Liquid level control system and water purifying and drinking machine

Abstract

The utility model discloses a liquid level control system and a water purifying and drinking machine, the liquid level control system comprises a pure water tank and a communicating pipe, the bottom of the pure water tank is communicated with the bottom of the communicating pipe, so that the liquid level of the pure water tank is the same as that of the communicating pipe; a communicating pipe is arranged at the bottom of the pure water tank, a cover body is arranged above the communicating pipe, a liquid level detection device is arranged on the cover body, a water drainage pipe is further arranged at the bottom of the pure water tank, a flow meter is further arranged at the water outlet end of the water drainage pipe, and the water purifying and drinking machine comprises the control system. The problem that the structural damage of the liquid level detection device is easily caused by frequent taking of the pure water tank is solved.

Description

Technical Field

[0001] The utility model relates to a liquid level control system and a water purifier. Background Art

[0002] Most of the water purifiers with external pure water tanks on the market have a liquid level detection device built into the pure water tank, and the high and low liquid levels of the pure water tank are controlled by the liquid level detection device; some water purifiers use a built-in connecting pipe, and the high and low liquid levels are determined by the liquid level detection device in the connecting pipe, and the liquid level detection device has two levels of high and low; however, this structure will have the following problems: 1. The liquid level detection device is built into the pure water tank, which affects the overall aesthetics and the liquid level detection device is easily damaged due to frequent removal of the pure water tank; 2. When the pure water tank is at a low liquid level, the residual water in the pipe between the connecting pipe and the pure water tank and the residual water at the bottom of the connecting pipe cannot be completely emptied. If it is not used for a long time, the water quality of the residual water will deteriorate and bacteria will breed. Summary of the Invention

[0003] In order to solve the above technical problems, the purpose of the present utility model is to provide a liquid level control system and a water purifier.

[0004] The utility model is realized by the following technical solutions:

[0005] A liquid level control system includes a pure water tank and a connecting pipe. The bottom of the pure water tank is connected to the bottom of the connecting pipe so that the liquid levels in the pure water tank and the connecting pipe are the same. A cover is provided above the connecting pipe, and a liquid level detection device is provided on the cover. A drain pipe is also provided at the bottom of the pure water tank, and a flow meter is also provided at the water outlet end of the drain pipe.

[0006] In an embodiment of the present invention, the water inlet end of the flow meter is connected to the water outlet end of the drain pipe, the water outlet end of the flow meter is connected to the water inlet end of a water pipe, the water outlet end of the water pipe is connected to the water inlet end of the pump body, and the water outlet end of the pump body is connected to the water outlet pipe.

[0007] In an embodiment of the present invention, a joint is provided at the bottom of the pure water tank, which is connected to the bottom of the pure water tank. The joint includes a first water outlet and a second water outlet that are connected to each other. The first water outlet is connected to the bottom of the connecting pipe through a connecting pipe.

[0008] In an embodiment of the present invention, the second water outlet is connected to the flow meter via a drainage pipe.

[0009] In an embodiment of the present invention, a vent hole is provided on the cover body to ensure that the air pressure in the connecting pipe is consistent with that in the pure water tank.

[0010] The utility model also discloses another technical feature:

[0011] A water purifier comprises the above-mentioned liquid level control system.

[0012] The utility model provides a liquid level control system and a water purifier, which have the following beneficial effects: 1. The solution enables the pure water tank and the liquid level detection device to be separated and exist in an independent manner, thereby solving the problem that frequent removal of the pure water tank easily leads to structural damage to the liquid level detection device; 2. The solution effectively improves the detection accuracy and ensures that the liquid level in the connecting pipe is always consistent with the liquid level in the pure water tank; 3. The solution solves the problem that when the liquid level of the water purifier is low and it has not been used for a long time, the residual water in the connecting pipe and the pipeline can be completely emptied, thereby avoiding the deterioration of the water quality of the residual water and the breeding of bacteria. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 It is a schematic diagram of the present utility model. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0016] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0018] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0019] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0020] Referring to the drawings in the specification, a liquid level control system includes a pure water tank 10 and a connecting pipe 20. The bottom of the pure water tank is connected to the bottom of the connecting pipe so that the liquid levels of the pure water tank and the connecting pipe are the same, so that the two can be at the same liquid level when the liquid level is the lowest; a cover body 30 is provided above the connecting pipe, and a liquid level detection device 40 is provided on the cover body. The liquid level detection device is mainly used to detect the highest liquid level of the pure water tank. A drain pipe 50 is also provided at the bottom of the pure water tank, and a flow meter 60 is also provided at the water outlet end of the drain pipe. When the liquid level is normal, the value of the flow meter is a normal value. When the liquid level is low or there is almost no water, the value of the flow meter will decrease. At this time, it can be judged that the pure water tank is at a low liquid level and water needs to be added.

[0021] Preferably, the water inlet end of the flow meter is connected to the water outlet end of the drain pipe, the water outlet end of the flow meter is connected to the water inlet end of a water pipe 71, the water outlet end of the water pipe is connected to the water inlet end of the pump body 70, and the water outlet end of the pump body is connected to the water outlet pipe 72, so that the flow meter can more accurately determine whether the water level in the pure water tank is too low.

[0022] Furthermore, a connector 11 is provided at the bottom of the pure water tank, communicating with the bottom of the tank. The connector includes a first water outlet 12 and a second water outlet 13. The first water outlet is connected to the bottom of the connecting pipe via a connecting pipe 80. The second water outlet is connected to the flow meter via a drain pipe. A vent hole 31 is provided on the cover to ensure that the air pressure in the connecting pipe is consistent with that in the pure water tank.

[0023] The utility model also discloses another technical feature:

[0024] A water purifier comprises the above-mentioned liquid level control system.

[0025] The water purifier of the present invention can adopt an external pure water tank structure, and the liquid level detection device is installed inside the water purifier. The high liquid level is determined by the liquid level detection device in the connecting pipe, and the low liquid level is determined by the water flow rate of the flow meter.

[0026] To be more specific, the present invention is as follows: the connecting pipe is connected to the pure water tank through a connecting pipe to realize the principle water circuit of the connecting pipe; a liquid level detection device for detecting the water level is installed on the top of the connecting pipe, and a high liquid level signal is judged by sensing with a magnetic float and a reed switch; the cover body on the top of the connecting pipe is provided with a vent to keep the air pressure in the connecting pipe consistent with that in the pure water tank, so that the liquid level in the connecting pipe is consistent with the liquid level in the pure water tank; a flow meter is provided between the pure water tank and the water outlet pipe, and the flow meter is used to detect the water outlet flow in the pipeline. When the flow rate is lower than a preset value, a low liquid level signal is triggered; the liquid level detection device includes a built-in reed switch, a float, and a high liquid level baffle, which is similar to the prior art and will not be elaborated here; when the water level in the pure water tank is at a high liquid level, the liquid level detection device triggers a high liquid level signal and stops adding water; when the water level in the pure water tank is at a low liquid level, the flow meter triggers a low liquid level signal through the detected flow, and starts adding water to the pure water tank.

[0027] The foregoing description shows and describes preferred embodiments of the present invention. As previously mentioned, it should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the present invention as taught herein or through the techniques or knowledge of the relevant art. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the claims appended hereto.

Claims

1. A liquid level control system, comprising a pure water tank and a connecting pipe, characterized in that: The bottom of the pure water tank is connected to the bottom of the connecting pipe so that the liquid level of the pure water tank and the connecting pipe are the same; a cover is provided above the connecting pipe, and a liquid level detection device is provided on the cover. A drain pipe is also provided at the bottom of the pure water tank, and a flow meter is also provided at the water outlet end of the drain pipe.

2. A liquid level control system according to claim 1, characterized in that: The water inlet end of the flow meter is connected to the water outlet end of the drain pipe, the water outlet end of the flow meter is connected to the water inlet end of a water pipe, the water outlet end of the water pipe is connected to the water inlet end of the pump body, and the water outlet end of the pump body is connected to the water outlet pipe.

3. A liquid level control system according to any one of claims 1 or 2, characterized in that: A joint is provided at the bottom of the pure water tank, and the joint is connected to the bottom of the pure water tank. The joint includes a first water outlet and a second water outlet that are connected to each other. The first water outlet is connected to the bottom of the connecting pipe through a connecting pipe.

4. A liquid level control system according to claim 3, characterized in that: The second water outlet is connected to the flow meter via a drain pipe.

5. A liquid level control system according to any one of claims 1, 2 and 4, characterized in that: The cover body is provided with a vent hole so that the air pressure in the connecting pipe is consistent with that in the pure water tank.

6. A water purifier, characterized in that: It comprises a liquid level control system as described in any one of claims 1-5.

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