CN105588791A - Filter paper pressing device of atmospheric particulate monitor based on beta-ray method - Google Patents
Filter paper pressing device of atmospheric particulate monitor based on beta-ray method Download PDFInfo
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- CN105588791A CN105588791A CN201610098360.9A CN201610098360A CN105588791A CN 105588791 A CN105588791 A CN 105588791A CN 201610098360 A CN201610098360 A CN 201610098360A CN 105588791 A CN105588791 A CN 105588791A
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- China
- Prior art keywords
- sampling pipe
- upper supporting
- supporting block
- filter paper
- gland
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/0606—Investigating concentration of particle suspensions by collecting particles on a support
- G01N15/0637—Moving support
Abstract
The invention discloses a filter paper pressing device of an atmospheric particulate monitor based on a beta-ray method. The filter paper pressing device comprises a vertical plate, wherein an upper support block and a lower support block which are opposite to each other are fixedly arranged on the front surface of the vertical plate; at least one sampling pipe vertically penetrates through the upper support block; each sampling pipe is sleeved by a pressing sleeve and a compression spring; under the action of the compression spring, the lower end of the sampling pipe props against the top surface of the lower support block; the back surface of the vertical plate is fixedly provided with a stepping motor; an output shaft of the stepping motor is connected with a screw rod; the screw rod is sleeved by a nut; the nut is provided with a wedge block corresponding to the pressing sleeve; the wedge block and the pressing sleeve are provided with mutually matched oblique planes; when the stepping motor rotates, the pressing sleeve and the sampling pipe move up and down under the action of the wedge block and the compression spring. The filter paper pressing device of the atmospheric particulate monitor based on the beta-ray method is simple in structure and small in occupied space, not only is reliable in movement and accurate in displacement control, but also is applicable to precise multi-pass monitors.
Description
Technical field
The invention belongs to atmosphere checkout equipment technical field, specifically, particularly a kind of β ray method is largeThe filter paper hold down gag of aerated particle thing monitor.
Background technology
Atmospheric particulates are to be dispersed in general name solid-state in atmosphere or liquid particles shape material. Atmospheric particulates grainVarying in size of footpath, is inhaled into and is deposited on the position difference of respiratory system, also variant to the harm of body.Be greater than the upper airway that is trapped in of 5 μ m, what be less than 5 μ m is trapped in bronchiole and alveolar more more. Along withPeople more and more pay close attention to Atmospheric particulates healthhazard, and the monitoring technology of Atmospheric particulates is also more and more enteredStep.
Existing atmosphere particle monitoring means mainly contain: β attenuation sensors, micro-oscillating balance method and lightScattering method. Wherein, β attenuation sensors is mainly that the particle in atmosphere is attached on filter paper, then measuresThe loss of β ray after this filter paper, thereby the mass concentration of count particles thing. Its concrete measuring process is:The P1 point measurement that the blank filter paper of appointment is placed between β source and detector passes through the Beta-ray of blank filter paperIntensity level is also preserved, bleed sampling filtering of the P2 point that then filter paper in this region is moved on to another appointmentOn paper, leave dust spot, after sampling, the filter paper that contains dust spot is moved back into the P1 point between β source and detector, thenMeasure its Beta-ray intensity level and preserve, finally by calculating the number relevant with atmosphere particle concentrationAccording to, thereby complete one-shot measurement; Before measuring, filter paper needs paper feed certain distance next time.
In above-mentioned measuring process, the specific region of filter paper need to move back and forth between P1 point and P2 point,Filter paper need to be compressed and make the particle in atmosphere leave dirt in the specific region of filter paper while sampling and bleedSpot; Therefore, on β ray method atmosphere particulate matter monitoring instrument, be equipped with filter paper hold down gag, for unclamping and pressingTight filter paper. The patent of invention that application number is " 201010518551.9 " discloses a kind of " β ray method PM10On-line monitoring instrument sampling pipe lowering or hoisting gear ", provide at present advanced person's β ray method atmosphere particle monitoring the mostInstrument filter paper hold down gag, mainly adopts torsion spring eccentric stiffener to realize the lifting of sampling pipe and the compression of filter paper, toolHave automaticity high, operate steadily, the advantage of good sealing effect, but its complex structure, take up roomBe unsuitable for accurate multi-path monitor greatly.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of simple in structure, take up room β ray littleThe filter paper hold down gag of method atmosphere particulate matter monitoring instrument, makes it be applicable to more accurate multi-path monitor.
Technical scheme of the present invention is as follows: a kind of filter paper hold down gag of β ray method atmosphere particulate matter monitoring instrument,Comprise riser, lower tray, upper supporting block, stepper motor, screw mandrel, nut, wedge, gland, compression bulletSpring and sampling pipe, described riser vertically arranges, the front of riser be fixed with upper supporting block opposing upper and lower and underTray leaves gap between described upper supporting block and lower tray; On described upper supporting block, be vertically penetrated with at leastA sampling pipe, is all fixed with gland on sampling pipe described in each, on each sampling pipe, be also set with and be positioned atThe Compress Spring of gland top, under the effect of described Compress Spring, the top of the lower end of sampling pipe and lower trayFace pushes against; The back side at described riser is fixed with stepper motor, on the output shaft of described stepper motor, connectsThere is screw mandrel, on described screw mandrel, be set with nut, on described nut, be provided with the wedge corresponding with gland,On described wedge and gland, be processed with the inclined-plane cooperatively interacting, in the time that stepper motor rotates, described wedge shapePiece moves forward and backward along screw mandrel, and described gland and sampling pipe move up and down under the effect of wedge and Compress Spring.
The present invention drives leading screw and nut mechanism by stepper motor, makes wedge and gland interact and driveSampling pipe moves up and down, thus provide a kind of simple in structure, take up room β ray method airborne particulate littleThe filter paper hold down gag of thing monitor, not only motion is reliable, displacement control is accurate, and is more applicable for essenceClose multi-path monitor, for the monitor of further developing multi-path provides technical support.
In described upper supporting block, be provided with chamber, described Compress Spring, gland, nut and wedge are all positioned atIn the chamber of tray, described screw mandrel also stretches in the chamber of upper supporting block from back to front. In upper supporting block, establish like thisPut chamber, and part parts are placed in this chamber, make overall structure compacter, take up room moreLittle. And, avoided outside these part parts are exposed to, having avoided dust, foreign material etc. to affect screw mandrel, spiral shellInteraction between mother, gland, wedge and Compress Spring, is further conducive to improve sampling pipe displacementAccuracy.
Between described sampling pipe and the top of upper supporting block, be fitted with sleeve, the end face of described sleeve and upper supporting blockFixing, between the inwall of sleeve and the outer wall of sampling pipe, leave gap. Sleeve is set to be like this conducive to reduceWearing and tearing between sampling pipe and upper supporting block, are conducive to extend service life of sampling pipe and upper supporting block.
As preferably, about described sampling pipe, be arranged side by side with three, on described lower tray, have and samplePipe lower nozzle is three pores one to one; Also have in the bottom of described upper supporting block with about sampling pipe side by sideThe detection mouth of arranging, the bore of described detection mouth is consistent with the bore of sampling pipe lower nozzle. Be convenient to monitor simultaneouslyThree parameters, improve monitoring efficiency.
Beneficial effect: the present invention drives leading screw and nut mechanism by stepper motor, makes wedge and gland mutualAct on and drive sampling pipe to move up and down, thus provide a kind of simple in structure, take up room β ray littleThe filter paper hold down gag of method atmosphere particulate matter monitoring instrument, not only motion is reliable, displacement control is accurate, Er QiegengAdd and be applicable to accurate multi-path monitor, there is the features such as be skillfully constructed, produce easily and production cost is low.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the A-A cutaway view of Fig. 1.
Fig. 4 is the B-B cutaway view of Fig. 1.
In figure, mark is as follows: sampling pipe 1, upper supporting block 2, a detection mouthful 2a, lower tray 3, pore 3a, riser4, stepper motor 5, sleeve 6, screw mandrel 7, nut 8, wedge 9, gland 10 and Compress Spring 11.
Detailed description of the invention
Be exemplary below by embodiment is described with reference to the drawings, be intended to explain the present invention, and can not understandFor limitation of the present invention. Describe embodiments of the invention below in detail, described embodiment example is at accompanying drawingShown in, wherein represent same or similar element or have identical with same or similar label from start to finishOr the element of similar functions. In description of the invention, it should be noted that, for the noun of locality, if any artLanguage " on ", D score, 'fornt', 'back', " left side ", " right side ", " vertically ", " level ", " top ", " end ",The indicating position such as " interior ", " outward " and position relationship are based on orientation shown in the drawings or position relationship, are onlyFor the ease of narration the present invention and simplified characterization, instead of device or the element of instruction or hint indication must toolsThere is specific orientation, construct and operation with particular orientation, should not be construed as restriction concrete protection model of the present inventionEnclose.
In the present invention, except as otherwise clearly specifying and limiting, if any term " assembling ", " being connected ", " connection ",The term such as " fixing " should go to understand as broad sense, for example, can be to be fixedly connected with, and can be also detachably to connectConnect, or connect integratedly; Also can be mechanical connection, can be also electrical connection; Can be to be directly connected,Also can be to be connected by intermediary, can be that two element internals are connected. For the common skill in this areaArt personnel, can understand above-mentioned term concrete meaning in the present invention as the case may be.
In invention, unless otherwise prescribed and limit, First Characteristic Second Characteristic it " on " or D scoreCan comprise that the first and second features directly contact, also can comprise that the first and second features are not direct contactsBut by the other feature contact between them. And, First Characteristic Second Characteristic " on " and " onFace " comprise First Characteristic directly over Second Characteristic and oblique upper, or be only to represent that First Characteristic level is highDegree is higher than the height of Second Characteristic. First Characteristic comprises the first spy at Second Characteristic " under " and " below "Levy under Second Characteristic or tiltedly, or only represent that First Characteristic level height is lower than Second Characteristic.
Below in conjunction with accompanying drawing, by the specific embodiment of the present invention is further described, make the present inventionTechnical scheme and beneficial effect thereof clearer, clear and definite.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the present invention includes riser 4, lower tray 3, upper supporting block 2,Stepper motor 5, screw mandrel 7, nut 8, wedge 9, gland 10, Compress Spring 11 and sampling pipe 1. InstituteState riser 4 and vertically arrange, be fixed with upper supporting block 2 opposing upper and lower and lower tray 3 in the front of riser 4, instituteState upper supporting block 2 and all rectangular bulks of lower tray 3, between leaving between described upper supporting block 2 and lower tray 3Gap. On described upper supporting block 2, be vertically penetrated with at least one sampling pipe 1, all solid on sampling pipe 1 described in eachSurely there is gland 10, on each sampling pipe 1, be also set with the Compress Spring 11 being positioned at above gland 10,Under the effect of described Compress Spring 11, the end face of the lower end of sampling pipe 1 and lower tray 3 pushes against. Described verticalThe back side of plate 4 is fixed with stepper motor 5, is connected with screw mandrel 7 on the output shaft of described stepper motor 5,On described screw mandrel 7, be set with nut 8, on described nut 8, be provided with the wedge corresponding with gland 10 9,On described wedge 9 and gland 10, be processed with the inclined-plane cooperatively interacting. In the time that stepper motor 5 rotates, instituteState wedge 9 and move forward and backward along screw mandrel 7, described wedge 9 cooperatively interacts with the inclined-plane of gland 10, makes instituteState gland 10 and sampling pipe 1 moves up and down under the effect of wedge 9 and Compress Spring 11. With three pressuresThe wedge 9 that cover 10 coordinates can be an entirety, can be also separately three, does not limit; AndWedge 9 can with nut 8 one, can be to be also fixedly linked with nut 8 separately.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, in described upper supporting block 2, be provided with chamber, described compression bulletSpring 11, gland 10, nut 8 and wedge 9 are all positioned at the chamber of upper supporting block 2, and described screw mandrel 7 also certainlyBefore backward, stretch in the chamber of upper supporting block 2. Between described sampling pipe 1 and the top of upper supporting block 2, be fitted withSleeve 6, described sleeve 6 is fixed with the end face of upper supporting block 2, at the inwall of sleeve 6 and the outer wall of sampling pipe 1Between leave gap.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the preferred described sampling pipe of the present embodiment 1 left and right is arranged side by sideThere are three, on described lower tray 3, have and sampling pipe 1 lower nozzle three pore 3a one to one. ?The bottom of described upper supporting block 2 also has the detection mouth 2a being arranged side by side with sampling pipe 1 left and right, described detection mouthThe bore of 2a is consistent with the bore of sampling pipe 1 lower nozzle.
Claims (4)
1. a filter paper hold down gag for β ray method atmosphere particulate matter monitoring instrument, is characterized in that: comprise verticalPlate, lower tray, upper supporting block, stepper motor, screw mandrel, nut, wedge, gland, Compress Spring and adoptSample pipe, described riser is vertically arranged, is fixed with upper supporting block opposing upper and lower and lower tray in the front of riser,Between described upper supporting block and lower tray, leave gap; On described upper supporting block, being vertically penetrated with at least one adoptsSample pipe, is all fixed with gland on sampling pipe described in each, on each sampling pipe, be also set with and be positioned on glandThe Compress Spring of side, under the effect of described Compress Spring, the end face of the lower end of sampling pipe and lower tray pushes against;The back side at described riser is fixed with stepper motor, on the output shaft of described stepper motor, is connected with screw mandrel,On described screw mandrel, be set with nut, on described nut, be provided with the wedge corresponding with gland, describedOn wedge and gland, be processed with the inclined-plane cooperatively interacting, in the time that stepper motor rotates, described wedge is along silkBar moves forward and backward, and described gland and sampling pipe move up and down under the effect of wedge and Compress Spring.
2. the filter paper hold down gag of β ray method atmosphere particulate matter monitoring instrument according to claim 1, its spyLevy and be: in described upper supporting block, be provided with chamber, the equal position of described Compress Spring, gland, nut and wedgeIn the chamber of upper supporting block, described screw mandrel also stretches in the chamber of upper supporting block from back to front.
3. the filter paper hold down gag of β ray method atmosphere particulate matter monitoring instrument according to claim 2, its spyLevy and be: between described sampling pipe and the top of upper supporting block, be fitted with sleeve, described sleeve and upper supporting blockEnd face is fixed, and between the inwall of sleeve and the outer wall of sampling pipe, leaves gap.
4. compress dress according to the filter paper of β ray method atmosphere particulate matter monitoring instrument described in claim 1 or 2 or 3Put, it is characterized in that: described sampling pipe left and right is arranged side by side with three, on described lower tray, has and adoptsSample pipe lower nozzle is three pores one to one; Also have in the bottom of described upper supporting block with about sampling pipe alsoThe detection mouth of putting of arranging, the bore of described detection mouth is consistent with the bore of sampling pipe lower nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610098360.9A CN105588791A (en) | 2016-02-23 | 2016-02-23 | Filter paper pressing device of atmospheric particulate monitor based on beta-ray method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610098360.9A CN105588791A (en) | 2016-02-23 | 2016-02-23 | Filter paper pressing device of atmospheric particulate monitor based on beta-ray method |
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| Publication Number | Publication Date |
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| CN105588791A true CN105588791A (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610098360.9A Pending CN105588791A (en) | 2016-02-23 | 2016-02-23 | Filter paper pressing device of atmospheric particulate monitor based on beta-ray method |
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| CN (1) | CN105588791A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709840A (en) * | 2018-07-28 | 2018-10-26 | 太原海纳辰科仪器仪表有限公司 | A kind of β rays particle concentration monitor |
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| JP2008261712A (en) * | 2007-04-11 | 2008-10-30 | Kimoto Denshi Kogyo Kk | System for measuring suspended particular substance |
| CN201542756U (en) * | 2009-11-26 | 2010-08-11 | 谭建铭 | Lifting device for digital intelligent diagnosis system |
| CN101975684A (en) * | 2010-10-25 | 2011-02-16 | 安徽蓝盾光电子股份有限公司 | Sampling pipe lifting device of beta-ray method PM10 (Particulate Matter 10) on-line monitor |
| CN104150411A (en) * | 2013-05-14 | 2014-11-19 | 黄石市华天自动化设备有限公司 | Traction lifting device of self-walking guide trolley |
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| CN105043822A (en) * | 2014-12-31 | 2015-11-11 | 江苏天瑞仪器股份有限公司 | Atmospheric particulates collection and measurement device |
| CN205506627U (en) * | 2016-02-23 | 2016-08-24 | 中煤科工集团重庆研究院有限公司 | Filter paper closing device of beta - ray method monitoring of atmospheric particulates equipment |
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2016
- 2016-02-23 CN CN201610098360.9A patent/CN105588791A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008261712A (en) * | 2007-04-11 | 2008-10-30 | Kimoto Denshi Kogyo Kk | System for measuring suspended particular substance |
| CN201542756U (en) * | 2009-11-26 | 2010-08-11 | 谭建铭 | Lifting device for digital intelligent diagnosis system |
| CN101975684A (en) * | 2010-10-25 | 2011-02-16 | 安徽蓝盾光电子股份有限公司 | Sampling pipe lifting device of beta-ray method PM10 (Particulate Matter 10) on-line monitor |
| CN104150411A (en) * | 2013-05-14 | 2014-11-19 | 黄石市华天自动化设备有限公司 | Traction lifting device of self-walking guide trolley |
| CN204359651U (en) * | 2014-12-31 | 2015-05-27 | 江苏天瑞仪器股份有限公司 | Particle mass concentration and elemental composition dual-beam automatic detection device in gas |
| CN105043822A (en) * | 2014-12-31 | 2015-11-11 | 江苏天瑞仪器股份有限公司 | Atmospheric particulates collection and measurement device |
| CN205506627U (en) * | 2016-02-23 | 2016-08-24 | 中煤科工集团重庆研究院有限公司 | Filter paper closing device of beta - ray method monitoring of atmospheric particulates equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709840A (en) * | 2018-07-28 | 2018-10-26 | 太原海纳辰科仪器仪表有限公司 | A kind of β rays particle concentration monitor |
| CN108709840B (en) * | 2018-07-28 | 2024-04-05 | 太原海纳辰科仪器仪表有限公司 | Beta-ray particulate matter concentration monitor |
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Application publication date: 20160518 |
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