CN203964937U - Anti-clogging gas detector housing - Google Patents
Anti-clogging gas detector housing Download PDFInfo
- Publication number
- CN203964937U CN203964937U CN201420419794.0U CN201420419794U CN203964937U CN 203964937 U CN203964937 U CN 203964937U CN 201420419794 U CN201420419794 U CN 201420419794U CN 203964937 U CN203964937 U CN 203964937U
- Authority
- CN
- China
- Prior art keywords
- valve
- seal casinghousing
- baffle plate
- scavenge port
- air inlet
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a kind of anti-clogging gas detector housing, comprise a seal casinghousing, described seal casinghousing adopts crystalline ceramics to make, on described seal casinghousing, be provided with a scavenge port, scavenge port place is provided with a valve, on the inwall of described seal casinghousing, be provided with a protective cover, between the afterbody of motor and protective cover, be provided with a spring, described scavenge port is fixed with a rubber blanket near the outer one end of seal casinghousing (1), also comprise a retention device, retention device comprises baffle plate, connecting rod and cylinder.The beneficial effects of the utility model: this device arranges baffle plate, prevent these vibrations of valve rotation, thereby automatically stop up scavenge port; The termination of valve is round table-like, facilitates the motion of baffle plate, even if valve does not have rollback to put in place, baffle plate also can move.
Description
Technical field
The utility model belongs to detector field, particularly relates to a kind of anti-clogging gas detector housing.
Background technology
Gas detector, combustible gas probe, it is that it is generally divided into catalytic type combustible gas probe and semiconductor combustible gas probe to detector single or many combustible gases concentration-response.
Catalytic type combustible gas probe is to utilize the resistance variations after the heating of refractory metal platinum filament to measure combustable gas concentration, in the time that inflammable gas enters detector, cause oxidation reaction (flameless burning) on platinum filament surface, the heat of its generation raises the temperature of platinum filament, and the resistivity of platinum filament just changes; The higher gas sensory element of sensitivity for semiconductor combustible gas probe, it runs into inflammable gas in working order time, and semiconductor resistor declines, and drop-out value and combustable gas concentration have corresponding relation.
In semiconductor combustible gas probe, gas sensory element senses is after inflammable gas, and resistance declines, the measurement of resistance value completes by circuit, be generally an electron device that resistance is constant of series connection, test respectively two terminal voltages on device, because electric current equates, be easy to calculate semi-conductive resistance, processor, according to transient resistance, calculates combustable gas concentration value, and shows on display, allow staff check, hummer is also set sometimes and reports to the police.
The housing of existing gas detector is all adopted made of plastic, when staff carries detector inspection, or while being fixed on the easy leak point of combustion gas, damage if there is electrical appliance wires, produce electric spark or electric arc, likely combustible gas is lighted, not only burn out gas detector, also can hurt staff or the electric equipment of periphery, blast tube, causes great accident.The gas detector of existing employing ceramic shell; an air hole is set; then a thread plug carries out instantaneous obstruction; prevent that internal-combustion from having influence on outside; protect staff; thread plug rotates through a driven by motor; motor is fixed on a spring; thread plug can be moved easily in the axial direction, but when thread plug is opened, spring double thread is plugged with a thrust; in the time of motion vibrations; thread plug can, to precession in air hole, until likely air hole is stopped up, cause detector not survey.
Utility model content
The purpose of this utility model is to overcome the deficiency of present technology, a kind of anti-clogging gas detector housing being provided, solving in the gas detector of existing pottery, be there is rotation phenomenon by vibrations in thread plug, easily air admission hole is stopped up to the defect that causes detector not survey.
The utility model is achieved through the following technical solutions: anti-clogging gas detector housing, comprise a seal casinghousing, described seal casinghousing adopts crystalline ceramics to make, on described seal casinghousing, be provided with a scavenge port, scavenge port place is provided with a valve, valve is also for pottery is made, it is cylindric that valve is, valve coordinates with scavenge port size, and both are threaded, valve is by the driven by motor rotation of seal casinghousing inside, on the sidewall of valve, be provided with at least one air inlet duct, described air inlet duct bearing of trend is axial consistent with valve, and air inlet duct extends to the other end away from one end of motor from valve, the length of air inlet duct is less than the length of valve, the control end of motor is connected on a spark detector in seal casinghousing, on the inwall of described seal casinghousing, be provided with a protective cover, motor is positioned at protective cover, the perisporium of protective cover is Openworks shape, between the afterbody of motor and protective cover, be provided with a spring, valve, motor, spring three's center line overlaps, described scavenge port is fixed with a rubber blanket near the one end outside seal casinghousing, the center of rubber blanket is provided with an air hole, air inlet duct is greater than the radius of air hole to the distance of valve center line, also comprise a retention device, retention device comprises baffle plate, connecting rod and cylinder, described baffle plate is positioned at scavenge port, it is perpendicular to the bearing of trend of scavenge port, baffle plate is connected on cylinder by connecting rod, baffle plate is driven edge perpendicular to moving on scavenge port bearing of trend by cylinder, baffle plate is in the form of annular discs, cylinder can drive baffle plate to leave scavenge port, also can make the center line of baffle plate and the middle line overlap of scavenge port, valve is during towards the end face in outside and baffle plate laminating, air inlet duct exposes in seal casinghousing, the radius of baffle plate is less than the distance of air inlet duct to valve center line, the side of baffle plate in seal casinghousing is provided with a pressure transducer, the output terminal of this pressure transducer is connected to the control end of cylinder, described valve is provided with a round platform on the end face in outside, the radius of the end face of round platform is greater than the radius of air hole.Valve is generally to rotate to air inlet duct can get at seal casinghousing inside, at this moment air inlet duct will be communicated with inside and outside seal casinghousing, the gas sensory of seal casinghousing inside may detect outside gas situation, when the electronic device in seal casinghousing occurs aging, energising produces after spark, inner combustion gas meeting burning, spark detector can sense spark, can control at once machine operation, motor is by valve driven rotary, thereby make valve turn outside seal casinghousing, in air inlet duct reaches seal casinghousing, seal casinghousing is sealed.Burning in seal casinghousing can not have influence on outside, does not have great accident and occurs, and has protected staff.Because ceramic thread seal performance is not fine, so this device is at rubber blanket of scavenge port outer setting, if not perforate of rubber blanket, scavenge port is blocked, and the rubber blanket central part of this device is offered an air hole, valve rotation is urged to after rubber blanket, and air hole is blocked, and rubber pays somebody's debt and expect repayment later the air inlet duct on valve blocked, because the radius of air hole is less than the distance of air inlet duct to valve center line.After being rubber blanket and valve laminating, the position not being communicated with between air inlet duct and air hole, the sealing of so having accomplished seal casinghousing; And need to ventilate time, valve is away from rubber blanket, air enters in seal casinghousing through air hole, scavenge port, air channel, protective cover successively, has formed ventilation.It is to protect motor and valve that a protective cover is set, and prevents and internal components bumps against, and spring is set, and is to have ensured that to a great extent valve presses close to after rubber blanket, there will not be the phenomenon of vibrations reversion, has further ensured sealing.Spring provides elastic force, make valve nonreversible, like this in the time of sealing, do not have flame string and go out housing, do not have combustion gas and enter housing yet, but when valve open, spring is larger to the elastic force of valve, after valve is shaken, be easy to inner rotary, thereby scavenge port is stopped up, on this device, be provided with a barrier plate, in the time that valve does not block up scavenge port, baffle plate is blocked the outside shift position of valve, valve must not be moved, and while needing valve event, because be provided with pressure transducer on baffle plate, when sensing certain force, pressure transducer just can transmit a signal to cylinder, usually valve shakes the power that pressure transducer is caused, pressure transducer is can transmitted signal, cylinder control barrier plate is by open walk, valve is outwards mobile, scavenge port is blocked.And in this device, baffle plate radius is less than the distance of air inlet duct to valve center line, this distance is also the bee-line of air inlet duct to valve center line, in baffle plate center line and valve when line overlap, can air inlet duct not had and be stopped, and valve Front-end Design becomes round table-like, facilitate the movement of baffle plate.
Further, on above-mentioned seal casinghousing, be provided with a handle, facilitate staff to carry this device.
The beneficial effects of the utility model are:
(1) this device is at rubber blanket of scavenge port outer setting, and need to ventilate time, air is in air hole, scavenge port, air channel, the protective cover of rubber blanket carry out as seal casinghousing; And need to seal time, valve laminating rubber blanket, coordinates air hole, air channel all to close, ensure sealing;
(2) protective cover is set, has prevented that motor equals the miscellaneous part collision in seal casinghousing, the use of response device;
(3) spring is set, has prevented that valve from being shaken reversion, thereby destroy sealing;
(4) baffle plate is set, prevents these vibrations of valve rotation, thereby automatically stop up scavenge port;
(5) termination of valve is round table-like, facilitates the motion of baffle plate, even if valve does not have rollback to put in place, baffle plate also can move.
Brief description of the drawings
Fig. 1 is seal casinghousing outer end schematic diagram;
Fig. 2 is the broken away view of valve, motor, protective cover;
Cut-open view when Fig. 3 is valve opening;
Cut-open view when Fig. 4 is valve closing;
In figure, 1-seal casinghousing, 2-motor, 3 protective covers, 4-valve, 5-spring, 6-handle, 7-retention device, 101-scavenge port, 102-rubber blanket, 103-air hole, 401-air inlet duct, 402-round platform, 701-baffle plate, 702-connecting rod, 703-cylinder.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but structure of the present utility model is not limited only to following examples:
[embodiment]
As Figure 1-4, anti-clogging gas detector housing, comprise a seal casinghousing 1, comprise a seal casinghousing 1, described seal casinghousing 1 adopts crystalline ceramics to make, on described seal casinghousing 1, be provided with a scavenge port 101, scavenge port 101 places are provided with a valve 4, valve 4 is also for pottery is made, valve 4 is cylindric, valve 4 coordinates with scavenge port 101 sizes, and both are threaded, valve 4 is by motor 2 driven rotary of seal casinghousing 1 inside, on the sidewall of valve 4, be provided with at least one air inlet duct 401, described air inlet duct 401 bearing of trends are axial consistent with valve 4, and air inlet duct 401 extends to the other end away from one end of motor 2 from valve 4, the length of air inlet duct 401 is less than the length of valve 4, the control end of motor 2 is connected on a spark detector in seal casinghousing 1, on the inwall of described seal casinghousing 1, be provided with a protective cover 3, motor 2 is positioned at protective cover 3, the perisporium of protective cover 3 is Openworks shape, between the afterbody of motor 2 and protective cover 3, be provided with a spring 5, valve 4, motor 2, spring 5 threes' center line overlaps, described scavenge port 101 is fixed with a rubber blanket 102 near the one end outside seal casinghousing 1, the center of rubber blanket 102 is provided with an air hole 103, air inlet duct 401 is greater than the radius of air hole 103 to the distance of valve 4 center lines, also comprise a retention device 7, retention device 7 comprises baffle plate 701, connecting rod 702 and cylinder 703, described baffle plate 701 is positioned at scavenge port 101, it is perpendicular to the bearing of trend of scavenge port 101, baffle plate 701 is connected on cylinder 703 by connecting rod 702, baffle plate 701 is driven edge perpendicular to moving on scavenge port 101 bearing of trends by cylinder 703, baffle plate 701 is in the form of annular discs, cylinder 703 can drive baffle plate 701 to leave scavenge port 101, also can make the center line of baffle plate 701 and the middle line overlap of scavenge port 101, when valve 4 is fitted towards the end face in outside and baffle plate 701, air inlet duct 401 exposes in seal casinghousing 1, the radius of baffle plate 701 is less than the distance of air inlet duct 401 to valve 4 center lines, the side of baffle plate 701 in seal casinghousing 1 is provided with a pressure transducer, the output terminal of this pressure transducer is connected to the control end of cylinder 703, described valve 4 is provided with a round platform 402 on the end face in outside, the radius of the end face of round platform 402 is greater than the radius of air hole 103, guarantee valve 4 can be blocked air hole 103.Valve 4 is generally to rotate to air inlet duct 401 can get at seal casinghousing 1 inside, at this moment air inlet duct 401 is communicated with inside and outside seal casinghousing 1, the gas sensory of seal casinghousing 1 inside may detect outside gas situation, when the electronic device in seal casinghousing 1 occurs aging, energising produces after spark, inner combustion gas meeting burning, spark detector can sense spark, can control at once motor 2 works, motor 2 is by valve 4 driven rotary, thereby make valve 4 to the outer turn of seal casinghousing 1, in air inlet duct 401 reaches seal casinghousing 1, seal casinghousing 1 is sealed.Burning in seal casinghousing 1 can not have influence on outside, does not have great accident and occurs, and has protected staff.Because ceramic thread seal performance is not fine, so this device is at rubber blanket 102 of scavenge port 101 outer setting, if rubber blanket 102 not perforates, scavenge port 101 is blocked, and rubber blanket 102 central parts of this device are offered an air hole 103, valve 4 rotations are urged to after rubber blanket 102, and air hole 103 is blocked, and rubber blanket 102 is also blocked the air inlet duct on valve 4 401, because the radius of air hole 103 is less than the distance of air inlet duct 401 to valve 4 center lines.Be that after rubber blanket 102 is fitted with valve 4, valve 4 rotates howsoever, the position not all being communicated with between air inlet duct 401 and air hole 103, the sealing of so having accomplished seal casinghousing 1; And need to ventilate time, valve 4 is away from rubber blanket 102, air enters in seal casinghousing 1 through air hole 103, scavenge port 101, air channel 401, protective cover 3 successively, has formed ventilation.It is to protect motor 2 and valve 4 that a protective cover 3 is set, and prevents and internal components bumps against, and spring 5 is set, and is to have ensured that to a great extent valve 4 presses close to after rubber blanket 102, there will not be the phenomenon of vibrations reversion, has further ensured sealing.Spring 5 is fixedly connected with respectively and between motor 2, protective cover 3, prevents motor 2 transfers.Spring 5 provides elastic force, make valve 4 nonreversible, like this in the time of sealing, do not have flame string and go out housing 1, do not have combustion gas and enter housing 1 yet, when but valve 4 is opened, spring 5 is larger to the elastic force of valve 4, after valve 4 is shaken, be easy to inner rotary, thereby scavenge port 101 is stopped up, on this device, be provided with a baffle plate 701, in the time that valve 4 does not block up scavenge port, baffle plate 701 is blocked the outside shift position of valve 4, valve 4 must not be moved, and while needing valve 4 to move, because be provided with pressure transducer on baffle plate 701, when sensing certain force, pressure transducer just can transmit a signal to cylinder 703, usually valve 4 shakes the power that pressure transducer is caused, pressure transducer is can transmitted signal, cylinder 703 is controlled barrier plate 701 and is allowed open walk, valve 4 is outwards mobile, scavenge port is blocked.And in this device, baffle plate 701 radiuses are less than the distance of air inlet duct 401 to valve 4 center lines, this distance is also the bee-line of air inlet duct 401 to valve 4 center lines, be in baffle plate 701 center lines and valve 4 when line overlap, can air inlet duct 401 not had and be stopped, and valve 4 Front-end Design become round table-like, facilitate the movement of baffle plate 701.
Further, on above-mentioned seal casinghousing 1, be provided with a handle 6, facilitate staff to carry this device.
Claims (2)
1. anti-clogging gas detector housing, it is characterized in that, comprise a seal casinghousing (1), described seal casinghousing (1) adopts crystalline ceramics to make, on described seal casinghousing (1), be provided with a scavenge port (101), scavenge port (101) locates to be provided with a valve (4), valve (4) is also for pottery is made, valve (4) is cylindric, valve (4) coordinates with scavenge port (101) size, and both are threaded, valve (4) is by inner motor (2) driven rotary of seal casinghousing (1), on the sidewall of valve (4), be provided with at least one air inlet duct (401), described air inlet duct (401) bearing of trend is axial consistent with valve (4), and air inlet duct (401) extends to the other end away from one end of motor (2) from valve (4), the length of air inlet duct (401) is less than the length of valve (4), the control end of motor (2) is connected on a spark detector in seal casinghousing (1), on the inwall of described seal casinghousing (1), be provided with a protective cover (3), motor (2) is positioned at protective cover (3), the perisporium of protective cover (3) is Openworks shape, between the afterbody of motor (2) and protective cover (3), be provided with a spring (5), valve (4), motor (2), spring (5) three's center line overlaps, described scavenge port (101) is fixed with a rubber blanket (102) near the outer one end of seal casinghousing (1), the center of rubber blanket (102) is provided with an air hole (103), air inlet duct (401) is greater than the radius of air hole (103) to the distance of valve (4) center line, also comprise a retention device (7), retention device (7) comprises baffle plate (701), connecting rod (702) and cylinder (703), described baffle plate (701) is positioned at scavenge port (101), it is perpendicular to the bearing of trend of scavenge port (101), baffle plate (701) is connected on cylinder (703) by connecting rod (702), baffle plate (701) is driven edge perpendicular to moving on scavenge port (101) bearing of trend by cylinder (703), baffle plate (701) is in the form of annular discs, cylinder (703) can drive baffle plate (701) to leave scavenge port (101), also can make the center line of baffle plate (701) and the middle line overlap of scavenge port (101), valve (4) is during towards the end face in outside and baffle plate (701) laminating, air inlet duct (401) exposes in seal casinghousing (1), the radius of baffle plate (701) is less than the distance of air inlet duct (401) to valve (4) center line, the side of baffle plate (701) in seal casinghousing (1) is provided with a pressure transducer, the output terminal of this pressure transducer is connected to the control end of cylinder (703), described valve (4) is provided with a round platform (402) on the end face in outside, the radius of the end face of round platform (402) is greater than the radius of air hole (103).
2. anti-clogging gas detector housing according to claim 1, is characterized in that: on described seal casinghousing (1), be provided with a handle (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420419794.0U CN203964937U (en) | 2014-07-29 | 2014-07-29 | Anti-clogging gas detector housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420419794.0U CN203964937U (en) | 2014-07-29 | 2014-07-29 | Anti-clogging gas detector housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203964937U true CN203964937U (en) | 2014-11-26 |
Family
ID=51925505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420419794.0U Withdrawn - After Issue CN203964937U (en) | 2014-07-29 | 2014-07-29 | Anti-clogging gas detector housing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203964937U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132683B (en) * | 2014-07-29 | 2016-08-17 | 成都国光电子仪表有限责任公司 | A kind of blockage resisting housing being applied to gas detector |
-
2014
- 2014-07-29 CN CN201420419794.0U patent/CN203964937U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132683B (en) * | 2014-07-29 | 2016-08-17 | 成都国光电子仪表有限责任公司 | A kind of blockage resisting housing being applied to gas detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141126 Effective date of abandoning: 20160817 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20141126 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |