CN110006800A - Particulate matter aerosol diluter and dilution process - Google Patents
Particulate matter aerosol diluter and dilution process Download PDFInfo
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- CN110006800A CN110006800A CN201910194773.0A CN201910194773A CN110006800A CN 110006800 A CN110006800 A CN 110006800A CN 201910194773 A CN201910194773 A CN 201910194773A CN 110006800 A CN110006800 A CN 110006800A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
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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
Abstract
The invention discloses a kind of particulate matter aerosol diluter and dilution process, the particulate matter aerosol diluter includes: two symmetrically arranged piston air pumps, power device, dilute component and processor, by the way that the aerosol to be diluted for setting volume is passed through one of two symmetrically arranged piston air pumps, processor controls power device and two piston air pumps is driven to carry out gas exchanges, and dilution component is controlled when two piston air pumps carry out gas exchanges, the aerosol to be diluted of the setting volume passed through is diluted, therefore the particulate matter aerosol diluter, it can be to high concentration aerosol one acquisition, just it is able to carry out the serial dilution of no maximum thinner ratio, and structure is simple, it occupies little space.
Description
Technical field
The present invention relates to particulate matter aerosol dilution technical field more particularly to a kind of particulate matter aerosol diluters and dilute
Release method.
Background technique
Various combustion source emission particulate matters are the important sources of atmosphere particle.Acquire discharged particle, to its into
The analysis of row physicochemical properties and concentration measures, and to grasp pollution situation and proposes corresponding reasonable control measures with important
Meaning.
In order to obtain the measurement data of high concentration particle object aerosol, it is necessary to be diluted to high concentration aerosol.Reason
There are two types of: one is because dilution can exhaust particulate object with the change procedure of simulating pollution object in an atmosphere, after dilution
Concentration is relatively stable.The second is the measuring instruments such as existing optical particulate diameter spectrometer have in measurement contaminant particle object concentration
Limit requires.
Existing particulate matter aerosol diluter is by the way of multistage common mixed diluting, to high concentration particle object gas
Colloidal sol is diluted, and it is more complicated and huge that this has resulted in particulate matter aerosol diluter, has in turn resulted in entire particulate matter
Aerosol dilution acquisition system is more complicated and huge, and is limited simultaneously by thinner ratio and dilution range.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of particulate matter aerosol diluter and dilution process, with can be right
High concentration aerosol one acquisition, and carry out the serial dilution of no maximum thinner ratio.
In a first aspect, the embodiment of the invention provides a kind of particulate matter aerosol diluters, comprising:
Two symmetrically arranged piston air pumps, power device, dilution component and processor；
The power device is sequentially connected, for driving described two piston air pumps respectively with described two piston air pumps
Carry out gas exchanges；
The dilution component, is connected to described two piston air pumps, for carrying out gas exchanges in described two piston air pumps
When, the aerosol to be diluted of the setting volume passed through is diluted；
The processor is connect with described two symmetrically arranged piston air pumps, power device, dilution component respectively, is used for
Control the piston air pump, the power device and dilution component operation.
In one possible implementation, in above-mentioned particulate matter aerosol diluter provided in an embodiment of the present invention,
Each piston air pump includes: piston and the piston rod that connect with piston；
The piston rod is connect with the power device；
The piston rod, for pushing the piston motion；
The piston, for sending the aerosol to be diluted to the dilution part under the promotion of the piston rod
Part.
In one possible implementation, in above-mentioned particulate matter aerosol diluter provided in an embodiment of the present invention,
Each piston air pump further include: two-way ventilation interface；
Electromagnetic switch is installed on ventilation interface described in each road, for controlling opening and closing for corresponding ventilation interface；
The processor is connect with each electromagnetic switch, beats on and off for control each electromagnetic switch
It closes；
The interface of respectively ventilating all the way of two piston air pumps, passes through rubber pipeline and the dilution members；
The another way ventilation interface of two piston air pumps, it is molten for inputting gas to be diluted by the electromagnetic switch
Glue, or pass through the aerosol after electromagnetic switch output dilution.
In one possible implementation, in above-mentioned particulate matter aerosol diluter provided in an embodiment of the present invention,
The power device includes: stepper motor and the crankshaft that connect with the stepper motor；
The crankshaft is connect with the piston rod；
The stepper motor, for driving the crankshaft to rotate；
The crankshaft, for driving the piston rod movement in described two piston air pumps, to carry out gas exchanges.
In one possible implementation, in above-mentioned particulate matter aerosol diluter provided in an embodiment of the present invention,
The power device further include: shaft coupling；
The shaft coupling, for the stepper motor and the crankshaft centering to be sequentially connected.
In one possible implementation, in above-mentioned particulate matter aerosol diluter provided in an embodiment of the present invention,
The dilution component includes: dual flow filter and flow solenoid valve；
The dual flow filter is filtered for the aerosol to be diluted to process；
The flow solenoid valve, the flow for the aerosol to be diluted to process are adjusted, and are set with realizing to described
The aerosol to be diluted for determining volume is diluted；
The processor is connect with the flow solenoid valve, for controlling the flow solenoid valve to the gas flow of process
It is adjusted；
The rubber pipeline is divided into the first branch and second branch in parallel；Wherein,
The first branch passes through the dual flow filter；
The second branch passes through the flow solenoid valve.
In one possible implementation, in above-mentioned particulate matter aerosol diluter provided in an embodiment of the present invention,
The forward direction of the dual flow filter is identical as reverse filter result.
In one possible implementation, in above-mentioned particulate matter aerosol diluter provided in an embodiment of the present invention,
The processor, specifically for calculating the piston gas according to the existing concentration data and aimed concn data of aerosol to be diluted
The object gas exchange times of pump and the target flow of the flow solenoid valve；It is dynamic according to object gas exchange times control
Power device drives the piston air pump to carry out gas exchanges, and controls the flow solenoid valve according to the target flow to process
The flow of aerosol to be diluted be adjusted.
In one possible implementation, in above-mentioned particulate matter aerosol diluter provided in an embodiment of the present invention,
It is provided with aerosol concentration sensor in each piston air pump, for acquiring aerosol concentration number in corresponding piston air pump
According to；
Each aerosol concentration sensor is connected to the processor；
The processor receives final aerosol concentration data, by the final aerosol concentration data and the mesh
Mark concentration data compares, if the final aerosol concentration data and the aimed concn data mismatch, calculates
The corresponding continuation gas exchanges number of piston air pump and the flow solenoid valve it is corresponding continue adjust flow, control institute
Stating power device drives the piston air pump to carry out gas exchanges according to the continuation gas exchanges number, and controls the flow
Solenoid valve is adjusted the flow of the aerosol to be diluted of process according to the adjusting flow that continues, so that the piston air pump
Middle gas concentration reaches in pre-set gas concentration range.
Second aspect, the embodiment of the invention provides a kind of particulate matter aerosol dilution methods, comprising:
The aerosol to be diluted for setting volume is passed through one of two symmetrically arranged piston air pumps；
Processor controls power device and two piston air pumps is driven to carry out gas exchanges；
The processor control dilution component is when described two piston air pumps carry out gas exchanges, to the setting body passed through
Long-pending aerosol to be diluted is diluted.
In one possible implementation, described to set in above-mentioned dilution process provided in an embodiment of the present invention
The aerosol to be diluted of volume is passed through before one of two symmetrically arranged piston air pumps, further includes:
The processor calculates the piston gas according to the existing concentration data and aimed concn data of aerosol to be diluted
The object gas exchange times of pump and the target flow of flow solenoid valve；
The processor control power device drives two piston air pumps to carry out gas exchanges, specifically includes:
The processor controls power device according to the object gas exchange times and the piston air pump is driven to carry out gas
Body exchange；
The dilution component includes: dual flow filter and flow solenoid valve；
Correspondingly, processor control dilution component is when described two piston air pumps carry out gas exchanges, to passing through
The aerosol to be diluted of setting volume be diluted, specifically include:
The processor controls the flow solenoid valve when described two piston air pumps carry out gas exchanges, according to described
The flow of the aerosol to be diluted of process is adjusted in target flow, with the aerosol to be diluted to the setting volume passed through into
Row dilution.
In one possible implementation, in above-mentioned dilution process provided in an embodiment of the present invention, each work
It is provided with aerosol concentration sensor in plug air pump,
The method also includes:
The aerosol concentration sensor acquires gas concentration data in each piston air pump；
The processor receives final aerosol concentration data, by the final aerosol concentration data and the mesh
Mark concentration data compares, if the final aerosol concentration data and the aimed concn data mismatch, calculates
The corresponding continuation gas exchanges number of piston air pump and the flow solenoid valve it is corresponding continue adjust flow, control institute
Stating power device drives the piston air pump to carry out gas exchanges according to the continuation gas exchanges number, and controls the flow
Solenoid valve according to it is described continue adjust flow adjusting the flow of the aerosol to be diluted of process is adjusted so that the piston
Gas concentration reaches in pre-set gas concentration range in air pump.
Particulate matter aerosol diluter and dilution process provided by the invention, which includes: two
A symmetrically arranged piston air pump, power device, dilution component and processor, the power device, respectively with it is described two
Piston air pump transmission connection, for driving described two piston air pumps to carry out gas exchanges, the dilution component, connection described two
A piston air pump is used for when described two piston air pumps carry out gas exchanges, molten to the gas to be diluted of the setting volume passed through
Glue is diluted, and the processor is connect with described two symmetrically arranged piston air pumps, power device, dilution component respectively,
For controlling the piston air pump, the power device and dilution component operation.In the present solution, the particulate matter aerosol is dilute
Device is released, it can be to high concentration aerosol one acquisition, it will be able to carry out the serial dilution of no maximum thinner ratio, and structure letter
It is single, it occupies little space.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments be also possible to obtain other drawings based on these drawings for those of ordinary skill in the art.
Fig. 1 is the structural schematic diagram of particulate matter aerosol diluter provided in an embodiment of the present invention；
Fig. 2 is the generation schematic network structure of pathology descriptor provided in an embodiment of the present invention.
Appended drawing reference:
110- piston air pump；120- power device；130- dilutes component；
140- processor；1- stepper motor；2- crankshaft；
111- piston rod；112- piston；4- dual flow filter；
5- flow solenoid valve；8- shaft coupling；9- aerosol concentration sensor.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Every other reality obtained based on the embodiments of the present invention
Example is applied, shall fall within the protection scope of the present invention.
Particulate matter aerosol diluter and dilution process provided by the invention, applicable stationary source place can wrap
It includes: the places such as coal works, power plant, chemical plant, applicable mobile pollution source place can include: the fields such as motor vehicle, steamer, aircraft
Institute.
Hereinafter reference will be made to the drawings to specifically describe the embodiment of the present invention.
Embodiment one
Fig. 1 is the structural schematic diagram of particulate matter aerosol diluter provided in an embodiment of the present invention, as shown in Figure 1, this
Grain object aerosol diluter includes: two symmetrically arranged piston air pumps 110, power device 120, dilution component 130 and place
Manage device 140.
The power device 120 is sequentially connected, for driving described two work respectively with described two piston air pumps 110
It fills in air pump 110 and carries out gas exchanges.
The dilution component 130, is connected to described two piston air pumps 110, for carrying out in described two piston air pumps 110
When gas exchanges, the aerosol to be diluted of the setting volume passed through is diluted.
The processor 140 respectively with described two symmetrically arranged piston air pumps 110, power device 120, dilution component
130 connections are run for controlling the piston air pump 110, power device 120 and dilution component 130.
Specifically, in the present embodiment, as shown in Figure 1, piston air pump 110 includes two piston air pumps 3a and 3b, each work
Fill in the device in air pump including piston 112, disengaging gas interface etc. for gas exchanges.
Power device 120 respectively with piston air pump 3a and 3b be sequentially connected, can drive between piston air pump 3a and 3b into
The isometric gas exchanges of row.For example, piston is in power device by high concentration aerosol input piston air pump 3a to be diluted
Under 120 promotion, high concentration aerosol to be diluted can be shifted onto equal volume in piston air pump 3b.
Dilution component 130 may include aerosol filtration channel and not filtration channel, can also be including other channels, this reality
It applies example it is not limited here, is connected between piston air pump 3a and 3b, it, can when piston air pump 3a and 3b carry out gas exchanges
It is diluted with the aerosol to be diluted to the setting volume passed through.For example, high concentration aerosol to be diluted is pushed away in equal volume
By dilution component 130 during into piston air pump 3b, the part of setting volume is carried out by aerosol filtration channel
Pure air is obtained by filtration, a part is not filtered by not filtration channel, is just obtained after mixing in piston air pump 3b
A certain proportion of dilution aerosol, and aerosol can repeatedly be exchanged in two piston air pumps, to certain density
Aerosol is repeatedly diluted, the concentration needed.
Processor 140 can dilute primary thinner ratio, and dilution number by control dilution component 130, obtain one
The aerosol of concentration is determined, to meet the needs of user's sampling and measurement.In practical application, processor 140 specifically can be monolithic
The processing equipments such as machine.
Particulate matter aerosol diluter provided in this embodiment include: two symmetrically arranged piston air pumps, power device,
Dilute component and processor, by by the aerosol to be diluted for setting volume be passed through two symmetrically arranged piston air pumps its
One of, processor controls power device and two piston air pumps is driven to carry out gas exchanges, and controls dilution component at two
When piston air pump carries out gas exchanges, the aerosol to be diluted of the setting volume passed through is diluted, the particulate matter aerosol
Diluter, can be to high concentration aerosol one acquisition, with regard to carrying out the serial dilution of no maximum thinner ratio, and structure letter
Single, occupied space is smaller.
Embodiment two
As shown in Figure 1, on the basis of example 1, in particulate matter aerosol diluter provided in this embodiment, each
The piston air pump 110 includes: piston 112 and the piston rod connecting with piston 112 111.
The piston rod 111 is connect with the power device 120.
The piston rod 111, for pushing the piston 112 to move.
The piston 112 is described dilute for sending the aerosol to be diluted under the promotion of the piston rod 111
Release component 130.
Specifically, the work in the present embodiment, in the case where power device 120 provides power, in each piston air pump 110
Plug 112 can under the promotion of piston rod 111 connected to it by aerosol to be diluted send to dilution component 130 carry out it is dilute
It releases, another piston air pump is entered after dilution.
In a kind of preferred embodiment, each piston air pump 110 further include: two-way is ventilated interface.
Electromagnetic switch 6a, 6b, 6c and 6d are installed on ventilation interface described in each road, for controlling corresponding ventilation interface
It opens and closes.
The processor 140 is connect with electromagnetic switch 6a, 6b, 6c and 6d, for controlling electromagnetic switch 6a, 6b, 6c and 6d
Opening and closing.
The interface of respectively ventilating all the way of two piston air pumps 110, passes through rubber pipeline and the dilution members.
The another way ventilation interface of two piston air pumps 110, inputs gas to be diluted for passing through the electromagnetic switch
Colloidal sol, or pass through the aerosol after electromagnetic switch output dilution.
Specifically, in the present embodiment, each piston air pump 110 can have two-way ventilation interface, all the way for passing in and out gas
Body, another way are used to be connected to by rubber pipeline with dilution component 130.Two piston air pumps 110 share 4 ventilation interfaces, often
It is provided with electromagnetic switch on a ventilation interface, i.e., electromagnetic switch 6a, 6b, 6c and 6d as shown in Figure 1, these electromagnetic switch are equal
It is controlled by processor 140.
For example, processor 140 controls electromagnetic switch 6a and opens, and is passed through after determining volume aerosol to be diluted, electromagnetism is opened
It closes 6a to close, electromagnetic switch 6b and 6c are opened, and aerosol passes through rubber pipeline and dilution part by air pump 3a under the promotion of piston 112
Part 130 enters air pump 3b, and the aerosol after diluting can be output to next equipment by 7a or 7b.
In a kind of preferred embodiment, the power device 120 include: stepper motor 1 and with the stepper motor 1
The crankshaft 2 of connection.
The crankshaft 2 is connect with the piston rod 111.
The stepper motor 1, for driving the crankshaft 2 to rotate.
The crankshaft 2, for driving the piston rod 111 in described two piston air pumps 110 to move, to carry out gas friendship
It changes.
Specifically, in the present embodiment, power device 120 can be by stepper motor 1 and the crankshaft connecting with stepper motor 1
2 compositions.Preferably, stepper motor 1 and crankshaft 2 are sequentially connected by 8 centering of shaft coupling.Stepper motor 1 is rotated with dynamic crankshaft 2,
Crankshaft 2 drives the piston rod 111 in two piston air pumps 110 to move, to carry out gas exchanges.
In a kind of preferred embodiment, the dilution component 130 includes: dual flow filter 4 and flow solenoid valve 5.
The dual flow filter 4 is filtered for the aerosol to be diluted to process.
The flow solenoid valve 5, the flow for the aerosol to be diluted to process are adjusted, and are set with realizing to described
The aerosol to be diluted for determining volume is diluted.
The processor 140 is connect with the flow solenoid valve 5, for controlling the gas of 5 pairs of flow solenoid valve processes
Body flow is adjusted.
The rubber pipeline is divided into the first branch and second branch in parallel wherein,
The first branch passes through the dual flow filter 4.
The second branch passes through the flow solenoid valve 5.
Specifically, in the present embodiment, the forward direction of dual flow filter 4 is identical as reverse filter result.Processor 140 can be controlled
The gas flow of 5 pairs of flow solenoid valve processes processed is adjusted.Processor 140 can be according to the existing concentration of aerosol to be diluted
Data and aimed concn data calculate the object gas exchange times of piston air pump 110 and the target flow of flow solenoid valve 5.Root
It drives piston air pump 110 to carry out gas exchanges according to object gas exchange times control power device 120, and controls flow electricity
Magnet valve 5 is adjusted according to flow of the target flow to the aerosol to be diluted of process.
For example, under the promotion of piston, a part passes through first branch quilt for aerosol to be diluted in piston air pump 3a
Dual flow filter 4 enters piston air pump 3b after being filtered into pure air, and another part is straight by the flow solenoid valve 5 of second branch
It taps into piston air pump 3b, has carried out primary dilution after two parts mixing, above-mentioned dilution can be in two-piston air pump
In be repeated, and thinner ratio can pass through flow solenoid valve 5 accurately adjust.
It, can be to the aerosol concentration after dilution before output in order to guarantee that the final thinner ratio of aerosol meets the requirements
It is detected.In a kind of preferred embodiment, aerosol concentration sensor 9 can be set in each piston air pump 110,
For acquiring aerosol concentration data in corresponding piston air pump.
Each aerosol concentration sensor 9 is connect with the processor 140.
The processor 140 receives final aerosol concentration data, by final the aerosol concentration data and mesh
Mark concentration data compares, if the final aerosol concentration data and the aimed concn data mismatch, calculates
The corresponding continuation gas exchanges number of the piston air pump 110 and the flow solenoid valve 5 it is corresponding continue adjust flow, control
Making the power device 120 drives the piston air pump 110 to carry out gas exchanges according to the continuation gas exchanges number, and controls
The flow solenoid valve 5 is made the flow of the aerosol to be diluted of process is adjusted according to the adjusting flow that continues, so that
Gas concentration reaches in pre-set gas concentration range in the piston air pump 110.In practical application, processor 140 specifically can be with
Including signal acquisition unit, processing unit and external communications units etc..Control unit can acquire gas by signal acquisition unit
Collosol concentration is through the processing unit handled the electric signal of acquisition, by external communications units (such as serial communication) with
Slave computer (such as screen, report control platform) and host computer (such as PC) are communicated.
Specifically, in the present embodiment, after dilution, processor 140 can be acquired final by aerosol concentration sensor 9
Aerosol concentration data are compared with aimed concn data, if final aerosol concentration data are in aimed concn data
Within a certain error range, then it is assumed that matching, it is on the contrary, then it is assumed that mismatch.If mismatching, needs to continue to dilute, then calculate
The corresponding continuation gas exchanges number of piston air pump 110 and flow solenoid valve 5 it is corresponding continue adjust flow, control power dress
It sets 120 drive piston air pumps 110 and carries out gas exchanges according to the continuation gas exchanges number, and control flow solenoid valve 5 and press
The flow of the aerosol to be diluted of process is adjusted according to the adjusting flow that continues, finally makes gas in piston air pump 110
Concentration reaches in pre-set gas concentration range.
Particulate matter aerosol diluter provided in this embodiment includes: flow solenoid valve, aerosol concentration sensor etc., is led to
It crosses and the aerosol to be diluted for setting volume is passed through one of two symmetrically arranged piston air pumps, processor controls power
Device drives two piston air pumps to carry out gas exchanges, and controls dilution component and carry out gas exchanges in two piston air pumps
When, the aerosol to be diluted of the setting volume passed through is diluted, which can be to high concentration gas
Colloidal sol one acquisition just carries out the serial dilution of no maximum thinner ratio, improves diluted accuracy, and structure is simple,
Occupied space is smaller.
Embodiment three
Fig. 2 is the flow diagram of particulate matter aerosol dilution method provided in an embodiment of the present invention.The present embodiment uses
The particulate matter aerosol diluter provided in above-described embodiment one and embodiment two, as shown in Fig. 2, this method comprises:
S201, the aerosol to be diluted for setting volume is passed through one of two symmetrically arranged piston air pumps.
S202, processor control power device drive two piston air pumps to carry out gas exchanges.
S203, processor control dilution component are when described two piston air pumps carry out gas exchanges, to what is passed through
The aerosol to be diluted of setting volume is diluted.
A particulate matter aerosol dilution method provided in this embodiment, by the way that the aerosol to be diluted for setting volume to be passed through
One of two symmetrically arranged piston air pumps of grain object aerosol diluter, processor control power device and drive two
Piston air pump carries out gas exchanges, and controls dilution component when two piston air pumps carry out gas exchanges, sets to what is passed through
The aerosol to be diluted for determining volume is diluted, can be to high concentration aerosol one acquisition, with regard to carrying out no maximum thinner ratio
Serial dilution, to meet customer need.
Optionally, before step S201, can also include:
The processor calculates the piston gas according to the existing concentration data and aimed concn data of aerosol to be diluted
The object gas exchange times of pump and the target flow of flow solenoid valve.
The processor control power device drives two piston air pumps to carry out gas exchanges, specifically includes:
The processor controls power device according to the object gas exchange times and the piston air pump is driven to carry out gas
Body exchange.
The dilution component includes: dual flow filter and flow solenoid valve.
Correspondingly, processor control dilution component is when described two piston air pumps carry out gas exchanges, to passing through
The aerosol to be diluted of setting volume be diluted, specifically include:
The processor controls the flow solenoid valve when described two piston air pumps carry out gas exchanges, according to described
The flow of the aerosol to be diluted of process is adjusted in target flow, with the aerosol to be diluted to the setting volume passed through into
Row dilution.
Further, it is provided with aerosol concentration sensor in each piston air pump,
The above method can with the following steps are included:
The aerosol concentration sensor acquires gas concentration data in each piston air pump.
The processor receives final aerosol concentration data, by the final aerosol concentration data and the mesh
Mark concentration data compares, if the final aerosol concentration data and the aimed concn data mismatch, calculates
The corresponding continuation gas exchanges number of piston air pump and the flow solenoid valve it is corresponding continue adjust flow, control institute
Stating power device drives the piston air pump to carry out gas exchanges according to the continuation gas exchanges number, and controls the flow
Solenoid valve according to it is described continue adjust flow adjusting the flow of the aerosol to be diluted of process is adjusted so that the piston
Gas concentration reaches in pre-set gas concentration range in air pump.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (12)
1. a kind of particulate matter aerosol diluter characterized by comprising two symmetrically arranged piston air pumps, power device,
Dilute component and processor；
The power device is sequentially connected with described two piston air pumps respectively, for driving described two piston air pumps to carry out
Gas exchanges；
The dilution component, is connected to described two piston air pumps, is used for when described two piston air pumps carry out gas exchanges, right
By the aerosol to be diluted of setting volume be diluted；
The processor is connect with described two symmetrically arranged piston air pumps, power device, dilution component respectively, for controlling
The piston air pump, the power device and dilution component operation.
2. particulate matter aerosol diluter according to claim 1, which is characterized in that each piston air pump includes:
Piston and the piston rod being connect with piston；
The piston rod is connect with the power device；
The piston rod, for pushing the piston motion；
The piston, for sending the aerosol to be diluted to the dilution component under the promotion of the piston rod.
3. particulate matter aerosol diluter according to claim 2, which is characterized in that each piston air pump is also wrapped
It includes: two-way ventilation interface；
Electromagnetic switch is installed on ventilation interface described in each road, for controlling opening and closing for corresponding ventilation interface；
The processor is connect with each electromagnetic switch, for controlling the opening and closing of each electromagnetic switch；
The interface of respectively ventilating all the way of two piston air pumps, passes through rubber pipeline and the dilution members；
The another way ventilation interface of two piston air pumps, is used to input aerosol to be diluted by the electromagnetic switch, or
Pass through the aerosol after electromagnetic switch output dilution.
4. particulate matter aerosol diluter according to claim 3, which is characterized in that the power device includes: stepping
Motor and the crankshaft being connect with the stepper motor；
The crankshaft is connect with the piston rod；
The stepper motor, for driving the crankshaft to rotate；
The crankshaft, for driving the piston rod movement in described two piston air pumps, to carry out gas exchanges.
5. particulate matter aerosol diluter according to claim 4, which is characterized in that the power device further include: connection
Axis device；
The shaft coupling, for the stepper motor and the crankshaft centering to be sequentially connected.
6. particulate matter aerosol diluter according to claim 5, which is characterized in that the dilution component includes: two-way
Filter and flow solenoid valve；
The dual flow filter is filtered for the aerosol to be diluted to process；
The flow solenoid valve, the flow for the aerosol to be diluted to process are adjusted, to realize to the setting body
Long-pending aerosol to be diluted is diluted；
The processor is connect with the flow solenoid valve, is carried out for controlling the flow solenoid valve to the gas flow of process
It adjusts；
The rubber pipeline is divided into the first branch and second branch in parallel；Wherein,
The first branch passes through the dual flow filter；
The second branch passes through the flow solenoid valve.
7. particulate matter aerosol diluter according to claim 6, which is characterized in that the dual flow filter forward direction with
Reverse filter result is identical.
8. particulate matter aerosol diluter according to claim 6, which is characterized in that the processor is specifically used for root
The object gas exchange times of the piston air pump are calculated according to the existing concentration data and aimed concn data of aerosol to be diluted
With the target flow of the flow solenoid valve；Power device, which is controlled, according to the object gas exchange times drives the piston gas
Pump carries out gas exchanges, and controls flow of the flow solenoid valve according to the target flow to the aerosol to be diluted of process
It is adjusted.
9. particulate matter aerosol diluter according to claim 8, which is characterized in that be arranged in each piston air pump
There is aerosol concentration sensor, for acquiring aerosol concentration data in corresponding piston air pump；
Each aerosol concentration sensor is connected to the processor；
The processor receives final aerosol concentration data, by the final aerosol concentration data and the target rich
Degree is according to comparing, if the final aerosol concentration data and the aimed concn data mismatch, described in calculating
The corresponding continuation gas exchanges number of the piston air pump and flow solenoid valve is corresponding continues to adjust flow, controls described dynamic
Power device drives the piston air pump to carry out gas exchanges according to the continuation gas exchanges number, and controls the flow electromagnetic
Valve is adjusted the flow of the aerosol to be diluted of process according to the adjusting flow that continues, so that gas in the piston air pump
Bulk concentration reaches in pre-set gas concentration range.
10. a kind of particulate matter aerosol dilution method characterized by comprising
The aerosol to be diluted for setting volume is passed through one of two symmetrically arranged piston air pumps；
Processor controls power device and two piston air pumps is driven to carry out gas exchanges；
The processor control dilution component is when described two piston air pumps carry out gas exchanges, to the setting volume passed through
Aerosol to be diluted is diluted.
11. dilution process according to claim 10, which is characterized in that described to lead to the aerosol to be diluted for setting volume
Before entering one of two symmetrically arranged piston air pumps, further includes:
The processor calculates the piston air pump according to the existing concentration data and aimed concn data of aerosol to be diluted
The target flow of object gas exchange times and flow solenoid valve；
The processor control power device drives two piston air pumps to carry out gas exchanges, specifically includes:
The processor controls power device according to the object gas exchange times and the piston air pump is driven to carry out gas friendship
It changes；
The dilution component includes: dual flow filter and flow solenoid valve；
Correspondingly, the processor control dilution component is set when described two piston air pumps carry out gas exchanges to what is passed through
The aerosol to be diluted for determining volume is diluted, and is specifically included:
The processor controls the flow solenoid valve when described two piston air pumps carry out gas exchanges, according to the target
The flow of the aerosol to be diluted of process is adjusted in flow, is carried out with the aerosol to be diluted to the setting volume passed through dilute
It releases.
12. dilution process according to claim 11, which is characterized in that be provided with aerosol in each piston air pump
Concentration sensor,
The method also includes:
The aerosol concentration sensor acquires gas concentration data in each piston air pump；
The processor receives final aerosol concentration data, by the final aerosol concentration data and the target rich
Degree is according to comparing, if the final aerosol concentration data and the aimed concn data mismatch, described in calculating
The corresponding continuation gas exchanges number of the piston air pump and flow solenoid valve is corresponding continues to adjust flow, controls described dynamic
Power device drives the piston air pump to carry out gas exchanges according to the continuation gas exchanges number, and controls the flow electromagnetic
Valve according to it is described continue adjust flow adjusting the flow of the aerosol to be diluted of process is adjusted so that the piston air pump
Middle gas concentration reaches in pre-set gas concentration range.
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| CN110006800B (en) | 2021-02-26 |
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