CN213949603U - Double-belt feeding metering device - Google Patents
Double-belt feeding metering device Download PDFInfo
- Publication number
- CN213949603U CN213949603U CN202021888824.4U CN202021888824U CN213949603U CN 213949603 U CN213949603 U CN 213949603U CN 202021888824 U CN202021888824 U CN 202021888824U CN 213949603 U CN213949603 U CN 213949603U
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- conveyor belt
- metering
- feeding
- belt
- weighing
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Abstract
The utility model belongs to measurement feedway, concretely relates to two belt feeding metering device. The method comprises the following steps: the device comprises a rack, a feeding conveyor belt, a metering conveyor belt, a feeding motor, a metering motor, a weighing sensor, a frequency converter, a contactor, a speed measuring device and a PLC (programmable logic controller); the utility model discloses divide into two conveyers to accomplish measurement and feed, the weighing device under the measurement conveyer belt feeds back the weighing signal to the PLC controller, takes the weighing signal as the reference, and the PLC controller exports frequency conversion command signal to the converter, and the feed conveyer belt passes through the converter control belt rotational speed, controls the feed volume to cancelled the measurement bearing roller, avoided the belt weigher to draw the bearing roller rotation dumb, the belt off tracking, to the influence that the measurement produced; the double belts feed and measure respectively, so that the measuring precision is improved, the maintenance of the equipment is reduced, and the working efficiency is improved.
Description
Technical Field
The utility model belongs to measurement feedway, concretely relates to two belt feeding metering device.
Background
The belt weigher is an automatic weighing apparatus which continuously weighs bulk materials on a conveying belt without subdividing the mass or interrupting the movement of the conveying belt, and is mainly classified according to a loader: a weigh table carrier, a conveyor carrier; sorting by belt speed: single speed belt weigher, variable speed belt weigher.
The traditional belt weighers are all devices integrating feeding and metering. The belt weigher has the defects that once the phenomena of poor bearing lubrication, uneven rollers in a metering area, deviation of a belt and the like exist in a metering roller of the belt weigher, the tare weight of the belt weigher can generate a large drift field, and the metering precision of the belt weigher is further influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the upper problem, the utility model provides a two belt feeding metering device, the utility model discloses a realize through following technical scheme:
a dual belt feed metering device, comprising: the device comprises a rack, a feeding conveyor belt, a metering conveyor belt, a feeding motor, a metering motor, a weighing sensor, a frequency converter, a contactor, a speed measuring device and a PLC (programmable logic controller);
the feeding conveyor belt is arranged on the rack, the metering conveyor belt is arranged below the feeding conveyor belt and is positioned at the discharge end of the feeding conveyor belt, namely the metering conveyor belt receives the conveying tail end of the feeding conveyor belt;
the metering conveyor belt comprises a conveyor belt body and a conveyor belt frame, three suspension points are arranged on the conveyor belt frame, and the suspension points are provided with the weighing sensors;
the metering conveyor belt is suspended to the frame by the weighing sensor;
the rotating shafts of the feeding motor and the metering motor are respectively connected with the driving wheels of the feeding conveyor belt and the metering conveyor belt;
the frequency converter is arranged on a power circuit of the feeding motor, and a signal input end of the frequency converter is connected with a frequency conversion signal output end of the PLC;
the number of the contactors is two, and the contactors are respectively arranged on power circuits of the metering motor and the feeding motor; the signal input end of the contactor is connected with the switch signal output end of the PLC;
a speed measuring and measuring device is arranged on a driven wheel of the metering conveyor belt; the signal input end of the speed measuring device is connected with the high-speed counting module of the PLC;
the device also comprises a weighing controller, wherein the weighing sensors are connected to the weighing controller; and the signal output end of the weighing controller is connected with the weighing signal input end of the PLC.
In summary, the following steps: and the frequency converter, the weighing controller, the speed measuring device and the contactor are in signal connection with the PLC.
Furthermore, a portal frame is arranged on the metering conveyor belt, the portal frame is arranged at one end of the conveyor belt frame, the number of suspension points is three, one suspension point is arranged in the middle of the portal frame, and the other two suspension points are arranged at the other end of the conveyor belt frame and are distributed on two sides of the conveyor belt body. The three suspension points form an isosceles triangle.
Furthermore, the speed measuring device is an annular incremental rotary encoder, and the awakening incremental rotary encoder is connected with a high-speed counting module of the PLC.
The utility model has the advantages that: the utility model discloses divide into two conveyers to accomplish measurement and feed, the weighing device under the measurement conveyer belt feeds back the weighing signal to the PLC controller, takes the weighing signal as the reference, and the PLC controller exports frequency conversion command signal to the converter, and the feed conveyer belt passes through the converter control belt rotational speed, controls the feed volume to cancelled the measurement bearing roller, avoided the belt weigher to draw the bearing roller rotation dumb, the belt off tracking, to the influence that the measurement produced; the double belts are used for feeding and metering respectively, so that the metering precision is improved, the maintenance of equipment is reduced, and the working efficiency is improved; the speed measuring device not only feeds back speed signals and is used for measuring and calculating the feeding amount together with weighing signals, but also feeds back the signals to the PLC controller when the conveyor belt stops due to faults such as slipping and the like, and the PLC controller sends switch signals to the contactor to close the metering motor and the feeding motor power supply, so that protection is provided for the device, error metering is prevented, and the metering accuracy of the whole metering system is influenced.
Drawings
FIG. 1 is a schematic perspective view of a mechanical apparatus according to an embodiment of the present invention;
FIG. 2 is a left side view of an embodiment of the present invention;
FIG. 3 is a front view of an embodiment of the mechanical apparatus of the present invention;
FIG. 4 is a schematic diagram of an embodiment of the control circuit of the present invention;
in the figure: the device comprises a machine frame 1, a feeding conveyor belt 2, a metering conveyor belt 3, a feeding motor 4, a metering motor 5, a weighing sensor 6, a frequency converter 7, a contactor 8, a speed measuring device 9, a PLC (programmable logic controller) 10 and a weighing controller 11.
Detailed Description
As shown in fig. 1-4: a dual belt feed metering device, comprising: the device comprises a rack 1, a feeding conveyor belt 2, a metering conveyor belt 3, a feeding motor 4, a metering motor 5, a weighing sensor 6, a frequency converter 7, a contactor 8, a speed measuring device 9 and a PLC (programmable logic controller) 10;
the feeding conveyor belt 2 is arranged on the rack 1, and the metering conveyor belt 3 is arranged below the feeding conveyor belt 2 and is positioned at the discharge end of the feeding conveyor belt 2, namely the metering conveyor belt 3 receives the conveying tail end of the feeding conveyor belt 2;
the metering conveyor belt 3 comprises a conveyor belt body and a conveyor belt frame, three suspension points are arranged on the conveyor belt frame, and weighing sensors 6 are arranged on the suspension points;
the metering conveyor belt 3 is suspended to the frame 1 by a weighing sensor 6;
the rotating shafts of the feeding motor 4 and the metering motor 5 are respectively connected with the driving wheels of the feeding conveyor belt 2 and the metering conveyor belt 3;
the frequency converter 7 is arranged on a power circuit of the feeding motor 4, and the signal input end of the frequency converter 7 is connected with the frequency conversion signal output end of the PLC 10;
the number of the contactors 8 is two, and the contactors are respectively arranged on power circuits of the metering motor 5 and the feeding motor 4; the signal input end of the contactor 8 is connected with the switching signal output end of the PLC 10;
a speed measuring and measuring device 9 is arranged on a driven wheel of the metering conveyor belt 3; the signal input end of the speed measuring device 9 is connected with a high-speed counting module of the PLC 10;
the device also comprises a weighing controller 11, and the weighing sensors 6 are connected to the weighing controller 11; and the signal output end of the weighing controller 11 is connected with the weighing signal input end of the PLC 10.
To sum up: the frequency converter 7, the weighing controller 11, the speed measuring device 9 and the contactor 8 are in signal connection with the PLC 10.
The metering conveyor belt 3 is provided with a portal frame, the portal frame is arranged at one end of the conveyor belt frame, the number of suspension points is three, one of the suspension points is arranged in the middle of the portal frame, and the other two suspension points are arranged at the other end of the conveyor belt frame and are distributed at two sides of the conveyor belt body. The three suspension points form an isosceles triangle.
The speed measuring device 9 is an annular incremental rotary encoder, and the incremental rotary encoder is awakened to be connected with a high-speed counting module of the PLC 10.
The utility model discloses a use does: the device is arranged below a discharge port of a raw material bin, and feeding quantity, variable frequency control, speed data and weighing data integral processing are arranged in a PLC (programmable logic controller) 10 in advance to calculate the feeding quantity; after the preparation is done, the device starts to operate, a weighing signal on the metering conveyor belt 3 and a speed measuring signal of the speed measuring device 9 are fed back to the PLC controller 10, if the feeding amount is larger than the set upper limit of the feeding amount, the PLC controller 10 sends a frequency reducing instruction to the frequency converter 7, the rotating speed of the feeding conveyor belt 2 is reduced, the feeding amount is reduced, if the feeding amount is smaller than the set lower limit of the feeding amount, the PLC controller 10 gives a frequency raising instruction to the frequency converter 7 in a floating mode, and the feeding amount of the feeding conveyor belt 2 is accelerated;
if the speed measuring device 9 monitors that the forwarding of the metering conveyor belt 3 is obviously reduced or equal to zero by a large margin, the PLC 10 refers to the signal and sends a cutting feeding motor 4 and a metering motor 5 to the contactor 8 for maintenance.
Claims (3)
1. A dual belt feed metering device, comprising: the device comprises a rack, a feeding conveyor belt, a metering conveyor belt, a feeding motor, a metering motor, a weighing sensor, a frequency converter, a contactor, a speed measuring device and a PLC (programmable logic controller);
the feeding conveyor belt is arranged on the rack, and the metering conveyor belt is arranged below the feeding conveyor belt and is positioned at the discharge end of the feeding conveyor belt;
the metering conveyor belt comprises a conveyor belt body and a conveyor belt frame, three suspension points are arranged on the conveyor belt frame, and the suspension points are provided with the weighing sensors;
the metering conveyor belt is suspended to the frame by the weighing sensor;
the rotating shafts of the feeding motor and the metering motor are respectively connected with the driving wheels of the feeding conveyor belt and the metering conveyor belt;
the frequency converter is arranged on a power circuit of the feeding motor;
the number of the contactors is two, and the contactors are respectively arranged on power circuits of the metering motor and the feeding motor;
a speed measuring device is arranged on a driven wheel of the metering conveyor belt;
the device also comprises a weighing controller, wherein the weighing sensors are connected to the weighing controller;
the frequency converter, the weighing controller, the speed measuring device and the contactor are all connected with the PLC.
2. The double-belt feeding metering device of claim 1, wherein a portal frame is arranged on the metering conveyor belt, the portal frame is arranged at one end of the conveyor belt frame, the number of the hanging points is three, one hanging point is arranged in the middle of the portal frame, and the other two hanging points are arranged at the other end of the conveyor belt frame and are distributed on two sides of the conveyor belt body.
3. The dual belt feed metering device of claim 1, wherein the speed measuring device is an annular incremental rotary encoder, and the annular incremental rotary encoder is connected to the high speed counting module of the PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021888824.4U CN213949603U (en) | 2020-09-02 | 2020-09-02 | Double-belt feeding metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021888824.4U CN213949603U (en) | 2020-09-02 | 2020-09-02 | Double-belt feeding metering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213949603U true CN213949603U (en) | 2021-08-13 |
Family
ID=77192975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021888824.4U Expired - Fee Related CN213949603U (en) | 2020-09-02 | 2020-09-02 | Double-belt feeding metering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213949603U (en) |
-
2020
- 2020-09-02 CN CN202021888824.4U patent/CN213949603U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210813 Termination date: 20210902 |
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| CF01 | Termination of patent right due to non-payment of annual fee |