Filter cartridges, filters, filtration systems and cleaning systems

Abstract

This invention discloses a filter element, a filter, a filtration system, and a cleaning system. The filter element includes: a stirring device; a continuous adsorption carrier disposed around the stirring device; and a particulate adsorption carrier filled between the continuous adsorption carrier and the stirring device. During liquid filtration, the stirring device stirs the particulate adsorption carrier. Therefore, this invention can improve the adsorption rate of the particulate adsorption carrier and prevent filter element clogging.

Description

Technical Field

[0001] The present invention relates to a filter element, a filter including the filter element, a filtration system including the filter, and a cleaning system including the filtration system. Background Technology

[0002] In existing technologies, industrial cleaning uses large amounts of water to remove residual metal ions and organic pollutants from the surface of parts (such as electroplating, chemical plating, and cleaning of various electronic components). The main method for wastewater recycling is to first use ordinary industrial filter cartridges for online coarse filtration in real time. When the pollutants in the wash water accumulate to a high concentration and the cleaning effect decreases, or even aggravates the pollution of the cleaned parts, the wastewater with highly accumulated pollutants is replaced and collected periodically and treated off-line (such as at a sewage treatment plant) to meet discharge standards.

[0003] The shortcomings of existing industrial filter cartridges are: the filter cartridge structure is fixed and simple, the filter media is single, the adsorption saturation is low, and they generally use wire-wound or melt-blown polypropylene resin or activated carbon. The timeliness is barely enough to filter clean tap water for domestic use. However, the pollutants in industrial cleaning water are complex and their concentration keeps accumulating and increasing. The filter cartridge is very easy to adsorb and clog, and it cannot adsorb pollutants efficiently for a long time. As a result, the online filtration effect in industrial cleaning is very small, resulting in insufficient cleanliness of parts. In order to ensure the cleaning effect, it is necessary to frequently change the water and recycle it off-line, which results in high process costs, large waste discharge, and environmental protection risks. For example, severe ion contamination can cause electronic components to have low insulation resistance and short circuits. High-precision industries such as semiconductors almost entirely use running water for cleaning, resulting in high wastewater discharge and significant environmental pressure. High-pollution processes such as electroplating are not just a matter of cleanliness; they can also cause a decrease in coating adhesion and an increase in porosity, or even peeling. The failure mechanism is that before metal electroplating deposition, high-potential metal ions such as silver ions and gold ions are very likely to be deposited on the surface of the high-potential metal to be plated. The displacement layer is extremely uneven, weak, loose and porous.

[0004] Existing filter elements typically have the following defects:

[0005] 1) Not suitable for filtering water with complex pollutants: The filter element has a single carrier and is mostly physical adsorption. It mainly filters fine particles such as large polymer molecules or colloids, and has less adsorption of metal ions.

[0006] 2) Inefficient adsorption filtration and large sewage discharge: The filter element has a fixed and simple structure. The high-pressure water chamber inside the filter element is a simple hollow cylinder. When the raw water is pressed towards the filter adsorption carrier, the adsorption carrier near the high-pressure water chamber will preferentially adsorb and block it, preventing the adsorption carrier near the surface of the filter element from continuing to adsorb. At the same time, the pressure in the high-pressure water chamber rises, which has to be frequently triggered to open the pressure relief and sewage discharge valve and the backwash valve. After depressurization, the filter element is backwashed to unclog the adsorption carrier and allow the unclogged sewage to flow to the heavily polluted wastewater pool for centralized treatment.

[0007] 3) Cannot recover precious metal ions: The adsorbed metal ions are not easy to recover and cannot be used for the recovery of precious metal ions.

[0008] 4) Filter cartridges cannot be desorbed and reused: Most filter cartridges are used once and then disposed of as solid waste, resulting in a lot of waste. Summary of the Invention

[0009] The purpose of this invention is to solve at least one aspect of the aforementioned problems and defects existing in the prior art.

[0010] According to one aspect of the present invention, a filter element is provided, comprising: a stirring device; a continuous adsorption carrier disposed around the stirring device; and a particulate adsorption carrier filled between the continuous adsorption carrier and the stirring device, wherein the stirring device stirs the particulate adsorption carrier during the filtration of liquid.

[0011] According to an exemplary embodiment of the present invention, the stirring device includes: a stirring rod; and a driving device connected to the stirring rod, the driving device being used to drive the stirring rod to rotate, so as to stir the particulate adsorbent carrier by the stirring rod.

[0012] According to another exemplary embodiment of the present invention, the driving device is an electric driving device or a liquid pressure driving device.

[0013] According to another exemplary embodiment of the invention, the stirring device includes: a worm having a helical hollow cavity and micropores distributed on its surface communicating with the hollow cavity; and a turbine connected to the inlet end of the worm and in fluid communication with the hollow cavity of the worm, the continuous adsorbent carrier being arranged around the worm and the turbine, the turbine and the worm being adapted to rotate under the action of the inflowing liquid to vortex agitate the particulate adsorbent carrier.

[0014] According to another exemplary embodiment of the present invention, the continuous adsorption carrier comprises a resin membrane, a porous meltblown resin, a porous ceramic sintered structure, or a wire-wound braid.

[0015] According to another exemplary embodiment of the invention, the particulate adsorbent carrier comprises resin particles, activated carbon particles, or mixtures thereof.

[0016] According to another exemplary embodiment of the present invention, the particulate adsorbent carrier is in the form of a smooth-surfaced sphere.

[0017] According to another aspect of the present invention, a filter is provided, comprising: a housing having an inlet pipe and an outlet pipe; and the aforementioned filter element installed in the housing. Liquid to be filtered flows into the filter element via the inlet pipe, and filtered liquid flows out via the outlet pipe.

[0018] According to another aspect of the present invention, a filter is provided, comprising: a barrel having an inlet pipe and an outlet pipe; and the aforementioned filter element, installed in the barrel. Liquid to be filtered flows into a turbine and worm gear of the filter element via the inlet pipe, and filtered liquid flows out via the outlet pipe; during filtration, the turbine and worm gear rotate under the action of the liquid flowing in via the inlet pipe to create a vortex agitation of the particulate adsorbent carrier.

[0019] According to an exemplary embodiment of the present invention, when filtering liquid, the liquid seeps out from the micropores of the worm gear and flows through the particulate adsorbent carrier and the continuous adsorbent carrier to filter the liquid through the particulate adsorbent carrier and the continuous adsorbent carrier.

[0020] According to another exemplary embodiment of the present invention, the tank body further comprises a backwash pipe and a drain pipe, the backwash pipe communicating with the inner cavity of the tank body, and the drain pipe communicating with the outlet of the worm gear; a backwash valve and a drain valve are respectively installed on the backwash pipe and the drain pipe, and the backwash valve and the drain valve are in a closed state when the filter filters the liquid.

[0021] According to another exemplary embodiment of the present invention, when the liquid pressure in the worm gear rises to a predetermined pressure, the backwash valve and the drain valve are opened, and the liquid that enters the tank through the backwash pipe flows back into the worm gear from the outside of the filter element, and the liquid flowing back into the worm gear is discharged through the drain pipe, thereby realizing the backwashing of the filter element.

[0022] According to another exemplary embodiment of the invention, during backwashing of the filter element, the turbine and worm rotate under the action of liquid flowing in through the inlet pipe to vortex agitate the particulate adsorbent carrier.

[0023] According to another exemplary embodiment of the present invention, the inlet end of the turbine is rotatably mounted to the liquid inlet pipe of the barrel via a first bearing and is in fluid communication with the liquid inlet pipe; the outlet end of the worm gear is rotatably mounted to the drain pipe of the barrel via a second bearing and is in fluid communication with the drain pipe.

[0024] According to another exemplary embodiment of the present invention, the filter element further includes a cylindrical outer frame in which the continuous adsorption carrier and the particulate adsorption carrier are housed and supported, and the two ends of the outer frame are detachably fixed to the inlet pipe and the drain pipe of the barrel.

[0025] According to another exemplary embodiment of the present invention, the particulate adsorbent carrier is in the form of a smooth-surfaced sphere.

[0026] According to another aspect of the present invention, a filtration system is provided, comprising: the aforementioned filter; a liquid supply tank for supplying liquid to the filter; and a pump having an inlet connected to the liquid supply tank, a first outlet connected to an inlet pipe of the filter, and a second outlet connected to an inlet pipe and a backwash pipe of the filter, respectively.

[0027] According to an exemplary embodiment of the present invention, when filtering liquid with the filter, the liquid pumped from the first outlet of the pump flows into the turbine and worm gear of the filter element via the inlet pipe of the filter.

[0028] According to another exemplary embodiment of the present invention, the filtration system further includes a wastewater tank, and the drain pipe of the filter is connected to the wastewater tank; during backwashing of the filter element, liquid in the hollow inner cavity of the worm gear is discharged into the wastewater tank via the drain pipe.

[0029] According to another exemplary embodiment of the invention, during backwashing of the filter element, liquid pumped from the first outlet of the pump flows into the turbine and worm gear of the filter element via the inlet pipe of the filter, and liquid pumped from the second outlet of the pump flows into the filter housing via the backwash pipe of the filter.

[0030] According to another aspect of the present invention, a cleaning system is provided, comprising: the aforementioned filtration system; and a cleaning tank having an inlet communicating with the outlet pipe of a filter of the filtration system. Filtered liquid flows into the cleaning tank via the outlet pipe of the filter to clean workpieces in the cleaning tank.

[0031] According to an exemplary embodiment of the invention, the outlet of the cleaning tank is connected to the supply tank to allow the cleaned liquid to flow back into the supply tank and be filtered again by the filter.

[0032] In the foregoing exemplary embodiments of the present invention, the particulate adsorbent carrier can be stirred using a stirring device. Therefore, the present invention can improve the adsorption rate of the particulate adsorbent carrier and prevent filter clogging.

[0033] Other objects and advantages of the invention will become apparent from the following description of the invention with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the invention. Attached Figure Description

[0034] Figure 1 A schematic diagram showing a filtering system according to an exemplary embodiment of the present invention;

[0035] Figure 2 A schematic diagram of a cleaning system according to an exemplary embodiment of the present invention is shown. Detailed Implementation

[0036] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. In this specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as a limitation thereof.

[0037] Furthermore, in the following detailed description, numerous specific details are set forth for ease of explanation to provide a thorough understanding of the embodiments disclosed herein. However, it will be apparent that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and apparatuses are illustrated to simplify the figures.

[0038] According to a general technical concept of the present invention, a filter element is provided, comprising: a stirring device; a continuous adsorption carrier disposed around the stirring device; and a particulate adsorption carrier filled between the continuous adsorption carrier and the stirring device, wherein the stirring device stirs the particulate adsorption carrier during the filtration of liquid.

[0039] Figure 1 A schematic diagram of a filtering system according to an exemplary embodiment of the present invention is shown.

[0040] like Figure 1 As shown in the illustrated embodiment, the filtration system mainly includes a pump 1, a filter 10, and a liquid supply tank 5. The filter 10 mainly includes a tank body 11 and a filter element 12 installed in the tank body 11. For easy replacement, the filter element 12 is installed in the tank body 11 in a detachable manner.

[0041] like Figure 1 As shown in the illustrated embodiment, the filter element 12 mainly includes: stirring devices 121 and 122, a continuous adsorption carrier 124, and a particulate adsorption carrier 123. The continuous adsorption carrier 124 is arranged around the stirring devices 121 and 122. The particulate adsorption carrier 123 is filled between the continuous adsorption carrier 124 and the stirring devices 121 and 122. When filtering liquid, the stirring devices 121 and 122 stir the particulate adsorption carrier 123. This can improve the adsorption rate of the particulate adsorption carrier 123 and prevent the filter element 12 from clogging.

[0042] like Figure 1 As shown, in an exemplary embodiment of the present invention, the stirring devices 121 and 122 may include a stirring rod and a driving device. The driving device is connected to the stirring rod and is used to drive the stirring rod to rotate, thereby stirring the particulate adsorbent carrier 123. The driving device may be an electrically driven device (e.g., a motor) or a liquid pressure driven device.

[0043] like Figure 1 As shown in the illustrated embodiment, the stirring rod of the stirring devices 121 and 122 is a worm gear 121, and the driving device for stirring 121 and 122 is a turbine 122. The worm gear 121 has a helical hollow inner cavity and micropores distributed on its surface that communicate with the hollow inner cavity. The turbine 122 is connected to the inlet end of the worm gear 121 and is in fluid communication with the hollow inner cavity of the worm gear 121. A continuous adsorption carrier 124 is arranged around the worm gear 121 and the turbine 122. In the illustrated embodiment, the continuous adsorption carrier 124 is cylindrical. Particulate adsorption carrier 123 fills the space between the continuous adsorption carrier 124 and the worm gear 121.

[0044] like Figure 1 As shown in the illustrated embodiment, the turbine 122 and worm gear 121 are adapted to rotate under the action of the inflowing liquid to create a vortex agitation on the particulate adsorbent carrier 123. In the illustrated embodiment, since the liquid output from the pump 1 has a certain pressure, when the liquid enters the turbine 122, it drives the turbine 122 to rotate, which in turn drives the worm gear 121 to rotate as well. In this way, the particulate adsorbent carrier 123 can be continuously agitated while filtering the liquid or backwashing the filter element, thereby improving the filtration and backwashing effects of the filter element and preventing filter element clogging.

[0045] like Figure 1 As shown in the illustrated embodiment, the filter 10 has a barrel 11 with an inlet pipe 11a and an outlet pipe 11b. The liquid to be filtered flows into the turbine 122 and worm gear 121 of the filter element 12 through the inlet pipe 11a, and the filtered liquid flows out through the outlet pipe 11b. During liquid filtration, the turbine 122 and worm gear 121 rotate under the action of the liquid flowing in through the inlet pipe 11a to create a vortex agitation on the particulate adsorbent carrier 123.

[0046] like Figure 1 As shown in the illustrated embodiment, during liquid filtration, the liquid seeps out from the micropores of the worm gear 121 and flows through the particulate adsorption carrier 123 and the continuous adsorption carrier 124, thereby filtering the liquid through the particulate adsorption carrier 123 and the continuous adsorption carrier 124. The filtered liquid seeps out from the continuous adsorption carrier 124 into the inner cavity of the tank 11, and finally flows out from the liquid outlet pipe 11b of the tank 11.

[0047] like Figure 1 As shown in the illustrated embodiment, the tank 11 also includes a backwash pipe 11c and a drain pipe 11d. The backwash pipe 11c communicates with the inner cavity of the tank 11. The drain pipe 11d communicates with the outlet of the worm gear 121. A backwash valve 3 is installed on the backwash pipe 11c, and a drain valve 4 is installed on the drain pipe 11d. The backwash valve 3 and the drain valve 4 are in a closed state when the filter 10 filters the liquid.

[0048] like Figure 1 As shown in the illustrated embodiment, when the particulate adsorption carrier 123 and the continuous adsorption carrier 124 in the filter element 12 become saturated or clogged, the liquid pressure in the worm gear 121 will increase. When the liquid pressure in the worm gear 121 rises to a predetermined pressure, the backwash valve 3 and the drain valve 4 will be triggered to open. At this time, liquid will enter the tank 11 through the backwash pipe 11c. The liquid entering the tank 11 through the backwash pipe 11c will flow back from the outside of the filter element 12 into the worm gear 121 inside it, and the liquid flowing back into the worm gear 121 will be discharged through the drain pipe 11d, thereby achieving backwashing of the filter element 12.

[0049] like Figure 1 As shown in the illustrated embodiment, during backwashing of the filter element 12, the turbine 122 and worm gear 121 rotate under the action of the liquid flowing in through the inlet pipe 11a, thereby creating a vortex agitation on the particulate adsorbent carrier 123. This improves the backwashing effect of the particulate adsorbent carrier 123 and the continuous adsorbent carrier 124 and extends the service life of the filter element 12.

[0050] like Figure 1 As shown in the illustrated embodiment, the inlet end of the turbine 122 is rotatably mounted to the inlet pipe 11a of the tank 11 via a first bearing 125 and is in fluid communication with the inlet pipe 11a. The outlet end of the worm gear 121 is rotatably mounted to the drain pipe 11d of the tank 11 via a second bearing 126 and is in fluid communication with the drain pipe 11d.

[0051] like Figure 1 As shown in the illustrated embodiment, the filter element 12 further includes a cylindrical outer frame 120. A continuous adsorption carrier 124 and a particulate adsorption carrier 123 are housed and supported within the outer frame 120. In an exemplary embodiment of the invention, both ends of the outer frame 120 are detachably fixed to the inlet pipe 11a and the drain pipe 11d of the tank body 11.

[0052] like Figure 1 As shown in the illustrated embodiment, in order to improve the rolling properties of the particulate adsorbent 123 when stirred, the particulate adsorbent 123 can be in the shape of a smooth sphere. However, the present invention is not limited to this, and the particulate adsorbent 123 can also have other suitable shapes.

[0053] like Figure 1 As shown, in the illustrated embodiment, pump 1 pumps liquid from supply tank 5 to filter 10. Pump 1 has an inlet 1a connected to supply tank 5, a first outlet 1b connected to inlet pipe 11a of filter 10, and a second outlet 1c connected to backwash pipe 11c of filter 10.

[0054] like Figure 1 As shown in the illustrated embodiment, when filtering liquid with filter 10, the liquid pumped from the first outlet 1b of pump 1 flows into the turbine 122 and worm gear 121 of filter element 12 via the inlet pipe 11a of filter 10.

[0055] like Figure 1 As shown in the illustrated embodiment, the filtration system further includes a wastewater tank 2, and the drain pipe 11d of the filter 10 is connected to the wastewater tank 2. During backwashing of the filter element 12, the liquid in the hollow inner cavity of the worm gear 121 is discharged into the wastewater tank 2 via the drain pipe 11d.

[0056] like Figure 1 As shown in the illustrated embodiment, during backwashing of the filter element 12, the liquid pumped from the first outlet 1b of the pump 1 flows into the turbine 122 and worm gear 121 of the filter element 12 via the inlet pipe 11a of the filter 10, and the liquid pumped from the second outlet 1c of the pump 1 flows into the barrel 11 of the filter 10 via the backwash pipe 11c of the filter 10.

[0057] Figure 2 A schematic diagram of a cleaning system according to an exemplary embodiment of the present invention is shown.

[0058] like Figure 2 As shown in the illustrated embodiment, the cleaning system mainly includes Figure 1 The system includes a filtration system and a cleaning tank 6. The cleaning tank 6 has an inlet communicating with the outlet pipe 11b of the filter 10 of the filtration system. Filtered liquid flows into the cleaning tank 6 through the outlet pipe 11b of the filter 10 to clean the workpieces in the cleaning tank. In an exemplary embodiment of the invention, the workpieces to be cleaned can be electroplated workpieces.

[0059] like Figure 2 As shown in the illustrated embodiment, the outlet of the cleaning tank 6 is connected to the supply tank 5 to allow the cleaned liquid to flow back into the supply tank 5 and be filtered again by the filter 10. This constitutes a circulating cleaning system.

[0060] like Figure 1 and Figure 2As shown in an exemplary embodiment of the present invention, a novel filter element has been developed focusing on the purification of electroplating wash water. Its outer layer can be filled with a continuous structure such as a resin membrane, porous melt-blown resin, porous ceramic sintering structure, or wire-wound braid. The middle layer can be filled with a random mixture of single or multiple resin particles or activated carbon particles, simultaneously possessing both physical and chemical adsorption capabilities. The inner layer structure is no longer a traditional hollow cylindrical structure used only for water inlet; instead, it consists of a turbine and a hollow vortex rod. While serving as a water inlet channel, the water pressure from the incoming water drives the turbine and hollow vortex rod to rotate, generating vortices that agitate the resin particles, improving the resin adsorption rate and preventing clogging. Simultaneously, the vortex agitation can also enhance the backwashing of the adsorption carrier, increasing the number of times the filter element can be reused. The filter element frame can be reused until physical damage occurs; only the resin membrane or resin particles or other adsorption carriers need to be replaced. The selected adsorption carrier can selectively adsorb pollutants based on their composition in the wastewater. For example, polypropylene resin can be used to adsorb large molecular clusters such as organic oil or inorganic precipitates, while activated carbon can adsorb heavy metal ions and pigments. Once the thiourea resin (PDTU) has reached saturation for complexing and adsorbing precious metal ions such as gold and silver, the filter element can be removed for desorption and recovery of the precious metals. The vortex agitation further enhances the desorption process. The design of this novel filter element is compatible with most filter cartridges on the market, eliminating the need for replacing the filter cartridge.

[0061] like Figure 1 and Figure 2 As shown in the illustrated embodiment, the new filter element 12 is installed into the filter housing 11, and the bearings 125 at both ends of the filter element 12 are respectively fixed to the liquid inlet pipe 11a and the pressure relief and drain pipe 11d of the filter housing 11 with clamps. Here, the bearings 125 are made of wear-resistant materials such as ceramic or mold steel, and are not disposable. When replacing the filter element 12, they can be replaced with new filter elements for repeated use.

[0062] like Figure 1 and Figure 2 As shown in the illustrated embodiment, liquid is drawn out under high pressure by water pump 1 and enters turbine 122 through inlet pipe 11a. Turbine 122 drives worm gear 121 to rotate, generating vortex agitation to stir the particulate adsorbent carrier 123. Here, turbine 122 and worm gear 121 are made of plastic or metal, 3D printed or machined. Worm gear 121 is hollow with a porous surface to allow high-pressure liquid to penetrate into the particulate adsorbent carrier 123 and the continuous adsorbent carrier 124. The particulate adsorbent carrier is a random or proportional mixture of single or multiple resin particles or activated carbon particles, possessing both physical and chemical adsorption capabilities. Spherical particle shape is preferred for smooth tumbling.

[0063] like Figure 1 and Figure 2As shown in the illustrated embodiment, the liquid filtered through the particulate adsorption carrier then flows through the continuous adsorption carrier 124 on the surface, undergoing multiple filtrations before entering the filter tank 11 and exiting from the outlet pipe 11b. The continuous adsorption carrier can be an integral continuous structure such as a resin membrane, porous melt-blown resin, porous ceramic sintered structure, or wire-wound braid.

[0064] like Figure 1 and Figure 2 As shown in the illustrated embodiment, when the continuous adsorption carrier on the surface becomes saturated and clogged, the liquid pressure inside the cavity of the worm gear 121 rises, triggering the opening of the pressure relief and drain valve 4 and the backwash valve 3. After pressure relief, the filter element 12 is backwashed, unblocking the granular adsorption carrier 123 and the continuous adsorption carrier 124, and allowing the unblocked wastewater to flow to the heavily polluted wastewater pool 2 for centralized treatment. Here, the unblocking mainly involves the continuous adsorption carrier 124 on the surface; the granular adsorption carrier does not need to be unblocked. In particular, the chemical adsorption within it requires special chemicals for desorption. Therefore, there is no need to worry about the desorption of precious metal ions during backwashing; backwashing will only continue to adsorb precious metal ions.

[0065] like Figure 1 and Figure 2 As shown in the illustrated embodiment, when the particulate adsorption carrier becomes saturated, it can be removed and desorbed into a non-linear recovery system to replace the surface continuous adsorption carrier. The particulate adsorption carrier can be reused 3-5 times after desorption until the adsorption effect significantly decreases before replacement.

[0066] like Figure 1 and Figure 2 As shown in the illustrated embodiment, the filter element of the present invention is suitable for filtering liquids with complex contaminants. It can be filled with various filter element carriers depending on the type of wastewater, and simultaneously possesses both physical and chemical adsorption capabilities. The filter element of the present invention exhibits high adsorption filtration efficiency and low wastewater discharge. Hydraulic pressure drives the novel turbine and hollow vortex shaft to rotate, generating vortexes that agitate resin particles, improving the resin's adsorption rate and preventing clogging. The filter element of the present invention can recover precious metal ions. It can selectively fill resin particles for chemical adsorption of precious metals such as gold and silver, achieving a high adsorption rate. It does not desorb during backwashing, resulting in a high desorption recovery rate in later stages. Furthermore, the filter element of the present invention can be desorbed and reused.

[0067] In summary, the filter element of the present invention has at least one of the following advantages:

[0068] 1) Suitable for filtering liquids with complex pollutants: Various filter carriers can be filled according to the type of sewage. The outer layer can be filled with resin membrane, porous melt-blown resin, porous ceramic sintered structure, wire winding and braiding and other integral continuous structures. The middle layer can be filled with single or multiple resin particles or a random or proportional mixture of activated carbon particles, which can simultaneously perform physical adsorption and chemical adsorption.

[0069] 2) High-efficiency adsorption filtration with low sewage discharge: The filter element has a clever structure. The high-pressure liquid chamber inside the filter element is a turbine and a hollow vortex rod. While serving as the water inlet channel, it also uses the water force of the incoming water to drive the turbine and hollow vortex rod to rotate, generating vortexes that agitate resin and other particles, thereby improving the resin adsorption rate and preventing clogging. At the same time, the vortex agitation can also be used to enhance the backwashing of the adsorption carrier and increase the number of times the filter element can be reused.

[0070] 3) Capable of recovering precious metal ions: It can selectively fill resin particles for chemical adsorption of precious metals such as gold and silver. For example, in this embodiment, polyester-based thiourea resin PDTU is used. The thiourea molecule contains N and S coordinating atoms, which have good selective complexation adsorption of gold and silver ions (the adsorption saturation of gold and silver ions can reach 5 mmol / g). Static resin is difficult to reach adsorption saturation. Eddy current stirring not only promotes adsorption saturation, but also fully recovers gold and silver ions in the later desorption process.

[0071] 4) Filter cartridges can be desorbed and reused: backwashing and reuse are simple, and vortex agitation can also be used to enhance the backwashing of the adsorption carrier, increasing the number of times the filter cartridge can be reused. The filter cartridge frame can be reused until physical damage occurs, and only the new resin membrane or resin particles or other adsorption carriers need to be replaced.

[0072] 5) Compatible with most existing filter cartridges: The design of this new filter cartridge is compatible with most filter cartridges on the market, eliminating the need to replace the filter cartridge.

[0073] Those skilled in the art will understand that the embodiments described above are exemplary and can be improved upon. The structures described in the various embodiments can be freely combined without causing structural or principle conflicts, and these changes should fall within the protection scope of this invention.

[0074] Although the invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of the invention and should not be construed as limiting the invention.

[0075] While some embodiments of the general concept of the invention have been shown and described, those skilled in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of the general concept of the invention, the scope of which is defined by the claims and their equivalents.

[0076] It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude multiple elements. Furthermore, any reference numerals in the claims should not be construed as limiting the scope of the invention.

Claims

1. A filter element, characterized in that, include: The stirring devices (121, 122) include: The worm (121) has a helical hollow cavity and micropores distributed on its surface that communicate with the hollow cavity; and A turbine (122) is connected to the inlet end of the worm (121) and is in fluid communication with the hollow inner cavity of the worm (121); A continuous adsorption carrier (124) is arranged around the stirring device (121, 122); and A particulate adsorbent carrier (123) is filled between the continuous adsorbent carrier (124) and the stirring device (121, 122). When filtering liquid, the liquid flows into the turbine (122) and the worm (121) through the inlet end of the turbine (122), and the turbine (122) and the worm (121) are adapted to rotate under the action of the flowing liquid to vortex agitate the particulate adsorbent carrier (123).

2. The filter element according to claim 1, characterized in that: The continuous adsorption carrier (124) includes a resin membrane, porous meltblown resin, porous ceramic sintered structure, or wire-wound braid.

3. The filter element according to claim 1, characterized in that: The particulate adsorbent carrier (123) includes resin particles, activated carbon particles, or mixtures thereof.

4. The filter element according to claim 1, characterized in that: The particulate adsorbent carrier (123) is in the shape of a smooth sphere.

5. A filter, characterized in that, include: The barrel (11) has an inlet pipe (11a) and an outlet pipe (11b); and The filter element (12) according to any one of claims 1-4 is installed in the barrel (11). The liquid to be filtered flows into the turbine (122) and worm (121) of the filter element (12) through the inlet pipe (11a), and the filtered liquid flows out through the outlet pipe (11b); When filtering liquid, the turbine (122) and worm (121) rotate under the action of the liquid flowing in through the inlet pipe (11a) to vortex agitate the particulate adsorbent carrier (123).

6. The filter according to claim 5, characterized in that: When filtering liquid, the liquid seeps out from the micropores of the worm (121) and flows through the particulate adsorbent carrier (123) and the continuous adsorbent carrier (124) to filter the liquid through the particulate adsorbent carrier (123) and the continuous adsorbent carrier (124).

7. The filter according to claim 5, characterized in that: The barrel (11) also has a backwash pipe (11c) and a drain pipe (11d), the backwash pipe (11c) is connected to the inner cavity of the barrel (11), and the drain pipe (11d) is connected to the outlet of the worm (121); A backwash valve (3) and a drain valve (4) are respectively installed on the backwash pipe (11c) and the drain pipe (11d). The backwash valve (3) and the drain valve (4) are in the closed state when the filter (10) filters the liquid.

8. The filter according to claim 7, characterized in that: When the liquid pressure in the worm (121) rises to a predetermined pressure, the backwash valve (3) and the drain valve (4) are opened, and the liquid that enters the tank (11) through the backwash pipe (11c) flows back into the worm (121) from the outside of the filter element (12), and the liquid flowing back into the worm (121) is discharged through the drain pipe (11d), thereby realizing the backwashing of the filter element (12).

9. The filter according to claim 8, characterized in that: During backwashing of the filter element (12), the turbine (122) and worm (121) rotate under the action of the liquid flowing in through the inlet pipe (11a) to vortex agitate the particulate adsorbent carrier (123).

10. The filter according to claim 7, characterized in that: The inlet end of the turbine (122) is rotatably mounted to the liquid inlet pipe (11a) of the barrel (11) via a first bearing (125) and is in fluid communication with the liquid inlet pipe (11a); The outlet end of the worm (121) is rotatably mounted to the drain pipe (11d) of the barrel (11) via a second bearing (126) and is in fluid communication with the drain pipe (11d).

11. The filter according to claim 7, characterized in that: The filter element (12) also includes a cylindrical outer frame (120), in which the continuous adsorption carrier (124) and the particulate adsorption carrier (123) are contained and supported. The two ends of the outer frame (120) are detachably fixed to the liquid inlet pipe (11a) and the sewage outlet pipe (11d) of the barrel (11).

12. A filtration system, characterized in that, include: The filter (10) according to any one of claims 7-11; Liquid supply tank (5) for supplying liquid to the filter (10); The pump (1) has an inlet (1a) connected to the liquid supply tank (5), a first outlet (1b) and a second outlet (1c) respectively connected to the liquid inlet pipe (11a) and the backwash pipe (11c) of the filter (10).

13. The filtration system according to claim 12, characterized in that: When the liquid is filtered by the filter (10), the liquid pumped from the first outlet (1b) of the pump (1) flows into the turbine (122) and worm (121) of the filter element (12) via the inlet pipe (11a) of the filter (10).

14. The filtration system according to claim 12, characterized in that: The filtration system also includes a wastewater tank (2), and the drain pipe (11d) of the filter (10) is connected to the wastewater tank (2); When the filter element (12) is backwashed, the liquid in the hollow cavity of the worm (121) is discharged into the wastewater pool (2) through the drain pipe (11d).

15. The filtration system according to claim 14, characterized in that: During backwashing of the filter element (12), the liquid pumped from the first outlet (1b) of the pump (1) flows into the turbine (122) and worm (121) of the filter element (12) via the inlet pipe (11a) of the filter (10), and the liquid pumped from the second outlet (1c) of the pump (1) flows into the barrel (11) of the filter (10) via the backwash pipe (11c) of the filter (10).

16. A cleaning system, characterized in that, include: The filtration system according to any one of claims 12-15; and The cleaning tank (6) has an inlet that communicates with the outlet pipe (11b) of the filter (10) of the filtration system. The filtered liquid flows into the cleaning tank (6) through the outlet pipe (11b) of the filter (10) to clean the workpiece in the cleaning tank.

17. The cleaning system according to claim 16, characterized in that: The outlet of the cleaning tank (6) is connected to the liquid supply tank (5) to allow the cleaned liquid to flow back into the liquid supply tank (5) and be filtered again by the filter (10).

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