Multifunctional automatic bottle changing infusion apparatus

Abstract

Disclosed is a multifunctional automatic bottle changing infusion apparatus, which comprises a first bottle stopper puncture head (2) connected to a first infusion bottle (A). The first bottle stopper puncture head (2) is in communication with a first infusion hose (11), and the first infusion hose (11) is in communication with a first inlet of the upper portion of a first drip chamber (5). A second bottle stopper puncture head (3) is connected to the upper portion of a first extrusion hose (9). The lower end of the first extrusion hose (9) is in communication with a second inlet of the upper portion of the first drip chamber (5). The upper portion of a first buoyancy hose (14) extends into the lower portion of the first extrusion hose (9). The outer diameter of the first buoyancy hose (14) is larger than the inner diameter of the first extrusion hose (9). The lower portion of the first buoyancy hose (14) extends into the inner cavity of the first drip chamber (5). The lower portion of the first buoyancy hose (14) communicates with the inner cavity of a first floating ball. The friction resistance generated between the upper portion of the first buoyancy hose (14) and the lower portion of the first extrusion hose (9) is smaller than the combined gravity of the first buoyancy hose (14) and the first floating ball. The sum of the friction resistance and the buoyancy of a liquid medicine to the first floating ball is larger than the combined gravity of the first buoyancy hose (14) and the first floating ball. The infusion apparatus has low cost and high safety performance and can be randomly connected with a plurality of infusion bottles.

Description

A multifunctional automatic bottle-changing infusion device Technical Field

[0001] The present invention relates to infusion devices, in particular to an automatic bottle-changing infusion device. Background Art

[0002] Traditional medical infusion systems place the desired fluid in an IV bottle or bag, suspend it, and use gravity to draw the fluid through a tubing into a vein. The flow rate is manually adjusted using a speed regulator clip attached to the tubing. Recently invented automatic infusion systems connect multiple tubes or utilize atmospheric pressure to change bottles, sometimes with automated controls to fully automate the process. Other steps are similar to traditional infusion systems. Technical issues

[0003] The following problems exist with the above-mentioned various infusion methods: 1) With the traditional method, patients who need to receive more than one bottle of infusion need to change bottles, and when medical staff are busy, they cannot take care of patients, so patient safety is not guaranteed to a certain extent; 2) Traditional bottle change infusion requires tedious steps such as manual disassembly, which wastes time; 3) Most of today's automatic bottle change infusion devices are fixed-bottle and fixed-quantity, or the devices are complex and difficult to control, and cannot be widely used. Technical Solutions

[0004] In order to overcome the shortcomings of existing infusion sets, such as complex devices, low safety performance and high cost, the present invention provides a multifunctional automatic bottle-changing infusion set with low cost, high safety performance and the ability to connect multiple infusion bottles at will.

[0005] The present invention solves the technical problem by adopting the following technical solution: a multifunctional automatic bottle-changing infusion device, comprising a first bottle stopper puncture head connected to a first infusion bottle, the first bottle stopper puncture head being connected to a first infusion hose, the first infusion hose being connected to a first upper inlet of a first dripping hopper, the infusion device further comprising a second bottle stopper puncture head connected to a second infusion bottle, the second bottle stopper puncture head being connected to an upper portion of a first extrusion hose, the lower end of the first extrusion hose being connected to a second upper inlet of the first dripping hopper, the upper portion of a first buoyancy hose extending into a lower portion of the first extrusion hose, the outer diameter of the first buoyancy hose being larger than the inner diameter of the first extrusion hose, the lower portion of the first buoyancy hose extending into an inner cavity of the first dripping hopper, the lower portion of the first buoyancy hose being connected to an inner cavity of a first float, the frictional resistance generated between the upper portion of the first buoyancy hose and the lower portion of the first extrusion hose being smaller than the combined weight of the first buoyancy hose and the first float, and the sum of the frictional resistance and the buoyancy of the medicinal solution on the first float being larger than the combined weight of the first buoyancy hose and the first float.

[0006] Furthermore, the lower outlet of the first drip hopper is connected to the upper part of the second infusion hose, the lower part of the second infusion hose is connected to the upper first inlet of the second drip hopper, the lower outlet of the second drip hopper is connected to the upper part of the third infusion hose, and the lower part of the third infusion hose is connected to the infusion device outlet.

[0007] The infusion pump also includes a third bottle stopper puncture head connected to the third infusion bottle, the third bottle stopper puncture head is connected to the upper part of the second extrusion hose, the lower end of the second extrusion hose is communicated with the upper second inlet of the second drip bucket, the upper part of the second buoyancy hose extends into the lower part of the second extrusion hose, the outer diameter of the second buoyancy hose is larger than the inner diameter of the second extrusion hose, the lower part of the second buoyancy hose extends into the inner cavity of the second drip bucket, the lower part of the second buoyancy hose is communicated with the inner cavity of the second float, the friction resistance generated by the upper part of the second buoyancy hose and the lower part of the second extrusion hose is smaller than the combined gravity of the second buoyancy hose and the second float, and the sum of the friction resistance and the buoyancy of the medicinal solution on the second float is greater than the combined gravity of the second buoyancy hose and the second float.

[0008] According to the above connection relationship, if a third drip bucket is added, it can be matched with the fourth infusion bottle to form the next cascade structure. Similarly, multiple cascade structures can be formed.

[0009] Furthermore, a first flow rate regulator is installed on the first infusion hose, and a second flow rate regulator is installed on the second infusion hose.

[0010] Furthermore, the first bottle stopper puncture head includes a vent tube and a first liquid tube arranged side by side, and the first liquid tube is connected to the upper end of the first input hose; the second bottle stopper puncture head includes a vent tube and a second liquid tube arranged side by side, and the second liquid tube is connected to the upper end of the second input hose; the vent tube is connected to the atmosphere.

[0011] Or: the first bottle stopper puncture head includes a first liquid tube, the first liquid tube is connected to the upper end of the first input hose, and the lower part of the first liquid tube is provided with an air vent; the second bottle stopper puncture head includes a second liquid tube, the second liquid tube is connected to the upper end of the second input hose; the lower part of the second liquid tube is provided with an air vent, and the air vent is connected to the atmosphere.

[0012] The lower part of the second infusion hose and the upper first inlet of the second drip bucket, the lower end of the second extrusion hose and the upper second inlet of the second drip bucket, and the lower outlet of the second drip bucket and the upper part of the third infusion hose are all detachably connected.

[0013] The first buoyancy hose and the second buoyancy hose are made into a vacuum, and the diameters of the first buoyancy hose and the second buoyancy hose are set as R1; the diameters of the first extrusion hose and the second extrusion hose are set as R2; the diameter of the first drip funnel is set as R3, where R2 < R1 < R3. The difference between R2 and R1 is controlled to be small enough so that the hose can be attached to the infusion hose it is connected to before use without falling downwards.

[0014] An extrusion airbag is installed in the middle of the first extrusion hose and the second extrusion hose. Advantages

[0015] The advantages of the present invention are as follows: The flow rate regulator can adjust the rate of the outflowing liquid medicine, and the squeezable hose can generate sufficient pressure so that the buoyancy hose can be manually detached. There can be more than one detachable second drip funnel, and multiple ones can be connected on this basis to meet the needs of patients; the cooperation between the buoyancy hose and the liquid medicine surface effectively controls the sequential outflow of the liquid medicine, and the buoyancy hose can also be automatically detached, achieving the function of automatic bottle change; on the other hand, this device has low cost, simple structure and remarkable effect, and can effectively make up for the deficiencies of the existing infusion set. Brief Description of the Drawings

[0016] Figure 1 is a structural diagram of a multifunctional automatic bottle-changing infusion set.

[0017] Figure 2 is a structural diagram of a detachable drip funnel (the second drip funnel), where (a) is a schematic diagram of the drip funnel and (b) is a schematic diagram of the detachable interface.

[0018] Figure 3 is a structural diagram of the extrusion hose and the buoyancy hose, where (a) is the extrusion hose and (b) is the buoyancy hose.

[0019] Figure 4 is a functional diagram of bottle change in the drip funnel, which is divided into (a), (b) and (c).

[0020] Figure 5 is the remaining combination methods of the air vent tube and the bottle stopper puncture head, where (a) is a schematic diagram of the bottle stopper puncture head and (b) is a schematic diagram of the air vent hole. The Best Embodiment of the Present Invention

[0021] The following is further described in conjunction with the drawings:

[0022] Referring to Figures 1 to 5, a multifunctional automatic bottle-changing infusion set includes a first bottle stopper puncture head connected to a first infusion bottle, the first bottle stopper puncture head communicating with a first infusion hose, the first infusion hose communicating with a first upper inlet of a first dripping hopper, the infusion set further including a second bottle stopper puncture head connected to a second infusion bottle, the second bottle stopper puncture head connected to the upper portion of a first extrusion hose, the lower end of the first extrusion hose communicating with a second upper inlet of the first dripping hopper, an upper portion of a first buoyancy hose extending into a lower portion of the first extrusion hose, an outer diameter of the first buoyancy hose larger than an inner diameter of the first extrusion hose, a lower portion of the first buoyancy hose extending into an inner cavity of the first dripping hopper, a lower portion of the first buoyancy hose communicating with an inner cavity of a first float, a frictional resistance generated between the upper portion of the first buoyancy hose and the lower portion of the first extrusion hose being smaller than the combined weight of the first buoyancy hose and the first float, enabling the first buoyancy hose to adhere to the inner wall of the first extrusion hose before use, and a sum of the frictional resistance and the buoyancy of the liquid on the first float being larger than the combined weight of the first buoyancy hose and the first float.

[0023] Furthermore, the lower outlet of the first drip hopper is connected to the upper part of the second infusion hose, the lower part of the second infusion hose is connected to the upper first inlet of the second drip hopper, the lower outlet of the second drip hopper is connected to the upper part of the third infusion hose, and the lower part of the third infusion hose is connected to the infusion device outlet.

[0024] The infusion pump also includes a third bottle stopper puncture head connected to the third infusion bottle, the third bottle stopper puncture head is connected to the upper part of the second extrusion hose, the lower end of the second extrusion hose is communicated with the upper second inlet of the second drip bucket, the upper part of the second buoyancy hose extends into the lower part of the second extrusion hose, the outer diameter of the second buoyancy hose is larger than the inner diameter of the second extrusion hose, the lower part of the second buoyancy hose extends into the inner cavity of the second drip bucket, the lower part of the second buoyancy hose is communicated with the inner cavity of the second float ball, the friction resistance generated by the upper part of the second buoyancy hose and the lower part of the second extrusion hose is smaller than the combined gravity of the second buoyancy hose and the second float ball, so that the second buoyancy hose can be attached to the inner wall of the second extrusion hose before use, and the sum of the friction resistance and the buoyancy of the liquid medicine on the second float ball is greater than the combined gravity of the second buoyancy hose and the second float ball.

[0025] According to the above connection relationship, if a third drip bucket is added, it can be matched with the fourth infusion bottle to form the next cascade structure. Similarly, multiple cascade structures can be formed.

[0026] Furthermore, a first flow rate regulator is installed on the first infusion hose, and a second flow rate regulator is installed on the second infusion hose.

[0027] Further, the first stopper puncture head includes an air vent pipe and a first liquid delivery pipe arranged side by side, and the first liquid delivery pipe is connected to the upper end of the first input hose; the second stopper puncture head includes an air vent pipe and a second liquid delivery pipe arranged side by side, and the second liquid delivery pipe is connected to the upper end of the second input hose; the air vent pipe is in communication with the atmosphere.

[0028] Or: The first stopper puncture head includes a first liquid delivery pipe, the first liquid delivery pipe is connected to the upper end of the first input hose, and an air vent hole is provided at the lower part of the first liquid delivery pipe; the second stopper puncture head includes a second liquid delivery pipe, the second liquid delivery pipe is connected to the upper end of the second input hose; an air vent hole is provided at the lower part of the second liquid delivery pipe, and the air vent hole is in communication with the atmosphere.

[0029] Between the lower part of the second infusion hose and the upper first inlet of the second drip chamber, between the lower end of the second squeezing hose and the upper second inlet of the second drip chamber, and between the lower outlet of the second drip chamber and the upper part of the third infusion hose are all detachably connected.

[0030] The first buoyancy hose and the second buoyancy hose are made into a vacuum, and the diameters of the first buoyancy hose and the second buoyancy hose are set as R1; the diameters of the first squeezing hose and the second squeezing hose are set as R2; the diameter of the first drip chamber is set as R3, where R2 < R1 < R3. Control the difference between R2 and R1 to be small enough so that the hose can adhere to the connected infusion hose before use without falling off downward.

[0031] Squeezing air bags are installed in the middle of the first squeezing hose and the second squeezing hose.

[0032] In this embodiment, the first infusion bottle A, the second infusion bottle B, and the third infusion bottle C are taken as examples for illustration. The entire multifunctional automatic bottle-changing infusion device includes an air vent pipe 1, a first stopper puncture head 2, a second stopper puncture head 3, a third stopper puncture head 4; a first drip chamber 5, a second drip chamber 6; a first flow rate regulator 7, a second flow rate regulator 8, a first squeezing hose 9, a second squeezing hose 10, a first infusion hose 11, a second infusion hose 12, a third infusion hose 13; a first buoyancy hose 14 and a second buoyancy hose 15.

[0033] The materials of the first stopper puncture head 2, the second stopper puncture head 3, the third stopper puncture head 4, the first drip chamber 5, the second drip chamber 6, the first infusion hose 11, the second infusion hose 12, the third infusion hose 13, the first flow rate regulator 7, and the second flow rate regulator 8 are the same as those of traditional infusion devices. The materials of the first squeezing hose 9, the second squeezing hose 10, the first buoyancy hose 14, and the second buoyancy hose 15 are the same as those of traditional infusion hoses.

[0034] The diameters of the first infusion hose 11 and the second infusion hose 12 are larger than those of conventional infusion hoses, and the diameter of the third infusion hose 13 is the same as that of conventional infusion hoses.

[0035] The first buoyancy hose 14 and the second buoyancy hose 15 are made into vacuum so as to float on the liquid surface.

[0036] Referring to Figure 2 , the detachable drip chamber (second drip chamber) has two connection ports, a and b, on top. Port a has a connection device for connecting to and controlling an external hose, and port c is located at the bottom, through which the liquid medicine flows. Figure 2(a) shows the overall structure of the detachable drip chamber, and Figure 2(b) is an enlarged view of the port on the detachable drip chamber, which connects to the infusion hose.

[0037] Referring to Figure 3, the squeeze tube has a squeeze mechanism in the middle, similar to a small container. By applying external pressure, the buoyant hose is pulled away, allowing the liquid to flow out of either the first or second squeeze tube. This method avoids the potential risk of the buoyant hose not automatically falling downward during automatic bottle change.

[0038] Referring to Figure 4, (a) shows the initial state, when the liquid level in the drip chamber continues to rise to the desired height, at which point other medicine bottles are connected. Because the buoyancy of the liquid surface on the buoyant hose prevents it from falling downward, the liquid from the other medicine bottles does not flow into the drip chamber.

[0039] Figure 4(b) shows that when the liquid medicine flowing into one of the interfaces is almost exhausted, the buoyancy hose automatically falls off. If the buoyancy hose does not fall off automatically, the squeezing device provided on the squeezing hose can be used to squeeze it, thereby generating pressure to cause the buoyancy hose to fall off.

[0040] Figure 4(c) shows the buoyancy hose after it is completely detached. Since the buoyancy hose is very soft, it cannot stand upright when it is completely detached. This ensures that when the liquid medicine flows out, the output port will not be blocked when the liquid medicine level in the drip bucket increases.

[0041] Referring to Figure 5 , in addition to the aforementioned solution of separating the vent tube from the vial puncture tip, that is, not including them in the same pipe, Figure 5 provides another combination method, which further reduces costs by combining the vent tube and the vial puncture tip. (a) Figure 5 shows the overall structure of the combination, and (b) Figure 5 shows the structure of the vent hole, through which outside air enters the infusion bottle, allowing the liquid to flow out.

[0042] Furthermore, the design of the extrusion hose has a squeezing device in the middle, similar to a small container. By applying external pressure, the buoyancy hose is released, allowing the liquid to flow out of the first or second extrusion hose. This method avoids the hidden danger of the buoyancy hose not automatically falling downward during automatic bottle change.

[0043] Furthermore, the design of a detachable drip chamber is also mentioned. As shown in Figure 2(a), the drip chamber is connected by interfaces a and b to control the entry of the drug solution. An outlet c then connects to the next structure. Infusion bottles can be added or removed through the detachable interfaces a and c. Multiple detachable drip chambers can be interconnected, as shown in Figure 2(b). Interfaces a and c connect to the outside world through fine holes, while interface b connects to an extrusion hose, thus meeting the needs of different patients.

[0044] Furthermore, the buoyancy hose and the drip bucket have a control function. Initially, the liquid level in the drip bucket continues to rise to the required height, at which point other medicine bottles are connected. Due to the buoyancy of the liquid surface on the buoyancy hose, the buoyancy hose will not fall off, so the liquid from other medicine bottles will not flow into the drip bucket. When the liquid flowing into one of the interfaces of the drip bucket is almost exhausted, the buoyancy hose will automatically fall off. When the buoyancy hose does not fall off automatically, it can be squeezed using the squeezing device provided on the squeezing hose, thereby generating pressure to make the buoyancy hose fall off. After the buoyancy hose is completely fallen off, since the buoyancy hose is very soft, it cannot stand upright when it is completely fallen off. This ensures that when the liquid flows out, the output port will not be blocked when the liquid level in the drip bucket increases.

[0045] Furthermore, the flow rate regulators function as speed regulators. Initially, to accelerate the flow of solution from bottle A, the first and second flow rate regulators can be fully opened, allowing the liquid levels in the first and second drip buckets to reach the desired height, thereby reducing working time. Once bottles B and C are connected, the flow rate regulators can be adjusted to slow the flow rate.

[0046] In the implementation of the present invention, the first infusion hose is connected to the first bottle stopper puncture head and the first dripping funnel, the second infusion hose is connected to the first dripping funnel and the second dripping funnel, the third infusion hose is connected to the second dripping funnel, the first extrusion hose is connected to the second bottle stopper puncture head and the first dripping funnel, the second extrusion hose is connected to the third bottle stopper puncture head and the second dripping funnel, the first flow rate regulator and the second flow rate regulator are respectively connected to the first infusion hose and the second infusion hose, and the first buoyancy hose and the second buoyancy hose are respectively connected to the first dripping funnel and the second dripping funnel.

[0047] First, the medical staff connected 1 to the prepared medicine bottles A, B, and C, 3 and 4 to 9 and 10 respectively, and then connected bottle A to 11 with 7, and then connected to 5, 12, 8, 6, and 13 through 11. When the liquid level in 5 and 6 reached the required height, it was connected to B and C through 2 and 3. Among them, 14 and 15 were connected to 9 and 10, and the liquid medicine was discharged through 13.

[0048] The medicinal solution in A first flows into the first infusion hose, the first dripping funnel, the second infusion hose, the second dripping funnel, and the third infusion hose, before flowing into the human vein through a traditional infusion process. By fully opening the first and second flow rate regulators, the flow of the medicinal solution in A is accelerated, causing the liquid levels in the first and second dripping funnels to reach the desired height. When the medicinal solution in the first and second dripping funnels reaches a certain level, the second and third bottle stopper puncture tips are connected to infusion bottles B and C, respectively. At this point, the flow rate regulators are controlled to slow the flow of the medicinal solution.

[0049] The first buoyancy hose and the second buoyancy hose block the first extrusion hose and the second extrusion hose. Therefore, at the beginning, the liquid in bottle A flows out, while the liquids in bottles B and C are blocked.

[0050] The buoyancy of the first buoyant hose, created by the liquid in the first drip chamber, keeps it afloat. When bottle A's liquid is nearly empty, the first buoyant hose automatically drops downward. If it doesn't, squeeze the first squeeze hose, using the pressure from the water column to release it, allowing bottle B's liquid to begin flowing out.

[0051] The buoyancy of the second buoyancy hose caused by the liquid in the second drip bucket blocks the outlet of the second infusion hose, but the first extrusion hose is open, so the liquid in bottle B flows out and the liquid in bottle C is still blocked.

[0052] Similarly, when the liquid in bottle B is almost used up, the second buoyancy hose falls off, and the liquid in bottle C begins to flow out by automatic or manual means.

[0053] The first buoyancy hose and the second buoyancy hose cannot stand upright after being detached, so when the subsequent liquid medicine drips into the first dripping bucket, the outlet will not be blocked due to the rising liquid medicine level.

[0054] When the liquid in bottle A is almost used up, the first buoyancy hose falls off and the liquid in bottle B begins to flow out.

[0055] In order to meet the needs of patients, the detachable drip bucket is fully utilized, that is, the second drip bucket can be multiple or can be removed, and the drip buckets can be connected to each other to meet the different needs of patients.

[0056] The liquid medicine will eventually pass through the third infusion hose, then flow through the traditional infusion links, such as the flow regulator, liquid medicine filter, and intravenous needle, and finally enter the human vein, thereby achieving treatment for the patient.

Claims

1. A multifunctional automatic bottle-changing infusion device, comprising a first bottle stopper piercing head connected to a first infusion bottle, the first bottle stopper piercing head being connected to a first infusion hose, the first infusion hose being connected to an upper first inlet of a first drip bucket, Features: The infusion set also includes a second bottle stopper puncture head connected to the second infusion bottle, the second bottle stopper puncture head is connected to the upper part of the first extrusion hose, the lower end of the first extrusion hose is communicated with the upper second inlet of the first drip bucket, the upper part of the first buoyancy hose extends into the lower part of the first extrusion hose, the outer diameter of the first buoyancy hose is larger than the inner diameter of the first extrusion hose, the lower part of the first buoyancy hose extends into the inner cavity of the first drip bucket, the lower part of the first buoyancy hose is communicated with the inner cavity of the first float, the friction resistance generated by the upper part of the first buoyancy hose and the lower part of the first extrusion hose is smaller than the combined gravity of the first buoyancy hose and the first float, and the sum of the friction resistance and the buoyancy of the medicinal solution on the first float is greater than the combined gravity of the first buoyancy hose and the first float; an extrusion airbag is installed in the middle of the first extrusion hose and the second extrusion hose.

2. The multifunctional automatic bottle-changing infusion device according to claim 1, Features: The lower outlet of the first drop bucket is connected to the upper part of the second infusion hose, the lower part of the second infusion hose is communicated with the upper first inlet of the second drop bucket, the lower outlet of the second drop bucket is connected to the upper part of the third infusion hose, and the lower part of the third infusion hose is communicated with the infusion set outlet; the infusion set also includes a third bottle stopper puncture head connected to the third infusion bottle, the third bottle stopper puncture head is connected to the upper part of the second extrusion hose, the lower end of the second extrusion hose is communicated with the upper second inlet of the second drop bucket, the upper part of the second buoyancy hose extends into the lower part of the second extrusion hose, the outer diameter of the second buoyancy hose is larger than the inner diameter of the second extrusion hose, the lower part of the second buoyancy hose extends into the inner cavity of the second drop bucket, the lower part of the second buoyancy hose is communicated with the inner cavity of the second float, the friction resistance generated between the upper part of the second buoyancy hose and the lower part of the second extrusion hose is smaller than the combined gravity of the second buoyancy hose and the second float, and the sum of the friction resistance and the buoyancy of the liquid medicine on the second float is larger than the combined gravity of the second buoyancy hose and the second float.

3. The multifunctional automatic bottle-changing infusion device according to claim 2, Features: A first flow rate regulator is installed on the first infusion hose, and a second flow rate regulator is installed on the second infusion hose.

4. The multifunctional automatic bottle-changing infusion device according to claim 2, Features: The first bottle stopper piercing head includes a vent tube and a first liquid tube arranged side by side, and the first liquid tube is connected to the upper end of the first input hose; the second bottle stopper piercing head includes a vent tube and a second liquid tube arranged side by side, and the second liquid tube is connected to the upper end of the second input hose; the vent tube is connected to the atmosphere.

5. The multifunctional automatic bottle-changing infusion device according to claim 2 or 3, Features: The first bottle stopper piercing head includes a first liquid passing tube, which is connected to the upper end of the first input hose and has a vent hole at the lower portion thereof; the second bottle stopper piercing head includes a second liquid passing tube, which is connected to the upper end of the second input hose; the vent tube is connected to the atmosphere and has a vent hole at the lower portion thereof.

6. The multifunctional automatic bottle-changing infusion device according to claim 2 or 3, Features: The lower part of the second infusion hose and the upper first inlet of the second drip bucket, the lower end of the second extrusion hose and the upper second inlet of the second drip bucket, and the lower outlet of the second drip bucket and the upper part of the third infusion hose are all detachably connected.

7. The multifunctional automatic bottle-changing infusion device according to claim 2 or 3, Features: The first buoyancy hose and the second buoyancy hose are made into vacuum, and the diameters of the first buoyancy hose and the second buoyancy hose are set to R1; the diameters of the first extrusion hose and the second extrusion hose are set to R2; the diameter of the first drip bucket is set to R3, wherein R2 <R1<R3。

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