CN105600363A - Coal mine dust suppression system - Google Patents
Coal mine dust suppression system Download PDFInfo
- Publication number
- CN105600363A CN105600363A CN201510707809.2A CN201510707809A CN105600363A CN 105600363 A CN105600363 A CN 105600363A CN 201510707809 A CN201510707809 A CN 201510707809A CN 105600363 A CN105600363 A CN 105600363A
- Authority
- CN
- China
- Prior art keywords
- signal
- resistance
- positive
- emitting diode
- light emitting
- 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.)
- Pending
Links
Landscapes
- Electronic Switches (AREA)
Abstract
The invention provides a coal mine dust suppression system, comprising a detection device used for detecting the state of a conveyer, a signal conversion device connected with the detection device and used for generating a first control signal according to the state of the conveyer, a controller connected with the signal conversion device and used for generating a second control signal according to the first control signal, and a switch connected with the controller, a spraying device and a water supply device and used for being opened to closed according to the second control signal, and thus connecting and disconnecting the spraying device and the water supply device, so as to realize that the spraying device starts mist spray when the conveyer is in a loaded state and the spraying device stops mist spray when the conveyer is in an unloaded state. Excessive spraying water can be prevented from entering a coal flow, thus not only improving the quality of the coal flow, but also saving water resources.
Description
Technical field
The present invention relates to dust falling in coal mining technology, relate in particular to a kind of dust falling in coal mining system.
Background technology
Dust suppression in mine has become a major issue in mine production and disaster prevention, Coal Transportation at presentThe main tool of coal is belt conveyer, and belt conveyer is the main aspect that colliery mine dust produces.It how to be effectively a difficult problem of puzzlement depositing dust to belt depositing dust.
Current existing belt atomizing de-dusting technology, in belt-conveying process, by sprayer unit continue toBelt water spray can produce a large amount of invalid spray water and enter coal flow system in depositing dust process, has reduced ature of coal,And waste water resource.
Summary of the invention
The invention provides a kind of dust falling in coal mining system, can in depositing dust process, improve ature of coal, and saveWater resource.
The invention provides a kind of dust falling in coal mining system, comprising:
Checkout gear, chromacoder, controller, switch and sprayer unit;
Described checkout gear, for detection of the state of transporter;
Described chromacoder, is connected with described checkout gear, for according to described transporterState generates the first control signal;
Described controller, is connected with described chromacoder, for controlling letter according to described firstNumber generate the second control signal;
Described switch, is connected with described controller, described sprayer unit and water supply installation respectively,For opening or close according to described the second control signal, after described switch cuts out, described sprayMist device and described water supply installation conducting, described sprayer unit starts spraying, in described switch opensAfter, described sprayer unit and described water supply installation disconnect, and described sprayer unit stops spraying.
Optionally, described chromacoder comprises signal trigger element and signaling conversion circuit;
Described signal trigger element is connected with described checkout gear, for according to the shape of described transporterState produces low level signal or high level signal;
Described signaling conversion circuit is connected with described signal trigger element, for according to described low levelSignal or high level signal generate described the first control signal.
Optionally, described signaling conversion circuit comprises: photo-coupler, relay, the first resistance,The second resistance and positive-negative-positive triode;
Described photo-coupler comprises input and output, and the input of described photo-coupler comprisesOne light emitting diode, the output of described photo-coupler comprises a NPN type triode, described firstThe positive pole of light emitting diode is connected with the first power supply, the negative pole of described the first light emitting diode and described signalTrigger element connects, and described first sends diode in described low level signal or high level signal controlLower conducting or cut-off, described NPN type triode is led with described the first light emitting diode conductingLogical, described NPN type triode ends with described the first light emitting diode;
The colelctor electrode of described NPN type triode connect with described the first resistance, described the second resistance after with theTwo power supplys connect, the grounded emitter of described NPN type triode, and the base stage of described positive-negative-positive triode connectsBe connected between described the first resistance and the second resistance, the grounded collector of described positive-negative-positive triode, described inThe emitter stage of positive-negative-positive triode is connected with one end of described relay, the other end of described relay and instituteState second source and connect, described relay is for the quilt under the state in conducting at described NPN type triodeConducting, and produce closing contact signal, under the state at described NPN type triode in cut-off, be cut off,And producing break contact signal, described closing contact signal or disconnection electric shock signal are described the first control letterNumber;
Described relay is also connected with described controller.
Optionally, the two ends of described relay are also parallel with protection diode.
Optionally, between described the first power supply and described the first light emitting diode, be also in series with the 3rd resistance.
Optionally, described signal trigger element is the second light emitting diode.
Optionally, the voltage of described the first power supply is 5V, and the voltage of described second source is 12V, described inThe resistance value of the first resistance is 20 kilo-ohms, and the resistance value of described the second resistance is 0.5 kilo-ohm, the described the 3rdThe resistance value of resistance is 0.1 kilo-ohm.
Dust falling in coal mining system provided by the invention, comprising: checkout gear, and for detection of the shape of transporterState; Chromacoder, is connected with checkout gear, for generating first according to the state of transporterControl signal; Controller, is connected with chromacoder, for generating according to the first control signalThe second control signal; Switch, is connected with controller, sprayer unit and water supply installation respectively, usesIn opening or close according to the second control signal, thus by sprayer unit and water supply installation conducting andDisconnect, start spraying to realize transporter sprayer unit when the load condition, transporter is in the time of Light ConditionSprayer unit stops spraying, can avoid excessive spray water to enter coal stream, has not only promoted the quality of coal stream,Simultaneously can saving water resource.
Brief description of the drawings
The structural representation of a kind of dust falling in coal mining system that Fig. 1 provides for the embodiment of the present invention one;
Fig. 2 is a kind of structural representation of signaling conversion circuit;
Fig. 3 is the interface schematic diagram of signaling conversion circuit;
Fig. 4 is the structural representation of relay;
Fig. 5 is the schematic diagram of the output of relay.
Description of reference numerals:
101: checkout gear; 102: chromacoder;
103: controller; 104: switch;
105: sprayer unit; 106: water supply installation;
107: signal trigger element; 108: signaling conversion circuit;
109: photo-coupler; 110: relay;
111: the first resistance; 112: the second resistance;
113:PNP type triode; 114: the three resistance;
115: protection diode; 116: the first light emitting diodes;
117:NPN type triode; 118: first interface;
119: the second interfaces; 120: the three interfaces;
121: the four interfaces; 122: normally opened contact;
123: normally-closed contact; 124: common;
125: the five interfaces; 126: the six interfaces;
127: the seven interfaces.
Detailed description of the invention
The structural representation of a kind of dust falling in coal mining system that Fig. 1 provides for the embodiment of the present invention one, as Fig. 1Shown in, this dust falling in coal mining system comprises: checkout gear 101, chromacoder 102, controller 103,Switch 104 and sprayer unit 105.
Checkout gear 101, for detection of the state of transporter, the state of transporter comprises load shapeState and Light Condition, chromacoder 102 is connected with checkout gear 101, for according to transportThe state of machine generates the first control signal; Controller 103 is connected with chromacoder 102, usesIn generating the second control signal according to the first control signal; Switch 104 respectively with controller 103,Sprayer unit 105 and water supply installation 106 connect, and switch 104 is for according to the second control signalOpen or close, after switch 104 cuts out, sprayer unit 105 and water supply installation 106 conductings,Sprayer unit 106 starts spraying, after switch 104 is opened, and sprayer unit 105 and water supply installation106 disconnect, and sprayer unit 105 stops spraying.
In the present embodiment, chromacoder 102 produces according to the Light Condition of transporter or load conditionThe first control number, controller 103 cutting out or opening according to the first control signal gauge tap 104, logicalCross closing or opening of gauge tap 104, by sprayer unit 105 and water supply installation 106 conductings and disconnectedOpen, start spraying thereby realize transporter sprayer unit 105 in the time of load condition, transporter is at unloaded shapeWhen state, sprayer unit 105 stops spraying, can avoid excessive spray water to enter coal stream, has not only promoted coalThe quality of stream, simultaneously can saving water resource.
Optionally, transporter can be belt-type, crawler type, chain-bucket, scraper-type, the conveying such as spiralMachine.
Optionally, chromacoder 102 comprises signal trigger element 107 and signaling conversion circuit108, signal trigger element 107 is connected with checkout gear 101, for according to the state of transporterProduce low level signal or high level signal; Signaling conversion circuit 108 and signal trigger element 107Connect, generate for the low level signal or the high level signal that produce according to signal trigger element 107The first control signal.
Fig. 2 is a kind of structural representation of signaling conversion circuit, as shown in Figure 2, and signaling conversion circuit108 comprise: photo-coupler 109, relay 110, the first resistance 111, the second resistance 112,Positive-negative-positive triode 113, the 3rd resistance 114, protection diode 115.
Wherein, photo-coupler 109 comprises input and output, the input of photo-coupler 109Comprise the first light emitting diode 116, the output of photo-coupler 109 comprises a NPN type triodeThe positive pole of 117, the first light emitting diodes 116 is connected with the first power supply, optional, the first power supply and firstBetween light emitting diode 116, be also in series with the 3rd resistance 114, thereby circuit is played to dividing potential drop, protectionEffect. The negative pole of the first light emitting diode 116 is connected with signal trigger element 107, and first sends two utmost pointsUnder pipe 116 low level signals that produce at signal trigger element 107 or high level signal control conducting orPerson's cut-off, NPN type triode 117 conducting with the first light emitting diode 116 conductings, NPN typeTriode 117 ends with the first light emitting diode 116 and ends.
The colelctor electrode of NPN type triode 117 is connected rear with second with the first resistance 111, the second resistance 112Power supply connects, the grounded emitter of NPN type triode 117, and the base stage of positive-negative-positive triode 113 is connected toBetween the first resistance 111 and the second resistance 112, the grounded collector of positive-negative-positive triode 113, positive-negative-positiveThe emitter stage of triode 113 is connected with one end of relay 110, the other end of relay 110 and secondPower supply connects, and relay 110 is for being switched under the state in conducting at NPN type triode 117,And produce closing contact signal, under the state at NPN type triode 117 in cut-off, be cut off, and produceRaw break contact signal, closing contact signal or disconnection electric shock signal are as the first control signal, relay110 are also connected with controller 103. Optionally, the two ends of relay 110 are also parallel with protection diode115, thus the remaining capacity after relay 110 power-off can be derived, relay 110 is shielded.
In the present embodiment, preferred, signal trigger element 107 is the second Light-Emitting Diode, and second is luminousDiode is can be in the time that transporter is Light Condition or load condition bright or go out, thereby plays demonstration effect. TheThe negative pole of two Light-Emitting Diodes can with the negative pole of the first light emitting diode 116 of photo-coupler 109 inputsConnect, in the time that transporter is Light Condition, the second Light-Emitting Diode is bright, now the second Light-Emitting DiodeNegative pole is low level, thereby to the negative pole output low level signal of the first light emitting diode 116, makes firstLight emitting diode 116 conductings; In the time that transporter is load condition, the second Light-Emitting Diode goes out, and nowThe negative pole of two Light-Emitting Diodes is high level, thereby high electric to the negative pole output of the first light emitting diode 116Flat signal, ends the first light emitting diode 116.
Fig. 3 is the interface schematic diagram of signaling conversion circuit, and as shown in Figure 3, signaling conversion circuit 108 is rightAltogether present four interfaces outward: first interface 118, the second interface 119, the 3rd interface 120, the 4th connectMouth 121. Wherein, first interface 118 connects the first power supply, and the second interface 119 connects second source,The 3rd interface 120 connects signal trigger element 107, the four interface 121 ground connection.
Fig. 4 is the structural representation of relay, as shown in Figure 4, relay 110 comprise normally opened contact 122,Normally-closed contact 123 and common 124, the schematic diagram of the output that Fig. 5 is relay, as Fig. 5 instituteShow, the output of relay 110 can comprise three interfaces: the 5th interface 125, the 6th interface 126 andThe 7th interface 127, the five interfaces 125 are connected with common 124, and the 6th interface 126 touches with normally closedPoint 123 connects, and the 7th interface 127 is connected with normally opened contact 122, wherein, and the 5th interface 125 and theSeven interfaces 127 are also connected with the input of controller 103 respectively, controller 103 outputs and switch 104Connect. In the present embodiment, controller 103 can provide for switch 104 the 21V power supply of variation, switch104 can be magnetic valve, and the working power of magnetic valve is DC21, and controller 103 receives signal conversionAfter the closing contact signal that circuit 108 is exported, do not export DC21V power supply to magnetic valve, magnetic valve withoutPower supply, keeps closed condition, touches when controller 108 receives the disconnection that signaling conversion circuit 108 exportsAfter some signal, export DC21V power supply to magnetic valve, magnetic valve has working power, stays open state.
Optionally, the voltage of the first power supply is 12 volts, and the voltage of second source is 5 volts, the first resistance114 resistance value is 20 kilo-ohms, and the resistance value of the second resistance 115 is 0.5 kilo-ohm, the 3rd resistance 126Resistance value be 0.1 kilo-ohm.
Optionally, the checkout gear that checkout gear 101 is uclear scale, by utilizing the detection dress of uclear scalePut transporter load condition is detected, can measure for the weight of object that transporter transportsCan realize again the control for sprayer unit 105. Uclear scale comprises checkout gear 101 and host circuit board,Checkout gear 101 is connected with host circuit board, and host circuit board is connected with signaling conversion circuit 108. MainMounted circuit board also can be connected with display board, and signal circuits for triggering 107 are for showing zero load on display boardOr the Light-Emitting Diode of load condition. In addition, the first power supply and second source can be in uclear scale mainframe boxDC12V, DC5V power supply.
The operation principle of the dust falling in coal mining system that the present embodiment provides is as follows:
Signal trigger element 107 can be with the first light emitting diode 116 of the input of photo-coupler 109Negative pole connects, in the time that checkout gear 101 detects that transporter is Light Condition, and signal trigger element 107Produce low level signal, now the negative pole of the first light emitting diode 116 is low level, the first light-emitting diodesThe just very high level of pipe 116, therefore, the first light emitting diode 116 is switched on, photo-coupler 109The also conducting with the conducting of the first light emitting diode 116 of NPN type triode 117 of output, more logicalCross positive-negative-positive triode 113 operating current in the coil of relay 110 is amplified, drive relay 110Contact action. Normally opened contact 122 closures that make relay 110, normally-closed contact 123 disconnects, nowRelay 110 is exported a closing contact signal to controller 103, and controller 103 receives closing contactAfter signal, stop providing power supply to switch 104, switch 104 cuts out, and switch 104 cuts out and makes spraying dressPut 105 and water supply installation 106 disconnect, water supply installation 106 stops supplying water to sprayer unit 105,Sprayer unit 105 stops atomizing de-dusting.
In the time that checkout gear 101 detects that transporter is load condition, signal trigger element 107 produces highLevel signal, now the positive pole of the first light emitting diode 116 and negative pole are high level, and first luminous twoUtmost point pipe 116 ends, and NPN type triode 117 is in off state, and positive-negative-positive triode 113 is also locatedIn cut-off state, no current is by the coil of relay 110, and being failure to actuate in the contact of relay 110, continuesThe normally opened contact 122 of electrical equipment 110 is still for often opening, and normally-closed contact 123 is still normally closed, now relay 110Export a break contact signal to controller 103, controller 103 receives after break contact signal to openingClose 104 power supply is provided, switch 104 is opened, and sprayer unit 105 and water supply installation 106 conductings are supplied waterDevice 106 supplies water to sprayer unit 105, and sprayer unit 105 starts atomizing de-dusting.
In above-mentioned example, signal trigger element 107 during in Light Condition, produces low level at transporterSignal, during in load condition, produces high level signal at transporter. Certainly signal trigger element 107,Also can be set at transporter during in Light Condition, produce high level signal, make the first light emitting diode116 cut-offs, thus make relay 110 export break contact signal, and controller 103 receives disconnectionAfter contact signal, stop providing power supply to switch 104, switch 104 cuts out, sprayer unit 105 and water supplyDevice 106 disconnects. And at transporter during in load condition, signal trigger element 107 produces low levelSignal, makes the first light emitting diode 116 conductings, thereby makes relay 110 export closing contact signal,And controller 103 provides power supply to switch 104 after receiving closing contact signal, switch 104 is opened,Sprayer unit 105 and water supply installation 106 conductings.
Dust falling in coal mining system provided by the invention, can be used for the depositing dust of colliery or other mines, also can be used forOther need the field of depositing dust, during for dust falling in coal mining, and the dynamic situation that can flow according to coal on transporter,Control in real time the opening and closing of sprayer unit, without manual operation, improved the use effect of depositing dust sprayingRate, has stopped invalid spray water and has entered transporter, and having avoided affects mine because a large amount of spray water enter coal streamThe problem of ature of coal, has not only improved ature of coal, has also saved water resource.
Finally it should be noted that: above each embodiment is only in order to technical scheme of the present invention to be described, but not rightIts restriction; Although the present invention is had been described in detail with reference to aforementioned each embodiment, this area commonTechnical staff is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified,Or some or all of technical characterictic is wherein equal to replacement; And these amendments or replacement, andDo not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (7)
1. a dust falling in coal mining system, is characterized in that, comprising:
Checkout gear, chromacoder, controller, switch and sprayer unit;
Described checkout gear, for detection of the state of transporter;
Described chromacoder, is connected with described checkout gear, for according to described transporterState generates the first control signal;
Described controller, is connected with described chromacoder, for controlling letter according to described firstNumber generate the second control signal;
Described switch, is connected with described controller, described sprayer unit and water supply installation respectively,For opening or close according to described the second control signal, after described switch cuts out, described sprayMist device and described water supply installation conducting, described sprayer unit starts spraying, in described switch opensAfter, described sprayer unit and described water supply installation disconnect, and described sprayer unit stops spraying.
2. dust falling in coal mining system according to claim 1, is characterized in that,
Described chromacoder comprises signal trigger element and signaling conversion circuit;
Described signal trigger element is connected with described checkout gear, for according to the shape of described transporterState produces low level signal or high level signal;
Described signaling conversion circuit is connected with described signal trigger element, for according to described low levelSignal or high level signal generate described the first control signal.
3. dust falling in coal mining system according to claim 2, is characterized in that, described signal conversionCircuit comprises: photo-coupler, relay, the first resistance, the second resistance and positive-negative-positive triode;
Described photo-coupler comprises input and output, and the input of described photo-coupler comprisesOne light emitting diode, the output of described photo-coupler comprises a NPN type triode, described firstThe positive pole of light emitting diode is connected with the first power supply, the negative pole of described the first light emitting diode and described signalTrigger element connects, and described first sends diode in described low level signal or high level signal controlLower conducting or cut-off, described NPN type triode is led with described the first light emitting diode conductingLogical, described NPN type triode ends with described the first light emitting diode;
The colelctor electrode of described NPN type triode connect with described the first resistance, described the second resistance after with theTwo power supplys connect, the grounded emitter of described NPN type triode, and the base stage of described positive-negative-positive triode connectsBe connected between described the first resistance and the second resistance, the grounded collector of described positive-negative-positive triode, described inThe emitter stage of positive-negative-positive triode is connected with one end of described relay, the other end of described relay and instituteState second source and connect, described relay is for the quilt under the state in conducting at described NPN type triodeConducting, and produce closing contact signal, under the state at described NPN type triode in cut-off, be cut off,And producing break contact signal, described closing contact signal or disconnection electric shock signal are described the first control letterNumber;
Described relay is also connected with described controller.
4. dust falling in coal mining system according to claim 3, is characterized in that, two of described relayEnd is also parallel with protection diode.
5. according to the dust falling in coal mining system described in claim 3 or 4, it is characterized in that described the first electricityBetween source and described the first light emitting diode, be also in series with the 3rd resistance.
6. dust falling in coal mining system according to claim 2, is characterized in that, described signal triggers singleUnit is the second light emitting diode.
7. dust falling in coal mining system according to claim 5, is characterized in that, described the first power supplyVoltage is 5V, and the voltage of described second source is 12V, and the resistance value of described the first resistance is 20 kilo-ohms,The resistance value of described the second resistance is 0.5 kilo-ohm, and the resistance value of described the 3rd resistance is 0.1 kilo-ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510707809.2A CN105600363A (en) | 2015-10-27 | 2015-10-27 | Coal mine dust suppression system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510707809.2A CN105600363A (en) | 2015-10-27 | 2015-10-27 | Coal mine dust suppression system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105600363A true CN105600363A (en) | 2016-05-25 |
Family
ID=55980816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510707809.2A Pending CN105600363A (en) | 2015-10-27 | 2015-10-27 | Coal mine dust suppression system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105600363A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251793A (en) * | 2010-05-18 | 2011-11-23 | 淮南矿业(集团)有限责任公司 | Purifying and spraying system and method for automatic spraying by using same |
| WO2012000148A1 (en) * | 2010-06-27 | 2012-01-05 | Hou Yingxiang | Spraying and dust reduction device for coal mine |
| CN102678161A (en) * | 2011-03-08 | 2012-09-19 | 淮南矿业(集团)有限责任公司 | Automatic spraying dust-falling device and automatic control assembly |
| CN103144942A (en) * | 2013-03-20 | 2013-06-12 | 淮南矿业(集团)有限责任公司 | Dust-falling spraying system of conveyor |
| CN203925566U (en) * | 2014-05-06 | 2014-11-05 | 淮南矿业(集团)有限责任公司 | Automation dust falling system |
| CN205098947U (en) * | 2015-10-27 | 2016-03-23 | 淮南矿业(集团)有限责任公司 | Colliery dust fall system |
-
2015
- 2015-10-27 CN CN201510707809.2A patent/CN105600363A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251793A (en) * | 2010-05-18 | 2011-11-23 | 淮南矿业(集团)有限责任公司 | Purifying and spraying system and method for automatic spraying by using same |
| WO2012000148A1 (en) * | 2010-06-27 | 2012-01-05 | Hou Yingxiang | Spraying and dust reduction device for coal mine |
| CN102678161A (en) * | 2011-03-08 | 2012-09-19 | 淮南矿业(集团)有限责任公司 | Automatic spraying dust-falling device and automatic control assembly |
| CN103144942A (en) * | 2013-03-20 | 2013-06-12 | 淮南矿业(集团)有限责任公司 | Dust-falling spraying system of conveyor |
| CN203925566U (en) * | 2014-05-06 | 2014-11-05 | 淮南矿业(集团)有限责任公司 | Automation dust falling system |
| CN205098947U (en) * | 2015-10-27 | 2016-03-23 | 淮南矿业(集团)有限责任公司 | Colliery dust fall system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204342170U (en) | Weaving loom broken thread detector | |
| CN205098947U (en) | Colliery dust fall system | |
| CN105600363A (en) | Coal mine dust suppression system | |
| CN103144942A (en) | Dust-falling spraying system of conveyor | |
| CN204479726U (en) | The indicating fault control circuit of the two redundant electrical pow er supply system of a kind of airplane signal lamp | |
| CN203127684U (en) | Dust falling spray system for transport plane | |
| CN106289440A (en) | A kind of system being applied to water tank lacks water detection | |
| CN103488226B (en) | Output voltage control circuit | |
| CN204216662U (en) | Ups static switch control circuit | |
| CN108469457A (en) | Three-in-one gas detector based on bussing technique | |
| CN205330733U (en) | Long -range outage system in colliery | |
| CN104632273A (en) | Mining anti-explosion coal bunker gas automatic emission control device | |
| CN205265347U (en) | Redundant power supply system of dicyclo | |
| CN205002097U (en) | Dual -purpose one is equipped with boiler control circuit that feeds water in succession | |
| CN104571091A (en) | Controller fault detection system of intelligent transmitter | |
| CN104735836A (en) | Voltage source for driving light-emitting diode lamps | |
| CN2522437Y (en) | Mars detecting device for cotton conveying pipeline | |
| CN107318194A (en) | A kind of backlight module lighting system | |
| CN205246775U (en) | Detection circuitry structure based on two check points | |
| CN103758182B (en) | A kind of water under high pressure feed water control system and control method thereof being applicable to electroplating shop | |
| CN205151279U (en) | Structure convenient to carry out 90 degrees upsets to electrical components | |
| CN102289212B (en) | Control chip for online detection | |
| CN207399048U (en) | A kind of down-hole switch internal body diodes circuit | |
| CN202330617U (en) | Testing device for preventing inversion of diodes | |
| CN204267031U (en) | Adjustable hydroelectric locking device of tunneling machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160525 |
|
| WD01 | Invention patent application deemed withdrawn after publication |