CN219121988U - Infusion filter detection device - Google Patents
Infusion filter detection device Download PDFInfo
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- CN219121988U CN219121988U CN202223044070.6U CN202223044070U CN219121988U CN 219121988 U CN219121988 U CN 219121988U CN 202223044070 U CN202223044070 U CN 202223044070U CN 219121988 U CN219121988 U CN 219121988U
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Abstract
The utility model discloses a transfusion filter detection device, which comprises: a main conveying air path; the air inlet of the second electromagnetic valve is connected with the output end of the main conveying air circuit; the first upper port and the second upper port are respectively arranged at the upper part of the second electromagnetic valve; the filter is provided with a first connecting port at one end and a second connecting port at the other end, and a third connecting port is arranged at the top of the filter; the first upper port is communicated with the first connecting port; a third solenoid valve and a fourth solenoid valve; a fifth electromagnetic valve; a differential pressure sensor; a sixth electromagnetic valve; a seventh electromagnetic valve; the infusion filter is detected through the mutual communication among the detection loop, the main conveying air path and the measurement loop. The utility model also provides a detection method of the infusion filter, which is used for switching detection modes by adjusting the communication positions of the second electromagnetic valve, the main conveying gas circuit and the measuring loop, so that the automatic detection of the infusion filter is realized, and the detection precision and efficiency are improved.
Description
Technical Field
The utility model relates to a detection device for an infusion filter, and belongs to the field of product detection.
Background
The existing medical infusion filter needs to be detected before delivery, and unqualified products in finished products are removed. The detection mainly comprises two steps, wherein the first step is to block the infusion tube on the right side of the filter, input fluid with certain pressure into the ventilation window on the top of the infusion tube, and detect whether the pressure drop of the ventilation membrane on the top meets the requirement; and the second step is to block the ventilation window, input fluid with certain pressure to the left infusion tube, and detect the tightness of the filter shell. The traditional detection method comprises a water injection detection method and a gas pressure detection method, but the water injection detection method needs to dry the filter after detection, and the process is complex and consumes energy. The air pressure detection method can complete detection only by manually clamping twice, and the air path is not closed in the whole detection process, so that the detection accuracy is easily influenced by external environmental factors.
Disclosure of Invention
The utility model designs and develops a detection device for an infusion filter, and the detection of the infusion filter is realized through the mutual communication between a detection loop and a main conveying air path as well as a measurement loop.
The technical scheme provided by the utility model is as follows:
an infusion filter testing device comprising:
a main conveying air path;
the air inlet of the second electromagnetic valve is connected with the output end of the main conveying air circuit;
the first upper port and the second upper port are respectively arranged at the upper part of the second electromagnetic valve;
the filter is provided with a first connecting port at one end and a second connecting port at the other end, and a third connecting port is arranged at the top of the filter; the first upper port is communicated with the first connecting port;
one end of the third electromagnetic valve and one end of the fourth electromagnetic valve are communicated with the second upper port, and the other end of the third electromagnetic valve and the other end of the fourth electromagnetic valve are respectively communicated with the second connecting port and the third connecting port;
one end of the fifth electromagnetic valve is communicated with the output end of the main conveying gas circuit;
one end of the differential pressure sensor is communicated with the other end of the fifth electromagnetic valve;
one end of the sixth electromagnetic valve is communicated with the other end of the differential pressure sensor, and the other end of the sixth electromagnetic valve is communicated with two exhaust ports of the second electromagnetic valve;
a seventh electromagnetic valve, one end of which is communicated with the other end of the sixth electromagnetic valve;
and a detection loop is formed among the second electromagnetic valve, the filter, the third electromagnetic valve and the fourth electromagnetic valve, and a measurement loop is formed among the fifth electromagnetic valve, the sixth electromagnetic valve, the differential pressure sensor and the seventh electromagnetic valve.
Preferably, the main conveying gas path includes:
a gas source;
one end of the pneumatic triple piece is communicated with the air source;
one end of the first electromagnetic valve is communicated with the other end of the pneumatic triple piece;
the air inlet of the air storage tank is communicated with the other end of the first electromagnetic valve, and the air outlet of the air storage tank is communicated with the second electromagnetic valve;
a first pressure sensor disposed between the pneumatic triplet and the first solenoid valve;
and the second pressure sensor is arranged at the air outlet of the air storage tank.
Preferably, the method further comprises:
and one end of the silencer is communicated with the other end of the seventh electromagnetic valve, and the other end of the silencer is communicated with the atmosphere.
Preferably, the second electromagnetic valve is a three-position five-way electromagnetic valve, and the middle position of the second electromagnetic valve is in a cut-off state.
Preferably, the fifth electromagnetic valve and the sixth electromagnetic valve are two-position two-way electromagnetic valves, and the normal positions of the fifth electromagnetic valve and the sixth electromagnetic valve are cut-off states.
Preferably, the third electromagnetic valve and the fourth electromagnetic valve are two-position two-way electromagnetic valves, the normal state of the third electromagnetic valve is a passage, and the normal state of the fourth electromagnetic valve is a cut-off state.
Preferably, the first electromagnetic valve is a two-position two-way electromagnetic valve, and the normal position is in a cut-off state.
The beneficial effects of the utility model are as follows: firstly, the detection device can complete two-step detection by only clamping the filter once, and compared with the existing detection method, the detection device can complete two-step detection by clamping the filter twice, and is simpler and higher in efficiency. Secondly, the gas path of the detection device is closed in the detection process, the accuracy is higher, the existing detection methods are all open, and the detection precision is easily influenced by external environments. Thirdly, the utility model also comprises a detection method of the infusion filter, which can automatically switch the detection modes to finish two-step detection and judge whether the filter is qualified, thereby improving the detection efficiency of the infusion filter and realizing the automation of the detection process of the infusion filter.
Drawings
FIG. 1 is a schematic diagram of the infusion filter testing device of the present utility model in an initial state.
FIG. 2 is a schematic diagram of a pneumatic circuit of the infusion filter testing device of the present utility model in an inflated state.
FIG. 3 is a schematic diagram of the pneumatic circuit of the infusion filter detection device in the utility model when detecting the pressure drop of the breathable film.
Fig. 4 is a pneumatic circuit diagram of the infusion filter detection device in the utility model when detecting the tightness of the shell.
Fig. 5 is a flowchart of the operation of the infusion filter detection device according to the present utility model.
Detailed Description
The present utility model is described in further detail below with reference to the drawings to enable those skilled in the art to practice the utility model by referring to the description.
As shown in fig. 1 to 5, the present utility model provides an infusion filter detection device, comprising: the main conveying gas circuit 1, the detection circuit 2, the measurement circuit 3, the gas source 4, the pneumatic triple piece 5, the first pressure sensor 6, the first electromagnetic valve 7, the gas storage tank 8, the second pressure sensor 9, the second electromagnetic valve 10, the filter 11, the third electromagnetic valve 12, the fourth electromagnetic valve 13, the differential pressure sensor 14, the fifth electromagnetic valve 15, the sixth electromagnetic valve 16, the seventh electromagnetic valve 17 and the silencer 18.
Infusion filter detection device includes the main gas circuit 1 that carries, detection circuit 2 and measurement circuit 3 that communicate each other, and main gas circuit 1 that carries includes: the air source 4, pneumatic triple piece 5, first pressure sensor 6, first solenoid valve 7, gas holder 8, pressure sensor 9, the one end of air source 4 is linked together with the one end of pneumatic triple piece 5, the other end of pneumatic triple piece 5 is linked together with the one end of first solenoid valve 7, still communicate first pressure sensor 6 on the communicating pipe way between pneumatic triple piece 5 and the first solenoid valve 7, the other end of first solenoid valve 7 is linked together with the air inlet of gas holder 8, the gas outlet department of gas holder 8 is provided with second pressure sensor 9, and whether it is required to inflate to judge the gas holder through the atmospheric pressure on the main gas circuit 1 of carrying of second pressure sensor 9 detection.
The detection circuit 2 supplies air through the air storage tank 8, guarantees that the atmospheric pressure of detection circuit 2 is invariable, and detection circuit 2 includes: the two ends of the filter 11 are respectively provided with a first connecting port c and a second connecting port a, the top of the filter 11 is provided with a third connecting port b, the upper part of the second electromagnetic valve 10 is provided with a first upper port and a second upper port, the lower part of the second electromagnetic valve 10 is provided with two exhaust ports, the first upper port of the second electromagnetic valve 10 is communicated with the first connecting port c, the second upper port of the second electromagnetic valve 11 is communicated with one end of the third electromagnetic valve 12 and one end of the fourth electromagnetic valve 13 are respectively communicated with the second connecting port a and the third connecting port b, and the second electromagnetic valve 10, the third electromagnetic valve 12 and the fourth electromagnetic valve 13 simultaneously act to realize the switching of a loop, so that gas flows from the third connecting port b of the filter 11 to the first connecting port c of the filter 11 to the second connecting port a.
The measurement loop 3 comprises a differential pressure sensor 14, a fifth electromagnetic valve 15, a sixth electromagnetic valve 16, a seventh electromagnetic valve 17 and a silencer 18, wherein one end of the fifth electromagnetic valve 15 is communicated with the main conveying gas path 1, the other end of the fifth electromagnetic valve is connected with one end of the differential pressure sensor 14, one end of the differential pressure sensor 14 is connected with one end of the sixth electromagnetic valve 16, one end of the sixth electromagnetic valve 16 is communicated with two exhaust ports of the second electromagnetic valve, one end of the seventh electromagnetic valve 17 is communicated with the other end of the sixth electromagnetic valve 16, and the other end of the seventh electromagnetic valve 17 is communicated with the atmosphere through the silencer 18.
In the utility model, as one preferable mode, the first electromagnetic valve 7 is a two-position two-way electromagnetic valve, and the normal state is a cut-off state, so that the air source 4 can be controlled to charge air into the air storage tank 8; the second electromagnetic valve 10 is a three-position five-way electromagnetic valve, and when the second electromagnetic valve 10 is positioned at the middle position, the whole detection loop is cut off; the third electromagnetic valve 12 and the fourth electromagnetic valve 13 are two-position two-way electromagnetic valves, wherein the normal state of the third electromagnetic valve 12 is a passage, and the normal state of the fourth electromagnetic valve 13 is a cut-off state; the fifth electromagnetic valve 15 and the sixth electromagnetic valve 16 are two-position two-way electromagnetic valves, and the normal positions are all in a cut-off state.
When the pressure of the air storage tank 8 is insufficient, the current work is suspended, all the electromagnetic valves return to the normal state, the first electromagnetic valve 7 is electrified to supplement air for the air storage tank, and after the air supplement is completed, all the electromagnetic valves return to the work condition mechanical detection work before suspension.
In the detection, the infusion filter detection device is used, and the infusion filter detection device comprises:
3-5, the main conveying gas circuit, the detection circuit and the measurement circuit are communicated with each other, the main conveying gas circuit is started, when the pressure in the second pressure sensor reaches the standard, the first electromagnetic valve is powered off, the right position of the second electromagnetic valve is powered on, the fifth electromagnetic valve, the sixth electromagnetic valve and the seventh electromagnetic valve are powered on, when the pressure difference in the pressure difference sensor meets the requirement, the pressure drop performance of the breathable film is qualified, and the pressure drop detection of the breathable film is completed;
the fifth electromagnetic valve, the sixth electromagnetic valve and the seventh electromagnetic valve are powered off, the right position of the second electromagnetic valve is powered off, the third electromagnetic valve and the fourth electromagnetic valve are powered on, the left position of the second electromagnetic valve is powered on, the fifth electromagnetic valve and the sixth electromagnetic valve are powered on, when the pressure difference in the pressure difference sensor is zero, the sealing performance of the shell is qualified, and the detection of the sealing performance of the shell is completed.
When both the first step and the second step are acceptable, the filter can be judged to be acceptable. And when the detection result of the first step is unqualified, judging that the filter is unqualified, stopping the blanking after the detection of the current filter, and then starting the detection of the next filter. The whole detection process is automatically switched by the device, and finally whether the filter is qualified or not is judged, and manual intervention is not needed.
Although embodiments of the present utility model have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the utility model would be readily apparent to those skilled in the art, and accordingly, the utility model is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (7)
1. An infusion filter testing device, comprising:
a main conveying air path;
the air inlet of the second electromagnetic valve is connected with the output end of the main conveying air circuit;
the first upper port and the second upper port are respectively arranged at the upper part of the second electromagnetic valve;
the filter is provided with a first connecting port at one end and a second connecting port at the other end, and a third connecting port is arranged at the top of the filter; the first upper port is communicated with the first connecting port;
one end of the third electromagnetic valve and one end of the fourth electromagnetic valve are communicated with the second upper port, and the other end of the third electromagnetic valve and the other end of the fourth electromagnetic valve are respectively communicated with the second connecting port and the third connecting port;
one end of the fifth electromagnetic valve is communicated with the output end of the main conveying gas circuit;
one end of the differential pressure sensor is communicated with the other end of the fifth electromagnetic valve;
one end of the sixth electromagnetic valve is communicated with the other end of the differential pressure sensor, and the other end of the sixth electromagnetic valve is communicated with two exhaust ports of the second electromagnetic valve;
a seventh electromagnetic valve, one end of which is communicated with the other end of the sixth electromagnetic valve;
and a detection loop is formed among the second electromagnetic valve, the filter, the third electromagnetic valve and the fourth electromagnetic valve, and a measurement loop is formed among the fifth electromagnetic valve, the sixth electromagnetic valve, the differential pressure sensor and the seventh electromagnetic valve.
2. The infusion filter testing device of claim 1, wherein the main delivery circuit comprises:
a gas source;
one end of the pneumatic triple piece is communicated with the air source;
one end of the first electromagnetic valve is communicated with the other end of the pneumatic triple piece;
the air inlet of the air storage tank is communicated with the other end of the first electromagnetic valve, and the air outlet of the air storage tank is communicated with the second electromagnetic valve;
a first pressure sensor disposed between the pneumatic triplet and the first solenoid valve;
and the second pressure sensor is arranged at the air outlet of the air storage tank.
3. The infusion filter testing device of claim 2, further comprising:
and one end of the silencer is communicated with the other end of the seventh electromagnetic valve, and the other end of the silencer is communicated with the atmosphere.
4. The infusion filter detection device according to claim 3, wherein the second electromagnetic valve is a three-position five-way electromagnetic valve, and the second electromagnetic valve is in a cut-off state.
5. The infusion filter testing device of claim 4, wherein the fifth solenoid valve and the sixth solenoid valve are two-position two-way solenoid valves, and wherein the normal positions of the fifth solenoid valve and the sixth solenoid valve are both in a closed state.
6. The infusion filter testing device of claim 5, wherein the third solenoid valve and the fourth solenoid valve are two-position two-way solenoid valves, wherein the normal position of the third solenoid valve is a passage, and wherein the normal position of the fourth solenoid valve is a cut-off state.
7. The infusion filter testing device of claim 6, wherein the first solenoid valve is a two-position two-way solenoid valve and the normal position is a closed state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223044070.6U CN219121988U (en) | 2022-11-16 | 2022-11-16 | Infusion filter detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223044070.6U CN219121988U (en) | 2022-11-16 | 2022-11-16 | Infusion filter detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219121988U true CN219121988U (en) | 2023-06-02 |
Family
ID=86524181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223044070.6U Active CN219121988U (en) | 2022-11-16 | 2022-11-16 | Infusion filter detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219121988U (en) |
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2022
- 2022-11-16 CN CN202223044070.6U patent/CN219121988U/en active Active
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