Automatic circulating cleaning device of single-house type water purification equipment

Abstract

The utility model discloses an automatic circulating cleaning device of single-house type water purification equipment, which belongs to the technical field of water filters and comprises a main filter, an ultrafiltration element is arranged in the middle of the main filter, a purified water discharge pipe is arranged at the water outlet end of the ultrafiltration element, and a temporary water storage cavity for storing purified water is arranged at the end of the main filter. The purified water discharge pipe is communicated with the temporary water storage cavity, and the temporary water storage cavity is integrally designed, so that the equipment is simpler and more attractive, and the self-cleaning operation can be more conveniently carried out. A two-way flushing pump is arranged outside the main filter, one end of the two-way flushing pump is communicated with the interior of the temporary water storage cavity, a three-way valve is arranged at the other end of the two-way flushing pump, and at least one end of the three-way valve is communicated with external air; and the self-cleaning effect is improved by combining two modes of water washing and gas washing. And during reverse flushing, the two-way flushing pump introduces external air into the temporary water storage cavity, and the filtered water or air in the temporary water storage cavity is reversely discharged from the ultrafiltration element under the action of pressure.

Description

Technical Field

[0001] This utility model relates to the field of water filter technology, and in particular to an automatic circulating cleaning device for a single-household water purification system. Background Technology

[0002] This single-family direct drinking water purification system is designed specifically for home use, with its technical architecture closely centered around three core needs: "small space, high efficiency, and low maintenance." It utilizes hollow fiber membranes for superior filtration, employing hollow fiber ultrafiltration membranes with an outer diameter of 0.5-2.0mm and an inner diameter of 0.3-1.4mm. High-density winding technology enables the miniaturization of the filter cartridge, allowing for easy installation under the sink. Targeting the characteristics of household water use, the membrane pore size is optimized to 0.01-0.1μm, effectively intercepting bacteria, colloids, and other contaminants while retaining beneficial minerals such as calcium and magnesium, avoiding "soft water disease" caused by over-filtration. It requires only 1-3 bar of municipal water pressure to operate, eliminating the need for a booster pump, reducing energy consumption and equipment noise, making it ideal for quiet home environments.

[0003] However, existing single-unit filtration equipment is small in size and requires an additional backwash tank to clean the filter element, resulting in poor cleaning effect and overly complicated equipment. Utility Model Content

[0004] To address the aforementioned problems, this utility model aims to solve the problems described above. One objective of this utility model is to provide an automatic circulating cleaning device for single-household water purification equipment that solves the problems mentioned above. In single-household direct drinking water equipment, the combination of ultrafiltration membrane and self-cleaning function achieves a dual breakthrough of "high-efficiency filtration + long-term maintenance." The self-cleaning technology reduces the frequency of filter replacement, and the annual maintenance cost of a single set of equipment can be reduced by more than 50%.

[0005] The solution adopted in this embodiment is: an automatic circulating cleaning device for a single-household water purification equipment, including a main filter, an ultrafiltration element in the middle of the main filter, a purified water discharge pipe at the outlet end of the ultrafiltration element, and a temporary water storage chamber for storing purified water at the end of the main filter. The purified water discharge pipe is connected to the temporary water storage chamber. The integrated design of the temporary water storage chamber makes the equipment simpler and more beautiful.

[0006] A bidirectional flushing pump is installed outside the main filter. One end of the bidirectional flushing pump is connected to the interior of the temporary water storage chamber, and the other end of the bidirectional flushing pump is equipped with a three-way valve. At least one end of the three-way valve is connected to external air. This combination of water washing and air washing improves the self-cleaning effect. During backwashing, the bidirectional flushing pump introduces external air into the temporary water storage chamber, and under pressure, the filtered water or air in the temporary water storage chamber is discharged backward from the ultrafiltration element.

[0007] During normal water supply, some water can be stored in a temporary water storage chamber for self-cleaning. The purified water discharge pipe passes through the temporary water storage chamber and extends to the outside. A purified water valve is provided at the external end of the purified water discharge pipe. A connecting hole is provided on the side wall of the purified water discharge pipe in the temporary water storage chamber.

[0008] The storage and drainage of water are controlled by controlling the air pressure inside the temporary water storage chamber. An electrically controlled air valve is provided on the top side wall of the temporary water storage chamber. One end of the electrically controlled air valve is connected to the inside of the temporary water storage chamber, and the other end is connected to one end of the bidirectional flushing pump.

[0009] To facilitate the control of draining water from the temporary water storage chamber for cleaning, an electrically controlled water valve is installed on the bottom side wall of the temporary water storage chamber. One end of the electrically controlled water valve is connected to the inside of the temporary water storage chamber, and the other end is connected to one end of the bidirectional flushing pump. The electrically controlled air valve and the electrically controlled water valve are connected to the same end of the bidirectional flushing pump. The electrically controlled air valve and the electrically controlled water valve are linked to switch between water cleaning and air cleaning states.

[0010] For better cleaning results, a spiral flushing tube is also included. The spiral flushing tube is located in the main filter and is spirally wound around the outside of the ultrafiltration element. The spiral flushing tube is provided with a number of flushing holes facing the ultrafiltration element. The water inlet end of the spiral flushing tube is connected to one end of the three-way valve.

[0011] When the temporary water storage chamber is storing water, the electrically controlled air valve opens and the electrically controlled water valve closes. The bidirectional flushing pump draws water towards the three-way valve, and the three-way valve opens the channel connecting to the outside.

[0012] When backwashing is performed, the electrically controlled air valve opens, the electrically controlled water valve closes, the bidirectional flushing pump draws air towards the electrically controlled air valve, and the three-way valve opens the channel connecting to the outside.

[0013] When rinsing the outer wall of the ultrafiltration element, the electrically controlled air valve is closed, the electrically controlled water valve is opened, the bidirectional rinsing pump draws water towards the three-way valve, and the three-way valve opens the channel connected to the spiral rinsing pipe.

[0014] A preferred technical solution is that the connecting hole is located in the middle of the temporary water storage chamber. When the liquid level in the temporary water storage chamber drops below the connecting hole, air enters the ultrafiltration element through the connecting hole. This facilitates switching between water and air intake.

[0015] To facilitate wastewater discharge during cleaning, the main filter is equipped with a water inlet connector on its side wall, and a water inlet control valve is installed on the water inlet connector. The main filter is also equipped with a wastewater drain outlet at its bottom, and a wastewater drain outlet is equipped with a wastewater discharge control valve.

[0016] Compared with the prior art, the automatic circulating cleaning device of this utility model for single-household water purification equipment has the following technical effects:

[0017] 1. The automatic circulating cleaning device for a single-unit water purification equipment of this application includes a main filter, an ultrafiltration element is provided in the middle of the main filter, a purified water discharge pipe is provided at the water outlet end of the ultrafiltration element, and a temporary water storage chamber for storing purified water is provided at the end of the main filter. The purified water discharge pipe is connected to the temporary water storage chamber. The integrated design of the temporary water storage chamber makes the equipment simpler and more beautiful, and makes self-cleaning operation more convenient.

[0018] 2. A bidirectional flushing pump is installed outside the main filter. One end of the bidirectional flushing pump is connected to the interior of the temporary water storage chamber, and the other end of the bidirectional flushing pump is equipped with a three-way valve. At least one end of the three-way valve is connected to external air. This combination of water washing and air washing improves the self-cleaning effect. During backwashing, the bidirectional flushing pump introduces external air into the temporary water storage chamber, and under pressure, the filtered water or air in the temporary water storage chamber is discharged backward from the ultrafiltration element.

[0019] Other features and advantages of the present invention will become clear when reading the following description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to denote similar elements. The drawings described below are some embodiments of the present invention, but not all embodiments. Other drawings will be readily available to those skilled in the art based on these drawings without any inventive effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of an automatic circulating cleaning device for a single-household water purification system provided in a specific embodiment of this utility model;

[0022] In the picture:

[0023] 1. Main filter; 2. Temporary water storage chamber; 3. Clean water discharge pipe; 4. Ultrafiltration cartridge; 5. Spiral flushing pipe; 6. Three-way valve; 7. Two-way flushing pump; 8. Electrically controlled air valve; 9. Electrically controlled water valve; 11. Water inlet connector; 12. Water inlet control valve; 13. Sewage discharge control valve; 14. Sewage outlet; 31. Connecting hole; 32. Clean water valve. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0025] The automatic circulating cleaning device of this single-unit water purification equipment will be described in detail below with reference to the accompanying drawings and embodiments.

[0026] like Figure 1 As shown, this utility model provides an automatic circulating cleaning device for a single-household water purification system, including a main filter 1. An ultrafiltration element 4 is disposed in the middle of the main filter 1, and a purified water discharge pipe 3 is provided at the outlet end of the ultrafiltration element 4. A temporary water storage chamber 2 for storing purified water is provided at the end of the main filter 1. The purified water discharge pipe 3 is connected to the temporary water storage chamber 2. The integrated design of the temporary water storage chamber 2 makes the device more concise and aesthetically pleasing. Tap water is filtered by the ultrafiltration element 4 and then output to the user end through the purified water discharge pipe 3. The ultrafiltration element 4 uses a hollow fiber ultrafiltration membrane. Part of the filtered purified water enters the temporary water storage chamber 2 for storage and can be used directly during backwashing, reducing the need for a separate water storage unit. Tap water can be filtered and used immediately, avoiding the impact of long-term storage on water quality.

[0027] A bidirectional flushing pump 7 is externally installed on the main filter 1. One end of the bidirectional flushing pump 7 is connected to the interior of the temporary water storage chamber 2, and the other end of the bidirectional flushing pump 7 is equipped with a three-way valve 6. At least one end of the three-way valve 6 is connected to external air. This combination of water washing and air washing improves the self-cleaning effect. During backwashing, the bidirectional flushing pump 7 introduces external air into the temporary water storage chamber 2. Under pressure, the filtered water or air in the temporary water storage chamber 2 is discharged backward from the ultrafiltration element 4. The bidirectional flushing pump 7 can also introduce external air into the temporary water storage chamber 2, and under pressure, the purified water in the temporary water storage chamber 2 is reversed into the ultrafiltration membrane, discharging impurities from the pores of the ultrafiltration membrane from the inside out. After the water in the temporary water storage chamber 2 is used up, high-pressure gas is continuously introduced to blow air onto the ultrafiltration membrane to further remove impurities.

[0028] During normal water supply, some water can be stored in the temporary water storage chamber 2 for self-cleaning. The purified water discharge pipe 3 passes through the temporary water storage chamber 2 and extends to the outside. A purified water valve 32 is provided at the external end of the purified water discharge pipe 3. A connecting hole 31 is provided on the side wall of the purified water discharge pipe 3 in the temporary water storage chamber 2. The purified water valve 32 is in the closed state during backwashing.

[0029] Water storage and drainage are controlled by adjusting the internal air pressure of the temporary water storage chamber 2. An electrically controlled air valve 8 is installed on the top side wall of the temporary water storage chamber 2. One end of the valve 8 is connected to the interior of the temporary water storage chamber 2, and the other end is connected to one end of the bidirectional flushing pump 7. During water storage in the temporary water storage chamber 2, the bidirectional flushing pump 7 reverses direction to extract air from the chamber, creating a negative pressure inside. Filtered purified water enters the temporary water storage chamber 2 through the connecting hole 31. When the purified water in the temporary water storage chamber 2 needs to be used for cleaning, the bidirectional flushing pump 7 is reversed to inject external air into the chamber. Under high pressure, water is forced into the ultrafiltration element 4 and discharged from the pores of the ultrafiltration element 4. The forward pressure of the bidirectional flushing pump 7 is relatively large, ensuring sufficient pressure to remove impurities clogging the pores of the ultrafiltration element 4. When the water level in the temporary water storage chamber 2 drops below the connecting hole 31, only air is forced into the ultrafiltration element 4, using high-pressure air to clean it.

[0030] To facilitate the control of draining water from the temporary water storage chamber 2 for cleaning, an electrically controlled water valve 9 is installed on the bottom side wall of the temporary water storage chamber 2. One end of the electrically controlled water valve 9 is connected to the interior of the temporary water storage chamber 2, and the other end is connected to one end of the bidirectional flushing pump 7. The electrically controlled air valve 8 and the electrically controlled water valve 9 are connected to the same end of the bidirectional flushing pump 7. The electrically controlled air valve 8 and the electrically controlled water valve 9 are linked to switch between water cleaning and air cleaning states. When the electrically controlled air valve 8 is closed, the electrically controlled water valve 9 is opened simultaneously, and the bidirectional flushing pump 7 draws out the purified water from the temporary water storage chamber 2 and pumps it into the spiral flushing tube 5. For better cleaning effect, the spiral flushing tube 5 is located in the main filter 1 and is spirally wound around the outside of the ultrafiltration element 4. The spiral flushing tube 5 is provided with several flushing holes facing the ultrafiltration element 4. The water inlet end of the spiral flushing tube 5 is connected to one end of the three-way valve 6. The three-way valve 6 switches to the state where the spiral flushing pipe 5 is connected to the bidirectional flushing pump 7. Under the high pressure of the bidirectional flushing pump 7, pure water is sprayed from the spiral flushing pipe 5 to the outside of the ultrafiltration element 4. The water flow impact knocks off the impurities on the outside of the ultrafiltration element 4, resulting in a better cleaning effect.

[0031] The specific working principle is as follows: When the temporary water storage chamber 2 is storing water, the electrically controlled air valve 8 is opened and the electrically controlled water valve 9 is closed. The bidirectional flushing pump 7 draws water towards the three-way valve 6, and the three-way valve 6 opens the channel connecting to the outside. Under the action of the bidirectional flushing pump 7, the air in the temporary water storage chamber 2 is drawn out, creating a negative pressure in the temporary water storage chamber 2. At this time, pure water will enter the temporary water storage chamber 2 through the connecting hole 31 for storage.

[0032] During backwashing, the electrically controlled air valve 8 opens and the electrically controlled water valve 9 closes. The bidirectional flushing pump 7 draws air towards the electrically controlled air valve 8, and the three-way valve 6 opens the connection to the outside. The bidirectional flushing pump 7 introduces external air into the temporary water storage chamber 2, creating high pressure in the temporary water storage chamber 2 that forces pure water into the ultrafiltration element 4, and in reverse, discharges impurities from the ultrafiltration element 4 into the main filter 1, and then discharges it to the outside through the sewage drain outlet 14.

[0033] When rinsing the outer wall of the ultrafiltration element 4, the electrically controlled air valve 8 closes and the electrically controlled water valve 9 opens. The bidirectional rinsing pump 7 draws water towards the three-way valve 6, and the three-way valve 6 opens the channel connected to the spiral rinsing pipe 5. The bidirectional rinsing pump 7 pumps pure water from the temporary water storage chamber 2 into the three-way valve 6. The three-way valve 6 switches to the channel connected to the spiral rinsing pipe 5, spraying water from the spiral rinsing pipe 5 to clean the outer surface of the ultrafiltration element 4. This removes external deposits, and combined with internal cleaning of the pores of the ultrafiltration element 4, makes the cleaning more thorough.

[0034] To allow air cleaning and water cleaning to share a single temporary water storage chamber 2, the connecting hole 31 is located in the middle of the temporary water storage chamber 2. When the liquid level in the temporary water storage chamber 2 drops below the connecting hole 31, air enters the ultrafiltration element 4 through the connecting hole 31. This facilitates switching between water and air intake.

[0035] For convenient wastewater discharge during cleaning, the main filter 1 has a water inlet connector 11 on its side wall, and a water inlet control valve 12 on the water inlet connector 11. The main filter 1 also has a wastewater drain outlet 14 at its bottom, and a wastewater drain control valve 13 on the wastewater drain outlet 14. During cleaning, the water inlet control valve 12 is closed, and the wastewater drain control valve 13 is open. During normal water supply, the water inlet control valve 12 is open, and the wastewater drain control valve 13 is closed.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the article or apparatus that includes that element.

[0037] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. The utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An automatic circulating cleaning device for a single-household water purification system, characterized in that: The system includes a main filter, an ultrafiltration element located in the middle of the main filter, a purified water discharge pipe at the outlet of the ultrafiltration element, and a temporary water storage chamber at the end of the main filter for storing purified water. The purified water discharge pipe is connected to the temporary water storage chamber. A bidirectional flushing pump is installed outside the main filter. One end of the bidirectional flushing pump is connected to the interior of the temporary water storage chamber, and the other end of the bidirectional flushing pump is equipped with a three-way valve. At least one end of the three-way valve is connected to the outside air. During backwashing, the bidirectional flushing pump introduces external air into the temporary water storage chamber, and under pressure, the filtered water or air in the temporary water storage chamber is discharged in reverse from the ultrafiltration element.

2. The automatic circulating cleaning device for a single-household water purification system as described in claim 1, characterized in that: The purified water discharge pipe passes through the temporary water storage chamber and extends to the outside. A purified water valve is provided at the external end of the purified water discharge pipe, and a connecting hole is provided on the side wall of the purified water discharge pipe in the temporary water storage chamber.

3. The automatic circulating cleaning device for a single-unit water purification system as described in claim 1, characterized in that: An electrically controlled air valve is installed on the top side wall of the temporary water storage chamber. One end of the electrically controlled air valve is connected to the interior of the temporary water storage chamber, and the other end is connected to one end of the bidirectional flushing pump.

4. The automatic circulating cleaning device for a single-household water purification system as described in claim 3, characterized in that: An electrically controlled water valve is provided on the bottom side wall of the temporary water storage chamber. One end of the electrically controlled water valve is connected to the interior of the temporary water storage chamber, and the other end is connected to one end of the bidirectional flushing pump. The electrically controlled air valve and the electrically controlled water valve are connected to the same end of the bidirectional flushing pump.

5. The automatic circulating cleaning device for a single-unit water purification system as described in claim 4, characterized in that: It also includes a spiral flushing tube, which is located in the main filter and is spirally wound around the outside of the ultrafiltration element. The spiral flushing tube is provided with a plurality of flushing holes facing the ultrafiltration element, and the water inlet end of the spiral flushing tube is connected to one end of the three-way valve.

6. The automatic circulating cleaning device for a single-unit water purification system as described in claim 3, characterized in that: When the temporary water storage chamber is storing water, the electrically controlled air valve opens and the electrically controlled water valve closes. The bidirectional flushing pump draws water towards the three-way valve, and the three-way valve opens the channel connecting to the outside.

7. The automatic circulating cleaning device for a single-unit water purification system as described in claim 6, characterized in that: When backwashing is performed, the electrically controlled air valve opens, the electrically controlled water valve closes, the bidirectional flushing pump draws air towards the electrically controlled air valve, and the three-way valve opens the channel connecting to the outside.

8. The automatic circulating cleaning device for a single-unit water purification system as described in claim 7, characterized in that: When flushing the outer wall of the ultrafiltration element, the electrically controlled air valve is closed, the electrically controlled water valve is opened, the bidirectional flushing pump draws water towards the three-way valve, and the three-way valve opens the channel connected to the spiral flushing pipe.

9. The automatic circulating cleaning device for a single-household water purification system as described in claim 2, characterized in that: The connecting hole is located in the middle of the temporary water storage chamber. When the liquid level in the temporary water storage chamber drops below the connecting hole, air enters the ultrafiltration element through the connecting hole.

10. The automatic circulating cleaning device for a single-household water purification system as described in claim 1, characterized in that: The main filter is provided with a water inlet connector on its side wall, and a water inlet control valve is provided on the water inlet connector. The main filter is provided with a sewage outlet at its bottom, and a sewage discharge control valve is provided on the sewage outlet.

Images