CN201258752Y - Wind pipe air quantity controlling switch - Google Patents
Wind pipe air quantity controlling switch Download PDFInfo
- Publication number
- CN201258752Y CN201258752Y CNU2008201871476U CN200820187147U CN201258752Y CN 201258752 Y CN201258752 Y CN 201258752Y CN U2008201871476 U CNU2008201871476 U CN U2008201871476U CN 200820187147 U CN200820187147 U CN 200820187147U CN 201258752 Y CN201258752 Y CN 201258752Y
- Authority
- CN
- China
- Prior art keywords
- air duct
- elastic sealing
- switch
- box body
- sealing gasket
- 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 an air volume control switch of a mining air duct, which comprises an air duct which is arranged on a fan. A flexible belt is wound around the outer ring of the air duct; box bodies are arranged in the space at the two ends of the flexible belt; an elastic sealing pad is arranged in either box; the elastic sealing pad extends out of the hole at the bottom of the box body and can contact with the air duct; the upper surface of the bottom of the elastic sealing pad is provided with a pressing spring; a micro switch is arranged at the upper part of the spring; one end of a switch limiting plate is connected with the micro switch; and the other end thereof is connected with the bottom of the elastic sealing pad. The utility model can directly transform the variable of the diameter of the air duct into the switch control travel and then control the on/off state of the fan through the change of the diameter of the air duct of the fan. The freedom of the switch installation position is increased; the control travel is short; the driving force is small; the structure is simple; the control is reliable; and the versatility and applicability are high.
Description
Technical field
The utility model belongs to the blower fan start-stop automaton of mine ventilation system, the automatic control of the local fan of heading face under the particularly suitable coal mine.
Background technology
Hundreds of meters apart from ground depth numbers of mine kilometer, underworkings in length and breadth and multiple pernicious gas arranged except that main channel also need of ventilating be carried out local ventilation to work plane, because particular job environment and the requirement of down-hole, need fan delivery carried out and control.The control of fan delivery of the prior art, adopt the rigidity of metal material to open folder formula switch, but this kind switch is owing to utilized lever principle, need the air duct vary in diameter more than 50～80 millimeters gauge tap could work, the long driving force that requires of its control stroke is big, switch is had relatively high expectations with respect to the installation site of air duct, if the installation site is incorrect, break down easily or cause that switch delays work, switch corrosion and malfunctioning phenomenon can occur in the down-hole use for a long time, and down-hole blower fan quantity and specification are numerous, and the air duct diameter is different, the blower fan that can not realize various air ducts is general, is unfavorable for the raising and the safety management of production efficiency.
Summary of the invention
The purpose of this utility model provides a kind of air duct air volume control switch for overcoming the deficiencies in the prior art, can realize the general and adaptation down-hole particular job environment of blower fan of various air duct diameters.
The technical scheme that its technical problem that solves the utility model adopts is: comprise the air duct that is installed on the blower fan, be wound with soft band in the air duct outer ring, a box body is installed in locus at soft band two ends, one elastic sealing gasket is installed in the box body, this elastic sealing gasket stretches out the hole of box body bottom and can contact with air duct, is pressed with spring in the upper base surface of elastic sealing gasket, and microswitch is installed in spring top, switch banking stop one end connects microswitch, and the other end connects the bottom of elastic sealing gasket.
The beneficial effects of the utility model are:
1,, realizes the start-stop of blower fan is controlled by blower fan air duct diameter variation directly with the control stroke of air duct diameter variation amount as switch; Adopt the soft air duct of control blower fan that brings to change, become rigidity into flexible, the degree of freedom of switch installation site increases.
2, the air duct vary in diameter is in 12 millimeter, and driving force reaches 6.5 newton, and the control stroke is short and driving force is little.
Air resistance when 3, the compression spring can reduce switch and resets in the annular seal space.
4, main material adopts engineering plastics, and microswitch and control circuit board place in the seal box, can adapt to particular job environment of down-hole.
5, simple in structure, control is reliable, and versatility and applicability are strong.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1. suspension ring; 2. control circuit board; 3. box body; 4. microswitch; 5. incoming line; 6. elastic seal ring; 7. lid; 8. spring; 9. switch banking stop; 10. soft band is regulated tight locking button; 11. soft band; 12. air duct.
The specific embodiment
As shown in Figure 1, air duct 12 is installed on the blower fan.Be wound with in air duct 12 outer rings and softly be with 11, soft two ends with 11 are fixed on the blower fan.In soft spatial joint clearance position with 11 two ends one box body 3 is installed, an elastic sealing gasket 6 is installed in box body 3, this elastic sealing gasket 6 stretches out the hole of box body 3 bottoms.The utility model lid 7 is fixed on the end opening of box body 3, so elastic sealing gasket 6 just stretches out the hole of lid 7 bottoms, and elastic sealing gasket 6 can contact with air duct 12 at extended position.Upper base surface at elastic sealing gasket 6 is pressed with spring 8, and microswitch 4 is installed in spring 8 tops, and switch banking stop 9 one ends connect microswitch 4, and the other end connects the bottom of elastic sealing gasket 6.Soft be with on 11 to install regulate tight locking button 10 and can regulate and softly be with 11.
The utility model when work when air quantity too strong, air duct 12 expand into the certain position blower fan can autostop: when air quantity too a little less than, air duct 12 is retracted to the certain position blower fan can Auto Power On.The position A of air duct 12 is the situation of the normal air quantity of blower fan, and according to the actual change situation of air duct 12 with respect to the air quantity size, utilize and regulate soft 11 length of being with of tight locking button 10 adjustings, reserve soft with 11 with the spacing H of air duct 12, and utilize suspension ring 1 that air duct 12 air volume control switches are fixed on appropriate location around the air duct 12.When increasing air duct 12, air quantity expands, when air duct 12 positions arrive the C face of elastic sealing gasket 6, microswitch 4 is in the state of starting to work, if air quantity continues to increase, air duct 12 compressing elastic sealing gaskets 6 also drive 9 actions of switch banking stop, microswitch 4 cuts out when arriving the B position, and closes fan power by control circuit board 2.Inwardly shrink along with air quantity reduces air duct 12, switch banking stop 9 resets when air duct 12 breaks away from the C face of elastic sealing gasket 6, and microswitch 4 is opened, and connects fan power by control circuit board 2.
Claims (3)
1, a kind of air duct air volume control switch, comprise the air duct (12) that is installed on the blower fan, it is characterized in that: be wound with soft band (11) in air duct (12) outer ring, a box body (3) is installed in locus at soft band (11) two ends, one elastic sealing gasket (6) is installed in the box body (3), this elastic sealing gasket (6) stretches out the hole of box body (3) bottom and can contact with air duct (12), upper base surface at elastic sealing gasket (6) is pressed with spring (8), microswitch (4) is installed in spring (8) top, switch banking stop (9) one ends connect microswitch (4), and the other end connects the bottom of elastic sealing gasket (6).
2, air duct air volume control switch according to claim 1 is characterized in that: go up to install at soft band (11) and regulate tight locking button (10), control circuit board (2) is installed in box body (3).
3, air duct air volume control switch according to claim 1 is characterized in that: just going up fixedly connected suspension ring (1) at box body (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201871476U CN201258752Y (en) | 2008-09-25 | 2008-09-25 | Wind pipe air quantity controlling switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201871476U CN201258752Y (en) | 2008-09-25 | 2008-09-25 | Wind pipe air quantity controlling switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201258752Y true CN201258752Y (en) | 2009-06-17 |
Family
ID=40772984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201871476U Expired - Fee Related CN201258752Y (en) | 2008-09-25 | 2008-09-25 | Wind pipe air quantity controlling switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201258752Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936177A (en) * | 2010-07-27 | 2011-01-05 | 山西兰花科技创业股份有限公司 | Wind tube wind quantity switch |
| CN103590854A (en) * | 2013-10-16 | 2014-02-19 | 镇江中煤电子有限公司 | Mine ventilation duct air flow switch sensor |
-
2008
- 2008-09-25 CN CNU2008201871476U patent/CN201258752Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936177A (en) * | 2010-07-27 | 2011-01-05 | 山西兰花科技创业股份有限公司 | Wind tube wind quantity switch |
| CN101936177B (en) * | 2010-07-27 | 2012-08-22 | 山西兰花科技创业股份有限公司 | Wind tube wind quantity switch |
| CN103590854A (en) * | 2013-10-16 | 2014-02-19 | 镇江中煤电子有限公司 | Mine ventilation duct air flow switch sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Zhongmei Electron Co., Ltd. Assignor: Jia Baiqing Contract record no.: 2011320000115 Denomination of utility model: Wind pipe air quantity controlling switch Granted publication date: 20090617 License type: Exclusive License Record date: 20110302 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090617 Termination date: 20160925 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |