A device for transferring a specified amount of liquid
By controlling the pump's running time with a timing module and monitoring the liquid level with a level sensor, the problems of poor compatibility with the source container and high cost of flow meters in existing technologies are solved, realizing a low-cost and accurate liquid transfer device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LISHUI BOYUAN TECH CO LTD
- Filing Date
- 2025-08-26
- Publication Date
- 2026-06-23
Smart Images

Figure CN224394590U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of liquid transfer equipment, and more specifically, relates to a device for transferring a specified amount of liquid. Background Technology
[0002] To transfer a certain amount of liquid (including water, gasoline, engine oil, medicine, chemical agents, etc.) from a source container to a sensorless target container (e.g., an oil storage tank in a car) without supervision, existing technologies typically design a target container with a capacity that is a multiple of the source container's capacity. In this case, only the liquid from several source containers needs to be transferred to complete the task. However, this method has drawbacks: different target containers require different source containers, resulting in poor source container compatibility and high production line costs for multiple models. Other methods use flow meters, but these are expensive. To address these issues, it is necessary to provide a device that is structurally simple, portable, low-cost, and capable of stably transferring a specified amount of liquid to meet the needs of different application scenarios. Utility Model Content
[0003] The technical problem to be solved by this invention is to provide a device for transferring a specified amount of liquid, which can achieve the transfer of a specified amount of liquid.
[0004] This utility model discloses a device for transferring a specified amount of liquid, comprising a first controller, a source container, a lid assembly, and a pump. The source container has a cavity for containing liquid and an inlet / outlet communicating with the outside. The lid assembly is detachably connected to the inlet / outlet of the source container and communicates with the cavity of the source container. The input end of the pump is communicated with the lid assembly and communicates with the cavity of the source container through the lid assembly. The output end of the pump is used to communicate with a target container of an external device.
[0005] The first controller is electrically connected to the pump. The first controller is equipped with a timing module, which controls the pump's running time to transfer a specified amount of liquid.
[0006] As a further improvement of this utility model, the lid assembly includes a cap, the bottom of which is fixedly provided with a joint, and the joint is hollowly provided with a chamber, which communicates with the cavity of the source container to form a cavity.
[0007] As a further improvement of this utility model, the lid assembly also includes a liquid level sensor and a second controller. The lower end of the liquid level sensor extends through the lid into the cavity of the source container to monitor the liquid level information in the cavity of the source container.
[0008] The liquid level sensor is electrically connected to the second controller and is driven and controlled by the second controller.
[0009] As a further improvement of this utility model, the top of the lid assembly is provided with an oil nozzle; the input end of the oil nozzle is provided with a first connecting pipe and is connected to the cavity through the first connecting pipe; the output end of the oil nozzle is provided with a connecting pipe and is connected to the input end of the pump through the connecting pipe.
[0010] As a further improvement of this utility model, the connecting pipeline includes a third connecting pipe, a tee pipe and a fourth connecting pipe connected in sequence, and the tee pipe includes a first connecting port, a second connecting port and a third connecting port.
[0011] The third connecting pipe is installed and connected to the first connecting port of the tee pipe, and a first valve is installed between the third connecting pipe and the tee pipe; the fourth connecting pipe is installed and connected to the second connecting port of the tee pipe; the end of the fourth connecting pipe away from the tee pipe is installed and connected to the first connecting end of the pump.
[0012] The third connection port of the tee pipe 54 is connected to a sixth connecting pipe for connection with an externally installed transition container. A second valve is installed on the sixth connecting pipe.
[0013] Both the first and second valves are one-way valves used to restrict the flow of liquid.
[0014] As a further improvement of this utility model, it also includes a cover and a handle; the handle is fixedly disposed on the top of the source container; the cover is disposed on the top of the source container and forms an opening at the location of the handle for easy gripping.
[0015] As a further improvement of this utility model, the cover includes a first cover and a second cover arranged side by side, the pump is disposed inside the first cover, and the first controller is disposed inside the second cover.
[0016] As a further improvement of this utility model, the adjacent ends of the first cover and the second cover are provided with through grooves, and the two through grooves together form an opening of the hollow structure.
[0017] As a further improvement of this utility model, the adjacent ends of the first cover and the second cover with through grooves are detachably connected and mounted on both ends of the handle, and installed and connected to both ends of the handle.
[0018] As a further improvement of this utility model, the lid assembly is threadedly connected to the inlet and outlet of the source container via a joint.
[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0020] By using a timing module in conjunction with the pump's rated flow rate, liquid transfer volume control based on running time can be achieved. Without the need to install a flow sensor, a specified volume of liquid can be accurately transferred with a simplified structure, reducing manufacturing and maintenance costs.
[0021] Users only need to preset the pump's running time to complete a single transfer of a specified amount of liquid, reducing manual intervention and making it easy to operate. It is suitable for various scenarios such as laboratories, food processing, and industrial additives.
[0022] Only one source container needs to be set, and there is no need to match source containers of different capacities according to the liquid transfer requirements. It is also suitable for target containers of various volumes.
[0023] By replacing precision detection components such as flow meters with time-controlled methods, manufacturing costs are reduced and maintenance is more convenient. Attached Figure Description
[0024] Figure 1 This is a perspective view of the device of this utility model;
[0025] Figure 2 This is a schematic diagram of the device of this utility model with the cover removed;
[0026] Figure 3 This is a cross-sectional view of the device of this utility model;
[0027] Figure 4 This is a schematic diagram of the device drive and conveying path structure of this utility model.
[0028] Explanation of the labels in the diagram:
[0029] 1. Source container; 11. Connecting post; 2. Lid assembly; 21. Cover; 22. Connecting post; 23. Mounting slot; 24. Liquid level sensor; 241. Float; 3. Pump; 31. First connecting end; 32. Second connecting end; 4. Nozzle; 51. First connecting pipe; 52. Second connecting pipe; 53. Third connecting pipe; 54. T-connector; 55. Fourth connecting pipe; 56. Fifth connecting pipe; 57. First valve; 58. Second valve; 59. First filter element; 6. Cover; 61. First cover; 62. Second cover; 7. Handle. Detailed Implementation
[0030] The present invention will be further described in detail below with reference to the embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.
[0031] Specific Implementation Example 1: Please refer to Figure 1 - Figure 4 A device for transferring a specified amount of liquid includes a source container 1 and a pump 3. The source container 1 is hollow and has a cavity. An inlet and outlet are provided through the top of the source container 1. A hollow connecting column 11 is fixedly provided on the outer periphery of the top of the inlet and outlet. A lid assembly 2 is detachably provided on the connecting column 11.
[0032] The outer periphery of the lower end of the lid assembly 2 is threadedly connected to the inner wall of the connecting post 11.
[0033] The lid assembly 2 includes a cap 21; a hollow connecting post 22 is fixedly provided at the bottom of the cap 21; the connecting post 22 is surrounded by threads that match the threads surrounding the connecting post 11, and the connecting post 22 and the connecting post 11 are threadedly connected; the connecting post 22 is hollow and has a cavity, and the bottom of the connecting post 22 is open through to connect the cavity of the connecting post 22 with the cavity inside the source container 1 to form a cavity.
[0034] A nozzle 4 is fixedly installed on the top of the cap 21. A first connecting pipe 51 is fixedly installed at the input end of the nozzle 4. The end of the first connecting pipe 51 away from the nozzle 4 extends through the cap 21 and into the cavity. A second connecting pipe 52 is fixedly installed at the end of the first connecting pipe 51 away from the nozzle 4. The end of the second connecting pipe 52 away from the first connecting pipe 51 extends into the bottom of the cavity of the source container 1 to transfer the liquid inside the source container 1 to the outside. A third connecting pipe 53 is fixedly installed at the output end of the nozzle 4. A three-way pipe 54 is installed at the end of the third connecting pipe 53 away from the nozzle 4. The three-way pipe 54 includes a first connecting port, a second connecting port, and a third connecting port.
[0035] The third connecting pipe 53 is fixedly connected to the first connecting port of the tee pipe 54, and a first valve 57 is installed between the third connecting pipe 53 and the tee pipe 54; a fourth connecting pipe 55 is fixedly connected to the second connecting port of the tee pipe 54, and the end of the fourth connecting pipe 55 away from the tee pipe 54 is installed and connected to the first connecting end 31 of the pump 3; a fifth connecting pipe 56 is fixedly connected to the second connecting end 32 of the pump 3 away from the first connecting end 31; the end of the fifth connecting pipe 56 away from the pump 3 is used to connect to the target container for external liquid transfer.
[0036] The third connection port of the tee pipe 54 is connected to a sixth connecting pipe for connection with an externally installed transition container. A second valve 58 is installed on the sixth connecting pipe to control the flow direction of the liquid.
[0037] Preferably, pump 3 is a bidirectional pump capable of bidirectional fluid delivery.
[0038] Preferably, both the first valve 57 and the second valve 58 are one-way valves to restrict the flow of liquid.
[0039] Optionally, filters 59 are installed on both the third connecting pipe 53 and the fifth connecting pipe 56 to filter the passing liquid.
[0040] The top of the cover 21 is fixedly provided with an installation groove 23, and the top of the installation groove 23 is covered with a cover plate;
[0041] The lid assembly 2 also includes a liquid level sensor 24 and a second controller. The liquid level sensor 24 includes an electron tube, one end of which is fitted with a float 241 and penetrates through the cover 21. Together with the float 241, it extends into the cavity inside the source container 1. The top of the liquid level sensor 24 is installed in the mounting groove 23 on the top of the cover 21. The liquid level sensor 24 is electrically connected to the second controller and is driven and controlled by the second controller. The second controller is embedded in the mounting groove 23.
[0042] The liquid level sensor 24 is existing technology and will not be described in detail here.
[0043] The basic working principle of the liquid level sensor 24: the change in liquid level causes the float 241 to slide up and down along the electron tube. At the same time, the magnet inside the float 241 drives the reed switch set at different positions inside the electron tube, causing the electronic signal of the internal circuit to change instantly. This change is then fed back to the first controller set externally through the wire.
[0044] The device also includes a cover 6, which covers the top of the source container 1; the lid assembly 2 is disposed independently of the cover 6.
[0045] A handle 7 is fixedly provided on the top of the source container 1; the cover 6 includes a first cover 61 and a second cover 62; the first cover 61 and the second cover 62 are arranged side by side with each other, and the adjacent ends of the first cover 61 and the second cover 62 are detachably connected, and the connection between the two is fixed on the handle 7.
[0046] Specifically, one end of the first cover 61 is placed over the top of both ends of the handle 7, and one end of the second cover 62 is placed over the top of the connection between the first cover 61 and the handle 7. The first cover 61 and the second cover 62 have through grooves at the ends facing the handle 7. The two through grooves together form an open structure to expose the handle 7 so that the operator can easily operate the handle 7.
[0047] Pump 3 is installed inside the first cover 61.
[0048] The device also includes a first controller, which is installed inside the second cover 62. The pump 3 is electrically connected to the first controller and is driven and controlled by the first controller. The first controller is equipped with a timing module to monitor the liquid transfer time.
[0049] The first controller and the second controller are electrically connected and the liquid level sensor 24 converts the liquid level signal into an electrical signal and transmits it to the second controller via a wire. The second controller then feeds it back to the first controller.
[0050] Working principle:
[0051] The device achieves precise control of the transfer volume during a single liquid transfer process through the cooperation of the source container 1, the lid assembly 2, the liquid level sensor 24, the pump 3, and two controllers.
[0052] The source container 1 is pre-stored with liquid to be transferred. The lid assembly 2 is installed at the top inlet and outlet of the source container 1. The pump 3, the oil nozzle 4 on the cover 21 and the connecting pipes connected to the pump 3 and the oil nozzle 4 constitute the liquid delivery path. The pump 3 is connected to the corresponding container through the connecting pipe.
[0053] Before use, empty the liquid in the target container, install and connect the fifth connecting pipe 56 to the target container, start the pump 3, and pass the liquid in the target container through the fifth connecting pipe 56, the pump 3, the fourth connecting pipe 55, the third connecting port of the three-way pipe 54, and then into the sixth connecting pipe. The liquid in the target container is then transferred to the externally installed transition container through the sixth connecting pipe.
[0054] After the liquid in the target container is emptied, the first controller presets the running time of pump 3. Then, the first controller drives pump 3 to start and changes the running direction of pump 3. Pump 3 draws liquid from the cavity of source container 1 through connecting pipe and oil nozzle 4. After passing through the third connecting pipe 53, tee pipe 54, fourth connecting pipe 55, pump 3, and fifth connecting pipe 56 in sequence, it is finally delivered to the target container that is installed and connected to the fifth connecting pipe 56.
[0055] The first controller runs pump 3 according to the preset duration of the timing module, and automatically turns off the power of pump 3 when the timing ends, thereby realizing the one-time transfer of a predetermined volume of liquid; in a very short time, the liquid transfer speed of pump 3 is basically stable, so the amount of liquid transferred within the predetermined time is certain, thus realizing the quantitative transfer of liquid.
[0056] The liquid level sensor 24 is installed on the lid assembly 2. Its electron tube and float 241 extend into the cavity of the source container 1, which can detect the liquid level height in the cavity in real time. The float 241 moves up and down along the electron tube as the liquid level changes, and drives the reed switch at different positions in the electron tube to operate through the magnet inside the float 241, thereby converting the liquid level signal into an electrical signal and transmitting it to the second controller through the wire.
[0057] By utilizing the flow stability of pump 3 within a short period of time, accurate metering and transfer without the need for a real-time flow meter are achieved, reducing structural complexity and cost while improving transfer accuracy and ease of operation.
[0058] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto; any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and its improved concept, should be covered within the scope of protection of this application.
Claims
1. An apparatus for transferring a specified amount of liquid, characterized in that: The device includes a first controller, a source container (1), a lid assembly (2), and a pump (3). The source container (1) has a cavity for containing liquid and an inlet / outlet that communicates with the outside. The lid assembly (2) is detachably connected to the inlet / outlet of the source container (1) and communicates with the cavity of the source container (1). The input end of the pump (3) is connected to the lid assembly (2) and communicates with the cavity of the source container (1) through the lid assembly (2). The output end of the pump (3) is used to communicate with the target container of an external device. The first controller is electrically connected to the pump (3). The first controller is equipped with a timing module, which controls the running time of the pump (3) to transfer a specified amount of liquid.
2. The apparatus for transferring a specified amount of liquid according to claim 1, characterized in that: The lid assembly (2) includes a cap (21), the bottom of which is fixedly provided with a joint, and the joint is hollowly provided with a chamber, which is connected to the cavity of the source container (1) to form a cavity.
3. The apparatus for transferring a specified amount of liquid according to claim 2, characterized in that: The lid assembly (2) also includes a liquid level sensor (24) and a second controller; the lower end of the liquid level sensor (24) extends through the lid (21) into the cavity of the source container (1) to monitor the liquid level information in the cavity of the source container (1); The liquid level sensor (24) is electrically connected to the second controller and is driven and controlled by the second controller.
4. The apparatus for transferring a specified amount of liquid according to claim 1, characterized in that: The top of the lid assembly (2) is provided with an oil nozzle (4); the input end of the oil nozzle (4) is provided with a first connecting pipe (51) and is connected to the cavity through the first connecting pipe (51); the output end of the oil nozzle (4) is provided with a connecting pipe and is connected to the input end of the pump (3) through the connecting pipe.
5. The apparatus for transferring a specified amount of liquid according to claim 4, characterized in that: The connecting pipeline includes a third connecting pipe (53), a tee pipe (54) and a fourth connecting pipe (55) connected in sequence. The tee pipe (54) includes a first connecting port, a second connecting port and a third connecting port. The third connecting pipe (53) is installed and connected to the first connecting port of the tee pipe (54), and a first valve (57) is installed between the third connecting pipe (53) and the tee pipe (54); the fourth connecting pipe (55) is installed and connected to the second connecting port of the tee pipe (54); the end of the fourth connecting pipe (55) away from the tee pipe (54) is installed and connected to the first connecting end (31) of the pump (3); The third connection of the tee pipe (54) is connected to a sixth connecting pipe for connection with an externally installed transition container. A second valve (58) is installed on the sixth connecting pipe. Both the first valve (57) and the second valve (58) are one-way valves used to restrict the flow of liquid.
6. The apparatus for transferring a specified amount of liquid according to claim 1, characterized in that: It also includes a cover (6) and a handle (7); the handle (7) is fixedly set on the top of the source container (1); the cover (6) covers the top of the source container (1) and forms an opening at the location of the handle (7) for easy gripping.
7. The apparatus for transferring a specified amount of liquid according to claim 6, characterized in that: The cover (6) includes a first cover (61) and a second cover (62) arranged side by side, with the pump (3) located inside the first cover (61) and the first controller located inside the second cover (62).
8. The apparatus for transferring a specified amount of liquid according to claim 7, characterized in that: Both the first cover (61) and the second cover (62) have through grooves at their adjacent ends, and the two through grooves together form an opening of a hollow structure.
9. The apparatus for transferring a specified amount of liquid according to claim 7, characterized in that: The first cover (61) and the second cover (62) have adjacent ends with through slots that can be detachably connected and mounted on both ends of the handle (7), and are installed and connected to both ends of the handle (7).
10. The apparatus for transferring a specified amount of liquid according to claim 2, characterized in that: The lid assembly (2) is connected to the inlet and outlet threads of the source container (1) via a joint.