CN108312712A - A kind of LEL circling measurments automatic control device - Google Patents
A kind of LEL circling measurments automatic control device Download PDFInfo
- Publication number
- CN108312712A CN108312712A CN201711470738.4A CN201711470738A CN108312712A CN 108312712 A CN108312712 A CN 108312712A CN 201711470738 A CN201711470738 A CN 201711470738A CN 108312712 A CN108312712 A CN 108312712A
- Authority
- CN
- China
- Prior art keywords
- lel
- measurments
- circling
- automatic control
- vacuum generator
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
Abstract
The invention discloses a kind of LEL circling measurments automatic control devices, including sequentially connected LEL detections solenoid valve, pressure reducing valve and vacuum generator A, vacuum generator A is also sequentially connected LEL detectors, flowmeter, filter, and filter is connected separately with several groups routing inspection unit.The present invention can be detected the solvent strength of drying unit kind, by obtained detected value, automatically control and adjust the ratio of air entering and returning, to play the role of reducing air draft, improve concentration, saving heating energy consumption.
Description
Technical field
The invention belongs to printing machinery technical fields, are related to a kind of LEL circling measurments automatic control device.
Background technology
Printing equipment can discharge a large amount of VOCs (volatile organic compounds) in process of production, these VOCs can be to ring
Border pollutes.In face of increasingly serious environmental protection pressure, most of flexible package enterprise can use RTO (heat accumulation type thermal oxidation) to row
Deflation body is handled.And RTO equipment costs are related with printing machine discharge gas concentration, air quantity, concentration is low, air quantity greatly then RTO
The purchase cost and operating cost of equipment are excessively high.
Invention content
The object of the present invention is to provide a kind of LEL circling measurments automatic control devices, can be to the solvent of drying unit kind
Concentration is detected, and by obtained detected value, automatically controls and adjust the ratio of air entering and returning, to play reduction air draft, carry
High concentration, the effect for saving heating energy consumption.
The technical solution adopted in the present invention is a kind of LEL circling measurments automatic control device, including sequentially connected
LEL detections solenoid valve, pressure reducing valve and vacuum generator A, vacuum generator A are also sequentially connected LEL detectors, flowmeter, filtering
Device, filter are connected separately with several groups routing inspection unit.
The features of the present invention also characterized in that
The structure of every group of routing inspection unit is：Including conversion electromagnetic valve, conversion electromagnetic valve is separately connected probe tube, vacuum occurs
Device B and inspection solenoid valve, vacuum generator B are sequentially connected pressure reducing valve, emptying solenoid valve.
Emptying solenoid valve in each group routing inspection unit is connected to snorkel A.
Inspection solenoid valve in each group routing inspection unit is connected to snorkel B.
Probe tube passes through gas sampled piping connection with conversion electromagnetic valve.
Beneficial effects of the present invention are as follows：
(1) present apparatus is adapted to the blast regulation system of all kinds of printing machines, and applicability is good；
(2) mode that LEL inspections are taken under the premise of not influencing use, has saved production cost；
(3) mode for taking LEL inspections reduces the discharge of gas, environmental protection.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of LEL circling measurments automatic control device of the present invention.
In figure, 1.LEL detection solenoid valves, 2. pressure reducing valve A, 3. vacuum generator A, 4.LEL detectors, 5. flowmeters, 6.
Filter, 7. conversion electromagnetic valves, 8. probe tubes, 9. vacuum generator B, 10. inspection solenoid valves, 11. pressure reducing valve B, 12. emptying electricity
Magnet valve, 13. snorkel A, 14. snorkel B, 15. gas sampled pipelines, 16. compress gas sources.
Specific implementation mode
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of LEL circling measurments automatic control device of the present invention, structure including sequentially connected LEL as shown in Figure 1, detect
Solenoid valve 1 (LEL refers to minimum explosion limit), pressure reducing valve A2 and vacuum generator A3, vacuum generator A3 are also sequentially connected LEL inspections
Instrument 4, flowmeter 5, filter 6 are surveyed, the filter 6 is connected separately with several groups routing inspection unit.
The structure of every group of routing inspection unit is：Including conversion electromagnetic valve 7, conversion electromagnetic valve 7 is separately connected probe tube 8, vacuum
Generator B9 and inspection solenoid valve 10, vacuum generator B9 are sequentially connected pressure reducing valve B11, emptying solenoid valve 12.
Emptying solenoid valve 12 in each group routing inspection unit is connected to snorkel A13.
Inspection solenoid valve 10 in each group routing inspection unit is connected to snorkel B14.
Probe tube 8 is connect with conversion electromagnetic valve 7 by gas sampled pipeline 15.
A kind of operation principle of LEL circling measurments automatic control device of the present invention is the printing element connection each numbered
It is detected using one group of routing inspection unit；After machine booting and true qualities hot-air system opening, taking in first group of routing inspection unit
Sample pipe 1 extracts sample gas since NO.1 printing element exhaust ducts, and 12 dead electricity of emptying solenoid valve in routing inspection unit is not at this time
Work cut-out from compression gas source 16 by compressed gas, while in routing inspection unit 7 dead electricity of conversion electromagnetic valve cut-out from
The sample gas of NO.1 printing element gas sampleds pipeline 15, and LEL detects solenoid valve 1 at this time and inspection solenoid valve 10 obtains electrician
Make, the gas for compressing gas source 16 detects solenoid valve 1 by LEL by gas piping and pressure reducing valve A2 passes through vacuum generator
A3, since gas source gas flows through vacuum generator A3, vacuum generator A3, which starts to extract, at this time passes through gas sampled pipeline 15
The detection gas of inspection solenoid valve 10, filter 6, flowmeter 5, LEL detectors 4 are flowed through, are touched if detection gas concentration is more than
The percent value for touching screen setting, calculates this unit damper motor according to program and starts adjust automatically, if detection gas concentration is small
In the percent value of touch screen setting, then the detection of next unit is carried out, repeats the action of NO.1 printing elements.
In NO.1 printing element gas detections, NO.2, NO.3 ... printing element are in state to be detected, to be detected at this time
The cut-out of 10 dead electricity of printing element inspection solenoid valve from gas sampled pipeline 15 by sample gas, while 12 He of emptying solenoid valve
The gas of 7 work once electrified of conversion electromagnetic valve, compression gas source 16 passes through emptying solenoid valve 12, pressure reducing valve B11 by gas piping
By vacuum generator B9, since gas source gas flows through vacuum generator B9, vacuum generator B9 starts to extract and pass through at this time
The sample gas that gas sampled pipeline 15 flows through conversion electromagnetic valve 7 is in state to be detected.
NO.1, NO.2 ... printing element follow the above operation principle reciprocal automatic work under inspection and state to be inspected.
Claims (5)
1. a kind of LEL circling measurments automatic control device, it is characterised in that：Including sequentially connected LEL detection solenoid valve (1),
Pressure reducing valve A (2) and vacuum generator A (3), vacuum generator A (3) are also sequentially connected LEL detectors (4), flowmeter (5), mistake
Filter (6), the filter (6) are connected separately with several groups routing inspection unit.
2. a kind of LEL circling measurments automatic control device according to claim 1, it is characterised in that：Inspection described in every group
The structure of unit is：Including conversion electromagnetic valve (7), conversion electromagnetic valve (7) is separately connected probe tube (8), vacuum generator B (9)
And inspection solenoid valve (10), vacuum generator B (9) are sequentially connected pressure reducing valve B (11), emptying solenoid valve (12).
3. a kind of LEL circling measurments automatic control device according to claim 2, it is characterised in that：Inspection described in each group
Emptying solenoid valve (12) in unit is connected to snorkel A (13).
4. a kind of LEL circling measurments automatic control device according to claim 2, it is characterised in that：Inspection described in each group
Inspection solenoid valve (10) in unit is connected to snorkel B (14).
5. a kind of LEL circling measurments automatic control device according to claim 1, it is characterised in that：The probe tube (8)
It is connect by gas sampled pipeline (16) with conversion electromagnetic valve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711470738.4A CN108312712A (en) | 2017-12-29 | 2017-12-29 | A kind of LEL circling measurments automatic control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711470738.4A CN108312712A (en) | 2017-12-29 | 2017-12-29 | A kind of LEL circling measurments automatic control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108312712A true CN108312712A (en) | 2018-07-24 |
Family
ID=62894024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711470738.4A Pending CN108312712A (en) | 2017-12-29 | 2017-12-29 | A kind of LEL circling measurments automatic control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108312712A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003102607A1 (en) * | 2002-06-04 | 2003-12-11 | Scott Technologies, Inc. | Combustible-gas measuring instrument |
| US20100063748A1 (en) * | 2008-09-10 | 2010-03-11 | Delphian Corporation | Gas Detector System and Method |
| CN104613564A (en) * | 2014-12-19 | 2015-05-13 | 北京百度网讯科技有限公司 | Air cleaner |
| CN205871480U (en) * | 2016-07-05 | 2017-01-11 | 江阴市力达印刷包装机械有限公司 | Electric control system suitable for gravure press drying system |
| CN206178491U (en) * | 2016-06-16 | 2017-05-17 | 上海策立工程技术有限公司 | Formula flue gas adjusting system patrols and examines |
-
2017
- 2017-12-29 CN CN201711470738.4A patent/CN108312712A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003102607A1 (en) * | 2002-06-04 | 2003-12-11 | Scott Technologies, Inc. | Combustible-gas measuring instrument |
| US20100063748A1 (en) * | 2008-09-10 | 2010-03-11 | Delphian Corporation | Gas Detector System and Method |
| CN104613564A (en) * | 2014-12-19 | 2015-05-13 | 北京百度网讯科技有限公司 | Air cleaner |
| CN206178491U (en) * | 2016-06-16 | 2017-05-17 | 上海策立工程技术有限公司 | Formula flue gas adjusting system patrols and examines |
| CN205871480U (en) * | 2016-07-05 | 2017-01-11 | 江阴市力达印刷包装机械有限公司 | Electric control system suitable for gravure press drying system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180724 |
|
| RJ01 | Rejection of invention patent application after publication |