Filter element, filter, filtration system, and cleaning system

Abstract

To provide a filter element, a filter, a filtration system and a cleaning system that are capable of improving the adsorption rate of a granular adsorption carrier and preventing the blockage of the filter element.SOLUTION: A filter element includes a stirring device 121, 122, a continuous adsorption carrier 124 arranged around the stirring device 121, 122, and a granular adsorption carrier 123 filled into between the continuous adsorption carrier 124 and the stirring device 121, 122. The stirring device 121, 122 stirs the granular adsorption carrier 123 when filtering a liquid with the filter element.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] Cross - reference to Related Applications This application claims the benefit of Chinese Patent Application No. CN202110718146.X, filed on June 28, 2021 with the China National Intellectual Property Administration, the entire disclosure of which is incorporated herein by reference.

[0002] The present invention relates to filter elements, filters including filter elements, filtration systems including filters, and cleaning systems including filtration systems.

Background Art

[0003] In the prior art, industrial cleaning uses a large amount of water to remove residual metal ions and organic contaminants on the surface of components (such as cleaning of electroplated components, electroless plated components, and various electronic components). The main methods for wastewater recovery and treatment are to perform rough filtration online and in real - time using standard industrial filter elements. When contaminants in the cleaning water accumulate at a higher concentration, the cleaning effect decreases, rather worsening the contamination of the components to be cleaned, and the wastewater with highly accumulated contaminants must be periodically replaced and collected, and the wastewater must be intensively treated offline (for example, by a wastewater treatment station) to meet the discharge standards.

[0004] The drawbacks of existing industrial filter elements are their simple structure, single filter material, and low adsorption saturation. Generally, these use wound or melt-blown polypropylene resin or activated carbon, and their effectiveness is barely sufficient for filtering clean household tap water. However, the pollutant components in industrial cleaning water are complex, and their concentrations continuously increase. Filter elements become saturated and clogged very easily, and cannot efficiently absorb pollutants over long periods, resulting in very little online filtration effectiveness in industrial cleaning and consequently insufficient cleanliness of the components. To ensure cleaning effectiveness, water must be frequently replaced and recycled off-line, but this involves high processing costs and large amounts of waste generation, threatening environmental protection. For example, heavy ion contamination leads to low insulation resistance and short circuits in electronic components, but high-precision industries such as semiconductors mostly rely on running water for cleaning, resulting in large amounts of wastewater discharge and a high burden on environmental protection. High-contamination processes such as electroplating not only present cleanliness problems but also lead to reduced coating adhesion, increased porosity, and even delamination. The failure mechanism involves high-potential metal ions such as silver and gold ions being easily substituted and deposited on the surface of the high-potential metal component to be plated before the metal electroplating is deposited. The substituted layer is extremely non-uniform, unstable, brittle, and porous.

[0005] Existing filter elements typically have the following drawbacks:

[0006] 1) It is not suitable for filtering water containing complex contaminants. That is, the filter element carrier is single and relies primarily on physical adsorption. The main targets for filtration are high molecular weight polymers or colloids and other fine particles that have lower adsorption to metal ions.

[0007] 2) Adsorption filtration is insufficient, resulting in high wastewater discharge. Specifically, the filter element has a simple structure, and the high-pressure water chamber of the filter element is a simple hollow cylinder. To prevent continuous adsorption of the carrier near the surface of the filter element, the adsorbent carrier near the high-pressure water chamber is selectively blocked, and at the same time, the pressure inside the high-pressure water chamber increases. After pressure release, the filter element needs to be backwashed, the adsorbent carrier dredged, and the dredged wastewater needs to be discharged into a heavily contaminated wastewater pool for centralized treatment. This requires frequent operation of the pressure release drain valve and backwash valve.

[0008] 3) Precious metal ions cannot be recovered. In other words, it is not easy to recover the adsorbed metal ions, and therefore this method cannot be used for recovering precious metal ions.

[0009] 4) The filter elements cannot be detached and reused. In other words, the filter elements are almost always disposable and treated as solid waste. This results in a large amount of waste. [Overview of the project] [Problems that the invention aims to solve]

[0010] This invention was made to overcome or mitigate at least one of the above-mentioned disadvantages. [Means for solving the problem]

[0011] According to one aspect of the present invention, a filter element is provided comprising a stirring device, a continuous adsorption carrier arranged around the stirring device, and a granular adsorption carrier filled between the continuous adsorption carrier and the stirring device. The stirring device is configured to agitate the granular adsorption carrier when filtering a liquid through the filter element.

[0012] According to an exemplary embodiment of the present invention, the stirring device comprises a stirring rod and a drive device connected to the stirring rod, the drive device being configured to drive and rotate the stirring rod so as to stir the granular adsorbent carrier with the stirring rod.

[0013] According to another exemplary embodiment of the present invention, the drive device is an electric drive device or a hydraulic drive device.

[0014] According to another exemplary embodiment of the present invention, the agitator comprises a worm having a helical hollow internal cavity and micropores dispersed on the surface of the worm and communicating with the hollow internal cavity, and a turbine connected to the inlet of the worm and in fluid communication with the hollow internal cavity of the worm. A continuous adsorption carrier is arranged around the worm and the turbine, and the turbine and worm are driven to rotate by the impact of the liquid flowing into the turbine so as to agitate the granular adsorption carrier by vortex flow.

[0015] According to another exemplary embodiment of the present invention, the continuous adsorption carrier includes a resin film, a porous meltblown resin, a porous ceramic sintered structure, or a wound braid.

[0016] According to another exemplary embodiment of the present invention, the granular adsorption carrier comprises resin particles, activated carbon particles, or a mixture thereof.

[0017] According to another exemplary embodiment of the present invention, the granular adsorption carrier is spherical in shape with a smooth surface.

[0018] According to another aspect of the present invention, a filter is provided comprising a barrel having a liquid inlet pipe and a liquid outlet pipe, and the above-mentioned filter element installed in the barrel, wherein unfiltered liquid flows into the filter element through the liquid inlet pipe, and filtered liquid flows out through the liquid outlet pipe.

[0019] According to another aspect of the present invention, a filter is provided comprising a barrel having a liquid inlet pipe and a liquid outlet pipe, and the filter element installed in the barrel. Unfiltered liquid flows through the liquid inlet pipe into the turbine and worm of the filter element, and filtered liquid flows out through the liquid outlet pipe, and the turbine and worm are driven to rotate by the impact of the liquid flowing into the turbine through the liquid inlet pipe so as to agitate the granular adsorption carrier by vortex flow.

[0020] According to an exemplary embodiment of the present invention, when filtering a liquid, the liquid seeps out from the micropores of the worm and flows through the granular adsorbent carrier and the continuous adsorbent carrier, thereby filtering the liquid through the granular adsorbent carrier and the continuous adsorbent carrier.

[0021] According to another exemplary embodiment of the present invention, the barrel also has a backwash pipe and a drain pipe, the backwash pipe communicating with an internal cavity of the barrel and the drain pipe communicating with the outlet of a worm, and a backwash valve and a drain valve are installed on the backwash pipe and the drain pipe, respectively, and the backwash valve and the drain valve are closed when the filter filters the liquid.

[0022] According to another exemplary embodiment of the present invention, when the hydraulic pressure in the worm rises to a predetermined pressure, the backwash valve and drain valve are opened to backwash the filter element, and the liquid entering the barrel through the backwash pipe flows backward into the worm from the outside of the filter element, and the liquid flowing backward into the worm is discharged through the drain pipe.

[0023] According to another exemplary embodiment of the present invention, when backwashing the filter element, the turbine and worm are driven to rotate by the impact of the liquid flowing into the turbine through the liquid inlet pipe so as to agitate the granular adsorption carrier by vortex flow.

[0024] According to another exemplary embodiment of the present invention, the inlet of the turbine is rotatably installed in the liquid inlet pipe of the barrel via a first bearing, in fluid communication with the liquid inlet pipe, and the outlet of the worm is rotatably installed in the drain pipe of the barrel via a second bearing, in fluid communication with the drain pipe.

[0025] According to another exemplary embodiment of the present invention, the filter element also includes a cylindrical outer frame, and the continuous adsorption carrier and the granular adsorption carrier are accommodated and supported in the outer frame, and both ends of the outer frame are detachably fixed to the liquid inlet pipe and the drain pipe of the barrel, respectively.

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

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

[0028] According to another exemplary embodiment of the present invention, the filtration system further includes a waste water tank to which the drain pipe of the filter is connected, and when backwashing the filter element, the liquid in the hollow inner cavity of the worm is discharged to the waste water tank through the drain pipe.

[0029] According to another exemplary embodiment of the present invention, when backwashing the filter element, the liquid pumped from the first outlet of the pump flows into the turbine and the worm of the filter element through the liquid inlet pipe of the filter, and the liquid pumped from the second outlet of the pump flows into the barrel of the filter through the backwash pipe of the filter.

[0030] According to another aspect of the present invention, a cleaning system is provided comprising the above-described filtration system and a cleaning tank having an inlet that communicates with the liquid outlet pipe of the filter of the filtration system. The filtered liquid flows into the cleaning tank through the outlet pipe of the filter to clean the workpiece in the cleaning tank.

[0031] According to an exemplary embodiment of the present invention, the outlet of the washing tank communicates with the liquid supply tank so that the washed liquid can be returned to the liquid supply tank and filtered again by the filter.

[0032] In the exemplary embodiment described above according to the present invention, the granular adsorption carrier can be stirred by a stirring device. Therefore, the present invention can improve the adsorption rate of the granular adsorption carrier and prevent blockage of the filter element.

[0033] The above and other features of the present invention will become more apparent by describing in detail its exemplary embodiments with reference to the accompanying drawings. [Brief explanation of the drawing]

[0034] [Figure 1] This is a schematic diagram of a filtration system according to an exemplary embodiment of the present invention. [Figure 2] This is a schematic diagram of a cleaning system according to an exemplary embodiment of the present invention. [Modes for carrying out the invention]

[0035] Exemplary embodiments of the present disclosure will be described in detail below with respect to the accompanying drawings. In the drawings, similar reference numerals refer to similar elements. However, the present disclosure may be implemented in a number of different forms and should not be construed as being limited to the embodiments described herein. Rather, these embodiments are provided to make the present disclosure sufficient and complete and will fully convey the concepts of the present disclosure to those skilled in the art.

[0036] In the following detailed description, for illustrative purposes, numerous specific details are included to provide a full understanding of the embodiments of the disclosure. However, it will be apparent that one or more embodiments may be carried out without these specific details. In other examples, well-known structures and apparatus are shown schematically for the sake of simplicity in the drawings.

[0037] According to the general concept of the present invention, a filter element is provided comprising a stirring device, a continuous adsorption carrier arranged around the stirring device, and a granular adsorption carrier filled between the continuous adsorption carrier and the stirring device. The stirring device is configured to agitate the granular adsorption carrier when filtering a liquid through the filter element.

[0038] Figure 1 shows a schematic diagram of a filtration system according to an exemplary embodiment of the present invention.

[0039] As shown in Figure 1, in the exemplary embodiment, the filtration system mainly comprises a pump 1, a filter 10, and a liquid supply tank 5. The filter 10 mainly comprises a barrel 11 and a filter element 12 installed in the barrel 11. To facilitate replacement, the filter element 12 is detachably installed in the barrel 11.

[0040] As shown in Figure 1, in the exemplary embodiment, the filter element 12 mainly comprises agitators 121 and 122, a continuous adsorption carrier 124, and a granular adsorption carrier 123. The continuous adsorption carrier 124 is arranged around the agitators 121 and 122. The granular adsorption carrier 123 is filled between the continuous adsorption carrier 124 and the agitators 121 and 122. When filtering a liquid, the agitators 121 and 122 agitate the granular adsorption carrier 123. This improves the adsorption rate of the granular adsorption carrier 123 and prevents clogging of the filter element 12.

[0041] As shown in Figure 1, in exemplary embodiments of the present invention, the agitators 121 and 122 may include an agitator rod and a drive device. The drive device is connected to the agitator rod and is used to drive and rotate the agitator rod to agitate the granular adsorption carrier 123 via the agitator rod. The drive device may be an electric drive (e.g., a motor) or a hydraulic drive.

[0042] As shown in Figure 1, in the exemplary embodiment, the stirring rod of the agitators 121 and 122 is a worm 121, and the drive device for the agitators 121 and 122 is a turbine 122. The worm 121 has a helical hollow internal cavity and micropores dispersed on its surface that communicate with the hollow internal cavity. The turbine 122 is connected to the inlet of the worm 121 and is in fluid communication with the hollow internal cavity of the worm 121. A continuous adsorption carrier 124 is arranged around the worm 121 and the turbine 122. In the exemplary embodiment, the continuous adsorption carrier 124 is cylindrical. A granular adsorption carrier 123 is filled between the continuous adsorption carrier 124 and the worm 121.

[0043] As shown in Figure 1, in the exemplary embodiment, the turbine 122 and worm 121 are adapted to rotate in response to the incoming liquid, stirring the granular adsorption carrier 123 by vortex flow. In the exemplary embodiment, the liquid delivered by the pump 1 has a constant pressure when it enters the turbine 122, so that the turbine 122 is driven to rotate, and the worm 121 is driven to rotate together with the turbine 122. This allows the granular adsorption carrier 123 to be continuously stirred while filtering the liquid or backwashing the filter element. This improves the filtration and backwashing effects of the filter element and prevents clogging of the filter element.

[0044] As shown in Figure 1, in the exemplary embodiment, the barrel 11 of the filter 10 has a liquid inlet pipe 11a and a liquid outlet pipe 11b. Unfiltered liquid flows through the liquid inlet pipe 11a to the turbine 122 and worm 121 of the filter element 12, and filtered liquid flows out through the liquid outlet pipe 11b. When filtering the liquid, the turbine 122 and worm 121 rotate in response to the liquid flowing through the liquid inlet pipe 11a, stirring the granular adsorbent carrier 123.

[0045] As shown in Figure 1, in the exemplary embodiment, when filtering a liquid, the liquid seeps out from the micropores of the worm 121 and flows through the granular adsorbent carrier 123 and the continuous adsorbent carrier 124, thereby filtering the liquid through the granular adsorbent carrier 123 and the continuous adsorbent carrier 124. The filtered liquid seeps from the continuous adsorbent carrier 124 into the internal cavity of the barrel 11 and finally flows out from the liquid outlet pipe 11b of the barrel 11.

[0046] As shown in Figure 1, in the exemplary embodiment, the barrel 11 also has a backwash pipe 11c and a drain pipe 11d. The backwash pipe 11c communicates with the internal cavity of the barrel 11. The drain pipe 11d is connected to the outlet of the worm 121. A backwash valve 3 is installed in the backwash pipe 11c and a drain valve 4 is installed in the drain pipe 11d. The backwash valve 3 and the drain valve 4 are closed when the filter 10 filters the liquid.

[0047] As shown in Figure 1, in the exemplary embodiment, when the granular adsorption carriers 123 and continuous adsorption carriers 124 in the filter element 12 become saturated or blocked, the liquid pressure in the worm 121 increases. When the liquid pressure in the worm 121 rises to a predetermined pressure, the backwash valve 3 and the drain valve 4 are activated to open. At this time, liquid enters the barrel 11 through the backwash pipe 11c. The liquid entering the barrel 11 through the backwash pipe 11c flows into the worm 121 in the reverse direction from the outside of the filter element 12, and the liquid flowing into the worm 121 in the reverse direction is discharged through the drain pipe 11d. This enables backwashing of the filter element 12.

[0048] As shown in Figure 1, in the exemplary embodiment, when the filter element 12 is backwashed, the turbine 122 and worm 121 rotate under the action of the liquid flowing through the liquid inlet pipe 11a, agitating the granular adsorption carrier 123. This improves the backwashing effect of the granular adsorption carrier 123 and the continuous adsorption carrier 124, and extends the service life of the filter element 12.

[0049] As shown in Figure 1, in the exemplary embodiment, the inlet of the turbine 122 is rotatably mounted on 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 of the worm 121 is rotatably mounted on the drain pipe 11d of the barrel 11 via a second bearing 126, and is in fluid communication with the drain pipe 11d.

[0050] As shown in Figure 1, in the exemplary embodiment, the filter element 12 also includes a cylindrical outer frame 120. The continuous adsorption carrier 124 and the granular adsorption carrier 123 are housed and supported within the outer frame 120. In the exemplary embodiment of the present invention, both ends of the outer frame 120 are detachably fixed to the liquid inlet pipe 11a and the drain pipe 11d of the barrel 11, respectively.

[0051] As shown in Figure 1, in the exemplary embodiment, the granular adsorption carrier 123 may be spherical in shape with a smooth surface in order to improve the rolling performance of the granular adsorption carrier 123 during stirring. However, the present invention is not limited thereto, and the granular adsorption carrier 123 may have other suitable shapes.

[0052] As shown in Figure 1, in the exemplary embodiment, the pump 1 pumps the liquid from the liquid supply tank 5 to the filter 10. The pump 1 has an inlet 1a connected to the liquid supply tank 5, a first outlet 1b connected to the liquid inlet pipe 11a of the filter 10, and a second outlet 1c connected to the backwash pipe 11c of the filter 10.

[0053] As shown in Figure 1, in the exemplary embodiment, when the liquid is filtered by the filter 10, the liquid pumped from the first outlet 1b of the pump 1 flows through the liquid inlet pipe 11a of the filter 10 to the turbine 122 and worm 121 of the filter element 12.

[0054] As shown in Figure 1, in the exemplary embodiment, the filtration system also includes a wastewater tank 2. 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 internal cavity of the worm 121 is discharged into the wastewater tank 2 through the drain pipe 11d.

[0055] As shown in Figure 1, in the exemplary embodiment, when the filter element 12 is backwashed, the liquid pumped from the first outlet 1b of the pump 1 flows through the inlet pipe 11a of the filter 10 into the turbine 122 and worm 121 of the filter element 12, and the liquid pumped from the second outlet 1c of the pump 1 flows through the backwash pipe 11c of the filter 10 into the barrel 11 of the filter 10.

[0056] Figure 2 shows a schematic diagram of a cleaning system according to an exemplary embodiment of the present invention.

[0057] As shown in Figure 2, in an exemplary embodiment, the cleaning system mainly comprises the filtration system of Figure 1 and a cleaning tank 6. The cleaning tank 6 has an inlet that communicates with the liquid 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. In an exemplary embodiment of the present invention, the workpiece to be cleaned may be an electroplated workpiece.

[0058] As shown in Figure 2, in this exemplary embodiment, the outlet of the washing tank 6 is connected to the liquid supply tank 5 so that the washed liquid can return to the liquid supply tank 5 and be filtered again by the filter 10. This forms a washing system.

[0059] As shown in Figures 1 and 2, in exemplary embodiments of the present invention, a novel type of filter element is developed, starting from the purification of electroplating water cleaning water. Its outer layer may be filled with a resin film, porous meltblown resin, porous ceramic sintered structure, winding braid, and other integral continuous structure, and the intermediate layer may be filled with an irregular mixture of one or more types of resin particles or activated carbon particles. This simultaneously possesses physical and chemical adsorption properties. The internal structure is no longer a conventional hollow cylindrical structure, but rather a turbine and a hollow vortex rod. This also serves as a water inlet, using the hydraulic power of water to drive and rotate the turbine and hollow vortex rod, generating a vortex, stirring the resin and other particles, improving the resin adsorption rate, and preventing blockage. Simultaneously, vortex agitation can be used to enhance backwashing of the adsorption carrier and increase the number of times the filter element can be reused. The filter element frame can be reused until it is physically damaged, and only the new adsorption carrier, such as a resin film or resin particles, needs to be replaced. The selected adsorption carrier can selectively adsorb according to the contaminants of the wastewater. For example, polypropylene resin can be used to adsorb polymers such as engine oil or inorganic precipitates, and activated carbon can be used to adsorb heavy metal ions and pigments. If gold, silver, and other precious metal ions saturate the thiourea resin, the filter element can be removed for desorption and recovery of the precious metals. Vortex agitation allows for more thorough desorption. The appearance design of the new filter element can be adapted to the filter barrels of most filters on the market without replacing the filter barrel.

[0060] As shown in Figures 1 and 2, in the exemplary embodiment, a new filter element 12 is installed in the filter barrel 11, and bearings 125 and 126 at both ends of the filter element 12 are fixed to the rings of the liquid inlet pipe 11a and the pressure relief drain pipe 11d of the filter barrel 11, respectively. Here, the bearings 125 and 126 are made from wear-resistant materials such as ceramic or die steel, and are not disposable products. When replacing the filter element 12, it can be replaced with a new filter element for repeated use.

[0061] As shown in Figures 1 and 2, in the exemplary embodiment, the liquid is pumped under high pressure by a water pump 1 and enters the turbine 122 through a liquid inlet pipe 11a. The turbine 122 agitates the granular adsorption carrier 123 by driving and rotating a worm 121. Here, the turbine 122 and worm 121 are made from plastic or metal and are 3D printed or machined. The porous carriers 121 and 124 absorb the liquid by continuous adsorption. Here, the granular adsorption carrier is an irregular or regular mixture of one or more types of resin particles or activated carbon particles that simultaneously possess physical and chemical adsorption properties. A spherical shape is preferred for smooth rolling.

[0062] As shown in Figures 1 and 2, in the exemplary embodiment, the liquid filtered by the granular adsorption carrier reaches the continuous adsorption carrier 124, flows into the filter barrel 11 after multiple filtration, and flows out from the liquid outlet pipe 11b. The continuous adsorption carrier may be an integral continuous structure such as a resin film, a porous meltblown resin, a porous ceramic sintered structure, or a wound braid.

[0063] As shown in Figures 1 and 2, in the exemplary embodiment, when the continuous adsorption carrier on the surface becomes saturated and blocked, the hydraulic pressure in the cavity of the worm 121 increases, thereby activating and opening the pressure-relieving drain valve 4 and the backwash valve 3. After the pressure is released, the filter element 12 is backwashed, the granular adsorption carrier 123 and the continuous adsorption carrier 124 are dredging, and the dredged wastewater can flow to the heavily contaminated wastewater tank 2 for centralized treatment. The continuous adsorption carrier 124 is mostly dredged here. The granular adsorption carrier does not need to be dredged, and in particular, chemical adsorption must be desorbed by the spherical liquid agent. Therefore, there is no need to worry about the desorption of noble metal ions by backwashing, and backwashing is continued only to adsorb noble metal ions and heavy metal ions.

[0064] As shown in Figures 1 and 2, in the exemplary embodiment, when the granular adsorption carrier becomes saturated, it can be removed and desorbed by an off-line recovery system, and the continuous adsorption carrier can be replaced. After desorption, the granular adsorption carrier may be reused 3 to 5 times until its adsorption effect significantly decreases.

[0065] As shown in Figures 1 and 2, in exemplary embodiments, the filter element of the present invention is suitable for filtering liquids containing complex contaminants. It can be filled with various filter element carriers depending on the type of waste liquid and possesses both physical and chemical adsorption properties. The filter element of the present invention has high adsorption and filtration efficiency as well as low discharge volume. By driving and rotating a novel turbine and hollow vortex rod with water pressure, a vortex is generated to agitate the resin and other particles, thereby improving the adsorption rate of the resin and preventing clogging. The filter element of the present invention can recover precious metal ions and can be selectively filled with resin particles for the chemical adsorption of precious metals such as gold and silver, has a high adsorption rate, does not desorb during backwashing, and maintains a high desorption recovery rate even in later stages. In addition, the filter element of the present invention can be desorbed and reused.

[0066] In conclusion, the filter element of the present invention has at least one of the following advantages.

[0067] 1) Suitable for filtering liquids containing complex contaminants. That is, various filter element carriers can be packed according to the type of waste liquid. The outer layer may be packed with an integral continuous structure such as a resin film, porous meltblown resin, porous ceramic sintered structure, and wound braided structure. The intermediate layer may be packed with one or more types of resin particles or activated carbon particles that simultaneously possess physical and chemical adsorption properties.

[0068] 2) It has high adsorption filtration efficiency and low discharge volume. That is, the filter element has a sophisticated structure. The high-pressure liquid cavity in the filter element is a turbine and a hollow vortex rod. This also serves as a water inlet, and the hydraulic power of the water is used to drive and rotate the turbine and hollow vortex rod, generating a vortex that agitates the resin and other particles, thereby improving the adsorption rate and clogging prevention of the resin. At the same time, vortex agitation can also be used to enhance backwashing of the adsorption carrier and increase the number of times the filter element can be reused.

[0069] 3) Precious metal ions can be recovered. That is, resin particles can be selectively packed for the chemical adsorption of precious metals such as gold and silver. For example, in this embodiment, a polyester-based thiourea resin is used. The molecular structure of thiourea contains N and S coordination atoms that have good selective complex adsorption properties for gold and silver ions (adsorption saturation of gold and silver ions can reach 5 mmol / g), while stationary resin does not easily reach adsorption saturation. Vortex stirring not only promotes adsorption saturation, but also allows for the complete recovery of gold and silver ions in the subsequent desorption process.

[0070] 4) The filter elements can be detached and reused. That is, backwashing and reuse are easy, and vortex agitation can be used to enhance backwashing of the adsorption carrier and increase the number of times the filter elements can be reused. The filter element frame can be reused until it is physically damaged, and only the new adsorption carrier, such as a resin film or resin particles, needs to be replaced.

[0071] 5) It can fit the filter barrel of most existing filters. That is, the appearance design of the new filter element can fit the filter barrel of most filters on the market without replacing the filter barrel.

[0072] Those skilled in the art will understand that the embodiments described above are illustrative and not limiting. For example, numerous modifications can be made to the embodiments described above by those skilled in the art, and the various features described in the various embodiments can be freely combined with each other, as long as they do not contradict the structure or principle.

[0073] While several exemplary embodiments have been described, it will be understood by those skilled in the art that various changes or modifications may be made to these embodiments without departing from the principles and spirit of the present disclosure. The scope of the present disclosure is defined in the claims and its equivalents.

[0074] In this specification, the elements following the singular form of the word "a" or "an" should be understood as not excluding multiple such elements or steps unless explicitly stated otherwise. Furthermore, the reference to "one embodiment" of the present invention is not intended to be construed as excluding the existence of further embodiments that similarly incorporate the described features. In addition, unless explicitly stated otherwise, embodiments that "compile" or "have" an element or multiple elements having a particular property may include further such elements that do not possess that property.

Claims

1. A stirring device (121, 122); a continuous adsorption carrier (124) disposed around the stirring device (121, 122); a granular adsorption carrier (123) filled between the continuous adsorption carrier (124) and the agitation device (121, 122); A filter element comprising: The agitation devices (121, 122) are configured to agitate the granular adsorption carrier (123) when filtering liquid through the filter element. Filter element.

2. The stirring device (121, 122) A stirring rod; a drive unit connected to the stirring rod; Equipped with The driving device is configured to drive and rotate the stirring rod so as to stir the granular adsorption carrier (123) by the stirring rod. The filter element of claim 1 .

3. The drive unit is an electric drive unit or a hydraulic drive unit. The filter element of claim 2 .

4. The stirring device (121, 122) a worm (121) having a spiral-shaped hollow interior cavity and micro-holes distributed on the surface of the worm (121) and communicating with the hollow interior cavity; a turbine (122) connected to the inlet of the worm (121) and in fluid communication with the hollow interior cavity of the worm (121); Equipped with The continuous adsorbent carrier (124) is disposed around the worm (121) and the turbine (122); The turbine (122) and the worm (121) are driven to rotate by the impact of the liquid flowing into the turbine (122) so as to agitate the granular adsorption carrier (123) by vortex flow. The filter element of claim 1 .

5. The continuous adsorbent carrier (124) comprises a resin film, a porous meltblown resin, a porous ceramic sintered structure, or a wound wire braid. The filter element of claim 1 .

6. The granular adsorption carrier (123) includes resin particles, activated carbon particles, or a mixture thereof. The filter element of claim 1 .

7. The granular adsorption carrier (123) is in the shape of a sphere having a smooth surface. The filter element of claim 1 .

8. a barrel (11) having a liquid inlet pipe (11a) and a liquid outlet pipe (11b); A filter element (12) according to any one of claims 1 to 7, which is installed in the barrel (11). Equipped with The unfiltered liquid flows into the filter element (12) through the liquid inlet pipe (11a) and the filtered liquid flows out through the liquid outlet pipe (11b). filter.

9. a barrel (11) having a liquid inlet pipe (11a) and a liquid outlet pipe (11b); A filter element (12) according to claim 4, which is installed in the barrel (11); Equipped with The unfiltered liquid flows through the liquid inlet pipe (11a) into the turbine (122) and the worm (121) of the filter element (12), and the filtered liquid flows out through the liquid outlet pipe (11b); The turbine (122) and the worm (121) are driven to rotate by the impact of the liquid flowing into the turbine (122) through the liquid inlet pipe (11a) so as to agitate the granular adsorption carrier (123) by vortex flow. filter.

10. When the liquid is filtered, the liquid seeps out from the micropores of the worm (121) and flows through the granular adsorbent carrier (123) and the continuous adsorbent carrier (124), thereby filtering the liquid through the granular adsorbent carrier (123) and the continuous adsorbent carrier (124).

10. The filter of claim 9.

11. The barrel (11) also has a backwash pipe (11c) and a drain pipe (11d), the backwash pipe (11c) communicating with the internal cavity of the barrel (11), and the drain pipe (11d) communicating with the outlet of the worm (121); A backwash valve (3) and a drain valve (4) are respectively installed in the backwash pipe (11c) and the drain pipe (11d), and the backwash valve (3) and the drain valve (4) are closed when the filter (10) filters the liquid.

10. The filter of claim 9.

12. When the liquid pressure in the worm (121) rises to a predetermined pressure, the backwash valve (3) and the drain valve (4) are opened to backwash the filter element (12), and the liquid entering the barrel (11) through the backwash pipe (11c) flows in the reverse direction from the outside of the filter element (12) into the worm (121), and the liquid flowing in the reverse direction into the worm (121) is discharged through the drain pipe (11d).

12. The filter of claim 11.

13. When backwashing the filter element (12), the turbine (122) and the worm (121) are driven to rotate by the impact of the liquid flowing into the turbine (122) through the liquid inlet pipe (11a) so as to agitate the granular adsorption carrier (123) by vortex flow.

13. The filter of claim 12.

14. an inlet of the turbine (122) rotatably mounted on the liquid inlet pipe (11 a) of the barrel (11) via a first bearing (125) and in fluid communication with the liquid inlet pipe (11 a); The outlet of the worm (121) is rotatably mounted on the drain pipe (11d) of the barrel (11) via a second bearing (126) and is in fluid communication with the drain pipe (11d).

12. The filter of claim 11.

15. The filter element (12) also includes a cylindrical outer frame (120), in which the continuous adsorption carrier (124) and the granular adsorption carrier (123) are housed and supported, and both ends of the outer frame (120) are detachably fixed to the liquid inlet pipe (11a) and the drain pipe (11d) of the barrel (11), respectively.

12. The filter of claim 11.

16. The filter (10) according to claim 11; a liquid supply tank (5) for supplying liquid to the filter (10); a pump (1) having an inlet (1a) connected to the liquid supply tank (5), a first outlet (1b) connected to the liquid inlet pipe (11a) of the filter (10), and a second outlet (1c) connected to the backwash pipe (11c) of the filter (10); A filtration system comprising:

17. 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 the worm (121) of the filter element (12) through the liquid inlet pipe (11a) of the filter (10).

17. The filtration system of claim 16.

18. A wastewater tank (2) to which the drain pipe (11d) of the filter (10) is connected. Furthermore, When backwashing the filter element (12), the liquid in the hollow internal cavity of the worm (121) is drained through the drain pipe (11d) into the wastewater tank (2).

17. The filtration system of claim 16.

19. When backwashing the filter element (12), the liquid pumped from the first outlet (1b) of the pump (1) flows into the turbine (122) and the worm (121) of the filter element (12) through the liquid 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) through the backwash pipe (11c) of the filter (10).

20. The filtration system of claim 18.

20. The filtration system according to any one of claims 16 to 19; a washing tank (6) having an inlet communicating with the liquid outlet pipe (11b) of the filter (10) of the filtration system; Equipped with The filtered liquid flows into the washing tank (6) through the outlet pipe (11b) of the filter (10) to wash the workpieces in the washing tank. Cleaning system.

21. The outlet of the washing tank (6) communicates with the liquid supply tank (5) so that the washed liquid can return to the liquid supply tank (5) and be filtered again by the filter (10).

21. The cleaning system of claim 20.

Images