and the third outer limiting block 35 and stop, and then rotate clockwise with the first fixed base 9 and the second fixed base 24.

[0056] Refer to in combination Figure 10 , Figure 12 , Figure 13 , Figure 16, when the vibration motor 4 rotates counterclockwise, the first fixed base 9, the second fixed base 24, and the components mounted and fixed thereon also rotate counterclockwise. However, since all the first inner eccentric plates 21, the first outer eccentric plates 22, the second inner eccentric plates 37, and the second outer eccentric plates 38 are not restricted, their rotational acceleration will be lower than that of the first fixed base 9, the second fixed base 24, and the components mounted and fixed thereon. Therefore, they rotate in the opposite direction relative to the first fixed base 9 and the second fixed base 24 until the side surface 21d of the first inner eccentric plate 21 contacts the side surface 18a of the second inner limit block 18, the 22d of the first outer eccentric plate 22 contacts the 20a of the second outer limit block 20, the side surface 37d of the second inner eccentric plate 37 contacts the side surface 34a of the fourth inner limit block 34, and the side surface 38d of the second outer eccentric plate 38 contacts the side surface 36a of the fourth outer limit block 36. Finally, the reverse rotational movements of these first inner eccentric plates 21, first outer eccentric plates 22, second inner eccentric plates 37, and second outer eccentric plates 38 relative to the first fixed base 9 and the second fixed base 24 are restricted by the second inner limit block 18, the second outer limit block 20, the fourth inner limit block 34, and the fourth outer limit block 36 and stop, and then rotate counterclockwise with the first fixed base 9 and the second fixed base 24.

[0057] The present invention can also change the operating state of the vibrating screen machine by respectively changing the installation positions of the first inner limit block 17, the second inner limit block 18, the first outer limit block 19, the second outer limit block 20, the third inner limit block 33, the fourth inner limit block 34, the third outer limit block 35, and the fourth outer limit block 36 on the first limit ring 12 and the second limit ring 27, and then changing the positions of the first inner eccentric plate 21, the first outer eccentric plate 22, the second inner eccentric plate 37, and the second outer eccentric plate 38 on the first limit ring 12 and the second limit ring 27 when the vibration motor 4 rotates.

[0058] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. An improved counterweight device for a vibrating screen, characterized in that: The counterweight device is divided into two parts, which are respectively installed at the two ends of the vibration motor shaft. Each part includes a fixed base, an eccentric plate and a limiting mechanism. The fixed base is composed of a fixed base, a disc and a limiting ring. The limiting mechanism includes limiting blocks installed on the inner and outer edges of the limiting ring. The eccentric plate includes an inner eccentric plate and an outer eccentric plate, one end of which is installed on the fixed base and can rotate around the axis, and the other end is in contact with the limiting block and is limited.

2. An improved vibrating screen counterweight device according to claim 1, characterized in that: The fixed base is fixed as an integral component by a screw group, or is processed from a single raw material to ensure structural stability.

3. An improved vibrating screen counterweight device according to claim 1, characterized in that: The limiting block is fixed to the inner edge and the outer edge of the limiting ring by a screw group, and the movement range of the eccentric plate can be changed by adjusting the installation position.

4. An improved vibrating screen counterweight device according to claim 1, characterized in that: The rotation angle of the eccentric plate is limited by a limit block to ensure that the eccentric torque is within a controllable range, thereby achieving accurate screening.

5. An improved counterweight device for a vibrating screen according to claim 1, characterized in that: The counterweight device is fixedly connected to the vibration motor shaft through a flat key pin to ensure synchronous rotation.

6. An improved counterweight device for a vibrating screen according to claim 1, characterized in that: The moving direction of the eccentric plate changes with the rotation direction of the vibration motor, thereby quickly switching the screening state.

7. An improved counterweight device for a vibrating screen according to claim 1, characterized in that: The installation position of the limit block is adjustable, and the operating state of the vibrating screen machine can be optimized by changing the position of the limit block.

8. An improved counterweight device for a vibrating screen according to claim 1, characterized in that: The counterweight device adopts a modular design, which is easy to install, maintain and upgrade.

9. An improved counterweight device for a vibrating screen according to claim 1, characterized in that: The disc of the fixed base is designed to balance the weight to ensure stable operation of the vibrating screen machine.

10. An improved counterweight device for a vibrating screen according to claim 1, characterized in that: The device realizes rapid switching of screening states by changing the rotation direction of the vibration motor without disassembling components, thereby significantly improving production efficiency and reducing labor intensity.

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