Household water purifying device with hollow fiber nanofiltration membrane

Abstract

The utility model provides a hollow fiber nanofiltration membrane household water purification device, which is arranged among a home-entry water inlet pipe, a filtered water faucet and an unfiltered water faucet, and comprises a filter, the filter comprises a water inlet end, a filtered water outlet end and an unfiltered water outlet end, the home-entry water inlet pipe is respectively communicated with the water inlet end of the filter and the unfiltered water faucet through pipelines, a pump body is arranged between the home-entry water inlet pipe and the water inlet end of the filter, and a valve is arranged between the home-entry water inlet pipe and the unfiltered water faucet. The non-filtered water outlet end of the filter is communicated with a pipeline between the valve and the non-filtered water faucet, and the filtered water outlet end of the filter is communicated with a filtered water outlet faucet. According to the utility model, the unfiltered water outlet end is communicated with the pipeline between the home-entry water inlet pipe and the unfiltered water faucet, and meanwhile, the filter can be conveniently cleaned by matching with the valve, so that the service life of the filter is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of water purification device technology, and in particular to a hollow fiber nanofiltration membrane household water purification device. Background Technology

[0002] With industrial and urban development, water source safety has become a focus. For end users of water resources, water pollution caused by primary or secondary water supply pipelines is becoming increasingly common. As a result, household water purification devices have emerged. The mainstream water purification equipment on the market can be divided into pressurized water purification and atmospheric pressure water purification according to whether or not it has a pump.

[0003] Currently, most household water purification devices use RO reverse osmosis membrane water purifiers. Because the water flow rate is relatively low, a storage tank is required, increasing the space required. Therefore, another type of pressurized water purification device, the nanofiltration membrane water purifier, was developed. It does not require a storage tank, but the filter cartridge is inconvenient to clean during use, resulting in a shorter filter cartridge lifespan. Utility Model Content

[0004] The main purpose of this invention is to provide a hollow fiber nanofiltration membrane household water purification device to solve the problem of inconvenient cleaning of filter elements in the prior art.

[0005] To solve the above problems, this utility model adopts the following technical solution: a hollow fiber nanofiltration membrane household water purification device, installed between the inlet water pipe and the filtered and unfiltered water taps, includes a filter. The filter includes an inlet end, a filtered water outlet end, and an unfiltered water outlet end. The inlet water pipe is connected to the inlet end of the filter and the unfiltered water tap through pipelines. A pump body is provided between the inlet water pipe and the inlet end of the filter. A valve is provided between the inlet water pipe and the unfiltered water tap. The unfiltered water outlet end of the filter is connected to the pipeline between the valve and the unfiltered water tap. The filtered water outlet end is connected to the filtered water outlet tap.

[0006] Furthermore, the water purification device also includes a frame assembly, which includes a U-shaped frame and a support plate fixed inside the U-shaped frame, with the filter disposed on the support plate.

[0007] Furthermore, the support plate has a rectangular frame structure, and the opposite sides of the support plate are respectively provided with slots that are adapted to the outer wall of the filter, and the axial ends of the filter are accommodated in the slots.

[0008] Furthermore, the U-shaped frame located at the four corners of the support plate is provided with multiple through holes, which are evenly arranged along the height direction of the U-shaped frame. The U-shaped frame is provided with multiple first bolts, which pass through the corresponding through holes and are fixedly connected to the support plate.

[0009] Furthermore, a connecting plate is fixedly provided on one side of the pump body, and the connecting plate is fixedly connected to the support plate through a buffer assembly.

[0010] Furthermore, the connecting plate has through holes at its four corners. The buffer assembly includes four axially penetrating rubber blocks and four second bolts. The four rubber blocks are respectively inserted into the four through holes. The two ends of the rubber blocks are located outside the through holes, and the outer diameter of the two ends of the rubber blocks is larger than the inner diameter of the through holes. The four second bolts pass through the four rubber blocks and are fixedly connected to the connecting plate.

[0011] Furthermore, a compression spring is fitted on the outside of the second bolt, and the two ends of the compression spring abut against the end of the second bolt away from the connecting plate and the rubber block, respectively.

[0012] The beneficial effects of this utility model are:

[0013] 1. By connecting the unfiltered water outlet to the inlet water pipe and the unfiltered faucet, and using a valve, the filter can be easily cleaned, thereby extending its service life.

[0014] 2. By setting up a U-shaped frame and support plate, the filter can be protected, and it can also be fixed in a semi-open manner, which facilitates installation and later maintenance.

[0015] 3. By setting up a buffer component, the pump body can buffer the vibration to a certain extent, which can reduce the transmission of vibration. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of the working process of the hollow fiber nanofiltration membrane household water purification device of this utility model.

[0018] Figure 2 This is a schematic diagram of the installation structure of the hollow fiber nanofiltration membrane household water purification device of this utility model.

[0019] Figure 3 This is a schematic diagram of the support frame structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the installation structure of the motor mount of this utility model.

[0021] Explanation of reference numerals in the attached figures

[0022] 1. Inlet water pipe; 2. Filtered faucet; 3. Unfiltered faucet; 4. Frame assembly; 41. U-shaped frame; 411. Through hole; 412. First bolt; 42. Support plate; 421. Slot; 5. Filter; 51. Inlet end; 52. Filtered water outlet end; 53. Unfiltered water outlet end; 6. Pump body; 61. Connecting plate; 7. Valve; 8. Buffer assembly; 81. Rubber block; 82. Second bolt; 83. Compression spring. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Please see Figure 1 and Figure 2 As shown, a hollow fiber nanofiltration membrane household water purification device is installed between the inlet water pipe 1 and the filtered water faucet 2 and the unfiltered water faucet 3. The inlet water pipe 1 is existing technology and is used to introduce municipal water into the user's room. The filtered water faucet 2 is used to discharge purified water (drinking water) filtered by the water purification device, while the unfiltered water faucet 3 is used to discharge unfiltered water (rinsing water that cannot be directly consumed). Further details are omitted here.

[0025] The water purification device in this embodiment includes a frame assembly 4, a filter 5, a pump body 6, and a valve 7. Specifically, the filter 5 is a hollow fiber nanofiltration membrane filter 5 in the prior art, which includes a shell and a nanofiltration membrane located inside the shell. The surface of the nanofiltration membrane is densely covered with many tiny micropores. The size of these micropores can be precisely controlled. Under a certain pressure, the nanofiltration membrane only allows water and small molecules to pass through, thereby achieving the purpose of water purification and separation.

[0026] Specifically, the filter 5 includes an inlet end 51, a filtered water outlet end 52, and an unfiltered water outlet end 53. The inlet end 51 is used to receive water from the household water inlet pipe 1, the filtered water outlet end 52 is used to discharge the filtered purified water, and the unfiltered water outlet end 53 is used to directly discharge the water containing impurities that has been trapped by the nanofiltration membrane inside the filter 5. The household water inlet pipe 1 is connected to the inlet end 51 of the filter 5 and the unfiltered water tap 3 through a pipeline. The pump body 6 is installed between the household water inlet pipe 1 and the inlet end 51 of the filter 5 to pressurize the water entering the filter 5, so that the water in the filter 5 passes through the hollow fiber nanofiltration membrane as quickly as possible, thereby increasing the water flow rate.

[0027] A valve 7 is installed between the inlet water pipe 1 and the unfiltered faucet 3. The unfiltered water outlet 53 of the filter 5 is connected to the pipeline between the valve 7 and the unfiltered faucet 3. In other words, the unfiltered water outlet of the filter 5 is connected to the pipeline between the inlet water pipe 1 and the unfiltered faucet 3, and the connection point is located between the valve 7 and the unfiltered faucet 3. Thus, the filtered water is discharged through the filtered water outlet 52, while foreign objects trapped in the filter 5 can enter the unfiltered faucet 3 through the pipeline between the inlet water pipe 1 and the unfiltered faucet 3, and be discharged through the unfiltered faucet 3.

[0028] During implementation, when a user needs purified water, they open the filtered water outlet valve. Pump 6 pumps the water from the inlet pipe 1 into the filter 5, and the filtered purified water is discharged through the filtered water faucet 2. (At this time, the unfiltered water faucet 3 is closed, so the water containing impurities trapped by the nanofiltration membrane inside the filter cannot be discharged and will remain in the filter 5).

[0029] When a user needs to use municipal water directly, they can turn on the unfiltered water tap (valve 7 on the pipe between the inlet water pipe 1 and the unfiltered water tap 3 is in the open state, while the filtered water tap 2 is in the closed state). At this time, the water in the inlet water pipe 1 can be discharged directly from the unfiltered water tap.

[0030] When cleaning filter 5 (draining water containing impurities trapped by the nanofiltration membrane and rinsing the nanofiltration membrane inside filter 5), first close valve 7 between the inlet water pipe 1 and the unfiltered water tap 3, then open the unfiltered water tap 3. Water from the inlet water pipe 1 is then pumped into filter 5 via pump body 6. Since the filter tap 2 is closed, water from filter 5 is discharged through the unfiltered water outlet 53 of filter 5 to the unfiltered water tap 3. During this process, the surface of the nanofiltration membrane inside filter 5 is rinsed, and impurities within filter 5 are also discharged.

[0031] It should be noted that the pump body 6 in this application is a self-priming booster pump in the prior art, or a pressure pump equipped with a mechanical water pump pressure controller, so that the pump body 6 can start automatically when the unfiltered water faucet 3 or the filtered water faucet 2 is turned on, thereby ensuring the water flow rate. This utility model, by connecting the unfiltered water outlet 53 to the pipeline between the inlet water pipe 1 and the unfiltered water faucet 3, and simultaneously using the valve 7, allows for convenient cleaning of the filter 5, thereby extending the service life of the filter 5.

[0032] Please see Figure 2 and Figure 3As shown, in this embodiment, the water purification device also includes a frame assembly 4 for supporting the filter 5. Specifically, the frame assembly 4 includes a U-shaped frame 41 and a support plate 42 fixed inside the U-shaped frame 41, with the filter 5 mounted on the support plate 42. The U-shaped frame 41 and support plate 42 protect the filter 5. Furthermore, compared to the prior art where the filter 5 is assembled inside a housing, the U-shaped frame 41 and support plate 42 provide a semi-open mounting for the filter 5, further facilitating installation and subsequent maintenance.

[0033] In this embodiment, the support plate 42 has a rectangular frame structure. On opposite sides of the support plate 42, there are slots 421 that fit the outer wall of the filter 5. The axial ends of the filter 5 are accommodated within the slots 421 to support the filter 5. Preferably, the U-shaped frames 41 located at the four corners of the support plate 42 are provided with multiple through holes 411. These through holes 411 are evenly arranged along the height direction of the U-shaped frames 41. Multiple first bolts 412 are provided on the U-shaped frames 41 (in this embodiment, two first bolts 412 are provided on each of the four corners of the support plate 42). The multiple first bolts 412 pass through the corresponding through holes 411 and are fixedly connected to the support plate 42. By providing multiple through holes 411, the horizontal height of the support plate 42 can be easily adjusted, thus better adapting to different installation environments of the filter 5.

[0034] Please refer to Figure 1 and Figure 4 As shown, in this embodiment, a connecting plate 61 is fixedly provided on one side of the pump body 6. The connecting plate 61 is fixedly connected to the support plate 42 through a buffer assembly 8. Specifically, the connecting plate 61 has through holes at its four corners (not shown in the figure). The buffer assembly 8 includes four axially penetrating rubber blocks 81 and four second bolts 82. The four rubber blocks 81 are respectively inserted into the four through holes, with the two ends of the rubber blocks 81 located outside the two ends of the through holes, and the outer diameter of the two ends of the rubber blocks 81 being larger than the inner diameter of the through holes. The four second bolts 82 pass through the four rubber blocks 81 and are fixedly connected to the connecting plate 61. By setting the rubber blocks 81 as a buffer between the connecting plate 61 and the support plate 42, the noise generated by the vibration of the pump body 6 during operation can be reduced.

[0035] Furthermore, a compression spring 83 is fitted around the outside of the second bolt 82, with both ends of the compression spring 83 abutting against the end of the second bolt 82 away from the connecting plate 61 and the rubber block 81, respectively. By setting the compression spring 83, the vibration of the pump body 6 is buffered to a certain extent, which can reduce the transmission of vibration.

[0036] This utility model's water purification device has a simple structure and is easy to install. It is suitable for use in homes, schools, workplaces, and other places, as well as in military preparedness, emergency rescue, field operations, natural disasters such as earthquakes and floods, and outdoor tourism and adventure. It provides simple, quick, and clean drinking water for people away from home; it is free of germs, scale, and heavy metals, making it safe to drink.

[0037] The above description is only a preferred embodiment of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A hollow fiber nanofiltration membrane household water purification device, installed between the inlet water pipe and both the filtered and unfiltered water taps, characterized in that... The system includes a filter, which has an inlet, a filtered water outlet, and an unfiltered water outlet. An inlet water pipe is connected to the inlet of the filter and an unfiltered water faucet via a pipeline. A pump is installed between the inlet water pipe and the inlet of the filter. A valve is installed between the inlet water pipe and the unfiltered water faucet. The unfiltered water outlet of the filter is connected to the pipeline between the valve and the unfiltered water faucet. The filtered water outlet is connected to the filtered water faucet.

2. The hollow fiber nanofiltration membrane household water purification device according to claim 1, characterized in that, The water purification device also includes a frame assembly, which includes a U-shaped frame and a support plate fixed inside the U-shaped frame, and the filter is disposed on the support plate.

3. The hollow fiber nanofiltration membrane household water purification device according to claim 2, characterized in that, The support plate has a rectangular frame structure, and the opposite sides of the support plate are respectively provided with slots that are adapted to the outer wall of the filter. The axial ends of the filter are accommodated in the slots.

4. The hollow fiber nanofiltration membrane household water purification device according to claim 3, characterized in that, The U-shaped frame located at the four corners of the support plate is provided with multiple through holes, which are evenly arranged along the height direction of the U-shaped frame. The U-shaped frame is provided with multiple first bolts, which pass through the corresponding through holes and are fixedly connected to the support plate.

5. The hollow fiber nanofiltration membrane household water purification device according to claim 3 or 4, characterized in that, A connecting plate is fixedly provided on one side of the pump body, and the connecting plate is fixedly connected to the support plate through a buffer assembly.

6. The hollow fiber nanofiltration membrane household water purification device according to claim 5, characterized in that, The connecting plate has through holes at its four corners. The buffer assembly includes four axially penetrating rubber blocks and four second bolts. The four rubber blocks are respectively inserted into the four through holes. The two ends of the rubber blocks are located outside the through holes, and the outer diameter of the two ends of the rubber blocks is larger than the inner diameter of the through holes. The four second bolts pass through the four rubber blocks and are fixedly connected to the connecting plate.

7. The hollow fiber nanofiltration membrane household water purification device according to claim 6, characterized in that, A compression spring is fitted on the outside of the second bolt, and the two ends of the compression spring abut against the end of the second bolt away from the connecting plate and the rubber block, respectively.

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