CN219245301U - Sample injection and circulation cleaning device for laser diffraction particle size analyzer - Google Patents
Sample injection and circulation cleaning device for laser diffraction particle size analyzer Download PDFInfo
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- CN219245301U CN219245301U CN202223274923.5U CN202223274923U CN219245301U CN 219245301 U CN219245301 U CN 219245301U CN 202223274923 U CN202223274923 U CN 202223274923U CN 219245301 U CN219245301 U CN 219245301U
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Abstract
The utility model provides a sample injection and circulation cleaning device for a laser diffraction particle size analyzer, wherein an automatic sample injection device is arranged on one side of a sample dispersion tank, the circulation cleaning device comprises a cleaning liquid suction pipeline, a filtering component, a clean water inlet component, a circulation component and a waste liquid recovery component, one end of the cleaning liquid suction pipeline is arranged in the sample dispersion tank, the other end of the cleaning liquid suction pipeline is connected with the filtering component, the clean water inlet component is arranged on the cleaning liquid suction pipeline, the filtering component is connected with the circulation component, the circulation component is connected with the sample dispersion tank, and the waste liquid recovery component is arranged in the circulation component. According to the sample injection and circulation cleaning device for the laser diffraction particle size analyzer, a circulation cleaning system is established, so that samples can be conveniently recovered, the state of the dispersed samples can be observed or recycled, meanwhile, the separated dispersing agent flows back to be used for cleaning a sample dispersing tank, and the waste of a large amount of dispersing agent caused by each new dispersing agent replacement is avoided.
Description
Technical Field
The utility model belongs to the technical field of optical measuring instruments, and particularly relates to a sample injection and circulation cleaning device for a laser diffraction particle size analyzer.
Background
The main structure of the laser diffraction particle size analyzer comprises: optical measuring unit, dispersing device with stirrer and ultrasonic generator, pump and catheter. For wet testing, the sample dispersion tank is used for containing a dispersion liquid of a sample to be tested, and the sample or the sample dispersion liquid needs to be added into the sample dispersion tank when the instrument reaches a certain condition. After each test, the sample dispersion tank and the conduit system are filled with the dispersion of the sample to be tested, and therefore the system needs to be cleaned after the test is completed.
For the sample injection system, some samples to be tested can be directly poured into the sample dispersion tank for testing after the instrument reaches a certain condition, while some samples to be tested need to be subjected to pre-dispersion treatment such as ultrasonic treatment, and then the dispersion liquid after pre-dispersion is poured into the sample dispersion tank for testing. Since the pre-dispersion is difficult to accurately formulate in the amount required for practical testing, the dispersion poured into the sample dispersion tank has only a portion of the pre-dispersion, and thus may cause non-uniformity in sampling. In addition, the length of time that the pre-dispersion is allowed to stand prior to being added to the sample dispersion tank may also cause non-uniformity in sample dispersion, resulting in the sample actually being tested by pouring into the sample dispersion tank losing the representative of the original sample. If the sample can be automatically injected under the condition that the pre-dispersion is not stopped, the whole sample injection range can be ensured to the greatest extent.
There are generally two types of sample dispersion tanks of a laser diffraction particle size analyzer dispersion apparatus: first, the circulating system is connected, and clean water can be directly introduced after the test is completed to clean the sample dispersion tank and drain waste liquid. Second, a simple beaker was used as a sample dispersion tank, and repeated manual washing was required after the completion of the test. The first sample dispersion tank has high cost, is more suitable for test experiments using water as a dispersing agent, and is not suitable for test using an organic solvent as the dispersing agent. The second sample dispersion tank is simple and convenient to use, but the cleaning process is complicated, and the second sample dispersion tank needs to be repeatedly carried out for many times. Both cleaning modes can cause waste of a large amount of dispersing agent (mostly water) and are not beneficial to sample recovery.
Disclosure of Invention
In view of the above, the utility model aims to provide a sample injection and circulation cleaning device for a laser diffraction particle size analyzer, so as to solve the problems of complicated flow and difficult recovery of samples.
In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:
an automatic sample injection device for a laser diffraction particle size analyzer comprises a sample pre-dispersion liquid storage tank, an external ultrasonic device and a sample injection pipeline;
one end of the sample introduction pipeline is arranged in the sample pre-dispersion liquid storage tank, and the external ultrasonic device is arranged at the outer side of the sample pre-dispersion liquid storage tank;
the other end of the sample introduction pipeline is arranged in the sample dispersing groove;
the sample injection pipeline is sequentially provided with a first liquid suction pump and a mechanical check valve, and the mechanical check valve is arranged at one end close to the sample dispersing groove.
The main machine of the particle size analyzer is communicated with the sample dispersion tank through an instrument analysis matched liquid inlet and outlet pipeline, and a mechanical stirring device and a built-in ultrasonic device are arranged at the end part of the sample dispersion tank through an instrument analysis matched liquid inlet and outlet pipeline.
The mechanical stirring device comprises a motor, a stirring rod and stirring blades, wherein the fixed end of the motor is arranged on the upper part of the sample dispersing groove 2, the output end of the motor is connected with the stirring rod, and the stirring blades are circumferentially arranged at the end part of the stirring rod.
The external ultrasonic device and the built-in ultrasonic device both adopt the prior art.
A circulation cleaning device for a laser diffraction particle size analyzer, which uses the automatic sample injection device; the automatic sampling device is arranged on one side of the sample dispersion tank, the circulating cleaning device comprises a cleaning liquid suction pipeline, a filtering component, a clean water inlet component, a circulating component and a waste liquid recovery component, one end of the cleaning liquid suction pipeline is arranged in the sample dispersion tank, the other end of the cleaning liquid suction pipeline is connected with the filtering component, the clean water inlet component is arranged on the cleaning liquid suction pipeline, the filtering component is connected with the circulating component, the circulating component is connected with the sample dispersion tank, and the waste liquid recovery component is arranged in the circulating component.
Further, the cleaning liquid suction pipeline is connected with a clean water inlet component through a three-way valve, and the clean water inlet component comprises a clean water storage tank, a clean water conveying pipeline and a first electromagnetic valve;
the clear water storage tank is communicated with a three-way valve of the clear water conveying pipeline through the clear water conveying pipeline, and the first electromagnetic valve is arranged on the clear water conveying pipeline.
One end of the cleaning liquid suction pipeline is arranged in the sample dispersing groove, and the other end of the cleaning liquid suction pipeline is arranged in the filtering component.
Further, the filtering assembly comprises a filtering box body and a sand core filter plate, wherein the sand core filter plate is arranged in the filtering box body; the upper end opening of the filter box body, the bottom of the filter box body is funnel-shaped, and the bottom of the filter box body is connected with the circulating assembly.
The end part of the cleaning liquid suction pipeline is arranged in the filter box body.
Further, the circulating assembly comprises a cleaning reflux pipeline, a second liquid suction pump, a flowmeter and a pressurizing pump, one end of the cleaning reflux pipeline is connected with the bottom of the filtering box body, and the other end of the cleaning reflux pipeline is arranged in the sample dispersing groove;
the second liquid suction pump and the flowmeter are sequentially arranged on the cleaning return pipeline, and the second liquid suction pump is arranged on one side close to the filtering assembly;
the cleaning reflux pipeline is connected with the waste liquid recovery component through a second three-way valve;
the pressure pump is arranged on the cleaning return pipeline and is arranged on one side of the second three-way valve, which is close to the sample dispersing groove.
Further, a shower nozzle is arranged at the end part of the sample dispersion tank, which is arranged on the cleaning reflux pipeline.
Further, the waste liquid recovery assembly comprises a waste liquid discharge pipeline and a waste liquid collecting tank, one end of the waste liquid discharge pipeline is connected with the cleaning reflux pipeline through a second three-way valve, the other end of the waste liquid discharge pipeline is connected with the waste liquid collecting tank, and a second electromagnetic valve is arranged on the waste liquid discharge pipeline.
Compared with the prior art, the sample injection and circulation cleaning device for the laser diffraction particle size analyzer has the following beneficial effects:
1. the first liquid suction pump is used during sample injection, so that the sample pre-dispersion liquid can be timely added into the sample dispersion tank for testing in a state of uniform dispersion, the sampling error introduced by the standing time between the pre-dispersion and the actual testing of the sample is reduced, and the residual of sample particles possibly caused by manually pouring the pre-dispersion liquid is avoided.
2. The device can separate sample particles from the dispersing agent by establishing a circulating cleaning system, is convenient for sample recovery, so as to observe the state of the dispersed sample or recover and recycle, and meanwhile, the separated dispersing agent flows back to be used for cleaning a sample dispersing tank, thereby avoiding the waste of a large amount of dispersing agent caused by each new dispersing agent replacement.
3. Compared with manual repeated cleaning, the circulating cleaning device of the device can reduce a large number of manual operations and is more convenient.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
fig. 1 is an overall schematic diagram of a sample injection and circulation cleaning device for a laser diffraction particle size analyzer according to an embodiment of the present utility model.
Reference numerals illustrate:
1. a particle size analyzer host; 2. a sample dispersion tank; 3. an ultrasonic device is arranged in the ultrasonic device; 4. the instrument analyzes the matched liquid inlet and outlet pipeline; 5. an external ultrasound device; 6. a sample pre-dispersion reservoir; 7. a first liquid suction pump; 8. a mechanical check valve; 9. a sample injection pipeline; 10. cleaning the liquid suction pipeline; 11. a first three-way valve; 12. a clear water delivery line; 13. a first electromagnetic valve; 14. a clear water reserve tank; 15. a filtering device; 16. a sand core filter plate; 17. a second liquid suction pump; 18. a flow meter; 19. cleaning a return line; 20. a second three-way valve; 21. a second electromagnetic valve; 22. a waste liquid discharge line; 23. a waste liquid collection tank; 24. a spray head; 25. and a pressurizing pump.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
The utility model will be described in detail below with reference to the drawings in connection with embodiments.
An automatic sample injection device for a laser diffraction particle size analyzer is shown in fig. 1, and comprises a sample pre-dispersion liquid storage tank 6, an external ultrasonic device 5 and a sample injection pipeline 9; one end of a sample injection pipeline is arranged in the pre-dispersion liquid storage tank 6, and the other end of the sample injection pipeline 9 is arranged in the sample dispersion tank 2; the sample feeding pipeline 9 is sequentially provided with a first liquid suction pump 7 and a mechanical check valve 8, and the mechanical check valve 8 is arranged at one end close to the sample dispersing groove 2. The main body 1 of the particle size analyzer is communicated with the sample dispersion tank 2 through an instrument analysis matched sleeve inlet and outlet pipeline 4, a mechanical stirring device is arranged at the end part of the sample dispersion tank 2 through the instrument analysis matched sleeve inlet and outlet pipeline 4, and a built-in ultrasonic device 3 is arranged in the sample dispersion tank 2. The mechanical stirring device comprises a motor, a stirring rod and stirring blades, wherein the fixed end of the motor is arranged on the upper part of the sample dispersing groove 2, the output end of the motor is connected with the stirring rod, and the stirring blades are circumferentially arranged at the end part of the stirring rod.
The external ultrasonic device and the built-in ultrasonic device both adopt the prior art. The model of the external ultrasonic device 5 is new sesame SB-5200D. The main body 1 of the particle size analyzer is communicated with the sample dispersing tank 2 through an instrument analysis matching liquid inlet and outlet pipeline 4. The particle size analyzer adopts the existing equipment, and the model of the particle size analyzer is a Markov MS3000 particle size analyzer.
A circulation cleaning device for a laser diffraction particle size analyzer, which uses the automatic sample injection device; the automatic sampling device is arranged on one side of the sample dispersion tank 2, the circulating cleaning device comprises a cleaning liquid suction pipeline 10, a filtering component, a clear water inlet component, a circulating component and a waste liquid recovery component, one end of the cleaning liquid suction pipeline 10 is arranged in the sample dispersion tank 2, the other end of the cleaning liquid suction pipeline 10 is connected with the filtering component, the clear water inlet component is arranged on the cleaning liquid suction pipeline 10, the filtering component is connected with the circulating component, the circulating component is connected with the sample dispersion tank 2, and the waste liquid recovery component is arranged in the circulating component. The cleaning liquid suction pipeline 10 is connected with a clean water inlet assembly through a three-way valve, and the clean water inlet assembly comprises a clean water storage tank 14, a clean water conveying pipeline 12 and a first electromagnetic valve 13; the clear water storage tank is communicated with a three-way valve of the clear water conveying pipeline 12 through the clear water conveying pipeline 12, and a first electromagnetic valve 13 is arranged on the clear water conveying pipeline 12. One end of the cleaning liquid suction line 10 is provided in the sample dispersion tank 2, and the other end of the cleaning liquid suction line 10 is provided in the filter assembly.
The filter assembly comprises a filter box body and a sand core filter plate 16, and the sand core filter plate 16 is arranged in the filter box body; the upper end opening of the filter box body, the bottom of the filter box body is funnel-shaped, and the bottom of the filter box body is connected with the circulating assembly. The end of the wash suction line 10 is disposed within the filter housing. The circulating assembly comprises a cleaning reflux pipeline 19, a second liquid suction pump 17, a flowmeter 18 and a pressurizing pump 25, one end of the cleaning reflux pipeline 19 is connected with the bottom of the filtering box body, and the other end of the cleaning reflux pipeline is arranged in the sample dispersing tank 2; the second liquid suction pump 17 and the flowmeter 18 are sequentially arranged on the cleaning return pipeline 19, and the second liquid suction pump 17 is arranged on one side close to the filter assembly; the cleaning reflux pipeline 19 is connected with the waste liquid recovery component through a second three-way valve 20; a pressurizing pump 25 is provided on the purge return line 19, and the pressurizing pump 25 is provided on a side of the second three-way valve 20 close to the sample dispersion tank 2.
The cleaning return pipeline 19 is arranged at the end part of the sample dispersion tank 2, a spray head 24 is arranged on the end part of the sample dispersion tank, and a plurality of evenly distributed water outlets are arranged on the spray head 24. The waste liquid recovery assembly comprises a waste liquid discharge pipeline 22 and a waste liquid collecting tank 23, one end of the waste liquid discharge pipeline 22 is connected with the cleaning reflux pipeline 19 through a second three-way valve 20, the other end of the waste liquid discharge pipeline 22 is connected with the waste liquid collecting tank 23, and a second electromagnetic valve 21 is arranged on the waste liquid discharge pipeline 22.
In specific use, an automatic sample feeding part and a pre-dispersion liquid storage tank are added with a proper amount of sample to be tested and dispersing agent, and the sample is placed in an ultrasonic device to be subjected to ultrasonic pre-dispersion according to ultrasonic conditions required by the test. One end of the sample introduction pipeline 9 extends into the bottom of the sample pre-dispersion liquid storage tank 6, and the other end is fixed above the sample dispersion tank 2. After the pre-dispersion is finished, the ultrasonic device is not closed, the first liquid suction pump 7 on the sample injection pipeline 9 is started, the mechanical check valve 8 is in an open state, and the sample pre-dispersion liquid enters the sample dispersion tank 2 for preparation test. Observing that the sample injection amount reaches the required test condition, closing the check valve 8 and the first liquid suction pump 7, and closing the ultrasonic device. And (5) completing sample injection and starting testing.
After the test is completed, the system cleaning is performed by using the circulating cleaning device. The built-in stirring and ultrasonic functions of the instrument are continuously started, the first three-way valve 11 is communicated with the cleaning liquid suction pipeline 10 and the filtering device 15, the second three-way valve 20 is communicated with the cleaning reflux pipeline 19 and the sample dispersion tank 2, the second liquid suction pump 17 is started, dispersion liquid in the sample dispersion tank 2 flows through the cleaning liquid suction pipeline 10 to enter the filtering device 15, and after the sample is filtered, the dispersing agent continuously flows through the flowmeter 18 and the cleaning reflux pipeline 19 and flows back to the sample dispersion tank 2.
Wherein, the ultrasonic dispersing device 3 is arranged in the instrument, the sample dispersed in the sample dispersing tank 2 is collected on the filtering device 15 after a period of circulating cleaning, and the filtered dispersing agent circularly flows in the pipeline.
In some embodiments, too much sample deposited on the filter device 15 may cause clogging of the pipeline, so that it is necessary to observe the reading of the flow meter 18, stop the circulation cleaning when the reading of the flow meter 18 drops to half the reading of the initial circulation, restart the circulation after replacing the sand core filter plate 16, and after a period of circulation cleaning, switch the second three-way valve 20 to connect the cleaning return pipeline 19 with the waste liquid discharge pipeline 22, and return to the original position after discharging part of the dispersion.
A second solenoid valve is provided on the waste liquid discharge line 22 to shut off the waste liquid discharge line 22 when no liquid discharge is required. The first three-way valve 11 is switched to communicate the clear water delivery pipeline 12 with the filtering device 15, and a part of clear water flushing pipeline is introduced. If necessary, the pressurizing pump 25 may be turned on to cause the flowing liquid to flush the built-in stirring portion 3 through the shower head 24.
A first solenoid valve is provided on the fresh water delivery line 12 to shut off the fresh water delivery line 12 when no water supply is required.
Preferably, as shown in fig. 1, the connection part between the spray head 24 and the cleaning return pipeline 19 is a hose, the lower end of the spray head 24 is inclined inwards and the direction is adjustable, so that the built-in stirring part 3 can be fully washed, and the cleaning of the stirring part is ensured.
By observing the liquid amount in the sample dispersion tank 2, the two first three-way valves 11 and the second three-way valve 20 on the cleaning liquid suction pipeline 10 and the cleaning return pipeline 19 can be switched at any time, and part of clear water flushing pipeline is introduced and redundant waste liquid is discharged in time.
In some preferred embodiments, see fig. 1, the bottom of the filter device 15 is funnel-shaped, and the purge return line 19 is connected to the lowest part of the filter device 15 so that during purging, both the dispersant and the fresh water can flow out entirely without remaining.
The above description of the utility model is intended to be illustrative, and not restrictive, and it will be appreciated by those skilled in the art that many modifications, changes, or equivalents may be made thereto without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (9)
1. A kind of sample introduction device used for laser diffraction particle size analyzer, characterized by: comprises a sample pre-dispersion liquid storage tank (6), an external ultrasonic device (5) and a sample injection pipeline (9);
one end of a sample introduction pipeline (9) is arranged in the sample pre-dispersion liquid storage tank (6), and an external ultrasonic device (5) is arranged at the outer side of the sample pre-dispersion liquid storage tank (6);
the other end of the sample introduction pipeline (9) is arranged in the sample dispersing groove (2);
the sample injection pipeline (9) is sequentially provided with a first liquid suction pump (7) and a mechanical check valve (8), and the mechanical check valve (8) is arranged at one end close to the sample dispersing groove (2).
2. The sample introduction device for a laser diffraction particle size analyzer of claim 1, wherein: the particle size analyzer main machine (1) is communicated with the sample dispersion tank (2) through an instrument analysis matching liquid inlet and outlet pipeline (4), and a mechanical stirring device and a built-in ultrasonic device (3) are arranged at the end part of the sample dispersion tank (2) through the instrument analysis matching liquid inlet and outlet pipeline (4).
3. A circulation cleaning apparatus for a laser diffraction particle size analyzer, using a sample introduction apparatus for a laser diffraction particle size analyzer according to any one of claims 1 to 2, characterized in that: the automatic sampling device is arranged on one side of the sample dispersion tank (2), the circulating cleaning device comprises a cleaning liquid suction pipeline (10), a filtering component, a clean water inlet component, a circulating component and a waste liquid recovery component, one end of the cleaning liquid suction pipeline (10) is arranged in the sample dispersion tank (2), the other end of the cleaning liquid suction pipeline (10) is connected with the filtering component, the clean water inlet component is arranged on the cleaning liquid suction pipeline (10), the filtering component is connected with the circulating component, the circulating component is connected with the sample dispersion tank (2), and the waste liquid recovery component is arranged in the circulating component.
4. A circulation cleaning apparatus for a laser diffraction particle size analyzer as claimed in claim 3, wherein: the cleaning liquid suction pipeline (10) is connected with a clean water inlet assembly through a three-way valve, and the clean water inlet assembly comprises a clean water storage tank (14), a clean water conveying pipeline (12) and a first electromagnetic valve (13);
the clear water storage tank (14) is communicated with a three-way valve of the clear water conveying pipeline (12) through the clear water conveying pipeline (12), and the first electromagnetic valve (13) is arranged on the clear water conveying pipeline (12);
one end of the cleaning liquid suction pipeline (10) is arranged in the sample dispersing groove (2), and the other end of the cleaning liquid suction pipeline (10) is arranged in the filter component.
5. The circulation cleaning apparatus for a laser diffraction particle size analyzer of claim 4, wherein: the filter assembly comprises a filter box body and a sand core filter plate (16), and the sand core filter plate (16) is arranged in the filter box body; the upper end of the filtering box body is provided with an opening, the bottom of the filtering box body is funnel-shaped, and the bottom of the filtering box body is connected with the circulating assembly;
the end part of the cleaning liquid suction pipeline (10) is arranged in the filter box body.
6. A circulation cleaning apparatus for a laser diffraction particle size analyzer as claimed in claim 5, wherein: the circulating assembly comprises a cleaning reflux pipeline (19), a second liquid suction pump (17), a flowmeter (18) and a pressurizing pump (25), one end of the cleaning reflux pipeline (19) is connected with the bottom of the filtering box body, and the other end of the cleaning reflux pipeline is arranged in the sample dispersing groove (2);
the second liquid suction pump (17) and the flowmeter (18) are sequentially arranged on the cleaning return pipeline (19), and the second liquid suction pump (17) is arranged on one side close to the filtering assembly.
7. The circulation cleaning apparatus for a laser diffraction particle size analyzer of claim 6, wherein: the cleaning return pipeline (19) is connected with the waste liquid recovery component through a second three-way valve (20);
the pressurizing pump (25) is arranged on the cleaning return pipeline (19), and the pressurizing pump (25) is arranged on one side of the second three-way valve (20) close to the sample dispersing groove (2).
8. A circulation cleaning apparatus for a laser diffraction particle size analyzer as claimed in claim 7, wherein: the cleaning return pipeline (19) is arranged at the end part of the sample dispersion tank (2) and is provided with a spray head (24).
9. A circulation cleaning apparatus for a laser diffraction particle size analyzer as claimed in claim 8, wherein: the waste liquid recovery assembly comprises a waste liquid discharge pipeline (22) and a waste liquid collecting tank (23), one end of the waste liquid discharge pipeline (22) is connected with a cleaning reflux pipeline (19) through a second three-way valve (20), the other end of the waste liquid discharge pipeline (22) is connected with the waste liquid collecting tank (23), and a second electromagnetic valve (21) is arranged on the waste liquid discharge pipeline (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223274923.5U CN219245301U (en) | 2022-12-07 | 2022-12-07 | Sample injection and circulation cleaning device for laser diffraction particle size analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223274923.5U CN219245301U (en) | 2022-12-07 | 2022-12-07 | Sample injection and circulation cleaning device for laser diffraction particle size analyzer |
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| Publication Number | Publication Date |
|---|---|
| CN219245301U true CN219245301U (en) | 2023-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223274923.5U Active CN219245301U (en) | 2022-12-07 | 2022-12-07 | Sample injection and circulation cleaning device for laser diffraction particle size analyzer |
Country Status (1)
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| CN (1) | CN219245301U (en) |
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2022
- 2022-12-07 CN CN202223274923.5U patent/CN219245301U/en active Active
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