CN205506627U - Filter paper closing device of beta - ray method monitoring of atmospheric particulates equipment - Google Patents
Filter paper closing device of beta - ray method monitoring of atmospheric particulates equipment Download PDFInfo
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- CN205506627U CN205506627U CN201620134280.XU CN201620134280U CN205506627U CN 205506627 U CN205506627 U CN 205506627U CN 201620134280 U CN201620134280 U CN 201620134280U CN 205506627 U CN205506627 U CN 205506627U
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- sampling tube
- supporting block
- upper supporting
- wedge
- filter paper
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Abstract
The utility model discloses a filter paper closing device of beta - ray method monitoring of atmospheric particulates equipment, including the riser, the last tray that is fixed with relative up -down in the front of riser and tray down, there is at least one sampling pipe vertical running through on last tray, on each sampling pipe all the cover be equipped with and press cover and compression spring, under compression spring's effect, the top surface of the lower extreme of sampling pipe and lower tray is to tightly, be fixed with step motor at the back of riser, be connected with the lead screw on step motor's output shaft, the cover is equipped with the nut on the lead screw, is provided with on the nut and presses set wedge that corresponds, puts processing in and has the inclined plane of mutually supporting with pressing at the wedge, when step motor rotates, presses that overlap and the sampling pipe reciprocates under wedge and compression spring's effect. Thereby provide a simple structure, filter paper closing device of beta - ray method monitoring of atmospheric particulates equipment that occupation space is little, not only the motion is reliable, the displacement control is accurate, is applicable to delicate multiple -pass monitor moreover more.
Description
Technical field
This utility model belongs to air detection equipment technical field, specifically, particularly to a kind of β ray
The filter paper hold down gag of method atmosphere particle monitoring equipment.
Background technology
Atmospheric particulates are dispersed in solid-state or the general name of liquid particles shape material in air.Atmospheric particulates grain
Varying in size of footpath, the position being inhaled into and being deposited on respiratory system is different, and the harm to body is the most variant.
It is trapped in upper airway more than 5 μm more, is trapped in bronchioles and alveolar less than 5 μm more.Along with
People increasingly pay close attention to Atmospheric particulates healthhazard, and the monitoring technology of Atmospheric particulates is the most increasingly entered
Step.
Existing atmosphere particle monitoring means mainly have: β attenuation sensors, trace oscillating balance method and light
Scattering method.Wherein, the particulate matter in air is mainly attached on filter paper by β attenuation sensors, then measures
The loss after this filter paper of the β ray, thus calculate the mass concentration of particulate matter.Its concrete measurement process is:
It is Beta-ray that the P1 point that the blank filter paper specified is placed between β source and detector is measured by blank filter paper
Intensity level also preserves, and then the filter paper in this region moves on to another P2 specified point and carries out bleeding sampling in filter
Dust spot is left on paper, the P1 point after sampling, the filter paper containing dust spot being moved back between β source and detector, then
Measure its Beta-ray intensity level and preserve, finally by being calculated the number relevant with atmosphere particle concentration
According to, thus complete one-shot measurement；Before measuring, filter paper then needs paper feed certain distance next time.
During above-mentioned measurement, the specific region of filter paper needs to move back and forth between P1 point and P2 point,
And carry out bleeding sampling time need to compress filter paper to make the particulate matter in air leave dirt in the specific region of filter paper
Speckle；Therefore, β ray method atmosphere particulate matter monitoring instrument is equipped with filter paper hold down gag, is used for unclamping and pressing
Tight filter paper.The patent of invention of Application No. " 201010518551.9 " discloses one " β ray method PM10
On-line computing model sampling tube lowering or hoisting gear ", give presently the most advanced β ray method atmosphere particle monitoring
Instrument filter paper hold down gag, main employing torsion spring eccentric stiffener realizes the lifting of sampling tube and the compression of filter paper, tool
Have that automaticity is high, operate steadily, the advantage of good sealing effect, but its structure is complicated, take up room
Greatly, the multi-path monitor of precision it is unsuitable for.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of simple in construction, take up room little β
The filter paper hold down gag of ray method atmosphere particle monitoring equipment so that it is be applicable to more accurate multi-path prison
Survey instrument.
The technical solution of the utility model is as follows: the filter paper pressure of a kind of β ray method atmosphere particle monitoring equipment
Tight device, including riser, lower tray, upper supporting block, motor, screw mandrel, nut, wedge, gland,
Compression spring and sampling tube, described riser is vertically arranged, and is fixed with pop-up opposing upper and lower in the front of riser
Block and lower tray, leave gap between described upper supporting block and lower tray；Described upper supporting block vertically runs through
There is at least one sampling tube, each described sampling tube is respectively and fixedly provided with gland, each sampling tube is also set with
There is the compression spring being positioned at above gland, under the effect of described compression spring, the lower end of sampling tube and subiculum
The end face of block pushes against；It is fixed with motor, at the output shaft of described motor at the back side of described riser
Upper connection has screw mandrel, is set with nut on described screw mandrel, is provided with corresponding with gland on described nut
Wedge, is machined with, on described wedge with gland, the inclined-plane cooperated, when motor rotates,
Described wedge moves forward and backward along screw mandrel, and described gland and sampling tube are under the wedge effect with compression spring
Move up and down.
This utility model passes through step motor drive leading screw and nut mechanism, makes wedge interact also with gland
Drive sampling tube moves up and down, thus the β ray method air providing a kind of simple in construction, taking up room little
The filter paper hold down gag of particle monitoring equipment, not only motion is reliable, Bit andits control is accurate, and suitableeer
For accurate multi-path monitor, the monitor for exploitation multi-path further provides technical support.
Being provided with chamber in described upper supporting block, described compression spring, gland, nut and wedge are respectively positioned on
In the chamber of tray, described screw mandrel stretches in the chamber of upper supporting block the most from back to front.So set in upper supporting block
Putting chamber, and be placed in by parts thereof in this chamber, the structure making entirety is compacter, takes up room more
Little.And, it is to avoid outside this parts thereof is exposed to, it is to avoid dust, foreign material etc. affect screw mandrel, spiral shell
Interaction between mother, gland, wedge and compression spring, is conducive to improving sampling tube displacement further
Accuracy.
The end face of sleeve, described sleeve and upper supporting block it is fitted with between described sampling tube and the top of upper supporting block
Fixing, between the inwall and the outer wall of sampling tube of sleeve, leave gap.So arrange sleeve to advantageously reduce
Abrasion between sampling tube and upper supporting block, is conducive to extending sampling tube and the service life of upper supporting block.
As preferably, about described sampling tube, it is arranged side by side with three, described lower tray has and samples
Pipe lower nozzle three pores one to one；The bottom of described upper supporting block also have with sampling tube about side by side
The detection mouth arranged, the bore of described detection mouth is consistent with the bore of sampling tube lower nozzle.It is easy to monitor simultaneously
Three parameters, improve monitoring efficiency.
Beneficial effect: this utility model passes through step motor drive leading screw and nut mechanism, makes wedge and gland
Interact and drive sampling tube to move up and down, thus provide a kind of simple in construction, take up room little β
The filter paper hold down gag of ray method atmosphere particle monitoring equipment, not only motion is reliable, Bit andits control is accurate,
And it is more applicable for the multi-path monitor of precision, have and be skillfully constructed, produce easily and production cost is low
Etc. feature.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the A-A sectional view of Fig. 1.
Fig. 4 is the B-B sectional view of Fig. 1.
In figure, labelling is as follows: sampling tube 1, upper supporting block 2, detection mouth 2a, lower tray 3, pore 3a, riser
4, motor 5, sleeve 6, screw mandrel 7, nut 8, wedge 9, gland 10 and compression spring 11.
Detailed description of the invention
It is exemplary for describing embodiment below with reference to accompanying drawing, it is intended to explain this utility model, and can not
It is interpreted as restriction of the present utility model.Embodiment of the present utility model, described enforcement are described below in detail
Illustration example is shown in the drawings, represents same or similar unit with same or similar label the most from start to finish
Part or there is the element of same or like function.In description of the present utility model, it should be noted that right
In the noun of locality, if any term " on ", D score, "front", "rear", "left", "right", " vertically ", " level ",
" push up ", " end ", " interior ", the indicating position such as " outward " and position relationship are based on orientation shown in the drawings or position
Put relation, be for only for ease of and describe this utility model and simplify description rather than instruction or imply indication
Device or element must have specific orientation, construct with particular orientation and operation, should not be construed as limiting this
The concrete protection domain of utility model.
In this utility model, except as otherwise clear stipulaties and restriction, " assemble " if any term, " being connected ", " even
Connect ", the term such as " fixing " should go to understand as broad sense, connect for example, it may be fixing, it is also possible to be removable
Unload connection, or be integrally connected；Can also be to be mechanically connected, it is also possible to be electrical connection；It can be direct phase
Even, it is also possible to be to be connected by intermediary, can be that two element internals are connected.General for this area
For logical technical staff, above-mentioned term specifically containing in this utility model can be understood as the case may be
Justice.
In utility model, unless otherwise prescribed and limit, fisrt feature second feature it " on " or it
D score can include that the first and second features directly contact, it is also possible to includes that the first and second features are not straight
Contact but by the other characterisation contact between them.And, fisrt feature second feature " on "
" above " includes that fisrt feature directly over second feature and oblique upper, or only represents fisrt feature
Level height is higher than the height of second feature.Fisrt feature includes in second feature " under " and " below "
Fisrt feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second
Feature.
Below in conjunction with the accompanying drawings, by detailed description of the invention of the present utility model is further described, make this
Technical scheme and the beneficial effect thereof of utility model are clearer, clear and definite.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, this utility model includes riser 4, lower tray 3, pop-up
Block 2, motor 5, screw mandrel 7, nut 8, wedge 9, gland 10, compression spring 11 and sampling tube
1.Described riser 4 is vertically arranged, and is fixed with upper supporting block 2 opposing upper and lower and lower tray in the front of riser 4
3, described upper supporting block 2 and the equal rectangular-blocklike of lower tray 3, stay between described upper supporting block 2 and lower tray 3
There is gap.Described upper supporting block 2 vertically runs through and has at least one sampling tube 1, on each described sampling tube 1
It is respectively and fixedly provided with gland 10, each sampling tube 1 is also set with the compression spring 11 being positioned at above gland 10,
Under the effect of described compression spring 11, the lower end of sampling tube 1 pushes against with the end face of lower tray 3.Described
The back side of riser 4 is fixed with motor 5, and connecting on the output shaft of described motor 5 has screw mandrel 7,
Described screw mandrel 7 is set with nut 8, described nut 8 is provided with the wedge corresponding with gland 10
9, it is machined with, on gland 10, the inclined-plane cooperated at described wedge 9.When motor 5 rotates,
Described wedge 9 moves forward and backward along screw mandrel 7, and described wedge 9 cooperates with the inclined-plane of gland 10, makes
Described gland 10 and sampling tube 1 move up and down under the effect of compression spring 11 at wedge 9.With three
The wedge 9 that gland 10 coordinates can be an entirety, it is also possible to is separate three, does not limits；And
And wedge 9 can with nut 8 one, it is also possible to be each to be fixedly linked with nut 8.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, in described upper supporting block 2, chamber, described compression bullet it are provided with
Spring 11, gland 10, nut 8 and wedge 9 are respectively positioned in the chamber of upper supporting block 2, and described screw mandrel 7 is also certainly
Stretch into before backward in the chamber of upper supporting block 2.It is fitted with between described sampling tube 1 and the top of upper supporting block 2
Sleeve 6, the end face of described sleeve 6 and upper supporting block 2 fixes, at the outer wall of inwall and the sampling tube 1 of sleeve 6
Between leave gap.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the preferred described sampling tube about 1 of the present embodiment is arranged side by side
There are three, described lower tray 3 have and sampling tube 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 tube about 1, described detection mouth
The bore of 2a is consistent with the bore of sampling tube 1 lower nozzle.
Claims (4)
1. the filter paper hold down gag of a β ray method atmosphere particle monitoring equipment, it is characterised in that: include
Riser, lower tray, upper supporting block, motor, screw mandrel, nut, wedge, gland, compression spring and
Sampling tube, described riser is vertically arranged, and is fixed with upper supporting block opposing upper and lower and lower tray in the front of riser,
Gap is left between described upper supporting block and lower tray；Vertically running through on described upper supporting block has at least one to adopt
Sample pipe, each described sampling tube is respectively and fixedly provided with gland, is also set with and is positioned on gland on each sampling tube
The compression spring of side, under the effect of described compression spring, the lower end of sampling tube pushes against with the end face of lower tray；
Being fixed with motor at the back side of described riser, connecting on the output shaft of described motor has screw mandrel,
Described screw mandrel is set with nut, described nut is provided with the wedge corresponding with gland, described
Being machined with, on wedge and gland, the inclined-plane cooperated, when motor rotates, described wedge is along silk
Bar moves forward and backward, and described gland and sampling tube move up and down under the wedge effect with compression spring.
The filter paper hold down gag of β ray method atmosphere particle monitoring equipment the most according to claim 1, its
It is characterised by: being provided with chamber in described upper supporting block, described compression spring, gland, nut and wedge are equal
Being positioned at the chamber of upper supporting block, described screw mandrel stretches in the chamber of upper supporting block the most from back to front.
The filter paper hold down gag of β ray method atmosphere particle monitoring equipment the most according to claim 2, its
It is characterised by: between described sampling tube and the top of upper supporting block, be fitted with sleeve, described sleeve and upper supporting block
End face fix, between the inwall and the outer wall of sampling tube of sleeve, leave gap.
4. compress according to the filter paper of β ray method atmosphere particle monitoring equipment described in claim 1 or 2 or 3
Device, it is characterised in that: be arranged side by side with three about described sampling tube, described lower tray has with
Sampling tube lower nozzle three pores one to one；The bottom of described upper supporting block also have with sampling tube about
The detection mouth being arranged side by side, the bore of described detection mouth is consistent with the bore of sampling tube lower nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620134280.XU CN205506627U (en) | 2016-02-23 | 2016-02-23 | Filter paper closing device of beta - ray method monitoring of atmospheric particulates equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620134280.XU CN205506627U (en) | 2016-02-23 | 2016-02-23 | Filter paper closing device of beta - ray method monitoring of atmospheric particulates equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205506627U true CN205506627U (en) | 2016-08-24 |
Family
ID=56724308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620134280.XU Active CN205506627U (en) | 2016-02-23 | 2016-02-23 | Filter paper closing device of beta - ray method monitoring of atmospheric particulates equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205506627U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105588791A (en) * | 2016-02-23 | 2016-05-18 | 中煤科工集团重庆研究院有限公司 | Filter paper pressing device of atmospheric particulate monitor based on beta-ray method |
| CN109085026A (en) * | 2018-10-22 | 2018-12-25 | 武汉怡特环保科技有限公司 | A kind of particle sampling device and β ray method atmosphere particle monitoring equipment |
-
2016
- 2016-02-23 CN CN201620134280.XU patent/CN205506627U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105588791A (en) * | 2016-02-23 | 2016-05-18 | 中煤科工集团重庆研究院有限公司 | Filter paper pressing device of atmospheric particulate monitor based on beta-ray method |
| CN109085026A (en) * | 2018-10-22 | 2018-12-25 | 武汉怡特环保科技有限公司 | A kind of particle sampling device and β ray method atmosphere particle monitoring equipment |
| CN109085026B (en) * | 2018-10-22 | 2024-03-19 | 武汉怡特环保科技有限公司 | Particulate matter sampling device and beta-ray method atmospheric particulate matter monitoring equipment |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |