CN207198137U - Multi-channel flow passage switching device - Google Patents
Multi-channel flow passage switching device Download PDFInfo
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- CN207198137U CN207198137U CN201720991985.8U CN201720991985U CN207198137U CN 207198137 U CN207198137 U CN 207198137U CN 201720991985 U CN201720991985 U CN 201720991985U CN 207198137 U CN207198137 U CN 207198137U
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- peristaltic pump
- flow passage
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Abstract
The utility model discloses a kind of multi-channel flow passage switching device.Multi-channel flow passage switching device includes multiposition valve, public passage, detection cell, sampling peristaltic pump, stepper motor, waste liquid cylinder, output channel, triple valve, reflux line and stirring peristaltic pump, and multiposition valve is used to sequentially access distilled water, water sample and reaction reagent；Public passage connects with multiposition valve；Detection cell is connected to the end away from multiposition valve on public passage, and detection cell is used to detect water sample；Sampling peristaltic pump is located on the public passage connected between multiposition valve and detection cell, and sampling peristaltic pump is used to distilled water, water sample and reaction reagent being pumped into detection cell；Stepper motor is used to drive sampling peristaltic pump to rotate；The both ends of output channel are connected with waste liquid cylinder and detection cell respectively；Triple valve is on output channel；Peristaltic pump is stirred on reflux line.The adjustability of the sample rate of above-mentioned multi-channel flow passage switching device device is preferable.
Description
Technical field
The technical field of water quality detection is the utility model is related to, more particularly to a kind of multi-channel flow passage switching device.
Background technology
Multi-parameter water quality monitoring is one of important development direction of modern environment science and technology.Supervised for the water quality of multi-parameter
Survey for instrument, the design of flow path system is key technology.Flow path system must have the more reagent order sample introductions of Multi-example, stream to cut
Change the functions such as the accurate extraction with sample.In order to realize more reagent sequential samplings, the multi-channel flow passage switching of traditional multi-parameter
The multi-channel flow passage switching valve of device is realized using syringe pump.However, there is cost in above-mentioned multi-channel flow passage switching device
The problem of higher and sample rate adjustability is poor, it is difficult to meet the requirement of industrialization.
Utility model content
Based on this, it is necessary to provide a kind of multi-channel flow passage switching device.
A kind of multi-channel flow passage switching device, the multi-channel flow passage switching device include：
Multiposition valve, the multiposition valve are used to sequentially access distilled water, water sample and reaction reagent；
Public passage, the public passage connect with the multiposition valve；
Detection cell, the detection cell are connected to the end away from the multiposition valve, the detection cell on the public passage
For detecting water sample；
Peristaltic pump is sampled, the sampling peristaltic pump is described public located at being connected between the multiposition valve and the detection cell
On passage, the sampling peristaltic pump is used to distilled water, water sample and reaction reagent being pumped into the detection cell；
Stepper motor, the stepper motor are used to drive the sampling peristaltic pump to rotate；
Waste liquid cylinder, the waste liquid cylinder are used to save the waste liquid after detection；
Output channel, the both ends of the output channel are connected with the waste liquid cylinder and the detection cell respectively；
Triple valve, the triple valve is on the output channel；
Reflux line, one end of the reflux line are connected with the triple valve, the other end connection of the reflux line
On the public passage connected between the sampling peristaltic pump and the detection cell；And
Peristaltic pump is stirred, the stirring peristaltic pump is on the reflux line.
Further, multi-channel flow passage switching device also includes pipe clamping electromagnetic valve, and the pipe clamping electromagnetic valve is located at described three
On the output channel connected between port valve and the waste liquid cylinder；After detection cell is to the Concentration Testing of the pollutant of water sample,
Pipe clamping electromagnetic valve is opened, water sample is discharged into waste liquid cylinder and saved.
Further, the detection cell includes housing, quartz glass tube and heating wire, and cavity is offered on the housing,
The quartz glass tube is arranged in the cavity, and the both ends of the quartz glass tube respectively with the output channel and described
Public passage connects, and on the outer wall of the quartz glass tube, the heating wire is used to heat the stone heating wire winding
English glass tube, to be heated to the water sample, the sample in water sample is preferably mixed, improve multi-channel flow passage switching dress
The accuracy of detection put.
Further, the detection cell also includes temperature sensor, and the temperature sensor is located at the quartz glass tube
Above and with the heating wire communicate to connect, to control the heating wire cut-off, temperature sensor is used for the temperature for sensing the water sample
Degree；When the temperature of water sample reaches predetermined value, temperature sensor control heating wire cut-off, heating wire is avoided excessively to add water sample
Heat.
Further, the detection cell also includes detection light fixture, the first collimation lens, the second collimation lens and receives light
It is fine；Detection light fixture, first collimation lens, the second collimation lens and the reception optical fiber are located on the housing,
First collimation lens is adjacent to the detection light fixture, and first collimation lens and second collimation lens are located at respectively
The both sides of the housing, the reception optical fiber are located at side of second collimation lens away from first collimation lens, institute
State detection light fixture and produce light beam, the light beam is saturating by first collimation lens, the housing and second collimation respectively
Mirror, the light beam into the housing pass through the quartz glass tube, and the reception optical fiber is used to receive the light beam.
Further, multi-channel flow passage switching device also includes discharge duct, and the discharge duct connects with the detection cell
Logical, the discharge duct is used to discharge the air in the detection cell, avoids air accumulation expansion in detection cell from causing detection cell
Damage.
The beneficial effects of the utility model：Multiposition valve is used to sequentially access distilled water, water sample and reaction reagent, and sampling is wriggled
Pump is located on the public passage connected between multiposition valve and detection cell, and sampling peristaltic pump is rotated by driving stepper motor, makes water
Sample and reaction reagent are pumped into detection cell by sampling peristaltic pump and carry out hybrid reaction successively；Because detection cell passes through output channel
Connected with waste liquid cylinder, the waste liquid after detection flows into waste liquid cylinder by output channel and saved, so that follow-up focuses on；By
It is connected in one end of reflux line with triple valve, the other end of reflux line, which is connected between sampling peristaltic pump and detection cell, to be connected
Public passage on, stirring peristaltic pump the mixing liquid on output channel can be stirred fusion, after stirring mixing
Conjunction liquid is again introduced into detection cell and detected, and ensures the quick and precisely detection water sample of detection cell；Due to turning for sampling peristaltic pump
Speed is determined by the output speed of stepper motor, and the output speed of stepper motor and stop position are solely dependent upon pulse signal
Frequency and pulse number, without being influenceed by load change, the pulse number of pulse signal can be changed to control sampling to wriggle
The rotating speed of pump, the amount of solution of detection cell is pumped into regulation sampling peristaltic pump；It is more when needing to clean multi-channel flow passage switching device
Position valve access distilled water, the output speed of stepper motor is adjusted to most soon, makes sampling peristaltic pump that distilled water quickly are pumped into inspection
Survey in pond, shorten the time needed for cleaning multi-channel flow passage switching device；, will when multi-channel flow passage switching device detects water sample
The output speed of stepper motor is adjusted to moderate；Therefore, the sample rate of above-mentioned multi-channel flow passage switching device device is adjustable
Property is preferable；In addition above-mentioned multi-channel flow passage switching device will sample peristaltic pump and replace syringe pump, make multi-channel flow passage switching dress
The cost put is relatively low, disclosure satisfy that the requirement of industrialization.
Brief description of the drawings
Fig. 1 is the structural representation of the multi-channel flow passage switching device of an embodiment.
Embodiment
For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings
State.Better embodiment of the present utility model is given in accompanying drawing.But the utility model can come in many different forms
Realize, however it is not limited to embodiments described herein.On the contrary, the purpose for providing these embodiments is to make to this practicality newly
The more thorough and comprehensive that the disclosure of type understands.
As shown in figure 1, the multi-channel flow passage switching device 10 of an embodiment is used to detect water sample.The multichannel
Flow passage selector device includes multiposition valve 100, public passage 200, detection cell 300, sampling peristaltic pump 400, stepper motor 500, defeated
Go out pipeline 600, waste liquid cylinder 700, triple valve 800, reflux line 900 and stirring peristaltic pump 1100.The multiposition valve is used for order
Access distilled water, water sample and reaction reagent.Reaction reagent can be one or more.The public passage connects with the multiposition valve
It is logical.The detection cell is connected to the end away from the multiposition valve on the public passage, and the detection cell is used to detect water sample.
The sampling peristaltic pump is located on the public passage connected between the multiposition valve and the detection cell, and the sampling is wriggled
Pump is used to distilled water, water sample and reaction reagent being pumped into the detection cell.
The stepper motor is used to drive the sampling peristaltic pump to rotate.The rotating speed of sampling peristaltic pump passes through stepper motor
Output speed determines, and the output speed of stepper motor and stop position be solely dependent upon the frequency and umber of pulse of pulse signal
Mesh, without being influenceed by load change, the pulse number of pulse signal can be changed to control the rotating speed of sampling peristaltic pump, with regulation
Sampling peristaltic pump is pumped into the amount of solution of detection cell.When needing to clean multi-channel flow passage switching device, multiposition valve access distilled water,
The output speed of stepper motor is adjusted to most soon, makes sampling peristaltic pump that quickly distilled water is pumped into detection cell, shortens cleaning
Time needed for multi-channel flow passage switching device.When multi-channel flow passage switching device detects water sample, by the output of stepper motor
Rotational speed regulation is to moderate.
The order that multi-channel flow passage switching device is passed through liquid is distilled water, water sample, reaction reagent and distilled water.Specifically
Ground, before water sample is detected, first it is passed through distilled water and multi-channel flow passage switching device is cleaned, avoid multi-channel flow passage from switching
The impurity of residual in device impacts to the precision of detection.When detecting water sample, water sample and reaction reagent are passed through successively to inspection
Survey in pond and reacted, to be detected to water sample.After detecting water sample, the liquid of detection cell is discharged into waste liquid pool, and is led to
Enter distilled water to clean multi-channel flow passage switching device, until detection cell is calibrated to zero, now whole multi-channel flow passage is cut
Changing device reaches the standard that cleaning finishes.
The waste liquid cylinder is used to save the waste liquid after detection.The both ends of the output channel respectively with the waste liquid cylinder and institute
Detection cell connection is stated, the liquid after detection cell detection can be discharged into waste liquid cylinder by output channel to be saved, so as to follow-up
Focus on.The triple valve is on the output channel.One end of the reflux line is connected with the triple valve, described
The other end of reflux line is connected on the public passage connected between the sampling peristaltic pump and the detection cell, makes stream
Go out that the liquid of output channel can pass sequentially through reflux line and public passage is again flowed into detection cell.The stirring peristaltic pump
On the reflux line, stirring peristaltic pump can be stirred to the mixed liquor in reflux line, make mixed liquor fully equal
Even fusion, multi-channel flow passage switching device is set rapidly and accurately to detect water sample.
Further, multi-channel flow passage switching device also includes pipe clamping electromagnetic valve 1200, and the pipe clamping electromagnetic valve is located at institute
State on the output channel connected between triple valve and the waste liquid cylinder.When detection cell finishes to the Concentration Testing of the pollutant of water sample
Afterwards, pipe clamping electromagnetic valve is opened, water sample is discharged into waste liquid cylinder and saved.
Further, in order to improve the accuracy of detection of multi-channel flow passage switching device, the detection cell include housing 310,
Quartz glass tube 320 and heating wire 330, cavity 312 are offered on the housing, the quartz glass tube is arranged in the cavity
It is interior, and the both ends of the quartz glass tube connect with the output channel and the public passage respectively, the heating wire winding
In on the outer wall of the quartz glass tube, the heating wire is used to heat the quartz glass tube, to add to the water sample
Heat, the sample in water sample is preferably mixed, improve the accuracy of detection of multi-channel flow passage switching device.
Further, to avoid heating wire from also including temperature sensor 340, institute to water sample superheated, the detection cell
Temperature sensor is stated on the quartz glass tube and is communicated to connect with the heating wire, to control the heating wire cut-off,
Temperature sensor is used for the temperature for sensing the water sample.When the temperature of water sample reaches predetermined value, temperature sensor control electric heating
Silk power-off, avoids heating wire to water sample superheated.
Further, the detection cell also includes detection light fixture 350, the first collimation lens 360, the second collimation lens 370
With reception optical fiber 380.Detection light fixture, first collimation lens, the second collimation lens and the reception optical fiber are located at
On the housing, first collimation lens is adjacent to the detection light fixture, and first collimation lens and described second collimates
Lens are located at the both sides of the housing respectively, and it is saturating away from the described first collimation that the reception optical fiber is located at second collimation lens
The side of mirror, the detection light fixture produce light beam, and the light beam is respectively by first collimation lens, the housing and described
Second collimation lens, the light beam into the housing pass through the quartz glass tube, and the reception optical fiber is used to receive the light
Beam.
Further, multi-channel flow passage switching device also includes discharge duct 1300, the discharge duct and the detection
Pond connects, and the discharge duct is used to discharge the air in the detection cell, avoids air accumulation expansion in detection cell from causing to examine
Survey pond damage.
Above-mentioned multi-channel flow passage switching device, multiposition valve are used to sequentially access distilled water, water sample and reaction reagent, sampling
Peristaltic pump is located on the public passage connected between multiposition valve and detection cell, and sampling peristaltic pump is rotated by driving stepper motor,
Water sample and reaction reagent is pumped into successively in detection cell by sampling peristaltic pump and carry out hybrid reaction；Because detection cell passes through output
Pipeline connects with waste liquid cylinder, and the waste liquid after detection flows into waste liquid cylinder by output channel and saved, at follow-up concentration
Reason；Because one end of reflux line is connected with triple valve, the other end of reflux line be connected to sampling peristaltic pump and detection cell it
Between on the public passage that connects, stirring peristaltic pump can stir the mixing liquid on output channel fusion, stirring
Mixing liquid afterwards is again introduced into detection cell and detected, and ensures the quick and precisely detection water sample of detection cell；Because sampling is wriggled
The rotating speed of pump is determined by the output speed of stepper motor, and the output speed of stepper motor and stop position are solely dependent upon arteries and veins
The frequency and pulse number of signal are rushed, without being influenceed by load change, the pulse number that can change pulse signal is adopted to control
The rotating speed of sample peristaltic pump, the amount of solution of detection cell is pumped into regulation sampling peristaltic pump；Filled when needing cleaning multi-channel flow passage switching
When putting, multiposition valve access distilled water, the output speed of stepper motor is adjusted to most soon, makes sampling peristaltic pump quickly by distilled water
It is pumped into detection cell, shortens the time needed for cleaning multi-channel flow passage switching device；When multi-channel flow passage switching device detects water
During sample, the output speed of stepper motor is adjusted to moderate；Therefore, the sample rate of above-mentioned multi-channel flow passage switching device device
Adjustability it is preferable；In addition above-mentioned multi-channel flow passage switching device will sample peristaltic pump and replace syringe pump, make multi-channel flow passage
The cost of switching device is relatively low, disclosure satisfy that the requirement of industrialization.
Embodiment described above only expresses several embodiments of the present utility model, and it describes more specific and detailed
Carefully, but the limitation to the utility model patent scope therefore can not be interpreted as.It should be pointed out that for the general of this area
For logical technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these are all
Belong to the scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (6)
1. a kind of multi-channel flow passage switching device, it is characterised in that the multi-channel flow passage switching device includes：
Multiposition valve, the multiposition valve are used to sequentially access distilled water, water sample and reaction reagent；
Public passage, the public passage connect with the multiposition valve；
Detection cell, the detection cell are connected to the end away from the multiposition valve, the detection cell on the public passage and are used for
Detect water sample；
Peristaltic pump is sampled, the sampling peristaltic pump is located at the public passage connected between the multiposition valve and the detection cell
On；The sampling peristaltic pump is used to distilled water, water sample and reaction reagent being pumped into the detection cell；
Stepper motor, the stepper motor are used to drive the sampling peristaltic pump to rotate；
Waste liquid cylinder, the waste liquid cylinder are used to save the waste liquid after detection；
Output channel, the both ends of the output channel are connected with the waste liquid cylinder and the detection cell respectively；
Triple valve, the triple valve is on the output channel；
Reflux line, one end of the reflux line are connected with the triple valve, and the other end of the reflux line is connected to institute
State on the public passage connected between sampling peristaltic pump and the detection cell；And stirring peristaltic pump, the stirring are wriggled
Pump is on the reflux line.
2. multi-channel flow passage switching device according to claim 1, it is characterised in that described also including pipe clamping electromagnetic valve
Pipe clamping electromagnetic valve is located on the output channel connected between the triple valve and the waste liquid cylinder.
3. multi-channel flow passage switching device according to claim 1, it is characterised in that the detection cell includes housing, stone
English glass tube and heating wire, cavity are offered on the housing, the quartz glass tube is arranged in the cavity, and the stone
The both ends of English glass tube connect with the output channel and the public passage respectively, and the heating wire winding is in the quartzy glass
On the outer wall of glass pipe, the heating wire is used to heat the quartz glass tube, to be heated to the water sample.
4. multi-channel flow passage switching device according to claim 3, it is characterised in that the detection cell also includes temperature and passed
Sensor, the temperature sensor communicates to connect on the quartz glass tube and with the heating wire, to control the electric heating
Silk power-off；The temperature sensor is used for the temperature for sensing the water sample.
5. multi-channel flow passage switching device according to claim 4, it is characterised in that the detection cell also includes detection lamp
Tool, the first collimation lens, the second collimation lens and reception optical fiber；The detection light fixture, first collimation lens, the second collimation
Lens and the reception optical fiber are on the housing, and first collimation lens is adjacent to the detection light fixture, and described the
Collimating lens and second collimation lens are located at the both sides of the housing respectively, and the reception optical fiber is accurate positioned at described second
Straight side of the lens away from first collimation lens, the detection light fixture produce light beam, and the light beam is respectively by described the
Collimating lens, the housing and second collimation lens, the light beam into the housing pass through the quartz glass tube, institute
Reception optical fiber is stated to be used to receive the light beam.
6. multi-channel flow passage switching device according to claim 1, it is characterised in that also including discharge duct, the row
Feed channel connects with the detection cell, and the discharge duct is used to discharge the air in the detection cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720991985.8U CN207198137U (en) | 2017-08-09 | 2017-08-09 | Multi-channel flow passage switching device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720991985.8U CN207198137U (en) | 2017-08-09 | 2017-08-09 | Multi-channel flow passage switching device |
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| CN207198137U true CN207198137U (en) | 2018-04-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111735906A (en) * | 2020-06-30 | 2020-10-02 | 力合科技（湖南）股份有限公司 | Method for determining alkalinity of water sample and analysis system |
| CN113029955A (en) * | 2021-03-29 | 2021-06-25 | 江苏省环境监测中心 | Multichannel multithreading CODcr measurement system |
| CN113984296A (en) * | 2021-10-12 | 2022-01-28 | 珠海格力智能装备有限公司 | Air tightness detection device and control method thereof |
-
2017
- 2017-08-09 CN CN201720991985.8U patent/CN207198137U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111735906A (en) * | 2020-06-30 | 2020-10-02 | 力合科技（湖南）股份有限公司 | Method for determining alkalinity of water sample and analysis system |
| CN113029955A (en) * | 2021-03-29 | 2021-06-25 | 江苏省环境监测中心 | Multichannel multithreading CODcr measurement system |
| CN113984296A (en) * | 2021-10-12 | 2022-01-28 | 珠海格力智能装备有限公司 | Air tightness detection device and control method thereof |
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