Vibrating screen device with adjustable amplitude and using method thereof

Abstract

The invention discloses an amplitude-adjustable vibrating screen device and a using method thereof, and belongs to the technical field of screening equipment.The amplitude-adjustable vibrating screen device comprises a support, an elastic structure is arranged at the top of the support and connected with a supporting structure, a hopper is arranged at the top of the supporting structure, a vibrating motor is arranged on the side portion of the hopper and connected with a frequency converter, and the frequency converter is connected with the vibrating screen device. The frequency converter is connected with a power supply. According to the vibration screen device with the adjustable amplitude and the using method thereof, the overall structure of the vibration screen device is changed, the size and weight of a driving structure are reduced, the hopper is directly and effectively vibrated, the vibration effect is improved, meanwhile, the vibration screen device is matched with a frequency converter to achieve the effect that the amplitude of the whole device is adjustable according to actual production requirements, and the vibration screen device is convenient to use. The production efficiency is improved, and the manufacturing cost of the vibrating screen device and the later maintenance cost are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of screening equipment, and in particular to a vibrating screening device with adjustable amplitude and a use method thereof. Background Art

[0002] The vibrating screening equipment currently used in the food production field uses a transformer connected to a vibrating motor as a driving structure. In this driving mode, the power of the transformer is not high and the power of the vibrating motor is also low, which leads to problems such as insufficient vibration intensity and slow speed, and cannot meet the needs of many screening conditions in the production process.

[0003] like Figure 1 and Figure 2 The figure shows a schematic diagram of the vibrating screen equipment currently used in production, in which the transformer connected to the vibration motor as the driving structure is large in size and heavy in mass, and needs to be set as a whole at the bottom of the vibrating screen equipment. At the same time, the driving structure is connected to the frame, and a spring is set on the frame to connect with the hopper. The process of realizing the vibrating screen is: the driving structure drives the spring on the frame to move, and the spring drives the hopper to vibrate.

[0004] It is understandable that this method has a poor vibration effect due to the long vibration transmission process. If the vibration frequency of the driving structure end is simply increased, the joints of the various structures will be subject to greater friction and oscillation when the equipment is working, which can easily lead to problems such as wear, loosening, and falling off of mechanical parts. The equipment needs to be disassembled as a whole for repair, which is very troublesome to repair and maintain. In addition, the vibration motor of the current equipment needs to increase the vibration frequency when working, thereby generating greater noise, which is easy to affect the health of workers on production lines that require long hours of work.

[0005] In addition, the current drive structure may cause heat damage during operation due to abnormal vibration, power supply voltage problems, internal short circuit or foreign matter intrusion. For example, problems such as high or low power supply voltage, insufficient bearing lubricant, and poor rotor dynamic balance will cause the vibration motor to overheat, and long-term overload will affect the life of the vibration motor; power line failure, circuit breaker or contactor problems, motor internal wiring problems, etc. may cause the vibration motor to run in a phase-missing manner, which in turn causes the vibration motor to burn out; and because the original equipment transformer is of special specifications, the overall cost of the equipment and maintenance costs are high. Summary of the invention

[0006] In view of the problems existing in the prior art, the present invention provides a vibrating screening device with adjustable amplitude and a method for using the same. By changing the overall structure of the vibrating screening device and reducing the volume and weight of the driving structure, direct and effective vibration of the hopper can be achieved, thereby improving the vibration effect. At the same time, in conjunction with a frequency converter, the amplitude of the entire device can be adjusted according to actual production needs, thereby improving production efficiency and reducing the cost of the vibrating screening device and the subsequent maintenance cost.

[0007] The technical solution of the present invention is as follows:

[0008] In a first aspect of the present invention, there is provided a vibrating screen device with adjustable amplitude, comprising a bracket, a top of the bracket being provided with an elastic structure, the elastic structure being connected to a supporting structure, a top of the supporting structure being provided with a hopper, a side of the hopper being provided with a vibration motor, the vibration motor being connected to a frequency converter, and the frequency converter being connected to a power supply.

[0009] In some embodiments of the present invention, the bracket is provided with a plurality of support columns, and a support seat is provided at the bottom of each support column.

[0010] In some embodiments of the present invention, the elastic structure is configured as a plurality of springs, one end of the plurality of springs is connected to the top of the bracket, and the other end of the plurality of springs is connected to the bottom of the support structure, and the support structure is configured in a rectangular structure.

[0011] In some embodiments of the present invention, the plurality of springs have the same height and are respectively connected to the four corners of the bottom of the supporting structure in a rectangular structure.

[0012] In some embodiments of the present invention, the interior of the support structure is arranged as a cavity, and the top of the support structure is connected to the bottom of the hopper.

[0013] In some embodiments of the present invention, the hopper is configured as a dustpan-shaped shovel-like structure, and the connection position between the side wall of the hopper and the bottom plate of the hopper is configured as an arc chamfered structure; the hopper is provided with a screen, and the screen is set at a certain distance from the bottom plate of the hopper.

[0014] In some embodiments of the present invention, the vibration motor is provided with a motor mounting seat, and the motor mounting seat is detachably connected to the side wall of the hopper.

[0015] In some embodiments of the present invention, the hopper is provided with a hopper outlet, and the width of the hopper outlet is smaller than the width of the hopper side wall away from the hopper outlet.

[0016] In some embodiments of the present invention, the motor mounting seat is mounted on a side wall of the hopper opposite to the hopper outlet.

[0017] In a second aspect of the present invention, a method for using a vibrating screen device with adjustable amplitude is provided, comprising:

[0018] Install a vibrating motor on the side wall of the hopper, place the screen on the hopper, and place the vibrating screen device at a reasonable position on the production line so that the material can enter from the top of the hopper;

[0019] After the vibrating screen device is connected to the power supply, the frequency converter is adjusted to adjust the amplitude of the vibration motor according to the actual processing situation. The elastic structure amplifies the amplitude of the hopper so that the material in the hopper is fully vibrated and screened. Part of the material passes through the screen on the hopper and falls to the bottom plate of the hopper, and the rest of the material is discharged from the hopper outlet to the next workstation.

[0020] One or more technical solutions of the present invention have the following beneficial effects:

[0021] The present invention provides an amplitude-adjustable vibrating screen device and a method for using the same. By changing the overall structure of the vibrating screen device, the volume and weight of the driving structure are reduced, and direct and effective vibration of the hopper is achieved, thereby improving the vibration effect. At the same time, the frequency converter is used to adjust the amplitude of the entire device according to actual production needs, thereby improving production efficiency and reducing the cost of the vibrating screen device and the subsequent maintenance cost.

[0022] The present invention sets the driving structure to connect the vibration motor with the frequency converter, directly installs the vibration motor on the bucket body of the vibrating screening hopper, cooperates with the elastic structure to realize direct and effective vibration of the hopper, improves the vibration effect, and leads the control circuit of the vibration motor to the frequency converter. The production personnel can control the frequency converter to adjust the amplitude of the vibration motor according to the actual production needs, thereby meeting many screening working conditions, being convenient and stable to use, and reducing the failure rate.

[0023] The vibrating screen device provided by the present invention has good vibration effect, stable overall structure, low cost, low noise during use, and convenient device maintenance. During maintenance, there is no need to disassemble the vibrating screen frame, thereby reducing maintenance time and employee labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of a vibrating screen device in the prior art;

[0025] Figure 2 It is a schematic diagram of the hopper structure of the vibrating screening equipment in the prior art;

[0026] Figure 3 This is a schematic diagram of the overall structure of a vibrating screen device with adjustable amplitude provided in Example 1 of the present invention;

[0027] Figure 4 A schematic diagram of the structure of a hopper of a vibrating screening device with adjustable amplitude provided in Example 1 of the present invention;

[0028] Figure 5 A schematic diagram of the structure of a hopper and a screen mesh of a vibrating screening device with adjustable amplitude provided in Example 1 of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of a vibration motor of a vibrating screen device with adjustable amplitude provided in Example 1 of the present invention.

[0030] In the figure: 1. driving structure; 2. vibration motor; 3. hopper; 4. supporting structure; 5. elastic structure; 6. bracket; 7. supporting seat; 8. screen; 9. hopper outlet; 10. motor mounting seat; 11. hopper bottom plate. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] The vibration effect of existing vibrating screen equipment is poor due to the long transmission process of vibration. If the vibration frequency of the driving structure is simply increased, the joints of the structures will be subject to greater friction and oscillation when the equipment is working, which can easily lead to problems such as wear, loosening, and falling of mechanical parts. The equipment needs to be disassembled as a whole for repair, which is very troublesome to repair and maintain. In addition, the vibration motor of the current equipment needs to increase the vibration frequency when working, thereby generating greater noise, which is easy to affect the health of workers on production lines that require long hours of work.

[0033] In addition, the current driving structure of the vibrating screen equipment may cause heat damage during operation due to abnormal vibration, power supply voltage problems, internal short circuit or foreign matter intrusion. For example, problems such as high or low power supply voltage, insufficient bearing lubricating oil, and poor rotor dynamic balance will cause the vibration motor to overheat, and long-term overload will affect the life of the vibration motor; and power line failure, circuit breaker or contactor problems, motor internal wiring problems, etc. may cause the vibration motor to run in a phase-missing manner, which in turn causes the vibration motor to burn out; and because the original equipment transformer is of special specifications, the overall cost of the equipment and maintenance costs are relatively high. For this purpose, a vibrating screen device with adjustable amplitude and a method for using the same are provided.

[0034] Example 1

[0035] In a typical embodiment of the present invention, a vibrating screen device with adjustable amplitude is proposed, including a bracket 6, an elastic structure 5 is provided on the top of the bracket 6, the elastic structure 5 is connected to the supporting structure 4, a hopper 3 is provided on the top of the supporting structure 4, a vibration motor 2 is provided on the side of the hopper 3, the vibration motor 2 is connected to a frequency converter, and the frequency converter is connected to a power supply.

[0036] In this way, by changing the overall structure of the vibrating screen device, the volume and weight of the driving structure 1 are reduced, and the direct and effective vibration of the hopper 3 is achieved, thereby improving the vibration effect. At the same time, the frequency converter is used to realize the adjustable amplitude of the device as a whole according to the actual production needs, thereby improving the production efficiency and reducing the cost of the vibrating screen device and the subsequent maintenance cost.

[0037] Furthermore, the bracket 6 is provided with a plurality of support columns, and a support seat 7 is provided at the bottom of the support column. In this embodiment, there are four support columns in total, and the overall bracket 6 structure is a rectangular bracket 6. A crossbeam is provided between each support column to connect with each other to improve the stability of the bracket 6 and prevent the device from being damaged during vibration. A support seat 7 is provided at the part where each support column contacts the ground, and the support seat 7 is provided in a disc-shaped structure, so that the support column can be stably placed on the ground.

[0038] Furthermore, the elastic structure 5 is configured as a plurality of springs, one end of the plurality of springs is connected to the top of the bracket 6, and the other end of the plurality of springs is connected to the bottom of the support structure 4, and the support structure 4 is configured in a rectangular structure.

[0039] Furthermore, the heights of the plurality of springs are consistent, and they are respectively connected to the four corners of the bottom of the rectangular support structure 4. In this embodiment, there are eight springs in total, and two springs are respectively provided at the four corners of the bottom of each support structure 4, so that the bracket 6 is connected to the support structure 4. By setting the springs, the vibration motor 2 starts to vibrate the hopper 3, and the hopper 3 drives the support structure 4 to vibrate. At this time, the spring connected to the bottom of the support structure 4 can amplify the vibration of the hopper 3, so as to achieve full vibration screening of the material for the hopper 3. Such a setting can achieve a larger amplitude of the hopper 3 by supplying a lower power to the vibration motor 2 and cooperating with the spring, so as to ensure that the hopper 3 can fully vibrate while saving energy and reducing the use cost.

[0040] Furthermore, the interior of the support structure 4 is a cavity, and the top of the support structure 4 is connected to the bottom of the hopper 3. This arrangement ensures that the support structure 4 has a certain support strength while reducing the weight of the support structure 4, so that the vibrating screen device can vibrate the material through a smaller driving force in conjunction with the spring, and is convenient for adjusting the amplitude.

[0041] Further, the hopper 3 is provided with a shovel-like structure in the shape of a dustpan, and the connection position between the side wall of the hopper 3 and the bottom plate of the hopper 3 is provided with a circular arc chamfered structure. The hopper 3 is provided with a screen 8, and the screen 8 is provided at a certain distance from the bottom plate 11 of the hopper.

[0042] Such a configuration can make it easier for the material to slide through the hopper outlet 9 to the next station after vibration screening, while avoiding too many edges and corners to cause collision and injury to the operator. In addition, by placing the screen 8 on the bottom plate of the hopper 3 at a certain distance from the hopper bottom plate 11, the hopper 3 has an upper and lower layered structure, thereby achieving separation of the material during vibration screening, part of the material passes through the screen 8 on the hopper 3 and falls to the position of the hopper bottom plate 11, and the rest of the material is discharged from the hopper outlet 9 to the next station.

[0043] It is understandable that material fragments will be generated during the vibration screening process and need to be separated. In this embodiment, a screen 8 is arranged on the hopper bottom plate 11 to achieve material separation. At the same time, a shielding structure is provided at a position of the screen 8 close to the hopper outlet 9 to contact the hopper bottom plate 11, so that when the material is vibrated onto the hopper bottom plate 11 at the bottom of the screen 8, it will be blocked by the shielding structure and will not slide to the hopper outlet 9 to enter the next workstation, while the material above the screen 8 will be discharged from the hopper outlet 9 to the next workstation through vibration screening.

[0044] Furthermore, the vibration motor 2 is provided with a motor mounting seat 10, and the motor mounting seat 10 is detachably connected to the side wall of the hopper 3. With such a configuration, when the device is repaired and maintained, the vibration motor 2 can be disassembled without disassembling the vibration screen bracket 6, thereby reducing the maintenance time and the labor intensity of employees. At the same time, a suitable vibration motor 2 can be selected and installed on the side wall of the hopper 3 according to the actual processing situation, thereby increasing the practicality of the device.

[0045] Furthermore, the hopper 3 is provided with a hopper outlet 9, the width of which is smaller than the width of the side wall of the hopper 3 away from the hopper outlet 9. In actual use, the hopper outlet 9 can be arranged to be inclined a certain distance toward the support structure 4 to facilitate the discharge of the vibrating screened material.

[0046] Further, the motor mounting seat 10 is mounted on the side wall of the hopper 3 opposite to the hopper outlet 9. Such an arrangement can make the overall vibration of the hopper 3 more symmetrical and reasonable, so that the vibration motor 2 can fully vibrate the hopper 3 and achieve sufficient vibration screening of the material.

[0047] In a second aspect of the present invention, a method for using a vibrating screen device with adjustable amplitude is provided, comprising:

[0048] Install a vibration motor 2 on the side wall of the hopper 3, and place the screen 8 on the hopper 3, and place the vibrating screen device at a reasonable position of the production line so that the material can enter from the top of the hopper 3;

[0049] After the vibrating screening device is connected to the power supply, the frequency converter is adjusted to adjust the amplitude of the vibration motor 2 according to the actual processing situation, and the elastic structure 5 amplifies the amplitude of the hopper 3, so that the material in the hopper 3 is fully vibrated and screened, and part of the material passes through the screen 8 on the hopper 3 and falls to the position of the hopper bottom plate 11, and the remaining material is discharged from the hopper outlet 9 to the next workstation.

[0050] Different from the existing vibrating screening equipment, the present invention sets the driving structure 1 to connect the vibration motor 2 with the frequency converter, directly installs the vibration motor 2 on the bucket body of the vibrating screening hopper 3, cooperates with the elastic structure 5 to realize direct and effective vibration of the hopper 3, improves the vibration effect, and leads the control circuit of the vibration motor 2 to the frequency converter. The production personnel can control the frequency converter to adjust the amplitude of the vibration motor 2 according to the actual production needs, thereby meeting many screening conditions, being convenient and stable to use, and reducing the failure rate;

[0051] The vibrating screen device provided by the present invention has good vibration effect, stable overall structure, low cost, low noise during use, and convenient device maintenance. During maintenance, there is no need to disassemble the vibrating screen frame, thereby reducing maintenance time and employee labor intensity.

[0052] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A vibrating screen device with adjustable amplitude, characterized in that: It comprises a bracket, the top of which is provided with an elastic structure, the elastic structure is connected to a supporting structure, the top of the supporting structure is provided with a hopper, the side of the hopper is provided with a vibration motor, the vibration motor is connected to a frequency converter, and the frequency converter is connected to a power supply.

2. A vibrating screen device with adjustable amplitude as claimed in claim 1, characterized in that: The bracket is provided with a plurality of support columns, and a support seat is provided at the bottom of the support column.

3. A vibrating screen device with adjustable amplitude as claimed in claim 1, characterized in that: The elastic structure is configured as a plurality of springs, one end of the plurality of springs is connected to the top of the bracket, and the other end of the plurality of springs is connected to the bottom of the supporting structure, and the supporting structure is configured in a rectangular structure.

4. A vibrating screen device with adjustable amplitude as claimed in claim 3, characterized in that: The multiple springs have the same height and are respectively connected to the four corners of the bottom of the supporting structure in a rectangular structure.

5. The vibration screen device with adjustable amplitude as claimed in claim 1, characterized in that: The interior of the support structure is arranged as a cavity, and the top of the support structure is connected to the bottom of the hopper.

6. A vibrating screen device with adjustable amplitude as claimed in claim 1, characterized in that: The hopper is arranged in a dustpan-shaped shovel-like structure, and the connection position between the side wall of the hopper and the bottom plate of the hopper is arranged in an arc chamfered structure; a screen is arranged on the hopper, and the screen is arranged at a certain distance from the bottom plate of the hopper.

7. A vibrating screen device with adjustable amplitude as claimed in claim 6, characterized in that: The vibration motor is provided with a motor mounting seat, and the motor mounting seat is detachably connected to the side wall of the hopper.

8. A vibrating screen device with adjustable amplitude as claimed in claim 7, characterized in that: The hopper is provided with a hopper outlet, and the width of the hopper outlet is smaller than the width of the hopper side wall away from the hopper outlet.

9. A vibrating screen device with adjustable amplitude as claimed in claim 8, characterized in that: The motor mounting seat is mounted on the hopper side wall opposite to the hopper outlet.

10. A method for using a vibrating screen device with adjustable amplitude according to any one of claims 1 to 9, characterized in that: include: Install a vibration motor on the side wall of the hopper, place the screen on the hopper, and place the vibrating screen device at a reasonable position on the production line so that the material can enter from the top of the hopper; After the vibrating screen device is connected to the power supply, the frequency converter is adjusted to adjust the amplitude of the vibration motor according to the actual processing situation. The elastic structure amplifies the amplitude of the hopper so that the material in the hopper is fully vibrated and screened. Part of the material passes through the screen on the hopper and falls to the bottom plate of the hopper, and the rest of the material is discharged from the hopper outlet to the next workstation.

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