CN205397368U - Coal breakage fill chute blockage detects early warning device - Google Patents
Coal breakage fill chute blockage detects early warning device Download PDFInfo
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- CN205397368U CN205397368U CN201620155046.5U CN201620155046U CN205397368U CN 205397368 U CN205397368 U CN 205397368U CN 201620155046 U CN201620155046 U CN 201620155046U CN 205397368 U CN205397368 U CN 205397368U
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- coal
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Abstract
The utility model discloses a coal breakage fill chute blockage detects early warning device, including radio frequency admittance formula material level switch with by the parallelly connected control circuit who constitutes of five branch roads, first route coal conveyer belt opens dynamic relay's the normally open contact j1 and the working power supply series connection component of radio frequency admittance formula material level switch, the first high worth normally open contact gj1 and the time relay SJ1 series connection of a second route radio frequency admittance formula material level switch are formed, the high worth normally open contact gj2 of second of a third route radio frequency admittance formula material level switch, auxiliary relay ZJ's normally open contact ZJ and the 2nd time relay SJ2 establish ties and form, contact sj1 and auxiliary relay ZJ series connection component are closed in a fourth route time relay SJ1's the time delay of normally opening, the 5th route auxiliary relay ZJ's normally open contact zj2 and audible -visual annunciator series connection are formed. The utility model has the advantage of simple structure, simple to operate, swift.
Description
Technical field
This utility model relates to detection prior-warning device, especially relates to coal hopper coal blockage detection prior-warning device.
Background technology
Coal conveyer belt is a kind of material transfer equipment that the industries such as thermal power plant, mining and harbour commonly use, for ensureing the safe and reliable operation of conveyer belt apparatus, it is necessary to be equipped with necessary safety guard for it.And the protection of coal conveyer belt chute blockage is a kind of safety guard most basic, most important.Its effect is to realize conveyer belt and occur that coal stream is smooth at coal breakage bucket, deflector chute etc., realize early warning protection under coal stopping state, it is prevented that coal spill-over and damage equipment；It is the important leverage realizing coal conveyer belt safety, automatic operating, also effectively reduces the labor intensity of operation monitoring personnel simultaneously.Current coal conveyer belt chute blockage protection adopts Anti-rotation type material level switch, proximity switch or travel switch to complete more.Anti-rotation type material level switch need to go deep into inside coal breakage bucket when installing, installing and the difficulty of repair and maintenance is big, easily by the coal damaged in collision of bulk during operation, and the internal dust of coal breakage bucket is very big,, often there is to cause the situation of switch malfunction because output shaft is stuck in work under bad environment；The protection device being made up of proximity switch or travel switch is shorter due to detecting distance, it is common to have that service life is short, fault rate is high, error action of device is made or refused action phenomenon, has had a strong impact on the safe, properly functioning of conveyer belt.
Summary of the invention
This utility model purpose be in that provide one fall coal hopper coal blockage detection prior-warning device.
For achieving the above object, this utility model takes following technical proposals:
Described in the utility model fall coal hopper coal blockage detection prior-warning device, including the radio frequency admittance formula stuff level switch being arranged on coal breakage bucket and control circuit；Described control circuit is made up of five branch circuit parallel connections；The described normally opened contact j1 of first route coal conveyer belt starting relay and the working power of described radio frequency admittance formula stuff level switch are composed in series；The first height value normally opened contact gj1 and very first time relay SJ1 of described second route radio frequency admittance formula stuff level switch are composed in series；Described 3rd route the second height value normally opened contact gj2 of radio frequency admittance formula stuff level switch, the normally opened contact ZJ of intermediate relay ZJ and the second time relay sj 2 are composed in series；Normally opened time delay closed contact sj1 and the intermediate relay ZJ of described 4th route very first time relay SJ1 are composed in series；Normally opened contact zj2 and the audible-visual annunciator of described 5th route intermediate relay ZJ are composed in series；The normally opened time delay closed contact sj2 of described second time relay sj 2 is series in coal conveyer belt shutdown control circuit；The normally opened contact zj3 of described intermediate relay ZJ is series at the vibrosieve of coal breakage bucket and starts in control circuit.
Described radio frequency admittance formula stuff level switch is installed on the roof of coal breakage bucket, and the probe of radio frequency admittance formula stuff level switch is covered with protective cover.
This utility model advantage is in that simple in construction, easy for installation, quick.The high frequency radio wave that when coal conveyer belt runs, radio frequency admittance formula stuff level switch is launched is applied on probe, when material position changes, the probe of radio frequency admittance formula stuff level switch and chamber wall and tested coal material form admittance value and change accordingly, by monitoring the change of admittance value, and detected value and setting value compared and namely can determine whether whether to there occurs in coal breakage bucket chute blockage, or namely will appear from chute blockage fault.Radio frequency admittance formula stuff level switch exports the first height value and two on-off model of the second height value respectively, selects to send early warning signal or stopping signal, helps operator on duty to judge rapidly, takes appropriate measures, to prevent coal material from overflowing and damage equipment.
Accompanying drawing explanation
Fig. 1 is installation site structural representation of the present utility model.
Fig. 2 is control circuit schematic diagram of the present utility model.
The normally opened time delay closed contact sj2 that Fig. 3 is the second time relay sj 2 described in the utility model is series at the wiring schematic diagram in coal conveyer belt shutdown control circuit.
The normally opened contact zj3 that Fig. 4 is intermediate relay ZJ described in the utility model is series at the wiring schematic diagram in the vibrosieve startup control circuit of coal breakage bucket.
Detailed description of the invention
As Figure 1-4, described in the utility model fall coal hopper coal blockage detection prior-warning device, including the radio frequency admittance formula stuff level switch 2 being arranged on coal breakage bucket 1 roof and the control circuit being arranged in electric cabinet 3；The probe 4 of radio frequency admittance formula stuff level switch 2 is covered with protective cover 5, and the effect of protective cover 5 is to prevent coal stream from damaging probe 4, and probe 4 is just to coal material 6 below.
Described control circuit is formed by five branch roads are parallel with one another；The normally opened contact j1 of starting relay and the working power 8 of radio frequency admittance formula stuff level switch 2 of first route coal conveyer belt 7 are composed in series；The first height value normally opened contact gj1 and very first time relay SJ1 of second route radio frequency admittance formula stuff level switch 2 are composed in series；3rd route the second height value normally opened contact gj2 of radio frequency admittance formula stuff level switch 2, the normally opened contact ZJ of intermediate relay ZJ and the second time relay sj 2 are composed in series；Normally opened time delay closed contact sj1 and the intermediate relay ZJ of the 4th route very first time relay SJ1 are composed in series；Normally opened contact zj2 and the audible-visual annunciator 9 of the 5th route intermediate relay ZJ are composed in series；The normally opened time delay closed contact sj2 of the second time relay sj 2 is series in the shutdown control circuit of coal conveyer belt 7；The normally opened contact zj3 of intermediate relay ZJ is series at the vibrosieve of coal breakage bucket 1 and starts in control circuit.
During utility model works,
First the working value of radio frequency admittance formula stuff level switch 1 is set according to the requirement of on-the-spot practical situation and user, it may be assumed that the first height value position 10 and the second height value position 11 that the probe 4 of radio frequency admittance formula stuff level switch 1 detects.
When the blocking of coal breakage bucket 1 interior conduit causes coal material 6 to be accumulated to the first height value position 10, time relay sj 1 and intermediate relay ZJ start audible-visual annunciator 9 and send early warning signal, and the vibrosieve simultaneously starting coal breakage bucket 1 is accelerated coal material 6 and passed through.If the material level of coal material 6 continuously rises to the second height value position 11; then illustrate that the coal material 6 in pipeline is piled up and reach dangerous values; at this moment then send halt instruction by time relay sj 2, stop coal conveyer belt 7 and run, in case coal material 6 overflows damage equipment.When coal conveyer belt 7 runs, the normally opened contact j1 Guan Bi of the starting relay of coal conveyer belt 7, connect the working power 8 of radio frequency admittance formula stuff level switch 2, radio frequency admittance formula stuff level switch 2 is started working.When coal conveyer belt 7 is out of service, the normally opened contact j1 of the starting relay of coal conveyer belt 7 disconnects, and radio frequency admittance formula stuff level switch 2 quits work, and so can extend the service life of radio frequency admittance formula stuff level switch 2.
Early warning signal and halt instruction all require over time relay sj 1 and SJ2 and just can send through certain time-delay (3～5 seconds and time adjustable), to avoid the bulk foreign material contained in coal material 6 to cause stuff level switch malfunction.
Claims (2)
1. the coal hopper coal blockage detection prior-warning device that falls, it is characterised in that: include the radio frequency admittance formula stuff level switch and the control circuit that are arranged on coal breakage bucket；Described control circuit is made up of five branch circuit parallel connections；The described normally opened contact j1 of first route coal conveyer belt starting relay and the working power of described radio frequency admittance formula stuff level switch are composed in series；The first height value normally opened contact gj1 and very first time relay SJ1 of described second route radio frequency admittance formula stuff level switch are composed in series；Described 3rd route the second height value normally opened contact gj2 of radio frequency admittance formula stuff level switch, the normally opened contact ZJ of intermediate relay ZJ and the second time relay sj 2 are composed in series；Normally opened time delay closed contact sj1 and the intermediate relay ZJ of described 4th route very first time relay SJ1 are composed in series；Normally opened contact zj2 and the audible-visual annunciator of described 5th route intermediate relay ZJ are composed in series；The normally opened time delay closed contact sj2 of described second time relay sj 2 is series in coal conveyer belt shutdown control circuit；The normally opened contact zj3 of described intermediate relay ZJ is series at the vibrosieve of coal breakage bucket and starts in control circuit.
2. according to claim 1 fall coal hopper coal blockage detection prior-warning device, it is characterised in that: described radio frequency admittance formula stuff level switch is installed on the roof of coal breakage bucket, and the probe of radio frequency admittance formula stuff level switch is covered with protective cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620155046.5U CN205397368U (en) | 2016-03-02 | 2016-03-02 | Coal breakage fill chute blockage detects early warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620155046.5U CN205397368U (en) | 2016-03-02 | 2016-03-02 | Coal breakage fill chute blockage detects early warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205397368U true CN205397368U (en) | 2016-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620155046.5U Expired - Fee Related CN205397368U (en) | 2016-03-02 | 2016-03-02 | Coal breakage fill chute blockage detects early warning device |
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| CN (1) | CN205397368U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106125707A (en) * | 2016-08-30 | 2016-11-16 | 祖传琦 | Thermal power plant coal conveyer belt runs intelligent aid system |
| CN110053944A (en) * | 2019-05-22 | 2019-07-26 | 合肥市信同信息科技有限公司 | A kind of coal conveyer belt feed opening drop point detection system of view-based access control model and laser |
| CN111776664A (en) * | 2020-07-14 | 2020-10-16 | 上海烟草集团有限责任公司 | Tobacco blocking early warning method and device |
-
2016
- 2016-03-02 CN CN201620155046.5U patent/CN205397368U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106125707A (en) * | 2016-08-30 | 2016-11-16 | 祖传琦 | Thermal power plant coal conveyer belt runs intelligent aid system |
| CN106125707B (en) * | 2016-08-30 | 2018-08-17 | 祖传琦 | The intelligent auxiliary system of thermal power plant coal conveyer belt operation |
| CN110053944A (en) * | 2019-05-22 | 2019-07-26 | 合肥市信同信息科技有限公司 | A kind of coal conveyer belt feed opening drop point detection system of view-based access control model and laser |
| CN111776664A (en) * | 2020-07-14 | 2020-10-16 | 上海烟草集团有限责任公司 | Tobacco blocking early warning method and device |
| CN111776664B (en) * | 2020-07-14 | 2022-06-03 | 上海烟草集团有限责任公司 | Tobacco blocking early warning method and device |
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Legal Events
| 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 |
Granted publication date: 20160727 Termination date: 20170302 |
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| CF01 | Termination of patent right due to non-payment of annual fee |