Device for dispensing liquid from a container and its extraction tube

Abstract

The present invention provides a device for dispensing liquid from a container, comprising: a pressure pump, an extraction tube and a delivery tube, wherein the input end of the extraction tube includes at least a first input port and a second input port, and the position of the first input port in the container is adapted to be arranged to allow extraction of all available liquid in the container, and the position of the second input port in the container is adapted to be arranged to have a liquid level higher than that of the first input port. The present invention also provides an extraction tube for dispensing liquid from a container. The liquid dispensing device according to the present invention realizes a residual material alarm through the mechanical structure of the extraction tube itself, has a low implementation cost and good reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid dispensing, and particularly to a liquid dispensing device with a reminder function for remaining materials and a extraction tube for the liquid dispensing device. Background Art

[0002] In liquid dispensing devices such as beverage machines, pressure pumps such as air pumps or hydraulic pumps are usually used to extract liquids such as drinks in a drum through a pipeline and discharge them from a nozzle. Due to application requirements such as store brands, it is often necessary to remind the operator of the remaining materials in the drum to make preparations for replenishing materials in advance.

[0003] Currently, liquid dispensing devices on the market generally use electronic monitoring methods to achieve replenishment reminders. For example, a flow switch is installed in the liquid output pipe to feedback the volume of the outflowing liquid, and the remaining volume is calculated by subtracting the outflow volume from the total volume in the drum, thereby completing the monitoring of the remaining volume. Another example is to place level sensors such as probes and float balls inside the drum, or infrared and acoustic level sensors on the outer wall of the drum, and when the remaining materials reach the warning level, a red light or an alarm is used for reminder.

[0004] The above existing solutions are costly and unreliable because they use sensitive electronic components and require expensive controllers. In addition, the design components of the existing solutions are numerous, the technical support and maintenance requirements are high, and food safety risks are easily caused. Summary of the Invention

[0005] The present invention provides a device for dispensing liquid from a container, including: a pressure pump adapted to drive the liquid to flow in a conduit; an extraction tube having an input end and an output end, wherein the input end is adapted to extend into the inner cavity of the container, and the output end is connected to the inlet of the pressure pump to extract liquid from the container under the drive of the pressure pump; a delivery tube connected to the outlet of the pressure pump to output the extracted liquid; the input end of the extraction tube includes at least a first input port and a second input port, wherein the position of the first input port in the container is adapted to be arranged to allow extraction of all available liquid in the container, and the position of the second input port in the container is adapted to be arranged to have a liquid level higher than that of the first input port.

[0006] Advantageously, the extraction tube includes a main tube and a first branch tube, one end of the main tube is connected to the inlet of the pressure pump, and the other end forms the first input port, and one end of the first branch tube is connected to the main tube, and the other end forms the second input port.

[0007] Advantageously, the extraction pipe includes a main pipe, a first branch pipe, and a second branch pipe. One end of the main pipe is connected to the inlet of the pressure pump, and the other end is connected to a pipe joint. One end of the first branch pipe is connected to the pipe joint, and the other end forms the first input port. One end of the second branch pipe is connected to the pipe joint, and the other end forms the second input port.

[0008] Advantageously, the first branch pipe and the second branch pipe are arranged side by side and connected to the main pipe through a pipe joint.

[0009] Advantageously, the second branch pipe is sleeved on the outer periphery of the first branch pipe, and there is a gap between the first branch pipe and the second branch pipe that allows liquid and gas to flow through.

[0010] Advantageously, the input end of the extraction pipe further includes a third input port, and the position of the third input port in the container is adapted to be arranged at a liquid level higher than that of the second input port (24).

[0011] Advantageously, the extraction pipe includes a main pipe, a first branch pipe, and a second branch pipe. One end of the main pipe is connected to the inlet of the pressure pump, and the other end forms the first input port. One end of the first branch pipe is connected to the main pipe, and the other end forms the second input port. One end of the second branch pipe communicates with the main pipe, and the other end forms the third input port).

[0012] The present invention also provides an extraction pipe for distributing liquid from a container, including: an input end adapted to be inserted into the inner cavity of the container and at least including a first input port and a second input port. The position of the first input port in the container is adapted to be arranged to allow extraction of all available liquid in the container, and the position of the second input port in the container is adapted to be arranged at a liquid level higher than that of the first input port; an output end adapted to be connected to the inlet of a pressure pump to extract liquid from the container under the drive of the pressure pump.

[0013] Advantageously, the extraction pipe includes a main pipe, a first branch pipe, and a second branch pipe. One end of the main pipe is adapted to be connected to the inlet of the pressure pump, and the other end is connected to a pipe joint. One end of the first branch pipe is connected to the pipe joint, and the other end forms the first input port. One end of the second branch pipe is connected to the pipe joint, and the other end forms the second input port.

[0014] Advantageously, the input end of the extraction pipe further includes a third input port, and the position of the third input port in the container is adapted to be arranged at a liquid level higher than that of the second input port.

[0015] The liquid dispensing device according to the present invention realizes the surplus material alarm through the mechanical structure of the extraction tube itself, has a low implementation cost, and has good reliability. Description of the Drawings

[0016] Other details and advantages of the present invention will be further described in detail below with reference to the drawings, where:

[0017] Figure 1 Fig. 9 is a first embodiment of a device for dispensing liquid from a container according to the present invention, in which a first extraction tube according to the present invention is used;

[0018] Figure 2 Fig. 13 is a second embodiment of the device according to the present invention, in which a second extraction tube according to the present invention is used;

[0019] Figure 3 Fig. 17 is a third embodiment of the device according to the present invention, in which a third extraction tube according to the present invention is used;

[0020] Figure 4 Fig. 21 is a fourth embodiment of the device according to the present invention, in which a fourth extraction tube according to the present invention is used;

[0021] Figure 5 Fig. 25 is a fifth embodiment of the device according to the present invention, in which a fifth extraction tube according to the present invention is used;

[0022] Figure 6 Fig. 29 is a sixth embodiment of the device according to the present invention, in which a sixth extraction tube according to the present invention is used.

[0023] The content shown in the above drawings is only for illustration and schematic purposes, and is not drawn strictly to scale, nor are all the components or details related to the specific use environment drawn completely. After understanding the principles and concepts of the present invention, those skilled in the art will be able to think of the relevant technical content well known in the art that needs to be added for the specific implementation of the present invention in a specific use environment. Detailed Description of the Invention

[0024] In the following description, the terms "first", "second", etc. may be used without any intention of limiting any order. Their purpose is only to distinguish each independent component, part, structure, element, etc., and these independent components, parts, structures, elements may be the same, similar or different. At the same time, the descriptions of directions such as "up", "down", "inside", "outside", "left", "right", "radial", "axial", etc. that may be used in the following description are only for convenience of description and will not form any limitation to the technical solution of the invention unless there is a clear description.

[0025] Figure 1Schematic diagram of the principle of a device for dispensing liquid from container 80 according to the present invention. In the present invention, the "container" is used to generally describe a container suitable for storing liquid, including sealed and unsealed containers, and can be in various shapes such as tanks, barrels, boxes, bottles, etc. The device according to the present invention is also referred to as a "liquid dispensing device" and is used to take out a quantitative amount of liquid from the container.

[0026] As shown in the figure, the liquid dispensing device includes a pressure pump 10, which is suitable for providing power for the flow of liquid, and can be selected according to requirements such as the application occasion, for example, a pressure pump powered by an air compressor, etc. The inlet of the pressure pump 10 is connected to the extraction pipe 20, and the extraction pipe 20 extends into the container 80, so that the liquid in the container is pumped out via the extraction pipe under the action of the pressure pump. The outlet of the pressure pump 10 is connected to the delivery pipe 90 to output the liquid extracted from the container. A valve, for example, can be provided on the pipeline of the delivery pipe 90. In addition to controlling the opening and closing of the delivery flow path, the valve can also be set to be linked with the pressure pump, so that the pressure pump is started while the flow path is opened, and the pressure pump is stopped while the flow path is closed.

[0027] The extraction pipe 20 is set as a continuous conduit in Figure 1 which, with both ends being the input end 22 and the output end 21 respectively. The input end 22 is suitable for extending into the inner cavity of the container 80, and the output end 21 is suitable for connecting to the inlet of the pressure pump 10 to extract liquid from the container under the drive of the pressure pump. In addition to the end port of the input end 22 serving as the first input port 23, another opening is provided at a certain distance from the end as the second input port 24. After the extraction pipe is positioned in the container 80, the position h1 of the first input port 23 in the container is almost close to the bottom of the tank, so as to allow almost all available liquid in the container to be extracted, while the position h2 of the second input port 24 in the container has a liquid level higher than that of the first input port 23. The position of the second input port 24 is set to correspond to the state where there is not much remaining liquid in the container and replenishment is needed at any time.

[0028] During the normal liquid dispensing process, when the liquid level in the container 80 is higher than the position h2 of the second input port, the liquid can enter the extraction pipe 20 from both the first input port 23 and the second input port 24 at the same time. As the liquid in the container becomes less and less, until the liquid level is lower than the position h2 of the second input port, the liquid only enters the extraction pipe from the first input port 23, and a large amount of air is inhaled from the second input port 24. This causes the liquid flowing out of the output pipe 90 to decrease significantly, and makes a sound due to the inhalation of air from the second input port, thus simultaneously giving an alarm of insufficient remaining material from both the visual and sound aspects to remind the operator to prepare for replenishment.

[0029] Figure 2Schematic diagram of the principle of another embodiment of the liquid dispensing device according to the present invention, different from Figure 1 the liquid dispensing device in mainly in the change of the extraction tube. Specifically, the extraction tube is composed of a main tube 30 and a branch tube 40. One end of the main tube 30 is connected to the inlet of the pressure pump 10, and the other end is formed as the first input port 23. One end of the branch tube 40 communicates with the main tube 30, and the other end is formed as the second input port 24. The main tube 30 and the branch tube 40 can be provided as an integral part, or can be formed separately and then formed by connecting the branch tube to the main tube. Compared with Figure 1 directly opening the second input port on the side wall of the extraction tube in Figure 2 the extraction tube in uses a branch tube 40, which can reduce the stress concentration caused by the opening on the side wall of the extraction tube and has better tube strength.

[0030] Figure 3 Schematic diagram of the principle of another embodiment of the liquid dispensing device according to the present invention, which further changes the extraction tube. Specifically, the extraction tube includes a main tube 30, a first branch tube 40 and a second branch tube 50. One end of the main tube 30 is connected to the inlet of the pressure pump 10, and the other end is connected to a pipe joint 60. The first branch tube 40 and the second branch tube 50 are arranged in parallel and connected to the main tube through a common pipe joint 60. Among them, one end of the first branch tube 40 is connected to the pipe joint 60, and the other end is formed as the first input port 23. One end of the second branch tube 50 is connected to the pipe joint 60, and the other end forms the second input port 24. Based on the main tube 30, the first branch tube 40 and the second branch tube 50 of this embodiment are respectively connected to the pipe joint 60, for example, by plugging, so that selection can be made during use to meet the use requirements of containers with different depths.

[0031] Figure 4 Schematic diagram of the principle of another embodiment of the liquid dispensing device according to the present invention, which further changes the extraction tube. Specifically, the extraction tube includes a main tube 30, a first branch tube 40 and a second branch tube 50. One end of the main tube 30 is connected to the inlet of the pressure pump 10, and the other end is connected to a pipe joint 60. The second branch tube 50 is sleeved on the first branch tube 40 and is jointly connected to the pipe joint 60 to communicate with the main tube 30. The free end of the first branch tube 40 forms the first input port 23, and the end of the second branch tube 50 forms the second input port 24. A gap is left between the first branch tube 40 and the second branch tube 50 to form a channel for liquid or gas to flow through.

[0032] Figure 5Schematic diagram of the principle of another embodiment of the liquid dispensing device according to the present invention, which further modifies the extraction tube. Specifically, the input end of the extraction tube of the liquid dispenser includes three input ports: a first input port located at the end, a second input port having a higher liquid level than the first input port, and a third input port having a higher liquid level than the second input port.

[0033] After the extraction tube is placed in the container, the position h1 of the first input port in the container is almost close to the bottom of the tank, so as to allow almost all the liquid in the container to be extracted. As the liquid in the container becomes less and less, when the liquid level is lower than the position h2 of the second input port, the liquid only enters the extraction tube from the first input port and the third input port, and a large amount of air enters from the second input port. This makes the flow rate from the output tube significantly decrease, and there will be a sound due to the inhalation of air from the second input port, thus giving an alarm of insufficient remaining material both visually and audibly, reminding the operator to prepare for replenishment.

[0034] When the liquid in the container is further reduced to be lower than the position of the third input port, the liquid only enters the extraction tube from the first input port, and a large amount of air enters from the second input port and the third input port. This makes the flow rate from the output tube further decrease, and there will be a louder sound due to the inhalation of air from the second input port and the third input port, thus reminding that an alarm of severely insufficient remaining material is given both visually and audibly, reminding the operator that replenishment must be made as soon as possible.

[0035] Figure 5 The shown extraction tube allows multi-level warning of the remaining material level in the container by arranging input ports at multiple different liquid levels, which is convenient for the operator to master the remaining liquid amount in the container. Advantageously, in addition to the configuration with three input ports shown in the figure, more input ports can be set as needed. In addition, each input port can be set to have different diameters to achieve different flow rates and sound alarms at different liquid levels.

[0036] Figure 6 Schematic diagram of the principle of another embodiment of the liquid dispensing device according to the present invention, which further modifies the extraction tube. Compared with Figure 5 the shown embodiment, in addition to the first input port 23 at the end of the extraction tube, the other input ports with higher liquid levels are not directly arranged on the tube body of the extraction tube, but instead are the ends of the branch tubes extending from the tube body of the main tube. Specifically, the extraction tube is composed of a main tube 30, a first branch tube 40, and a second branch tube 50. One end of the main tube 30 is connected to the inlet of the pressure pump 10, and the other end forms the first input port 23. One end of the first branch tube 40 is connected to the main tube 30, and the other end forms the second input port 24. One end of the second branch tube 50 is communicated with the main tube 30, and the other end forms the third input port 25.

[0037] The foregoing has described only exemplary embodiments of the spirit and principles of the present invention. It will be apparent to those skilled in the art that various changes can be made to the described examples without departing from the spirit and principles, and these changes and their various equivalent forms are contemplated by the inventors and fall within the scope defined by the claims of the present invention.

Claims

1. A device for dispensing liquid from a container, comprising: A pressure pump (10) adapted to drive the flow of liquid in a conduit; An extraction tube (20) having an input end (22) and an output end (21), wherein the input end (22) is adapted to extend into the inner cavity of the container (80), and the output end (21) is connected to the inlet of the pressure pump (10) to extract liquid from the container (80) under the drive of the pressure pump (10); and A delivery tube (90) connected to the outlet of the pressure pump (10) to output the extracted liquid; Characterized in that The input end (22) of the extraction tube (20) at least includes a first input port (23) and a second input port (24), wherein the position of the first input port (23) in the container is adapted to be arranged to allow extraction of all available liquid in the container, and the position of the second input port (24) in the container is adapted to be arranged to have a higher liquid level than the first input port (23); A valve is provided on the delivery tube, the valve controls the opening and closing of the delivery flow path and is linked with the pressure pump, such that the pressure pump is started while the delivery flow path is opened, and the pressure pump is stopped while the delivery flow path is closed; The extraction tube is provided as a continuous conduit, and the port at the end of the input end serves as the first input port, and another opening is provided above the first input port on the extraction tube as the second input port, the position of the second input port is set to correspond to the state where there is not much remaining liquid in the container and replenishment is needed at any time. In response to the liquid level in the container being lower than the position of the second input port, liquid only enters the extraction tube from the first input port, and a large amount of air is inhaled from the second input port to make a sound.

2. The device according to claim 1, wherein The extraction tube includes a main tube (30) and a first branch tube (40), one end of the main tube (30) is connected to the inlet of the pressure pump (10), and the other end forms the first input port (23), one end of the first branch tube (40) is connected to the main tube (30), and the other end forms the second input port (24).

3. The device according to claim 1, wherein The extraction tube includes a main tube (30), a first branch tube (40) and a second branch tube (50), one end of the main tube (30) is connected to the inlet of the pressure pump (10), and the other end is connected to a pipe joint (60), one end of the first branch tube (40) is connected to the pipe joint (60), and the other end forms the first input port (23), one end of the second branch tube (50) is connected to the pipe joint (60), and the other end forms the second input port (24).

4. The device according to claim 3, characterized in that The first branch tube (40) and the second branch tube (50) are arranged side by side and connected to the main tube (30) through a pipe joint (60).

5. The device according to claim 3, wherein The second branch tube (50) is sleeved on the outer periphery of the first branch tube (40), and there is a gap between the first branch tube (40) and the second branch tube (50) allowing liquid and gas to flow through.

6. The device according to claim 1, characterized in that, The input end (22) of the extraction pipe (20) further includes a third input port (25), and the position of the third input port (25) inside the container is adapted to be arranged to have a liquid level higher than that of the second input port (24).

7. The device according to claim 6, characterized in that, The extraction pipe includes a main pipe (30), a first branch pipe (40) and a second branch pipe (50). One end of the main pipe (30) is connected to the inlet of the pressure pump (10), and the other end is formed as the first input port (23). One end of the first branch pipe (40) is connected to the main pipe (30), and the other end is formed as the second input port (24). One end of the second branch pipe (50) communicates with the main pipe (30), and the other end forms the third input port (25).

8. An extraction tube for dispensing a liquid from within a container, characterized in that, Comprising: An input end, which is adapted to be inserted into the inner cavity of the container and at least includes a first input port and a second input port. The position of the first input port inside the container is adapted to be arranged to allow extraction of all available liquid in the container, and the position of the second input port inside the container is adapted to be arranged to have a liquid level higher than that of the first input port; And An output end, which is adapted to be connected to the inlet of the pressure pump to extract liquid from the container under the drive of the pressure pump, Wherein, the pressure pump is linked with a valve arranged on the delivery pipe. The valve controls the opening and closing of the delivery flow path, so that the pressure pump is started while the delivery flow path is opened, and the pressure pump is stopped while the delivery flow path is closed. The delivery pipe is connected to the outlet of the pressure pump to output the extracted liquid, Wherein, the extraction pipe is arranged as a continuous conduit, and the port at the end of the input end serves as the first input port. Another opening is provided above the first input port of the extraction pipe as the second input port. The position of the second input port is set to correspond to the state where there is not much remaining liquid in the container and replenishment of materials needs to be prepared at any time. In response to the liquid level in the container being lower than the position of the second input port, liquid only enters the extraction pipe from the first input port, and a large amount of air is inhaled from the second input port to make a sound.

9. The extraction tube according to claim 8, characterized in that, The extraction pipe includes a main pipe, a first branch pipe and a second branch pipe. One end of the main pipe is adapted to be connected to the inlet of the pressure pump, and the other end is connected to a pipe joint. One end of the first branch pipe is connected to the pipe joint, and the other end is formed as the first input port. One end of the second branch pipe is connected to the pipe joint, and the other end forms the second input port.

10. The extraction tube according to claim 8, characterized in that, The input end of the extraction pipe further includes a third input port, and the position of the third input port inside the container is adapted to be arranged to have a liquid level higher than that of the second input port.

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