CN209604253U - A kind of air extractor - Google Patents
A kind of air extractor Download PDFInfo
- Publication number
- CN209604253U CN209604253U CN201920185327.9U CN201920185327U CN209604253U CN 209604253 U CN209604253 U CN 209604253U CN 201920185327 U CN201920185327 U CN 201920185327U CN 209604253 U CN209604253 U CN 209604253U
- Authority
- CN
- China
- Prior art keywords
- aspiration pump
- time relay
- air extractor
- way throttle
- throttle valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Jet Pumps And Other Pumps (AREA)
Abstract
The utility model discloses a kind of air extractor, a kind of animal exposure is provided and tests dedicated aspiration pump, make its not only can prolonged non-stop run, can also realize tiny structure, long-time, stable carry out air suction process.A kind of air extractor, including two for providing aspiration pump, the loop control time relay of tiny structure for experimental box, the bleeding point of two aspiration pumps is connected with one respectively for reducing the one-way throttle unit of extraction flow, the air inlet of described two one-way throttle units passes through pipeline and converges for an exhaust pipe, and the one-way throttle unit is concatenated by check valve, throttle valve；The exhaust pipe separates two suction branches connecting with experimental box bottom, and described two suction branches are mounted on the flowmeter for showing extraction flow；One of aspiration pump accesses power supply after concatenating with time relay T normally opened contact, another aspiration pump accesses power supply after concatenating with time relay T normally-closed contact.
Description
Technical field
The utility model relates to the extraction tools that a kind of long-time that a kind of Bioexperiment uses runs without interruption.
Background technique
Currently, China environmental pollution it is increasingly severe, air quality worse and worse, although pollutant compared with
Low, exposure duration is long, but the health of low concentration exposure on human long-term in this way has very big threat.Using Animal Inhalation Toxicity Exposure
The method of air carrys out harm of the simulated atmosphere pollutant to human body, is a kind of relatively conventional experimental program.
As shown in Figure 1, animal exposure experimental provision includes pollution case and cleaning box, aspiration pump, high efficiency particulate air filter, the dirt
Dye case and cleaning box pass through exhaust tube and connect with aspiration pump, form tiny structure by aspiration pump, introduce into cabinet extraneous empty
Gas, the air inlet pipe of the cleaning box on the right side are equipped with high efficiency particulate air filter and are used to filter out the pollutant in air.Conventional pumping
Air pump is not applied for long period of experiments mostly, for example, the experiment of continuous dozens of days work or the damage that can't bear the heavy load can not make
With or serious curtailment service life.The non-maintaining import aspiration pump of high-quality, price is very expensive, and not can guarantee
It uses and does not go wrong for a long time.Existing aspiration pump cannot work long hours mostly.
Chinese patent Patent No.: 201710249263.X, title are as follows: the small flow aspiration pump of low pulse, Publication No.
CN106870338A utility model patent discloses a kind of small flow aspiration pump of low pulse.The utility model relates to one kind to be used for
The small flow aspiration pump of gas sampler, specifically a kind of small flow aspiration pump of low pulse drop significantly within the scope of extraction flow
The low pulsation of instantaneous flow, improves the accuracy in computation of integrated flow.The extraction flow lower limit smooth starting of pump, can basis
It needs, can adjust extraction flow lower limit and range.The technical solution can solve the pumping problem of small flow, but its still without
Method solves the bring wear damage that works long hours, and the problem that fever is serious.
Chinese patent number of patent application: 201310595223.2, the patent of title " vacuum pump " discloses a kind of true
Empty pump air pump, including shell are respectively equipped with vacuum pump and air extractor in shell, and air extractor and vacuum pump are integrated with shell
Connection, vacuum pump front end are connected with bracket, and bracket is equipped with vacuum tube, and vacuum tube passes through bracket and vacuum pump is tightly connected, very
Empty pump side face is equipped with check valve, and check valve is equipped with exhaust pipe, row for controlling vacuum tube and vacuum pump work at the top of air extractor
The air inlet of tracheae and the gas outlet of air extractor connect, and exhaust pipe one end is connect with air extractor, the other end and gas mistake
Device connection is filtered, gas-filtering device is tightly connected by a sealing-plug and exhaust pipe.This vacuum pump is easy to operate, polymerization
Molding securely, can effectively prevent gas to enter in shell from muffler, to ensure that the vacuumizing effect of vacuum pump, and nothing
External other pipelines, switching performance it need to stablize on container, assembling is more convenient." vacuum pump side is equipped with unidirectional the technical solution
Valve, check valve are used to control vacuum tube and vacuum pump work, " gas can be effectively prevent to enter in shell from muffler, thus
It ensure that the vacuumizing effect of vacuum pump.But the aspiration pump still can't resolve the problems such as prolonged operational heat.
In order to solve above-mentioned problem, this just needs a kind of aspiration pump that long-time runs without interruption, and is secondly also noted that
It prevents air-flow reflux from guaranteeing pumping effect, to solve the problem, realizes tiny structure, long-time, stable carry out air suction process.
Summary of the invention
Test dedicated aspiration pump to provide a kind of exposure of animal, make its not only can prolonged non-stop run,
It can also realize tiny structure, long-time, stable carry out air suction process, and reduce laboratory apparatus cost.The utility model is adopted
With following technical solution.
A kind of air extractor, feature:
Including two for providing aspiration pump, the loop control time relay of tiny structure, two pumpings for experimental box
The bleeding point of air pump is connected with one respectively for reducing the one-way throttle unit of extraction flow, described two one-way throttle units
Air inlet passes through pipeline and converges for an exhaust pipe, and the one-way throttle unit is concatenated by check valve, throttle valve；
The exhaust pipe separates two suction branches connecting with experimental box bottom, and described two suction branches are respectively mounted
There is the flowmeter for showing extraction flow；
One of aspiration pump accesses power supply after concatenating with time relay T normally opened contact, another aspiration pump and when
Between access power supply after relay T normally-closed contact concatenation, it is electric to start switch K then access of connect with the loop control time relay
Source.
Further, the check valve, throttle valve are all made of the western RE series one-way throttle valve of moral power.
Further, the flowmeter is using measuring range between the glass rotameter of 160-1600L/H.
Preferably, the loop control time relay uses model DH48S-S digital display cycle time relay.
Preferably, the one-way throttle valve is using pressure adjustable single within the scope of 0.05-0.9Mpa to throttle valve.
Preferably, the aspiration pump uses the speed of evacuation for the single-stage rotary vane type vacuum pump of 100L/min.
Technical solutions of the utility model have the following characteristics that conventional aspiration pump is not applied for long period of experiments mostly,
The work of continuous dozens of days experiment, most of aspiration pump are unable to satisfy above-mentioned requirements, use the non-maintaining aspiration pump price of high-quality
It is very expensive, and not can guarantee to use for a long time and not go wrong.
1. the utility model cost of manufacture is lower, maintenance cost is low, highly reliable.
The utility model is taken turns to operate mode using two aspiration pumps, is evacuated.On the one hand, the work of each aspiration pump
Time is not grown, and service life will not be seriously affected as non-stop run；On the other hand, can in the aspiration pump neutral gear phase,
Convenient for the aspiration pump examination and maintenance to the free time, improves service life and experimental reliability, guarantee experiment can continue steady
It is fixed to carry out.
2. the utility model flow is adjustable, flow indication is intuitive, meets requirement of the experimental box body to tiny structure.
Due to experimental box need tiny structure, the negative pressure ventilation pressure of aspiration pump is larger, this just need to pumping airflow into
Row decompression.For this purpose, the utility model is equipped with one-way throttle unit.Each one-way throttle unit is by check valve, throttle valve
It concatenates.Wherein, check valve can be to avoid aspiration pump of the air-flow reflux into the free time；Throttle valve can be used for regulating gas stream
Amount.
Preferably, throttle valve uses the western RE series one-way throttle valve of moral power.The suction branch is mounted on for showing
Show the flowmeter of extraction flow.Air flow rate is adjusted by adjusting throttle valve knob, then by the registration of observation flowmeter, directly
Required gas flow is tested to adjusting out.
Detailed description of the invention
Fig. 1 is animal exposure experimental provision structural schematic diagram.
Fig. 2 is the animal exposure experimental provision structural schematic diagram equipped with the utility model.
Fig. 3 is the electric control system electrical schematic diagram of the utility model.
In attached drawing: a, cartridge filter；B, experimental box；C, aspiration pump；D, flowmeter；E, throttle valve；F, check valve.
Specific embodiment
The utility model is described further with reference to the accompanying drawing.
A kind of air extractor, including two for providing aspiration pump, the loop control time relay of tiny structure for experimental box
Device.
Aspiration pump selects the aspiration pump of market routine, and the speed of evacuation should be more than or equal to 100L/min, meets real
The ventilation of tryoff body needs (can be by gas displacement required in experimental box body one time in some time).Loop control time relay
Device using conventional model DH48S-S digital display cycle time relay, it have 99 hours within clocking capability, by after
Electric appliance normally opened contact, normally-closed contact on-off control two aspiration pumps take turns to operate.Such as will turn on, turn-off time is disposed as
It 9 hours, then normally-closed contact is closed 9 hours, is then turned off 9 hours, constantly recycles repeatedly；Normally-closed contact action process with it is normally opened
Contact is opposite.
One-way throttle unit is installed on the pipeline of the bleeding point connection of two aspiration pumps.One-way throttle unit is used for
Extraction flow is reduced, air-flow reverse flow pumpback air pump can also be prevented.The one-way throttle unit is concatenated by check valve, throttle valve
It forms.Check valve keeps air-flow that may only flow into aspiration pump through exhaust pipe, prevents air-flow from inversely flowing out.Throttle valve can be used for dropping
Low gas pressure reduces air flow rate.The check valve, throttle valve are all made of the western RE series one-way throttle valve of common moral power.
RE series one-way throttle valve flow is adjustable, can be used as check valve, can also be used as throttle valve use.
As shown in Fig. 2, it is one that the air inlet (left end port) of described two one-way throttle units, which is converged by pipeline,
Exhaust pipe realizes two air-extractor pumping pipeline intercommunications.Then, the exhaust pipe separates two and experimental box bottom again
The suction branch of connection.Described two suction branches are mounted on the flowmeter d for showing extraction flow.
The use of time passes through the adjustable gas flow of throttle valve.The suction branch is mounted on for showing pumping
The flowmeter d of flow.Air flow rate is adjusted by adjusting knob, by observing flowmeter registration, adjusts out and tests required gas
Body flow.The flowmeter is using conventional measuring range between the glass rotameter of 160-1600L/H.Turned by glass
Subflow meter can intuitively observe air flow rate, so that gas replenishment speed meets experiment demand.
As shown in figure 3, one of aspiration pump c accesses 220V power supply after concatenating with time relay T normally opened contact, in addition
One aspiration pump accesses 220V power supply after concatenating with time relay T normally-closed contact.Start switch K and loop control time relay
Then device series connection accesses power supply.
The course of work of electrical equipment.Turn-on time t1, turn-off time t2 can be set in time relay T.By lower switch
K, time relay normally open contact closure, normally opened contact turn-on time t1 are then turned off time t2, are further continued for turn-on time
T1 ... so continuous work of circulation.The working condition of its normally-closed contact is just opposite with normally opened contact.By lower switch K, when
Between relay normally open contact be closed, connect aspiration pump M1 time t1, aspiration pump M2 is inoperative；Then while aspiration pump M1 stops
Aspiration pump M2 time t2 ... ... so circulation is connected repeatedly, until disconnecting switch K.
The utility model can not only run without interruption for a long time as a kind of dedicated air extractor of experimental box, also
It can accomplish to prevent air-flow reflux from guaranteeing pumping effect, flow is adjustable Observable realizes tiny structure, long-time, stable progress
It is evacuated operation.The utility model flow is adjustable, and flow indication is intuitive, meets requirement of the experimental box body to tiny structure.Due to taking out
The negative pressure ventilation pressure of air pump is larger, and extraction flow is larger, this just needs to depressurize pumping airflow.The utility model installation
There is one-way throttle unit.Each one-way throttle unit is concatenated by check valve, throttle valve.Wherein, check valve can be kept away
Exempt from aspiration pump of the air-flow reflux into the free time；Throttle valve can be used for adjusting gas flow.
Embodiment described above is only that preferred embodiments of the present invention are described, not practical to this
Novel conception and scope of protection are defined, without departing from the design concept of the present utility model, common in this field
The all variations and modifications that engineers and technicians make the technical solution of the utility model should all fall into the guarantor of the utility model
Protect range.
Claims (6)
1. a kind of air extractor, it is characterised in that:
Including two for providing aspiration pump, the loop control time relay of tiny structure, two aspiration pumps for experimental box
Bleeding point be connected with one respectively for reducing the one-way throttle unit of extraction flow, the air inlet of described two one-way throttle units
Mouth is converged by pipeline for an exhaust pipe, and the one-way throttle unit is concatenated by check valve, throttle valve；
The exhaust pipe separates two suction branches connecting with experimental box bottom, and described two suction branches are mounted on use
In the flowmeter of display extraction flow；
One of aspiration pump accesses power supply after concatenating with time relay T normally opened contact, another aspiration pump and time after
Power supply is accessed after electric appliance T normally-closed contact concatenation, K is started switch and power supply is connected and then accessed with the loop control time relay.
2. air extractor according to claim 1, it is characterised in that: the check valve, throttle valve are all made of the western RE system of moral power
Column one-way throttle valve.
3. air extractor according to claim 1, it is characterised in that: the flowmeter is using measuring range between 160-
The glass rotameter of 1600L/H.
4. air extractor according to claim 1, it is characterised in that: the loop control time relay uses model
DH48S-S digital display cycle time relay.
5. air extractor according to claim 2, it is characterised in that: the one-way throttle valve uses 0.05-0.9Mpa range
Interior pressure adjustable single is to throttle valve.
6. air extractor according to claim 1, it is characterised in that: the aspiration pump uses the speed of evacuation for 100L/min's
Single-stage rotary vane type vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920185327.9U CN209604253U (en) | 2019-02-02 | 2019-02-02 | A kind of air extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920185327.9U CN209604253U (en) | 2019-02-02 | 2019-02-02 | A kind of air extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209604253U true CN209604253U (en) | 2019-11-08 |
Family
ID=68403278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920185327.9U Expired - Fee Related CN209604253U (en) | 2019-02-02 | 2019-02-02 | A kind of air extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209604253U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115250936A (en) * | 2022-07-21 | 2022-11-01 | 中国环境科学研究院 | Ozone exposes experimental apparatus |
-
2019
- 2019-02-02 CN CN201920185327.9U patent/CN209604253U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115250936A (en) * | 2022-07-21 | 2022-11-01 | 中国环境科学研究院 | Ozone exposes experimental apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204511805U (en) | A kind of air compressor | |
| CN108969814B (en) | Multifunctional medical negative pressure drainage device | |
| CN209604253U (en) | A kind of air extractor | |
| CN209640150U (en) | A kind of hydraulic oil particle pollutant testing apparatus | |
| CN105736349A (en) | Roots vacuum pump performance test system and test method thereof | |
| CN201543626U (en) | Capillary tube cleaning device | |
| CN104677696A (en) | Constant-speed sampling gun | |
| CN204286887U (en) | A kind of environmental monitoring gas sampling device | |
| CN102049397A (en) | Method and device for cleaning capillary of automatic sampler | |
| CN204040181U (en) | A kind of novel suction excrement machine | |
| CN201109583Y (en) | Fresh-keeping case having vacuum-pumping system | |
| CN109030123A (en) | A kind of air sampler for hot environment | |
| CN202628545U (en) | Closed pipeline device for pump testing system | |
| CN211777875U (en) | Integrated negative pressure vacuum system | |
| CN202069939U (en) | Novel transfusion pump | |
| CN205638887U (en) | Roots vacuum pump capability test system | |
| CN210571611U (en) | Vacuum box sampler with automatic cleaning and sampling functions | |
| CN209046461U (en) | A kind of magnetic suspension motor cooling device | |
| CN211179178U (en) | Novel CEMS system's full system calibration sample thief | |
| CN203908828U (en) | Quantitative gas sampler | |
| CN204064750U (en) | A kind of low discharge air sampler | |
| CN109578166B (en) | Pulse type engine | |
| CN207392317U (en) | A kind of ultrapure water circle device | |
| CN206772658U (en) | Novel air sampling instrument | |
| CN207980798U (en) | Oxygen pressure-swing absorption apparatus processed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191108 Termination date: 20220202 |