CN108891939A - A kind of weighing device and weighing method of screw(-type) feeder - Google Patents
A kind of weighing device and weighing method of screw(-type) feeder Download PDFInfo
- Publication number
- CN108891939A CN108891939A CN201810858961.4A CN201810858961A CN108891939A CN 108891939 A CN108891939 A CN 108891939A CN 201810858961 A CN201810858961 A CN 201810858961A CN 108891939 A CN108891939 A CN 108891939A
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- CN
- China
- Prior art keywords
- weighing
- chute
- feeder
- screw
- type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/34—Emptying devices
- B65G65/40—Devices for emptying otherwise than from the top
- B65G65/46—Devices for emptying otherwise than from the top using screw conveyors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
- G01G17/06—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes having means for controlling the supply or discharge
Abstract
The present invention relates to powderies, bulk material weighing device, and in particular to a kind of weighing device and weighing method of screw(-type) feeder；The discharging side of transition chute including being mounted on screw(-type) feeder discharge end, the transition chute is also equipped with the weighing chute being parallel to each other with transition chute；First pressure sensor is connected on the weighing chute；Front end shell two sides positioned at the screw(-type) feeder of the discharging side of weighing chute are installed by bearing assembly respectively, roller bearing is connected between the bearing assembly, velocity measurement plate is fixed on the roller bearing, the side adjacent with weighing chute is not equipped with second pressure sensor to the velocity measurement plate；Two sensors pass through weight transmitter and are connected with PLC programmable controller, and the PLC programmable controller is connected with host computer by connection；The present invention is effectively controlled screw(-type) feeder dynamic weighing precision within 0.5%, and weighing accuracy is substantially improved, and may be used on all screw(-type) feeders and similar feeding device.
Description
Technical field
The present invention relates to powderies, bulk material weighing device, and in particular to a kind of weighing device and title of screw(-type) feeder
Weighing method.
Background technique
Weighing spiral feeder is to be continuously conveyed to various powderies, bulk cargo shape material, dynamic measuring, control feed
The measure of production equipment.Suitable for industries such as cement, chemical industry, metallurgy, ceramics, grain, transports.As metering, ingredient complete machine from
Dynamic makeup is set, and can provide accurate continuous data and control means for field management, operation.
The low problem of the generally existing weighing precision of weighing spiral feeder, dynamic error are generally higher than 2% at present, thus greatly
The popularization and application of weighing spiral feeder are affected greatly.
Summary of the invention
The present invention is to solve the problems, such as that existing screw(-type) feeder weighing precision is low, provides a kind of high-precision screw(-type) feeder
Weighing device and weighing method.
In order to solve the above technical problems, the technical scheme adopted by the invention is as follows：A kind of weighing device of screw(-type) feeder,
Transition chute including being mounted on screw(-type) feeder discharge end, the discharging side of the transition chute are also equipped with and transition chute
The weighing chute being parallel to each other, the transition chute and weighing chute include that the bottom plate being obliquely installed and two connect respectively
Connect the wing plate being vertically arranged at left and right sides of bottom plate；It is connected with sensor firm banking on the bottom plate of the weighing chute, it is described
First pressure sensor is installed on sensor firm banking；Positioned at the front end of the screw(-type) feeder of the discharging side of weighing chute
Bearing assembly is installed in shell two sides respectively, and roller bearing is connected between the bearing assembly, and velocity measurement plate, institute are fixed on the roller bearing
Stating velocity measurement plate, the side adjacent with weighing chute is not equipped with second pressure sensor；The first pressure sensor and the second pressure
Force snesor is connected with PLC programmable controller by weight transmitter, and the PLC programmable controller is connected by connection
There is host computer.
A kind of weighing method of screw(-type) feeder, is realized using such as above-mentioned weighing device, is included the following steps,
Firstly, passing through the rotation of screw(-type) feeder internal helicoid body, bulk material is persistently conveyed, material initially enters transition
Chute, then weighing chute is flowed into, velocity measurement plate is then rushed at, due to the active force of material, first pressure sensor and second pressure
Sensor, can to PLC programmable controller feedback analog amount electric signal,
Then, according to momentum theorem:F*T=M1*V1—M2*V2
Above-mentioned speed is horizontal direction, and after material impacting to velocity measurement plate, horizontal direction speed is V2=0, it is above-mentioned
Calculation formula is：
F*T=M1*V1
Wherein F is obtained by second pressure sensor measurement, M1It is obtained by first pressure sensor measurement, according to live real
Border determines data collection cycle T, which is constant, to calculate speed V of the material in the collection period1,
F1* T=M1*V1
In next collection period, similarly algorithm is executed：
F2* T=M2*V2
And so on：
F3* T=M3*V3
……
According to field condition, the quantity n of the speed V of acquisition is determined：
V1+V2+V3+V4+……+Vn=∑ V
Average speed VIt is average=∑ V ÷ n
According to calculated average speed VIt is average, with standard value VStandardIt is divided by, obtains ratio η1：
η1=VIt is average÷VStandard
η2=1.0- η1
MIt calculates=MTarget+MTarget×η2×η3
Wherein：MIt calculatesFor the revised calculated weight of system；
MTargetFor operator's target weight actually required；
MIt is practicalFor material actual weight；
η3To correct constant, determined according to the actual conditions of material；
According to above-mentioned formula, according to MIt calculatesValue be fed screw(-type) feeder, dynamic adjust weighing error, make MIt is practicalInfinitely connect
Nearly MTarget, and shown on host computer.
Compared with prior art the invention has the advantages that：
1, the weighing precision of weighing spiral feeder is effectively promoted, dynamic weighing precision can be effectively controlled within 0.5%,
Weighing accuracy is substantially improved, to be the popularization and application of weighing spiral feeder, lays a solid foundation.
2, the weighing-appliance of comparison mainstream in the market, such as belt Weighing feeder, apparatus of the present invention with no vulnerable part,
Structure is simple, has the advantages such as non-maintaining, installation effectiveness is high；
3, apparatus of the present invention are may be used on all screw(-type) feeders and similar feeding device, such as oscillating feeder,
The links such as apron feeder, reciprocating feeder, belt conveyer head are used for Weighing, only use in equipment discharge end
Apparatus of the present invention and algorithm, can be realized and be precisely weighed；
4, the present invention is powdery, the important breakthrough in the innovation of bulk material Dynamic Weighing Technology, with important economy and
Social benefit.
Detailed description of the invention
Fig. 1 is the weighting device structure schematic diagram of screw(-type) feeder.
Schematic diagram when Fig. 2 is the weighing device work of screw(-type) feeder.
Fig. 3 is the structural schematic diagram of transition chute.
Fig. 4 is the structural schematic diagram of weighing chute.
Connection structure main view of the Fig. 5 between velocity measurement plate and bearing assembly and roller bearing.
Fig. 6 is the left view of Fig. 5.
It is marked in figure as follows：
1- screw(-type) feeder, 2- transition chute, 3- positioning device, 4- weighing chute, 5- first pressure sensor, 6- sensing
Device firm banking, 7- roller bearing, 8- bearing assembly, 9- velocity measurement plate, 10- second pressure sensor, 11-PLC programmable controller,
12- host computer, 13- weight transmitter.
Specific embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
As shown in Figure 1, a kind of weighing device of screw(-type) feeder, the transition including being mounted on 1 discharge end of screw(-type) feeder
The discharging side of chute 2, the transition chute 2 is also equipped with the weighing chute 4 being parallel to each other with transition chute 2, the transition
Chute 2 and weighing chute 4 include that a bottom plate being obliquely installed and two are connected to the bottom plate left and right sides and are vertically arranged
Wing plate；It is connected with sensor firm banking 6 on the bottom plate of the weighing chute 4, is equipped on the sensor firm banking 6
First pressure sensor 5；Distinguish installation axle in front end shell two sides positioned at the screw(-type) feeder 1 of the discharging side of weighing chute 4
Bearing assembly 8 is connected with roller bearing 7 between the bearing assembly 8, is fixed with velocity measurement plate 9 on the roller bearing 7, the velocity measurement plate 9 not with
The adjacent side of weighing chute 4 is equipped with second pressure sensor 10；The first pressure sensor 5 and second pressure sensor
10 are connected with PLC programmable controller 11 by weight transmitter 13, and the PLC programmable controller 11 is connected by connection
There is host computer 12.
Further, the wing plate front and rear sides of the weighing chute 4 are mounted on positioning device 3, convenient for the chute 4 that will weigh
It is stably fixed on the inner wall of 1 shell of screw(-type) feeder.
As shown in figure 3, transition chute 2 includes that a bottom plate B being obliquely installed and two are connected to bottom plate or so two
An end of the wing plate A and C that side is vertically arranged, wing plate A and C are fixedly connected with the left and right ends of bottom plate B respectively, and wherein A hangs down
The vertical B of straight B, C, wing plate A and C are separately fixed on the casing inner wall of screw(-type) feeder 1.
As shown in figure 4, weighing chute 4 includes that a bottom plate E being obliquely installed and two are connected to bottom plate or so
The wing plate D and F that two sides are vertically arranged.Wherein, D is separately fixed at screw(-type) feeder 1 perpendicular to E, wing plate D and F perpendicular to E, F
On casing inner wall.
Bottom plate B is parallel to bottom plate E installation, but there are certain drops, and drop size is according to live practical determining.
As it can be seen in figures 5 and 6, one end of velocity measurement plate 9 is fixed on roller bearing 7, after material rushes at velocity measurement plate 9, velocity measurement plate 9 around
Roller bearing 7 rotates by a certain angle.
A kind of weighing method of screw(-type) feeder, is realized using such as above-mentioned weighing device, is included the following steps,
Firstly, as shown in Fig. 2, persistently conveying bulk material, material by the rotation of 1 internal helicoid body of screw(-type) feeder
Transition chute 2 is initially entered, then flows into weighing chute 4, then rushes at velocity measurement plate 9, due to the active force of material, first pressure is passed
Sensor 5 and second pressure sensor 10, can to 11 feedback analog amount electric signal of PLC programmable controller,
Then, according to momentum theorem:F*T=M1*V1—M2*V2
Above-mentioned speed is horizontal direction, and after material impacting to velocity measurement plate 9, horizontal direction speed is V2=0, it is above-mentioned
Calculation formula is：
F*T=M1*V1
Wherein F is obtained by the measurement of second pressure sensor 10, M1It is obtained by the measurement of first pressure sensor 5, according to scene
It is practical, determine data collection cycle T, which is constant, to calculate speed V of the material in the collection period1,
F1* T=M1*V1
In next collection period, similarly algorithm is executed：
F2* T=M2*V2
And so on：
F3* T=M3*V3
……
According to field condition, the quantity n of the speed V of acquisition is determined：
V1+V2+V3+V4+……+Vn=∑ V
Average speed VIt is average=∑ V ÷ n
According to calculated average speed VIt is average, with standard value VStandardIt is divided by, obtains ratio η1：
η1=VIt is average÷VStandard
η2=1.0- η1
MIt calculates=MTarget+MTarget×η2×η3
Wherein：MIt calculatesFor the revised calculated weight of system；
MTargetFor operator's target weight actually required；
MIt is practicalFor material actual weight；
η3To correct constant, determined according to the actual conditions of material；
According to above-mentioned formula, according to MIt calculatesValue make screw(-type) feeder 1 be fed, dynamic adjust weighing error, make MIt is practicalInfinitely
Close to MTarget, and shown on host computer 12.
Claims (3)
1. a kind of weighing device of screw(-type) feeder, which is characterized in that the transition including being mounted on screw(-type) feeder (1) discharge end
Chute (2), the discharging side of the transition chute (2) are also equipped with the weighing chute (4) being parallel to each other with transition chute (2),
The transition chute (2) and weighing chute (4) include that a bottom plate being obliquely installed and two are connected to bottom plate or so
The wing plate that two sides are vertically arranged；Sensor firm banking (6), the sensor are connected on the bottom plate of weighing chute (4)
First pressure sensor (5) are installed on firm banking (6)；Screw(-type) feeder (1) positioned at the discharging side of weighing chute (4)
Front end shell two sides install respectively bearing assembly (8), be connected with roller bearing (7), the roller bearing between the bearing assembly (8)
(7) it is fixed on velocity measurement plate (9), the side adjacent with weighing chute (4) is not equipped with second pressure sensing to the velocity measurement plate (9)
Device (10)；The first pressure sensor (5) and second pressure sensor (10) are connected with PLC by weight transmitter (13) can
Programmable controller (11), the PLC programmable controller (11) are connected with host computer (12) by connection.
2. a kind of weighing device of screw(-type) feeder according to claim 1, which is characterized in that the weighing chute (4)
Wing plate front and rear sides be mounted on positioning device (3).
3. a kind of weighing method of screw(-type) feeder, is realized, feature exists using weighing device as described in claim 1
In, include the following steps,
Firstly, passing through the rotation of screw(-type) feeder (1) internal helicoid body, bulk material is persistently conveyed, material initially enters transition
Chute (2), then weighing chute (4) is flowed into, velocity measurement plate (9) are then rushed at, due to the active force of material, first pressure sensor
(5) with second pressure sensor (10), can to PLC programmable controller (11) feedback analog amount electric signal,
Then, according to momentum theorem:F*T=M1*V1—M2*V2
Above-mentioned speed is horizontal direction, and after material impacting to velocity measurement plate (9), horizontal direction speed is V2=0, above-mentioned meter
Calculating formula is：
F*T=M1*V1
Wherein F is obtained by second pressure sensor (10) measurement, M1It is obtained by first pressure sensor (5) measurement, according to live real
Border determines data collection cycle T, which is constant, to calculate speed V of the material in the collection period1,
F1* T=M1*V1
In next collection period, similarly algorithm is executed：
F2* T=M2*V2
And so on：
F3* T=M3*V3
……
According to field condition, the quantity n of the speed V of acquisition is determined：
V1+V2+V3+V4+……+Vn=∑ V
Average speed VIt is average=∑ V ÷ n
According to calculated average speed VIt is average, with standard value VStandardIt is divided by, obtains ratio η1：
η1=VIt is average÷VStandard
η2=1.0- η1
MIt calculates=MTarget+MTarget×η2×η3
Wherein：MIt calculatesFor the revised calculated weight of system；
MTargetFor operator's target weight actually required；
MIt is practicalFor material actual weight；
η3To correct constant, determined according to the actual conditions of material；
According to above-mentioned formula, according to MIt calculatesValue make screw(-type) feeder (1) be fed, dynamic adjust weighing error, make MIt is practicalInfinitely connect
Nearly MTarget, and shown on host computer (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810858961.4A CN108891939A (en) | 2018-07-31 | 2018-07-31 | A kind of weighing device and weighing method of screw(-type) feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810858961.4A CN108891939A (en) | 2018-07-31 | 2018-07-31 | A kind of weighing device and weighing method of screw(-type) feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108891939A true CN108891939A (en) | 2018-11-27 |
Family
ID=64352921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810858961.4A Pending CN108891939A (en) | 2018-07-31 | 2018-07-31 | A kind of weighing device and weighing method of screw(-type) feeder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108891939A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855709A (en) * | 2019-03-28 | 2019-06-07 | 上海汇像信息技术有限公司 | Particle or the automatic of powder sample divide sample meausring apparatus and weighing technique |
| CN114414011A (en) * | 2021-12-14 | 2022-04-29 | 湖南中联重科新材料科技有限公司 | Control method and device for metering screw, controller and metering screw |
-
2018
- 2018-07-31 CN CN201810858961.4A patent/CN108891939A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855709A (en) * | 2019-03-28 | 2019-06-07 | 上海汇像信息技术有限公司 | Particle or the automatic of powder sample divide sample meausring apparatus and weighing technique |
| CN109855709B (en) * | 2019-03-28 | 2024-02-06 | 上海汇像信息技术有限公司 | Automatic sample separating and weighing device and method for granular or powder samples |
| CN114414011A (en) * | 2021-12-14 | 2022-04-29 | 湖南中联重科新材料科技有限公司 | Control method and device for metering screw, controller and metering screw |
| CN114414011B (en) * | 2021-12-14 | 2024-04-12 | 中联重科新材料科技有限公司 | Control method and device for metering screw, controller and metering screw |
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