CN201666805U - Charge level detector used in silos - Google Patents
Charge level detector used in silos Download PDFInfo
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- CN201666805U CN201666805U CN2010201665283U CN201020166528U CN201666805U CN 201666805 U CN201666805 U CN 201666805U CN 2010201665283 U CN2010201665283 U CN 2010201665283U CN 201020166528 U CN201020166528 U CN 201020166528U CN 201666805 U CN201666805 U CN 201666805U
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- charge level
- detector switch
- drive motor
- serially connected
- wire rope
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Abstract
The utility model discloses a charge level detector used in silos which belongs to the field of measuring and includes a heavy bob arranged in a silo. The charge level detector used in silos is characterized by being provided with a roller, a drive motor, a steel wire twisted on the roller and capable of stretching/retracting with the rotation of the roller, a weightlessness mechanism and a screw box used for controlling the drive motor to rotate positively and negatively; the heavy bob after being connected with the steel wire is arranged in the silo; the drive motor is connected with the roller, and is simultaneously connected with the threaded screw of the screw box; a threaded copper roller is arranged on a screw; a first detection switch and a second detection switch are arranged in the traveling scope of the threaded copper roller; a third detection switch is arranged in the weightlessness mechanism; and the first detection switch, the second detection switch and the third detection switch are connected with the control circuit of the drive motor. The charge level detector used in silos is suitable for detecting the charge levels of silos which do not participate in production control and do not require high precision in particular, can greatly reduce the purchasing expense and maintenance cost, and can be broadly applied to the detecting/measuring fields of the charge levels of various solid and powder materials.
Description
Technical field
The utility model belongs to fields of measurement, relates in particular to a kind of pick-up unit that material is measured in the container that is used for.
Background technology
The method that is used to both at home and abroad to measure charge level in the silo at present mainly is divided into two big classes usually: a class is non-method for continuous measuring, and another kind of is continuous mode method.
The non-continuous method mainly contains electrode, radiation and capacitance method.Commonly used is capacitance method, can it be on September 27th, 2006 specifically with reference to the day for announcing, Granted publication number is the Chinese utility model patent of CN 2821632Y " inductance type is from resetting level-sensing device ", it is by axle sleeve, rotating shaft, fixing suspension bracket, inductive switch, swing arm is formed, axle sleeve is connected with fixing suspension bracket, the rotating shaft two ends are embedded in the axle sleeve, inductive switch is installed in the fixedly bottom of suspension bracket, in a fixing side of suspension bracket baffle plate is arranged, the coboundary of baffle plate is fixedlyed connected with rotating shaft, and the bottom surfaces of baffle plate has two swing arms to a fixing side of suspension bracket, is symmetrically distributed in the fixedly both sides, below of suspension bracket, their end is fixedlyed connected with baffle plate, the other end is equipped with balancing weight, and a sensing chip, sensing chip horizontal positioned are arranged between two swing arms, vertical with two swing arms, be positioned at the below of inductive switch.
This technical scheme is judged having or not of material by change in dielectric constant around the measuring sonde.But, in real work,, thereby make it misoperation occur because the variation of factors such as dust, moisture can cause the variation of specific inductive capacity.
It is several that continuous mode method mainly contains ultrasound wave, radar and weight method etc.As a kind of example, can consult the day for announcing is on October 23rd, 2002, Granted publication number is the Chinese invention patent " linear frequency-modulation continuous wave radar feed location instrument and measuring method thereof " of CN 1093257C, comprises microwave subsystem and signal Processing subsystem on its structure.The microwave subsystem contains the microwave source of being with frequency modulator, circulator, emitting antenna and mixing/in put device.The signal Processing subsystem contains wave filter, programmable amplifier, CPU treatment circuit and keyboard and display.Measuring method is at first to measure target echo signal and the local oscillation signal that comprises target range R, draws difference frequency f
r, try to achieve target range R again, promptly obtain material level.
Ultrasound wave and radar level gauge can be accomplished the measuring accuracy height in continuous mode method, and dynamic response is fast.But often run into interference such as noise, voltage ripple of power network, heavy-duty motor start and stop, electromagnetic induction and sudden power, incoming line in actual use, cause level-sensing device out of control in program process.In order to improve the detection quality, need on hardware, to take interference protection measure, each signal wire to add photoelectricity and isolate, microcomputer (control box) adds anti-interference rejector; In measurement, also can be subjected to the influence of raw meal particle size inequality, dust etc. in the storehouse in addition, exist and measure the blind area.
The weight method needs photoelectric encoder, PLC controller, sensor, special-purpose secondary instrument supporting, and buying and maintenance cost are also higher.
Some are for participating in the silo charge level of producing metering or control directly in factory's actual production, and producer generally adopts above two class level-sensing devices to measure as required, and required buying and maintenance cost are all very high.And do not participate in the silo charge level of production control directly for some, and storing as raw material, semi-manufacture and finished product and waste residue, its function is as long as show roughly situation of charge level, as adopts above two class level-sensing devices to measure, and is very non-remunerative.For the material surface measurement under this less demanding occasion, also there is not a kind of simple in structure, pick-up unit that cost is low in the market.
The utility model content
Technical problem to be solved in the utility model provides a kind of charge level pick-up unit in the silo that is used for, it is simple for structure, configuration and maintenance cost are cheap, be particularly suitable for the solid shape of various warehouses, the measurement of powdery charge level, can reach under the same measurement purpose situation, be particularly suitable for some and do not participate in production control directly and do not need the high silo charge level of precision to detect, can reduce buying expenses and maintenance cost greatly.
The technical solution of the utility model provides a kind of charge level pick-up unit in the silo that is used for, comprise the weight that is arranged in the feed bin, it is characterized in that: be provided with that drive motor, that a cylinder, is used for head roll is wrapped on the cylinder and can with cylinder rotate weightless mechanism and that the wire rope, of stretching/contracting be used to change the wire rope direction be used for the controlling and driving motor just/the screw mandrel case of antiport; Described weight overhangs after wire rope connects and is arranged in the feed bin; Described wire rope one end is connected with weight, and the other end is connected with cylinder after the changed course of weightless mechanism; Described cylinder is connected with driving motor; Described driving motor is connected with the threaded screw rod of screw mandrel case simultaneously; The sliding order of screw thread copper is set on the screw mandrel in described screw mandrel case, makes in screw thread copper cunning first and second detector switches are set respectively in the stroke range; In weightless mechanism the 3rd detector switch is set; Described first, second is connected with the The driving motor control circuit with the 3rd detector switch.
Its described weightless mechanism comprises wire rope changed course pulley and the 3rd detector switch at least, constitutes pressure between described the 3rd detector switch and the wire rope and contacts-circuit on/off structural relation.
The above-mentioned cylinder and the reducer output shaft of driving motor are affixed.
The reducer output shaft of above-mentioned driving motor is connected with the screw mandrel principal and subordinate of screw mandrel case.
The first and second above-mentioned detector switches are arranged on beginning, the end that screw thread copper cunning makes stroke range.
Further, above-mentioned first, second and the 3rd detector switch are pressure detection switch, mechanical limit switch or electric approximated position detector switch.
Concrete, the normally opened contact of above-mentioned first detector switch is serially connected in the drive motor rising control loop; The normally opened contact of above-mentioned second detector switch is serially connected in the drive motor decline control loop; The normally opened contact of above-mentioned the 3rd detector switch is serially connected in the drive motor decline control loop.
Further, the normally opened contact of above-mentioned first detector switch is serially connected in the high high charge level signal circuit, and is serially connected in the rising control loop of drive motor through the normally closed contact of first auxiliary reclay; The normally opened contact of above-mentioned second detector switch is serially connected in the low material level signal circuit, and is serially connected in the drive motor decline control loop through the normally closed contact of second auxiliary reclay; The normally opened contact of above-mentioned the 3rd detector switch is serially connected in the high charge level signal circuit, and is serially connected in the drive motor decline control loop through the normally closed contact of the 3rd auxiliary reclay.
Compared with the prior art, the utility model has the advantages that:
1. adopted conventional mechanical to manufacture and design, so this equipment performance is reliable, and is easy to control, be particularly suitable for the solid shape of various warehouses, the measurement of powdery charge level;
2. the problems such as industrial existing level-sensing device apparatus expensive, complex structure and inconvenient maintenance that are directed to have been carried out the improvement of design proposal, and purchasing with maintenance cost of whole device is cheap.
Description of drawings
Fig. 1 is an integral mechanical structure synoptic diagram of the present utility model;
Fig. 2 is weight the 3rd detector switch view in the weightless mechanism when not running into charge level;
Fig. 3 is weight the 3rd detector switch view in the weightless mechanism when running into charge level;
Fig. 4 is that the sliding order of leading screw case copper is slided to the first detector switch position view;
Fig. 5 is that the sliding order of leading screw case copper is slided to the second detector switch position view;
Fig. 6 is this device operation circuit figure.
1 is feed bin among the figure, and 2 is weight, and 3 is wire rope, and 4 is weightless mechanism, and 5 are the changed course pulley, and 6 be cylinder, and 7 be drive motor, and 8 is the screw mandrel case, and SW1, SW2, SW3 are respectively first, second and the 3rd detector switch, and TH is that screw thread copper cunning makes.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Among Fig. 1, the technical program provides a kind of charge level pick-up unit in the silo that is used for, it comprises the weight 2 that is arranged in the feed bin 1, and its improvement is: be provided with that drive motor 7, that a cylinder 6, is used for head roll is wrapped on the cylinder and can with cylinder rotate weightless mechanism 4 and that the wire rope 3, of stretching/contracting be used to change the wire rope direction be used for the controlling and driving motor just/the screw mandrel case 8 of antiport; Described weight 2 overhangs after wire rope 3 connects and is arranged in the feed bin 1; Described wire rope one end is connected with weight, and the other end is connected with cylinder 6 after 4 changed courses of weightless mechanism; Described cylinder is connected with driving motor 7; Described driving motor is connected with the threaded screw rod of screw mandrel case 8 simultaneously.
Weightless mechanism comprises wire rope changed course pulley 5 and the 3rd detector switch (not shown) at least.
Wherein, cylinder is connected with driving motor, and driving motor is connected with the threaded screw rod of screw mandrel case simultaneously.
Further, the reducer output shaft of cylinder and driving motor is affixed.
The reducer output shaft of driving motor is connected with the screw mandrel principal and subordinate of screw mandrel case.
The material level of its feed bin is according to the height of charge level, can be divided into 0, L (50%), H (50～80%), HH (80%) and 100% several class.
Do not participate in production control directly and do not need the high silo charge level of precision to detect owing to this device mainly is applicable to some, thus above-mentioned rough division has been adopted in the division of charge level in the feed bin, to reduce the complexity of control circuit.
Complete machine course of action summary: during actual the use, start drive motor " decline " control knob, the direct motor drive wire rope drives weight and is descended by the high high charge level of HH, as material level in this moment silo between high charge level H (50%-80%), weight is descended on H high charge level charge level by the high high charge level of HH, and wire rope is in to lose to be tightened/tension state, causes being arranged on the 3rd detector switch action in the weightless mechanism, motor shuts down, and " rope pine " pilot lamp is bright on the panel; Suppose that material level is less than 50% in the silo, the direct motor drive wire rope drives weight to be continued to descend by the H high charge level, when weight drops to low material level position L (setting buys securities with all one's capital 50%), the sliding order of copper slided to second detector switch in this moment and the screw mandrel case that the driving motor speed reduction unit is connected, make its action, the output corresponding electric signal shuts down drive motor, and low material level pilot lamp HW2 is bright on the panel simultaneously.
At this moment, start drive motor and start " rising " button, when direct motor drive wire rope drive weight rises to the high high charge level of HH by the low material level of L, the sliding order of the interior copper of screw mandrel case this moment is slided to first detector switch, make its action, the output corresponding electric signal shuts down drive motor, and high high charge level pilot lamp HW1 is bright on the panel simultaneously.
Then, weight rises to the HH position, waits for high some place in the storehouse, its objective is when reinforced in case bury hammer.
Among Fig. 2, when weight 2 is not run into charge level, its deadweight is with wire rope 3 tensions, this moment be arranged in the weightless mechanism the 3rd detector switch SW3 because of with wire rope between the formation pressure contact-circuit on/off structural relation, under the effect of wire rope, the normally opened contact of the 3rd detector switch SW3 is in closure state.
Among Fig. 3, when weight 2 was run into charge level, wire rope 3 was in relaxed state, was arranged at the 3rd detector switch SW3 in the weightless mechanism and lost with the pressure type of wire rope and contact, and its normally opened contact is in disconnection/open mode.
Among Fig. 4, the first and second detector switch SW1, SW2 are arranged on beginning, the end (being equivalent to the left and right end among the figure) that screw thread copper cunning makes the TH stroke range.
The screw mandrel case and the motor reducer of this device have master slave relation, and when the speed reduction unit of driving motor was just changeing, TH copper cunning made also forward operation of assembly in the screw mandrel case; If the counter-rotating of the speed reduction unit of driving motor, TH copper cunning makes also inverted running of assembly in the screw mandrel case.
At screw mandrel case internal fixation two detector switch SW1, SW2 (Adjustable Range) are arranged, the effect of the first detector switch SW1 is to detect silo high high charge level position HH (setting buys securities with all one's capital 80%) signal, and the effect of the second detector switch SW2 is to detect low material level position L (setting the buys securities with all one's capital 50%) signal of silo.
When making TH, screw thread copper cunning moves to an end of stroke range when (illustrating with the left side among the figure), contact or touch the first detector switch SW1, the normally opened contact closure of first detector switch then, export corresponding position state signal, thus feed bin charge level position signalling is converted to corresponding electric signal and output, the operation of controlling and driving motor, and then the running of control index drum, the final VTOL (vertical take off and landing) run location that is arranged in the weight of feed bin by wire rope control.
Among Fig. 5, when screw thread copper cunning makes TH move to the other end (among the figure with right side signal) of stroke range, contact or touch the second detector switch SW2, then the normally opened contact closure of second detector switch is exported corresponding position state signal.
All the other same Fig. 4.
Above-mentioned first, second and the 3rd detector switch are pressure detection switch, mechanical limit switch or electric approximated position detector switch.
Because the normally opened contact of first detector switch is serially connected in the drive motor rising control loop, the normally opened contact of second detector switch is serially connected in the drive motor decline control loop, the normally opened contact of the 3rd detector switch is serially connected in the drive motor decline control loop, so by first, whether run location and wire rope that the second and the 3rd detector switch detects the sliding order of screw thread copper respectively are in tensioning state, can learn weight is positioned at which material level scope of feed bin, thereby can be succinct, generally obtain charge level position in the feed bin, realize the solid shape of various warehouses, the measurement of powdery charge level.
Among Fig. 6, the normally opened contact of the first detector switch SW1 is serially connected in the high high charge level signal circuit, and is serially connected among the rising control loop YQ1 of drive motor through the normally closed contact KAR1_1 of the first auxiliary reclay KAR1; The normally opened contact of the second detector switch SW2 is serially connected in the low material level signal circuit, and is serially connected among the drive motor decline control loop YQ2 through the normally closed contact KAR2_1 of the second auxiliary reclay KAR2; The normally opened contact of the 3rd detector switch SW3 is serially connected in the high charge level signal circuit, and is serially connected in the drive motor decline control loop through the normally closed contact KAR3_1 of the 3rd auxiliary reclay KAR3.
During real work, press the SF2 start button, decline pilot relay coil YQ2 gets electric self-insurance, drive motor energising running this moment, drive wire rope and drive weight by the high high charge level decline of HH, if the interior material level of silo this moment is high charge level H (buying securities with all one's capital between the 50%-80%), weight is descended on H high charge level charge level by the high high charge level of HH, weightless the 3rd detector switch SW3 of mechanism action, SW3 " rope pine " switch by often open become normally closed, auxiliary reclay coil KAR3 gets, its normally closed contact KAR3_1 that is connected on the YQ2 wire loop often becomes and opens, decline pilot relay coil YQ2 dead electricity, and motor shuts down, " rope pine " pilot lamp HW0 is bright simultaneously, illustrates that the interior charge level of silo is at the high charge level of H (buying securities with all one's capital between the 50%-80%); If material level is less than 50% in the silo, the direct motor drive wire rope drives weight and continues test by the H high charge level, when weight drops to low material level position L (setting buys securities with all one's capital 50%), there is in the screw mandrel case of master slave relation the sliding order of copper slide with the driving motor speed reduction unit to the second detector switch SW2 position, make its action, motor is shut down, SW2 " low material level " switch motion, its contact by often open become normally closed, auxiliary reclay KAR2 coil gets, its normally closed contact KAR2_1 that is connected on the YQ2 wire loop often becomes and opens, pilot relay YQ2 coil losing electricity, motor shuts down, and " low material level " pilot lamp HW2 is bright, illustrates that the charge level in the silo hangs down charge level (buying securities with all one's capital below 50%) at L.
And then startup SF1 " rising " button, pilot relay YQ1 coil gets electric self-insurance, motor D energising running this moment, D drives the level-sensing device wire rope and drives weight by the low material level rising of L, in case when rising to the high high charge level of HH (completely expecting 80%), the sliding order of the interior copper of screw mandrel case this moment is slided to the first detector switch SW1 position, make its SW1 action, the control motor shuts down SW1 " high charge level " switch motion, its contact by often open become normally closed, auxiliary reclay KAR1 coil gets electric, and its normally closed contact KAR1_1 that is connected on pilot relay YQ1 wire loop often becomes and opens the YQ1 coil losing electricity, motor shuts down, simultaneously " high high charge level " pilot lamp HW1 is bright.
Weight rises to the HH position, and purpose is to wait for when the inherence, storehouse is reinforced in case bury hammer.
This device not only manually can be operated automatically and also can operate equally, and present principles figure left-hand broken line partly is to draw from automatic part, KA1, KA2, is that this level-sensing device of Long-distance Control rises, decline contact KAS points out this device for controlling automatically.
Because this figure adopts national standard drawing form and mask method, those skilled in the art all can have no the understanding of contrary opinion ground and understand its implication and annexation, is easy to draw the control principle and the course of action of The whole control circuit, so be not described in detail in this.
Because the utility model has adopted conventional mechanical to manufacture and design, therefore this equipment performance is reliable, and be easy to control, be particularly suitable for the solid shape of various warehouses, the measurement of powdery charge level, simultaneously, it is directed to industrial existing level-sensing device apparatus expensive, problem such as complex structure and inconvenient maintenance has been carried out the improvement of design proposal, purchasing with maintenance cost of whole device is cheap, be particularly suitable for the solid shape of various warehouses, the measurement of powdery charge level, can reach under the same measurement purpose situation, be particularly suitable for some and do not participate in production control directly and do not need the high silo charge level of precision to detect, can reduce buying expenses and maintenance cost greatly.
The utility model can be widely used in the detection/fields of measurement of various solid shapes, granular material material level.
Claims (8)
1. one kind is used for charge level pick-up unit in the silo, comprises the weight that is arranged in the feed bin, it is characterized in that:
Be provided with that drive motor, that a cylinder, is used for head roll is wrapped on the cylinder and can with cylinder rotate weightless mechanism and that the wire rope, of stretching/contracting be used to change the wire rope direction be used for the controlling and driving motor just/the screw mandrel case of antiport;
Described weight overhangs after wire rope connects and is arranged in the feed bin;
Described wire rope one end is connected with weight, and the other end is connected with cylinder after the changed course of weightless mechanism;
Described cylinder is connected with driving motor;
Described driving motor is connected with the threaded screw rod of screw mandrel case simultaneously;
The sliding order of screw thread copper is set on the screw mandrel in described screw mandrel case, makes in screw thread copper cunning first and second detector switches are set respectively in the stroke range;
In weightless mechanism the 3rd detector switch is set;
Described first, second is connected with the The driving motor control circuit with the 3rd detector switch.
2. be used for charge level pick-up unit in the silo according to claim 1 is described, it is characterized in that described weightless mechanism comprises wire rope changed course pulley and the 3rd detector switch at least, constitute pressure between described the 3rd detector switch and the wire rope and contact-circuit on/off structural relation.
3. be used for charge level pick-up unit in the silo according to claim 1 is described, it is characterized in that the reducer output shaft of described cylinder and driving motor is affixed.
4. be used for charge level pick-up unit in the silo according to claim 1 is described, it is characterized in that the reducer output shaft of described driving motor is connected with the screw mandrel principal and subordinate of screw mandrel case.
5. be used for charge level pick-up unit in the silo according to claim 1 is described, it is characterized in that described first and second detector switches are arranged on beginning, end that screw thread copper cunning makes stroke range.
6. be used for charge level pick-up unit in the silo according to claim 1 is described, it is characterized in that described first, second and the 3rd detector switch are pressure detection switch, mechanical limit switch or electric approximated position detector switch.
7. be used for charge level pick-up unit in the silo according to claim 1 is described, it is characterized in that the normally opened contact of described first detector switch is serially connected in the drive motor rising control loop; The normally opened contact of described second detector switch is serially connected in the drive motor decline control loop; The normally opened contact of described the 3rd detector switch is serially connected in the drive motor decline control loop.
8. be used for charge level pick-up unit in the silo according to claim 7 is described, the normally opened contact that it is characterized in that described first detector switch is serially connected in the high high charge level signal circuit, and is serially connected in the rising control loop of drive motor through the normally closed contact of first auxiliary reclay; The normally opened contact of described second detector switch is serially connected in the low material level signal circuit, and is serially connected in the drive motor decline control loop through the normally closed contact of second auxiliary reclay; The normally opened contact of described the 3rd detector switch is serially connected in the high charge level signal circuit, and is serially connected in the drive motor decline control loop through the normally closed contact of the 3rd auxiliary reclay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201665283U CN201666805U (en) | 2010-04-21 | 2010-04-21 | Charge level detector used in silos |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201665283U CN201666805U (en) | 2010-04-21 | 2010-04-21 | Charge level detector used in silos |
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| Publication Number | Publication Date |
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| CN201666805U true CN201666805U (en) | 2010-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2010201665283U Expired - Fee Related CN201666805U (en) | 2010-04-21 | 2010-04-21 | Charge level detector used in silos |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102992049A (en) * | 2012-12-28 | 2013-03-27 | 江西稀有稀土金属钨业集团有限公司 | Ore full-bin warning device |
| CN104741557A (en) * | 2013-12-26 | 2015-07-01 | 上海梅山钢铁股份有限公司 | Slab connection detecting device of continuous casting slabs and detecting method thereof |
| CN105891048A (en) * | 2016-06-08 | 2016-08-24 | 南京三良才智能机械有限公司 | Density instrument for testing density of potassium superoxide powder |
| CN113526175A (en) * | 2021-07-12 | 2021-10-22 | 宁波大地化工环保有限公司 | Full-automatic powder bin material level real-time display device |
-
2010
- 2010-04-21 CN CN2010201665283U patent/CN201666805U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102992049A (en) * | 2012-12-28 | 2013-03-27 | 江西稀有稀土金属钨业集团有限公司 | Ore full-bin warning device |
| CN104741557A (en) * | 2013-12-26 | 2015-07-01 | 上海梅山钢铁股份有限公司 | Slab connection detecting device of continuous casting slabs and detecting method thereof |
| CN105891048A (en) * | 2016-06-08 | 2016-08-24 | 南京三良才智能机械有限公司 | Density instrument for testing density of potassium superoxide powder |
| CN113526175A (en) * | 2021-07-12 | 2021-10-22 | 宁波大地化工环保有限公司 | Full-automatic powder bin material level real-time display device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101208 Termination date: 20160421 |