CN109186712A - Chute material-level detection system and method - Google Patents
Chute material-level detection system and method Download PDFInfo
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- CN109186712A CN109186712A CN201811030205.9A CN201811030205A CN109186712A CN 109186712 A CN109186712 A CN 109186712A CN 201811030205 A CN201811030205 A CN 201811030205A CN 109186712 A CN109186712 A CN 109186712A
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- type trigger
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- 239000000463 material Substances 0.000 title claims abstract description 166
- 238000001514 detection method Methods 0.000 title claims abstract description 114
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000000903 blocking effect Effects 0.000 claims abstract description 152
- 238000012360 testing method Methods 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims description 17
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- 238000007906 compression Methods 0.000 claims description 7
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- 238000009825 accumulation Methods 0.000 claims description 2
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- 238000010586 diagram Methods 0.000 description 13
- 230000001276 controlling effect Effects 0.000 description 12
- 238000005453 pelletization Methods 0.000 description 9
- 238000007689 inspection Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000012856 packing Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
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- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 238000011895 specific detection Methods 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
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- 239000000428 dust Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
Abstract
The invention discloses a kind of chute material-level detection systems.The system includes: the pick-up control cabinet outside the material-level detecting device and chute being mounted in chute；The material-level detecting device includes: multiple blocking rotary type trigger units, is fixedly connected sequentially from the top down；Driving motor is sequentially connected with top blocking rotary type trigger unit, and is electrically connected with pick-up control cabinet to drive each blocking rotary type trigger unit to rotate；Detection circuit；Blocking rotary type trigger unit will test circuit conducting by the resistance of heap buildup, and the total resistance value in the detection circuit that is connected of each blocking rotary type trigger unit is different；Total resistance value is obtained by pick-up control cabinet to obtain controlling level.The invention also discloses a kind of methods detected using chute material-level detection system of the present invention.The present invention identifies material position by the resistance of heap buildup in chute, is not influenced by continuous-feeding, does not influence material self weight, and pollution-free, is suitble to the continuous feeding chute material-level measure of narrow space.
Description
Technical field
The present invention relates to solid material level detection technique fields, and in particular, to a kind of chute material-level detection system and method,
It is particularly suitable for the material-level measure of high pressure roller mill chute.
Background technique
With the high speed development and demand of steel industry, the importance of pellet is also increasingly highlighted, however either chain
Pelletizing is all a vital link, pelletizing pair in the pelletizing productions technique such as winding or belt type roasting machine or shaft furnace
The granularity and specific surface area of material have certain requirement, if specific surface area not enough will seriously affect pelletizing production efficiency and
Quality, therefore pressure roller grinder sequence is all increased before pelletizing ingredient by many pelletizing plants, passes through the ratio of high pressure roller mill process feed change
Surface area makes it meet the requirement of pelletizing process, improves the production efficiency and quality of pelletizing.With the appearance of high pressure roller mill process
Pelletizing process is improved to the adaptability of raw material, but consequently also with problem, that is, high-pressure roller mill requires its to be fed chute
Certain height (general 3m or so) is kept, the feeding to roll gap is completed by the gravity of stock column.In order to guarantee the gravity of stock column
It can act on roll gap and stablize, it is desirable that it is vertical that it, which is fed chute, and small lower mouth suitable for reading is big, and production process keeps stock column high
Degree is stablized.
Thus feed column height detection brings certain difficulty, conventional solid material level detection device (such as laser, thunder
Reach, ultrasound, weight etc.) because of upper part continuous-feeding and bore is small is not available, and because its gravity requires to act on roll gap
Weighing level-sensing device is not available yet, and previous project can only use nuclear level gauge, because its pollution, risk and management require it is high because
Element brings certain puzzlement to owner.
Summary of the invention
In view of the above-mentioned problems, the object of the present invention is to provide a kind of chute material-level detection system, to solve in the prior art
It must be provided with the problem of core source could detect chute material position.
Another object of the present invention is to provide a kind of methods detected using above-mentioned chute material-level detection system.
Above-mentioned purpose is achieved through the following technical solutions:
According to an aspect of the present invention, a kind of chute material-level detection system provided by the invention, comprising: be mounted on chute
Internal material-level detecting device, and it is mounted on the pick-up control cabinet outside chute；The material-level detecting device includes: multiple resistances
Rotating trigger unit, is fixedly connected sequentially from the top down；Driving motor is sequentially connected with the blocking rotary type trigger unit of top,
And it is electrically connected with the pick-up control cabinet；And detection circuit, the detection circuit are accumulated by blocking rotary type trigger unit
The resistance of material and be connected, and the total resistance value in the detection circuit that is connected of each blocking rotary type trigger unit is different；The pick-up
Control cabinet includes: power switch, for starting driving motor, so that the driving motor drives each blocking rotary type trigger unit rotation
Turn；And resistance detector, the total resistance value in detection circuit for detecting conducting, to obtain controlling level.
Preferably, the blocking rotary type trigger unit ecto-entad successively includes: touching material component, driving trigger assembly, rotation
Circle and fixation kit, the touching material component includes: touching barrel, for experiencing the resistance of heap buildup and protruding along barrel is touched
Touching material bar, it is described touching barrel inner wall on be provided with driving nest；The driving trigger assembly, for driving blocking rotary type triggering single
Member rotation and be used for conduction detection circuit, comprising: ball-and-socket connecting rod, positioned at ball-and-socket connecting rod one end driving ball, be connected to ball
The first contact chip with binding post of the nest connecting rod other end and be sleeved on outside ball-and-socket connecting rod and both ends respectively with rotation circle and
The sheath of fixation kit connection；Wherein, drive ball, ball-and-socket connecting rod and the first contact chip that can move back in the sheath
It is dynamic；Touching material bar is not affected by resistance, and the driving ball is located in driving nest and drives touching material component rotation, and detection circuit is in and opens
Line state；Touching material bar is stopped rotating by resistance, touching material component, and driving ball leaves driving nest and is rolled on touching material tube inner wall, together
When push ball-and-socket connecting rod and the first contact chip, the first contact chip makes the detection circuit being located in fixation kit be on shape
State.
Preferably, the fixation kit includes: the filling tube filled with insulating materials, and setting is in filling tube side and driving
The matched preformed hole of trigger assembly, and the fixed value resistance, conducting wire and the fixed value resistance that are connected in detection circuit pass through conducting wire company
The conducting wire of the first contact chip of the second contact chip and connection connect, wherein second contact chip is located in preformed hole, when first
When contact chip enters the preformed hole and the second contact chip compression, detection circuit conducting.
Preferably, the fixation kit further include setting filling drum outer wall on and outwardly directed support shaft；The touching
Expect that component further includes support slot, is circumferentially arranged and is located at the lower section of driving nest along the inner wall of touching barrel；Wherein, the support shaft is stretched
Enter in the support slot, material component is touched with support and can be rotated in support slot.
Preferably, the support shaft includes: fixed support loop bar, top roller bearing spring in fixed support loop bar, with
On the outside of the spring guide plate of top roller bearing spring connection, the column and spring guide plate being vertically fixed on spring guide plate
Support roller bearing, wherein connecting hole is provided on the fixed support loop bar, for connecting adjacent blocking rotary type trigger unit；Institute
It states fixed support loop bar both ends and is threadedly coupled filling tube and rotation circle respectively；The back-up roller the tip of the axis stretches out fixed support sleeve
Bar extend into support slot by top roller bearing spring and spring guide plate, and the support roller bearing compresses top roller bearing spring by column and moves back
Support slot out.Wherein, roller bearing spring and spring guide plate are pushed up and the support roller bearing is pushed into support slot, pull column to make described
Support roller bearing exits support slot.
Preferably, the driving trigger assembly further include: be connected to the insulation stop of ball-and-socket connecting rod end, both ends respectively and absolutely
Holddown spring, the column of putting into gear for being fixed on ball-and-socket connecting rod front end, the tension being connect with column of putting into gear of edge gear and the connection of the first contact chip
It spring and is connect with back-moving spring and is fixed on the tension column on sheath；Wherein, when driving ball push ball-and-socket connecting rod,
Ball-and-socket connecting rod compresses holddown spring, and back-moving spring is in tensional state；Under the pulling force effect of back-moving spring, ball-and-socket connecting rod is pushed
Ball is driven, so that driving ball enters driving nest, touching material component recovery rotation.
Preferably, in the material-level detecting device further include: be connected to the bottom on the blocking rotary type trigger unit of lowermost end
Bearing-type fixing end, the top bearing-type fixing end being connected on the blocking rotary type trigger unit of top are consolidated with top bearing-type
Rotary axle box that fixed end and driving motor are separately connected, the trolley being connected in detection circuit, top shield and fixed
Bracket, wherein the trolley includes fixed part and slipper, and fixed part is connect with top bearing-type fixing end, sliding
Dynamic part is connect with rotary axle box；The blocking rotary type trigger unit of top passes through top bearing-type fixing end and rotary axle box and drive
Dynamic motor drive connection；The fixed bracket is from driving motor, top bearing-type fixing end and bottom bearing formula fixing end
It is fixedly connected with chute walls respectively.
Preferably, the resistance detector in the pick-up control cabinet includes: adjustable rheostat and resistance converter, it is described can
Rheostat and resistance converter is adjusted to be connected in detection circuit.
Preferably, the resistance value of the fixed value resistance in the fixation kit of each blocking rotary type trigger unit is identical, each blocking rotary type
The height of trigger unit is identical, wherein when material position promotes blocking rotary type trigger unit U in chuteXWhen interior detection circuit is connected, total electricity
Hinder RAlwaysAre as follows:
RAlways=R0+R*X
If the stock column in chute increases again, blocking rotary type trigger unit U is touchedXA blocking rotary type above triggers single
First UX-1When, blocking rotary type trigger unit UX-1Interior detection circuit conducting, all-in resistance RAlwaysAre as follows:
RAlways=R0+R*(X-1)
If the stock column in chute is not to increase but reduce, charge level leaves blocking rotary type trigger unit UXWhen, it is down to resistance rotation
Formula trigger unit UX+1When, blocking rotary type trigger unit UXInterior detection circuit restores open circuit, promotes blocking rotary type trigger unit UX+1Interior
Detection circuit conducting, all-in resistance RAlwaysAre as follows:
RAlways=R0+R*(X+1)
Wherein, X is the serial number of blocking rotary type trigger unit, be followed successively by 1 from top to least significant end X, 2,3,4 ... n, n are
Positive integer, UXFor X blocking rotary type trigger unit, UX-1For -1 blocking rotary type trigger unit of X, UX+1For+1 blocking rotary type of X
Trigger unit, R are fixed value resistance resistance value, RAlwaysBy the total resistance value in the detection circuit that is connected under each state, R0For pick-up control
Adjustable rheostatic resistance value in case processed.
According to another aspect of the present invention, a kind of above-mentioned chute material-level detection system of use provided by the invention is examined
The method of survey, comprising the following steps:
It is configured according to the corresponding relationship of the controlling level and total resistance value that measure in advance and measured medium change in elevation
The quantity of blocking rotary type trigger unit, and chute material-level detection system is installed；
Open power switch, driving motor drives the rotation of each blocking rotary type trigger unit, when blocking rotary type trigger unit not by
When to heap buildup resistance, detection circuit is in open-circuit condition；
When accumulation material is accumulated to some blocking rotary type trigger unit UXWhen place, blocking rotary type trigger unit UXAnd under it
All blocking rotary type trigger units stop rotating, blocking rotary type trigger unit UXIt will test circuit conducting, it is all under it
Detection circuit in blocking rotary type trigger unit is short-circuit；Then, it is revolved according to the total resistance value in the detection circuit be connected at this time, resistance
Formula trigger unit UXThe corresponding relationship of location and the controlling level measured in advance and total resistance value, calculates at this time
Controlling level；
When heap buildup declines down to blocking rotary type trigger unit UXA following blocking rotary type trigger unit UX+1When, resistance rotation
Formula trigger unit UXRestore rotation, at this point, blocking rotary type trigger unit UX+1It will test circuit conducting, all resistances rotation under it
Detection circuit in formula trigger unit is short-circuit；Then, it is touched according to total resistance value, the blocking rotary type in the detection circuit be connected at this time
Bill member UX+1The corresponding relationship of location and the controlling level measured in advance and total resistance value calculates material at this time
Position height；
Wherein, X is the serial number of blocking rotary type trigger unit, be followed successively by 1 from top to least significant end X, 2,3,4 ... n, n are
Positive integer, UXFor X blocking rotary type trigger unit, UX+1For+1 blocking rotary type trigger unit of X.
The utility model has the advantages that
Chute material-level detection system of the present invention is by expecting self weight feeding and to keep a certain range of chute material-level measure
When can be by the resistance of heap buildup in chute come the height of recognition detection material position, laser, radar, ultrasound, weight, weighing etc. are conventional
Under the conditions of level-sensing device is undetectable, chute material-level detection system of the present invention be may be implemented, and electric conductivity to tested material and
The equal no requirement (NR) such as dielectric constant.
Chute material-level detection system of the present invention and method are not influenced by continuous-feeding, and do not influence the self weight of material, and nothing
Pollution is suitble to carry out material-level measure in the continuous feeding chute space of narrow space, avoids and must be provided with core in the prior art
Source just can measure the case where chute material position, and there is no pollutions by the present invention, and have mechanical structure, and maintenance is simple, save the cost
Advantage is particularly suitable for the material-level measure of high-pressure roller mill feed chute.
In addition, chute material level detection method of the present invention can increase and decrease according to live specific detection controlling level (constant interval)
The quantity of blocking rotary type trigger unit, further according to last practical quantity (resistance value in the table of comparisons) phase for retaining blocking rotary type trigger unit
Resistance converter in pick-up control cabinet is set with answering.
Detailed description of the invention
Fig. 1 is the use state diagram of chute material-level detection system of the present invention；
Fig. 2 is the structural schematic diagram of material-level detecting device in chute material-level detection system of the present invention；
Fig. 3 is detection circuit schematic diagram in chute material-level detection system of the present invention；
Fig. 4 is blocking rotary type trigger unit when ball being driven to be located in driving nest in chute material-level detection system of the present invention
Top view；
Fig. 5 is the partial enlarged view in Fig. 4 at C；
Fig. 6 is the side view of blocking rotary type trigger unit in chute material-level detection system of the present invention；
Fig. 7 is the top view in Fig. 6 at A-A；
Fig. 8 is the top view in Fig. 6 at B-B；
Fig. 9 is the diagrammatic cross-section of touching material component in chute material-level detection system of the present invention；
Figure 10 is the structural schematic diagram that trigger assembly is driven in chute material-level detection system of the present invention；
Figure 11 is the perspective view of the explosion of Figure 10；
Figure 12 is back-moving spring structural schematic diagram in chute material-level detection system driving trigger assembly of the present invention；
Figure 13 is the structural schematic diagram of fixation kit in chute material-level detection system of the present invention；
Figure 14 is the enlarged diagram in Figure 13 at D；
Figure 15 is the second contact chip connection in filling tube in chute material-level detection system of the present invention in fixation kit
Schematic diagram；
Figure 16 is that the filling tube in chute material-level detection system of the present invention in fixation kit is interior to be connect with the first contact chip
The schematic diagram of conducting wire.
Specific embodiment
The implementation of technical solution of the present invention described below with reference to the accompanying drawings.Those skilled in the art may recognize that
It arrives, it without departing from the spirit and scope of the present invention, can be with a variety of different modes or combinations thereof to described
Embodiment is modified.Therefore, attached drawing and description are regarded as illustrative in nature, rather than the protection for limiting claim
Range.In addition, in the present specification, attached drawing is drawn not in scale, and identical appended drawing reference indicates identical part.
As shown in Figure 1, 2, a kind of chute material-level detection system provided by the invention, comprising: be mounted on inside chute 900
Material-level detecting device, and it is mounted on the pick-up control cabinet 400 outside chute 900；The material-level detecting device includes: multiple resistances
Rotating trigger unit 1, is fixedly connected sequentially from the top down；Driving motor 3 is driven with the blocking rotary type trigger unit of top and connects
It connects, and is electrically connected with the pick-up control cabinet 400；And detection circuit, the detection circuit by blocking rotary type trigger unit 1 by
To heap buildup resistance and be connected, and the total resistance value in the detection circuit that is connected of each blocking rotary type trigger unit 1 is different；Institute
Stating pick-up control cabinet 400 includes: power switch, for starting driving motor 3, so that the driving motor 3 drives each blocking rotary type
Trigger unit 1 rotates；And resistance detector, the total resistance value in detection circuit for detecting conducting, to obtain material position
Highly.
When wherein, at the blocking rotary type trigger unit 1 for not being accumulated to lowermost end without windrow or windrow in chute 900,
Driving motor 3 drives blocking rotary type trigger unit 1 to rotate, and detection circuit is in open-circuit condition.When windrow is accumulated to certain in chute 900
When at one blocking rotary type trigger unit 1, the blocking rotary type trigger unit 1 and all blocking rotary type trigger units being disposed below stop
Spin-ended turn；Detection circuit is connected in the blocking rotary type trigger unit 1, and resistance detector obtains material position according to the total resistance value of detection
Highly；And all blocking rotary type trigger units being disposed below are in short-circuit condition.
The embodiment of the present invention is specifically described by taking high pressure roller mill chute as an example below in conjunction with Fig. 1-16.
Fig. 1 diagrammatically illustrates use state structure of the material-level detection system applied to high pressure roller mill chute when.Such as Fig. 1 institute
Show, material-level detection system of the present invention includes: the material-level detecting device in chute 900 and the pick-up outside chute 900
Control cabinet 400 is by cable connection between material-level detecting device and pick-up control cabinet 400, and pick-up control cabinet 400 gives material position
Detection device runs model, turns on the power switch, and starts the driving motor 3 in detection device, at this moment the electricity of material-level detecting device
Resistance value and material position have been built up corresponding relationship, and the total resistance value of detection device is by the resistance value pick-up in pick-up control cabinet 400
Device is converted into exporting with the one-to-one 4~20mA standard signal of controlling level.It is located at present system in Fig. 1 and is fed chute
Immediately below 900 is high-pressure roller mill roll gap, and high-pressure roller mill roll gap two sides are respectively the motor-driven roller of high pressure roller mill and fixing roller.Material
Level detecting apparatus passes through fixed bracket 7 and is fixed in feed chute 900, and arranges close to 900 wall of chute, and fixed bracket 7 can be with
Respectively from the driving motor of material-level detecting device 3, the top of blocking rotary type trigger unit 1 and bottom be fixed, fixed form
It is as shown in Figure 2 with position.
Fig. 2 diagrammatically illustrates the structural schematic diagram of material-level detecting device, and in order to the inspection of clearer expression material position
The overall effect for surveying device, by the therefrom separated expression of multiple blocking rotary type trigger units 1.As shown in Fig. 2, in high pressure roller mill chute
Material-level detecting device include: multiple blocking rotary type trigger units 1 being fixedly connected sequentially from the top down, with its internal detection circuitry
The trolley 2 of connection, the driving motor 3 being sequentially connected with blocking rotary type trigger unit 1, top shield 31, top bearing-type are solid
Fixed end 5, bottom bearing formula fixing end 6, rotary axle box 8 and the fixation bracket 7 for being fixed with chute 900.Wherein, detection electricity
Road is connected by some blocking rotary type trigger unit by the resistance of heap buildup, and the inspection that each blocking rotary type trigger unit is connected
Total resistance value in slowdown monitoring circuit is different.The resistance value when total resistance value is the detection circuit conducting of entire material-level detecting device,
It is not the fixed value resistance 143 in each blocking rotary type trigger unit fixation kit described below.Each blocking rotary type trigger unit
All-in resistance when by the conducting of entire material-level detecting device is different, so that corresponding controlling level is obtained, and the present invention is excellent
It is identical for selecting the resistance value of the fixed value resistance 143 in embodiment in the fixation kit 13 of each blocking rotary type trigger unit 1.
In use, being required to choose right quantity blocking rotary type trigger unit 1, multiple blocking rotary types according to tested material position change in elevation
It is sequentially connected using bolt by being vertically connected with hole 136 between trigger unit 1, is assembled into the effective measurement zone of material position.Bottom
Blocking rotary type trigger unit 1 is connect with bottom bearing formula fixing end 6, and the bearing of bottom bearing formula fixing end 6 is 45 ° of tilting axis
It holds, dust cap can be provided with load-bearing, the end of bottom bearing formula fixing end 6, outer end is bolted with fixed bracket 7, fixed
Bracket 7 is fixed in chute walls.Top bearing-type fixing end 5 includes the fixed part of internal rotating part and outside, most upper
The blocking rotary type trigger unit 1 on side and the rotating part of top bearing-type fixing end 5 are bolted, top bearing-type fixing end 5
Bearing is 45 ° of tilting bearings, can be with load-bearing, the rotating part and 3 transmission shaft keyway of driving motor of top bearing-type fixing end 5
Formula is connected.The fixed part of top bearing-type fixing end 5 is bolted with top shield 31, and the shell with driving motor 3
Bolt is fixedly connected, and fixed bracket 7 is also bolted on the fixed part of top bearing-type fixing end 5, solid by fixed bracket 7
It is scheduled in chute 900.8 top of rotary axle box is connect with 3 transmission shaft keyway of driving motor, lower part and top bearing-type fixing end 5
Internal rotating part dock naturally because being in fact synchronous rotation, i.e., driving motor 3, rotary axle box 8 rotating part, push up
The rotating part of portion's bearing-type fixing end 5 rotates synchronously, and multiple blocking rotary type trigger units 1 is driven to rotate.Trolley 2 includes fixing
Part and slipper, general fixed part are slide-wire guide rails, and slipper is current-collector；Top bearing-type fixing end 5 it is upper
Portion is bolted by the fixed part (being normally slide-wire guide rails) of bolt and trolley 2；The slipper of trolley 2 is (normal
For current-collector) it is bolted with rotary axle box 8.Trolley 2 is connected in detection circuit, as shown in Figure 3.
Fig. 3 diagrammatically illustrates the whole detection circuit flow chart in material-level detection system.As shown in figure 3, material position is examined
The detection circuit of survey include: each blocking rotary type trigger unit 1 fixed value resistance 143, driving trigger assembly 15, trolley 2 and
Adjustable rheostat R0 and resistance converter RT composition in pick-up control cabinet 400.Wherein, fixed value resistance 143, touching slip with
And adjustable rheostat series connection is in circuit, driving trigger assembly 15 is connected in parallel in each blocking rotary type trigger unit 1, for being connected to inspection
Slowdown monitoring circuit makes short circuit in corresponding blocking rotary type trigger unit.Under original state, circuit is in open-circuit condition.
In the present invention, depending on the actual demand of material position change in elevation concrete foundation production.The configuration of blocking rotary type trigger unit 1
Quantity is according to depending on measured medium change in elevation.For example, material position change in elevation is 1800mm, 60 blocking rotary type trigger units are configured
1, the identical height of each blocking rotary type trigger unit is 30mm, 143 phase of fixed value resistance built in each blocking rotary type trigger unit
With being 10 Ω, (adjusting adjustable variable resistance) swept resistance is 1000 Ω.As shown in figure 3, fixed value resistance R1-R60 is respectively corresponded
Blocking rotary type trigger unit 1-60, driving trigger assembly J1-J60 respectively correspond blocking rotary type trigger unit 1-60.
When material position promotes blocking rotary type trigger unit U in chuteXInterior circuit is connected, all blocking rotary types touching below the unit
The circuit of bill member all short circuits, then according to RAlways=R0+ R*X obtains the all-in resistance in high pressure roller mill chute in material-level detecting device
RAlwaysAre as follows:
RAlways=1000+10*X
If the stock column in chute increases again, blocking rotary type trigger unit U is touchedXA blocking rotary type above triggers single
First UX-1When, UX-1With UXThe process of triggering is the same, blocking rotary type trigger unit UX-1Interior circuit conducting, UXAnd all resistances rotation below
The circuit of formula trigger unit all short circuits, at this point, according to RAlways=R0+ R* (X-1) obtains material-level measure in high pressure roller mill chute and fills
Set interior all-in resistance RAlwaysAre as follows:
RAlways=1000+10* (X-1)
If the stock column in chute is not to increase but reduce, when charge level leaves blocking rotary type trigger unit UX, drop to resistance
Rotating trigger unit UX+1When, blocking rotary type trigger unit UXInterior detection circuit restores open circuit, promotes blocking rotary type trigger unit UX+1It is interior
Detection circuit conducting, according to RAlways=R0+ R* (X+1) obtains the all-in resistance R in high pressure roller mill chute in material-level detecting deviceAlways
Are as follows:
RAlways=1000+10* (X+1)
Wherein, X is the serial number of blocking rotary type trigger unit, be followed successively by 1 from top to least significant end X, 2,3,4 ... n, n are
Positive integer, UXFor X blocking rotary type trigger unit, UX-1For -1 blocking rotary type trigger unit of X, UX+1For+1 blocking rotary type of X
Trigger unit, R are each 1 default value resistance of blocking rotary type trigger unit, and are 10 Ω, RAlwaysBy the inspection be connected under each state
Total resistance value in slowdown monitoring circuit, R0It is 1000 Ω for the adjustable rheostatic resistance value in pick-up control cabinet.
The variation of chute controlling level can trigger or restore the blocking rotary type trigger unit 1 of corresponding different height, i.e., it is corresponding not
Same detection circuit is connected or open circuit, and the total resistance value of material-level detecting device also changes therewith in high pressure roller mill chute.By
This is it can be concluded that material position changes and the resistance R in material-level detecting device in high pressure roller mill chute in chuteAlwaysRelationship, it is specific corresponding
Relationship is as shown in table 1 below:
Table 1
All-in resistance R in high pressure roller mill chute in material-level detecting deviceAlwaysThe resistance pick-up in pick-up control cabinet 400 can be passed through
Resistance signal is converted the output of standard 4~20mA signal by device RT.First according to material position variation in measured medium change in elevation, table 1
With resistance RAlwaysCorresponding relationship, determine the configuration quantity of blocking rotary type trigger unit 1, adjust adjustable rheostatic in pick-up control cabinet
Resistance value, the corresponding upper table of the all-in resistance resistance value finally measured according to pick-up control cabinet obtain specific controlling level.
Fig. 4-8 diagrammatically illustrates the structure of blocking rotary type trigger unit 1.Wherein, Fig. 4 is bowing for blocking rotary type trigger unit 1
View shows the structure when driving ball 151 inner positioned at driving nest 113, and back-moving spring 159 at this time is in slight
Tension；Fig. 5 is the partial enlarged view in Fig. 4 at A；The side view of Fig. 6 blocking rotary type trigger unit 1, the i.e. front of Fig. 2 (after
Side) view；Fig. 7 is the top view in Fig. 6 at A-A, also shows the knot when driving ball 151 to be located in driving nest 113
Structure；Fig. 8 is the top view in Fig. 6 at B-B, and support roller bearing 135 protrudes into support slot 112 at this time.As shown in Figure 4-8, resistance rotation
1 ecto-entad of formula trigger unit successively includes: touching material component 11, driving trigger assembly 15, rotates circle 12, fixation kit 13, Gu
Determine inside component 13 filled with rigid insulation packing material 14.Wherein, back-up roller of touching material 11 block set of component in fixation kit 13
On axis 135, the support roller bearing 135 in fixation kit 13 is protruded into touching material component 11 support slot 112 as shown in Figure 9, so that
Frictional force is small when fixation kit 13 is rotated and rotated in support slot 112.
When the touching material bar 111 in touching material component 11 does not contact material (being not affected by resistance), ball is driven as shown in Figure 7
151 protrude into touching material component 11 driving nest 113 in touching material component 11 contact, drive touching material component 11 rotate, blocking rotary type triggering
Circuit in unit 1 is open-circuit condition.The first contact chip with binding post in circuit is connected by conducting wire as shown in Figure 7
154, it is not contacted with being separated by the second contact chip 144 with binding post of the connection of conducting wire 146 in circuit, so that circuit
Off-state.
When the contact of touching material bar 111 in touching material component 11 is expected by resistance, touching material bar 111 is increased by resistance, forces
Touching material component 11 stops, and driving ball 151 leaves the driving nest 113 of touching material component 11, slides on the inner wall of touching barrel 114,
And the inner wall point contact of driving ball 151 and touching barrel 114, driving ball 151 push ball-and-socket connecting rod 152, ball-and-socket connecting rod at this time
152 with insulation stop 155, holddown spring 153 and the first contact chip 154 with binding post into rigid insulation packing material 14
The second contact chip 144 with binding post compresses, and the first contact chip 154 in the blocking rotary type trigger unit allows for entire material position inspection
Survey the detection circuit conducting in device.And back-moving spring 159 at this time is in complete tension.
When charge level declines, and leaves touching material bar 111, touching material bar 111 is disappeared by resistance, is tensing column 158, is tensing bullet
In the driving nest 113 for making the touching material component 11 for driving ball 151 to protrude into again under spring 159,156 collective effect of column of putting into gear, drive
Touching material component 11 rotates, and the circuit in the blocking rotary type trigger unit 1 restores open-circuit condition.And back-moving spring 159 at this time is in
Little tension.
Fig. 9 diagrammatically illustrates the cross-section structure of touching material component 11.As shown in figure 9, touching material component 11 includes touching barrel
114, for experiencing the resistance of heap buildup and along the outwardly directed touching material bar 111 of touching barrel 114, the inner wall axis of edge touching barrel 114
To setting support slot 112, touch barrel 114 inner wall on and be located at support slot 112 above be provided with drive ball 151 match
Driving nest 113.
Touching material bar 111 can be integrally welded with touching barrel 114, and touching material bar 111 can be located at the two sides of touching barrel 114,
But not limited to this, bar is expected in the more touchings that also can connect on touching barrel 114, to incude heap buildup resistance.Support slot 112 and branch
Support roller bearing 135 contact, support touching material component 11, support roller bearing 135 in support slot 112 can be rotated and rotate when with touching material group
Friction is small between part 11.It drives ball 151 to be located in driving nest 113, contacts with each other, the driving driving touching material of ball 151
Component 11 rotates, and meets heap buildup driving touching material component 11 and stops rotating, driving ball 151 leaves driving nest 113, along touching barrel
114 inner walls roll, and back-moving spring 159 is in complete tension under the thrust of driving ball 151 at this time, leave in heap buildup
After touching material component 11, driving ball 151 is again introduced into driving nest 113 under the pulling force effect of back-moving spring 159 and drives touching
Expect that component 11 rotates.
Figure 10-12 diagrammatically illustrates the structure of driving trigger assembly 15, wherein Figure 10 is overall structure diagram；Figure
11 be to drive the part detonation configuration of trigger assembly 15, and show column 156 of putting into gear；Figure 12 is to tense in driving trigger assembly 15
The structure of spring 159, and be when driving ball 151 is located in driving nest 113 at this time, back-moving spring 159 is in light tension shape
Structure chart under state.As shown in figs. 10-12, for driving blocking rotary type trigger unit 1 to rotate and for conduction detection circuit
Driving trigger assembly 15 include: from left to right successively drive ball 151, ball-and-socket connecting rod 152, insulation stop 155, holddown spring 153,
The first contact chip 154 with binding post, and be arranged in outside ball-and-socket connecting rod 152 with externally threaded and both ends respectively with rotation
It turn-takes the sheath 157 connected with fixation kit, is fixed on the column 156 of putting into gear of ball-and-socket connecting rod front end, the tension connecting with column of putting into gear
Spring 159, and connect with back-moving spring and be fixed on the tension column 158 on sheath.
Wherein, sheath 157 from rotation circle 12 outside, with screw thread simultaneously connect rotation circle 12 and filling tube 131 on, formed from
Touch 114 inner wall of barrel to the second contact chip 144 with binding post a cavity, driving ball 151, ball-and-socket connecting rod 152 and
First contact chip 154 can move left and right back and forth in cavity.Drive ball 151 under the action of back-moving spring 159 with drive
Start moving 113 and ball-and-socket connecting rod 152 be in nature close contact state.The end of ball-and-socket connecting rod 152 is provided with and driving ball
151 matched ball-and-socket ends can slidably reciprocate under the action of back-moving spring 159 and driving ball 151 in sheath 157.It drives
Dynamic ball 151 leaves driving nest 113, and ball-and-socket connecting rod 152 and insulation stop 155, compression holddown spring 153 is pushed (to tense bullet at this time
Spring 159 is now in complete tension), to push second contact chip 144 of first contact chip 154 into fixation kit 13
It is mobile.Under the pulling force effect for the back-moving spring 159 being fixed on sheath 157, column 156 of putting into gear is with ball-and-socket connecting rod 152, insulation
Gear 155, holddown spring 153 and the first contact chip 154 reverse movement, push driving ball 151 to enter the drive of touching material component 11
Start moving 113, driving touching material component 11 restores rotation.Holddown spring 153 is fixed on ball-and-socket by insulation stop 155 with insulated bolt and connects
On bar 152, close contact when guaranteeing that the first contact chip 154 with binding post is contacted with the second contact chip 144 with binding post,
And insulation stop 155 keeps route in blocking rotary type trigger unit 1 and the external world completely separated, prevents the outer watchband of blocking rotary type trigger unit 1
Electricity improves the equipment safety and explosion-proof.156 one end external screw thread of column of putting into gear is fixed on ball-and-socket connecting rod 152, it is therefore an objective to can be with
By the pulling force effect of back-moving spring 159 on ball-and-socket connecting rod 152；It tenses column 158 and external screw thread sheath is fixed on by external screw thread
On 157, with the both ends of fixed strain spring 159.
Figure 13-14 schematically shows the structure of fixation kit 13, and Figure 13 is that 13 overall schematic of fixation kit (is not wrapped
Containing hard insulation), Figure 14 is the enlarged diagram at D.As illustrated in figs. 13-14, fixation kit 13 includes: filled with hard
The filling tube 131 of insulating materials, and setting filling drum outer wall on and outwardly directed support shaft；Wherein, support shaft includes:
Fixed support loop bar 132, positioned at the fixed top roller bearing spring 133 supported in loop bar 132, spring guide plate 134, is vertically fixed on
The support roller bearing 135 on the outside of column 137, spring guide plate on spring guide plate 134.
It supports the end of roller bearing 135 to stretch out fixed support loop bar 132, passes through top roller bearing spring 133 and spring guide plate 134
It is pushed into support slot 112.131 side of filling tube is provided with preformed hole to connect driving trigger assembly 15, so that the first contact chip 154
It is connect with the second contact chip 144, as shown in figure 15, the second contact chip 144 with binding post is located in preformed hole, when the first contact
When piece 154 enters the preformed hole and the second contact chip 144 compression, detection circuit conducting.On the fixed support loop bar 132 also
It is provided with and is vertically connected with hole 136, be bolted to connection adjacent blocking rotary type trigger unit 1, by bolt by top
Blocking rotary type trigger unit 1 is fixedly connected with top bearing-type fixing end 5, by bolt by the blocking rotary type trigger unit 1 of least significant end
It is fixedly connected with bottom bearing formula fixing end 6.Fixed support 132 outer surface of loop bar is provided with external screw thread, can be only in fixed branch
The both ends of looper arm 132 are provided with external screw thread, from 12 outside of rotation circle, connect rotation circle 12 and filling tube simultaneously with screw thread
On 131, it is bonded rotation circle 12 and filling tube 131.Top roller bearing spring 133 is bolted with spring guide plate 134, natural
It is installed in support loop bar 132, support roller bearing 135 pushes up roller bearing spring by the compression of spring guide plate 134 top roller bearing spring 133
133 reactions are pushed back-up roller axis 135 and are entered in support slot 112, and touching material component 11 is supported.137 one end external screw thread of column is solid
It, will due on spring guide plate 134, pulling the compression of column 137 top roller bearing spring 133 to make that roller bearing 135 is supported to exit support slot 112
Touching material component 11 is separated with rotation circle 12.
Figure 15-16 diagrammatically illustrates the circuit connection diagram in fixation kit on hard insulation, and Figure 15 shows electricity
Fixed value resistance 143 in road and the structure that the second contact chip 144 with binding post is connected to by conducting wire 146；In Figure 16 to
The conducting wire that left side is stretched out is the first contact chip 154 for connecting band binding post, so that the first contact chip 154 is connected to electricity
In the circuit of road.As shown in figures 15-16, include: hard insulation 14 in the filling tube 131 of fixation kit, and be connected to inspection
Non-conductive socket 142, fixed value resistance 143 in slowdown monitoring circuit are connect with fixed value resistance 143 by second with binding post that conducting wire is connect
Contact 144, arcuate conducting prong elements 145, conducting wire 146.Wherein rigid insulation packing material 14 is pressed in filling tube 131, with binding post
Second contact chip 144 is fixed on rigid insulation packing material 14, and the first contact chip with binding post corresponding with filling tube 131
154 preformed hole alignment, the second contact chip 144 with binding post is located in preformed hole, to contact with first with binding post
Piece 154 compresses the conducting for completing detection circuit.As shown in figure 15, the first contact chip 154 with binding post is connect with conducting wire 146,
The second contact chip 144 with binding post is connect with conducting wire 146, when the first contact chip 154 and the second contact chip 144 compression, electricity
Road conducting.Non-conductive socket 142 is fixed on rigid insulation packing material 14 to be connect by the connection of conducting wire 146 fixed value resistance 143, first
The binding post of contact 144, arcuate conducting prong elements 145, the second contact chip 154 binding post on.
In the present invention, the pick-up control cabinet 400 of chute material-level detection system includes: power switch, for starting driving electricity
Machine, so that the driving motor drives each blocking rotary type trigger unit rotation；And resistance detector, for detecting the detection of conducting
Total resistance value in circuit, to obtain controlling level.Wherein, it can specifically include: resistance converter RT, adjustable rheostat
R0, D.C. regulated power supply, motor protecter, contactor, change-over switch and start-stop button.To complete the inspection of high pressure roller mill chute material position
Survey the operation of device, stopping, protection and signal conversion, zero point calibration function, required power supply is 220V AC, outputting standard 4~
20mA signal.
The present invention identifies material position by the resistance of heap buildup in chute, is not influenced by continuous-feeding, does not influence material certainly
Weight, it is pollution-free, it is suitble to the continuous feeding chute material-level measure of narrow space.It can be according to live specific detection controlling level constant interval
Increase and decrease blocking rotary type trigger unit quantity, correspondingly according to the quantity (resistance value in the table of comparisons) of last practical blocking rotary type trigger unit
Resistance converter in pick-up control cabinet is set.
The above is only embodiments of the present invention, are not intended to restrict the invention, for those skilled in the art,
The invention may be variously modified and varied.It is all within spirit of that invention and principle, made any modification, equivalent replacement,
Improve etc., it should be included within the scope of the present invention.
Claims (10)
1. a kind of chute material-level detection system characterized by comprising it is mounted on the material-level detecting device of chute interior, and
The pick-up control cabinet being mounted on outside chute；
The material-level detecting device includes: multiple blocking rotary type trigger units, is fixedly connected sequentially from the top down；Driving motor, with
The blocking rotary type trigger unit of top is sequentially connected, and is electrically connected with the pick-up control cabinet；And detection circuit, the detection
Resistance of the circuit by blocking rotary type trigger unit by heap buildup is connected, and the detection that each blocking rotary type trigger unit is connected
Total resistance value in circuit is different；
The pick-up control cabinet includes: power switch, for starting driving motor, so that the driving motor drives each blocking rotary type
Trigger unit rotation；And resistance detector, the total resistance value in detection circuit for detecting conducting, to obtain material position height
Degree.
2. chute material-level detection system as described in claim 1, which is characterized in that the blocking rotary type trigger unit ecto-entad
Successively include: touching material component, driving trigger assembly, rotate circle and fixation kit,
The touching material component includes: touching barrel, and the resistance for experiencing heap buildup expects bar along the outwardly directed touching of touching barrel,
Driving nest is provided on the inner wall of the touching barrel；
The driving trigger assembly, for driving blocking rotary type trigger unit to rotate and for conduction detection circuit, comprising: ball-and-socket
Connecting rod, positioned at ball-and-socket connecting rod one end driving ball, be connected to the ball-and-socket connecting rod other end the first contact chip with binding post, with
And it is sleeved on the sheath that outside ball-and-socket connecting rod and both ends are connect with rotation circle and fixation kit respectively；Wherein, ball, ball-and-socket are driven
Connecting rod and the first contact chip can move back and forth in the sheath；Touching material bar is not affected by resistance, and the driving ball, which is located at, to be driven
In starting moving and touching material component rotation is driven, detection circuit is in open-circuit condition；Touching material bar is stopped rotation by resistance, touching material component
Turn, driving ball leaves driving nest and is rolled on touching material tube inner wall, while pushing ball-and-socket connecting rod and the first contact chip, the first contact chip
So that the detection circuit being located in fixation kit is in the conductive state.
3. chute material-level detection system as claimed in claim 2, which is characterized in that
The fixation kit includes: the filling tube filled with insulating materials, and setting is in filling tube side and driving trigger assembly
The preformed hole matched, and the fixed value resistance, conducting wire and the fixed value resistance that are connected in detection circuit second connect by the way that conducting wire connects
Contact and the conducting wire for connecting the first contact chip, wherein
Second contact chip is located in preformed hole, when the first contact chip enters the preformed hole and the second contact chip compresses,
Detection circuit conducting.
4. chute material-level detection system as claimed in claim 3, which is characterized in that
The fixation kit further include setting filling drum outer wall on and outwardly directed support shaft；
The touching material component further includes support slot, is circumferentially arranged and is located at the lower section of driving nest along the inner wall of touching barrel；Wherein, institute
It states support shaft to extend into the support slot, material component is touched with support and can be rotated in support slot.
5. chute material-level detection system as claimed in claim 4, which is characterized in that
The support shaft includes: fixed support loop bar, and the top roller bearing spring and top roller bearing spring in fixed support loop bar connect
Support roller bearing on the outside of the spring guide plate that connects, the column and spring guide plate being fixed on spring guide plate, wherein
It is provided with connecting hole on the fixed support loop bar, for connecting adjacent blocking rotary type trigger unit；
The fixed support loop bar both ends are threadedly coupled filling tube and rotation circle respectively；
The back-up roller the tip of the axis stretches out fixed support loop bar and extend into support slot by top roller bearing spring and spring guide plate,
The support roller bearing compresses top roller bearing spring by column and exits support slot.
6. chute material-level detection system as claimed in claim 2, which is characterized in that
The driving trigger assembly further include: be connected to the insulation stop of ball-and-socket connecting rod end, both ends respectively with insulation stop and first
The holddown spring of contact chip connection, column of putting into gear, the back-moving spring being connect with column of putting into gear, Yi Jiyu for being fixed on ball-and-socket connecting rod front end
The tension column that back-moving spring is connected and is fixed on sheath；Wherein, when driving ball pushes ball-and-socket connecting rod, the compression of ball-and-socket connecting rod
Holddown spring, back-moving spring are in tensional state；Under the pulling force effect of back-moving spring, ball-and-socket connecting rod pushes driving ball, makes
Ball must be driven to enter driving nest, touching material component recovery rotation.
7. chute material-level detection system as described in claim 1, which is characterized in that
In the material-level detecting device further include: the bottom bearing formula being connected on the blocking rotary type trigger unit of lowermost end is fixed
The top bearing-type fixing end hold, being connected on the blocking rotary type trigger unit of top and top bearing-type fixing end and driving
Rotary axle box that motor is separately connected, the trolley being connected in detection circuit, top shield and fixed bracket, wherein
The trolley includes fixed part and slipper, and fixed part is connect with top bearing-type fixing end, slipper
It is connect with rotary axle box；The blocking rotary type trigger unit of top passes through top bearing-type fixing end and rotary axle box and driving motor
Transmission connection；The fixed bracket is from driving motor, top bearing-type fixing end and bottom bearing formula fixing end and chute
Wall is fixedly connected.
8. chute material-level detection system as claimed in claim 3, which is characterized in that
Resistance detector in the pick-up control cabinet includes: adjustable rheostat and resistance converter, the adjustable rheostat and
Resistance converter is connected in detection circuit.
9. chute material-level detection system as claimed in claim 8, which is characterized in that the fixation group of each blocking rotary type trigger unit
The resistance value of fixed value resistance in part is identical, and the height of each blocking rotary type trigger unit is identical, wherein
When material position promotes blocking rotary type trigger unit U in chuteXWhen interior detection circuit is connected, all-in resistance RAlwaysAre as follows:
RAlways=R0+R*X
If the stock column in chute increases again, blocking rotary type trigger unit U is touchedXA blocking rotary type trigger unit U aboveX-1
When, blocking rotary type trigger unit UX-1Interior detection circuit conducting, all-in resistance RAlwaysAre as follows:
RAlways=R0+R*(X-1)
If the stock column in chute is not to increase but reduce, charge level leaves blocking rotary type trigger unit UXWhen, it is down to blocking rotary type triggering
Unit UX+1When, blocking rotary type trigger unit UXInterior detection circuit restores open circuit, promotes blocking rotary type trigger unit UX+1Interior detection electricity
Road conducting, all-in resistance RAlwaysAre as follows:
RAlways=R0+R*(X+1)
Wherein, X is the serial number of blocking rotary type trigger unit, be followed successively by 1 from top to least significant end X, 2,3,4 ... n, n are positive whole
Number, UXFor X blocking rotary type trigger unit, UX-1For -1 blocking rotary type trigger unit of X, UX+1For+1 blocking rotary type triggering of X
Unit, R are fixed value resistance resistance value, RAlwaysBy the total resistance value in the detection circuit that is connected under each state, R0For pick-up control cabinet
In adjustable rheostatic resistance value.
10. a kind of method for carrying out material-level measure using chute material-level detection system as described in claim 1, feature exist
In, comprising the following steps:
Resistance rotation is configured according to the corresponding relationship of the controlling level and total resistance value that measure in advance and measured medium change in elevation
The quantity of formula trigger unit, and chute material-level detection system is installed；
Power switch is opened, driving motor drives each blocking rotary type trigger unit rotation, when blocking rotary type trigger unit is not affected by heap
When buildup resistance, detection circuit is in open-circuit condition；
When accumulation material is accumulated to some blocking rotary type trigger unit UXWhen place, blocking rotary type trigger unit UXAnd it is all under it
Blocking rotary type trigger unit stops rotating, blocking rotary type trigger unit UXIt will test circuit conducting, all resistances rotation under it
Detection circuit in formula trigger unit is short-circuit；Then, it is touched according to total resistance value, the blocking rotary type in the detection circuit be connected at this time
Bill member UXThe corresponding relationship of location and the controlling level measured in advance and total resistance value calculates material at this time
Position height；
When heap buildup declines down to blocking rotary type trigger unit UXA following blocking rotary type trigger unit UX+1When, blocking rotary type triggering
Unit UXRestore rotation, at this point, blocking rotary type trigger unit UX+1It will test circuit conducting, all blocking rotary types triggering under it
Detection circuit in unit is short-circuit；Then, according to total resistance value, the blocking rotary type trigger unit in the detection circuit be connected at this time
UX+1The corresponding relationship of location and the controlling level measured in advance and total resistance value, the material position calculated at this time are high
Degree；
Wherein, X is the serial number of blocking rotary type trigger unit, be followed successively by 1 from top to least significant end X, 2,3,4 ... n, n are positive whole
Number, UXFor X blocking rotary type trigger unit, UX+1For+1 blocking rotary type trigger unit of X.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811030205.9A CN109186712B (en) | 2018-09-05 | 2018-09-05 | Chute material level detection system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811030205.9A CN109186712B (en) | 2018-09-05 | 2018-09-05 | Chute material level detection system and method |
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| CN109186712B CN109186712B (en) | 2024-04-26 |
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| CN1034059A (en) * | 1989-01-12 | 1989-07-19 | 清华大学 | Torsion chain type level position transducer |
| CN201812720U (en) * | 2010-10-14 | 2011-04-27 | 温州展泰电气有限公司 | Wire connector |
| CN106052798A (en) * | 2016-06-30 | 2016-10-26 | 珠海格力智能装备有限公司 | Liquid level sensing device and liquid level detection method |
| TWI595524B (en) * | 2017-01-12 | 2017-08-11 | 桓達科技股份有限公司 | Paddle switch level indicator and driving mechanism thereof |
| CN208751658U (en) * | 2018-09-05 | 2019-04-16 | 中冶北方（大连）工程技术有限公司 | Chute material-level detection system |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA582915A (en) * | 1959-09-08 | L. Grostick Norman | Bin level indicator | |
| US3933041A (en) * | 1974-09-30 | 1976-01-20 | Hyer Industries, Inc. | Bulk material level measuring system |
| CN1034059A (en) * | 1989-01-12 | 1989-07-19 | 清华大学 | Torsion chain type level position transducer |
| CN201812720U (en) * | 2010-10-14 | 2011-04-27 | 温州展泰电气有限公司 | Wire connector |
| CN106052798A (en) * | 2016-06-30 | 2016-10-26 | 珠海格力智能装备有限公司 | Liquid level sensing device and liquid level detection method |
| TWI595524B (en) * | 2017-01-12 | 2017-08-11 | 桓達科技股份有限公司 | Paddle switch level indicator and driving mechanism thereof |
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|---|---|
| CN109186712B (en) | 2024-04-26 |
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