CN114405806A

CN114405806A - System for controlling movement track of material feeding of vibrating screen, application and control method thereof

Info

Publication number: CN114405806A
Application number: CN202111564768.8A
Authority: CN
Inventors: 李斌; 李博; 刘亚飞; 陈彦彬
Original assignee: Beijing Easpring Material Technology Co Ltd
Current assignee: Beijing Easpring Material Technology Co Ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-04-29
Anticipated expiration: 2041-12-20
Also published as: CN114405806B

Abstract

The invention provides a system for controlling the movement track of material feeding of a vibrating screen, and an application and a control method thereof, belonging to the technical field of material screening. The system comprises a vibration motor, wherein the upper side and the lower side of the vibration motor are respectively provided with a weight biasing hammer, the weight biasing hammer is driven by the vibration motor through a motor shaft to rotate, and the system also comprises a control device which utilizes the relative rotation of the weight biasing hammer and an end cover of the vibration motor to change the horizontal included angle between the weight biasing hammers at the upper side and the lower side. According to the invention, the eccentric weight hammers are driven by the vibration motor through the motor shaft to perform circular motion, and the horizontal included angle between the eccentric weight hammers on the upper side and the horizontal included angle between the eccentric weight hammers on the lower side are changed through the control device, so that the included angle is adjusted on line, the movement track of material on a screen is controlled, the whole screen surface is fully utilized for screening, and the working efficiency of the screening machine is improved.

Description

System for controlling movement track of material feeding of vibrating screen, application and control method thereof

Technical Field

The invention relates to the technical field of material screening, in particular to a system for controlling the movement track of material feeding of a vibrating screen;

the invention also relates to an application of the system;

the invention also relates to a control method for controlling the movement track of the material feeding of the vibrating screen based on the system.

Background

The screening of fine powder materials, particularly the last screening before the delivery of the existing lithium battery anode material, mainly uses a 400-500 mesh vibrating screen. The working principle is as follows: the vibrating motor shown in fig. 4 drives the screen frame to swing, so as to generate three-dimensional low-frequency vibration, and materials can be uniformly distributed on the screen surface. When the material is distributed more evenly, the screening area is larger, and the screening speed is faster. Whether the materials on the screen can be uniformly distributed is directly related to the walking track of the materials, and the walking track of the materials is determined according to the angle of the included angle of the two inclined counter weights on the vibration motor as shown in fig. 5.

Theoretically, the amount of material to be sieved is equal to the area of the screen mesh in contact with the material x the speed of passing a single screen mesh x the time. The material passing speed of a single screen hole is determined by the material shape and the screen hole diameter and is an unchangeable parameter. Then, if time reduction and efficiency improvement are desired, the area of the screen contacting the material is maximized.

In practical work, due to the limitation of the size of the screen, the screen cannot be made to be large, so that after materials enter the screen from the center of the screen, the distance from the center to the frame is short, and a large number of materials reach the edge of the screen frame and are stacked without passing through the screen. And most of the surfaces of the screens are free of materials, so that the screening efficiency of the vibrating screen is reduced, as shown in figure 6.

If the feeding amount needs to be controlled, the materials need to be continuously fed at an extremely uniform speed, so that the materials entering the screening machine at any time pass through the screen before reaching the edge of the screen frame, and the area of the screen can be fully utilized to improve the efficiency of the screening machine. However, it is difficult to control the feeding in the actual operation process. The material is more discharged and accumulated, the material is less discharged, and the utilization rate of the screen area is reduced.

Even the ultrasonic oscillator is all equipped with to present screen cloth, the effect of device also only accelerates to pass through with screen cloth contact material rapidly, can not influence the movement track of material on the sieve, just also can't increase material and screen cloth effective area that contacts.

Ideally, all material is distributed evenly across the entire surface of the screen during the screening process. However, how to adjust the included angle of the weight bias on line at any time in the operation process is difficult to achieve.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

In order to solve the technical problem, the invention provides a system for controlling the movement track of the material on the screen of the vibrating screen, which realizes the online adjustment of the horizontal included angle by designing a control device for changing the horizontal included angle between the heavy hammers on the upper side and the lower side of the vibrating motor, thereby achieving the control of the movement track of the material on the screen, fully utilizing the whole screen surface for screening and improving the working efficiency of the screening machine.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a system for controlling the movement track of the material loading of a vibrating screen comprises a vibrating motor, wherein the upper side and the lower side of the vibrating motor are respectively provided with a weight deviation, and the weight deviation is driven by the vibrating motor through a motor shaft to rotate, generally mainly in the horizontal direction. The system also comprises a control device which utilizes the relative rotation of the weight deviation hammer and the end cover of the vibration motor to change the horizontal included angle between the weight deviation hammers at the upper side and the lower side, and is used for controlling the movement track of the material on the screen.

The relative rotation of the weight deviation hammer and the end cover of the vibration motor generates an electromagnetic induction phenomenon, and the induction current drives the control device, so that the system can spontaneously change the horizontal included angle between the weight deviation hammers at the upper side and the lower side under the condition of not needing any external acting force.

The control device is alternatively arranged on one side of the weight-biased hammer on the upper side and the lower side. The weight can be a weight bias hammer arranged above the vibration motor or a weight bias hammer arranged below the vibration motor. The weight-deviating hammer is connected with the motor shaft through a bearing.

The control device mainly comprises: the device comprises a first gear, a forward and reverse force action mechanism, a driving motor and the like.

The first gear is fixedly connected to the periphery of the motor shaft and used for synchronously moving with the motor shaft. The bearing can be coaxially arranged on the upper side or the lower side of the first gear, and can also be coaxially arranged on the upper side and the lower side of the first gear.

The forward and reverse force action mechanism is arranged inside and/or outside the weight-biasing shell, and the downstream end of the forward and reverse force action mechanism is in transmission connection with the gear and is used for applying a force which is the same as or opposite to the original rotation direction of the gear I; preferably, the forward/reverse force application mechanism is disposed inside the weight housing.

The driving motor is in transmission connection with the upstream end of the forward and reverse force action mechanism and used for providing driving force for the forward and reverse force action mechanism and further providing interaction force for the first gear. Preferably, the driving motor is disposed at the head of the weight.

Further, the electric energy supply device of the driving motor may be any other form of power supply, and the present invention preferably includes:

the winding coil is arranged at the head of the eccentric weight;

the magnetic component is fixed on the end cover of the vibration motor close to one side of the heavy-biased hammer;

when the winding coil and the magnetic component move relatively, electric energy is generated by utilizing the magnetic line cutting principle so as to be used by the driving motor. Preferably, the magnetic component is a magnet.

The magnetic assembly may be disposed around the end cap for a full circle, or a plurality of magnets may be distributed along the circumference of the end cap.

Preferably, a control circuit is provided between the electric energy supply device and the driving motor.

More preferably, the control circuit may be embedded with a pre-programmed program to control the driving motor to rotate forward or backward.

Further preferably, the control circuit may be connected to a remote control receiving module to control the driving motor to rotate forward and backward and accelerate and decelerate, and meanwhile, the control circuit performs manual interference through remote control to achieve flexible and diverse control.

Preferably, the control circuit is a control circuit with a single chip microcomputer as a core, so that the space occupied by a large number of peripheral independent elements can be saved.

The drive motor is preferably a micro stepper motor.

Further, the forward and reverse force action mechanism is a gear set or a transmission belt comprising a plurality of gears; preferably a gear set comprising several gears.

The upstream end of the gear set or the transmission belt is in transmission connection with the driving motor; the downstream end of the gear set or the transmission belt is in transmission connection with the gear.

Because various parts including the first gear, the forward and reverse force action mechanism, the driving motor and the like are required to be arranged inside the weight-biased hammer body, the thickness of the weight-biased hammer can be increased, but the total weight cannot be increased due to the fact that the inner gap of the weight-biased hammer is enlarged, and the working characteristics of the original vibrating screen cannot be changed.

Meanwhile, the invention also provides application of the system for controlling the movement track of the material loading of the vibrating screen to a screening device.

In addition, the invention also provides a method for controlling the movement track of the material on the screen of the vibrating screen by using the system for controlling the movement track of the material on the screen of the vibrating screen, which comprises the following steps:

s1: the weight deviation hammer is driven by the vibration motor through a motor shaft to rotate;

s2: the rotation initiation control device changes the horizontal included angle between the heavy hammers at the upper side and the lower side;

s3: and the horizontal included angle changes and controls the movement track of the material on the screen of the vibrating screen.

The step S2 specifically includes: in step S2, the driving motor is triggered to rotate to control the forward/reverse force action mechanism to move forward or reversely; the forward and reverse force action mechanism controls the certain horizontal included angle between the weight deviation and the other weight deviation through the interaction force with the first gear, and further controls the movement track of the material on the screen.

The process of rotating the drive motor includes: the winding coil and the magnetic component fixed on the end cover do relative motion to generate electric energy for the control circuit and the driving motor to use; therefore, the sieve can spontaneously generate electric energy and adjust automatically during operation.

Preferably, the driving motor controls the forward and reverse force action mechanism to move forward or reversely according to a pre-programmed program.

Compared with the prior art, the invention designs the control device for changing the horizontal included angle between the weight-biased hammers on the upper side and the lower side of the vibrating motor, can realize that the included angle of the weight-biased hammers is automatically changed under the condition of no external force during operation, so that materials on the screen continuously move from the center to the periphery and then move from the periphery to the center in a cycle, namely, the travel path of the materials on the screen is increased, namely, the materials do plane motion on the screen most of time and cannot be accumulated in the center or the periphery. Therefore, the working efficiency of the screen surface of the screen can be improved by utilizing the whole screen surface to the greatest extent as possible, so that the screening speed is increased, and the working efficiency of the screening machine is improved.

Meanwhile, the adjustment scale of the included angle of the upper and lower side deflection counterweights is fine, the adjustment and control can be flexibly carried out according to requirements, and the operation is simple and easy to realize.

Drawings

In order to more clearly illustrate the technical solutions of the background and the embodiments of the present invention, the drawings needed to be used in the background and the embodiments will be briefly described below, it should be understood that the following drawings may only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that for a person skilled in the art, other related drawings may be obtained from these drawings without inventive effort.

FIG. 1 is a schematic top and side sectional views of the weight and the control device in embodiment 1;

FIG. 2 is a schematic view of a combination of the vibration motor, the weight bias and the power supply device in embodiment 1;

FIG. 3 is a bottom view of FIG. 2;

fig. 4 is a schematic structural view of a vibration motor in the prior art;

FIG. 5 is a diagram of the relationship between the material movement track and the horizontal angle between the upper and lower deflection weights of the vibration motor in the prior art;

fig. 6 is a schematic diagram of the change of material feeding and blanking in the prior art.

Description of the main element symbols:

1-a vibration motor; 2-end cap; 3-a magnet; 4-weight bias; 5-motor shaft; 6-a bearing; 7-gear one; 8-gear set positioning bearing; 9-gear set; 10-a drive motor; 11-a winding coil; 12-control circuit.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "plurality" or "a number" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example 1

A system for controlling the movement track of the material on the screen of a vibrating screen is shown in figures 2 and 3 and comprises a vibrating motor 1, wherein the upper side and the lower side of the vibrating motor 1 are respectively provided with a weight bias, and the weight bias is driven by the vibrating motor 1 through a motor shaft 5 to rotate, generally in the horizontal direction. The system also comprises a control device which utilizes the relative rotation of the weight deviation hammer and the end cover of the vibration motor to change the horizontal included angle between the weight deviation hammers at the upper side and the lower side, and is used for controlling the movement track of the material on the screen.

In this embodiment, the control device is disposed on the weight 4 below the vibration motor 1.

As shown in fig. 1, the control device mainly includes: a first gear 7, a positive and negative force action mechanism, a driving motor 10 and the like.

And the first gear 7 is fixedly connected to the periphery of the motor shaft 5 and is used for synchronously moving with the motor shaft 5.

The forward and reverse force action mechanism is arranged in the shell of the weight bias 4 and comprises a plurality of gear sets 9, and each gear in the gear sets 9 is provided with a gear set positioning bearing 8 and is fixed relative to the weight bias 4; the upstream end of the driving motor is in transmission connection with a driving motor 10; the downstream end of the gear set 9 is in transmission connection with the first gear 7 and is used for applying force to the first gear 7, wherein the force is the same as or opposite to the original rotation direction of the first gear.

The driving motor 10, which is a micro stepping motor in this embodiment, is disposed at the head of the weight bias 4, and is in transmission connection with the upstream end of the gear set 9 to provide a driving force for the gear set 9, so as to generate an interaction force with the first gear 7.

Referring to fig. 1-3, the weight 4 is connected to the motor shaft 5 through two bearings 6, so that the weight 4 can move in a circular motion relative to the motor shaft 5. A first gear 7 fixed on the motor shaft 5 is meshed with a gear set 9, and under the condition that the gear set 9 has no external force, the weight bias 4 follows the motor shaft 5 to do circular motion.

Further, the electric power supply device to which the driving motor 10 is connected includes:

a winding coil 11 arranged at the head of the weight-biasing bit 4;

the magnet 3 is fixed on the end cover 2 of the vibration motor 1 close to one side of the heavy deflection hammer 4;

when the winding coil 11 and the magnet 3 move relatively, electric energy is generated by utilizing the magnetic line cutting principle so as to be used by the driving motor 10.

The magnet 3 is a plurality of magnets distributed along the circumference of the end cap.

In this embodiment, a control circuit 12 is disposed between the electric energy supply device and the driving motor 10.

The control circuit 12 is embedded with a pre-programmed program to control the driving motor 10 to rotate in forward or reverse directions.

As a preferred embodiment of this embodiment, the control circuit 12 may be connected to a remote control receiving module to control the driving motor 10 to rotate forward and backward and accelerate and decelerate, and at the same time, the control circuit performs human intervention through remote control to achieve flexible and diverse control.

In this embodiment, the control circuit 12 is a control circuit with a single chip as a core, so that a large amount of space occupied by peripheral independent elements can be saved.

In this embodiment, the parts including the first gear 7, the gear set 9, the driving motor 10, etc. are disposed inside the main body of the weight bias 4, so that the thickness of the weight bias 4 is increased from the original 24 mm to 30 mm, but the total weight is not increased due to the increased inner gap, and the working characteristics of the original vibrating screen are not changed.

Meanwhile, the embodiment also provides application of the system for controlling the movement track of the material on the screen of the vibrating screen to a screening device.

In addition, the embodiment further provides a method for controlling the movement track of the material on the screen of the vibrating screen by using the system for controlling the movement track of the material on the screen of the vibrating screen, which comprises the following steps:

when the vibration motor is started, the action of the eccentric weight hammer 4 is completely consistent with that of the vibration motor in the prior art, and a vibration effect is achieved.

The weight 4 is driven by the motor shaft 5 to move in a circular motion relative to the end cap 2. Meanwhile, the winding coil 11 inside the weight-biased hammer 4 also makes relative motion with the magnet 3 fixed on the end cover 2, and the winding coil 11 cuts the magnetic line of force of the magnet 3 to generate electric energy for the control circuit 12 and the driving motor 10 inside the weight-biased hammer 4 to use.

After the control circuit 12 obtains electric energy, the internal single chip microcomputer starts to operate, and controls the driving motor 10 to rotate forwards or backwards according to a pre-programmed program. The gear set 9 is driven to move by the rotation of the driving motor 10. Subsequently, the output torque of the driving motor 10 is amplified by the gear set 9 and acts on the first gear 7 fixed on the motor shaft 5, and the first gear 7 is fixed on the motor shaft 5, so that the reaction force can make the deflection hammer 4 and the motor shaft 5 move relatively to each other, the purpose of changing the included angle between the upper deflection hammer and the lower deflection hammer is achieved, and the purpose of controlling the movement track of the oversize material is achieved.

In the embodiment, the driving motor 10 adopts a micro stepping motor and is directly driven by a single chip microcomputer, so that the occupation of space can be reduced. Besides, the core of the control circuit 12 is a single chip microcomputer, which can control the periodic rotation of the deflection hammer 4 and the motor shaft 5 according to a pre-programmed program, and can also be connected to a simple remote control receiving module to perform forward and reverse rotation and acceleration and deceleration control. Therefore, the control program can be more flexible to meet the screening requirements of different materials.

Under the condition that all parameters such as power of a vibration motor, diameter of a screen, aperture of a screen hole and the like are completely the same, the screening capacity of the vibration screen with the adjustable included angle of the polarization hammer is 2-3 times of that of the vibration screen with the unchangeable included angle of the polarization hammer.

In the description herein, references to the description of the terms "one embodiment," "some embodiments," "preferred embodiments," "specific embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A system for controlling the movement track of the material loading of a vibrating screen comprises a vibrating motor, wherein the upper side and the lower side of the vibrating motor are respectively provided with a weight deviation, and the weight deviation is driven by the vibrating motor through a motor shaft to rotate; the device is characterized by further comprising a control device for changing a horizontal included angle between the upper and lower heavy hammers by utilizing the relative rotation of the heavy hammer and an end cover of the vibration motor, and the control device is used for controlling the movement track of the material on the screen.

2. The system of claim 1, wherein the relative rotation of the weight bias and the end cap of the vibration motor generates current to drive the control device through electromagnetic induction phenomenon;

preferably, the control device is alternatively arranged on one side of the weight-biasing hammer on the upper side and the lower side.

3. The system of claim 2, wherein the control means comprises:

the first gear is fixedly connected to the periphery of the motor shaft;

the forward and reverse force action mechanism is arranged inside and/or outside the weight-biasing shell, and the downstream end of the forward and reverse force action mechanism is in transmission connection with the gear and is used for applying a force which is the same as or opposite to the original rotation direction of the gear I;

and the driving motor is in transmission connection with the upstream end of the forward and reverse force action mechanism and is used for providing driving force for the forward and reverse force action mechanism.

4. The system of claim 3, wherein the electric power supply means of the drive motor comprises:

the winding coil is arranged at the head of the eccentric weight;

the winding coil and the magnetic component generate electric energy when moving relatively to be used by the driving motor.

5. The system of claim 3, wherein a control circuit is provided between the power supply and the drive motor;

preferably, a program which is programmed in advance is arranged in the control circuit to control the driving motor to rotate forwards or backwards;

preferably, the control circuit is connected with a remote control receiving module to control the driving motor to rotate forward and backward and accelerate and decelerate;

preferably, the control circuit is a control circuit with a single chip microcomputer as a core.

6. The system of claim 3, wherein the drive motor is a micro stepper motor;

preferably, the driving motor is disposed at the head of the weight.

7. The system of claim 3, wherein the positive and negative force mechanism is a gear train or belt comprising a plurality of gears;

8. Use of a system for controlling the motion profile of a vibrating screen feed according to any one of claims 1 to 7 on a screening device.

9. A method of controlling the motion profile of a screen charge of a vibrating screen according to the system of any one of claims 1 to 7, comprising the steps of:

10. The method according to claim 9, wherein the step S2 specifically includes: in step S2, the driving motor is triggered to rotate to control the forward/reverse force action mechanism to move forward or reversely; the forward and reverse force action mechanism controls the certain horizontal included angle between the weight deviation and the other weight deviation through the interaction force with the first gear;

preferably, the process of rotating the driving motor includes: the winding coil and the magnetic component fixed on the end cover do relative motion to generate electric energy for the control circuit and the driving motor to use;