CN206666248U

CN206666248U - Purifier

Info

Publication number: CN206666248U
Application number: CN201720243361.8U
Authority: CN
Inventors: 孙天厚; 蔡雪刚
Original assignee: Midea Group Co Ltd; Foshan Shunde Midea Water Dispenser Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Foshan Shunde Midea Water Dispenser Manufacturing Co Ltd
Priority date: 2017-03-13
Filing date: 2017-03-13
Publication date: 2017-11-24
Anticipated expiration: 2027-03-13

Abstract

The utility model discloses a kind of purifier, including filter, and filter has water inlet, waste outlet, water purification delivery port, and purifier also includes：Return of waste water pipeline, the both ends of return of waste water pipeline connect with water inlet and waste outlet respectively；Supercharging device, and return of waste water pipeline connection, to increase the pressure for the waste water that water inlet is flowed to from return of waste water pipeline.Technical solutions of the utility model can reduce waste water ratio while filter core backwash rate is ensured, improve the utilization rate of water.

Description

Water purifying equipment

Technical Field

The utility model relates to the field of household appliances, in particular to water purifying equipment.

Background

The large-flux reverse osmosis water purifier in the market is more and more accepted by consumers at present, and meanwhile, a large-flux reverse osmosis system has a plurality of unsatisfactory places, so that more waste water is produced, and the water utilization rate of the water purifier is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a water purification unit, reduce waste water ratio when aiming at guaranteeing filter core washing strength, improve the water utilization ratio.

In order to achieve the above object, the utility model provides a water purifying equipment, including filter equipment, filter equipment has water inlet, waste water outlet, water purification delivery port, water purifying equipment still includes: the two ends of the waste water return pipeline are respectively communicated with the water inlet and the waste water outlet; and the supercharging device is communicated with the wastewater return pipeline and is used for increasing the pressure of the wastewater flowing from the wastewater return pipeline to the water inlet.

Preferably, the filtration device comprises at least two membrane cartridges arranged in parallel.

Preferably, the membrane cartridge is a reverse osmosis membrane cartridge.

Preferably, the water purifying apparatus further comprises: the waste water return pipeline is connected with the water inlet pipeline, and the joint of the waste water return pipeline and the water inlet pipeline is a return joint; the supercharging device is arranged on the water inlet pipeline and is positioned between the backflow connecting position and the water inlet.

Preferably, a second flow control valve is arranged on the waste water return pipeline.

Preferably, the water purifying apparatus further comprises: the waste water return pipeline is connected with the waste water pipeline, and the joint of the waste water return pipeline and the waste water pipeline is a shunting joint; and a third flow control valve is arranged on the wastewater pipeline and is positioned on one side of the diversion connection position, which is far away from the wastewater discharge port.

Preferably, the water purifying apparatus further comprises: the temperature detector is used for measuring the water temperature at the water inlet; the first control device is used for adjusting the opening degrees of the second flow control valve and the third flow control valve according to the water temperature at the water inlet; wherein, the water temperature at the water inlet is in direct proportion to the flow of the wastewater return pipeline.

Preferably, the water purifying apparatus further comprises: the water quality detector is used for measuring the water quality at the water inlet; the second control device is used for adjusting and regulating the opening degrees of the second flow control valve and the third flow control valve according to the water quality at the water inlet; wherein, the TDS value of the water quality at the water inlet is in direct proportion to the flow value of the wastewater return pipeline.

Preferably, the water purification apparatus further comprises an auxiliary filtering device, wherein the auxiliary filtering device is provided with a front auxiliary filter element and a rear auxiliary filter element; the front auxiliary filter element comprises a front water inlet and a front water outlet, and the rear auxiliary filter element comprises a rear water inlet and a rear water outlet; the front water outlet is communicated with the water inlet, and the purified water outlet is communicated with the rear water inlet.

Preferably, the front auxiliary filter element and the rear auxiliary filter element are the same composite filter element.

The utility model discloses technical scheme is through setting up the waste water return line that both ends communicate filter equipment's water inlet and its waste water outlet respectively in water purification unit to and carry out the supercharging device to the backward flow waste water in the waste water return line, just so can flow into filter equipment from the water inlet again after the pressurization of some waste water through filter equipment waste water outlet exhaust, just so increased the flow that gets into filter equipment middling water relatively, when guaranteeing that the filter core washes intensity, the waste water ratio has been reduced, improve the water utilization ratio.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of a water purifying apparatus of the present invention;

fig. 2 is a schematic structural view of the auxiliary filtering device in fig. 1.

Reference numerals indicate the same.

Reference numerals	Name (R)	Reference numerals	Name (R)
				100	Water purifying equipment	511	Water inlet of membrane filter element
10	Water inlet pipeline	512	Membrane filter element water purification outlet
				20	Waste water pipeline	513	Membrane filter element waste water outlet
21	Third flow control valve	60	Auxiliary filtering device
				22	First waste water pipeline	61	Front auxiliary filter element
23	Second waste water pipeline	611	Front water inlet
				30	Waste water return line	612	Front water outlet
31	Reflow junction	62	Rear auxiliary filter element
				32	Shunt connection	621	Rear water inlet
33	Second flow control valve	622	Rear water outlet
				40	Water purification pipeline	70	Supercharging device
50	Filter device
				51	Membrane filter element

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a water purifying device.

In the embodiment of the present invention, as shown in fig. 1, the water purifying apparatus 100 includes a filtering device 50, the filtering device 50 has a water inlet, a waste water outlet, and a purified water outlet, wherein the water purifying apparatus 100 further includes a waste water return pipeline 30, and two ends of the waste water return pipeline 30 are respectively communicated with the water inlet and the waste water outlet; and a pressurizing device 70 communicated with the wastewater return line 30 for increasing the pressure of the wastewater flowing from the wastewater return line 30 to the water inlet.

Referring to fig. 1, in the present embodiment, the filter device 50 is composed of two membrane cartridges 51, and the two membrane cartridges 51 are viewed as a whole. Of course, the number of the membrane filter elements 51 in the filter device 50 may also be one or more than three, and the filter device 50 may also be formed by other filter elements or by combining the membrane filter elements 51 and other filter elements together, wherein when the number of the filter elements is more than two, the filter elements are arranged in parallel, when the number of the filter elements is more, the water amount filtered by the water purification apparatus 100 is correspondingly larger, and the number of the filter elements may be determined according to the water amount to be treated by the water purification apparatus 100. It should be understood that although the present embodiment shows the filtering device 50 as being composed of the membrane cartridge 51, other related devices may be added. The function of the water inlet of the filter device 50 is to introduce water to be purified into the filter device 50, and the introduced water to be purified is divided into the two membrane cartridges 51, wherein the membrane cartridges 51 also have water inlets, but the water inlets of the membrane cartridges 51 and the water inlets of the filter device 50 are not the same concept, and the water to be purified enters the filter device 50 from the water inlets of the filter device 50, then flows into the respective membrane cartridges 51, and flows into the corresponding membrane cartridges 51 through the membrane cartridge water inlets 511. The function of the waste water outlet is to converge the waste water after the filtration treatment of the two membrane filter elements 51 together and then discharge the waste water out of the filtration device 50, similarly, the membrane filter elements 51 also have waste water outlets, and the waste water outlets of the membrane filter elements 51 and the waste water outlets of the filtration device 50 are not the same concept, the waste water generated in the membrane filter elements 51 is discharged out of the membrane filter elements 51 through the waste water outlets 513 of the membrane filter elements, and then the waste water generated by different membrane filter elements 51 converges together and flows out of the filtration device 50 through the waste water outlets. The effect of water purification delivery port is that the water purification that filters after two membrane filter core 51 gathers together and derives filter equipment 50 again, and like the same, membrane filter core 51 also has the water purification delivery port, and the water purification delivery port of membrane filter core 51 is different for the same notion with filter equipment 50's water purification delivery port, and the water purification that produces in membrane filter core 51 is discharged membrane filter core 51 through self membrane filter core water purification delivery port 512, and then the water purification that different membrane filter core 51 produced gathers together and flows out filter equipment 50 through the water purification delivery port. In the following description, for the avoidance of confusion, the water inlet, clean water outlet and reject outlet are described with respect to the filtration device 50, while the membrane cartridge water inlet 511, membrane cartridge clean water outlet 512 and membrane cartridge reject outlet 513 are described with respect to the membrane cartridge 51. The filtering device 50 may be a specific device, or may be a general term for combining components such as the membrane cartridge 51.

When the water purifying apparatus 100 is in operation, water to be purified enters the filtering device 50 through the water inlet, and in the filtering device 50, the water to be purified is divided into two paths, wherein one path is purified water formed by filtering and flows out of the filtering device 50 through the purified water outlet, and the other path is waste water formed by filtering and is discharged out of the filtering device 50 through the waste water outlet. The waste water discharged from the filtering device 50 through the waste water outlet also forms two paths, one path is called backflow waste water, the backflow waste water flows through the waste water backflow pipeline 30 again through the water inlet and then enters the filtering device, the other path of waste water is directly discharged and discarded, and the waste water is called waste water, wherein the waste water flow discharged from the waste water outlet is waste water flow and backflow waste water flow. It should be understood that the returned wastewater is mixed with the water to be purified and then fed to the filtration device 50 for filtration, but it may be mixed after being fed to the filtration device 50 and mixed before being fed to the membrane cartridge 51. Before entering the filtering device 50, the returned wastewater flows through the pressurizing device 70, and enters the filtering device 50 through the water inlet after being pressurized. The pressure increasing device 70 may be a pressure pump or the like. Through setting up waste water return line 30 and supercharging device 70, reentrant filter equipment 50 after the pressurization with backward flow waste water mixes with the water that needs to purify, like this, just can be under the unchangeable circumstances of the discharge that needs to purify, increased the flow of the water that gets into filter equipment 50 (the discharge that gets into filter equipment 50 at this moment is mixed discharge, wherein mixed discharge equals the backward flow waste water flow + need to purify discharge). In the description herein, the wastewater flow, the water flow to be purified, and the water flow to be purified are all relative to the filtration device 50, and the membrane cartridge wastewater flow, the membrane cartridge water flow to be purified, and the membrane cartridge water flow to be purified are all relative to the membrane cartridge 51.

In the process of using the membrane filter element 51, the surface of the membrane filter element 51 can be adhered with impurities in water, such as electric ions in water, so the membrane filter element 51 can wash the impurities adhered thereon while filtering, the washing is carried out by membrane filter element wastewater generated after the filtration of the membrane filter element 51, and the larger the membrane filter element wastewater generated by the membrane filter element 51 is, the better the washing effect of the membrane filter element 51 is. To achieve good flushing, a large membrane cartridge waste water flow is required and the membrane cartridge clean water flow filtered by the opposite membrane cartridge 51 is relatively reduced. This means that in order to ensure the flushing effect, the flow rate of the waste water of the filtering device 50 is relatively high and the flow rate of the purified water of the filtering device 50 is relatively low under the condition that the flow rate of the purified water is constant, which results in low utilization rate of the water purifying apparatus 100. In order to improve the water utilization rate, under the condition that the water flow rate to be purified of the filtering device 50 is not changed, the washing effect is ensured, and simultaneously, the purified water flow rate of the filtering device 50 is relatively increased, a part of the waste water discharged from the waste water outlet of the filtering device 50 is mixed with the water to be purified and then is reintroduced into the filtering device 50 through the waste water return pipeline 30, at this time, the water flow rate entering the filtering device 50 is the mixed water flow rate, and therefore, under the condition that the water flow rate to be purified is not changed, the water flow rate entering the filtering device 50 is relatively increased. The flushing effect is related to the waste water flow of the waste water outlet of the filtering device 50, and compared with the situation that the waste water return pipeline 30 is not arranged, under the same other conditions, the same flushing effect is ensured (namely the same waste water flow is ensured, certainly, the waste water flow can fluctuate within a certain range), the purified water flow is necessarily relatively large (the mixed water flow-waste water flow is larger than the purified water flow-waste water flow), the utilization efficiency of water is improved, the large purified water flow is obtained, and the service life of the membrane filter element 51 can be prolonged due to the fact that the flushing effect is ensured.

Preferably, the membrane cartridge 51 is a reverse osmosis membrane cartridge. The reverse osmosis membrane filter element has good filtering effect and moderate cost.

Further, the water purifying apparatus 100 further includes: a water inlet pipeline 10 connected with the water inlet, a wastewater return pipeline 30 connected with the water inlet pipeline 10, and a return connection part 31 at the connection part of the wastewater return pipeline 30 and the water inlet pipeline 10; a pressurizing device 70 is provided on the water inlet line 10 between the return connection 31 and the water inlet. By providing the pressure increasing device 70 in this way, the pressure increasing device 70 can increase not only the pressure of the returned wastewater but also the pressure of the water to be purified of the filter device 50, that is, the pressure increasing device 70 increases the pressure of the mixed water of the returned wastewater and the water to be purified. Thus, the need of arranging a pressurizing device 70 for each of the purified water and the returned wastewater can be avoided, the cost is reduced, the structure of the water purifying device 100 is simpler, and the sufficient mixing of the returned wastewater and the purified water can be ensured.

The waste water return line 30 is provided with a second flow control valve 33. The second flow control valve 33 is used for controlling the flow of the backflow wastewater, so that the flow of the backflow wastewater can be adjusted according to actual conditions, for example, when the water quality is good, the flow of the wastewater is small, and the membrane filter element 51 does not need to be cleaned with high strength, and at the moment, the second flow control valve 33 can be properly adjusted to be small so as to reduce the flow of the backflow wastewater, ensure a certain flow of the waste wastewater and be beneficial to the operation of the water purification equipment 100; when the water quality is poor, the flow rate of the wastewater is large, the membrane filter element 51 needs to be cleaned with high strength, at the moment, the second flow control valve 33 can be properly adjusted to increase the flow rate of the backflow wastewater, the flushing effect of the membrane filter element 51 is ensured, and the purified water flow rate of the filtering device 50 is increased, so that the water saving effect is achieved.

The water purifying apparatus 100 further comprises a waste water pipeline 20 connected with the waste water discharge port, the waste water return pipeline 30 is connected to the waste water pipeline 20, and a branch connection 32 is formed at the connection position of the waste water return pipeline 30 and the waste water pipeline 20; the waste water pipe 20 is provided with a third flow control valve 21, and the third flow control valve 21 is positioned on the side of the branch connection 32 away from the waste water discharge port. It should be understood that return waste line 30 may also be connected directly to the waste outlet. In the present embodiment, the third flow rate control valve 21 can control the flow rate of the waste water, and by providing the third flow rate control valve 21, the flow rate of the waste water at the waste water discharge port can be controlled together with the second flow rate control valve 33. Wherein the waste water pipeline between the waste water discharge port and the diversion junction 32 is a first waste water pipeline 22 for flowing the waste water of the filtering device 50, and another section of the waste water pipeline corresponding to the first waste water pipeline is a second waste water pipeline 23, the third flow control valve 21 is located on the second waste water pipeline 23, and the second waste water pipeline 23 is for flowing the waste water.

Further, the water purifying apparatus 100 further includes a temperature detector for measuring a temperature of water at the water inlet; first control means for adjusting the opening degrees of the second flow control valve 33 and the third flow control valve 21 according to the water temperature at the water inlet. This allows control of the flow of return wastewater and waste wastewater based on the temperature of the water at the water inlet, which is proportional to the flow in the wastewater return line 30. When the temperature is higher, such as higher than 25 ℃, the opening degree of the second flow control valve 33 can be properly adjusted, and the third flow control valve 21 can be adjusted according to actual conditions, so that the flow rate of the returned wastewater is relatively increased under the condition of ensuring the proper flow rate of the wastewater of the filtering device 50, and the flushing of the membrane filter element 51 is enhanced. When the water temperature is lower than 25 ℃, the opening degree of the second flow control valve 33 is reduced, and when the temperature is lower, the opening degree of the third flow control valve 21 is reduced, so that the front pressure of a filtering membrane of the membrane filter element 51 can be increased, the purified water flow of the filtering device 50 is indirectly increased, and the problem that the purified water flow is reduced under the low water temperature condition is effectively solved.

The water purifying apparatus 100 further includes a water quality detector for measuring the water quality at the water inlet; and the second control device is used for adjusting and regulating the opening degrees of the second flow control valve 33 and the third flow control valve 21 according to the water quality at the water inlet, wherein the TDS value of the water quality at the water inlet is in direct proportion to the flow of the wastewater return pipeline 30. When the water quality is good, if the TDS value of the water to be purified is below 100mg/L, the membrane filter element 51 does not need too large flushing strength, and then the second flow control valve 33 is turned down or even closed, so that the working strength of the membrane filter element 51 is reduced (the working strength refers to the flow rate of the water to be purified of the membrane filter element 51), and the service life of the membrane filter element 51 is prolonged. Meanwhile, the third flow control valve 21 is adjusted to ensure a proper waste water flow, for example, the opening degree of the third flow control valve 21 can be adjusted to be small, so that the waste water flow can be reduced. When quality of water is relatively poor, if the TDS value of the purified water is greater than 300mg/L, the second flow control valve 33 can be enlarged, the flow of the backflow wastewater is increased, and the appropriate flow of the waste wastewater is kept, so that the membrane filter element 51 can be enhanced to be washed, the waste wastewater can be prevented from being too large, the flow of purified water is ensured, and the utilization rate of the purified water is improved. The opening degree of the third flow rate control valve 21 may be kept constant, or may be adjusted to be larger or smaller correspondingly. The opening degrees of the second flow rate switching valve 33 and the third flow rate switching valve 21 can be controlled integrally by the detection data of both the water quality detector and the temperature detector.

Of course, the water purifying apparatus 100 further includes an auxiliary filter unit 60, wherein, as shown in fig. 2, the auxiliary filter unit 60 is provided with a front auxiliary filter element 61 and a rear auxiliary filter element 62; the front auxiliary filter element 61 comprises a front water inlet 611 and a front water outlet 612, and the rear auxiliary filter element 62 comprises a rear water inlet 621 and a rear water outlet 622; wherein, the front water outlet 612 is communicated with the water inlet, and the clean water outlet is communicated with the rear water inlet 621. In the working process of the water purifying apparatus, the water to be purified firstly enters the front auxiliary filter element 61 through the front water inlet 611 of the front auxiliary filter element 61 for pre-filtering, then flows out from the front water outlet 612, and then enters the filtering device 50. Then, the purified water from the purified water outlet of the filtering device 50 flows into the rear water inlet 621 through the purified water pipe 40, and is post-filtered in the rear auxiliary filter element 62, and then flows out from the rear water outlet 622. The front auxiliary filter element 61 can primarily filter the magazines in the water, so that the working strength of the membrane filter element 51 in the filter device 50 is reduced, and the rear auxiliary filter element 622 can further ensure that the purified water filtered by the water purifying device 100 is more sanitary and cleaner.

Wherein, the front auxiliary filter element 61 and the rear auxiliary filter element 62 are the same composite filter element. Preceding supplementary filter core 61 and the supplementary filter core 622 integrated into one piece in back for preceding supplementary filter core 61 and the split type design of supplementary filter core 62 in back, the space that occupies is still less, makes water purification unit 100 simpler, and space utilization is higher.

The above is only the preferred embodiment of the present invention, and the patent scope of the present invention is not limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. The utility model provides a water purification unit, includes filter equipment, filter equipment has water inlet, waste water outlet, water purification delivery port, its characterized in that, water purification unit still includes:

the two ends of the waste water return pipeline are respectively communicated with the water inlet and the waste water outlet;

and the supercharging device is communicated with the wastewater return pipeline and is used for increasing the pressure of the wastewater flowing from the wastewater return pipeline to the water inlet.

2. The water purification apparatus of claim 1, wherein the filtration device comprises at least two membrane cartridges arranged in parallel.

3. The water purification apparatus of claim 2, wherein the membrane cartridge is a reverse osmosis membrane cartridge.

4. The water purification apparatus of claim 1, further comprising:

the waste water return pipeline is connected with the water inlet pipeline, and the joint of the waste water return pipeline and the water inlet pipeline is a return joint;

the supercharging device is arranged on the water inlet pipeline and is positioned between the backflow connecting position and the water inlet.

5. The water purification apparatus of claim 1, wherein a second flow control valve is provided on the wastewater return line.

6. The water purification apparatus of claim 5, further comprising:

the waste water return pipeline is connected with the waste water pipeline, and the joint of the waste water return pipeline and the waste water pipeline is a shunting joint;

and a third flow control valve is arranged on the wastewater pipeline and is positioned on one side of the diversion connection position, which is far away from the wastewater discharge port.

7. The water purification apparatus of claim 6, further comprising:

the temperature detector is used for measuring the water temperature at the water inlet;

the first control device is used for adjusting the opening degrees of the second flow control valve and the third flow control valve according to the water temperature at the water inlet;

wherein, the flow of the waste water return pipeline is in direct proportion to the water temperature at the water inlet.

8. The water purifying apparatus of any one of claims 6 to 7, further comprising:

the water quality detector is used for measuring the water quality at the water inlet;

the second control device is used for adjusting and regulating the opening degrees of the second flow control valve and the third flow control valve according to the water quality at the water inlet;

wherein, the flow of the waste water return line is in direct proportion to the TDS value of the water quality at the water inlet.

9. The water purifying apparatus of any one of claims 1 to 7, further comprising an auxiliary filtering device, wherein the auxiliary filtering device is provided with a front auxiliary filter element and a rear auxiliary filter element;

the front auxiliary filter element comprises a front water inlet and a front water outlet, and the rear auxiliary filter element comprises a rear water inlet and a rear water outlet; wherein,

the front water outlet is communicated with the water inlet, and the purified water outlet is communicated with the rear water inlet.

10. The water purification apparatus of claim 9, wherein the front auxiliary filter element and the rear auxiliary filter element are the same composite filter element.