CN211398658U - Liquid flow direction switching device - Google Patents
Liquid flow direction switching device Download PDFInfo
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- CN211398658U CN211398658U CN201921966011.XU CN201921966011U CN211398658U CN 211398658 U CN211398658 U CN 211398658U CN 201921966011 U CN201921966011 U CN 201921966011U CN 211398658 U CN211398658 U CN 211398658U
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Abstract
The utility model relates to a liquid flow direction switching device, which comprises a switching cavity, a switching piston and a sealing ring; the switching piston is arranged in the switching cavity, and the upper part and the lower part of the switching piston are respectively provided with two sealing rings; the switching cavity comprises a main body, a first liquid inlet channel, a second liquid inlet channel and a liquid outlet channel; the first liquid inlet channel and the second liquid inlet channel are arranged on one side of the main body and are arranged in parallel, and a preset distance is reserved between the first liquid inlet channel and the second liquid inlet channel; the other side of the main body is provided with the liquid outlet channel, and the liquid outlet channel is positioned between the first liquid inlet channel and the second liquid inlet channel. The utility model discloses it is convenient to use, simple structure.
Description
Technical Field
The utility model relates to a medical instrument, in particular to a liquid flow direction switching device.
Background
At present, in the medical field, liquid flow direction switching parts are often needed to switch different liquids, but most of the switching parts adopt a reversing valve structure, so that the use is inconvenient, and the structure is relatively complex.
Disclosure of Invention
In view of the above, the present invention is to provide a liquid flow direction switching device, which is convenient and simple in structure.
In order to achieve the purpose, the utility model adopts the following technical proposal: a liquid flow direction switching device comprises a switching cavity, a switching piston and a sealing ring; the switching piston is arranged in the switching cavity, and the upper part and the lower part of the switching piston are respectively provided with two sealing rings; the switching cavity comprises a main body, a first liquid inlet channel, a second liquid inlet channel and a liquid outlet channel; the first liquid inlet channel and the second liquid inlet channel are arranged on one side of the main body and are arranged in parallel, and a preset distance is reserved between the first liquid inlet channel and the second liquid inlet channel; the other side of the main body is provided with the liquid outlet channel, and the liquid outlet channel is positioned between the first liquid inlet channel and the second liquid inlet channel.
Further, the bottom of the main body is provided with a mounting groove.
Further, the switching piston comprises a piston body and a switching key; the piston body is fixedly provided with the switching key, and the middle part of the piston body is provided with a passage; the piston body above the passage is provided with two sealing rings, and the piston body below the passage is provided with two sealing rings.
Further, the switch key with the mounting groove matches the setting, the switch key is located switch cavity body outside.
Further, the length of the passage is greater than half of the distance between the first liquid inlet channel and the second liquid inlet channel, and is less than or equal to the sum of the distance between the first liquid inlet channel and the second liquid inlet channel and the width of the liquid inlet pipeline.
The utility model discloses owing to take above technical scheme, it has following advantage: the utility model discloses a set up in switching the cavity and switch the piston to realize that the liquid flow direction switches by the sealing washer with switching the piston cooperation, it is convenient to use, simple structure.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural view of the first liquid inlet channel of the present invention when communicating with the liquid outlet channel;
fig. 3 is a schematic structural view of the second liquid inlet channel of the present invention when communicating with the liquid outlet channel.
Detailed Description
In the description of the present invention, it should be understood that the terms "upper", "lower", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the utility model provides a liquid flow direction auto-change over device, it is including switching cavity 1, switching piston 2 and sealing washer 3. A switching piston 2 is arranged in the switching cavity 1, and two sealing rings 3 are respectively arranged at the upper part and the lower part of the switching piston 2.
In the above embodiment, the switching chamber 1 includes a main body 11, a first inlet channel 12, a second inlet channel 13, and an outlet channel 14. A first liquid inlet channel 12 and a second liquid inlet channel 13 are arranged on one side of the main body 11, the first liquid inlet channel 12 and the second liquid inlet channel 13 are arranged in parallel, and a preset distance is reserved between the first liquid inlet channel 12 and the second liquid inlet channel 13; the other side of the main body 11 is provided with a liquid outlet channel 14, and the liquid outlet channel 14 is positioned between the first liquid inlet channel 12 and the second liquid inlet channel 13.
Wherein, a mounting groove 15 is arranged at the bottom of the main body 11 for matching with the switching piston 2.
In the above embodiments, the switching piston 2 includes the piston body 21 and the switching key 22. A switch key 22 is fixedly arranged on the piston body 21, and a passage 23 is arranged in the middle of the piston body 21; the switch key 22 is matched with the mounting groove 15 and is positioned outside the main body 11 in the switch cavity 1. Two seal rings 3 are provided on the piston body 21 above the passage 23, and two seal rings 3 are provided on the piston body 21 below the passage 23.
The length of the passage 23 is greater than half of the distance between the first liquid inlet channel 12 and the second liquid inlet channel 13, and is less than or equal to the sum of the distance between the first liquid inlet channel 12 and the second liquid inlet channel 13 and the width of the liquid inlet pipeline.
To sum up, the utility model discloses during the use, as shown in fig. 2, when first inlet channel 12 of needs and play liquid channel 14 intercommunication, drive piston body 21 rebound through switch key 22, make route 23 and first inlet channel 12, play liquid channel 14 intercommunication, at this moment, the export of second inlet channel 12 corresponds with piston body 21's lower part, the liquid that gets into second inlet channel 12 is sealed in the main part 11 lower part of switching cavity 1 by two sealing washer 3 that set up in the route 23 below of piston body 21, and can not get into by route 23, in the liquid channel that first inlet channel 12 and play liquid channel 14 formed. As shown in fig. 3, when the second liquid inlet channel 13 needs to be communicated with the liquid outlet channel 14, the switch key 22 drives the piston body 21 to move downward, so that the passage 23 is communicated with the second liquid inlet channel 13 and the liquid outlet channel 14, and the principle is the same as that when the first liquid inlet channel 12 is communicated with the liquid outlet channel 14.
Above-mentioned each embodiment only is used for explaining the utility model discloses, the structure, size, the setting position and the shape of each part all can change to some extent on the basis of the technical scheme of the utility model discloses on the basis of technical scheme, all according to the utility model discloses the principle is to the improvement and the equivalence transform that individual part goes on, all should not exclude the utility model discloses a protection scope is outside.
Claims (5)
1. A liquid flow direction switching device, comprising: comprises a switching cavity, a switching piston and a sealing ring; the switching piston is arranged in the switching cavity, and the upper part and the lower part of the switching piston are respectively provided with two sealing rings;
the switching cavity comprises a main body, a first liquid inlet channel, a second liquid inlet channel and a liquid outlet channel; the first liquid inlet channel and the second liquid inlet channel are arranged on one side of the main body and are arranged in parallel, and a preset distance is reserved between the first liquid inlet channel and the second liquid inlet channel; the other side of the main body is provided with the liquid outlet channel, and the liquid outlet channel is positioned between the first liquid inlet channel and the second liquid inlet channel.
2. The switching device of claim 1, wherein: the bottom of the main body is provided with a mounting groove.
3. The switching device of claim 2, wherein: the switching piston comprises a piston body and a switching key; the piston body is fixedly provided with the switching key, and the middle part of the piston body is provided with a passage; the piston body above the passage is provided with two sealing rings, and the piston body below the passage is provided with two sealing rings.
4. The switching device of claim 3, wherein: the switching key is matched with the mounting groove, and the switching key is positioned outside the main body in the switching cavity.
5. The switching device according to claim 3 or 4, wherein: the length of the passage is greater than half of the distance between the first liquid inlet channel and the second liquid inlet channel, and is less than or equal to the sum of the distance between the first liquid inlet channel and the second liquid inlet channel and the width of the liquid inlet pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921966011.XU CN211398658U (en) | 2019-11-14 | 2019-11-14 | Liquid flow direction switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921966011.XU CN211398658U (en) | 2019-11-14 | 2019-11-14 | Liquid flow direction switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211398658U true CN211398658U (en) | 2020-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921966011.XU Active CN211398658U (en) | 2019-11-14 | 2019-11-14 | Liquid flow direction switching device |
Country Status (1)
| Country | Link |
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| CN (1) | CN211398658U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113318290A (en) * | 2021-06-30 | 2021-08-31 | 中国人民解放军陆军特色医学中心 | Clinical enema device convenient to it is clean |
-
2019
- 2019-11-14 CN CN201921966011.XU patent/CN211398658U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113318290A (en) * | 2021-06-30 | 2021-08-31 | 中国人民解放军陆军特色医学中心 | Clinical enema device convenient to it is clean |
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Effective date of registration: 20201030 Address after: 266000 No. 187-1, Zhuzhou Road, Laoshan District, Shandong, Qingdao Patentee after: QINGDAO KIWI INTELLIGENT TECHNOLOGY Co.,Ltd. Address before: 266000 room 306, Zhuzhou Road, Laoshan District, Qingdao, Shandong, 306 Patentee before: QINGDAO SAIBOWEI TECHNOLOGY DEVELOPMENT Co.,Ltd. |