Double filtering device and use method

Abstract

The invention discloses a double-filtering device and a use method, and belongs to the related field of chemical raw material treatment technology.The double-filtering device comprises a magnetic filter and a core type filter, the magnetic filter is fixedly installed on one side of the core type filter, and the magnetic filter and the core type filter are in through connection through a communicating pipe; a rotary clamping seat is movably mounted in the magnetic filter, a plurality of groups of electromagnetic filtering pieces are annularly distributed on the inner side of the rotary clamping seat, the electromagnetic filtering pieces are integrally of a cylindrical structure, and a plurality of groups of electromagnetic rings are distributed in the electromagnetic filtering pieces; lifting pressing plates are movably mounted above and below the electromagnetic filtering pieces in the magnetic filter; two groups of lifting joints matched with the electromagnetic filtering pieces for use are mounted at one ends of the lifting pressing plates; when the filter is used, the rotary magnetic filter element can be cleaned in cooperation with an electromagnetic filtering structure, so that the filtering service time of the filter is prolonged, and the using effect of the filter is improved.

Description

Technical Field

[0001] The invention belongs to the field of chemical raw material processing technology, and more specifically relates to a double filtering device and a use method thereof. Background Art

[0002] The double filtration device is a device used in the transportation process of chemical raw materials such as ethyl acetate to filter ethyl acetate liquid. Ethyl acetate liquid is generally transported by tank trucks during transportation, which makes the ethyl acetate liquid easily contaminated by secondary pollution during transportation, so that the ethyl acetate liquid is doped with metal impurities or particulate matter. Therefore, the ethyl acetate liquid needs to be double filtered.

[0003] The application document with the publication number CN117658294A records a magnetic filtering device. The magnetic filtering device includes a filter body and an intermediate sleeve, and a water inlet is arranged on the filter body. The intermediate sleeve is arranged in the filter body, and a water passage is formed between the intermediate sleeve and the filter body, and a water outlet is arranged on the intermediate sleeve. A water passage window is provided on the intermediate sleeve, and the water passage window and the water inlet are staggered. A magnet for absorbing magnetic impurities in the water flow is arranged in the intermediate sleeve. By arranging the intermediate sleeve and staggering the water passage window and the water inlet, the water flow needs to flow in the water passage for a distance before turning and passing through the water passage window. The water flow is buffered, thereby reducing the impact force of the water flow on the magnet, so that the magnet can maximize its ability to absorb magnetic impurities, thereby improving the filtering performance of the magnetic filtering device.

[0004] The conventional filtering device has certain deficiencies when filtering ethyl acetate liquid, because the ethyl acetate liquid needs to be filtered for metal impurities and particulate matter, so a magnetic filter and a filter element filtering structure need to be provided. The magnetic filtering device adopts an integrated structural design. When the magnetic filtering device filters a certain amount of ethyl acetate liquid, a certain amount of metal impurities will be generated in the magnetic filtering device, and the conventional magnetic filtering device cannot be automatically cleaned. When the magnetic filtering device is used for a period of time, it needs to be replaced, which reduces its use effect. Secondly, the filtering effect of the conventional magnetic filtering device is poor, so that the ethyl acetate liquid cannot fully contact with the magnetic filtering device during the transportation process, which affects the filtering effect of its metal impurities. Summary of the invention

[0005] The purpose of the present invention is to provide a double filtering device and a method of use, which can solve the existing problems.

[0006] The problem to be solved by the present invention is:

[0007] 1. Since it is necessary to filter metal impurities and particulate matters in ethyl acetate liquid, a dual - filtration structure of magnetic filtration and filter element filtration needs to be set up. The above - mentioned magnetic filtration device adopts an integrated structure design. After the magnetic filtration device filters a certain amount of ethyl acetate liquid, a certain amount of metal impurities will be generated inside the magnetic filtration device. However, the traditional magnetic filtration device cannot be automatically cleaned. When the magnetic filtration device is used for a period of time, it needs to be replaced, which reduces its use effect. Secondly, the filtration effect of the traditional magnetic filtration device is poor, making the ethyl acetate liquid unable to fully contact with the magnetic filtration device during transportation, affecting the filtration effect of its metal impurities.

[0008] The object of the present invention can be achieved by the following technical solutions:

[0009] A dual - filtration device, including a magnetic filter and a core - type filter. The magnetic filter is fixedly installed on one side of the core - type filter, and the magnetic filter and the core - type filter are connected through a communication pipe. A rotating chuck is movably installed inside the magnetic filter, and several groups of electromagnetic filtration elements are annularly distributed inside the rotating chuck. The overall structure of the electromagnetic filtration element is cylindrical, and several groups of electromagnetic rings are distributed inside the electromagnetic filtration element. Lifting pressure plates are movably installed above and below the electromagnetic filtration element inside the magnetic filter. One end of the lifting pressure plate is equipped with two lifting joints for cooperating with the electromagnetic filtration element. A moving ring is fixedly installed on the outer surface of the side of the magnetic filter, and a connector for cooperating with the rotating chuck is movably installed inside the moving ring.

[0010] As a further technical solution of the present invention, annular grooves for cooperating with the lifting joints are provided at both ends of the electromagnetic filtration element. The rotating chuck and the magnetic filter are movably connected through a rotating rod. With the setting of the rotating rod, the rotating chuck can make the inside of the magnetic filter have a rotating replacement structure. Several groups of electromagnetic filtration elements are installed on the rotating chuck. When the electromagnetic filtration elements are fully adsorbed, the replacement operation of the electromagnetic filtration elements can be completed through the rotating chuck.

[0011] As a further technical solution of the present invention, a circular notch for cooperating with the rotating rod is provided in the middle of the lifting pressure plate. The lifting pressure plate and the magnetic filter are driven by a lifting push rod. After the rotating chuck completes the replacement operation of the electromagnetic filtration element, to ensure the docking sealing of the electromagnetic filtration element and prevent the ethyl acetate liquid from overflowing from the end of the electromagnetic filtration element, by setting the lifting pressure plate and driving the lifting pressure plate by the lifting push rod, the lifting pressure plate drives the two lifting joints to move downward at the same time, so that the lifting joints are docked with the annular grooves of the electromagnetic filtration element, making the electromagnetic filtration element maintain a sealed connection during use and cleaning operations.

[0012] As a further technical solution of the present invention, two inner sleeves are fixedly installed at the other end of the lifting pressure plate. A liquid inlet pipe for cooperating with the electromagnetic filtering element is provided at the lower end of the magnetic filter. During use, ethyl acetate liquid is introduced into the magnetic filter through the liquid inlet pipe. The electromagnetic filtering element connected by the connecting pipe is energized by using a connector, so that the electromagnetic ring in the electromagnetic filtering element generates magnetism. When the ethyl acetate liquid passes through the electromagnetic ring, metal impurities in the ethyl acetate liquid are adsorbed and filtered. The preliminarily filtered ethyl acetate liquid is discharged into the inside of the core filter through the connecting pipe, and the core filter uses the filter element structure inside to perform secondary filtration treatment on it.

[0013] As a further technical solution of the present invention, the electromagnetic ring and the electromagnetic filtering element are connected and fixed through a docking chuck. The diameters of several groups of electromagnetic rings are in a decreasing state. An annular groove is provided between two groups of electromagnetic rings. To improve the contact effect between the ethyl acetate liquid and the electromagnetic ring, by setting several groups of electromagnetic rings of different sizes, several groups of electromagnetic rings are arranged vertically. The ethyl acetate liquid passes through the annular groove between two groups of electromagnetic rings. The arrangement of several groups of electromagnetic rings can effectively increase the contact surface with the ethyl acetate liquid, so as to fully adsorb the metal substances in the ethyl acetate liquid.

[0014] As a further technical solution of the present invention, a fixed card slot for cooperating with the docking chuck is provided on the surface of the electromagnetic ring. A flushing pipe for cooperating with the electromagnetic ring is provided at the upper end of the magnetic filter, and a sewage discharge pipe for cooperating with the electromagnetic ring is provided at the lower end of the magnetic filter. When the rotating chuck rotates the electromagnetic filtering element to the lower end of the flushing pipe, the power between the connector and the electromagnetic filtering element is cut off, so that the electromagnetic ring loses magnetism. The flushing liquid is introduced through the flushing pipe, and the flushing liquid flushes the electromagnetic ring downward to clean the electromagnetic ring. After drying the electromagnetic ring, it is convenient for repeated use.

[0015] As a further technical solution of the present invention, an annular sliding groove for cooperating with the connector is provided inside the moving ring. A liquid discharge pipe is fixedly installed on one side of the core filter. Due to the setting of the rotating chuck, the electromagnetic filtering element has a rotating replacement structure, and the electromagnetic filtering element needs to be energized during use. To avoid the winding of the power cord of the electromagnetic filtering element, by setting a connector and cooperating with the setting of the moving ring, it has a mobile electrical connection structure.

[0016] As a further technical solution of the present invention, the connector includes a telescopic plug and a sliding chuck. The telescopic plug is movably installed at the middle position of one end of the sliding chuck. A telescopic sleeve for cooperating with the telescopic plug is provided inside the sliding chuck, and an electric wire is fixedly installed at the rear end of the telescopic plug. During operation, the use position of the telescopic plug is adjusted by using the sliding chuck. When the electric wire is connected to the power supply, after the telescopic plug is installed in the docking groove, the corresponding electromagnetic filtering element is in an energized state.

[0017] As a further technical solution of the present invention, the moving rings of the sliding card holder are driven by casters, and the telescopic plug and the sliding card holder are driven by a transverse push rod. The transverse push rod is used to drive the telescopic plug to move, so that the telescopic plug can complete the insertion and separation operations with the docking groove. When the rotating card holder rotates, the sliding card holder is driven by the casters to perform corresponding position adjustment on the moving ring.

[0018] A method for using a double filtration device includes the following steps:

[0019] Step 1: Use the lifting push rod to drive the lifting pressure plate, so that the lifting pressure plate drives the two groups of lifting joints to move downward at the same time, so that the lifting joints are mutually docked with the annular card slots of the electromagnetic filter element;

[0020] Step 2: Introduce ethyl acetate liquid into the interior of the magnetic filter through the liquid inlet pipe, and use the connector to energize the electromagnetic filter element connected by the connecting pipe, so that the electromagnetic ring in the electromagnetic filter element generates magnetism. When the ethyl acetate liquid passes through the electromagnetic ring, the metal impurities in the ethyl acetate liquid are adsorbed and filtered. The preliminarily filtered ethyl acetate liquid is discharged into the interior of the core filter through the connecting pipe, and the filter element structure in the core filter is used to perform secondary filtration on the ethyl acetate liquid.

[0021] Advantages of the present invention:

[0022] 1. By setting the lifting pressure plate and the rotating card holder, in this double filtration device, in cooperation with the use of the electromagnetic filtration structure, it can perform rotary filter element cleaning operations, thereby prolonging its filtration service life and improving its use effect;

[0023] During operation, by using the setting of the rotating rod and driving the rotating rod through a motor, the rotating rod drives the rotating card seat to rotate, enabling the rotating card seat to have a rotating replacement structure inside the magnetic filter. Several groups of electromagnetic filter elements are installed on the rotating card seat. When the electromagnetic filter elements are fully adsorbed, the replacement operation of the electromagnetic filter elements can be completed through the rotating card seat, so that the electromagnetic filter element at the lower end of the connecting pipe is rotated and moved to the lower end of the flushing pipe. Because a rotary replacement structure is adopted, the electromagnetic filter element needs to be flushed and docked after being rotated and adjusted. To ensure the docking tightness of the electromagnetic filter element and prevent ethyl acetate liquid from overflowing from the end of the electromagnetic filter element, by setting a lifting pressure plate and driving the lifting pressure plate with a lifting push rod, the lifting pressure plate drives two lifting joints to move downward at the same time, so that the lifting joints are docked with the annular card slots of the electromagnetic filter element, ensuring that the electromagnetic filter element remains sealed during use and cleaning operations. At the same time, during rotation adjustment, the electromagnetic filter element and the lifting joint can be separated to facilitate the adjustment of the rotating card seat. When the rotating card seat rotates the electromagnetic filter element to the lower end of the flushing pipe, the power is cut off between the connector and the electromagnetic filter element, causing the electromagnetic ring to lose its magnetism. The flushing liquid is introduced through the flushing pipe, and the flushing liquid flushes the electromagnetic ring downward to clean the electromagnetic ring. After drying the electromagnetic ring, it is convenient for repeated use.

[0024] 2. By setting a connector and a moving ring, when the dual-filtering device is in use, the use of the rotating card seat is optimized to avoid cable entanglement and make it a mobile auxiliary power connection structure.

[0025] During use, due to the setting of the rotating card seat, the electromagnetic filter element has a rotating replacement structure, and the electromagnetic filter element needs to be powered on during use. To avoid the power cord of the electromagnetic filter element from being entangled, by setting a connector and cooperating with the setting of the moving ring, corresponding movement adjustment can be made according to the position of the electromagnetic filter element to meet the power connection and power-off use of the electromagnetic filter element at different positions. When the rotating card seat rotates, the sliding card seat is driven by casters to make corresponding position adjustments on the moving ring, so that the connector moves to the corresponding position following the rotating card seat. The telescopic plug is driven by a horizontal push rod to move, so that the telescopic plug completes the insertion and separation operations with the docking slot. The use position of the telescopic plug is adjusted by the sliding card seat. When the wire is powered on, after the telescopic plug is installed in the docking slot, the corresponding electromagnetic filter element is in an energized state. When the rotating card seat rotates the electromagnetic filter element to the lower end of the flushing pipe, the power is cut off between the connector and the electromagnetic filter element, causing the electromagnetic ring to lose its magnetism. When performing magnetic filtering operations, the connector and the electromagnetic filter element are in an energized state.

[0026] 3. By setting the electromagnetic filter element and the electromagnetic ring, when the dual-filtering device is in use, its magnetic filtering structure is optimized to improve its magnetic filtering effect.

[0027] During operation, an electromagnetic filter connected by a connecting pipe is energized using a connector, causing the electromagnetic rings inside the electromagnetic filter to generate magnetism. When the ethyl acetate liquid passes through the electromagnetic rings, metal impurities in the ethyl acetate liquid are adsorbed and filtered. The preliminarily filtered ethyl acetate liquid is discharged into the core filter through the connecting pipe, and the filter element structure inside the core filter is used to perform secondary filtration. By setting several groups of electromagnetic rings of different sizes vertically, the ethyl acetate liquid passes through the annular groove between two groups of electromagnetic rings. The arrangement of several groups of electromagnetic rings can effectively increase the contact area with the ethyl acetate liquid, thereby fully adsorbing the metal substances in the ethyl acetate liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] Figure 1 is the overall structural schematic diagram of a dual - filtration device of the present invention;

[0030] Figure 2 is the internal structural diagram of the magnetic filter in a dual - filtration device of the present invention;

[0031] Figure 3 is the overall structural diagram of the rotary chuck in a dual - filtration device of the present invention;

[0032] Figure 4 is the internal structural diagram of the electromagnetic filter in a dual - filtration device of the present invention;

[0033] Figure 5 is the overall structural diagram of the electromagnetic ring in a dual - filtration device of the present invention;

[0034] Figure 6 is the overall structural diagram of the lifting pressure plate in a dual - filtration device of the present invention;

[0035] Figure 7 is the overall structural diagram of the moving ring in a dual - filtration device of the present invention;

[0036] Figure 8 is the planar structural diagram of the connector in a dual - filtration device of the present invention;

[0037] Figure 9 is the state change diagram of the lifting pressure plate during use in a dual - filtration device of the present invention.

[0038] In the figure: 1, magnetic filter; 2, cartridge filter; 3, drain pipe; 4, flushing pipe; 5, liquid inlet pipe; 6, connecting pipe; 7, moving ring; 8, drain pipe; 9, electromagnetic filter element; 10, lifting push rod; 11, lifting pressing plate; 12, rotating clamping seat; 13, rotating rod; 14, docking groove; 15, electromagnetic ring; 16, docking chuck; 17, fixed clamping groove; 18, lifting joint; 19, inner sleeve; 20, connector; 21, annular sliding groove; 22, electric wire; 23, telescopic sleeve; 24, telescopic plug; 25, sliding clamping seat; 26, transverse push rod; 27, circular notch. Detailed implementation manner

[0039] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0040] As Figure 1 shown, a dual-filtering device includes a magnetic filter 1 and a cartridge filter 2. The magnetic filter 1 is fixedly installed on one side of the cartridge filter 2, and the magnetic filter 1 and the cartridge filter 2 are connected through a connecting pipe 6. Inside the magnetic filter 1, a rotating clamping seat 12 is movably installed, and several groups of electromagnetic filter elements 9 are annularly distributed inside the rotating clamping seat 12. The overall structure of the electromagnetic filter element 9 is cylindrical, and several groups of electromagnetic rings 15 are distributed inside the electromagnetic filter element 9. Inside the magnetic filter 1, lifting pressing plates 11 are movably installed above and below the electromagnetic filter element 9. One end of the lifting pressing plate 11 is equipped with two lifting joints 18 that cooperate with the electromagnetic filter element 9. On the outer surface of the side of the magnetic filter 1, a moving ring 7 is fixedly installed, and inside the moving ring 7, a connector 20 that cooperates with the rotating clamping seat 12 is movably installed.

[0041] To solve the deficiencies existing in its magnetic filtering operation, as Figure 3 shown, annular clamping grooves for cooperating with the lifting joints 18 are provided at both ends of the electromagnetic filter element 9. The rotating clamping seat 12 and the magnetic filter 1 are movably connected through a rotating rod 13. With the arrangement of the rotating rod 13, the rotating clamping seat 12 can make the inside of the magnetic filter 1 have a rotating replacement structure. Several groups of electromagnetic filter elements 9 are installed on the rotating clamping seat 12. When the electromagnetic filter element 9 is fully adsorbed, the replacement operation of the electromagnetic filter element 9 can be completed through the rotating clamping seat 12.

[0042] As Figure 2As shown in the figure, a circular notch 27 for cooperating with the rotating rod 13 is provided in the middle of the lifting pressure plate 11. The lifting pressure plate 11 and the magnetic filter 1 are driven by a lifting push rod 10. After the rotating chuck 12 completes the replacement operation of the electromagnetic filter element 9, to ensure the docking sealing performance of the electromagnetic filter element 9 and prevent the ethyl acetate liquid from overflowing from the end of the electromagnetic filter element 9, by setting the lifting pressure plate 11 and driving the lifting pressure plate 11 by the lifting push rod 10, the lifting pressure plate 11 drives two sets of lifting joints 18 to move downward at the same time, so that the lifting joints 18 are docked with the annular card slots of the electromagnetic filter element 9, making the electromagnetic filter element 9 maintain a sealed docking during use and cleaning operations.

[0043] Two sets of inner sleeves 19 are fixedly installed at the other end of the lifting pressure plate 11. A liquid inlet pipe 5 for cooperating with the electromagnetic filter element 9 is provided at the lower end of the magnetic filter 1. During use, the ethyl acetate liquid is introduced into the magnetic filter 1 through the liquid inlet pipe 5, and the electromagnetic filter element 9 connected to the connecting pipe 6 is energized by the connector 20, so that the electromagnetic ring 15 in the electromagnetic filter element 9 generates magnetism. When the ethyl acetate liquid passes through the electromagnetic ring 15, the metal impurities in the ethyl acetate liquid are adsorbed and filtered. The preliminarily filtered ethyl acetate liquid is discharged into the core filter 2 through the connecting pipe 6, and the core filter 2 uses the filter element structure inside to perform secondary filtration treatment on it.

[0044] To improve its magnetic filtration effect, as Figure 4 shown, the electromagnetic ring 15 and the electromagnetic filter element 9 are connected and fixed through a docking chuck 16. The diameters of several groups of electromagnetic rings 15 are in a decreasing state, and an annular groove is provided between two sets of electromagnetic rings 15. To improve the contact effect between the ethyl acetate liquid and the electromagnetic ring 15, by setting several groups of electromagnetic rings 15 of different sizes, several groups of electromagnetic rings 15 are arranged vertically, and the ethyl acetate liquid passes through the annular groove between two sets of electromagnetic rings 15. The arrangement of several groups of electromagnetic rings 15 can effectively increase the contact surface with the ethyl acetate liquid, thereby fully adsorbing the metal substances in the ethyl acetate liquid.

[0045] As Figure 5 shown, a fixed card slot 17 for cooperating with the docking chuck 16 is provided on the surface of the electromagnetic ring 15. A flushing pipe 4 for cooperating with the electromagnetic ring 15 is provided at the upper end of the magnetic filter 1, and a sewage pipe 3 for cooperating with the electromagnetic ring 15 is provided at the lower end of the magnetic filter 1. When the rotating chuck 12 rotates the electromagnetic filter element 9 to the lower end of the flushing pipe 4, the power supply between the connector 20 and the electromagnetic filter element 9 is cut off, so that the electromagnetic ring 15 loses magnetism. The flushing liquid is introduced through the flushing pipe 4, and the flushing liquid flushes the electromagnetic ring 15 downward to clean the electromagnetic ring 15. After the electromagnetic ring 15 is dried, it is convenient for repeated use.

[0046] As Figure 7As shown in the figure, an annular chute 21 for cooperating with the connector 20 is provided on the inner side of the moving ring 7. A drain pipe 8 is fixedly installed on one side of the core filter 2. Due to the setting of the rotary chuck 12, the electromagnetic filter element 9 has a rotary replacement structure. When the electromagnetic filter element 9 is in use, it needs to be powered on. To avoid the winding of the power cord of the electromagnetic filter element 9, by setting the connector 20 and cooperating with the setting of the moving ring 7, it has a mobile electrical connection structure.

[0047] The connector 20 includes a telescopic plug 24 and a sliding chuck 25. The telescopic plug 24 is movably installed at the middle position of one end of the sliding chuck 25. A telescopic sleeve 23 for cooperating with the telescopic plug 24 is provided inside the sliding chuck 25. And a wire 22 is fixedly installed at the rear end of the telescopic plug 24. During operation, the use position of the telescopic plug 24 is adjusted by using the sliding chuck 25. When the wire 22 is connected to the power supply, after the telescopic plug 24 is installed in the docking groove 14, the corresponding electromagnetic filter element 9 is in an energized state.

[0048] The moving ring 7 of the sliding chuck 25 is driven by casters. The telescopic plug 24 and the sliding chuck 25 are driven by a transverse push rod 26. The telescopic plug 24 is driven to move by using the transverse push rod 26, so that the telescopic plug 24 completes the insertion and separation operations with the docking groove 14. When the rotary chuck 12 rotates, the sliding chuck 25 is driven by the casters to make corresponding position adjustments on the moving ring 7.

[0049] A method for using a dual filtration device includes the following steps:

[0050] Step 1, use the lifting push rod 10 to drive the lifting pressure plate 11, so that the lifting pressure plate 11 drives the two groups of lifting joints 18 to move downward at the same time, so that the lifting joints 18 are mutually docked with the annular card slots of the electromagnetic filter element 9;

[0051] Step 2, introduce ethyl acetate liquid into the magnetic filter 1 through the liquid inlet pipe 5, and perform an energization operation on the electromagnetic filter element 9 connected by the connector 20 to the connecting pipe 6, so that the electromagnetic ring 15 in the electromagnetic filter element 9 generates magnetism. When the ethyl acetate liquid passes through the electromagnetic ring 15, the metal impurities in the ethyl acetate liquid are adsorbed and filtered. The preliminarily filtered ethyl acetate liquid is discharged into the core filter 2 through the connecting pipe 6, and the ethyl acetate liquid is subjected to secondary filtration treatment by using the filter element structure in the core filter 2.

[0052] During use, by setting the lifting pressure plate 11 and the rotary chuck 12, in this dual filtration device, in cooperation with the use of the electromagnetic filtration structure, it can perform a rotary filter element cleaning operation, thereby prolonging its filtration use time and improving its use effect;

[0053] During operation, by using the setting of the rotating rod 13 and driving the rotating rod 13 through a motor, the rotating rod 13 drives the rotating card holder 12 to rotate, so that the rotating card holder 12 can make the inside of the magnetic filter 1 have a rotating replacement structure. A number of electromagnetic filtering elements 9 are installed on the rotating card holder 12. When the electromagnetic filtering elements 9 are fully adsorbed, the replacement operation of the electromagnetic filtering elements 9 can be completed through the rotating card holder 12, so that the electromagnetic filtering element 9 at the lower end of the connecting pipe 6 is rotated and moved to the lower end of the flushing pipe 4. Because of the rotating replacement structure, the electromagnetic filtering element 9 needs to be flushed and docked after rotation adjustment. To ensure the docking tightness of the electromagnetic filtering element 9 and prevent the ethyl acetate liquid from overflowing from the end of the electromagnetic filtering element 9, by setting the lifting pressure plate 11 and driving the lifting pressure plate 11 by the lifting push rod 10, the lifting pressure plate 11 drives the two lifting joints 18 to move downward at the same time, so that the lifting joints 18 are docked with the annular card slots of the electromagnetic filtering element 9, making the electromagnetic filtering element 9 keep a sealed docking during use and cleaning operations. At the same time, during rotation adjustment, the electromagnetic filtering element 9 and the lifting joint 18 can be separated to facilitate the adjustment of the rotating card holder 12. When the rotating card holder 12 rotates the electromagnetic filtering element 9 to the lower end of the flushing pipe 4, the power between the connector 20 and the electromagnetic filtering element 9 is cut off, so that the electromagnetic ring 15 loses its magnetism. The flushing liquid is introduced through the flushing pipe 4, and the flushing liquid flushes the electromagnetic ring 15 downward to clean the electromagnetic ring 15. After the electromagnetic ring 15 is dried, it is convenient for repeated use;

[0054] By setting the connector 20 and the moving ring 7, during the use of this double filtering device, the use of the rotating card holder 12 is optimized to avoid the phenomenon of cable entanglement and make its mobile auxiliary power connection structure;

[0055] During use, due to the setting of the rotating card seat 12, the electromagnetic filter element 9 has a rotating replacement structure. Since the electromagnetic filter element 9 needs to be powered on during use, to avoid the entanglement of the power cord of the electromagnetic filter element 9, by setting the connector 20 and cooperating with the setting of the moving ring 7, corresponding movement adjustment can be made according to the position of the electromagnetic filter element 9 to meet the power connection and disconnection use of the electromagnetic filter element 9 at different positions. When the rotating card seat 12 rotates, the sliding card seat 25 is driven by the casters to make corresponding position adjustment on the moving ring 7, so that the connector 20 moves to the corresponding position following the rotating card seat 12. The telescopic plug 24 is driven to move by the transverse push rod 26, so that the telescopic plug 24 completes the insertion and separation operations with the docking groove 14. The use position of the telescopic plug 24 is adjusted by the sliding card seat 25. After the wire 22 is powered on, when the telescopic plug 24 is installed in the docking groove 14, the corresponding electromagnetic filter element 9 is in the powered-on state. When the rotating card seat 12 rotates the electromagnetic filter element 9 to the lower end of the flushing pipe 4, the power between the connector 20 and the electromagnetic filter element 9 is cut off, so that the electromagnetic ring 15 loses magnetism. When performing magnetic filtration operation, the connector 20 and the electromagnetic filter element 9 are in the powered-on state;

[0056] By setting the electromagnetic filter element 9 and the electromagnetic ring 15, when the double filtration device is in use, its magnetic filtration structure is optimized to improve its magnetic filtration effect;

[0057] During operation, the electromagnetic filter element 9 connected to the communicating pipe 6 is powered on by the connector 20, so that the electromagnetic ring 15 in the electromagnetic filter element 9 generates magnetism. When the ethyl acetate liquid passes through the electromagnetic ring 15, the metal impurities in the ethyl acetate liquid are adsorbed and filtered. The preliminarily filtered ethyl acetate liquid is discharged into the inside of the core filter 2 through the communicating pipe 6, and the secondary filtration treatment is carried out by using the filter element structure in the core filter 2. By setting several groups of electromagnetic rings 15 with different sizes, the several groups of electromagnetic rings 15 are arranged vertically. The ethyl acetate liquid passes through the annular groove between the two groups of electromagnetic rings 15. The arrangement between the several groups of electromagnetic rings 15 can effectively increase the contact surface with the ethyl acetate liquid, so as to fully adsorb the metal substances in the ethyl acetate liquid.

[0058] The above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to it as equivalent embodiments with equivalent changes within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A double filtration device, characterized in that: The invention comprises a magnetic filter (1) and a core filter (2), wherein the magnetic filter (1) is fixedly mounted on one side of the core filter (2), and the magnetic filter (1) and the core filter (2) are connected through a connecting pipe (6); a rotating holder (12) is movably mounted inside the magnetic filter (1), and a plurality of groups of electromagnetic filter elements (9) are distributed in an annular shape on the inner side of the rotating holder (12); the electromagnetic filter element (9) is a columnar structure as a whole, and a plurality of groups of electromagnetic rings (15) are distributed inside the electromagnetic filter element (9); a lifting and pressing plate (11) is movably mounted above and below the electromagnetic filter element (9) inside the magnetic filter (1), and one end of the lifting and pressing plate (11) is mounted with two groups of lifting joints (18) used in conjunction with the electromagnetic filter element (9); a moving ring (7) is fixedly mounted on the outer surface of the side edge of the magnetic filter (1), and a connector (20) used in conjunction with the rotating holder (12) is movably mounted on the inner side of the moving ring (7).

2. A double filtration device according to claim 1, characterized in that: Both ends of the electromagnetic filter element (9) are provided with an annular groove used in conjunction with a lifting joint (18), and the rotating base (12) and the magnetic filter (1) are movably connected via a rotating rod (13).

3. A double filtration device according to claim 1, characterized in that: A circular notch (27) used in conjunction with the rotating rod (13) is provided in the middle of the lifting and pressing plate (11), and the lifting and pressing plate (11) and the magnetic filter (1) are driven by a lifting push rod (10).

4. A double filtration device according to claim 1, characterized in that: Two groups of inner sleeves (19) are fixedly mounted on the other end of the lifting and lowering plate (11), and a liquid inlet pipe (5) used in conjunction with the electromagnetic filter element (9) is provided at the lower end of the magnetic filter (1).

5. A double filtration device according to claim 1, characterized in that: The electromagnetic ring (15) and the electromagnetic filter element (9) are connected and fixed via a docking clamp (16); the calibers of the plurality of groups of electromagnetic rings (15) are in a decreasing state; and an annular groove is provided between two groups of electromagnetic rings (15).

6. A double filtering device according to claim 5, characterized in that: The surface of the electromagnetic ring (15) is provided with a fixing groove (17) used in conjunction with the docking clamp (16), the upper end of the magnetic filter (1) is provided with a flushing pipe (4) used in conjunction with the electromagnetic ring (15), and the lower end of the magnetic filter (1) is provided with a sewage discharge pipe (3) used in conjunction with the electromagnetic ring (15).

7. A double filtration device according to claim 1, characterized in that: An annular sliding groove (21) for matching with the connector (20) is provided on the inner side of the movable ring (7), and a liquid discharge pipe (8) is fixedly mounted on one side of the core filter (2).

8. A double filtering device according to claim 7, characterized in that: The connector (20) comprises a telescopic plug (24) and a sliding card seat (25), wherein the telescopic plug (24) is movably mounted at the middle position of one end of the sliding card seat (25), a telescopic sleeve (23) used in conjunction with the telescopic plug (24) is provided inside the sliding card seat (25), and an electric wire (22) is fixedly mounted at the rear end of the telescopic plug (24).

9. A double filtering device according to claim 8, characterized in that: The moving rings (7) of the sliding card seat (25) are driven by casters, and the telescopic plug (24) and the sliding card seat (25) are driven by a transverse push rod (26).

10. The method for using a double filtering device according to claim 1, characterized in that: The following steps are involved: Step 1: using the lifting push rod (10) to drive the lifting and lowering pressure plate (11), so that the lifting and lowering pressure plate (11) simultaneously drives the two sets of lifting joints (18) to move downward, so that the lifting joints (18) and the annular grooves of the electromagnetic filter element (9) are connected to each other; Step 2: introducing ethyl acetate liquid into the interior of the magnetic filter (1) through the liquid inlet pipe (5), and using the connector (20) to energize the electromagnetic filter element (9) connected to the connecting pipe (6), so that the electromagnetic ring (15) in the electromagnetic filter element (9) generates magnetism. When the ethyl acetate liquid passes through the electromagnetic ring (15), the metal impurities in the ethyl acetate liquid are adsorbed and filtered. The ethyl acetate liquid after preliminary filtration is discharged into the interior of the core filter (2) through the connecting pipe (6), and the filter element structure in the core filter (2) is used to perform secondary filtration on the ethyl acetate liquid.

Images