CN212558468U

CN212558468U - Vibrating decrement balance

Info

Publication number: CN212558468U
Application number: CN202020708096.8U
Authority: CN
Inventors: 魏先海; 魏会; 胡飞; 魏贤之; 魏贤宽
Original assignee: Hubei Xinmei Intelligent Equipment Co ltd
Current assignee: Hubei Xinmei Intelligent Equipment Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-02-19
Anticipated expiration: 2030-04-30

Abstract

The utility model relates to a vibration type weight-reducing scale, which comprises a weighing hopper and a vibration feeding unit; a gravity sensor is arranged on the weighing hopper; the vibration feeding unit comprises a machine body, a second motor, a feeding groove body, a vibration exciter, a plurality of springs and a fixed seat; the second motor is connected with the vibration exciter belt; the machine body is connected with the fixed seat through a spring; the vibration exciter is arranged on the machine body. The utility model has simple structure, safe and reliable operation and wide application range, can uniformly, continuously or quantitatively feed granular, powder and massive materials into the receiving equipment from the weighing hopper, obviously improves the production efficiency and prolongs the service life of the equipment, and is suitable for continuously batching small granules, powder or massive materials and continuously batching various bulk or liquid materials; the weighing accuracy and the control precision are improved; the exciting force can be adjusted, the material flow can be changed and controlled at any time, and continuous, uniform and easily-controlled feeding is realized.

Description

Vibrating decrement balance

Technical Field

The utility model belongs to the technical field of decrement balance, concretely relates to vibrating decrement balance.

Background

The decrement scale is a weighing and metering device of batching class, and controls the rotating speed of the discharging screw machine according to the reduction rate of the weight of the material in the weighing hopper so as to achieve the purpose of quantitative feeding, namely, the reduction rate of the material in the weighing hopper is utilized to calculate the flow and the accumulated amount so as to realize metering and batching control.

The existing decrement scale uses a discharge screw machine for feeding, has small application range, is only suitable for continuously batching small-flow particles or powder materials such as cement, coal powder, carbon powder, fly ash, mineral powder and the like and continuously batching various bulk or liquid materials, but is not suitable for continuously batching massive materials, so that the application occasion of the decrement scale is limited.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem who exists among the prior art, provide a vibrating decrement balance, it is little to solve current decrement balance application scope, is not suitable for massive material batching in succession, and then makes the application occasion of decrement balance receive the restriction scheduling problem.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

a vibration type weight reduction scale comprises a weighing hopper, wherein a gravity sensor is arranged on the weighing hopper, and the vibration type weight reduction scale also comprises a vibration feeding unit arranged below the weighing hopper; the vibration feeding unit comprises a machine body, a second motor, a feeding groove body, a vibration exciter, a plurality of springs and a fixed seat; the second motor is connected with the vibration exciter belt; the machine body is connected with the fixed seat through a spring; the vibration exciter is installed on the machine body.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Further, the machine body adopts a closed structure.

Further, the feeding trough body is arranged by inclining 0-15 degrees downwards.

Further, a scale frame is arranged outside the weighing hopper.

Further, the vibratory weight loss scale further comprises a feeding unit arranged above the weighing hopper; the feeding unit is in flexible connection with the weighing hopper.

Further, the feeding unit comprises an electric valve and a first motor for controlling the opening and closing of the electric valve.

Further, the electric valve is an electric butterfly valve.

Further, the vibration type decrement scale also comprises a control unit which is used for receiving and processing the weight signal sent by the gravity sensor and respectively sending a feeding signal and a PID control signal to the first motor and the second motor.

Further, the second motor is a variable frequency speed regulating motor.

Further, the control unit comprises a PLC instrument and a frequency converter.

The utility model has the advantages that: the utility model discloses simple structure, precision are more accurate, operation safe and reliable, application scope is wide, can follow graininess, powder and bold material evenly in the weighing hopper, in succession or quantitatively give the receiving equipment, effectively prevent the phenomenon that the receiving equipment from taking place the dead halt because of the feed inequality, show improvement production efficiency and extension equipment's life, be applicable to the continuous batching of tiny particle or powder or bold material such as cement, buggy, carbon dust, fly ash, powdered ore and various scattered form or liquid and batching, the industry such as the wide application in mine, metallurgy, ore dressing, chemical industry, building materials, abrasive material; the weighing accuracy and the control precision are further improved; the exciting force can be adjusted, the material flow can be changed and controlled at any time, continuous, uniform and easily-controlled feeding is realized, and the operation is safe and reliable.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the vibratory feeding unit according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. weighing hopper, 2, gravity sensor, 3, feeding unit, 31, motorised valve, 4, first motor, 5, the control unit, 6, vibration feed unit, 61, fuselage, 62, second motor, 63, feed cell body, 64, vibration exciter, 65, spring, 66, fixing base.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1 and 2, the vibration type weight reduction scale of the present embodiment includes a weighing hopper 1 and a vibration feeding unit 6 disposed below the weighing hopper 1; a gravity sensor 2 is arranged on the weighing hopper 1; the vibration feeding unit 6 comprises a machine body 61, a second motor 62, a feeding trough 63, a vibration exciter 64, a plurality of springs 65 and a fixed seat 66; the second motor 62 is connected with the vibration exciter 64; one end of the spring 65 is connected with the bottom of the body 61, and the other end of the spring 65 is connected with the top of the fixed seat 66, namely, the body 61 is connected with the fixed seat 66 through the spring 65; the exciter 64 is mounted on the body 61.

Preferably, the machine body 61 adopts a closed structure to ensure accuracy of precision, avoid the materials in the feeding trough body 63 are thrown out, and meanwhile, dust pollution is effectively prevented, vibration is stable, work is reliable, and service life is long.

Preferably, the second motor 62 and the exciter 64 are connected by a vee belt. The triangle has two kinds of special belt core structure and rope core structure, which are respectively composed of wrapping cloth, top rubber, tensile body and bottom rubber. The V-belt is preferably of a special belt core structure, has good toughness, high strength and convenient use and maintenance, and is suitable for occasions with large center distance between two shafts and high rotating speed.

This embodiment the quantity of second motor 62 is two, vibratory feeding unit 6 promotes through periodic vibration material in the feed cell body 63 is thrown or sliding motion to accomplish the at the uniform velocity feed operation of material, so that follow graininess, powder and massive material evenly in weighing hopper 1, in giving the material receiving equipment in succession or quantitatively, effectively prevent the material receiving equipment because of the uneven phenomenon that takes place the crash of feed, show the life who improves production efficiency and extension equipment, be applicable to in automatic blending, ration packing and the automatic control operation.

The vibration source of the vibratory feeding unit 6 in this embodiment is an exciter 64. Preferably, the vibration exciter 64 comprises two eccentric shafts (a driving shaft and a driven shaft) and a gear pair, the driving shaft is driven by the second motor 62 through a triangular belt, the gear on the driving shaft is meshed with the driven shaft to rotate, and the driving shaft and the driven shaft rotate in opposite directions simultaneously, so that the feeding trough body 63 vibrates, materials flow continuously and continuously, the purpose of continuously and uniformly conveying the materials is achieved, and safe and reliable operation is guaranteed.

Preferably, the feeding trough 63 is installed with a downward inclination of 0-15 degrees, for example, in order to ensure uniform and stable feeding and prevent the material in the feeding trough 63 from automatically flowing and horizontally installing, if general material continuous feeding is performed, the feeding trough can be installed with a downward inclination of 10 degrees, and if the material viscosity and the water content are large, the feeding trough can be installed with a downward inclination of 15 degrees.

Preferably, a scale frame (not shown) is arranged outside the weighing hopper 1.

As shown in fig. 1, the vibratory weight-reducing scale further comprises a feeding unit 3 arranged above the weighing hopper 1; the feeding unit 3 is in flexible connection with the weighing hopper 1; the feeding unit 3 comprises an electric valve 31 and a first motor 4 for controlling the electric valve 31 to open and close, so that the on-off between the feeding unit 3 and the weighing hopper 1 is controlled, and the charging control of the weighing hopper 1 is realized.

Preferably, the electric valve 31 is an electric butterfly valve to improve the accuracy of weighing and the precision of control. The electric butterfly valve has the advantages of small structural length and overall height, small volume, light weight, high opening and closing speed, good fluid control characteristic, small fluid resistance and most suitable structural principle for manufacturing large-caliber valves; under the working conditions of high temperature and high pressure, the sealing performance is still stable and is not influenced by temperature change; the phenomenon of phase locking does not exist between the butterfly plate and the sealing ring; the adjusting performance is good.

As shown in fig. 1, the vibratory decrement scale further comprises a control unit 5 for receiving and processing the weight signal from the gravity sensor 2 and sending a feed signal and a PID control signal to the first motor 4 and the second motor 62, respectively.

Preferably, the second motor 62 is a variable frequency speed regulating motor, and can realize different rotating speeds and torques under the driving of a frequency converter so as to adapt to the requirement change of a load, and the feeding speed is controlled by regulating the frequency without frequently starting the second motor 62; the control unit 5 comprises a PLC instrument and a frequency converter (both of which are conventional technologies and are not described in detail herein), the PLC instrument receives and processes the weight signal sent by the gravity sensor 2, and sends a feeding signal and a control signal to the first motor 4 and the frequency converter, respectively, and then controls the rotation speed of the variable-frequency adjustable-speed motor through the frequency converter, so as to adjust the exciting force, change and control the flow at any time, and adjust conveniently and stably, thereby realizing continuous, uniform and easily controlled feeding, and the material flow rate can be adjusted as required, and the operation is safe and reliable without material flushing phenomenon.

The working principle of the vibration type decrement scale is as follows: when the material in the weighing hopper 1 reaches the lower limit position of weighing, the converter control the variable frequency speed control motor is according to the fixed flow of current rotational speed, simultaneously, first motor 4 control electric butterfly valve is opened, the weighing hopper 1 begins to load fast when reaching its upper limit position of weighing, first motor 4 control electric butterfly valve closes, the hopper 1 that weighs stops to load, according to the speed of losing weight of the material in the weighing hopper 1 adjusts the rotational speed of variable frequency speed control motor, and promotes through periodic vibration the material in the feed cell body 63 does throwing or gliding motion, realizes continuous, even, easily controlled feed, and operation safe and reliable is showing the increase the application scope of vibrating decrement balance, improves the degree of accuracy and the precision of control of weighing.

The vibration type decrement scale has the advantages of simple structure, more accurate precision, safe and reliable operation and wide application range, can uniformly, continuously or quantitatively feed granular, powder and massive materials into a receiving device from the weighing hopper 1, can continuously and stably discharge various materials without blocking the materials, effectively prevents the receiving device from crashing due to uneven feeding, obviously improves the production efficiency and prolongs the service life of the device, is suitable for continuous batching of small granules or powder or massive materials such as cement, coal powder, carbon powder, fly ash, mineral powder and the like and various continuous batching of scattered or liquid materials, and is widely applied to industries such as mines, metallurgy, mineral dressing, chemical industry, building materials, abrasive materials and the like; the weighing accuracy and the control precision are further improved; the exciting force can be adjusted, the material flow can be changed and controlled at any time, continuous, uniform and easily-controlled feeding is realized, and the operation is safe and reliable.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A vibration type weight-reducing scale comprises a weighing hopper (1), wherein a gravity sensor (2) is arranged on the weighing hopper (1), and is characterized by further comprising a vibration feeding unit (6) arranged below the weighing hopper (1); the vibration feeding unit (6) comprises a machine body (61), a second motor (62), a feeding trough body (63), a vibration exciter (64), a plurality of springs (65) and a fixed seat (66); the second motor (62) is connected with the vibration exciter (64); the machine body (61) is connected with the fixed seat (66) through a spring (65); the vibration exciter (64) is mounted on the machine body (61).

2. A vibratory weight reduction scale according to claim 1, wherein said body (61) is of enclosed construction.

3. A vibratory weight scale as set forth in claim 1 wherein said feed chute (63) is declined 0-15 °.

4. A vibratory weight reduction scale according to claim 1, wherein said weighing hopper (1) is externally provided with a scale frame.

5. A vibratory weight reduction scale according to claim 1, further comprising a feed unit (3) disposed above said weighing hopper (1); the feeding unit (3) is in flexible connection with the weighing hopper (1).

6. A vibratory weight reduction scale according to claim 5, wherein said feed unit (3) comprises an electrically operated valve (31), a first motor (4) for controlling the opening and closing of said electrically operated valve (31).

7. A vibratory weight scale according to claim 6, wherein said electrically operated valve (31) is an electrically operated butterfly valve.

8. A vibratory weight reduction scale according to claim 6, further comprising a control unit (5) for receiving and processing weight signals emitted by said gravity sensor (2) and emitting feed signals and PID control signals to said first motor (4) and second motor (62), respectively.

9. A vibratory weight reduction scale according to claim 8, wherein said second motor (62) is a variable frequency adjustable speed motor.

10. A vibratory weight reduction scale according to claim 8, wherein said control unit (5) includes a PLC meter and a frequency converter.