CN220760433U - High clean washs filtration and flow resistance test equipment - Google Patents
High clean washs filtration and flow resistance test equipment Download PDFInfo
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- CN220760433U CN220760433U CN202322434067.3U CN202322434067U CN220760433U CN 220760433 U CN220760433 U CN 220760433U CN 202322434067 U CN202322434067 U CN 202322434067U CN 220760433 U CN220760433 U CN 220760433U
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- fine filter
- measuring device
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- 238000012360 testing method Methods 0.000 title claims abstract description 49
- 238000001914 filtration Methods 0.000 title claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 103
- 238000003860 storage Methods 0.000 claims abstract description 42
- 238000005259 measurement Methods 0.000 claims description 7
- 238000009530 blood pressure measurement Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims 2
- 238000004140 cleaning Methods 0.000 abstract description 40
- 238000010992 reflux Methods 0.000 abstract description 6
- 239000002245 particle Substances 0.000 abstract description 5
- 239000002609 medium Substances 0.000 description 12
- 239000012530 fluid Substances 0.000 description 5
- 230000003749 cleanliness Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910021642 ultra pure water Inorganic materials 0.000 description 3
- 239000012498 ultrapure water Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 filtered Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012913 medium supplement Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Abstract
The utility model provides high-cleanliness cleaning filtering and flow resistance testing equipment, wherein a reflux port is connected with a liquid storage tank through a first pipeline on-off switch, a first fine filter and a flow measuring device pipeline in sequence, the liquid storage tank is connected with an outflow port through a first liquid conveying device, a second fine filter and a second pipeline on-off switch pipeline in sequence, the first pressure measuring device is arranged in a connecting pipeline between the first pipeline on-off switch and the first fine filter, the second pressure measuring device is arranged in a connecting pipeline between the second fine filter and the second pipeline on-off switch, a third fine filter is arranged in a connecting pipeline between the first fine filter and the flow measuring device, and the first fine filter, the third fine filter and the second fine filter are respectively a 10um filter, a 5um filter and a 3um filter. The utility model can clean the workpiece, and the clean particle in the workpiece after cleaning is not more than 5um, and can also test the internal resistance.
Description
Technical Field
The utility model relates to the technical field of mechanical equipment, in particular to the technical field of cleaning equipment, and particularly relates to high-cleanliness cleaning filtering and flow resistance testing equipment.
Background
The existing conventional cleaning methods of the container or the pipeline are as follows: firstly pumping working medium to wash the container, and then placing the container into a baking oven to be dried.
The Chinese patent of the utility model discloses a high-clean dry replacement integrated device (ZL 202221542590.7), wherein a return port is respectively connected with a first pipeline on-off switch and a fourth pipeline on-off switch through a first fine filter in a pipeline way, the first pipeline on-off switch is connected with a liquid conveying device through a replacement working medium liquid storage tank in a pipeline way, the liquid conveying device is connected with a second pipeline on-off switch in a pipeline way, a discharge port is respectively connected with the second pipeline on-off switch and a third pipeline on-off switch through a second fine filter in a pipeline way, a gas storage bottle is connected with a heater through a gas inlet pipeline, the heater is connected with the third pipeline on-off switch in a pipeline way, and the fourth pipeline on-off switch is connected with a gas outlet. The high-cleanness drying and replacement integrated equipment can quickly and conveniently clean and replace a container or a pipeline with residual liquid in the drying process, and cannot bring particles above 40 mu m.
However, with the progress of the times and the development of technology, there is a higher requirement for the workpiece to be cleaned, if there are redundant particles in the workpiece to be cleaned, the workpiece needs to be cleaned with ultrapure water, filtered, particles larger than 5um cannot be required, the cleaned workpiece after the filtering needs to be cleaned, and the internal resistance of the cleaned workpiece needs to be tested, but the conventional cleaning method or the Gao Jiejing drying and replacing integrated device cannot meet the requirement in the prior art.
Therefore, it is necessary to provide a high-cleanliness cleaning, filtering and flow resistance testing device, which can clean a workpiece, and clean the inside of the workpiece, the cleanliness particulate matters of which are not more than 5um, and can also test the inside resistance.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model aims to provide the high-cleanliness cleaning filtering and flow resistance testing equipment which can clean a workpiece, and the cleanliness particulate matters in the cleaned workpiece are not more than 5um, can test the internal resistance of the workpiece, and is suitable for large-scale popularization and application.
The utility model also aims to provide high-cleanness cleaning filtering and flow resistance testing equipment which is ingenious in design, simple in structure, convenient to manufacture, low in manufacturing cost and suitable for large-scale popularization and application.
In order to achieve the above object, the present utility model provides a high-clean cleaning filtration and flow resistance test device, which comprises a backflow port, a first pipeline on-off switch, a first fine filter, a flow measurement device, a liquid storage tank, a first liquid conveying device, a second fine filter, a second pipeline on-off switch and a outflow port, wherein the backflow port is connected with the first fine filter through the first pipeline on-off switch pipeline, the first fine filter is connected with the liquid storage tank through the flow measurement device pipeline, the liquid storage tank is connected with the second fine filter through the first liquid conveying device pipeline, and the second fine filter is connected with the outflow port through the second pipeline on-off switch pipeline, the high-clean cleaning filtration and flow resistance test device is characterized in that the high-clean cleaning filtration and flow resistance test device further comprises a first pressure measurement device, a second pressure measurement device and a third fine filter, wherein:
the first pressure measuring device is arranged in a connecting pipeline between the first pipeline on-off switch and the first fine filter, the second pressure measuring device is arranged in the connecting pipeline between the second fine filter and the second pipeline on-off switch, the third fine filter is arranged in the connecting pipeline between the first fine filter and the flow measuring device, the first fine filter is a 10um filter, the third fine filter is a 5um filter, and the second fine filter is a 3um filter.
Preferably, the first pipeline on-off switch and the second pipeline on-off switch are electromagnetic valves.
Preferably, the flow measuring device is a flow sensor.
Preferably, the first pressure measuring device and the second pressure measuring device are both pressure sensors.
Preferably, the first liquid delivery device is a circulation pump.
Preferably, the high-cleanliness cleaning, filtering and flow resistance testing device further comprises a standby liquid storage barrel and a second liquid conveying device, and the standby liquid storage barrel is connected with the liquid storage tank through a pipeline of the second liquid conveying device.
More preferably, the second liquid delivery device is a filling pump.
Preferably, the high-cleanliness cleaning, filtering and flow resistance testing device further comprises a gas discharge port and a third pipeline on-off switch, and the liquid storage tank is connected with the gas discharge port through the third pipeline on-off switch pipeline.
Preferably, the high-cleanliness cleaning, filtering and flow resistance testing device further comprises a liquid outlet and a fourth pipeline on-off switch, and the liquid storage tank is connected with the liquid outlet through the fourth pipeline on-off switch pipeline.
Preferably, the high-cleanliness cleaning, filtering and flow resistance testing device further comprises a liquid level measuring device, wherein the liquid level measuring device is installed in the liquid storage tank and used for measuring the liquid level of the liquid storage tank.
The utility model has the beneficial effects that:
1. the high-cleanliness cleaning filtering and flow resistance testing equipment has the advantages that the backflow port is connected with the first fine filter through the first pipeline on-off switch pipeline, the first fine filter is connected with the liquid storage tank through the flow measuring device pipeline, the liquid storage tank is connected with the second fine filter through the first liquid conveying device pipeline, the second fine filter is connected with the outflow port through the second pipeline on-off switch pipeline, the first pressure measuring device is arranged in the connecting pipeline between the first pipeline on-off switch and the first fine filter, the second pressure measuring device is arranged in the connecting pipeline between the second fine filter and the second pipeline on-off switch, the third fine filter is arranged in the connecting pipeline between the first fine filter and the flow measuring device, the first fine filter is a 10um filter, the third fine filter is a 5um filter, and the second fine filter is a 3um filter, so that a workpiece can be cleaned, clean particles inside the cleaned workpiece are not more than 5um, the internal resistance of the workpiece can be tested, and the high-cleanliness cleaning filtering and flow resistance testing equipment is suitable for large-scale popularization and application.
2. The high-cleanliness cleaning filtering and flow resistance testing equipment has the advantages that the backflow port is connected with the first fine filter through the first pipeline on-off switch pipeline, the first fine filter is connected with the liquid storage tank through the flow measuring device pipeline, the liquid storage tank is connected with the second fine filter through the first liquid conveying device pipeline, the second fine filter is connected with the outflow port through the second pipeline on-off switch pipeline, the first pressure measuring device is arranged in the connecting pipeline between the first pipeline on-off switch and the first fine filter, the second pressure measuring device is arranged in the connecting pipeline between the second fine filter and the second pipeline on-off switch, the third fine filter is arranged in the connecting pipeline between the first fine filter and the flow measuring device, the first fine filter is a 10um filter, the third fine filter is a 5um filter, and the second fine filter is a 3um filter.
Drawings
FIG. 1 is a schematic diagram of a high clean filter and flow resistance testing apparatus according to an embodiment of the present utility model.
(symbol description)
1, a reflux port; 2 a first pipeline on-off switch; 3 a first fine filter; 4 a flow measuring device; 5 a liquid storage tank; 6 a first liquid delivery device; a second fine filter; 8 a second pipeline on-off switch; 9, a flow outlet; a first pressure measurement device; a second pressure measuring device; 12 a third fine filter; 13, poking the stock solution for standby; 14 a second liquid delivery device; 15 one-way valve; 16 air release ports; 17 a third pipeline on-off switch; 18, a liquid outlet; 19 a fourth pipeline on-off switch; 20 liquid level measuring device; 21 the workpiece to be cleaned.
Detailed Description
In order to make the technical contents of the present utility model more clearly understood, the following examples are specifically described.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Referring to fig. 1, in an embodiment of the present utility model, the high clean cleaning filtering and flow resistance testing apparatus of the present utility model includes a return port 1, a first pipeline on-off switch 2, a first fine filter 3, a flow measuring device 4, a liquid storage tank 5, a first liquid conveying device 6, a second fine filter 7, a second pipeline on-off switch 8, a outflow port 9, a first pressure measuring device 10, a second pressure measuring device 11 and a third fine filter 12, wherein:
the backflow port 1 is connected with the first fine filter 3 through a pipeline of the first pipeline on-off switch 2, the first fine filter 3 is connected with the liquid storage tank 5 through a pipeline of the flow measuring device 4, the liquid storage tank 5 is connected with the second fine filter 7 through a pipeline of the first liquid conveying device 6, the second fine filter 7 is connected with the outflow port 9 through a pipeline of the second pipeline on-off switch 8, the first pressure measuring device 10 is arranged in a connecting pipeline between the first pipeline on-off switch 2 and the first fine filter 3, the second pressure measuring device 11 is arranged in a connecting pipeline between the second fine filter 7 and the second pipeline on-off switch 8, the third fine filter 12 is arranged in a connecting pipeline between the first fine filter 3 and the flow measuring device 4, the first fine filter 3 is a 10um filter, the third fine filter 12 is a 5um filter, and the second fine filter 7 is a 3um filter.
The first fine filter 3, the third fine filter 12 and the second fine filter 7 may be any filter cartridge of suitable material, preferably a PP surface material filter cartridge, for example.
The first pipe on-off switch 2 and the second pipe on-off switch 8 may be any suitable pipe on-off switch, and in a specific embodiment of the present utility model, the first pipe on-off switch 2 and the second pipe on-off switch 8 are electromagnetic valves.
The reservoir 5 is used for storing a cleaning medium, which is a liquid, preferably ultrapure water, for example.
The flow measurement device 4 may be any suitable flow measurement device, and in one embodiment of the present utility model, the flow measurement device 4 is a flow sensor.
The first pressure measuring device 10 and the second pressure measuring device 11 may be any suitable pressure measuring device, and in a specific embodiment of the present utility model, the first pressure measuring device 10 and the second pressure measuring device 11 are pressure sensors.
The first liquid delivery device 6 may be any suitable liquid delivery device, and in a specific embodiment of the utility model the first liquid delivery device 6 is a circulation pump.
The high clean filter and flow resistance testing apparatus may further comprise any other suitable structure, and in an embodiment of the present utility model, the high clean filter and flow resistance testing apparatus further comprises a spare liquid storage tank 13 and a second liquid delivery device 14, wherein the spare liquid storage tank 13 is connected to the liquid storage tank 5 through a pipeline of the second liquid delivery device 14, as shown in fig. 1.
The second liquid delivery device 14 may be any suitable liquid delivery device, and in one embodiment of the present utility model, the second liquid delivery device 14 is a fill pump.
The reserve tank 13 is also used for storing a cleaning medium, which is a liquid, as is the tank 5, and which may be, for example, ultrapure water.
The high clean filter and flow resistance testing device may further comprise any other suitable structure, and in an embodiment of the present utility model, the high clean filter and flow resistance testing device further comprises a check valve 15, and the spare liquid storage tank 13 is connected to the second liquid conveying device 14 through a pipeline of the check valve 15, as shown in fig. 1.
The high clean filter and flow resistance testing device may further comprise any other suitable structure, and in an embodiment of the present utility model, the high clean filter and flow resistance testing device further comprises a deflation port 16 and a third pipeline on-off switch 17, and the liquid storage tank 5 is connected to the deflation port 16 through the third pipeline on-off switch 17.
The third on-off switch 17 may be any suitable on-off switch, and in one embodiment of the present utility model, the third on-off switch 17 is a solenoid valve.
The high clean filter and flow resistance testing apparatus may further comprise any other suitable structure, and in an embodiment of the present utility model, the high clean filter and flow resistance testing apparatus further comprises a drain 18 and a fourth on/off switch 19, and the liquid storage tank 5 is connected to the drain 18 through the fourth on/off switch 19.
The fourth on-off switch 19 may be any suitable on-off switch, and in one embodiment of the present utility model, the fourth on-off switch 19 is a solenoid valve.
The high clean filter and flow resistance testing apparatus may further comprise any other suitable structure, and in one embodiment of the present utility model, the high clean filter and flow resistance testing apparatus further comprises a liquid level measuring device 20, wherein the liquid level measuring device 20 is mounted on the liquid storage tank 5 for measuring the liquid level of the liquid storage tank 5, as shown in fig. 1.
The fluid level measuring device 20 may be any suitable fluid level measuring device, and in one embodiment of the present utility model, the fluid level measuring device 20 is a fluid level gauge, such as a digital fluid level gauge.
The use steps of the high-cleanliness cleaning filtering and flow resistance testing device are briefly described as follows:
(1) The workpiece 21 to be cleaned, such as a container or a pipeline, is respectively connected (through a quick joint, for example) with the reflux port 1 and the outflow port 9, the second liquid conveying device 14, the third pipeline on-off switch 17 and the fourth pipeline on-off switch 19 are closed, the first pipeline on-off switch 2 and the second pipeline on-off switch 8 are opened, the first liquid conveying device 6 is started, and cleaning is performed: the cleaning working medium sequentially flows through the first liquid conveying device 6, the second fine filter 7, the second pressure measuring device 11, the second pipeline on-off switch 8, the outflow port 9, the workpiece 21 to be cleaned, the backflow port 1, the first pipeline on-off switch 2, the first pressure measuring device 10, the first fine filter 3, the third fine filter 12 and the flow measuring device 4 from the liquid storage tank 5, and finally returns to the liquid storage tank 5, wherein the flowing direction of the liquid can be seen in the direction indicated by an arrow in fig. 1;
(2) In the cleaning process, the hydraulic change of the cleaning working medium before and after cleaning can be monitored in real time through the first pressure measuring device 10 and the second pressure measuring device 11, the reflux speed of the cleaning working medium is monitored through the flow measuring device 4, the internal resistance and the flow velocity of the workpiece 21 to be cleaned can be calculated according to the data acquired by the first pressure measuring device 10, the second pressure measuring device 11 and the flow measuring device 4, and a graph of the internal resistance and the flow velocity of the workpiece 21 to be cleaned is fitted.
Based on pressure data P acquired by the first pressure measuring device 10 and the second pressure measuring device 11, respectively 10 And P 11 Calculating the internal resistance of the workpiece 21 to be cleaned, the internal resistance Δp=p of the workpiece 21 to be cleaned 11 -P 10 。
The flow velocity in the workpiece 21 to be cleaned is calculated according to the flow data acquired by the flow measuring device 4 and the flow area of the workpiece 21 to be cleaned, and the formula is shown as follows: the formula is v=q/a, where: v-flow rate in the workpiece 21 to be cleaned; q-the flow rate collected by the flow rate measurement device 4; a-the flow area of the workpiece 21 to be cleaned.
A graph of the internal resistance Δp and the flow velocity V of the workpiece 21 to be cleaned is fitted by the axis line graph.
The internal resistance of the workpiece 21 to be cleaned under different flow rate working conditions can be known only by inquiring the graph.
If the cleaning working medium in the liquid storage tank 5 is to be supplemented, the first pipeline on-off switch 2, the second pipeline on-off switch 8, the fourth pipeline on-off switch 19 and the first liquid conveying device 6 are closed, the third pipeline on-off switch 17 is opened, the second liquid conveying device 14 is started, the cleaning working medium in the standby liquid storage tank 13 sequentially flows through the one-way valve 15 and the second liquid conveying device 14 to enter the liquid storage tank 5, and if the liquid storage tank 5 is provided with the liquid level measuring device 20, whether the cleaning working medium in the liquid storage tank 5 needs to be supplemented can be determined according to the liquid level measuring device 20.
If liquid is to be discharged, the first pipeline on-off switch 2, the second pipeline on-off switch 8, the first liquid conveying device 6 and the second liquid conveying device 14 are closed, the third pipeline on-off switch 17 and the fourth pipeline on-off switch 19 are opened, and the cleaning working medium flows through the fourth pipeline on-off switch 19 from the liquid storage tank 5 and is discharged from the liquid discharge port 18.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the utility model, the cleaning working medium in the cleaning loop needs to pass through the 2-level filter (the first fine filter 3 is a 10um filter, and the third fine filter 12 is a 5um filter) at the position of the return port, initially filters impurities, flows back to the liquid storage tank 5, and passes through the 1-level filter (the second fine filter 7 is a 3um filter) at the position of the outlet port 9 to the workpiece 21 to be cleaned, so that the internal cleanliness particulate matters of the workpiece 21 to be cleaned are ensured to be no more than 5um.
2. According to the utility model, the pressure detection devices are arranged at the positions of the reflux port 1 and the outflow port 9, the flow detection devices are arranged in the reflux pipeline, and the internal resistance of the cleaned workpiece can be calculated by collecting the pressure and flow data through the pressure detection devices and the flow detection devices.
Therefore, the utility model can rapidly and conveniently clean and filter the workpiece to be cleaned, has higher efficiency than the conventional filter device, realizes higher cleaning cleanliness which is 40um originally and is improved to 5um at present; the container or the pipeline with various external dimensions can be adapted only by being provided with corresponding interfaces; the specification and model of the fine filter can be changed according to the need, and the filter is applicable to filtration and clean cleaning with various precision requirements; the flow resistance testing device has the flow resistance testing function, and a pressure measuring device and a flow measuring device are added, so that the internal resistance of the cleaned workpiece can be calculated, and a flow resistance curve graph of the cleaned workpiece can be formed; the liquid supplementing function is achieved, equipment replacement and cleaning working medium supplement are facilitated, and the device is suitable for long-time work.
In conclusion, the high-cleanliness cleaning filtering and flow resistance testing equipment disclosed by the utility model can clean the workpiece, and the clean particulate matters in the cleaned workpiece are not more than 5 microns, and can also test the internal resistance of the workpiece, so that the high-cleanliness cleaning filtering and flow resistance testing equipment is ingenious in design, simple in structure, simple and convenient to manufacture, low in manufacturing cost and suitable for large-scale popularization and application.
In this specification, the utility model has been described with reference to specific embodiments thereof. It will be apparent, however, that various modifications and changes may be made without departing from the spirit and scope of the utility model. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (10)
1. The utility model provides a high clean washing filtration and flow resistance test equipment, includes backward flow mouth, first pipeline on-off switch, first fine filter, flow measuring device, liquid storage pot, first liquid conveyor, second fine filter, second pipeline on-off switch and outflow mouth, the backward flow mouth passes through first pipeline on-off switch piping connection first fine filter, first fine filter passes through flow measuring device piping connection liquid storage pot, the liquid storage pot passes through first liquid conveyor piping connection second fine filter, second fine filter passes through second pipeline on-off switch piping connection the outflow mouth, its characterized in that, high clean washing filtration and flow resistance test equipment still includes first pressure measuring device, second pressure measuring device and third fine filter, wherein:
the first pressure measuring device is arranged in a connecting pipeline between the first pipeline on-off switch and the first fine filter, the second pressure measuring device is arranged in the connecting pipeline between the second fine filter and the second pipeline on-off switch, the third fine filter is arranged in the connecting pipeline between the first fine filter and the flow measuring device, the first fine filter is a 10um filter, the third fine filter is a 5um filter, and the second fine filter is a 3um filter.
2. The high clean filter and flow resistance test apparatus of claim 1, wherein the first and second on-off switches are solenoid valves.
3. The high clean filter and flow resistance test apparatus of claim 1, wherein the flow measurement device is a flow sensor.
4. The high clean filter and flow resistance test apparatus of claim 1, wherein the first pressure measurement device and the second pressure measurement device are both pressure sensors.
5. The high clean filter and flow resistance test apparatus of claim 1, wherein the first liquid delivery device is a circulation pump.
6. The high clean filter and flow resistance test apparatus of claim 1, further comprising a reserve reservoir and a second liquid delivery device, the reserve reservoir being connected to the reservoir via the second liquid delivery device conduit.
7. The high clean filter and flow resistance testing apparatus of claim 6, wherein the second liquid delivery device is a fill pump.
8. The high clean filter and flow resistance test apparatus of claim 1, further comprising a bleed port and a third line on-off switch, the reservoir being connected to the bleed port by the third line on-off switch line.
9. The high clean filter and flow resistance test apparatus of claim 1, further comprising a drain port and a fourth line on-off switch, the liquid reservoir being connected to the drain port by the fourth line on-off switch line.
10. The high clean filter and flow resistance testing apparatus of claim 1, further comprising a liquid level measuring device mounted to the liquid reservoir for measuring the liquid level of the liquid reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322434067.3U CN220760433U (en) | 2023-09-07 | 2023-09-07 | High clean washs filtration and flow resistance test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322434067.3U CN220760433U (en) | 2023-09-07 | 2023-09-07 | High clean washs filtration and flow resistance test equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220760433U true CN220760433U (en) | 2024-04-12 |
Family
ID=90617875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322434067.3U Active CN220760433U (en) | 2023-09-07 | 2023-09-07 | High clean washs filtration and flow resistance test equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220760433U (en) |
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2023
- 2023-09-07 CN CN202322434067.3U patent/CN220760433U/en active Active
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