Filtering device for PCB developing solution

Abstract

The invention discloses a filtering device for a PCB developing solution, and belongs to the technical field of developing solution treatment. The problems that an existing developing solution filtering device is single in function, low in filtering efficiency and prone to blockage, and water content control is not considered are solved. The invention provides a device for comprehensively and efficiently treating a developing solution. The device comprises a material conveying mechanism, a separation mechanism, a dehydration mechanism, an adsorption mechanism and a water replenishing mechanism, the separating mechanism is provided with a filtering assembly for two-stage filtering, and blocking is prevented; the dewatering assembly centrifugally treats the developing solution to reduce the water content; the adsorption mechanism adsorbs soluble photoresist residues by using activated carbon; the liquidity is improved by heating and diluting the developing solution through the water supplementing mechanism; through the improvement of the shape and the structure, the problems in the prior art are solved, the production cost is reduced, and the device is suitable for the technical field of developing solution treatment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of developing solution processing, in particular to a PCB developing solution filtering device. BACKGROUND

[0002] In the manufacturing process of PCB (Printed Circuit Board), developing solution plays a crucial role. It is used to dissolve and remove the unexposed photoresist material on the PCB, thus revealing the desired circuit pattern. However, as the developing process continues, a large amount of impurities, mainly including particulate impurities and soluble photoresist residues, will gradually accumulate in the developing solution.

[0003] The presence of particulate impurities can seriously affect the performance of the developing solution. On the one hand, they may clog the nozzles or other precision components, causing the developing equipment to run unstably or even malfunction, affecting production efficiency and product quality. On the other hand, if these impurities adhere to the PCB surface, they may cause short circuits, open circuits and other defects in the subsequent processing process, reducing the yield of the PCB.

[0004] Soluble photoresist residues are also not to be ignored. They can change the chemical properties of the developing solution, affecting the uniformity and accuracy of the development, making the edges of the circuit pattern unclear and the dimensional accuracy decreased. Moreover, as the photoresist residues continue to accumulate, the replacement frequency of the developing solution will increase significantly, which not only increases the production cost, but also generates a large amount of waste developing solution, polluting the environment.

[0005] Currently, although there are some developing solution filtering devices on the market, most of these devices have single function, only capable of preliminarily filtering particulate impurities in the developing solution, and cannot effectively remove soluble photoresist residues. At the same time, in the filtering process, the flowability of the developing solution will be affected to a certain extent, resulting in low filtering efficiency and easy clogging. In addition, the existing devices do not consider the control of the water content of the developing solution when processing it, and too high water content will affect the performance of the developing solution and the subsequent processing effect. Therefore, it is of great practical significance to develop a filtering device that can comprehensively and efficiently process the developing solution. SUMMARY

[0006] The present application provides a PCB developing solution filtering device, which solves the problems of single function, low filtering efficiency and easy clogging of existing developing solution filtering devices, and does not consider the control of water content.

[0007] The present application provides the following technical solutions:

[0008] A PCB developing solution filtering device, comprising:

[0009] a material conveying mechanism;

[0010] The separation mechanism comprises a structure support, a filter cylinder body is fixedly installed on the structure support, and a filter assembly for preliminarily filtering the developer to remove particulate impurities is arranged in the filter cylinder body.

[0011] A mounting bracket is arranged on one side of the structure support, a dehydration assembly is arranged on the mounting bracket, one end of the dehydration assembly is connected with the bottom of one side of the filter cylinder body through a conveying pipe II, and the dehydration assembly is used for receiving the preliminarily filtered developer and centrifugally dehydrating the preliminarily filtered developer to reduce the water content.

[0012] An adsorption mechanism is arranged on one side of the mounting bracket, the adsorption mechanism is connected with the output end of the dehydration assembly through a bending pipe, and the adsorption mechanism is used for receiving the dehydrated developer and removing soluble photoresist residues through activated carbon adsorption.

[0013] A water replenishing mechanism is mounted on the top of the mounting bracket, the water replenishing mechanism is connected with the top side of the filter cylinder body through a conveying pipe V, and the water replenishing mechanism is used for injecting hot water into the filter cylinder body to dilute the developer and improve the flowability of the developer.

[0014] In a possible design, the material conveying mechanism comprises a base bottom plate, a support pipe is fixedly installed on the top of the base bottom plate, a plurality of fluid control valves are installed on the side wall of the support pipe at equal intervals, an external connecting pipe for connecting external pipelines is fixedly installed on one end of the fluid control valves, a conveying pump I is also fixedly installed on the top of the base bottom plate, the suction end of the conveying pump I is connected with the inside of the support pipe, and the output end of the conveying pump I is connected with the top of the filter cylinder body through a conveying pipe I.

[0015] In a possible design, the filter assembly comprises a sealing cover plate which is detachably installed on the bottom opening of the filter cylinder body, a bearing bracket is fixedly installed on the top of the sealing cover plate, an assembly mounting ring is clamped in the bearing bracket, a filter plate is fixedly installed in the assembly mounting ring, a filter cloth bag is fixedly installed on the bottom of the assembly mounting ring, and a fastening clasp for clamping and fixing the bearing bracket is fixedly installed in the filter cylinder body.

[0016] In a possible design, a driving motor I is fixedly installed on the top of the filter cylinder body, and a cleaning scraping strip in contact with the top of the filter plate is fixedly installed on the output shaft of the driving motor I and extends into the filter cylinder body.

[0017] In one possible design, the dehydration assembly includes a material separation tank fixedly mounted on the mounting frame, the material separation tank containing an isolation filter tank, one end of the conveying pipe II being connected to the filter cylinder and the other end being connected to the isolation filter tank; a rotating shaft is rotatably connected inside the isolation filter tank, and multiple centrifugal separation discs are fixedly mounted on the rotating shaft at equal intervals; a drive motor II is fixedly mounted on the mounting frame, and the output shaft of the drive motor II drives the rotating shaft to rotate through a power transmission shaft and meshing active and driven bevel gears.

[0018] In one possible design, a transfer pump III is also included, the suction end of which is connected to the bottom of the material separation tank via a transfer pipe IV, for discharging the water separated during the dehydration process.

[0019] According to the PCB developer filtration device of claim 1, the adsorption mechanism includes a delivery pump II and a filter box, the suction end of the delivery pump II is connected to the curved pipe through a delivery pipe III, the discharge end of the pump II is connected to the interior of the filter box, a top cover is detachably installed on the top of the filter box, a plurality of activated carbon filter plates extending into the filter box are fixedly installed on the bottom of the top cover, and a liquid discharge pipe is provided on the other side wall of the filter box.

[0020] In one possible design, the water replenishment mechanism includes a heat exchange box fixedly installed on the top of the mounting bracket. Inlet and outlet water pipes are respectively provided on both sides of the heat exchange box. A delivery pump IV is fixed on the outside of the heat exchange box. The suction end of the delivery pump IV is connected to a water delivery pipe, and its output end is connected to a heat exchange component located inside the heat exchange box. The output end of the heat exchange component is connected to the filter cylinder through a delivery pipe V. A one-way flow valve is provided on the delivery pipe V.

[0021] In one possible design, the heat exchange assembly includes a branch pipe, multiple heat exchange spiral coils, and a manifold. The output end of the delivery pump IV is connected to the branch pipe, the input end of the heat exchange spiral coil is connected to the branch pipe, the output end of the spiral coil is connected to the manifold, and the delivery pipe V is connected to the manifold.

[0022] In the application, when in use, first connect the external connecting pipe with the external developing solution conveying pipe, open the corresponding fluid control valve, start the conveying pump I, suck the developing solution into the supporting pipe, and convey it into the filter cylinder through the conveying pipe I; at this time, start the water supplement mechanism, hot water enters the heat exchange box through the water inlet pipe, start the conveying pump IV, water enters the shunt pipe through the water conveying pipe, and is dispersed to multiple heat exchange spiral coils; because of soaking in hot water, the water is heated to 1-2 DEG C higher than the temperature of the developing solution; the heated water is conveyed into the filter cylinder through the water collecting pipe, conveying pipe V and conveying pipe V under the action of water pressure, and is diluted to the developing solution to improve its fluidity; the developing solution entering the filter cylinder is filtered by the filter assembly, the filter plate and the filter bag carry out two-stage filtering on the developing solution to remove large particle impurities, and at the same time, the driving motor I is started to drive the cleaning scraping strip to rotate, scrape the impurities on the filter plate, and prevent blockage; the developing solution after preliminary filtration enters the isolation filter net barrel through the conveying pipe II, the driving motor II is started to drive the power transmission shaft to rotate, the driving bevel gear and the driven bevel gear are engaged to drive the rotating shaft and the centrifugal separation disc to rotate, centrifugal dewatering is carried out on the developing solution to reduce the water content, and the water after dewatering is conveyed to the material separation barrel through the isolation filter net barrel, the conveying pump III is started, and the water in the material separation barrel is discharged through the conveying pipe IV; the conveying pump II is started, the developing solution after dewatering is sucked out through the conveying pipe III and the curved pipe, and is conveyed to the filter box, the multiple activated carbon filter plates adsorb and filter the developing solution to remove soluble photoresist residues, the adsorbed developing solution is discharged for collection through the liquid discharge pipe, and pH value test is carried out again and the value is adjusted.

[0023] It should be understood that the above general description and the following detailed description are only exemplary and cannot limit the application.

[0024] Beneficial effects: in the application, after the external connecting pipe is connected with the external developing solution conveying pipe and the corresponding fluid control valve is opened, the developing solution can be sucked into the supporting pipe through the starting of the conveying pump I, and then conveyed into the filter cylinder through the conveying pump I and the conveying pipe I, so that the developing solution to be treated can be conveyed into the filter cylinder, and the developing solution can be preliminarily filtered by the filter assembly;

[0025] In the application, after the mounting ring is installed in the bearing bracket and the bearing bracket is installed in the filter cylinder, the developing solution entering the filter cylinder can be filtered by the two-stage filtering of the filter plate and the filter bag, so that when the developing solution is preliminarily filtered, the large particle impurities in the developing solution can be filtered, and the two-stage filtering can facilitate the normal flow of the developing solution and avoid the blockage of the filter plate and the filter bag;

[0026] In the application, the developer solution after preliminary filtration can be transported to the isolation filter screen barrel through the conveying pipe II, and the water content of the developer solution can be reduced by centrifugal treatment of the developer solution through the starting separation assembly.

[0027] In the application, the developer solution after dehydration treatment in the curved pipe can be sucked out by starting the conveying pump II, and then can be conveyed into the filter box, that is, the developer solution can be adsorbed and filtered by using a plurality of activated carbon filter plates, the developer solution can be adsorbed to remove the dissolved resist residues, the developer solution after adsorption is discharged through the top cover plate, then the developer solution after adsorption is collected, and the pH value of the developer solution is tested, and the developer solution is adjusted according to the test value.

[0028] The application can comprehensively and efficiently process the developer solution, the flowability is improved by heating and dilution, the particulate impurities are removed by two-stage filtration and anti-blocking, the water content is controlled by centrifugal dehydration, and the dissolved resist residues are removed by activated carbon adsorption, so that the problems of single function, low filtration efficiency, easy blocking and uncontrolled water content of the existing device are solved, and the production cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 A first perspective structure three-dimensional schematic view of the PCB developer solution filtering device provided by the embodiment of the application is provided.

[0030] Figure 2 A second perspective structure three-dimensional schematic view of the PCB developer solution filtering device provided by the embodiment of the application is provided.

[0031] Figure 3 A conveying mechanism three-dimensional structure schematic view of the PCB developer solution filtering device provided by the embodiment of the application is provided.

[0032] Figure 4 A separation mechanism and water replenishing mechanism sectional structure schematic view of the PCB developer solution filtering device provided by the embodiment of the application is provided.

[0033] Figure 5 A sealing cover plate, bearing bracket, assembly mounting ring, filter plate and filter cloth bag connecting structure three-dimensional schematic view of the PCB developer solution filtering device provided by the embodiment of the application is provided.

[0034] Figure 6 A driving motor II and rotating shaft connecting structure three-dimensional schematic view of the PCB developer solution filtering device provided by the embodiment of the application is provided.

[0035] Figure 7 A separation structure three-dimensional schematic view of the adsorption mechanism of the PCB developer solution filtering device provided by the embodiment of the application is provided.

[0036] Figure 8 The internal structure diagram of the water supplement mechanism of the PCB developing solution filtering device is provided in the embodiments of the present application.

[0037] Reference signs:

[0038] 1, base plate; 2, support pipe; 3, fluid control valve; 4, external connecting pipe; 5, conveying pump I; 6, conveying pipe I; 7, structure support; 8, filter cylinder; 9, sealing cover plate; 10, bearing bracket; 11, assembly mounting ring; 12, filter filter plate; 13, filter cloth bag; 14, fastening clasp; 15, driving motor I; 16, cleaning scraping strip; 17, mounting fixing frame; 18, material separation barrel; 19, conveying pipe II; 20, isolation filter screen barrel; 21, curved pipe; 22, rotating shaft; 23, centrifugal separation disc; 24, driving motor II; 25, power transmission shaft; 26, driving bevel gear; 27, driven bevel gear; 28, conveying pipe III; 29, conveying pump II; 30, filter box; 31, liquid discharge pipe; 32, top cover plate; 33, activated carbon filter plate; 34, conveying pipe IV; 35, conveying pump III; 36, heat exchange box; 37, water inlet pipe; 38, water outlet pipe; 39, conveying pump IV; 40, water conveying pipe; 41, shunt pipe; 42, heat exchange spiral coil pipe; 43, confluence pipe; 44, conveying pipe V; 45, mounting protective cover; 46, one-way flow valve. DETAILED DESCRIPTION

[0039] The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0040] In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection", "installation" should be understood in a broad sense, for example, "connection" can be detachable connection, or can be non-detachable connection; can be direct connection, or can be indirect connection through intermediate medium. In addition, "communication" can be direct communication, or can be indirect communication through intermediate medium. Among them, "fixing" means connecting with each other and the relative position relationship after connection does not change. The orientation language mentioned in the embodiments of the present application, such as "inner", "outer", "top", "bottom", etc., is only the direction of the drawing, therefore, the orientation language used is to better, more clearly illustrate and understand the embodiments of the present application, and is not to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the embodiments of the present application.

[0041] In one embodiment: refer to Figures 1-8The utility model provides a filter device, including feed mechanism and separation mechanism, in separation mechanism, fixed mounting filter cylinder body 8 on structure support 7, set up filter assembly in filter cylinder body 8, filter assembly is constituted by the sealing seal plate 9 of screw connection at filter cylinder body 8 bottom opening, the fixed bearing bracket 10 of sealing seal plate 9 top, the fixed fastening snap ring 14 of bearing bracket 10 in filter cylinder body 8, bearing bracket 10 top extends to fastening snap ring 14 and is clamped with its inner wall, fixed filter filter plate 12 in assembly mounting ring 11, fixed filter cloth bag 13 at bottom, when installing assembly mounting ring 11 in bearing bracket 10, then bearing bracket 10 is installed to filter cylinder body 8, the developer of entering filter cylinder body 8 can pass through two stage filtration of filter filter plate 12 and filter cloth bag 13, filter the large particle impurities in developing solution, two stage filtration can avoid filter filter plate 12 and filter cloth bag 13 block, guarantee the normal flow of developing solution, fixed drive motor I 15 at filter cylinder body 8 top, its output shaft extends to filter cylinder body 8 and fixed cleaning scraper strip 16, cleaning scraper strip 16 and filter filter plate 12 top contact, start drive motor I 15 and drive cleaning scraper strip 16 rotation, can scrape the impurities adhered on filter filter plate 12 when filter filter plate 12 filters developing solution, prevent the impurities block filter filter plate 12 and affect the flow of developing solution.

[0042] As Figure 4As shown, the separation mechanism further comprises a mounting bracket 17 arranged on one side of the structural support 7, and a dehydration assembly arranged on the mounting bracket 17. A material separation barrel 18 of the dehydration assembly is fixed on the mounting bracket 17, and a conveying pipe II 19 is fixed through an inner wall on one side of the material separation barrel 18. One end of the conveying pipe II 19 extends into the filter cylinder 8 and is fixedly connected with an inner wall on one side of the bottom of the filter cylinder 8, and the other end is fixed in a separation filter screen barrel 20 in the material separation barrel 18. One end of the separation filter screen barrel 20 is fixed with a curved pipe 21, and the other end of the curved pipe 21 extends below the material separation barrel 18 and is connected with the adsorption mechanism. A separation member is arranged in the separation filter screen barrel 20, and a rotating shaft 22 of the separation member is rotatably connected in the separation filter screen barrel 20. A plurality of centrifugal separation discs 23 are fixedly sleeved on the rotating shaft 22 at equal intervals. A driving motor II 24 is fixed below the material separation barrel 18 on the mounting bracket 17, and a power transmission shaft 25 is fixed on an output shaft of the driving motor II 24. The top end of the power transmission shaft 25 extends into the separation filter screen barrel 20 and is fixed with a driving bevel gear 26. A driven bevel gear 27 is fixedly sleeved on the rotating shaft 22, and the driving bevel gear 26 is engaged with the driven bevel gear 27. The developer after preliminary filtration is conveyed into the separation filter screen barrel 20 through the conveying pipe II 19. The driving motor II 24 is started to drive the power transmission shaft 25 to rotate, and the driving bevel gear 26 and the driven bevel gear 27 are engaged to drive the rotating shaft 22 and the plurality of centrifugal separation discs 23 to rotate, so as to centrifugally dehydrate the developer and reduce the water content. A conveying pump III 35 is arranged on one side of the material separation barrel 18, and a conveying pipe IV 34 is fixed to the suction end of the conveying pump III 35. The top end of the conveying pipe IV 34 extends into the material separation barrel 18 and is fixedly connected with an inner wall on one side of the bottom of the material separation barrel 18. The conveying pump III 35 is started to discharge the water in the material separation barrel 18, so as to avoid water accumulation in the material separation barrel 18.

[0043] As shown in the drawings, Figure 7 The adsorption mechanism is arranged on one side of the mounting bracket 17, and comprises a conveying pump II 29 and a filter box 30 arranged on one side of the conveying pump II 29. The suction end of the conveying pump II 29 is fixed with a conveying pipe III 28, the top end of the conveying pipe III 28 is fixedly connected with the bottom end of the curved pipe 21, and the discharge end extends into the filter box 30 and is fixedly connected with an inner wall on one side of the filter box 30. A liquid discharge pipe 31 is fixedly connected with an inner wall on the other side of the filter box 30, and one end of the liquid discharge pipe 31 extends to the outside of the filter box 30. A top cover plate 32 is tightly clamped at the opening of the top of the filter box 30, a plurality of activated carbon filter plates 33 are fixedly arranged on the bottom of the top cover plate 32 at equal intervals, and the bottom of the activated carbon filter plate 33 extends into the filter box 30 and is in contact with the inner wall of the filter box 30. The conveying pump II 29 is started to suck and convey the developer after dehydration in the curved pipe 21 into the filter box 30, and the developer is adsorbed and filtered by the plurality of activated carbon filter plates 33 to adsorb the dissolved photoresist residues. The developer after adsorption is discharged and collected through the top cover plate 32, and the pH value is tested. The developer is adjusted according to the test value.

[0044] The present application can be used in the field of developing solution processing technology, and can also be used in other fields applicable to the present application.

[0045] In another embodiment: reference Figure 3 and Figure 8 On the basis of the above-mentioned embodiments, improvements are made: a PCB developing solution filtering device is applied to the field of developing solution processing technology. A water replenishing mechanism is installed at the top of the mounting bracket 17, and a heat exchange box 36 is fixed at the top of the mounting bracket 17. One side of the heat exchange box 36 is fixed with an inlet water pipe 37, and the other side is fixed with an outlet water pipe 38, which are used to connect with the water heating pipe respectively. A delivery pump IV 39 is fixed outside the heat exchange box 36. The suction end of the delivery pump IV 39 is fixed with a water delivery pipe 40, and the output shaft extends into the heat exchange box 36 and is installed with a heat exchange assembly. One end of the heat exchange assembly extends into the filter cylinder 8 and is fixedly connected with the inner wall of one side of the top of the filter cylinder 8. The shunt pipe 41 of the heat exchange assembly is fixed in the heat exchange box 36. The output end of the delivery pump IV 39 extends into the shunt pipe 41 and is fixedly connected with the inner wall of one side of the shunt pipe 41. A plurality of heat exchange spiral coils 42 are fixed at equal intervals on the inner wall of the other side of the shunt pipe 41. The confluence pipe 43 is also fixed in the heat exchange box 36. One end of the heat exchange spiral coil 42 extends into the confluence pipe 43 and is fixedly connected with the inner wall of the bottom of the confluence pipe 43. The delivery pipe V 44 is fixed on the top inner wall of the confluence pipe 43. The bottom end of the delivery pipe V 44 extends above the filter cylinder 8 and is fixedly installed with a protective cover 45. The protective cover 45 penetrates through the inner wall of one side of the top of the filter cylinder 8 and is fixedly connected with the inner wall of one side of the top of the filter cylinder 8. The one-way flow valve 46 is fixed in the delivery pipe V 44. Water is delivered through the water delivery pipe 40. The delivery pump IV 39 is started to deliver water to the shunt pipe 41 and disperse into the plurality of heat exchange spiral coils 42. Hot water is delivered to the heat exchange box 36 through the inlet water pipe 37 to heat the heat exchange spiral coils 42, so that the water temperature in the heat exchange spiral coils 42 is 1-2℃ higher than that of the developing solution. When the water passes through the heat exchange spiral coils 42, it is heated. The heated water is delivered to the delivery pipe V 44 through the confluence pipe 43 and the delivery pipe V 44. The water pressure moves the valve core of the one-way flow valve 46, and the valve body is in an open state. The hot water is delivered to the filter cylinder 8 to dilute the developing solution and improve the flowability of the developing solution. When the water amount reaches the required amount, the delivery pump IV 39 is stopped, the valve core of the one-way flow valve 46 is reset, the valve body is in a closed state, and the delivery of hot water to the filter cylinder 8 is immediately stopped.

[0046] As Figure 3As shown, in the material feeding mechanism, the base bottom plate 1 has a support tube 2 fixed on the top thereof, a plurality of fluid control valves 3 are fixed on the inner wall of the support tube 2 at equal intervals, and the fluid control valves 3 extend to the outside of the support tube 2 and are fixed with an external connecting tube 4. A conveying pump I 5 is fixed on the top of the base bottom plate 1, the suction end of the conveying pump I 5 extends into the support tube 2 and is fixed with the other inner wall of the support tube 2, and the output end of the conveying pump I 5 is fixed with a conveying tube I 6, one end of the conveying tube I 6 extends into the filter cylinder 8 and is fixed with the inner wall of the top of the filter cylinder 8. The external connecting tube 4 is connected with an external conveying developer pipe, the corresponding fluid control valve 3 is opened, and the conveying pump I 5 is started to suck the developer into the support tube 2, and then the developer is conveyed into the filter cylinder 8 through the conveying pump I 5 and the conveying tube I 6, and the developer is preliminarily removed and filtered by the filter assembly.

[0047] However, as known to those skilled in the art, the working principles and wiring methods of the conveying pump I 5, the driving motor I 15, the driving motor II 24, the conveying pump III 35 and the conveying pump IV 39 are conventional means or common knowledge, which will not be described here, and those skilled in the art can make any selection or arrangement according to their needs or convenience.

[0048] The drawings in the specification of the present application are only schematic in nature and the sizes and shapes of the components shown therein are not actual limits but only a schematic representation. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0049] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application; the embodiments of the present application and the features in the embodiments can be combined with each other without conflict. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A PCB developer filtration device, characterized in that, include: Material conveying mechanism; The separation mechanism includes a structural support (7), on which a filter cylinder (8) is fixedly installed. The filter cylinder (8) is provided with a filter assembly for preliminary filtration of the developer to remove particulate impurities. The mounting bracket (17) is set on one side of the structural support (7). The mounting bracket (17) is equipped with a dehydration component. One end of the dehydration component is connected to the bottom of one side of the filter cylinder (8) through the conveying pipe II (19). It is used to receive the developer after preliminary filtration and centrifuge it to reduce the water content. An adsorption mechanism is provided on one side of the mounting bracket (17). The adsorption mechanism is connected to the output end of the dehydration component through a bent pipe (21) and is used to receive the dehydrated developer and remove soluble photoresist residues by adsorption with activated carbon. A water replenishment mechanism is installed on the top of the mounting bracket (17). The water replenishment mechanism is connected to the top side of the filter cylinder (8) through the delivery pipe V (44) and is used to inject hot water into the filter cylinder (8) to dilute the developer and improve its fluidity.

2. The PCB developer filtration device according to claim 1, characterized in that, The material conveying mechanism includes a base plate (1), a support pipe (2) is fixedly installed on the top of the base plate (1), a plurality of fluid control valves (3) are installed at equal intervals on one side wall of the support pipe (2), an external connecting pipe (4) for connecting to an external pipeline is fixedly installed at one end of the fluid control valve (3), a conveying pump I (5) is also fixedly installed on the top of the base plate (1), the suction end of the conveying pump I (5) is connected to the inside of the support pipe (2), and the output end of the conveying pump I (5) is connected to the top of the filter cylinder (8) through the conveying pipe I (6).

3. The PCB developer filtration device according to claim 1, characterized in that, The filter assembly includes a sealing plate (9) detachably installed at the bottom opening of the filter cylinder (8), a support bracket (10) fixedly installed at the top of the sealing plate (9), an assembly ring (11) is fitted inside the support bracket (10), a filter plate (12) is fixedly installed inside the assembly ring (11), a filter cloth bag (13) is fixedly installed at the bottom of the assembly ring (11), and a fastening ring (14) for clamping and fixing the support bracket (10) is fixed inside the filter cylinder (8).

4. The PCB developer filtration device according to claim 3, characterized in that, A drive motor I (15) is fixedly installed on the top of the filter cylinder (8). The output shaft of the drive motor I (15) extends into the filter cylinder (8) and a cleaning scraper (16) is fixedly installed therein, which contacts the top of the filter plate (12).

5. The PCB developer filtration device according to claim 1, characterized in that, The dehydration assembly includes a material separation tank (18) fixedly installed on the mounting bracket (17). The material separation tank (18) contains an isolation filter tank (20). One end of the conveying pipe II (19) is connected to the filter cylinder (8), and the other end is connected to the isolation filter tank (20). A rotating shaft (22) is rotatably connected inside the isolation filter tank (20). Multiple centrifugal separation discs (23) are fixedly mounted on the rotating shaft (22) at equal intervals. A drive motor II (24) is fixedly installed on the mounting bracket (17). The output shaft of the drive motor II (24) drives the rotating shaft (22) to rotate through a power transmission shaft (25) and a meshing active bevel gear (26) and driven bevel gear (27).

6. The PCB developer filtration device according to claim 5, characterized in that, It also includes a transfer pump Ⅲ (35), the suction end of which is connected to the bottom of the material separation tank (18) through a transfer pipe Ⅳ (34) for discharging the water separated during the dehydration process.

7. The PCB developer filtration device according to claim 5, characterized in that, The adsorption mechanism includes a delivery pump II (29) and a filter box (30). The suction end of the delivery pump II (29) is connected to the curved pipe (21) through the delivery pipe III (28), and its discharge end is connected to the inside of the filter box (30).

8. The PCB developer filtration device according to claim 7, characterized in that, The top of the filter box (30) is detachably fitted with a top cover plate (32), and a plurality of activated carbon filter plates (33) extending into the filter box (30) are fixedly fitted at the bottom of the top cover plate (32). A liquid discharge pipe (31) is provided on the other side wall of the filter box (30).

9. The PCB developer filtration device according to claim 1, characterized in that, The water replenishment mechanism includes a heat exchange box (36) fixedly installed on the top of the mounting bracket (17). The heat exchange box (36) is provided with an inlet pipe (37) and an outlet pipe (38) on both sides. A delivery pump IV (39) is fixed on the outside of the heat exchange box (36). The suction end of the delivery pump IV (39) is connected to a water delivery pipe (40), and its output end is connected to a heat exchange component located inside the heat exchange box (36). The output end of the heat exchange component is connected to the filter cylinder (8) through a delivery pipe V (44). A one-way flow valve (46) is provided on the delivery pipe V (44).

10. The PCB developer filtration device according to claim 9, characterized in that, The heat exchange assembly includes a diversion pipe (41), multiple heat exchange spiral coils (42), and a manifold pipe (43). The output end of the delivery pump IV (39) is connected to the diversion pipe (41), the input end of the heat exchange spiral coil (42) is connected to the diversion pipe (41), and the output end is connected to the manifold pipe (43). The delivery pipe V (44) is connected to the manifold pipe (43).

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