CN202229809U - Mechanical level meter - Google Patents
Mechanical level meter Download PDFInfo
- Publication number
- CN202229809U CN202229809U CN2011203337536U CN201120333753U CN202229809U CN 202229809 U CN202229809 U CN 202229809U CN 2011203337536 U CN2011203337536 U CN 2011203337536U CN 201120333753 U CN201120333753 U CN 201120333753U CN 202229809 U CN202229809 U CN 202229809U
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- CN
- China
- Prior art keywords
- level meter
- weight
- stepper motor
- control circuit
- heavy object
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a mechanical level meter. A control circuit drives a stepper motor to run. A winding drum rotates a rope below under the drive of the stepper motor. A heavy object is arranged below the rope. The bottom of the heavy object is provided with a pressure sensor. When the heavy object touches a material, a control terminal detects a signal which is transmitted by the sensor, and accurately judges the position of the material. The level meter can accurately measure the position of the material in a severe environment, works stably, has a simple and compact structure and low construction cost, and is suitable for actual field application.
Description
Affiliated technical field
The utility model is a kind of measurement mechanism that detects colliery and coal preparation plant coal store material position that is applicable to.
Background technology
At present, the method that coal store material position is measured by most of collieries and coal preparation plant has two kinds: a kind of is the artificial tape measuring that uses, and another kind is to use ultrasonic material level meter.Along with development of science and technology, some professional range sensors have appearred, its principle of work is through the short especially light pulse of emission, and measures this light pulse from being transmitted into time of being returned by reflection object, through the survey time calculate and object between distance.Because the coal store dust is bigger, ultrasound wave and light pulse are prone to the casual emission on coal grain surface, make ultrasonic material level meter and range sensor can't use, and the artificial tape measuring that uses though can achieve the goal, have strengthened workman's workload and danger at all.
Summary of the invention
In order to solve the deficiency that above-mentioned colliery and coal preparation plant use coal store material location measurement method at present, the utility model provides a kind of mechanical level meter, this level meter does not receive that dust influences in the coal store, can accurately measure coal store material position.
The utility model solves the technical scheme that its technical matters adopted: total system mainly is made up of control circuit and drive unit two parts; Drive unit mainly is made up of stepper motor, reel and weight; Wherein the lower end of weight is connected to pressure transducer; When weight touched material, control end promptly can detect the variation of signal, thereby accurately judged the material position.Weight in the coal store is on the horizontal line of top, storehouse when just having begun, and is made as zero point with this, under the weight pressure transducer is housed.When carrying out the material position measurement; Control circuit sends the rotation of pulse signal control step motor, and stepper motor drives reel through shaft coupling and rotates, and then weight descends under the effect of natural gravity; When weight touches material; Pressure transducer pressure under the weight can change, and control circuit detects and stops transponder pulse after pressure changes, and stepper motor also stops operating thereupon; Note the umber of pulse that control circuit launches through pre-set programs and can calculate the material position of this moment, thereby reach the purpose of measuring the thing position.After mensuration finishes, weight is resetted according to pre-set programs through the control circuit drive stepping motor once more, wait for next time and measure.The effect that weight is set is to make rope can be in tight state constantly, reduces measuring error.
The beneficial effect of the utility model is, can in rugged environment, measure material position and working stability, measure accurately, and also the apparatus structure compact, cheap, be fit to on-the-spot practical application.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the integral layout figure of the utility model.
Fig. 2 is the drive unit synoptic diagram.
Fig. 3 is the control circuit block diagram.
1. thrust bearings among the figure, 2. reel, 3. support, 4. shaft coupling, 5. stepper motor, 6. weight, 7. pressure transducer.
Embodiment
In Fig. 1, weight in the storehouse (6) originally was in top, storehouse horizontal level, when measuring beginning; Control circuit drives reel (2) through drive stepping motor (5) through shaft coupling (4) and rotates; Weight (6) beginning that is connected on the reel rope descends under the effect of natural gravity, and when touching material, pressure transducer (7) promptly can detect the variation of pressure; Control circuit detects the signal that pressure transducer sends; Stop to stepper motor (5) transponder pulse, this moment, weight remained static, and can calculate the material position of this moment then through pre-set programs.
In Fig. 2; The effect of thrust bearing (1) is that reel (2) is fixed on the support (3); Can only rotate, the effect of shaft coupling (4) is that two axles (main drive shaft and driven shaft) that are used for connecting on stepper motor (5) and the reel (2) make it common rotation to transmit the mechanical component of moment of torsion.
In Fig. 3, be the principle of work synoptic diagram of The whole control system, control circuit is supplied power by power supply; The running of control step motor; The pressure transducer that is placed on the weight lower end descends thereupon, and when arriving the detection position, control circuit will detect the electric signal that pressure transducer produces owing to the variation of pressure; The control step motor stops operating and notes the umber of pulse of issuing stepper motor this moment, can obtain required data through pre-set programs thus.
Claims (1)
1. mechanical level meter; Be used for the mensuration of material position in colliery and the coal preparation plant's coal store, it is characterized in that: total system mainly is made up of control circuit and drive unit two parts, and drive unit mainly is made up of stepper motor, reel and weight; Wherein the lower end of weight is connected to pressure transducer; When weight touched material, control end promptly can detect the variation of signal, thereby accurately judged the material position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203337536U CN202229809U (en) | 2011-09-07 | 2011-09-07 | Mechanical level meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203337536U CN202229809U (en) | 2011-09-07 | 2011-09-07 | Mechanical level meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202229809U true CN202229809U (en) | 2012-05-23 |
Family
ID=46080393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203337536U Expired - Fee Related CN202229809U (en) | 2011-09-07 | 2011-09-07 | Mechanical level meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202229809U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560691A (en) * | 2017-08-17 | 2018-01-09 | 沈阳铝镁设计研究院有限公司 | A kind of fresh aluminum oxide storehouse material-level detection system |
-
2011
- 2011-09-07 CN CN2011203337536U patent/CN202229809U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560691A (en) * | 2017-08-17 | 2018-01-09 | 沈阳铝镁设计研究院有限公司 | A kind of fresh aluminum oxide storehouse material-level detection system |
| CN107560691B (en) * | 2017-08-17 | 2020-03-20 | 沈阳铝镁设计研究院有限公司 | Fresh alumina storehouse material level detecting system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20120907 |