TWI818838B - Backwashed, completely clean filter structure - Google Patents

Abstract

A filter core structure that is completely clean by backwashing. The filter core includes a filter cartridge and a flow disturbance unit. The filter cartridge is equipped with a filter unit inside. The filter cartridge is provided with a first through hole and a second through hole. The first through hole communicates with the inside of the filter unit. The first through hole is used for the output of purified water after filtering by the filter unit and also for the inflow of backwash water. The second through hole is connected to the outside of the filter unit. , the second through hole is used for the inflow of raw water and the discharge of backwash water. The flow spoiler unit is located on the inner side of the filter cartridge. When backwashing, the flow disturbance unit generates a local swirling water flow, which creates a back pressure effect, assisting the backwash water to push toward the head end of the filter unit, increasing the pressure difference between the head and tail of the filter core to form different internal and external pressure differences, and then the filter core is backwashed During the process, the same cleaning and cleaning effect is achieved at both ends of the filter element at nearly the same time, improving the backwash reducibility.

Description

Backwashed, completely clean filter structure

The present invention relates to the design of a filter core structure, and in particular, it refers to a filter core structure in which a flow disturbance unit generates a local swirling water flow, which creates a back pressure effect, and assists in pushing the backwash water toward the head end of the filter unit.

After a period of use of a commercially available water purifier, the sieve gaps of the filter material itself in the filter core are filled with adhering particulate sediments, resulting in a reduction in water filtration efficiency. Therefore, the filter material needs to be removed and cleaned regularly. Replacement with new products is relatively troublesome in terms of use and maintenance, and is not economical.

In order to improve the above-mentioned deficiencies in the use of water purifiers, the industry has developed new water purification products, such as Taiwan Patent Announcement No. M474561 "Water Purifier Filter Manual Cleaning Switching Device". This patented technical means achieves the effect of The main purpose is to connect the water inlet hole and the filter cartridge under normal conditions, and input the raw water into each filter cartridge through the pipe body for filtering, and then output the clean water through the pipe body connected to the water outlet hole for use; if you want to clean the filter core, dial Turn the switch valve on one side to close the water inlet and open the drainage hole, and use the filtered clean water on the other side to flow into the filter cartridge on that side for reverse flushing, and the sewage after backwashing will be discharged from the pipe body of the drainage hole. , that is, backflushing by changing the direction of the water flow, commonly known as backwash cleaning.

Although this patented technical method improves the trouble of frequently replacing the filter element of conventional water purifiers, extends the service life of the filter element, and does not require power consumption, but during the normal backwashing process, the filter element The tail end of the filter element is easier to clean because it withstands the larger hydraulic pressure impact of the backwash flow. However, under the larger hydraulic pressure impact force, the impurities in the filter core will be removed. The sieve holes of the filter core will be penetrated by the water flow and the filter material will reverse. After the washing water pressure is relieved, the water flowing through the head end of the filter element will flow quickly through the surface of the filter material, causing the backwash water flow to be unable to effectively penetrate through the sieve holes of the filter material, resulting in poor backwash cleaning effect and poor cleaning of the head. At the end position, that is, during the backwashing process, the head end of the filter element is unable to backwash due to the small impact of water pressure. The cleanliness of backwashing is poor, and it cannot be fully backwashed thoroughly. Therefore, the backwashing effect in this part is not ideal due to the structure of the filter core, and there is indeed room for improvement.

It is true that the inventor is based on the concept of continuous product research and innovation, based on many years of practical experience in product design and development, as well as active research and development thinking, and after countless actual tests and experiments, the invention was produced.

The purpose of the present invention is to provide a backwashing and completely clean filter core structure. The flow disturbance unit generates a local swirling water flow, which is a back pressure effect, causing different levels of production at the head and tail ends of the filter core to be cleaned. Due to the difference in internal and external pressure, the auxiliary backwash water flows through the filter core structure that is pushed toward the head end of the filter unit. Compared with the traditional backwash process, under the same water pressure conditions and the same backwash time control, a more complete and accurate result can be obtained. The backwash cleaning effect.

In order to achieve the above purpose, the present invention has a backwashing and completely clean filter core structure, which is provided with a filter core. The filter core structure includes a filter cartridge, a flow spoiler unit and a filter unit installed therein. It is characterized by: The filter cartridge is equipped with at least one filter unit inside. The filter cartridge is provided with a first through hole and a second through hole. The first through hole communicates with the inside of the filter unit. The first through hole is used for the filter unit. The filtered clean water is output, and at the same time, the backwash water flows in. The second through hole is connected to the outside of the filter unit. The second through hole is used for the raw water to flow in, and the backwash water flow is also provided. discharge; the spoiler unit is located on the inner side of the filter cartridge.

When the backwash water flows into the filter cartridge, it will impact the flow disturbance unit. The flow disturbance unit generates a local swirling water flow, which is a back pressure effect, assisting the backwash water to push toward the head end of the filter unit, and continuously push it upward to remove The impurities on the surface of the filter unit increase the pressure difference between the head end and the tail end of the filter core, and then during the backwashing process of the filter core, the same cleaning and cleaning effect is achieved at both ends of the filter core at nearly the same time, improving backwashing. Reducibility.

Other features and specific embodiments of the present invention will be further understood in the following detailed description with accompanying drawings.

1: filter core

1a: filter core

10:filter cartridge

11: First through hole

12:Second through hole

13: Connector

20:Spoiler unit

21, 22: Fins

30:Filter unit

40:Pipe fitting assembly unit

41: Positioning plate

42:Pedestal

43: Water inlet pipe body

44: Outlet pipe body

45: Drainage pipe body

46:Switching valve

Figure 1 is a three-dimensional appearance view of the present invention.

Figure 2 is an exploded view of the structure of the filter core and pipe fitting assembly unit of the present invention.

Figure 3 is an exploded view of the three-dimensional structure of the filter core of the present invention.

Figure 4 is a cross-sectional view of the filter element of the present invention entering water and performing backwashing.

Figure 5 is a schematic diagram of the water flow guide during the backwashing process of the filter core of the present invention.

Figure 6 is a diagram of the second structural embodiment of the present invention and its use example.

Figure 7 is a diagram showing various structural embodiments of the spoiler unit of the present invention.

The first structural embodiment of the present invention:

Please refer to Figures 1 to 3. The structure of the backwashed and completely clean filter core 1 of the present invention includes a filter cartridge 10, a flow spoiler unit 20 and a filter unit 30 installed therein.

The filter cartridge 10 is equipped with at least one filter unit 30 inside. The filter cartridge 10 is provided with a first Through hole 11 and second through hole 12. The first through hole 11 communicates with the inside of the filter unit 30. The first through hole 11 is used for the output of clean water after filtering by the filter unit 30, and also for backwashing. For the inflow of water, the second through hole 12 is connected to the outside of the filter unit 30. The second through hole 12 is used for the inflow of raw water and also for the discharge of backwash water.

The spoiler unit 20 is disposed on the inner side of the filter cartridge 10 .

In one embodiment, the spoiler unit 20 is a cylinder, and a plurality of upwardly inclined and protruding fins 21 are provided on the side surface of the cylinder ring.

In one embodiment, the spoiler unit 20 is a cylinder, and a plurality of annular fins 22 are provided at the bottom of the cylinder.

In one embodiment, the flow spoiler unit 20 and the filter cartridge 10 are integrally formed.

In one embodiment, the first through hole 11 and the second through hole 12 are provided on a joint 13, and the filter unit 30 is assembled through the joint 13. The joint 13 is arranged at the upper open portion of the filter cartridge 10.

In one embodiment, the first through hole 11 and the second through hole 12 are connected to a pipe assembly unit 40. The pipe assembly unit 40 includes a positioning plate 41, a base 42, a water inlet pipe body 43, A water outlet pipe body 44, a drainage pipe body 45, and a switching valve 46. The positioning plate 41 is used to fix the filter core 1 at the selected position on the wall where the filter device needs to be installed. The base 42 is used to set the inlet. Water pipe body 43, water outlet pipe body 44, drainage pipe body 45 and switching valve 46. The water inlet pipe body 43 is connected to the second through hole 12 for raw water to flow into the filter core 1; the water outlet pipe body 44 is connected to the first through hole 12. The through hole 11 is for the output of clean water filtered by the filter unit 30; the drainage pipe body 45 is used for the water flow and impurities discharged after the filter unit 30 has been backwashed; the switching valve 46 is used to selectively switch the water inlet pipe body 43 The second through hole 12 cannot be connected, and the second through hole 12 is connected to the drainage pipe body 45 so that the filter core 1 can be backwashed.

The detailed structure of the pipe assembly unit 40 is disclosed in the Taiwan Patent Publication cited in this case. Report No. M474561 "Manual Cleaning and Switching Device for Water Purifier Filters" has been detailed in the report and will not be repeated here.

The above is an introduction to each component of the present invention and its composition. Next, the use examples, features, and benefits of the present invention are introduced as follows:

Please refer to Figures 4 and 5. First, select the filter element 1 to switch to the backwash cleaning mode through the switching valve 46.

When switching to the backwash cleaning mode, the water inlet pipe body 43 cannot communicate with the second through hole 12, and the raw water cannot be input into the filter cartridge 10, so the water outlet pipe body 44 transports the filtered water from the other filter core 1a in Figure 1. The purified water obtained is input into the filter cartridge 10 .

When the backwash water flow is guided into the filter cartridge 10, it will impact the flow disturbance unit 20. The flow disturbance unit 20 generates a local swirling water flow, which is a back pressure effect, assisting the backwash water to push toward the head end of the filter unit 30. , continuously push upward to remove the impurities stuck on the surface of the filter unit 30, increase the pressure difference between the head end and the tail end of the filter core 1, and then the filter core 1 reaches the maximum pressure at nearly the same time during the backwashing process. The head and tail ends of the filter element 1 have the same cleaning and cleaning effect, improving the backwash reducibility.

Second structural embodiment of the present invention:

Please refer to Figure 6. Most of the structure of the second structural embodiment of the present invention is the same as that of the first structural embodiment of the present invention. The main difference is that the second through hole 12 is arranged below the filter cartridge 10; The flow unit 20 is a cone-shaped cylinder in cross section; the filter unit 30 is a hollow fiber membrane or other filter material.

Introduction to the usage features and benefits of the second structural embodiment of the present invention:

Please refer to Figure 6 (a). When the present invention filters raw water, the impurities stuck on the outer surface of the filter core will be evenly accumulated on the surface of the filter unit 30 due to the effect of water pressure.

As shown in (b) of Figure 6, impurities are accumulated on the surface of the filter unit 30 on average.

Please refer to Figure 6(c). When the present invention performs backwash cleaning, the inside of the filter unit 30 is unobstructed. After the water flow impacts the U-shaped end of the filter unit 30, the present invention increases the configuration of the spoiler unit 20. , a local swirling water flow will be generated outside the filter core, which is a back pressure effect, and the auxiliary backwash water will be pushed toward the head end of the filter unit 30 and continuously pushed upward to remove impurities on the surface of the filter unit 30, and the water flow after backwash, Impurities can be effectively discharged.

As shown in (d) of Figure 6, the present invention can improve the backwash reduction property.

Various structural embodiments of the spoiler unit of the present invention:

Please refer to Figure 7 (a). The spoiler unit 20 is a cylinder with a curved cross-section. When the backwash water flow impacts the U-shaped end of the filter unit 30, the water flow is squeezed outward at the same time. screen holes to remove external stuck impurities. At this time, the present invention adds the setting of the flow spoiler unit 20 in this example, which will generate a local swirling water flow outside the filter core, which is a back pressure effect, and can make the filter core 1 perform backwashing. During the process, the same cleaning and cleaning effect is achieved at both ends of the filter element 1 at approximately the same time.

Please refer to Figure 7 (b). The spoiler unit 20 is a cylinder with a trapezoidal cross-section, which can also achieve the same effect as the embodiment in Figure (a).

Please refer to Figure 7 (c). The spoiler unit 20 is a cylinder with an arc-shaped cross-section, which can also achieve the same effect as the embodiment in Figure (a).

Please refer to Figure 7 (d). The spoiler unit 20 is a cylinder with an inclined surface at the bottom, which can also achieve the same effect as the embodiment in Figure (a).

To sum up, the present invention can indeed achieve the expected purpose, fully exert the actual benefits, and enhance the industrial utilization value. It has indeed met the requirements for patent application and is filed in accordance with the law. Patent application.

However, the above are only preferred embodiments of the present invention, and should not be used to limit the scope of the present invention; therefore, any simple equivalent changes and modifications made based on the patent scope of the present invention and the content of the invention description , should still fall within the scope covered by the patent of this invention.

1: filter core

10:filter cartridge

11: First through hole

12:Second through hole

13: Connector

20:Spoiler unit

21, 22: Fins

30:Filter unit

Claims (10)

A filter core structure that is completely clean by backwashing. The filter core structure includes a filter cartridge, a flow spoiler unit and a filter unit installed therein. It is characterized by: The filter cartridge is equipped with at least one filter unit inside. The filter cartridge is provided with a first through hole and a second through hole. The first through hole communicates with the inside of the filter unit. The first through hole is used for the filter unit. The output of filtered clean water also provides for the inflow of backwash water. The second through hole is connected to the outside of the filter unit. The second through hole is used for the inflow of raw water and the discharge of backwash water at the same time; The spoiler unit is located on the inner side of the filter cartridge. As described in item 1 of the patent application, the backwashing and completely clean filter structure is characterized in that the flow spoiler unit is a cylinder, and a plurality of upwardly inclined and protruding fins are provided on the side surface of the cylinder ring. As described in item 1 of the patent application, a backwashed and completely clean filter structure is provided with a plurality of annular fins at the bottom of the cylinder. As described in item 1 of the patent application, the backwashing and completely clean filter core structure is characterized in that the flow spoiler unit and the filter cartridge are integrally formed. The backwashed and completely clean filter core structure described in item 1 of the patent application, wherein the first through hole and the second through hole are provided on a joint, and the filter unit is assembled by the joint, and the joint is configured on The open part on the upper side of the filter cartridge. As described in item 1 of the patent application, the backwashing and completely clean filter core structure is characterized in that the first through hole and the second through hole are connected to a pipe assembly unit, and the pipe assembly unit includes a positioning plate, a A base, a water inlet pipe body, a water outlet pipe body, a drainage pipe body, and a switching valve. The positioning plate is used to fix the filter core in a position. The base is used to set the water inlet pipe body, the water outlet pipe body, Drainage pipe body and switching valve. The water inlet pipe body is connected to the second through hole for raw water to flow into the filter core. The outlet pipe body is connected to the first through hole for the output of clean water filtered by the filter unit. The drainage pipe body is used for the water flow and impurities discharged after backwashing of the filter unit. The switching valve is used to selectively switch the filter unit. The second through hole is connected to the drainage pipe body and can perform backwash cleaning on the filter core. In the backwashed and completely clean filter core structure described in item 1 of the patent application, the second through hole is arranged below the filter cartridge. As described in item 1 of the patent application, the backwashing and completely clean filter core structure is provided, wherein the filter unit is a hollow fiber membrane. As described in item 1 of the patent application, the backwashing and completely clean filter structure is characterized in that the cross-sectional shape of the spoiler unit is a cylinder that is any one of a conical, curved, trapezoidal, and arc-shaped curved shape. As described in item 1 of the patent application, the backwashing and completely clean filter structure is characterized in that the flow spoiler unit is a cylinder with an inclined surface at the bottom.

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