CN114893392B

CN114893392B - Portable multifunctional liquid lightering device and use method

Info

Publication number: CN114893392B
Application number: CN202210546153.0A
Authority: CN
Inventors: 张坤; 祁文军; 徐海鹏; 陆国祥; 潘勇; 杨飞; 项秋战; 杨晓亮; 刘德智; 徐德忠
Original assignee: Jiangnan Shipyard Group Co Ltd
Current assignee: Jiangnan Shipyard Group Co Ltd
Priority date: 2022-05-18
Filing date: 2022-05-18
Publication date: 2023-11-07
Anticipated expiration: 2042-05-18
Also published as: CN114893392A

Abstract

The application provides a portable multifunctional liquid transfer device and a use method thereof. Each component is integrally arranged on the fixed support, so that the integrated portable device is realized. The application has reasonable design, small volume, simple operation, intelligence, multiple application scenes, wide application range, time and labor saving and simple flow. Compared with the similar devices, the intelligent monitoring device has the advantages of more flexible operation, more convenient use, more intelligent monitoring and safer guarantee. So that the liquid transfer does not need to be operated by multiple persons, the cable is not required to be pulled temporarily, and the liquid transfer amount is not required to be measured manually.

Description

Portable multifunctional liquid lightering device and use method

Technical Field

The application relates to the field of ships and vehicles, in particular to a portable multifunctional liquid transfer device and a use method thereof.

Background

In boats and ships, vehicles, municipal administration, industry, the liquid of transfer is very frequent work, in the liquid transfer work in the past, often use great pump package to pass the transfer, need pull interim cable simultaneously and just can operate, still need two people and more cooperate in the operation process to accomplish this work, the liquid volume of transfer also is difficult to very audio-visual observing, and because the characteristic safety that the medium was inflammable when the oil material was transferred can not get the guarantee.

Therefore, a multifunctional and portable liquid transfer device is required to solve the technical problems in the conventional liquid transfer operation.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present application provides a portable multifunctional liquid transfer device, including a transfer pump, the transfer pump being connected with a liquid inlet pipe and a liquid outlet pipe, a filter being installed in the liquid inlet pipe, the liquid inlet pipe between the filter and the transfer pump being connected with an inlet pressure gauge through a pressure gauge pipe, a flowmeter being installed in the liquid outlet pipe, the liquid outlet pipe between the flowmeter and the transfer pump being connected with an outlet pressure gauge, an outlet valve being provided at an outlet end of the liquid outlet pipe;

the transfer pump is powered by a drive motor, which provides electrical energy through a connecting cable and an electrical energy assembly.

Preferably, the electric energy component comprises a power supply main switch, a DC24V battery pack, an AC 220V-DC 24V inverter, a DC 24V-DC3.7V transformer, a pump set contactor and a power supply main switch, wherein the inverter is connected with a 220V power supply connector, and the electric energy component is further provided with a cable stuffing box to ensure stable cable connection and is surrounded by heat-insulating fireproof cotton around the battery pack to protect the battery pack.

Preferably, the device also comprises an operation display panel, wherein the operation display panel comprises a pump set switch button, a display panel and a flow adjusting button, and the pump set switch button is used for controlling the action of a pump set contactor so as to realize the normal start and stop of a driving motor; the display panel comprises an electric quantity display module and a flow display module, wherein the electric quantity display module is connected with the battery pack through a cable so as to display the electric quantity of the battery pack, and the flow display module is connected with the flowmeter through the cable so as to measure and display the volume of liquid in a lightance mode.

Preferably, the power connector is electrically connected with the inverter, the output end of the inverter is respectively connected to the battery pack and the power master switch, the power master switch is respectively connected with the transformer and the pump set contactor, the pump set contactor is connected and controls the driving motor, the output end of the transformer is respectively connected to the operation display panel and the flowmeter to provide electric energy, a pump set switch button in the operation display panel is connected with the pump set contactor to control the opening and closing of the pump set contactor, and the operation display panel is also connected with the flowmeter and the battery pack to display electric quantity and flow.

Preferably, the fire extinguishing device further comprises a fixing support, the liquid inlet pipe and the liquid outlet pipe are communicated with the lightering pump and are fixed on the surface of the fixing support in a U-shaped mode, the driving motor and the electric energy component are located in a U-shaped space, the operation display panel, the inlet pressure gauge and the outlet pressure gauge are arranged at the bottom of the fixing support, and the fire extinguishing device is arranged at the lower left corner of the fixing support.

Preferably, the device further comprises a grounding terminal, wherein the grounding terminal is a part of metal connector protruding from the fixing bracket and is used for physically grounding the whole device.

Preferably, the device also comprises rollers, wherein the rollers are rubber wheels and are composed of 4 rollers, and the rollers are respectively and fixedly connected to the bottom of the fixed bracket and used for enabling the device to roll on a flat ground in a movable manner; push-pull handles are arranged at the left end and the right end of the fixed support and used for pushing and lifting the device.

Preferably, the liquid inlet pipe and the liquid outlet pipe are fixed by adopting a clamp, the clamp comprises a base, a clamp ring and a fixing screw, the clamp ring tightly presses the pipeline on the base and fixes the pipeline through the fixing screw, and rubber pads are arranged at the parts of the clamp ring and the base, which are in contact with the pipeline.

The application also provides a use method of the liquid transfer device, which comprises the following steps:

s1, pushing or carrying the liquid transfer device, placing the liquid transfer device at a proper position where liquid is required to be transferred, and checking the integrity of the fire extinguishing equipment to ensure normal availability;

s2, connecting an external pipeline to joints of a liquid inlet pipe and a liquid outlet pipe, and connecting the grounding terminal to a nearby grounding terminal by using a cable;

and S3, turning on the power supply main switch, and checking whether the electric quantity of the battery pack and the flow display of the flowmeter displayed on the operation display panel are normal or not. Adjusting a flow adjusting button on the operation display panel to set the flow of the required lightering liquid, wherein the display unit is a liter;

s4, opening a pump set switch button, adjusting the outlet valve, observing the jumping conditions of the inlet pressure gauge, the outlet pressure gauge and the flowmeter, and closing the pump set switch button in time if the jump condition exists;

s5, after the device to be carried out normally operates, the flow of the lightering is estimated according to the flow displayed by the display panel on the operation display panel, and when the actual flow of the lightering liquid reaches the set flow, the flowmeter controls the power supply main switch to be powered off, and the pump set stops operating.

Preferably, the method further comprises the following steps:

s6, if the set transfer amount is found to be less than the actual requirement in the transfer operation, setting a numerical value through the flow adjusting button again to carry out incremental transfer; when the set transfer amount is larger than the actual demand amount, the power supply main switch can be manually turned off when the flow displayed by the display panel reaches the actual demand amount, and the transfer work is stopped;

s7, when the battery pack is full of electricity, an alternating current power supply is not needed to be connected for use, 220V alternating current is needed to be connected to the power connector after the electricity quantity of the battery pack is used, and the device is charged while the battery pack is used; when the power display strip in the electric quantity display module of the display panel is in a full grid, the display strip is in a full power state, otherwise, the power storage is insufficient, and when the power display strip is lower than one third of the state, the display strip needs to be charged in time;

and S8, when the driving motor smokes and fires or the battery pack smokes and fires due to vibration or high temperature, the fire extinguishing equipment is required to be taken out immediately, and the fires are extinguished.

As described above, the application provides a portable multifunctional liquid transfer device and a use method thereof, wherein the liquid transfer device comprises a transfer pump, an electric energy component, an operation display panel and the like, a liquid inlet pipe and a liquid outlet pipe are communicated with the transfer pump and are fixed on the surface of a fixed support in a U shape, a U-shaped opening faces upwards, a driving motor and the electric energy component are positioned in a U-shaped space, the operation display panel, an inlet pressure gauge and an outlet pressure gauge are arranged at the bottom of the fixed support, and fire extinguishing equipment is arranged at the lower left corner of the fixed support. Each component is integrally arranged on the fixed support, so that the integrated portable device is realized. The application has reasonable design, small volume, simple operation, intelligence, multiple application scenes, wide application range, time and labor saving and simple flow. Compared with the liquid lighters of the same kind, the liquid lighters have the advantages of more flexible operation, more convenient use, more intelligent monitoring and safer guarantee. So that the liquid transfer does not need to be operated by multiple persons, the cable is not required to be pulled temporarily, and the liquid transfer amount is not required to be measured manually.

Drawings

Fig. 1 shows a schematic configuration of a liquid transfer device according to the present application.

Fig. 2 is a schematic structural diagram of an electrical energy assembly according to the present application.

Fig. 3 is a schematic structural view of an operation display panel according to the present application.

Fig. 4 shows a schematic structural view of the clip according to the present application.

Fig. 5 is a schematic diagram showing the circuit connection of the components in the present application.

Description of element reference numerals

1. Drive motor 18 clamp ring

2. Outlet valve 19 base

3. Electric power assembly 20 fixing screw

4. Push-pull handle of liquid inlet pipe 21

5. Filter 22 display panel

6. Switch button of pump set 23 of lightering pump

7. Flowmeter 24 fixed bolster

8. Power connector for connecting cable 25

9. Liquid outlet pipe 26 heat-insulating fireproof cotton

10. Cable stuffing box with grounding terminal 27

11. Battery pack cable with fixed support 28

12. Pressure gauge tube 29 battery pack

13. Inlet pressure gauge 30 inverter

14. Transformer for outlet pressure gauge 31

15. Operation display panel 32 pump group contactor

16. Clamp 33 power supply main switch

17. Roller 34 flow regulating button

Detailed Description

Other advantages and effects of the present application will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present application with reference to specific examples. The application may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present application.

As described in detail in the embodiments of the present application, the cross-sectional view of the device structure is not partially enlarged to a general scale for convenience of explanation, and the schematic drawings are only examples, which should not limit the scope of the present application. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.

For ease of description, spatially relative terms such as "under", "below", "beneath", "above", "upper" and the like may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that these spatially relative terms are intended to encompass other orientations of the device in use or operation in addition to the orientation depicted in the figures. Furthermore, when a layer is referred to as being "between" two layers, it can be the only layer between the two layers or one or more intervening layers may also be present. As used herein, "between … …" is meant to include both endpoints.

In the context of the present application, a structure described as a first feature being "on" a second feature may include embodiments where the first and second features are formed in direct contact, as well as embodiments where additional features are formed between the first and second features, such that the first and second features may not be in direct contact.

It should be noted that, the illustrations provided in the present embodiment merely illustrate the basic concept of the present application by way of illustration, and only the components related to the present application are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of each component in actual implementation may be changed at will, and the layout of the components may be more complex.

In the past liquid transfer, generally, use bigger pump package to prepare different grade type's device simultaneously still for different media, still need connect alternating current when the transfer, the process is loaded down with trivial details, and because the characteristic safety that the medium was inflammable when the oil material was transferred to the transfer can not get the guarantee.

In order to solve the drawbacks of the existing transfer device, the present application provides a portable multifunctional liquid transfer device, as shown in fig. 1, including:

the lightering pump 6, lightering pump 6 is connected with feed liquor pipe 4 and drain pipe 9, install filter 5 in the feed liquor pipe 4, be located between filter 5 and the lightering pump 6 feed liquor pipe 4 is connected with import manometer 13 through manometer pipe 12, install flowmeter 7 in the drain pipe, flowmeter 7 and lightering pump 6 between drain pipe 9 is connected with export manometer 14, the exit end of drain pipe 9 is equipped with outlet valve 2.

Specifically, the pump 6 is powered by a drive motor 1, the drive motor 1 providing electrical energy via a connecting cable 8 and an electrical energy assembly 3. The driving motor 1 is a 24V direct current brushless permanent magnet motor and is used for driving the transfer pump 6; the transfer pump 6 is a small double screw pump for pumping liquid. The outlet valve 2 is a common copper gate valve and is used for controlling the flow and the pressure of liquid discharge. The filter 5 is a common paper filter element filter, and has the main function of filtering the sucked liquid, so that the liquid discharged by the lightering device is cleaner. The flowmeter 7 is a liquid turbine flowmeter, and is configured to measure the amount of liquid to be transferred and transmit the measured amount to the operation display panel 15 by a pulse signal. The liquid inlet pipe 4 and the liquid outlet pipe 9 are formed by connecting metal pipes, and mainly serve to convey liquid from an inlet of the device to an outlet of the device, and the inlet and outlet connectors are common threaded connectors and are used for conveying the liquid to be lightered to the inlet of the device and conveying the liquid subjected to overpressure through the device to a connected outlet pipeline. The inlet pressure gauge 13 and the outlet pressure gauge 14 are common pointer pressure gauges, and display the inlet and outlet pressures of the device;

further, as shown in fig. 2, the electric energy assembly 3 includes a main power switch 33, a DC24V battery 29, an AC 220V-DC 24V inverter 30, a DC 24V-DC3.7V transformer 31, a pump set contactor 32, and a main power switch 33, the inverter 30 is connected with a 220V power connector 25, the electric energy assembly 3 is further provided with a cable stuffing box 27 to ensure stable cable connection, and a heat-insulating and fireproof cotton 26 surrounding the battery 29 to protect the battery 29, thereby ensuring safety of the device in the lightering operation. The battery pack 29 is used to store electric power.

Specifically, the inverter 30 is capable of converting household alternating current into 24V direct current that can be used by the driving motor 1, and the transformer 31 is capable of further converting the 24V direct current into 3.7V direct current, thereby supplying power to the flow meter 7 and the operation display panel 15. The 220V power connector 25 is a female end of a three-hole universal aviation connector, and is used for conveying 220V alternating current which is normally used to the device.

Further, the liquid transfer device further includes:

the operation display panel 15, as shown in fig. 3, includes a pump set switch button 23, a display panel 22, and a flow rate adjusting button 34, where the pump set switch button 23 is used to control the action of a pump set contactor 32 so as to realize the normal start and stop of the pump set (i.e. the pump 6 and the driving motor 1); the display panel comprises an electric quantity display module and a flow display module, wherein the electric quantity display module is connected with the battery pack 29 through a cable so as to display the electric quantity of the battery pack 29, and the flow display module is connected with the flowmeter 7 through a cable so as to measure and display the volume of liquid to be lighter.

Specifically, as shown in fig. 5, the circuit connection of the liquid transfer device is: the power connector 25 is electrically connected with the inverter 30, and the output end of the inverter 30 is respectively connected to the battery pack 29 and the power main switch 33, so that the power can be directly supplied to the computer of the whole system, and the electric energy can be stored through the battery pack 29. The power main switch 33 is respectively connected with the transformer 31 and the pump set contactor 32, the pump set contactor 32 is connected with and controls the driving motor 1, and the output end of the transformer 31 is respectively connected with the operation display panel 15 and the flowmeter 7 to supply electric energy. The pump set switch button 23 in the operation display panel 15 is connected to the pump set contactor 32 to control the opening and closing of the pump set contactor 32. The operation display panel 15 is also connected to the flowmeter 7 and the battery pack 29, so as to display the electric quantity and the flow rate. The circuit connection mainly consists of a kinetic energy cable, which is mainly used for delivering electric energy to the pump group motor, and a communication cable, which is mainly used for transmitting signals of the flowmeter and the battery pack, as well as the switches, to the operation display panel 15.

The flow control button 34 is used to set the flow of the liquid to be transferred so that the device can automatically stop when the liquid set transfer amount reaches the required amount. The electric quantity display module is directly connected with the anode and the cathode of the battery pack 29 and is used for monitoring the electric quantity of the battery and displaying in a long-strip lattice shape; the flow display module is connected to the flow meter 7 for metering and summarizing the volume of the liquid to be transferred, displayed digitally in liters.

Further, the ports of the liquid inlet pipe 4 and the liquid outlet pipe 9 are fixed by a clamp 16, as shown in fig. 4, the clamp 16 comprises a base 19, a clamp ring 18 and a fixing screw 20, and the clamp ring 18 compresses the pipeline on the base 19 and fixes the pipeline by the fixing screw 20. Rubber pads are arranged at the parts of the compression ring 18 and the base 19, which are in contact with the pipeline.

Further, the device also comprises a grounding terminal 10, wherein the grounding terminal 10 is a part of metal connector protruding out of the fixing bracket 24, and the main function is to physically ground the whole device, so that the safety in use is ensured; the whole device is arranged on the fixed support 24, and the fixed support 24 is square, so that the integrated portable device is convenient to carry. The fixing bracket 24 is an aluminum fixing bracket for fixing all parts of the device, and two ends of the fixing bracket are provided with push-pull handles 21 for pushing and lifting the device.

Further, the fire extinguishing device 11 is also included, and the fire extinguishing device 11 is a foam fire extinguisher, and has the function of extinguishing fire in time when the fire occurs outside the device or the device, so as to ensure the fire resistance and the dangerous case resistance of the device;

further, the device also comprises rollers 17, wherein the rollers 17 are common rubber wheels, and are composed of 4 total rollers, and are respectively and fixedly connected to the bottom of the fixed support 24, so that the device can roll on the flat ground in a movable manner, and the movement is more convenient.

As an example, the arrangement of the entire liquid transfer device is in particular: the fixed bolster is vertical setting, feed liquor pipe 4 and drain pipe 9 and transfer pump 6 intercommunication are the U type and are fixed in the surface of fixed bolster 24, and the U type opening is upwards, driving motor 1 and electric energy subassembly 3 are located U type space, operation display panel 15, import manometer 13 and export manometer 14 arrange in the bottom of fixed bolster 24, fire extinguishing apparatus 11 arrange in the lower left corner of fixed bolster 24. The arrangement scheme in the example can maximize space utilization and reduce the whole volume to the greatest extent, so that the integrated portable device is realized. Of course, this arrangement is not exclusive and can be adjusted as desired in practice.

The application also provides a use method of the portable multifunctional liquid transfer device, which specifically comprises the following steps:

s1, pushing or carrying the liquid transfer device, placing the liquid transfer device at a proper position for transferring liquid, checking the integrity of the fire extinguishing equipment 11, and determining whether the liquid transfer device is available;

s2, connecting an external pipeline to joints of the liquid inlet pipe 4 and the liquid outlet pipe 9, and connecting the grounding terminal 10 to a nearby grounding end by using a cable;

s3, turning on the power supply main switch 33, and checking whether the electric quantity of the battery pack 29 displayed on the operation display panel 15 and the flow rate display of the flow meter 7 are normal. Adjusting a flow rate adjusting button 34 on the operation display panel 15 to set the flow rate of the liquid to be rejected, wherein the display unit is a liter;

s4, opening a pump set switch button 23, adjusting the outlet valve 2, observing the jumping conditions of the inlet pressure gauge 13, the outlet pressure gauge 14 and the flowmeter 7, and closing the pump set switch button 23 if abnormality exists.

S5, after the device to be operated normally, the device can be operated all the time, and the flow rate of the lightnings is estimated according to the flow rate displayed by the display panel 22 on the operation display panel 15. When the actual liquid flow reaches the set flow, the flowmeter 7 controls the power supply main switch 33 to be powered off, and the pump set stops running.

S6, if the set transfer amount is found to be less than the actual requirement in the transfer operation, setting a numerical value through the flow adjusting button 34 again, and performing incremental transfer; when the amount of transfer is set to be larger than the actual demand, the power supply main switch 33 may be manually turned off to stop the transfer when the flow rate displayed on the display panel 22 reaches the actual demand.

S7, when the battery pack 29 is full of electricity, an alternating current power supply is not needed to be connected for use, 220V alternating current is needed to be connected to the power connector 25 after the electricity of the battery pack 29 is used for charging the device, and meanwhile the device can be charged while being used; when the power display bar in the power display module of the display panel 22 is in a full grid, the power display bar is in a full power state, otherwise, the power storage is insufficient, and when the power display bar is lower than one third of the power display bar, the power display bar needs to be charged in time.

S8, when the driving motor 1 emits smoke and fires or the battery 29 emits smoke and fires due to vibration or high temperature, the fire extinguishing apparatus 11 needs to be immediately taken out to extinguish the fires.

In summary, the application provides a portable multifunctional liquid transfer device and a use method thereof, wherein the liquid transfer device comprises a transfer pump, an electric energy component, an operation display panel and the like, a liquid inlet pipe and a liquid outlet pipe are communicated with the transfer pump and are fixed on the surface of a fixed support in a U shape, a U-shaped opening faces upwards, a driving motor and the electric energy component are positioned in a U-shaped space, the operation display panel, an inlet pressure gauge and an outlet pressure gauge are arranged at the bottom of the fixed support, and fire extinguishing equipment is arranged at the lower left corner of the fixed support. Each component is integrally arranged on the fixed support, so that the integrated portable device is realized. The application has reasonable design, small volume, simple operation, intelligence, multiple application scenes, wide application range, time and labor saving and simple flow. Compared with the liquid lighters of the same kind, the liquid lighters have the advantages of more flexible operation, more convenient use, more intelligent monitoring and safer guarantee. So that the liquid transfer does not need to be operated by multiple persons, the cable is not required to be pulled temporarily, and the liquid transfer amount is not required to be measured manually.

The above embodiments are merely illustrative of the principles of the present application and its effectiveness, and are not intended to limit the application. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the application. Accordingly, it is intended that all equivalent modifications and variations of the application be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. The portable multifunctional liquid transfer device is characterized by comprising a transfer pump, wherein the transfer pump is connected with a liquid inlet pipe and a liquid outlet pipe, a filter is arranged in the liquid inlet pipe, the liquid inlet pipe between the filter and the transfer pump is connected with an inlet pressure gauge through a pressure gauge pipe, a flowmeter is arranged in the liquid outlet pipe, an outlet pressure gauge is connected with the liquid outlet pipe between the flowmeter and the transfer pump, and an outlet valve is arranged at the outlet end of the liquid outlet pipe;

the lightering pump is powered by a driving motor, the driving motor provides electric energy by a connecting cable and an electric energy component, the electric energy component comprises a main power switch, a DC24V battery pack, an AC 220V-DC 24V inverter, a DC 24V-DC3.7V transformer and a pump group contactor, and the inverter is connected with a 220V power connector;

the liquid lightering device further comprises an operation display panel, wherein the operation display panel comprises a pump set switch button, a display panel and a flow adjusting button, and the pump set switch button is used for controlling the action of a pump set contactor so as to realize the normal start and stop of a driving motor; the display panel comprises an electric quantity display module and a flow display module, wherein the electric quantity display module is connected with the battery pack through a cable so as to display the electric quantity of the battery pack, and the flow display module is connected with the flowmeter through a cable so as to measure and display the volume of liquid to be refused;

the power connector is electrically connected with the inverter, the output end of the inverter is respectively connected to the battery pack and the power master switch, the power master switch is respectively connected with the transformer and the pump set contactor, the pump set contactor is connected with and controls the driving motor, the output end of the transformer is respectively connected to the operation display panel and the flowmeter to provide electric energy, and a pump set switch button in the operation display panel is connected with the pump set contactor to control the opening and closing of the pump set contactor.

2. The liquid transfer device of claim 1, wherein the electrical energy assembly is further provided with a cable stuffing box to ensure a secure cable connection and a heat insulating and fire resistant cotton surrounding the battery pack to protect the battery pack.

3. The liquid transfer device of claim 1, further comprising a fixed bracket, wherein the liquid inlet pipe and the liquid outlet pipe are communicated with the transfer pump and are fixed on the surface of the fixed bracket in a U shape, the driving motor and the electric energy component are positioned in the U-shaped space, the operation display panel, the inlet pressure gauge and the outlet pressure gauge are arranged at the bottom of the fixed bracket, and the fire extinguishing equipment is arranged at the lower left corner of the fixed bracket.

4. A liquid transfer device according to claim 3, further comprising a ground terminal which is a portion of the metal tab protruding from the fixed bracket for physically grounding the entire device.

5. The liquid lightering device of claim 4, further comprising rollers, wherein the rollers are rubber wheels, and are composed of 4 total rollers, and are fixedly connected to the bottom of the fixed bracket respectively, so that the device rolls in a flat ground moving mode;

push-pull handles are arranged at the left end and the right end of the fixed support and used for pushing and lifting the device.

6. The liquid lightering device of claim 1, wherein the liquid inlet pipe and the liquid outlet pipe are fixed by adopting a clamp, the clamp comprises a base, a clamp ring and a fixing screw, the clamp ring compresses the pipeline on the base and fixes the pipeline by the fixing screw, and rubber pads are arranged at the parts of the clamp ring and the base, which are contacted with the pipeline.

7. A method of using a liquid transfer device according to any one of claims 5 to 6, comprising the steps of:

s3, turning on the power supply main switch, checking whether the electric quantity of the battery pack and the flow rate display of the flowmeter displayed on the operation display panel are normal, and adjusting a flow rate adjusting button on the operation display panel to set the flow rate of the liquid to be rejected, wherein the display unit is rising;

8. The method of use of claim 7, further comprising the steps of: