CN216174170U

CN216174170U - Vibration amplitude stabilizing device of vibrating screen

Info

Publication number: CN216174170U
Application number: CN202122067385.1U
Authority: CN
Inventors: 李齐文; 李金凤; 王全; 邓辉辉
Original assignee: Guangxi Meista Engineering Machinery Equipment Co ltd
Current assignee: Guangxi Meista Engineering Machinery Equipment Co ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-04-05
Anticipated expiration: 2031-08-30

Abstract

The utility model discloses an amplitude stabilizing device of a vibrating screen, which comprises a vibrating screen body, a vibrating motor, a damping component, a vibration detection sensor, a frequency converter and a controller, wherein the vibrating motor is arranged on the side walls of the two sides of the middle part of the vibrating screen body, the damping component is respectively arranged at the lower end of the side wall of the vibrating screen body on the feeding side and the lower end of the side wall of the vibrating screen body on the discharging side, the vibration detection sensor is arranged on the shell of the vibrating motor on the output side, the vibration detection sensor is connected with the controller, the controller is connected with the frequency converter, and the frequency converter is electrically connected with the vibrating motor. The vibrating screen body can be used for vibrating and screening materials under stable inherent amplitude and inherent frequency, and the screening efficiency of the crushing and screening equipment is improved by controlling the vibration amplitude of the vibrating screening equipment.

Description

Vibration amplitude stabilizing device of vibrating screen

Technical Field

The utility model belongs to the technical field of crushing and vibrating screening equipment, and particularly relates to an amplitude stabilizing device of a vibrating screen.

Background

The vibrating screen device is widely applied to screening operation of production lines of powder, mineral aggregate, aggregate and the like in industries such as mining, quarrying, metallurgy, chemical engineering, casting, building materials, traffic construction and the like, a vibrating screen motor in the vibrating screen device rotates to generate large exciting force, the motor can drive the material to move through a screen surface by using the large exciting force, the material is screened on the vibrating screen, the mining screening device is in the working process, due to continuous filling of stone, the working load is constantly changed, so that the amplitude is unstable, under a large load, the amplitude of the vibrating screen is reduced, the vibration frequency of the vibrating motor is always fixed and unchanged, the stable control on the vibration amplitude of the vibrating screen cannot be realized according to the actual working condition, so that the screening efficiency is reduced, and the use of the device is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an amplitude stabilizing device of a vibrating screen, which can enable a vibrating screen body to carry out vibrating screening on materials under stable natural amplitude and natural frequency and improve the screening efficiency of crushing and screening equipment by controlling the vibration amplitude of vibrating screening equipment. In order to achieve the purpose, the utility model adopts the following technical scheme:

according to one aspect of the utility model, a vibration amplitude stabilizing device of a vibrating screen is provided, which comprises a vibrating screen body, a vibrating motor, a damping assembly, a vibration detection sensor, a frequency converter and a controller, the side walls at the two sides of the middle part of the vibrating screen body are respectively provided with the vibrating motors, the output shafts of the vibrating motors at the two sides of the middle part of the vibrating screen body are in transmission connection through universal couplings, the lower end of the side wall at the feeding side and the lower end of the side wall at the discharging side of the vibrating screen body are respectively provided with the damping component, the vibration detection sensor is arranged on the shell at the output side of the vibration motor, the acquisition output end of the vibration detection sensor is connected with the acquisition input end of the controller, the frequency conversion control output end of the controller is connected with the frequency conversion control input end of the frequency converter, and the frequency conversion output end of the frequency converter is electrically connected with the vibration motor.

According to the scheme, the vibration detection sensor is further preferably provided with a signal conditioning module between the acquisition output end of the vibration detection sensor and the acquisition input end of the controller, and the acquisition output end of the vibration detection sensor is connected with the acquisition input end of the controller through the signal conditioning module.

The vibration detection sensor is a displacement sensor or an acceleration sensor, the vibration detection sensor can also adopt a laser ranging sensor, an ultrasonic ranging sensor or a mechanical ejector pin type sensor to detect the amplitude generated when the vibrating screen body vibrates, and the controller is a PLC (programmable logic controller) or a single chip microcomputer controller.

The technical scheme is further preferred, the vibrating screen body is internally provided with supporting rods which are parallel to the universal couplings and are positioned on the front side and the rear side of the universal couplings, and the two ends of each supporting rod are fixed on the inner side walls of the two sides in the vibrating screen body respectively.

The scheme is further preferred, the damping assembly comprises a base, a lower supporting plate, an upper supporting plate and a damping spring group, the lower supporting plate is arranged above the base, bent parts which are bent downwards are arranged at two ends of the lower supporting plate, the two ends of the lower supporting plate are respectively connected to two ends of the base through the bent parts, the upper supporting plate is arranged above the lower supporting plate, the lower end of the damping spring group is fixed to the upper surface of the lower supporting plate, the upper end of the damping spring group is fixed to the lower surface of the upper supporting plate, groove-shaped back plates are arranged at two ends of the upper supporting plate, and the back of the groove-shaped back plate is fixed to the outer side wall of the vibrating screen body through bolts.

Above-mentioned scheme is further preferred be provided with the polylith between lower backup pad and the base along vertical direction interval and strengthen the backup pad, the lower surface at the lower backup pad is fixed to the upper end of every enhancement backup pad, and the lower surface at the base is fixed to the lower extreme of every enhancement backup pad, is provided with first fixed orifices on the base of strengthening the backup pad both sides respectively.

In a further preferable mode of the above aspect, a reinforcing support rib is provided in the center of the groove-shaped back plate and in the vertical direction, and second fixing holes are provided in the grooves of the groove-shaped back plate on both sides of the reinforcing support rib.

Above-mentioned scheme is further preferred, be the setting of level parallel state between bottom suspension fagging and the last backup pad, and be connected with arc rubber slab respectively between the both ends of bottom suspension fagging.

In a further preferred embodiment of the above aspect, the center of the lower support plate and the center of the upper support plate are arc-shaped parallel plates bent downward.

In summary, due to the adoption of the technical scheme, the utility model has the following technical effects:

(1) the utility model provides an amplitude stabilising arrangement enables the shale shaker body and carries out vibratory screening under stable natural amplitude and natural frequency, and through the vibration range of control vibratory screening equipment, improves the screening efficiency of broken screening equipment to further improve material screening quality, reduce use cost and later maintenance cost, and need not do excessive change to vibratory screening's mechanical structure, just can make its job stabilization reliable, improved whole work efficiency.

(2) The utility model provides a sensor can real-time detection shale shaker body vibration acceleration or displacement data, and send the vibration data that detect into signal conditioning module and alternate the stable voltage signal of output, transmit the controller at last and carry out analysis processes, whether the controller judges the shale shaker body too big according to the data of handling, in case confirm that the vibration range is too big then output regulation and control signal to converter make its output frequency conversion signal carry out frequency conversion control to vibrating motor, thereby can be according to sending into this internal material bearing of shale shaker and change and acquire shale shaker body amplitude change in real time, so that can carry out automatically regulated control to the amplitude of shale shaker body, the effectual useless work that has reduced, the waste of screening in-process energy has been avoided.

Drawings

FIG. 1 is a schematic illustration of vibration detection of a shaker amplitude stabilization apparatus of the present invention;

fig. 2 is a schematic view of the installation of the vibration motor of the present invention;

FIG. 3 is a schematic structural view of the shock absorbing assembly of the present invention;

FIG. 4 is a circuit schematic of the signal conditioning module of the present invention;

in the drawing, the vibrating screen comprises a vibrating screen body 1, a vibrating motor 2, a damping component 3, a vibration detection sensor 4, a frequency converter 5, a controller 6, a signal conditioning module 7, a support rod 21, a base 30, a lower support plate 31, an upper support plate 32, a damping spring group 33, a bending part 31a, a reinforcing support plate 31b, a first fixing hole 31c, a groove-shaped back plate 34, a reinforcing support rib 35, a second fixing hole 36 and an arc-shaped rubber plate 37.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings by way of examples of preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.

As shown in fig. 1 and fig. 2, the vibration amplitude stabilizing device for the vibrating screen according to the present invention comprises a vibrating screen body 1, a vibrating motor 2, a damping component 3, a vibration detection sensor 4, a frequency converter 5 and a controller 6, wherein the vibrating motor 2 is respectively arranged on the side walls of the two sides of the middle of the vibrating screen body 1, the side walls of the vibrating screen body 1 on the left and right sides of the motor 2 are provided with a handle or a hook 10 for carrying the vibrating screen body 1 during installation, disassembly or transportation or fixing the vibrating screen body 1 thereon, the output shafts of the vibrating motor 2 on the two sides of the middle of the vibrating screen body 1 are in transmission connection through a universal coupling 20, the damping component 3 is respectively arranged at the lower end of the side wall on the feeding side and the lower end of the side wall on the discharging side of the vibrating screen body 1, the vibration detection sensor 4 is arranged on the casing on the output side of the vibrating motor 2, the acquisition output end of the vibration detection sensor 4 is connected with the acquisition input end of the controller 6, the frequency conversion control output end of the controller 6 is connected with the frequency conversion control input end of the frequency converter 5, and the frequency conversion output end of the frequency converter 5 is electrically connected with the vibration motor 2; the vibration detection device is characterized in that a signal conditioning module 7 is further arranged between the acquisition output end of the vibration detection sensor 4 and the acquisition input end of the controller 6, the acquisition output end of the vibration detection sensor 4 is connected with the acquisition input end of the controller 6 through the signal conditioning module 7, the vibration detection sensor 4 is a displacement sensor or an acceleration sensor, preferably an acceleration sensor, and the controller is a PLC (programmable logic controller) or a single chip microcomputer controller. In the utility model, the vibrating screen body 1 is fixed on a crushing and screening platform through a damping component 3, a vibration detection sensor 4 is arranged on the vibrating screen body 1, the frequency converter 5 and the vibration detection sensor 4 are connected with a controller 6, so as to form a set of closed loop feedback control system, the vibration detection sensor 4 detects the vibration acceleration motion state of the vibrating screen body 1 in real time, the vibration detection sensor 4 converts the detected acceleration signal through a signal conditioning module 7, the signal conditioning module 7 outputs a 0-5V voltage signal to the controller 6 for processing, so as to obtain the vibration acceleration voltage value of the vibrating screen body 1, the controller 6 outputs the acceleration voltage value to the frequency converter 5 to change the rotating speed of the vibrating motor 2 in real time, the rotating speed value (amplitude adjusting signal of the vibrating screen body 1) output by the frequency converter 5 is adjusted to the vibrating motor 2 to adjust the rotating speed thereof, the vibration motor 2 is enabled to adjust the amplitude of the vibrating screen body 1 in the vibrating process.

In the utility model, as shown in fig. 1 and 2, support rods 21 parallel to the universal coupling 20 are respectively arranged in the vibrating screen body 1 and at the front side and the rear side of the universal coupling, and two ends of each support rod are respectively fixed on the inner side walls at two sides in the vibrating screen body 1, so that the inner walls at two sides of the vibrating screen body 1 are more stable under the supporting action of the support rods 21, and the vibrating motors 2 at two ends of the universal coupling 20 are prevented from deforming in the rotating operation and driving the vibrating screen body 1 to perform screening swing.

In the present invention, as shown in fig. 1 and 3, the damper assembly 3 includes a base 30, a lower support plate 31, an upper support plate 32 and a damper spring group 33, the lower support plate 31 is disposed above the base 30, two ends of the lower support plate 31 have bent portions 31a bent downward, two ends of the lower support plate 31 are respectively connected to two ends of the base 30 through the bent portions 31a, the upper support plate 32 is disposed above the lower support plate 31, a lower end of the damper spring group 33 is fixed to an upper surface of the lower support plate 31, an upper end of the damper spring group 33 is fixed to a lower surface of the upper support plate 32, two ends of the upper support plate 32 are provided with groove-shaped back plates 34, a back portion of the groove-shaped back plate 34 is fixed to an outer sidewall of the vibrating screen body 1 through bolts, a plurality of reinforcing support plates 31b are disposed between the lower support plate 31 and the base 30 at intervals in a vertical direction, the upper end of each reinforcing support plate 31b is fixed on the lower surface of the lower support plate 31, the lower end of each reinforcing support plate 31b is fixed on the lower surface of the base 30, the base 30 on the two sides of the reinforcing support plate 31b is respectively provided with a first fixing hole 31c, and the reinforcing support plate 31b plays a role in reinforcing the base 30 and the lower support plate 31, so that the reinforcing support plate is not easy to deform in the vibration process.

In the present invention, as shown in fig. 1, 2 and 3, a reinforcing support rib 35 is provided in the center of the groove-shaped back plate 34 and along the vertical direction, and second fixing holes 36 are provided in the grooves of the groove-shaped back plate 34 on both sides of the reinforcing support rib 35; the vibrating screen body 1 is fixed on a crushing and screening platform through a base 30, first fixing holes 31c in the base 30 are fixed on the crushing and screening platform through bolts, after the base 30 is fixed on the crushing and screening platform, bent parts 31a at two ends of a lower supporting plate 31 and a block reinforcing supporting plate 31b are fixed on the base 30 in a welding mode, so that the lower supporting plate 31 and the base 30 form a fixed whole, the lower end of a damping spring group 33 is fixed on the lower supporting plate 31 and an upper supporting plate 32 is fixed on the upper end of the damping spring group 33 in sequence, at the moment, the lower supporting plate 31 is fixed on the outer side wall of the vibrating screen body 1 through a groove-shaped back plate 34, and second fixing holes 36 in the groove-shaped back plate 34 are fixed on the outer side wall of the vibrating screen body 1 through bolts, so that the damping assemblies 3 are installed; the lower support plate 31 and the upper support plate 32 are horizontally arranged in parallel, so that the center of the lower support plate 31 and the center of the upper support plate 32 are arc-shaped parallel panels bent downwards, and the lower support plate 31 and the upper support plate 32 play a role in buffering in the vibration process of the damping spring set 33; and arc-shaped rubber plates 37 are respectively connected between the two ends of the lower support plate 31; when vibrating motor 1 starts and drive shale shaker body 1 and vibrate, damping spring group 33 is compressed, damping spring group 33 drives shale shaker body 1 through last backup pad 32 and flute profile backplate 34 when compressed, makes shale shaker body 1 vibration about, from top to bottom or front and back, arc rubber slab 37 pulls each other between backup pad 31 and flute profile backplate 34 down, has played soft spacing and cushioning effect, and arc rubber slab 37 makes whole damping spring group 33 spacing at the vibration in-process, and does not let damping spring group 33 compression or excessive extension, makes shale shaker body 1 more stable at the vibration in-process.

In the present invention, as shown in fig. 4, the signal conditioning module 7 is a current-voltage conversion circuit formed by an existing operational amplifier, a current signal end of the collected output of the vibration detection sensor 4 is adjusted and input to the controller 6 through the current-voltage conversion circuit, the current-voltage conversion circuit is used for converting the current signal output by the vibration detection sensor 4 into a voltage signal, the current-voltage conversion circuit includes an operational amplifier U1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6 and a capacitor C1, the output end of the vibration detection sensor 4 is respectively connected to one end of a resistor R2, one end of a resistor R3 and one end of a capacitor C1 through a resistor R1, the other end of a resistor R3 is connected to an anode of an operational amplifier U1, the output end of an operational amplifier U1 is respectively connected to one end of a resistor R5 and one end of a resistor R6, the other end of the resistor R5 is respectively connected with the negative input end of the operational amplifier U1 and one end of the resistor R4, the other end of the resistor R4, the other end of the resistor R2 and the other end of the capacitor C1 are connected with the ground, the other end of the resistor R6 is connected with the acquisition input end of the controller 6, a current signal output by the vibration detection sensor 4 is subjected to voltage division, current limitation and filtering through the resistor R1, the resistor R2 and the capacitor C1, then is sent to the positive electrode of the operational amplifier U1 through the resistor R3 to be amplified and outputs 0-5V voltage, and the 0-5V voltage converted and output by the resistor R1 is sent to the controller 6 to be processed. Therefore, the amplitude signal generated when the vibration detection sensor 4 collects the vibration of the vibrating screen body 1 can be obtained, and the amplitude signal is in direct proportion to the voltage output by the signal conditioning module 7.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.

Claims

1. The utility model provides a shale shaker amplitude stabilising arrangement which characterized in that: the vibration amplitude stabilizing device comprises a vibrating screen body, a vibrating motor, a damping component, a vibration detection sensor, a frequency converter and a controller, wherein the vibrating motor is arranged on the side walls of the two sides of the middle part of the vibrating screen body respectively, the output shafts of the vibrating motors on the two sides of the middle part of the vibrating screen body are connected through a universal coupling in a transmission mode, the lower end of the side wall of the feeding side of the vibrating screen body and the lower end of the side wall of the discharging side of the vibrating screen body are respectively provided with the damping component, the shell of the output side of the vibrating motor is provided with the vibration detection sensor, the acquisition output end of the vibration detection sensor is connected with the acquisition input end of the controller, the frequency conversion control output end of the controller is connected with the frequency conversion control input end of the frequency converter, and the frequency conversion output end of the frequency converter is electrically connected with the vibrating motor.

2. A shaker amplitude stabilizer as defined in claim 1, further comprising: the vibration detection device comprises a vibration detection sensor, a controller and a signal conditioning module, wherein the signal conditioning module is arranged between the acquisition output end of the vibration detection sensor and the acquisition input end of the controller, and the acquisition output end of the vibration detection sensor is connected with the acquisition input end of the controller through the signal conditioning module.

3. A shaker amplitude stabilizer as defined in claim 1, further comprising: the vibration detection sensor is a displacement sensor or an acceleration sensor, and the controller is a PLC (programmable logic controller) or a single chip microcomputer controller.

4. A shaker amplitude stabilizer as defined in claim 1, further comprising: the vibrating screen is characterized in that supporting rods parallel to the universal couplings are arranged in the vibrating screen body and located on the front side and the rear side of the universal couplings respectively, and two ends of each supporting rod are fixed on the inner side walls of the two sides in the vibrating screen body respectively.

5. A shaker amplitude stabilizer as defined in claim 1, further comprising: the damping assembly comprises a base, a lower supporting plate, an upper supporting plate and a damping spring group, the lower supporting plate is arranged above the base, two ends of the lower supporting plate are provided with bending parts which are bent downwards, two ends of the lower supporting plate are respectively connected to two ends of the base through the bending parts, the upper supporting plate is arranged above the lower supporting plate, the lower end of the damping spring group is fixed to the upper surface of the lower supporting plate, the upper end of the damping spring group is fixed to the lower surface of the upper supporting plate, two ends of the upper supporting plate are provided with groove-shaped back plates, and the back of the groove-shaped back plates is fixed to the outer side wall of the vibrating screen body through bolts.

6. A shaker amplitude stabilizer as defined in claim 5, further comprising: the supporting device comprises a base, a lower supporting plate and a plurality of reinforcing supporting plates, wherein the reinforcing supporting plates are arranged between the lower supporting plate and the base at intervals along the vertical direction, the upper end of each reinforcing supporting plate is fixed on the lower surface of the lower supporting plate, the lower end of each reinforcing supporting plate is fixed on the lower surface of the base, and first fixing holes are formed in the bases on two sides of each reinforcing supporting plate respectively.

7. A shaker amplitude stabilizer as defined in claim 5, further comprising: and a reinforcing support rib is arranged in the center of the groove-shaped back plate and along the vertical direction, and second fixing holes are arranged in the grooves of the groove-shaped back plate on the two sides of the reinforcing support rib.

8. A shaker amplitude stabilizer as defined in claim 5, further comprising: be horizontal parallel state setting between bottom suspension fagging and the last backup pad, and be connected with the arc rubber slab respectively between the both ends of bottom suspension fagging.

9. A shaker amplitude stabilizer as defined in claim 8, further comprising: the center of the lower supporting plate and the center of the upper supporting plate are arc-shaped parallel panels bent downwards.