CN212662376U - Liquid automatic supply stop device - Google Patents
Liquid automatic supply stop device Download PDFInfo
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- CN212662376U CN212662376U CN202020693715.0U CN202020693715U CN212662376U CN 212662376 U CN212662376 U CN 212662376U CN 202020693715 U CN202020693715 U CN 202020693715U CN 212662376 U CN212662376 U CN 212662376U
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Abstract
The utility model discloses an automatic liquid supply stop device includes pressure balance pipe, transfer line and confined liquid storage pot, the top of transfer line and pressure balance pipe's top extend to in the liquid storage pot respectively, the top of pressure balance pipe is higher than the top of transfer line, the bottom of pressure balance pipe and the bottom of transfer line extend to in the target container respectively. During infusion, the height difference is not required, and automatic supply and automatic stop can be realized. The utility model discloses be applied to the infusion equipment field.
Description
Technical Field
The utility model relates to a transfusion equipment field, concretely relates to liquid automatic supply stop device.
Background
As shown in FIG. 1, the reservoir 1 of the IV set now contains the desired fluid, and the remaining volume of the reservoir 1 is filled with air. The lower end of the liquid storage tank 1 is inserted by two pipes, one of which is an air pressure pipe 11, one end of the air pressure pipe 11 is connected with the outside atmosphere, and the other end is connected with the liquid storage tank 1; the other is a liquid conveying pipe 2 used for filling liquid into a target container 4. An adjusting valve 21 is provided in the middle of the infusion tube 2 for adjusting the delivery rate.
The technical scheme has the following defects:
1. because a certain height difference H is required between the liquid storage tank 1 and the target container 4, when the air pressure of the target container 4 is increased, the height difference H must be correspondingly increased (for example, when the air pressure is used for intravenous injection in hospitals, the height difference is more than 80 cm), and the household has no corresponding device for providing the height difference, so that the device is only suitable for being applied to scenes with small pressure difference.
2. Due to the height difference H, the liquid is conveyed from the bottom end of the infusion tube 2 to the target container 4, and when the liquid level in the target container 4 exceeds the bottom end of the infusion tube 2, the liquid level in the target container 4 can still continuously rise due to the principle of a communicating vessel until the liquid overflows from the target container 4, so that the function of stopping the liquid cannot be achieved.
The patent document with the application number of CN103800972A discloses an automatic stopping dropping funnel of a disposable venous transfusion device, which particularly utilizes the principles of gravity, buoyancy and negative pressure to lead a sealing floater in the dropping funnel to float upwards along with the rising of the liquid level of medicine in the dropping funnel in the transfusion process, and the opening of a transfusion tube opening; when the liquid medicine surface of the liquid medicine is lowered after the transfusion is finished or the liquid medicine is replaced in a midway bottle, the sealing floater is lowered along with the liquid medicine, the latex sealing membrane seals the liquid outlet of the dropping funnel in time to prevent the liquid medicine surface from falling, and the phenomena of air entering and backflow blood return are prevented.
The above-mentioned patent documents still have the technical problems that the transfusion is carried out when the float floats upwards and the float descends to seal the liquid outlet by utilizing the principles of gravity, buoyancy and negative pressure.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a liquid automatic supply stop device, during the infusion, do not have the requirement to the difference in height, can automatic supply, automatic stop.
In order to achieve the above object, the utility model provides an automatic liquid supply stop device, including pressure balance pipe, transfer line and confined liquid storage pot, the top of transfer line and pressure balance pipe's top extend to in the liquid storage pot respectively, pressure balance pipe's top is higher than the top of transfer line, pressure balance pipe's bottom and transfer line's bottom extend to in the target container respectively.
In a further improvement, the bottom end of the pressure balance tube is higher than the bottom end of the infusion tube. In the case of sufficient liquid in the liquid storage tank, the liquid level in the target container is not higher than the bottom end of the pressure balancing pipe, so that the liquid in the target container is probably less, and the bottom end of the liquid conveying pipe extends into the liquid in the target container.
In a further improvement, the bottom end of the pressure balancing pipe is lower than the bottom end of the infusion pipe, so that a certain amount of liquid can be always stored in the target container, and the bottom end of the infusion pipe cannot extend into the liquid in the target container.
In a further improvement, the top end of the pressure balance pipe is higher than the liquid level of the liquid in the liquid storage tank, and the top end of the pressure balance pipe extends to the upper part in the liquid storage tank, so that the liquid stored in the liquid storage tank can be maximized; the top of transfer line extends to the bottom in the liquid storage tank, can make in the liquid storage tank all input target container as far as possible, ensures that liquid consumption in the liquid storage tank is thorough, avoids extravagant.
In a further improvement, the connection parts among the infusion tube, the pressure balance tube and the liquid storage tank are respectively sealed, specifically, the bottom end of the liquid storage tank is provided with an opening, a rubber plug is arranged at the opening, and the infusion tube and the pressure balance tube are inserted into the rubber plug; or sealing rings are arranged among the infusion tube, the pressure balance tube and the bottom end of the liquid storage tank to realize the sealing effect. Seals are arranged among the infusion tube, the pressure balance tube and the liquid storage tank, so that the failure of the water replenishing stop function caused by air leakage can be avoided; secondly, can avoid the liquid drippage in the liquid storage tank to pollute the surrounding environment.
The utility model also discloses a supply of adopting foretell liquid automatic supply to end device is by the method, its technical scheme who adopts as follows:
a supply stopping method adopting the automatic liquid supply stopping device comprises the following steps:
s1, filling the liquid storage tank with liquid;
s2, placing the liquid storage tank above the target container, and extending the bottom end of the pressure balance tube and the bottom end of the infusion tube into the target container;
s3, conveying the liquid in the liquid storage tank into a target container through a liquid conveying pipe;
s4, when the liquid level of the liquid in the target container is not over the bottom end of the pressure balance pipe, the liquid conveying pipe stops conveying the liquid to the target container; when the liquid in the target container is consumed and the liquid level of the liquid in the target container is lower than the bottom end of the pressure balancing pipe, the liquid conveying pipe conveys the liquid into the target container again;
and S5, repeating the step S4 until all the liquid in the liquid storage tank is conveyed into the target container.
Compared with the prior art, the utility model discloses technical scheme's beneficial effect:
the utility model discloses an automatic liquid supply is by device, before the infusion, and the storage has an amount of liquid in the liquid storage pot, and the liquid level of liquid in the liquid storage pot is over the top of transfer line and can not lack the top of pressure balance pipe. During infusion, liquid in the liquid storage tank is conveyed into the target container from the infusion tube, the liquid level in the target container begins to rise along with the increase of the liquid in the target container, when the liquid level of the liquid in the target container is over the bottom end of the infusion tube, the pressure balancing tube is communicated with the liquid storage tank and the target container due to the existence of the pressure balancing tube, and the pressure balancing tube can balance air pressure between the liquid storage tank and the target container. The liquid in the liquid storage tank can be continuously conveyed into the target container through the liquid conveying pipe. When the liquid level of liquid does not exceed the bottom of pressure balance pipe in the target container, the bottom of pressure balance pipe is blocked, and when liquid in the liquid storage tank continues to input the target container, atmospheric pressure in the liquid storage tank can reduce to atmospheric pressure in making the target container is greater than the atmospheric pressure in the liquid storage tank, thereby in making the liquid in the liquid storage tank can not continue to input the target container, realized automatic ending.
When the liquid in the target container is consumed and the liquid level of the liquid in the target container is lower than the bottom end of the pressure balance pipe, the pressure balance pipe communicates the liquid storage tank with the target container again, so that the air pressure between the liquid storage tank and the target container is equal, and the liquid in the liquid storage tank is input into the target container through the liquid conveying pipe again under the action of gravity, so that automatic replenishment is realized.
The utility model discloses a need not consider the problem of difference in height between liquid storage pot and the target container, only need with the target container place the below of liquid storage pot can.
To sum up, the utility model discloses an automatic liquid supply is when ending device infuses, does not have the requirement to the difference in height, can automatic supply, automatic end.
The utility model discloses a supply of adopting foretell liquid automatic supply to stop device stops the method and also has above-mentioned advantage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic view of a prior art intravenous infusion set;
fig. 2 is a schematic structural view of the automatic liquid replenishment stopping device.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators in the embodiments of the present invention, such as upper, lower, left, right, front and rear … …, are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indicator is changed accordingly.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 2, the automatic liquid supply stopping device includes a pressure balance tube 3, a liquid transport tube 2 and a closed liquid storage tank 1, wherein the top end of the liquid transport tube 2 and the top end of the pressure balance tube 3 extend into the liquid storage tank 1 respectively, the top end of the pressure balance tube 3 is higher than the top end of the liquid transport tube 2, and the bottom end of the pressure balance tube 3 and the bottom end of the liquid transport tube 2 extend into a target container 4 respectively.
In the automatic liquid supply stopping device of the embodiment, before infusion, a certain amount of liquid is stored in the liquid storage tank 1, and the liquid level of the liquid in the liquid storage tank 1 is over the top end of the infusion tube 2 and cannot be over the top end of the pressure balance tube 3. During transfusion, liquid in the liquid storage tank 1 is conveyed into the target container 4 from the liquid conveying pipe 2, the liquid level in the target container 4 begins to rise along with the increase of the liquid in the target container 4, when the liquid level of the liquid in the target container 4 is over the bottom end of the liquid conveying pipe 2, the pressure balancing pipe 3 is communicated with the liquid storage tank 1 and the target container 4 due to the existence of the pressure balancing pipe 3, and the pressure balancing pipe 3 can balance air pressure between the liquid storage tank 1 and the target container 4. The liquid in the liquid storage tank 1 can be continuously conveyed into the target container 4 through the liquid conveying pipe 2. When the liquid level of the liquid in the target container 4 is lower than the bottom end of the pressure balance tube 3, the bottom end of the pressure balance tube 3 is blocked, and when the liquid in the liquid storage tank 1 is continuously input into the target container 4, the air pressure in the liquid storage tank 1 is reduced, so that the air pressure in the target container 4 is greater than the air pressure in the liquid storage tank 1, the liquid in the liquid storage tank 1 cannot be continuously input into the target container 4, and automatic cut-off is realized.
When the liquid in the target container 4 is consumed and the liquid level of the liquid in the target container 4 is lower than the bottom end of the pressure balance pipe 3, the pressure balance pipe 3 communicates the liquid storage tank 1 with the target container 4 again to ensure that the air pressure between the liquid storage tank 1 and the target container 4 is equal, and the liquid in the liquid storage tank 1 is input into the target container 4 again through the infusion pipe 2 under the action of gravity, so that automatic replenishment is realized.
The height difference between the liquid storage tank 1 and the target container 4 of the embodiment does not need to be considered, and the target container 4 is only required to be placed below the liquid storage tank 1.
As described above, the automatic liquid supply/shutoff device of the present embodiment can automatically supply and automatically shut off the liquid when the liquid is delivered, without requiring a height difference.
In the present embodiment, as a further improvement of the above technical solution, the bottom end of the pressure balance tube 3 is higher than the bottom end of the infusion tube 2. In the case where the liquid in the liquid storage tank 1 is sufficient, the liquid level in the target container 4 is not higher than the bottom end of the pressure equalizing pipe 3 at all times, and therefore, the liquid in the target container 4 may be less, and the bottom end of the liquid transfer pipe 2 may protrude into the liquid in the target container 4.
In this embodiment, as a further improvement of the above technical solution, the bottom end of the pressure balance tube 3 is lower than the bottom end of the infusion tube 2, so that a certain amount of liquid can be always stored in the target container 4, and the bottom end of the infusion tube 2 does not extend into the liquid in the target container 4.
In the embodiment, as a further improvement of the above technical solution, since the top end of the pressure balance tube 3 is higher than the liquid level of the liquid in the liquid storage tank 1, and the top end of the pressure balance tube 3 extends to the upper part of the liquid storage tank 1, the liquid stored in the liquid storage tank 1 can be maximized; the top end of the infusion tube 2 extends to the bottom in the liquid storage tank 1, so that the liquid in the liquid storage tank 1 can be completely input into the target container 4 as much as possible, the liquid in the liquid storage tank 1 is ensured to be completely consumed, and the waste is avoided.
In this embodiment, as a further improvement of the above technical solution, the connection positions between the infusion tube 2, the pressure balance tube 3 and the liquid storage tank 1 are respectively sealed, specifically, an opening is formed at the bottom end of the liquid storage tank 1, a rubber plug is arranged at the opening, and the infusion tube 2 and the pressure balance tube 3 are inserted into the rubber plug; or sealing rings are arranged among the infusion tube 2, the pressure balance tube 3 and the bottom end of the liquid storage tank 1 to realize the sealing effect. Seals are arranged among the infusion tube 2, the pressure balance tube 3 and the liquid storage tank 1, so that the failure of the water replenishing stop function caused by air leakage can be avoided; secondly, the liquid in the liquid storage tank 1 can be prevented from dripping to pollute the surrounding environment.
The embodiment also discloses a replenishment stopping method adopting the automatic liquid replenishment stopping device, which adopts the following technical scheme:
a supply stopping method adopting the automatic liquid supply stopping device comprises the following steps:
s1, filling the liquid storage tank 1 with liquid;
s2, placing the liquid storage tank 1 above the target container 4, and extending the bottom end of the pressure balance tube 3 and the bottom end of the infusion tube 2 into the target container 4;
s3, conveying the liquid in the liquid storage tank 1 to a target container 4 through the liquid conveying pipe 2;
s4, when the liquid level of the liquid in the target container 4 is not over the bottom end of the pressure balance tube 3, at this time, the gas space in the liquid storage tank 1 and the gas space in the target container 4 are separated, when the liquid infusion tube 2 continues to deliver a little liquid, the liquid infusion tube 2 stops delivering the liquid to the target container 4; when the liquid in the target container 4 is consumed and the liquid level of the liquid in the target container 4 is lower than the bottom end of the pressure balance pipe 3, at the moment, the air pressure in the target container 4 and the liquid storage tank 1 is communicated again through the pressure balance pipe 3, no pressure difference exists between the target container 4 and the liquid storage tank 1, and the liquid in the liquid storage tank 1 is under the self gravity, and the liquid infusion pipe 2 conveys the liquid into the target container 4 again;
s5, repeating the step S4 until all the liquid in the liquid storage tank 1 is delivered to the target container 4.
The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.
Claims (5)
1. The automatic liquid supply stopping device is characterized by comprising a liquid conveying pipe, a pressure balancing pipe and a closed liquid storage tank, wherein the top end of the liquid conveying pipe and the top end of the pressure balancing pipe extend into the liquid storage tank respectively, the top end of the pressure balancing pipe is higher than the top end of the liquid conveying pipe, and the bottom end of the pressure balancing pipe and the bottom end of the liquid conveying pipe extend into a target container respectively.
2. The automatic liquid supply shutoff device according to claim 1, wherein a bottom end of said pressure equalizing tube is higher than a bottom end of said liquid supply tube.
3. The automatic liquid supply shutoff device of claim 1 wherein the bottom end of said pressure equalization tube is below the bottom end of the infusion tube.
4. The automatic liquid supply shutoff device according to claim 1, wherein a top end of said pressure equalizing tube extends to an upper portion of said liquid storage tank, and a top end of said liquid transport tube extends to a bottom portion of said liquid storage tank.
5. The automatic liquid supply shutoff device of claim 1 wherein the connections between the fluid line, the pressure equalization tube and the fluid reservoir are sealed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020201415402 | 2020-01-21 | ||
| CN202020141540 | 2020-01-21 |
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| CN212662376U true CN212662376U (en) | 2021-03-09 |
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| CN202020693715.0U Active CN212662376U (en) | 2020-01-21 | 2020-04-29 | Liquid automatic supply stop device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111450348A (en) * | 2020-01-21 | 2020-07-28 | 湖南明康中锦医疗科技发展有限公司 | Liquid automatic supply stopping device and method |
| CN112342598A (en) * | 2020-11-02 | 2021-02-09 | 常德市联嘉机械有限公司 | Convenient-to-use rotary electroplating device with positioning structure |
-
2020
- 2020-04-29 CN CN202020693715.0U patent/CN212662376U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111450348A (en) * | 2020-01-21 | 2020-07-28 | 湖南明康中锦医疗科技发展有限公司 | Liquid automatic supply stopping device and method |
| CN112342598A (en) * | 2020-11-02 | 2021-02-09 | 常德市联嘉机械有限公司 | Convenient-to-use rotary electroplating device with positioning structure |
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Address after: 410205 Room 101, 1st floor, north of superstar entrepreneurship base, No. 8 Lujing Road, high tech Development Zone, Changsha, Hunan Patentee after: Hunan Mingkang Zhongjin Medical Technology Co.,Ltd. Address before: 101, North 1st floor, superstar entrepreneurial base, No.8 Lujing Road, high tech Development Zone, Changsha City, Hunan Province, 410205 Patentee before: HUNAN MICOME ZHONGJIN MEDICAL SCIENCE & TECHNOLOGY DEVELOPMENT Co.,Ltd. |