A method and system for continuous filtration of epoxy coatings

Abstract

The application discloses a kind of continuous filtration processing method and filtration system of epoxy resin coating, it is related to epoxy resin coating processing technical field, a kind of continuous filtration system of epoxy resin coating, including tank body, further including driving element, it is installed in the inside of tank body, and driving element is installed with synchronous rotation with it centrifugal filter cartridge, the bottom of this centrifugal filter cartridge is closed, inside movable mounting has cover plate, the driving element vertically lifts cover plate, backflow filter bin, it is connected with tank body, tank body inside is installed with sealing ring, the sealing ring is located between the place and centrifugal filter cartridge between this intercommunication, the driving element drives centrifugal filter cartridge rotation simultaneously, also drive cover plate gradually descend, force centrifugal filter cartridge part to sink below sealing ring.This application can avoid continuous repeated filtration, because the residue generated in previous filtration is not cleaned in time, leading to subsequent filtration effect is poor, also can avoid the residue generated in previous filtration to cause the blockage of filter hole, improve the efficiency of filtration.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of epoxy resin coating processing, in particular to a continuous filtering treatment method and filtering system for epoxy resin coating. BACKGROUND

[0002] Epoxy resin coating refers to coating prepared by using epoxy resin as base material. It has the characteristics of strong adhesion, chemical resistance, corrosion resistance, water resistance, thermal stability and electrical insulation. However, impurities or solid particles may be generated during the production process of the coating, which need to be removed by filtering.

[0003] The existing patent application with the patent publication number CN208032017U and the publication date of November 2, 2018 is entitled "Filtering device for high-heat-resistant and high-wear-resistant epoxy resin coating". The patent comprises a box body, a feeding port, a discharging pipe and a stirring assembly and a filtering assembly arranged in the box body. The feeding port and the discharging pipe are arranged at the top and the bottom of the box body, respectively. A connecting shaft is arranged at the center of the top of the box body. A rotating motor is connected to the top of the connecting shaft. The stirring assembly and the filtering assembly are both sleeved on the connecting shaft, and the stirring assembly is located above the filtering assembly. The coating stock solution is first stirred by the stirring assembly before filtering, so that the larger particles in the coating stock solution are uniformly mixed, thereby improving the filtering efficiency of the coating. At the same time, the filtering assembly is sleeved on the connecting shaft, so that the coating stock solution fully contacts the filtering assembly, which can filter the coating stock solution, shorten the filtering period and improve the quality of the coating product.

[0004] The above-mentioned application has the following disadvantages. Although the filtering assembly can effectively filter the coating at the beginning, it cannot guarantee the effect of continuous filtering. Because there will be residues generated during each filtering process using the filtering assembly. The more the residues accumulate, the slower the filtering speed will be. Unless the residues are cleaned after each filtering process, the effect of continuous filtering can be guaranteed. However, this solution is obviously inconvenient to operate. If multiple filtering assemblies are directly installed to perform continuous filtering, the investment cost will be increased, and the multiple filtering assemblies still need to be cleaned at the end. SUMMARY

[0005] The present application aims to provide a continuous filtering treatment method and filtering system for epoxy resin coating to solve the above-mentioned problems in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] The utility model provides an epoxy resin coating continuous filtering system, which comprises a tank body, a driving element installed in the tank body, a centrifugal filter cartridge synchronously rotating with the driving element, a bottom of the centrifugal filter cartridge being closed, a movable cover plate being installed in the centrifugal filter cartridge, the driving element driving the cover plate to vertically lift, a backflow filtering bin being connected with the tank body, a sealing ring being installed in the tank body, the sealing ring being located between the connection and the centrifugal filter cartridge, a plurality of elastic limiters being annularly distributed on the bottom of the sealing ring and supporting the centrifugal filter cartridge, the driving element driving the centrifugal filter cartridge to rotate and gradually lower the cover plate, forcing the centrifugal filter cartridge to push away the elastic limiters and partially sink below the sealing ring, allowing the coating in the backflow filtering bin to flow back to the centrifugal filter cartridge for re-filtering, and the cover plate always pressing the residues during centrifugal filtration.

[0008] Preferably, the driving element comprises a driving motor fixed to the bottom of the tank body, a driving shaft fixedly connected to the output shaft of the driving motor, the driving shaft being screwed through the center of the cover plate, and supports symmetrically installed on both sides of the top of the cover plate and vertically slidingly connected with the tank body.

[0009] Preferably, a counterweight claw synchronously rotating with the driving shaft is slidingly sleeved on the driving shaft, and a chuck fixedly connected with the counterweight claw is fixedly connected to the inner wall of the centrifugal filter cartridge.

[0010] Preferably, a backflow port and a discharge port are formed between the backflow filtering bin and the tank body, a retaining ring is sleeved on the top of the centrifugal filter cartridge, and a gate is movably embedded in the inner wall of the tank body and closes the backflow port during the downward movement of the retaining ring.

[0011] Preferably, an inner air cavity is installed in the inner wall of the tank body, an outer air cavity is installed in the outer wall of the tank body and communicates with the inner air cavity, an elastic jacking rod is installed through the sealing ring, the top end of the jacking rod abuts against the bottom of the retaining ring, an inner piston ring is installed in the inner air cavity at the bottom end of the jacking rod, an outer piston ring is installed in the outer air cavity, and a pushing ring is installed in the backflow filtering bin at the top of the outer piston ring.

[0012] Preferably, the elastic limiters comprise wedge-shaped insertion rods, a guide groove matched with the wedge-shaped insertion rods is formed in the bottom of the sealing ring, a tension spring is installed between one end of the wedge-shaped insertion rod and the guide groove, and the other end of the wedge-shaped insertion rod is obliquely abutted against the edge of the centrifugal filter cartridge.

[0013] Preferably, a plurality of protrusions abutting against the counterweight claw are annularly distributed on the bottom surface of the cover plate.

[0014] Preferably, a material stirring frame synchronously rotating with the driving shaft is slidingly sleeved on the top of the driving shaft, and the material stirring frame is in contact with the top surface of the cover plate.

[0015] Preferably, a filter ring is installed on the top of the inner wall of the backflow filtering bin and covers the discharge port.

[0016] According to the treatment method of the continuous filtering system of the epoxy resin coating, the method comprises the following steps:

[0017] S1, first let the cover plate be higher than the centrifugal filter cartridge, then pour the coating into the tank, which flows into the inside of the centrifugal filter cartridge along the barrel port of the centrifugal filter cartridge, that is, below the cover plate;

[0018] S2, the stirring part drives the centrifugal filter cartridge to rotate, so that the coating is quickly filtered under the action of centrifugal force, and the filtered coating enters the reflux filtering bin for temporary storage, and the stirring part simultaneously drives the cover plate to gradually descend;

[0019] S3, when the cover plate presses the centrifugal filter cartridge downward, forcing the centrifugal filter cartridge to push away the elastic limiting part and partially sink below the sealing ring, at this time the coating in the reflux filtering bin flows down from the barrel port of the centrifugal filter cartridge;

[0020] S4, the coating that flows back into the centrifugal filter cartridge drips downward again after being filtered by the centrifugal filter cartridge, and finally is discharged from the bottom of the tank.

[0021] In the above technical solution, the driving part is arranged to drive the centrifugal filter cartridge to rotate, when the coating enters the centrifugal filter cartridge from below the opened cover plate, the coating is centrifugally filtered by the centrifugal filter cartridge, and the filtered coating is stored in the reflux filtering bin, the cover plate can also simultaneously extrude the coating in the centrifugal filter cartridge during centrifugal filtering, accelerating the filtering of the coating, after the driving part synchronously drives the cover plate to descend and extrude the centrifugal filter cartridge, the coating in the reflux bin flows back into the centrifugal filter cartridge from above, and the coating is filtered again by the centrifugal filter cartridge, and before this filtering, since the cover plate has previously pressed all the residues generated by the previous centrifugal filtering at the bottom of the centrifugal filter cartridge, it can avoid the situation that the filtering effect is poor due to the residues generated by the previous filtering not being cleaned in time during continuous repeated filtering, and can also avoid the situation that the residues generated by the previous filtering block the filter holes, thereby improving the filtering efficiency.

[0022] It should be understood that the foregoing general description and the following detailed description are only exemplary and illustrative, but not for limiting the full scope or all features of the disclosed technology.

[0023] The present application file provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0025] Figure 1The whole structure schematic diagram of the continuous filtering system of the epoxy resin coating of the present application;

[0026] Figure 2 The whole sectional view of the continuous filtering system of the epoxy resin coating of the present application;

[0027] Figure 3 The structure schematic diagram of the tank body in the continuous filtering system of the epoxy resin coating of the present application;

[0028] Figure 4 The internal structure schematic diagram of the tank body in the continuous filtering system of the epoxy resin coating of the present application;

[0029] Figure 5 The connection schematic diagram of the centrifugal filter cartridge and the sealing ring in the continuous filtering system of the epoxy resin coating of the present application;

[0030] Figure 6 The connection schematic diagram of the sealing ring and the elastic limiting piece in the continuous filtering system of the epoxy resin coating of the present application;

[0031] Figure 7 The connection schematic diagram of the driving piece and the centrifugal filter cartridge in the continuous filtering system of the epoxy resin coating of the present application;

[0032] Figure 8 The connection schematic diagram of the driving piece and the cover plate in the continuous filtering system of the epoxy resin coating of the present application.

[0033] Explanation of reference signs:

[0034] 1, tank body; 101, sealing ring; 102, backflow port; 103, drainage port; 104, inner air cavity; 105, outer air cavity; 106, elastic ejector rod; 107, inner piston ring; 108, outer piston ring; 109, pushing ring; 110, guide groove; 111, shutter; 112, limiting sliding groove; 113, through hole; 114, second reset spring; 2, driving piece; 201, driving motor; 202, driving shaft; 203, counterweight claw; 3, centrifugal filter cartridge; 301, cover plate; 302, support; 303, chuck; 304, retaining ring; 305, protrusion; 306, first reset spring; 4, backflow filtering bin; 401, filter ring; 402, bin cover; 5, elastic limiting piece; 501, wedge-shaped insertion rod; 502, top spring; 6, material stirring frame. DETAILED DESCRIPTION

[0035] The technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without any creative effort belong to the scope of protection of the present disclosure.

[0036] Please refer to Figures 1-8 The continuous filtering system for epoxy resin paint provided by the embodiments of the present disclosure comprises a tank body 1, further comprises a driving member 2 installed inside the tank body 1, and a centrifugal filter cartridge 3 rotating synchronously with the driving member 2 is installed on the driving member 2. The bottom of the centrifugal filter cartridge 3 is closed, and a cover plate 301 is movably installed inside the centrifugal filter cartridge 3. The driving member 2 drives the cover plate 301 to vertically lift. A backflow filtering bin 4 is connected with the tank body 1. A sealing ring 101 is installed inside the tank body 1, and is located between the connecting position and the centrifugal filter cartridge 3. A plurality of elastic limiting members 5 lifting the centrifugal filter cartridge 3 are annularly distributed at the bottom of the sealing ring 101. The driving member 2 drives the centrifugal filter cartridge 3 to rotate, and at the same time, drives the cover plate 301 to gradually descend, forces the centrifugal filter cartridge 3 to push away the elastic limiting members 5 and partially sink below the sealing ring 101, so that the paint in the backflow filtering bin 4 is discharged back to the centrifugal filter cartridge 3 for re-filtering. At the same time, the cover plate 301 always extrudes the residues during centrifugal filtering.

[0037] Specifically, in use, first control the driving member 2 to adjust the cover plate 301 to rise to the upper side of the centrifugal filter drum 3, let the centrifugal filter drum 3 be in the open state, then pour paint into the centrifugal filter drum 3, after the paint is completely poured, open the driving member 2 to drive the centrifugal filter drum 3 to rotate, the paint has begun to filter when pouring, part of the paint flows out along the filter hole of the outer periphery of the centrifugal filter drum 3, but the filtering speed needs to be improved, so that the paint is quickly filtered out by the centrifugal force generated by the rotation of the centrifugal filter drum 3, improve the filtering efficiency, and the cover plate 301 will be lowered and extruded in the centrifugal filter drum 3, accelerate its filtering speed, although the centrifugal filter drum 3 can be lifted on the driving member 2, but the plurality of elastic limit members 5 installed on the sealing ring 101 will limit the rotation of the centrifugal filter drum 3 during centrifugal filtration, so that the bottom of the centrifugal filter drum 3 and the sealing ring 101 remain on the same horizontal plane, so that the paint filtered by centrifugal filtration can flow into the backflow filter bin 4, until the cover plate 301 is lowered to a certain height and presses the centrifugal filter drum 3 to move downward, the bottom of the centrifugal filter drum 3 pushes open each elastic limit member 5, and the lower half of the centrifugal filter drum 3 passes through the sealing ring 101, at this time, the paint stored in the backflow filter bin 4 flows out from the top of the centrifugal filter drum 3, so that the paint is filtered again through the centrifugal filter drum 3, the paint filtered this time will flow directly to the bottom of the centrifugal filter drum 3, facilitating subsequent discharge from the tank 1, and the cover plate 301 has extruded the residues during the previous centrifugal filtration at the bottom of the centrifugal filter drum 3 before filtering, which can avoid the residues from mixing with the paint again, ensure the efficiency of the paint filtering again, prevent the residues from blocking the filter hole during the second filtration, and finally let the filtered paint be discharged from the discharge valve at the bottom of the tank 1.

[0038] Compared with the prior art, the embodiment of the application drives the centrifugal filter drum 3 to rotate by setting the driving member 2, when the paint enters the centrifugal filter drum 3 from below the opened cover plate 301, is centrifugally filtered by the centrifugal filter drum 3, and the filtered paint is stored in the backflow filter bin 4, the cover plate 301 can also extrude the paint in the centrifugal filter drum 3 during centrifugal filtration, accelerate the filtering of the paint, after the driving member 2 drives the cover plate 301 to descend and extrude the centrifugal filter drum 3, the paint in the backflow bin flows back into the drum from above the centrifugal filter drum 3, and the paint is filtered again by the centrifugal filter drum 3, and before this filtering, the residues generated during the previous centrifugal filtration are all pressed at the bottom of the centrifugal filter drum 3 by the cover plate 301 in advance, which can avoid the residues generated during the previous filtration from being cleaned in time, resulting in poor subsequent filtering effect, and can also avoid the residues generated during the previous filtration from blocking the filter hole, improving the filtering efficiency.

[0039] In a further embodiment of the present application, the driving member 2 comprises a driving motor 201 fixed to the bottom of the tank body 1, the output shaft of the driving motor 201 is fixedly connected with a driving shaft rod 202, the driving shaft rod 202 is screwed through the center of the cover plate 301, the length of the thread on the driving shaft rod 202 is less than the length of the driving shaft rod 202 itself, and two supports 302 are symmetrically arranged on the top of the cover plate 301, the supports 302 are vertically slidably connected with the tank body 1, and the tank body 1 is vertically provided with limiting sliding grooves 112 on both sides for lifting the supports 302, and the inner wall of the centrifugal filter cartridge 3 is provided with a first reset spring 306 matched with the cover plate 301, specifically, when the driving shaft rod 202 rotates, the cover plate 301 and the driving shaft rod 202 are screwed, and the cover plate 301 is limited in angle by the connection between the supports 302 and the tank body 1, so that the driving shaft rod 202 drives the cover plate 301 to rise and fall, when the cover plate 301 abuts against the centrifugal filter cartridge 3 through the sealing ring 101, the cover plate 301 is no longer screwed with the driving shaft rod 202, at this time, the driving shaft rod 202 continues to rotate in the original direction, only drives the centrifugal filter cartridge 3 to rotate, and does not force the cover plate 301 to continue to fall, so as to avoid that the centrifugal filter cartridge 3 cannot normally rotate when secondary filtering, when the driving shaft rod 202 reversely rotates, the first reset spring 306 lifts the cover plate 301 from below until the cover plate 301 is screwed with the driving shaft rod 202 again, at this time, the driving shaft rod 202 can drive the cover plate 301 to rise and reset, so as to facilitate lifting the centrifugal filter cartridge 3 to filter the remaining paint, realize continuous operation, and the cover plate 301 also cleans the paint adhered to the wall of the centrifugal filter cartridge 3 during the up-and-down movement in the centrifugal filter cartridge 3, when the centrifugal filter cartridge 3 rises and falls, the inner ring of the sealing ring 101 also scrapes the paint adhered to the outer wall, avoids accumulation and solidification of the paint, and facilitates cleaning.

[0040] In a further embodiment of the present application, the driving shaft rod 202 is slidably sleeved with a counterweight claw 203 which rotates synchronously with the driving shaft rod 202, and the inner wall of the centrifugal filter cartridge 3 is fixedly connected with a chuck 303 which is clamped with the counterweight claw 203, specifically, during the up-and-down movement of the centrifugal filter cartridge 3, the counterweight claw 203 is always clamped in the chuck 303 in the centrifugal filter cartridge 3 under the gravity of the counterweight claw 203, and the lifting of the centrifugal filter cartridge 3 does not affect the rotation of the centrifugal filter cartridge 3 driven by the driving member 2, which ensures the stability of the centrifugal filtration.

[0041] In a further embodiment of the present application, a plurality of backflow openings 102 and drainage openings 103 are formed between the backflow filtering bin 4 and the tank body 1, a blocking ring 304 is sleeved on the top of the centrifugal filter cartridge 3, a gate plate 111 corresponding to the backflow openings 102 is movably embedded on the inner wall of the tank body 1, the top of the gate plate 111 is lapped on the top edge of the blocking ring 304, a through hole 113 matching the drainage openings 103 is formed on the gate plate 111, and the gate plate 111 closes the backflow openings 102 during the descending of the blocking ring 304. Specifically, when the centrifugal filter cartridge 3 is above the elastic limiting member 5, the blocking ring 304 on the centrifugal filter cartridge 3 will lift the gate plate 111, so that the backflow openings 102 are in an open state, and the paint filtered for the first time flows into the backflow filtering bin 4 through the backflow openings 102 under the action of centrifugal force. When the centrifugal filter cartridge 3 is forced to pass through the sealing ring 101 from top to bottom, the gate plate 111 always covers the backflow openings 102 under the action of gravity, so that the paint in the backflow filtering bin 4 cannot flow back to the tank through the backflow openings 102. After the backflow openings 102 are closed by the gate plate 111, the paint stored in the backflow filtering bin 4 can flow into the centrifugal filter cartridge 3 through the open drainage openings 103.

[0042] In a further embodiment of the present application, the inner gas cavity 104 is installed on the inner wall of the tank body 1, the outer gas cavity 105 is installed on the outer wall of the tank body 1 and communicates with the inner gas cavity 104, the elastic top rod 106 is installed through the sealing ring 101, the inner piston ring 107 is installed at the bottom of the elastic top rod 106 in the inner gas cavity 104, the second reset spring 114 is sleeved on the top of the elastic top rod 106, the top end of the elastic top rod 106 abuts against the bottom of the blocking ring 304, the outer piston ring 108 is installed in the outer gas cavity 105, and the pushing ring 109 is installed on the top of the outer piston ring 108 in the backflow filtering bin 4. Specifically, when the centrifugal filter cartridge 3 is forced to continuously move downward, the blocking ring 304 on the centrifugal filter cartridge 3 presses the elastic top rod 106 downward, the elastic top rod 106 pushes the inner piston ring 107 in the inner gas cavity 104 downward, the gas in the inner gas cavity 104 is sent into the outer gas cavity 105, and the gas gradually pushes the outer piston ring 108 upward when entering the outer gas cavity 105. The pushing ring 109 is driven by the outer piston ring 108 to move upward in the backflow filtering bin 4, so that the paint temporarily stored in the backflow filtering bin 4 is squeezed out of the tank body 1 through the backflow port 103 and flows into the centrifugal filter cartridge 3 again along the blocking ring 304, so that the filtered paint does not flow into the backflow filtering bin 4 again, but is directly discharged to the bottom of the tank, the filtered paint is conveniently discharged for subsequent processes, manual operation is avoided, an additional liquid pump is not needed to circulate the paint, and the use effect is good. When the driving shaft rod 202 rotates in the reverse direction, the second reset spring 114 cooperates with the elastic top rod 106 to reset the centrifugal filter cartridge 3, so that subsequent filtering of other paints is facilitated.

[0043] In a further embodiment of the present application, the elastic limiting part 5 includes wedge-shaped insertion rods 501, the bottom of the sealing ring 101 is provided with guide grooves 110 matched with the wedge-shaped insertion rods 501, the wedge-shaped insertion rods 501 are provided with top springs 502 between one end and the guide grooves 110, and the other end of the wedge-shaped insertion rods 501 abuts against the inclined edge of the centrifugal filter cartridge 3. Specifically, when the bottom of the centrifugal filter cartridge 3 is at the same horizontal plane as the bottom of the sealing ring 101, the wedge-shaped insertion rods 501 move toward the center of the centrifugal filter cartridge 3 under the action of the top springs 502, and the bottom of the centrifugal filter cartridge 3 is placed on the wedge-shaped insertion rods 501. The centrifugal filter cartridge 3 does not sink during initial centrifugal filtration, so that the paint filtered for the first time is prevented from directly falling to the bottom of the tank body 1. When the centrifugal filter cartridge 3 passing through the sealing ring 101 is reset upward, the wedge-shaped insertion rods 501 are pushed out again under the action of the top springs 502, so that manual adjustment is not needed, and the efficiency of continuous operation is high.

[0044] In a further embodiment of the present application, the bottom surface of the cover plate 301 is annularly distributed with a plurality of protrusions 305 that abut against the counterweight clamping jaw 203, specifically, when the cover plate 301 is pressed down on the centrifugal filter cartridge 3, the counterweight clamping jaw 203 can abut against the protrusions 305 below the cover plate 301, and when the counterweight clamping jaw 203 rotates with the transmission shaft rod, the cover plate 301 does not rotate synchronously, causing the counterweight clamping jaw 203 to intermittently abut against the plurality of protrusions 305, thereby causing the centrifugal filter cartridge 3 to vibrate, shake off the paint adhered to the surface thereof, and also allow the remaining paint in the centrifugal filter cartridge 3 to be filtered out more quickly.

[0045] In a further embodiment of the present application, the top of the drive shaft rod 202 is sleeved with a material stirring frame 6 that rotates synchronously therewith, and the material stirring frame 6 is in contact with the top surface of the cover plate 301, specifically, since the paint in the backflow filter bin 4 flows back to the centrifugal filter cartridge 3, the cover plate 301 is already in the cartridge of the centrifugal filter cartridge 3, causing the top surface of the cover plate 301 to inevitably contact the paint, and the drive shaft rod 202 drives the material stirring frame 6 to rotate synchronously, which can stir away the paint above the cover plate 301, thereby preventing the paint from being solidified, and the drive shaft rod 202 is also provided with a material scraping frame that is in contact with the outer wall of the inner air cavity 104, which scrapes off the paint adhered to the outer wall of the inner air cavity 104 when the paint is discharged from the bottom of the tank body 1.

[0046] In a further embodiment of the present application, the top of the backflow filter bin 4 is provided with a bin cover 402, and a filter ring 401 is embedded in the bin cover 402, which covers the discharge port 103, specifically, the paint in the backflow filter bin 4 is filtered again by the filter ring 401 when it is discharged back into the tank body 1, and the residual material generated by the filtering is left in the backflow filter bin 4, which can be cleaned separately by opening the bin cover 402 to clean the residual material in the backflow filter bin 4 and the filter ring 401, thereby facilitating maintenance.

[0047] According to the treatment method of the continuous filtration system of the epoxy resin paint, the treatment method comprises the following steps:

[0048] S1, first let the cover plate 301 be higher than the centrifugal filter cartridge 3, then pour the paint into the tank body 1, and the paint flows into the inside of the centrifugal filter cartridge 3 along the cartridge opening of the centrifugal filter cartridge 3, that is, below the cover plate 301;

[0049] S2, the stirring piece 2 drives the centrifugal filter cartridge 3 to rotate, so that the paint is quickly filtered out under the action of centrifugal force, and the filtered paint enters the backflow filter bin 4 for temporary storage, and the stirring piece 2 simultaneously drives the cover plate 301 to gradually descend;

[0050] S3, when the cover plate 301 presses the centrifugal filter cartridge 3 downward, forcing the centrifugal filter cartridge 3 to push open the elastic limiting piece 5 and partially sink below the sealing ring 101, at this time, the paint in the backflow filter bin 4 flows down from the cartridge opening of the centrifugal filter cartridge 3;

[0051] S4, the paint flowing back into the centrifugal filter cartridge 3 drips downward after being filtered by the centrifugal filter cartridge 3 again, and finally is discharged from the lower portion of the tank body 1.

[0052] The foregoing merely illustrates some exemplary embodiments of the application, no doubt numerous modifications and alterations can be made by those skilled in the art without departing from the spirit and scope of the application. Accordingly, the above description is intended for the purpose of illustration only and is not intended as a limitation on the present application.

Claims

1. An epoxy resin coating continuous filtration system comprising a tank body (1), characterized in that, Also include: Drive (2) is installed in the tank (1) inside, and drive (2) on the synchronous rotation of the centrifugal filter cartridge (3) is installed, the centrifugal filter cartridge (3) bottom closed, inside movable mounting cover plate (301), the drive (2) cover plate (301) vertical lifting; The drive (2) includes a drive motor (201) fixed to the bottom of the tank (1), the output shaft of the drive motor (201) is fixedly connected with the drive shaft (202), which is screwed through the center of the cover plate (301), the length of the screw thread on the drive shaft (202) is less than the length of the drive shaft (202) itself, the top of the cover plate (301) is also symmetrically provided with a support (302), which is vertically slidingly connected with the tank (1); The backflow filter bin (4) is communicated with the tank (1), and the sealing ring (101) is installed in the tank (1). The sealing ring (101) is located between the communication and the centrifugal filter cartridge (3), and the bottom of the sealing ring (101) is annularly distributed with a plurality of elastic limiters (5) for supporting the centrifugal filter cartridge (3); The backflow filter bin (4) and the tank (1) are provided with a backflow port (102) and a discharge port (103), the top of the centrifugal filter cartridge (3) is provided with a blocking ring (304), and the inner wall of the tank (1) is movably embedded with a gate (111), when the blocking ring (304) is lowered, the gate (111) closes the backflow port (102); The inner wall of the tank (1) is provided with an inner air cavity (104) at the bottom, and the outer wall is provided with an outer air cavity (105) communicated with the inner air cavity (104), the elastic top rod (106) is installed through the sealing ring (101), the top end of the elastic top rod (106) abuts against the bottom of the blocking ring (304), and the bottom end of the elastic top rod (106) is installed in the inner air cavity (104) and provided with an inner piston ring (107), the outer air cavity (105) is provided with an outer piston ring (108), and the top of the outer piston ring (108) is provided with a pushing ring (109) in the backflow filter bin (4); The elastic limiter (5) includes a wedge-shaped plug rod (501), the bottom of the sealing ring (101) is provided with a guide groove (110) matched with the wedge-shaped plug rod (501), and the wedge-shaped plug rod (501) is provided with a top spring (502) between one end and the guide groove (110), and the other end of the wedge-shaped plug rod (501) is obliquely abutted against the edge of the centrifugal filter cartridge (3); The drive (2) drives the centrifugal filter cartridge (3) to rotate, and also drives the cover plate (301) to gradually descend, forcing the centrifugal filter cartridge (3) to open the elastic limiter (5) and partially sink below the sealing ring (101), so that the paint in the backflow filter bin (4) is discharged back to the centrifugal filter cartridge (3) for re filtration, and the cover plate (301) always extrudes the residue during centrifugal filtration.

2. The continuous filtration system for epoxy coating according to claim 1, wherein, The drive shaft (202) is slidingly sleeved with a counterweight claw (203) which rotates synchronously with the drive shaft (202), and the inner wall of the centrifugal filter cartridge (3) is fixedly connected with a chuck (303) which is clamped with the counterweight claw (203).

3. An epoxy coating continuous filtration system as defined in claim 2, wherein, The bottom surface of the cover plate (301) is annularly distributed with several protrusions (305) which abut against the counterweight clamping claws (203).

4. The continuous filtration system for epoxy coating according to claim 1, wherein, The top of the driving shaft rod (202) is sleeved with a stirring frame (6) which rotates synchronously, and the stirring frame (6) is in contact with the top surface of the cover plate (301).

5. The continuous filtration system for epoxy coating according to claim 1, wherein, The inner wall of the backflow filtering bin (4) is provided with a filter ring (401) at the top, and the filter ring (401) covers the drainage port (103).

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