Electric control liquid taking device

Abstract

The utility model provides an electric control liquid taking device which comprises a liquid storage body, a liquid outlet assembly and a gas injection assembly, the liquid outlet assembly and the gas injection assembly are arranged at the two ends of the liquid storage body in an interchangeable mode, and a gas-liquid isolation piston is arranged in the liquid storage body to correspondingly divide the interior of the liquid storage body into a liquid storage bin and a gas storage bin. The air injection assembly injects air into the air inflation cavity to push the piston to enable liquid to flow out of the liquid outlet assembly, the liquid outlet nozzle assembly is detachably matched with the liquid outlet assembly, and an electromagnetic valve structure for controlling a liquid outlet nozzle to be opened and closed is arranged on the liquid outlet nozzle assembly. According to the electric control liquid taking device, liquid taking operation can be achieved through electric control, and the whole liquid taking process is more convenient and faster.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid extraction by inflation, and particularly relates to an electronically controlled liquid extraction device. Background Art

[0002] With the continuous progress of technology, people's requirements for liquid extraction devices are getting higher and higher. They not only need higher reliability and stability, but also expect more intelligent and convenient operations. In many scenarios involving liquid extraction, traditional liquid extraction methods often have many inconveniences. For example, the liquid extraction process may be more cumbersome, making it difficult to achieve convenient and efficient operations; when the pipeline is long, it is easy to cause secondary pollution, increasing the cleaning difficulty; a large installation space is required, which is not convenient for adapting to various operating conditions. At the same time, in some specific scenarios, such as when precise control of the liquid extraction volume or automated liquid extraction is required, traditional methods often cannot meet the requirements. Summary of the Utility Model

[0003] In order to solve the above problems existing in the prior art, the present application provides an electronically controlled liquid extraction device to solve the above technical defect problems.

[0004] According to the first aspect of the present utility model, an electronically controlled liquid extraction device is proposed, which includes a liquid storage body, and a liquid outlet assembly and an air injection assembly that are interchangeably arranged at both ends of the liquid storage body. An air-liquid isolation piston is arranged inside the liquid storage body to correspondingly divide the inside of the liquid storage body into a liquid storage chamber and an air storage chamber. The air injection assembly injects air into the inflation cavity to push the piston so that the liquid flows out from the liquid outlet assembly. The device also includes a liquid outlet nozzle assembly, which is detachably matched with the liquid outlet assembly, and an electromagnetic valve structure for controlling the opening and closing of the liquid outlet nozzle is arranged on the liquid outlet nozzle assembly. By setting the interchangeable liquid outlet assembly and air injection assembly and the internal air-liquid isolation piston, the effective separation of the liquid storage chamber and the air storage chamber is realized. Using the air injection to push the piston to make the liquid flow out from the liquid outlet assembly, and cooperating with the liquid outlet nozzle assembly with an electromagnetic valve structure, the liquid extraction operation can be realized electronically, making the overall liquid extraction process more convenient and fast.

[0005] In some specific embodiments, the liquid storage body is a double-layer hollow tank structure. The cooperation modes of the liquid outlet assembly and the air injection assembly with the liquid storage body include threaded connection or snap connection, and a sealing structure is arranged at the cooperation position. The liquid storage body adopts a double-layer hollow tank structure. On the one hand, it can better protect the internal cavity, preventing the air-liquid isolation piston from jamming and the leakage of the chamber medium due to external collision; on the other hand, the interlayer can play a heat preservation role, which is suitable for storing temperature-sensitive liquids. The liquid outlet assembly and the air injection assembly are connected to the liquid storage body by threaded connection or snap connection, and a sealing structure is arranged. On the one hand, it is convenient for the installation and disassembly of the components and for replacing the tank, and on the other hand, it ensures the sealing of the connection and prevents liquid leakage.

[0006] In some specific embodiments, a two-way on-off valve structure is provided in the middle of the gas-liquid isolation piston. The two-way on-off valve structure includes a valve core, a sealing piece, and a reset elastic body. A through-hole is provided in the middle of the sealing piece. The valve core passes through the through-hole and the middle of the valve core is in sealing cooperation with the through-hole. A pair of reset elastic bodies are symmetrically arranged at both ends of the valve core. When any end of the valve core triggers the liquid outlet assembly, the two-way on-off valve conducts. For the two-way on-off valve in the middle of the gas-liquid isolation piston, when the liquid extraction is nearly completed, the valve core is triggered to conduct, allowing the gas on the air pressure chamber side to rush into the liquid storage chamber, enabling the complete extraction of the remaining liquid even when the liquid extraction port is at a low position, improving the utilization rate of the liquid. At the same time, after the liquid extraction is completed, opening the liquid extraction end cover can restore the sealed state under the action of the reset elastic body, facilitating the conversion of the gas-liquid chamber.

[0007] In some specific embodiments, the liquid outlet assembly includes a liquid outlet body and a liquid outlet valve core structure. A liquid outlet cavity for accommodating the liquid outlet valve core structure is provided in the middle of the liquid outlet body, and a convex connecting portion is formed in the middle of the outer surface of the liquid outlet body. The liquid outlet nozzle assembly is in sealing cooperation with the convex connecting portion. The liquid outlet valve core structure includes a valve core fixing seat, a liquid outlet valve core, a shaft sleeve, a return spring, and a sealing sleeve. The valve core fixing seat is fixedly arranged on the lower end surface of the liquid outlet cavity. The surface of the valve core fixing seat is provided with a plurality of channels communicating the liquid outlet cavity and the liquid storage cavity in a hollow manner. The liquid outlet valve core is fixedly arranged in the middle of the valve core fixing seat. A valve core cavity for accommodating the liquid outlet valve core is provided inside the shaft sleeve. The return spring is arranged between the liquid outlet valve core and the valve core cavity. The sealing sleeve covers the connection between the liquid outlet valve core and the shaft sleeve. This liquid outlet valve core structure has good stability and sealing performance, can reduce the accumulation of impurities, and improves the quality of liquid outlet and the service life of the device.

[0008] In some specific embodiments, a filter mesh cover is detachably provided at the bottom of the liquid outlet assembly. One end of the liquid outlet valve core extends out of the bottom of the valve core fixing seat, and the filter mesh cover is detachably matched with one end of the liquid outlet valve core. The filter mesh cover can filter impurities in the liquid, ensure the purity of the outflowing liquid, prevent the fluid from carrying foreign objects and causing the sealing failure of the internal valve structure. At the same time, the detachable design facilitates the cleaning and replacement of the filter mesh cover.

[0009] In some specific embodiments, the gas injection assembly is an external gas supply structure, which is connected to an external inflation device. The external gas supply structure includes a direct gas supply structure or a gas storage structure. The gas injection assembly being an external gas supply structure can be connected to an external inflation device, providing a variety of gas supply method options to meet the requirements of different usage scenarios.

[0010] In some specific embodiments, the direct gas supply structure is provided with a one-way air inlet nozzle and a pressure relief valve on the gas injection assembly. The one-way air inlet nozzle is connected to an external gas filling device through a gas pipe. The one-way air inlet nozzle and the pressure relief valve in the direct gas supply structure ensure that the external gas filling device can supply gas to the gas storage bin safely and stably, and can relieve pressure in time when the pressure is too high, ensuring the safety of the device.

[0011] In some specific embodiments, the gas storage structure further includes a sealed bin inside the gas injection assembly. A one-way air inlet nozzle, a pressure relief valve, a pressure reducing valve, and a check valve are arranged in the sealed bin. The one-way air inlet nozzle and the pressure relief valve are used to communicate with the outside of the gas injection assembly. After the external gas filling device injects gas, it passes through the pressure reducing valve and the check valve in sequence and enters the gas storage bin. After reaching the preset pressure, it continues to pressurize and store pressure in the sealed bin, and can supply gas to the gas storage bin continuously and stably without connecting an external pipeline. Components such as the sealed bin and the one-way air inlet nozzle, pressure relief valve, pressure reducing valve, and check valve inside the gas storage structure can decompress and stabilize the pressure of the gas after the external gas filling device injects the gas, ensuring the stability of the pressure in the gas storage bin, thereby realizing continuous and stable gas supply, and improving the reliability and stability of the device.

[0012] In some specific embodiments, an actuator is further included and is arranged in the corresponding liquid taking area of the liquid outlet nozzle assembly. The actuator is electrically connected to the solenoid valve structure to control the opening and closing of the solenoid valve structure. The actuator includes a sound and light induction device or a weight induction device arranged in the liquid taking area. Arranging an actuator in the corresponding liquid taking area of the liquid outlet nozzle assembly and electrically connecting it to the solenoid valve structure can control the opening and closing of the solenoid valve structure through actuators such as a sound and light induction device or a weight induction device, realizing intelligent liquid taking operation and improving the convenience and accuracy of liquid taking.

[0013] In some specific embodiments, the liquid outlet nozzle assembly is installed on a bracket, and the electric liquid taking device is inverted, and the liquid outlet of the liquid outlet nozzle assembly is inclined downward. Fixing the liquid taking device upside down through the bracket, with the liquid outlet nozzle assembly facing downward and the liquid outlet inclined downward, on the one hand, it prevents splashing when pouring the cup and improves the safety of liquid taking; on the other hand, it is convenient to connect with the bracket to match the working conditions, has a small installation space, and adapts to various use scenarios.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] First, convenient and efficient liquid taking operation. Through the liquid outlet assembly and the gas injection assembly that can be interchangeably arranged at both ends of the liquid storage body, and the liquid outlet nozzle assembly with a solenoid valve structure, electric liquid taking operation is realized. Users can easily control the outflow of the liquid by controlling the solenoid valve without complex manual operation, greatly improving the convenience and efficiency of liquid taking;

[0016] II. Good sealing performance and safety. The liquid storage body is a double-layer hollow tank structure. The liquid outlet assembly and the gas injection assembly are connected to the liquid storage body by screw connection or snap connection and are provided with a sealing structure, ensuring the tightness of the entire device, preventing liquid leakage, and improving the safety of use. The two-way on-off valve structure in the middle of the gas-liquid isolation piston is conducted when needed and effectively isolates gas and liquid when not needed, further enhancing the sealing performance. When the access tank is screwed on, the top enters the sealing stage first and then is pressed to connect and use, effectively preventing liquid leakage during disassembly and assembly;

[0017] III. Easy to maintain and clean. The detachable filter screen cover at the bottom of the liquid outlet assembly facilitates filtering impurities in the liquid and is also convenient for cleaning and replacement, improving the quality of liquid extraction. The streamlined pipeline design reduces secondary pollution caused by too long pipelines and is also convenient for daily cleaning, reducing the maintenance cost;

[0018] IV. Intelligent control and strong adaptability. The actuators corresponding to the liquid extraction area in the liquid outlet nozzle assembly, such as sound and light induction devices or weight induction devices, can realize intelligent liquid extraction operations, improving the convenience and accuracy of liquid extraction. The setting of the bracket makes it convenient to install the liquid storage body. The liquid outlet nozzle assembly is set with the nozzle facing down and the liquid outlet inclined downward, which is beneficial to shortening the liquid outlet pipeline, reducing secondary pollution caused by too long pipelines, adapting to various use conditions, and preventing splashing when pouring into a cup. At the same time, the installation space is small, making it convenient to use in different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are included to provide a further understanding of the embodiments and are incorporated into and constitute a part of this specification. The drawings illustrate the embodiments and are used in conjunction with the description to explain the principles of the present invention. Other embodiments and many of the expected advantages of the embodiments will be readily appreciated as they become better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale with each other. The same reference numerals refer to corresponding similar components.

[0020] Figure 1 is a schematic cross-sectional structure diagram of the electric control liquid extraction device according to the first embodiment of the present invention;

[0021] Figure 2 is a schematic cross-sectional structure diagram of the electric control liquid extraction device according to the second embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of the use state of the electric control liquid extraction device according to the first embodiment of the present invention;

[0023] Figure 4 is a schematic diagram of the use state of the electric control liquid extraction device according to the second embodiment of the present invention.

[0024] Meanings of each number in the figure: 1 - liquid storage body, 2 - liquid outlet assembly, 21 - liquid outlet body, 22 - liquid outlet valve core structure, 23 - valve core fixing seat, 24 - filter screen cover, 310 - gas injection assembly I, 311 - one-way air inlet nozzle, 312 - pressure relief valve, 330 - gas injection assembly II, 331 - sealing chamber, 332 - one-way air inlet nozzle, 333 - pressure relief valve, 334 - pressure reducing valve, 335 - gas storage chamber one-way air inlet valve, 4 - gas-liquid isolation piston, 41 - piston body, 42 - sealing ring, 43 - sealing piece, 44 - valve core, 45 - reset elastic body, 5 - liquid outlet nozzle assembly, 51 - solenoid valve structure, 52 - liquid outlet, 53 - liquid outlet nozzle valve core, 6 - cup, 7 - bracket, 8 - actuator. Specific embodiments

[0025] In the following detailed description, reference is made to the accompanying drawings, which form a part of the detailed description and illustrate illustrative specific embodiments in which the present invention may be practiced. In this regard, directional terms such as "top", "bottom", "left", "right", "up", "down", etc. are used with reference to the orientation of the described figures. Since the components of the embodiments may be positioned in several different orientations, the directional terms are used for purposes of illustration and are in no way limiting. It should be understood that other embodiments may be utilized or logical changes may be made without departing from the scope of the present invention. Accordingly, the following detailed description should not be taken in a limiting sense, and the scope of the present invention is defined by the appended claims.

[0026] The present invention provides an electronically controlled liquid extraction device. Figure 1 The structural schematic diagram of the electronically controlled liquid extraction device according to the first embodiment of the present invention is shown, as Figure 1 shown. The electronically controlled liquid extraction device includes four main modular components: a liquid storage body 1, a liquid outlet assembly 2, a gas injection assembly I 310, and a liquid outlet nozzle assembly 5. The liquid outlet assembly 2 and the gas injection assembly 3 are installed at both ends of the liquid outlet body 1, and the installation positions of the liquid outlet assembly 2 and the gas injection assembly 3 can be interchanged to realize the conversion of the internal gas-liquid chamber, which is convenient to use and reduces the damage to the sealing ring of the gas-liquid isolation piston 4 inside the liquid storage body 1 caused by frequent disassembly and assembly. The following is a detailed description of each modular component:

[0027] In a specific embodiment, the liquid storage body 1 is a cylindrical structure with a hollow and straight-through interior. There are functional detachable sealing end caps at both open ends, which can be fixed to the liquid storage body 1 through snap or threaded connections. Inside, there is a reciprocating gas-liquid isolation piston 4 that divides the interior of the liquid storage body 1 into a gas storage chamber and a liquid storage chamber. When the positions of the liquid outlet assembly 2 and the gas injection assembly 3 are swapped, the two chambers are also swapped. The liquid storage body 1 can be a single-layer or double-layer structure tank. The double-layer structure can better protect the inner cavity, prevent jamming and leakage caused by collisions, and also achieve a heat preservation effect. The gas-liquid isolation piston 4 includes a piston body 41, a sealing ring 42, a sealing piece 43, a valve core 44, and a reset elastic body 45. The piston body 41 is a circular plate with a diameter smaller than the inner diameter of the liquid storage body 1, and there is a sealing ring 42 at the outer edge for sealing cooperation with the inner wall of the liquid storage body 1. The sealing piece 43 is located in the middle of the circular plate and has a through hole. The valve core 44 passes through the through hole and is in sealing cooperation in the middle, and there are reset elastic bodies 45 symmetrically at both ends. When storing statically, the valve core 44 is in interference fit with the through hole for sealing. When the liquid extraction is almost completed and the liquid outlet assembly 2 is triggered, the two-way on-off valve conducts, allowing gas to rush into the liquid storage cavity, so that the remaining liquid can be completely taken out at the low position of the liquid extraction port. After the liquid extraction is completed and the end cap is opened, the valve core 44 returns to the sealed state under the action of the reset elastic body 45. Swapping the end caps can realize the conversion of the gas-liquid chambers, which is convenient to use and reduces damage to the piston sealing ring.

[0028] In a specific embodiment, the liquid outlet assembly 2 includes a liquid outlet body 21, a liquid outlet head 22, a switch structure 23, and a liquid outlet valve core structure 24. A liquid outlet cavity is provided in the middle of the liquid outlet body 21 for accommodating the liquid outlet valve core structure 24. A raised connecting portion is formed in the middle of its outer surface, and a through hole communicating with the liquid outlet cavity is provided at the top of the connecting portion. The liquid outlet head 22 is sleeved on the raised connecting portion and is in sealing cooperation with it. The liquid outlet head 22 is hollow inside and a liquid outlet nozzle communicating with the inside is provided on one side. The switch structure 23 is arranged on the liquid outlet head 22. When it acts, it can trigger the liquid outlet valve core structure 24 through the switch valve core 231 to control the conduction or closing of the liquid outlet cavity and the liquid outlet nozzle of the liquid outlet head 22.

[0029] In a specific embodiment, the liquid outlet assembly 2 includes a liquid outlet body 21, a liquid outlet valve core structure 22, a valve core fixing seat 23, and a filter mesh cover 24. A liquid outlet cavity is provided in the middle of the liquid outlet body 21 for accommodating the liquid outlet valve core structure 22. A raised connecting portion is formed in the middle of its outer surface, and a through hole communicating with the liquid outlet cavity is provided at the top of the connecting portion. The liquid outlet nozzle assembly 5 is sleeved on the raised connecting portion and is in sealing cooperation with it. An electromagnetic valve structure 51, a liquid outlet 52, and a liquid outlet nozzle valve core 53 are provided on the liquid outlet nozzle assembly 5. Among them, when the liquid outlet nozzle assembly 5 is in cooperation with the raised connecting portion, the liquid outlet nozzle valve core 53 pushes open the liquid storage valve core structure 22, so that the liquid outlet cavity is communicated with the internal channel of the liquid outlet nozzle assembly 5, and the electromagnetic valve structure 51 controls the conduction or closing of the internal channel and the liquid outlet 52. The pipeline of this liquid outlet structure is streamlined, which can reduce secondary pollution caused by too long pipelines and is convenient for daily cleaning.

[0030] In a specific embodiment, the liquid outlet valve core structure 22 includes a liquid outlet valve core, a shaft sleeve, a return spring, and a sealing sleeve. The valve core fixing seat 23 is fixedly arranged on the lower end surface of the liquid outlet cavity, and its surface is hollowed out with a plurality of channels communicating the liquid outlet cavity and the liquid storage bin. The liquid outlet valve core is fixedly arranged in the middle of the valve core fixing seat 23 (the cooperation can be achieved by means of threaded connection). A valve core cavity for accommodating the liquid outlet valve core is arranged inside the shaft sleeve. The return spring is arranged between the liquid outlet valve core and the valve core cavity. The sealing sleeve covers the connection between the liquid outlet valve core and the shaft sleeve, so that the liquid outlet valve core, the return spring, and the valve core cavity of the shaft sleeve are separated from the flow channel to avoid affecting the quality of the internal liquid storage. A filter mesh cover 24 is detachably arranged at the bottom of the liquid outlet assembly 2. One end of the liquid outlet valve core extends out of the bottom of the valve core fixing seat 23, and the filter mesh cover 24 is detachably matched with one end of the liquid outlet valve core (the connection can also be achieved by means of threaded connection, which is convenient for disassembly, installation, and maintenance). The filter mesh cover 24 can filter impurities in the liquid, ensure the purity of the outflowing liquid, and prevent the fluid from carrying foreign objects to cause the sealing failure of the internal valve structure.

[0031] In a specific embodiment, the gas injection assembly I 310 is a direct gas supply inflation structure, including a one-way air inlet nozzle 311 and a pressure relief valve 312. The one-way air inlet nozzle 311 is connected to an external gas injection device through an external gas injection joint to provide gas for the gas storage bin, and the pressure relief valve 312 plays a safety protection role. This direct gas supply structure can also use an external gas injection device to appropriately pressurize and store gas in the pressure chamber without connecting an intake pipeline to meet the demand for liquid extraction in a short time.

[0032] In a specific embodiment, the solenoid valve structure 51 of the liquid outlet nozzle assembly 5 is connected to an actuating element through a wire. The actuating element is used to control the opening and closing of the solenoid valve structure 51, and can be a device such as a sound and light induction device or a weight induction device, etc., which can realize automatic liquid extraction operation and is convenient for the user to operate.

[0033] Figure 2 The schematic diagram of the electronically controlled liquid extraction device according to the second embodiment of the present invention is shown, as Figure 2 shown. The main structure in this embodiment is the same as that in Figure 1Similar, the difference is that the gas injection component II 330 in this embodiment adopts a gas storage structure. In addition to including a one-way air inlet nozzle 331 and a pressure relief valve 333, it also has a sealed chamber 331. Inside the sealed chamber 331, a pressure reducing valve 334 and a gas storage chamber one-way air inlet valve 335 are provided. During use, first inject gas with a relatively high pressure through the one-way air inlet nozzle 332. The gas adjusted by the pressure reducing valve 334 enters the gas storage chamber through the gas storage chamber one-way air inlet valve 335. When the gas storage chamber reaches the preset pressure, stop the input. Continuing to inject gas into the sealed chamber 331 can achieve the purpose of pressure accumulation. Without an external pipeline, the sealed chamber 331 can continuously supply stable pressure gas to the gas storage chamber, increasing the application scenarios. Due to the gas-liquid separation function of the gas-liquid isolation piston 4, clean air can be input into the gas storage chamber. If higher preservation requirements are needed, inert gases such as carbon dioxide, nitrogen, or argon, or their mixed gases can be used. Safety pressure relief valves are provided on both of the above two external gas supply structures to avoid potential safety hazards caused by excessive inflation pressure.

[0034] Continue to refer to Figure 3 , Figure 3 shows a schematic diagram of the use state of the electric control liquid extraction device according to the first embodiment of the present invention. As Figure 3 shown, the liquid outlet nozzle assembly 5 is installed on a vertical plane through a fixed bracket. The overall electric control liquid extraction device is in an inverted state. In this embodiment, corresponding to Figure 1 the gas injection component I 310 of the embodiment, it is a direct supply type inflation structure. The gas injection component I 310 injects gas into the gas storage chamber through a gas pipe connected to an external inflation device. The liquid outlet of the liquid outlet nozzle assembly 5 is inclined downward. A cup 6 is placed on the liquid extraction area corresponding to the liquid outlet to receive the liquid in the tank. The solenoid valve structure 51 in the liquid outlet nozzle assembly 5 can control the liquid extraction operation by connecting to a sound and light induction device or a weight induction device set on the liquid extraction area. When the user places the cup 6 on the liquid extraction area, the solenoid valve structure 51 automatically opens. The liquid in the liquid storage chamber is ejected from the liquid outlet towards the cup 6 under the action of the air pressure in the gas storage chamber. After the liquid extraction is completed and the cup 6 is picked up, the solenoid valve structure 51 automatically closes, realizing the electric control automatic liquid extraction operation.

[0035] Figure 4 shows a schematic diagram of the use state of the electric control liquid extraction device according to the second embodiment of the present invention. As Figure 4 shown, the liquid outlet nozzle assembly 5 is arranged on a desktop bracket 7. This bracket 7 is similar to a faucet structure. The overall electric control liquid extraction device is also in an inverted state. The actuator 8 is arranged inside the column of the bracket 7. In this embodiment, corresponding to Figure 2The gas injection component II 330 of the embodiment is a gas storage structure. During use, high-pressure gas is first injected into the sealed chamber 331. The gas adjusted by the pressure reducing valve 334 enters the gas storage chamber through the one-way intake valve 335 of the gas storage chamber. After the gas storage chamber reaches the preset pressure, the input stops. Continuing to inject gas into the sealed chamber 331 can achieve the purpose of pressure storage. Without connecting external pipelines, the sealed chamber 331 can continuously supply stable pressure gas to the gas storage chamber. The specific liquid extraction operation is the same as that in the foregoing Figure 3 embodiment and will not be elaborated here.

[0036] During the specific installation operation, after ensuring that the liquid outlet component and the liquid outlet nozzle component are in a sealed state when they cooperate, the corresponding gas injection operation is carried out to prevent liquid leakage during the disassembly and assembly process and isolate the internal liquid outlet pipeline and the electromagnetic actuator. The electric control liquid extraction device of the present application can realize the liquid extraction operation through electric control, which is convenient and fast. The internal pipeline of the device is streamlined, which can reduce secondary pollution caused by too long pipelines. At the same time, it is convenient for daily cleaning, has a small installation space, and is convenient for connecting brackets to meet different usage conditions.

[0037] Obviously, those skilled in the art can make various modifications and changes to the embodiments of the present invention without departing from the spirit and scope of the present invention. In this way, if these modifications and changes are within the scope of the claims of the present invention and their equivalent forms, the present invention also aims to cover these modifications and changes. The word "comprising" does not exclude the presence of other elements or steps not listed in the claims. The simple fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. Any reference signs in the claims should not be construed as limiting the scope.

Claims

1. An electronically controlled liquid extraction device, characterized in that, It includes a liquid storage body, and a liquid outlet assembly and an air injection assembly which are interchangeably arranged at both ends of the liquid storage body. An air-liquid isolation piston is arranged inside the liquid storage body to correspondingly divide the inside of the liquid storage body into a liquid storage chamber and an air storage chamber. Injecting gas into the inflation cavity by the air injection assembly can push the piston to make the liquid flow out from the liquid outlet assembly. It also includes a liquid outlet nozzle assembly which is detachably matched with the liquid outlet assembly, and an electromagnetic valve structure for controlling the opening and closing of the liquid outlet nozzle is arranged on the liquid outlet nozzle assembly.

2. The electro-controlled liquid extraction device according to claim 1, characterized in that, The liquid storage body is a double-layer hollow tank structure. The matching modes of the liquid outlet assembly and the air injection assembly with the liquid storage body include threaded connection or snap connection, and a sealing structure is arranged at the matching position.

3. An electro-controlled liquid extraction device according to claim 1, characterized in that, A two-way on-off valve structure is arranged in the middle of the air-liquid isolation piston. The two-way on-off valve structure includes a valve core, a sealing sheet and a reset elastic body. A through hole is arranged in the middle of the sealing sheet. The valve core passes through the through hole and the middle of the valve core is hermetically matched with the through hole. A pair of the reset elastic bodies are symmetrically arranged at both ends of the valve core. When any end of the valve core triggers the liquid outlet assembly, the two-way on-off valve is conducted.

4. An electro-controlled liquid extraction device according to claim 1, characterized in that, The liquid outlet assembly includes a liquid outlet body and a liquid outlet valve core structure. A liquid outlet cavity for accommodating the liquid outlet valve core structure is arranged in the middle of the liquid outlet body, and a convex connecting part is formed in the middle of the outer surface of the liquid outlet body. The liquid outlet nozzle assembly is hermetically matched and connected with the convex connecting part. The liquid outlet valve core structure includes a valve core fixing seat, a liquid outlet valve core, a shaft sleeve, a reset spring and a sealing sleeve. The valve core fixing seat is fixedly arranged on the lower end surface of the liquid outlet cavity. A plurality of channels communicating the liquid outlet cavity and the liquid storage cavity are arranged in a hollow manner on the surface of the valve core fixing seat. The liquid outlet valve core is fixedly arranged in the middle of the valve core fixing seat. A valve core cavity for accommodating the liquid outlet valve core is arranged inside the shaft sleeve. The reset spring is arranged between the liquid outlet valve core and the valve core cavity. The sealing sleeve covers the connection part between the liquid outlet valve core and the shaft sleeve.

5. An electric liquid extraction device according to claim 4, characterized in that, A filter mesh cover is detachably arranged at the bottom of the liquid outlet assembly. One end of the liquid outlet valve core extends out of the bottom of the valve core fixing seat, and the filter mesh cover is detachably matched with one end of the liquid outlet valve core.

6. The electro-controlled liquid extraction device according to claim 1, wherein, The air injection assembly is an external air supply structure which is connected with an external inflation device. The external air supply structure includes a direct air supply structure or a gas storage structure.

7. The electro-controlled liquid extraction device according to claim 6, characterized in that, The direct air supply structure is provided with a one-way air inlet nozzle and a pressure relief valve on the air injection assembly. The one-way air inlet nozzle is connected with the external inflation device through a gas pipe.

8. The electro-controlled liquid extraction device according to claim 6, wherein The gas storage structure further includes a sealed chamber inside the air injection assembly. A one-way air inlet nozzle, a pressure relief valve, a pressure reducing valve and a check valve are arranged in the sealed chamber. The one-way air inlet nozzle and the pressure relief valve are used for communicating with the outside of the air injection assembly. After the external inflation device injects gas, it sequentially passes through the pressure reducing valve and the check valve and enters the air storage chamber. After reaching the preset pressure, it continues to pressurize and store pressure in the sealed chamber, and then can continuously supply stable pressure to the air storage chamber without connecting an external pipeline.

9. The electro-controlled liquid extraction device according to claim 1, wherein It further includes an actuating element disposed in the corresponding liquid-taking area of the liquid outlet nozzle assembly. The actuating element is electrically connected to the solenoid valve structure to control the opening and closing of the solenoid valve structure. The actuating element includes an acoustic-optic induction device or a weight induction device disposed in the liquid-taking area.

10. The electro-controlled liquid extraction device according to claim 1, characterized in that, It further includes a bracket. The liquid outlet nozzle assembly is mounted on the bracket. The electric liquid-taking device is inverted, and the liquid outlet of the liquid outlet nozzle assembly is inclined downward.

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