Water purifier

Abstract

The utility model relates to a water purifier which comprises a pipeline; the filter element assembly comprises at least one filter element arranged on the pipeline, and one filter element is recorded as a first filter element; a wastewater pipe in fluid communication with the first filter element; the water tank assembly is arranged on the pipeline and is positioned at the downstream of the filter element assembly; the device is characterized by further comprising a venturi tube arranged on the wastewater tube; an inlet of the drain pipe is in fluid communication with the water tank assembly, and an outlet of the drain pipe is in fluid communication with a water inlet of the Venturi pipe. The water purifier has the advantages that the emptying mode of the water purifier is simple, the pressure for discharging waste water in the waste water pipe can be directly utilized, an additional emptying power source is not needed, and the emptying efficiency can be improved by adopting a Venturi principle mode.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification, in particular to a water purifier. Background Art

[0002] Water purifiers in the prior art usually have the functions of discharging hot water and normal temperature water. For example, the Chinese utility model patent with patent number ZL202121567902.5 (authorization announcement number CN 215559651U) discloses a three-temperature integrated water purifier, which is equipped with a water purification tank and a hot tank. However, since there is no drainage structure, the water in the conventional water purifier, especially the water in the hot tank, cannot be emptied. The water remaining inside for a long time will produce harmful substances, affecting the health of users.

[0003] In order to drain the water in the prior art, a Chinese utility model patent with patent number ZL 201721919115.6 (authorization announcement number CN207891097U) discloses a water purifier with a low-temperature draining function, in which a drain pump is provided to automatically control the operation of the drain pump to drain the water in the pipe connected to the faucet; therefore, the water purifier in the prior art usually requires an additional power source for draining the water. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a water purifier which can drain water from a water tank assembly without an additional power source in view of the above-mentioned prior art.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a water purifier, comprising:

[0006] Pipeline;

[0007] The filter element assembly comprises at least one filter element arranged on the pipeline, wherein one of the filter elements is referred to as a first filter element;

[0008] a waste water pipe in fluid communication with the first filter element;

[0009] A water tank assembly is arranged on the pipeline and is located downstream of the filter element assembly;

[0010] The invention is characterized in that it also includes:

[0011] A venturi tube, arranged on the wastewater pipe;

[0012] The drain pipe has an inlet in fluid communication with the water tank assembly and an outlet in fluid communication with the water inlet of the venturi tube.

[0013] Furthermore, the water tank assembly includes at least one water tank, each of the water tanks is fluidically connected, and the drain pipe is fluidically connected to one of the water tanks.

[0014] Preferably, there are two water tanks, namely a normal temperature water tank and a hot water tank with a built-in heating component. The hot water tank is arranged below the normal temperature water tank so that the water in the normal temperature water tank flows into the hot water tank under the action of gravity.

[0015] In order to prevent water from flowing back, the pipeline also includes a first one-way valve arranged between the first filter element and the normal temperature water tank.

[0016] Preferably, the drain pipe is in fluid communication with the hot water tank, and a drain valve is provided on the drain pipe.

[0017] Preferably, the wastewater pipe is further provided with a wastewater valve, and the wastewater valve is located upstream of the venturi tube.

[0018] Preferably, a second one-way valve is also provided on the waste water pipe.

[0019] Preferably, the first filter element is a nanofiltration filter element or a reverse osmosis membrane filter element.

[0020] Preferably, the pipeline further includes a booster pump arranged upstream of the first filter element.

[0021] In the above solution, the filter element assembly further includes a second filter element located upstream of the boost pump on the pipeline and / or a third filter element located downstream of the first filter element.

[0022] Compared with the prior art, the utility model has the advantages that: by arranging a venturi tube on the wastewater pipe, and connecting the outlet of the drain pipe in fluid communication with the water tank assembly to the water inlet of the venturi tube, the water stored in the water tank assembly can be sucked into the venturi tube by the venturi principle when the wastewater is discharged from the wastewater pipe, and finally discharged together with the wastewater, so as to realize the emptying of the water in the water tank assembly. Therefore, the emptying method of the water purifier is simple, and the pressure of the wastewater discharged in the wastewater pipe can be directly used, without the need for an additional emptying power source, and the use of the venturi principle can improve the emptying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a water circuit diagram of a water purifier in an embodiment of the utility model. DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0025] like Figure 1 As shown, the water purifier in this embodiment includes a pipeline 1, a filter element assembly, a waste water pipe 3, a water tank assembly, a venturi tube 5 and a drain pipe 6.

[0026] The filter element assembly includes at least one filter element arranged on the pipeline 1, such as Figure 1As shown, the filter element assembly in this embodiment includes three filter elements, namely a first filter element 21, a second filter element 22 located upstream of the first filter element 21, and a third filter element 23 located downstream of the first filter element 21. The second filter element 22 in this embodiment includes a pre-filter element 221 and a scale inhibition module 222. The pre-filter element 221 can be a composite filter element of PP cotton and carbon rod, a composite filter element of PP melt-blown and granular carbon, a composite filter element of folded PP and carbon rod, etc. The scale inhibition module 222 can adopt alkaline or acidic scale inhibition materials; the first filter element 21 is a nanofiltration filter element or a reverse osmosis membrane filter element; the third filter element 23 is a post-filter element, which is a commonly used filter element in water purifiers and will not be elaborated here.

[0027] The waste water pipe 3 is in fluid communication with the first filter element 21; the venturi tube 5 is arranged on the waste water pipe 3; the waste water valve 31 and the second one-way valve 32 are also arranged on the waste water pipe 3, and the waste water valve 31 and the second one-way valve 32 in this embodiment are both located upstream of the venturi tube 5; the water tank assembly is arranged on the pipeline 1 and downstream of the filter element assembly, the inlet of the drain pipe 6 is in fluid communication with the water tank assembly, and the outlet of the drain pipe 6 is in fluid communication with the water inlet of the venturi tube 5. The water tank assembly includes at least one water tank, each of which is in fluid communication with each other, and the drain pipe 6 is in fluid communication with one of the water tanks. There are two water tanks in this embodiment, namely a normal temperature water tank 41 and a hot water tank 42 with a built-in heating assembly 40, and the hot water tank 42 is arranged below the normal temperature water tank 41 so that the water in the normal temperature water tank 41 flows into the hot water tank 42 under the action of gravity; the drain pipe 6 is in fluid communication with the hot water tank 42, and an emptying valve 61 is arranged on the drain pipe 6.

[0028] The pipeline 1 also includes a first one-way valve 11 disposed between the first filter element 21 and the normal temperature water tank 41 and a booster pump 7 disposed upstream of the first filter element 21. In this embodiment, the first one-way valve 11 is disposed between the first filter element 21 and the third filter element 23, the booster pump 7 is disposed between the anti-scaling module 222 and the first filter element 21, and a water inlet valve 8 is also disposed between the pre-filter element 221 and the anti-scaling module 222.

[0029] The emptying process of the water purifier in this embodiment is:

[0030] When the wastewater valve 31 and the drain valve 61 are started, a large water flow will flow at the outlet of the second one-way valve 32 on the wastewater pipe 3. This water flow will pass through the venturi tube 5, that is, the water stored in the hot water tank 42 and the normal temperature water tank 41 will be sucked away by the venturi principle to empty the hot water tank 42 and the normal temperature water tank 41; and the wastewater discharged through the wastewater valve 31 can also be discharged from low to high.

[0031] The "fluid communication" referred to in the present invention refers to the spatial position relationship between two parts or parts (hereinafter collectively referred to as the first part and the second part), that is, the fluid (gas, liquid or a mixture of the two) can flow from the first part along the flow path or / and be transported to the second part. The first part and the second part can be directly connected, or the first part and the second part can be indirectly connected through at least one third party. The third party can be a fluid channel such as a pipe, channel, duct, guide member, hole, groove, etc., or it can be a chamber allowing fluid to flow through, or a combination of the above.

Claims

1. A water purifier, comprising: Pipeline (1); A filter element assembly, comprising at least one filter element arranged on a pipeline (1), wherein one of the filter elements is referred to as a first filter element (21); A waste water pipe (3) in fluid communication with the first filter element (21); A water tank assembly, arranged on the pipeline (1) and downstream of the filter element assembly; The invention is characterized in that it also includes: A venturi tube (5) is arranged on the wastewater pipe (3); The drain pipe (6) has an inlet in fluid communication with the water tank assembly and an outlet in fluid communication with the water inlet of the venturi tube (5).

2. The water purifier according to claim 1, characterized in that: The water tank assembly comprises at least one water tank, each of the water tanks is fluidically connected, and the drain pipe (6) is fluidically connected to one of the water tanks.

3. The water purifier according to claim 2, characterized in that: There are two water tanks, namely a normal temperature water tank (41) and a hot water tank (42) having a built-in heating component (40); the hot water tank (42) is arranged below the normal temperature water tank (41) so that the water in the normal temperature water tank (41) flows into the hot water tank (42) under the action of gravity.

4. The water purifier according to claim 3, characterized in that: The pipeline (1) also includes a first one-way valve (11) disposed between the first filter element (21) and the normal temperature water tank (41).

5. The water purifier according to claim 3, characterized in that: The drain pipe (6) is in fluid communication with the hot water tank (42), and a drain valve (61) is provided on the drain pipe (6).

6. The water purifier according to any one of claims 1 to 5, characterized in that: The wastewater pipe (3) is also provided with a wastewater valve (31), and the wastewater valve (31) is located upstream of the venturi tube (5).

7. The water purifier according to claim 6, characterized in that: The waste water pipe (3) is also provided with a second one-way valve (32).

8. The water purifier according to claim 6, characterized in that: The first filter element (21) is a nanofiltration filter element or a reverse osmosis membrane filter element.

9. The water purifier according to claim 8, characterized in that: The pipeline (1) also includes a booster pump (7) arranged upstream of the first filter element (21).

10. The water purifier according to claim 9, characterized in that: The filter element assembly further comprises a second filter element (22) located upstream of the booster pump (7) on the pipeline (1) and / or a third filter element (23) located downstream of the first filter element (21).

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