CN112405871A

CN112405871A - High-precision discharging control system for proportioning machine

Info

Publication number: CN112405871A
Application number: CN202011150600.8A
Authority: CN
Inventors: 王鹏; 朱利锋; 王振松
Original assignee: Zhengzhou Lifan Machinery Manufacturing Co ltd
Current assignee: Zhengzhou Lifan Machinery Manufacturing Co ltd
Priority date: 2020-10-24
Filing date: 2020-10-24
Publication date: 2021-02-26

Abstract

The application relates to the field of concrete production, in particular to a high-precision discharging control system for a batching machine, which comprises a frame, wherein the frame is provided with a material storage device, a material distribution device and a conveying device for delivering the distributed materials, the material storage device comprises a plurality of raw material bins and a feeding device used for sending out materials discharged by the raw material bins, the material distributing device comprises a material receiving barrel and at least two shunt tubes, the quantity of the batching devices is at least two, the batching devices comprise a plurality of weighing hoppers and buffer hoppers corresponding to the weighing hoppers, the buffer hopper is provided with a second opening and a second discharge pipeline, the second discharge pipeline is provided with a first control device for controlling the on-off of the second discharge pipeline, and the weighing hopper is provided with a third opening and a third discharge pipeline. This application has the effect that increases production efficiency.

Description

High-precision discharging control system for proportioning machine

Technical Field

The application relates to the field of concrete production, especially, relate to a high accuracy ejection of compact control system for proportioning machine.

Background

The common concrete is artificial stone which is prepared by taking cement, water, sand and stones as raw materials, mixing the raw materials according to a proper proportion, uniformly stirring, densely forming, curing and hardening. When the concrete is produced, various raw materials need to be sent into a mixing station to be mixed, and the raw materials need to be mixed by a mixing weighing machine before being mixed.

For example, the concrete batching machine disclosed in chinese patent publication No. CN105365051A includes a bracket, a stone hopper, a sand hopper and a storage hopper, wherein the stone hopper and the sand hopper are installed above the bracket; the bottoms of the stone hopper and the sand hopper are respectively provided with a conveying device, and one end of the conveying device is provided with a weighing device; the storage hopper is positioned below the weighing device.

For the related technologies, the inventor thinks that there is a defect that the next batching can be continued after the batching is performed each time and the materials in the storage hopper are completely discharged, so that the material proportioning time is increased, and the production efficiency is not high.

Disclosure of Invention

In order to increase the efficiency of production, the application provides a high accuracy ejection of compact control system for proportioning machine.

The application provides a pair of high accuracy ejection of compact control system for proportioning machine adopts following technical scheme:

a high-precision discharging control system for a proportioning machine comprises a rack, wherein a material storage device, a material distribution device, a proportioning device and a conveying device for conveying the proportioned materials are arranged on the rack, the material storage device comprises a plurality of raw material bins and a feeding device for conveying the materials discharged from the raw material bins, the material distribution device comprises a material receiving barrel and at least two shunting pipes, the number of the shunting pipes is at least two, the number of the proportioning device is at least two, the proportioning device comprises a plurality of weighing hoppers and buffer hoppers corresponding to the weighing hoppers, an opening II and a discharging pipeline II are arranged on the buffer hoppers, a control device I for controlling the on-off of the discharging pipeline II is arranged on the discharging pipeline II, the weighing hoppers are provided with an opening III and a discharging pipeline III, and weighing units are arranged on the weighing hoppers, the discharging pipeline III is provided with a control device II for controlling the on-off of the discharging pipeline III, the batching device is further provided with a control unit for controlling the control device I and the control device II, and the weighing unit is electrically connected with the control unit.

Through adopting above-mentioned technical scheme, material feeding unit sends into the raw materials in the former feed bin to connecing the storage bucket in, connects the material in the storage bucket to shunt from a plurality of shunt tubes, and the material that the shunt tubes flowed can arrange to send to corresponding dosing unit's buffer hopper in, and buffer hopper keeps in the material. When the first control device is started, the second control device is closed, the materials in the buffer hopper can be discharged into the weighing hopper, the weighing hopper can weigh the discharged materials, and when the materials in the weighing hopper reach a set value, the first control device is closed by the control unit, the second control device is opened, and the materials can be sent out from the conveying device. Connect the setting of storage bucket and shunt tubes, make a material loading can the multistation batching operation, with the setting of staggering of a plurality of dosing unit's batching time, accomplish the batching at a dosing unit, carry out exhaust in-process to the material of joining in marriage, additional dosing unit carries out the work of batching, increases the efficiency of batching.

Preferably, the weighing unit comprises a plurality of sensor groups, each sensor group comprises a plurality of pressure sensors, and the pressure sensors are arranged between the rack and the weighing hopper.

Through adopting above-mentioned technical scheme, pressure sensor can measure the pressure of weighing the hopper to the frame to reach the purpose of measuring the interior material quality of weighing the hopper.

Preferably, the control unit comprises a controller and a plurality of first relays for controlling the first control devices, the sensor group is electrically connected with the controller, the controller is electrically connected with the controlled ends of the first relays, and the number of the first relays is the same as that of the first control devices.

By adopting the technical scheme, the sensor group outputs the measurement data to the controller, when the measurement data is smaller than the preset value, the controller controls the relay I to keep an off state, at the moment, the controller keeps a on state, when the measurement data is smaller than or larger than the preset value, the controller controls the relay I to be on, and at the moment, the controller I can work to discharge materials.

Preferably, the control unit further comprises a second relay for judging whether the materials in the weighing hoppers all reach a set value and are worthy of being switched to a gate circuit group and used for controlling the second control device, the gate circuit group is electrically connected with the controller, one end of the gate circuit group is electrically connected with the controller, and the other end of the gate circuit group is electrically connected with the second relay.

By adopting the technical scheme, the gate circuit group is used for detecting whether each weighing hopper in one batching device is weighed, and when the weighing hoppers are weighed, the gate circuit group outputs high level to the second relay to close the second relay, and the second control device works to discharge materials.

Preferably, the second relay is a multi-pole multi-throw type relay for simultaneously controlling the plurality of second control devices.

By adopting the technical scheme, the second relay is set to be a multi-pole multi-throw type relay so as to achieve the purpose of simultaneously controlling the second control devices.

Preferably, one control device comprises a valve body, valve plates, a valve shaft and a rotating part for driving the valve shaft to rotate, the valve shaft is rotatably supported on the valve body, the valve plates are fixed on the valve shaft, the number of the valve plates is at least three, the valve plates are uniformly arranged at intervals, and the structure of the second control device is the same as that of the first control device.

Through adopting above-mentioned technical scheme, rotate the rotation of piece drive valve shaft and can rotate to the valve plate, the valve plate rotates and to make the material discharge, and when the valve plate stall, the valve plate played the effect that blocks to the material to reach the purpose that stops row the material.

Preferably, conveyor includes third conveyer and is used for to first conveyer, the second conveyer of third conveyer conveying material, first conveyer sets up the below at dosing unit with the second conveyer, all be provided with putty device on first conveyer, the second conveyer, putty device with the control unit electric connection, still be provided with on the first conveyer and be used for detecting whether there is the detecting element of material process.

Through adopting above-mentioned technical scheme, first conveyer all is used for the output material with second conveyer, makes first conveyer and second conveyer send out the material to the third conveyer on through putty device and detecting element in turn, increases the efficiency of the ejection of compact.

Preferably, the detection unit includes a laser transmitter and a laser receiver, the laser receiver can receive the detection light emitted by the laser transmitter, and the laser receiver is electrically connected with the controller.

By adopting the technical scheme, the laser receiver can receive the detection light emitted by the laser emitter, when the material passes through, the material can block the detection light, and the laser receiver cannot receive the detection light at the moment so as to achieve the purpose of detecting whether the material passes through.

Preferably, the putty device includes support body, baffle and the pushing down piece that the drive baffle removed, the pushing down piece is fixed on the support body, the baffle is fixed on the pushing down piece, the control unit still includes relay three, be used for controlling the first solenoid valve of the first conveyer upper and lower casting die work, be used for controlling the second conveyer upper and lower casting die work solenoid valve two, relay three and controller electric connection.

Through adopting above-mentioned technical scheme, the pressure member can make the baffle remove and keep off the material operation, and through the setting of relay three, solenoid valve one and solenoid valve two, baffle on the first conveyer and the baffle on the second conveyer can alternate movement keep off the material operation to reach and make first conveyer and second conveyer send out the material mesh on the third conveyer in turn.

Preferably, the second conveying device comprises a driving device for driving the second conveying device to move, the control unit further comprises a frequency converter, the frequency converter is electrically connected with the controller, and the frequency converter is electrically connected with the driving device on the second conveying device to adjust the conveying speed of the second conveying device.

By adopting the technical scheme, when the first conveying device conveys the materials to the third conveying device, the control unit enables the conveying speed of the second conveying device to be slow, and the purpose of energy conservation is achieved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present application.

Fig. 2 is a schematic view showing a sectional structure of the inside of the housing.

Fig. 3 is a schematic structural diagram of the material distributing device and the material preparing device.

Fig. 4 is a schematic plan view of the batching device.

Fig. 5 is a schematic structural diagram of the first control device.

FIG. 6 is a diagram showing a connection relationship between the weighing cell and the control unit.

Fig. 7 is a schematic structural view of the conveying device.

Fig. 8 is a schematic structural view of the belt conveyor.

Fig. 9 is a schematic structural diagram of the detection unit and the control unit.

Reference numerals: 1. a frame; 2. a material storage device; 20. a raw material bin; 200. a first discharge pipeline; 21. a feeding device; 210. a housing; 211. a delivery shaft; 212. a conveying blade; 213. a drive member; 214. a discharge port; 3. a material distributing device; 30. a receiving barrel; 300. a first opening; 31. a shunt tube; 32. a vibration device; 4. a dosing device; 40. weighing a hopper; 400. opening three; 401. a discharge pipeline III; 402. an installation part; 41. a buffer hopper; 410. a second opening; 411. a discharge pipeline II; 5. a conveying device; 50. a first conveying device; 51. a second conveying device; 52. a third conveying device; 530. a support plate; 531. a rotating roller; 532. a conveyor belt; 533. a drive device; 534. a striker plate; 60. a first control device; 600. a valve body; 601. a valve plate; 602. a valve shaft; 603. a rotating member; 61. a second control device; 70. a weighing unit; 71. a controller; 72. a gate circuit group; 720. a first gate circuit; 721. a second gate circuit; 73. a frequency converter; KA1 and a first relay; KA2 and a relay II; KA3 and a relay III; k1, a first electromagnetic valve; k2 and a second electromagnetic valve; 8. a blocking device; 80. a frame body; 800. a support bar; 801. a cross bar; 81. a baffle plate; 82. a push-down member; 90. a laser transmitter; 91. a laser receiver.

Detailed Description

The present application is described in further detail below with reference to figures 1-9.

The embodiment of the application discloses high accuracy ejection of compact control system for proportioning machine. Referring to fig. 1, high accuracy discharge control system for proportioning machine includes frame 1, be provided with material storing device 2 in frame 1, feed divider 3, feed divider 4 and conveyor 5, according to the transport order of material, feed divider 3 arranges in feed divider 4 and arranges in between material storing device 2 and feed divider 4, feed divider 4 arranges in between feed divider 3 and conveyor 5, material storing device 2 is used for depositing the raw materials, feed divider 4 is used for distributing the raw materials in proportion, conveyor 5 is used for seeing the raw materials that will join in marriage out.

Referring to fig. 1, the material storage device 2 includes a plurality of raw material bins 20, the raw material bins 20 are vertically arranged, a first discharge pipeline 200 is arranged at the bottom of the raw material bins 20, a feeding device 21 is arranged at a position of the first discharge pipeline 200 in a communicating manner, and the feeding device 21 is used for sending out materials discharged from the raw material bins 20. Referring to fig. 2, the feeding device 21 includes a housing 210, a conveying shaft 211, a conveying blade 212 and a driving part 213 for driving the conveying blade 212 to rotate, the driving part 213 is selected as a rotating motor, the conveying blade 212 is fixedly sleeved on the conveying shaft 211, the conveying shaft 211 is rotatably supported in the housing 210, the driving part 213 is coaxially fixed with the conveying shaft 211, the driving part 213 can drive the conveying shaft 211 to rotate, one end of the housing 210 is communicated with a discharging pipeline 200, the other end of the housing is provided with a discharging port 214, the housing 210 is obliquely arranged, and the height of the end, which is close to the end communicated with the discharging pipeline 200, close to the ground is. The material in the raw material bin 20 falls into the housing 210, and the driving member 213 drives the conveying blade 212 to rotate, so that the material is discharged to the discharge port 214.

Referring to fig. 3, the material distributing device 3 includes a plurality of receiving barrels 30 and shunt tubes 31, the number of the receiving barrels 30 is the same as the number of the feeding devices 21, the number of the receiving barrels 30 is three in the present application, the top of the receiving barrel 30 is provided with a first opening 300, the one end of the housing 210 provided with the discharge port 214 is arranged above the first opening 300 to send the materials in the raw material bin 20 into the receiving barrel 30, the number of the shunt tubes 31 is set to be a plurality, the number of the shunt tubes 31 on each receiving barrel 30 is set to be two in the present application, the shunt tubes 31 are respectively arranged on two sides of the housing 210, and the position of the housing 210 near the bottom end is arranged, the shunt tubes 31 are communicated with the receiving barrels 30, the shunt tubes 31 are obliquely arranged, and the height of the shunt tubes 31 from the ground to the end. The materials can be fed into the receiving barrel 30 from the raw material bin 20 through the feeding device 21, and the materials in the receiving barrel 30 can be discharged from the flow dividing pipe 31.

Referring to fig. 3, the receiving barrel 30 is provided with a vibration device 32, the vibration device 32 is arranged at the bottom of the receiving barrel 30, the vibration device 32 is used for vibrating the receiving barrel 30, so that the material can be discharged from the flow dividing pipe 31 conveniently, the vibration device 32 is a vibration motor, and the vibration motor is fixedly arranged on the receiving barrel 30.

Referring to fig. 3 and 4, the batching device 4 includes a plurality of weighing hoppers 40 and buffer hoppers 41, the weighing hoppers 40 and the buffer hoppers 41 are the same in quantity, the weighing hoppers 40 and the buffer hoppers 41 are all set to be three in the present application, the weighing hoppers 40 and the buffer hoppers 41 are all installed on the rack 1, the buffer hoppers 41 are arranged above the weighing hoppers 40, the weighing hoppers 40 are arranged above the conveying device 5, the top of the buffer hoppers 41 is provided with a second opening 410, the bottom of the buffer hoppers 41 is provided with a second discharge pipeline 411, a first control device 60 is installed on the second discharge pipeline 411, and the first control device 60 is used for controlling the on-off of the second discharge pipeline 411. The top of the weighing hopper 40 is provided with a third opening 400, the bottom of the weighing hopper 40 is provided with a third discharge pipeline 401, the third discharge device is provided with a second control device 61, and the second control device 61 is used for controlling the on-off of the third discharge pipeline 401. This application dosing unit 4 sets up to two sets of, all is used for the material distribution operation.

Referring to fig. 5, the first control device 60 includes a valve body 600, a valve plate 601, a valve shaft 602 and a rotating member 603 for driving the rotating member 603 to rotate, the valve plate 601 is selected as a square and is set as a plurality of, the valve plates 601 are set as 4, the valve plates 601 are vertically set between the valve plates 601, the valve plate 601 is disposed in the valve body 600, a long side of the valve plate 601 is fixedly disposed with the valve shaft 602, and the valve plates 601 are uniformly and alternately disposed on the valve shaft 602 along the circumferential direction of the cross section of the valve shaft 602, the rotating member 603 is selected as a rotating motor, a motor shaft of the rotating motor is coaxially fixed with the valve shaft 602, and the rotating member 603 can drive the valve shaft 602.

The structure of the second control device 61 is the same as that of the first control device 60, and the second control device 61 is not described herein.

Referring to fig. 4, the batching device 4 is provided with a weighing unit 70 and a control unit, the weighing unit 70 is used for weighing the material mass of the weighing hopper 40, and the control unit is used for controlling batching, so that the proportion of discharged materials is relatively accurate.

Referring to fig. 4, the weighing unit 70 includes a plurality of sensor groups, the number of the sensor groups is the same as that of the weighing hoppers 40, each sensor group includes a plurality of pressure sensors, the pressure sensors are mounted on the frame 1, a mounting portion 402 is fixedly disposed on an outer wall of the weighing hopper 40, the mounting portion 402 is an annular plate-shaped structure, the mounting plate is disposed on the pressure sensors, and the pressure sensors are used for weighing the materials in the weighing hoppers 40.

Referring to fig. 5, the control unit includes a controller 71 and a first relay KA1, the weighing unit 70 is electrically connected to a signal input end of the controller 71, a signal output end of the controller 71 is electrically connected to a controlled end of the first relay KA1, a control end of the first relay KA1 is connected in series to a power supply circuit of the rotating member 603 of the first control device 60, the first relay KA1 is in a normally closed state, the number of the first relays KA1 is the same as that of the first control device 60, and the controller 71 is selected from one of a PLC and a single chip microcomputer. The control unit is used for controlling the discharging of the buffer hopper 41, the pressure sensor outputs a signal to the controller 71, when the pressure value detected by the pressure sensor is lower than a set value, the relay KA1 keeps a closed state, and the rotating member 603 of the control device I60 rotates for discharging; when the pressure value detected by the pressure sensor is greater than or equal to the set value, the controller 71 controls the relay KA1 to be switched off, and the rotating member 603 of the control device i 60 stops working, so that the blanking operation is stopped.

Referring to fig. 5, the control unit further includes a gate circuit group 72 and a second relay KA2, the signal output end of the controller 71 is electrically connected to the gate circuit group 72, the other end of the gate circuit group 72 is electrically connected to the controlled end of the second relay KA2, and the control end of the second relay KA2 is connected in series to the power supply circuit of the rotating member 603 in the second control device 61. The number of the second relays KA2 is the same as that of the batching devices 4, the second relays KA2 are arranged to be two, the second relays KA2 are arranged to be three-pole three-throw electromagnetic relays, and the second relays KA2 are in a normally open state. After the weighing unit 70 detects the weight of the weighing hopper 40, it outputs a signal to the controller 71, and when the pressure value detected by the pressure sensor is lower than the set value, the pressure sensor outputs a low level to the gate circuit group 72; when the pressure value detected by the pressure sensor is greater than or equal to the set value, the gate circuit group 72 outputs a high level to the gate circuit group 72 at this time.

Referring to fig. 5, the gate circuit group 72 includes a first gate circuit 720 and a second gate circuit 721, both the first gate circuit 720 and the second gate circuit 721 are configured as an and circuit, the output terminals Y1, Y2 of the controller 71 are electrically connected to the input terminal of the first gate circuit 720, the output terminal Y3 of the controller 71 is electrically connected to the input terminal of the second gate circuit 721, and the output terminal of the first gate circuit 720 is electrically connected to the input terminal of the second gate circuit 721. The gate circuit group 72 is used for judging an output signal of the controller 71, when the materials in the three weighing hoppers 40 of the batching device 4 all reach a set value, the second relay KA2 keeps an opening state, the rotating piece 603 of the second control device 61 keeps a state of stopping working, and when the materials in the three weighing hoppers 40 of the batching device 4 all are larger than or equal to the set value, the gate circuit group 72 outputs a signal to control the second relay KA2 to be closed, so that the rotating piece 603 of the second control device 61 rotates for blanking, and the materials which are batched by the batching device 4 every time are accurate.

Referring to fig. 7, the conveying device 5 includes a first conveying device 50, a second conveying device 51 and a third conveying device 52, the first conveying device 50 is disposed below one of the batching devices 4, the second conveying device 51 is disposed below the other batching device 4, the conveying directions of the first conveying device 50 and the second conveying device 51 are the same, the conveying direction of the first conveying device 50, the conveying direction of the second conveying device 51 and the conveying direction of the third conveying device 52 are perpendicular to each other, one end of the first conveying device 50 and one end of the second conveying device 51 are disposed above the third conveying device 52, and the materials conveyed by the first conveying device 50 and the second conveying device 51 can fall on the third conveying device 52 and then be conveyed out by the third conveying device 52. The first conveyor 50, the second conveyor 51 and the third conveyor 52 are all provided as belt conveyors,

referring to fig. 8, the belt conveyor includes a support plate 530, two rotating rollers 531, a conveyor belt 532 and a driving device 533 for driving the conveyor belt 532 to rotate, the support plate 530 is provided in pairs, the rotating rollers 531 are at least provided in two, the rotating rollers 531 are rotatably supported between the support plate 530, the conveyor belt 532 is sleeved on the rotating rollers 531, the conveyor belt 532 is tensioned, the driving device 533 is provided as a variable frequency motor, a motor shaft of the variable frequency motor is coaxially fixed with one of the rotating rollers 531, a baffle 534 is fixedly provided on the support plate 530, the baffle 534 is provided in pairs, and the baffle 534 is disposed on two sides of the conveyor belt 532 of the belt conveyor for reducing the occurrence of the overflow of the material on the belt conveyor.

Referring to fig. 7 and 8, the first conveying device 50 and the second conveying device 51 are both provided with a blocking device 8, the blocking device 8 comprises a frame body 80, a baffle 81 and lower pressing pieces 82, the frame body 80 is fixedly installed on the material blocking plate 534, the frame body 80 comprises supporting rods 800 and cross rods 801, the number of the supporting rods 800 is two, the two supporting rods 800 are vertically fixed on the material blocking plate 534 on two sides, the opposite side surfaces of the material blocking plate 534 are parallel and level to the opposite side surfaces of the supporting rods 800, the cross rods 801 are horizontally arranged, the two ends of the cross rods 801 are welded to the supporting rods 800, the lower pressing pieces 82 are selected to be cylinders, the cylinders are vertically arranged, the cylinder bodies of the cylinders are fixedly connected with the cross rods 801, the cylinder shafts of the cylinders are fixedly connected with the material blocking plates 534. Extension of the hold-down 82 can move the striker plate 534 downward into abutment with the conveyor belt 532 of the belt conveyor for temporarily blocking material.

Referring to fig. 7, a detection unit is arranged on the striker plate 534 of the first conveying device 50, the detection unit includes a laser emitter 90 and a laser receiver 91, the laser emitter 90 can emit detection laser, the laser receiver 91 can receive the detection laser, and the laser receiver 91 is electrically connected with the controller 71. The laser transmitter 90 and the laser receiver 91 are respectively disposed on the two striker plates 534 of the first conveyor 50 and are disposed near one end of the third conveyor 52.

Referring to fig. 8, the control unit further includes a relay three KA3, a solenoid valve one K1, and a solenoid valve two K2, a controlled end of the relay three KA3 is electrically connected to the controller 71, a control end of the relay three KA3 is connected in series to a power supply circuit in which the solenoid valve one K1 and the solenoid valve two K2 are located, the relay three KA3 is selected to be of a single-pole double-throw type, the relay three KA3 is provided with a throw knife and two throw points, one throw point is used for controlling on/off of the power supply circuit of the solenoid valve one K1, the other throw point is used for controlling on/off of the power supply circuit of the solenoid valve two K2, the solenoid valve one K1 is installed on an air path of the lower pressing member 82 on the first transmission device 50 and is used for controlling extension and retraction of the lower pressing member 82, and the solenoid valve two K2 is installed on an air path. The control unit further comprises a frequency converter 73, wherein one end of the frequency converter 73 is electrically connected to the controller 71, and the other end of the frequency converter 73 is electrically connected to the driving device 533.

When the detection unit detects that the first conveying device 50 has materials to be discharged to the third conveying device 52, the lower pressing piece 82 on the second conveying device 51 extends to enable the baffle 81 on the second conveying device 51 to fall down, meanwhile, the frequency converter 73 enables the rotating speed of the variable frequency motor on the second conveying device 51 to slow down, and if matched materials are discharged from the second conveying device 51 at the moment, the baffle 81 enables the materials on the second conveying device 51 to stay on the second conveying device 51 to wait; when the detecting unit detects that no material on the first conveying device 50 is to be discharged to the third conveying device 52, the pressing piece 82 of the second conveying device 51 is shortened to lift the baffle 81, and meanwhile, the rotating speed of the variable frequency motor of the second conveying device 51 is increased, so that the material on the second conveying device 51 can fall onto the third conveying device 52, and the purposes of orderly discharging and increasing the material mixing efficiency are achieved.

The implementation principle of the high-precision discharging control system for the batching machine is as follows: the materials are sent into the material receiving barrel 30 from the raw material bin 20 through the feeding device 21 and are respectively sent into the two groups of material distribution devices 4 through the shunt tubes 31, after the material distribution devices 4 distribute the materials, the materials are discharged and are alternately sent to the third conveying device 52 through the first conveying device 50 and the second conveying device 51, and then the materials are sent out to the next procedure through the third conveying device 52 for processing.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a high accuracy discharge control system for proportioning machine which characterized in that: comprises a rack (1), wherein a material storage device (2), a material distribution device (3), a batching device (4) and a conveying device (5) used for conveying prepared materials are arranged on the rack (1), the material storage device (2) comprises a plurality of raw material bins (20) and a feeding device (21) used for conveying the materials discharged from the raw material bins (20), the material distribution device (3) comprises a material receiving barrel (30) and at least two shunt tubes (31), the number of the shunt tubes (31) is at least two, the number of the batching device (4) is at least two, the batching device (4) comprises a plurality of weighing hoppers (40) and buffer hoppers (41) corresponding to the weighing hoppers (40), two openings (410) and two discharge pipelines (411) are arranged on the buffer hoppers (41), and a first control device (60) used for controlling the on-off of the second discharge pipeline (411) is arranged on the second discharge pipeline (411), the weighing hopper (40) is provided with a third opening (400) and a third discharge pipeline (401), a weighing unit (70) is arranged on the weighing hopper (40), a second control device (61) used for controlling the on-off of the third discharge pipeline (401) is arranged on the third discharge pipeline (401), a control unit used for controlling the first control device (60) and the second control device (61) is further arranged on the batching device (4), and the weighing unit (70) is electrically connected with the control unit.

2. The high-precision discharge control system for the dosing machine of claim 1, characterized in that: the weighing unit (70) comprises a plurality of sensor groups, each sensor group comprises a plurality of pressure sensors, and the pressure sensors are arranged between the rack (1) and the weighing hopper (40).

3. The high-precision discharge control system for the dosing machine of claim 2, characterized in that: the control unit includes controller (71) and a plurality of relay first KA1 that are used for controlling means (60), the sensor group with controller (71) electric connection, controller (71) with the controlled end electric connection of relay, the quantity of relay first KA1 with the quantity of controlling means (60) is the same.

4. The high-precision discharge control system for the dosing machine of claim 3, wherein: the control unit also comprises a second relay KA2 used for judging whether the materials in the weighing hoppers (40) all reach a set value and are worthy of being switched to a gate circuit group (72) and used for controlling the second control device (61), the gate circuit group (72) is electrically connected with the controller (71), one end of the gate circuit group (72) is electrically connected with the controller (71), and the other end of the gate circuit group (72) is electrically connected with the second relay KA 2.

5. The high-precision discharge control system for the dosing machine of claim 4, wherein: the second relay KA2 is provided as a multi-pole multi-throw type relay to control a plurality of second control devices (61) simultaneously.

6. The high-precision discharge control system for the dosing machine of claim 1, characterized in that: the first control device (60) comprises a valve body (600), a valve plate (601), a valve shaft (602) and a rotating part (603) for driving the valve shaft (602) to rotate, the valve shaft (602) is rotatably supported on the valve body (600), the valve plate (601) is fixed on the valve shaft (602), the number of the valve plates (601) is set to be at least three, the valve plates (601) are uniformly arranged at intervals, and the structure of the second control device (61) is the same as that of the first control device (60).

7. The high-precision discharge control system for the dosing machine of claim 1, characterized in that: conveyor (5) include third conveyer (52) and be used for to first conveyer (50), second conveyer (51) of third conveyer (52) conveying material, first conveyer (50) and second conveyer (51) set up the below at dosing unit (4), all be provided with putty device (8) on first conveyer (50), second conveyer (51), putty device (8) with the control unit electric connection, still be provided with the detecting element who is used for detecting whether there is the material to pass through on first conveyer (50).

8. The high-precision discharge control system for the dosing machine of claim 7, wherein: the detection unit comprises a laser transmitter (90) and a laser receiver (91), the laser receiver (91) can receive detection light emitted by the laser transmitter (90), and the laser receiver (91) is electrically connected with the controller (71).

9. The high-precision discharge control system for the dosing machine of claim 7, wherein: putty device (8) are including support body (80), lower pressure member (82) that baffle (81) and drive baffle (81) removed, lower pressure member (82) are fixed on support body (80), baffle (81) are fixed on lower pressure member (82), the control unit still includes relay three KA3, be used for controlling the solenoid valve K1 of lower pressure member (82) work on first conveyer (50), be used for controlling the second K2 of the solenoid valve of lower pressure member (82) work on second conveyer (51), relay three KA3 and controller (71) electric connection.

10. The high-precision discharge control system for the dosing machine of claim 7, wherein: the second conveying device (51) comprises a driving device (533) for driving the second conveying device (51) to move, the control unit further comprises a frequency converter (73), the frequency converter (73) is electrically connected with the controller (71), and the frequency converter (73) is electrically connected with the driving device (533) on the second conveying device (51) to adjust the conveying speed of the second conveying device (51).