Air circulation device for plate drying machine

Abstract

The present application provides an air circulation device for a plate drying machine, which relates to the field of circuit board manufacturing and includes: a washing chamber, wherein four support frames are fixedly connected to the bottom of the washing chamber, and an outer wall of one side of the washing chamber is provided with an air inlet and a water supply pipe; an air outlet pipe, wherein the air outlet pipe is provided at the top of the washing chamber, and a fan body is provided at the output end of the air outlet pipe, and the fan body is provided at the top of the washing chamber, and a circulation pipe is provided on the fan body. The present application realizes the cleaning of the oil film on the water surface. The light initiator in the exhaust gas of the PCB substrate drying furnace contacts with water to form an oil film layer. At this time, the oil film cleaning unit can adsorb it through the continuous operation of the lipophilic and hydrophobic belt, and remove the oil film from the inside of the washing chamber as it runs, so that the device can clean the oil film generated inside the washing chamber in real time, and avoid the oil film from increasing and covering the water surface, thereby ensuring the cleaning effect and cleaning efficiency of the light initiator during the air circulation process when the PCB substrate is dried.

Description

Technical Field

[0001] The present invention relates to the field of circuit board manufacturing, and in particular to an air circulation device for a board drying machine. Background Art

[0002] The main materials of PCB substrates include copper clad laminates, prepregs, and copper foil. Among them, copper clad laminates are the core material of PCB substrates. They are composed of an insulating substrate and copper foil. The insulating substrate can be paper, glass cloth, or composite materials, while the copper foil is used to form the circuit.

[0003] A wet scrubber is an air pollution control device widely used in industrial waste gas treatment. Its core principle is to use a liquid (usually water, sometimes with added chemicals) in direct contact with polluted gases. Through physical or chemical reactions, pollutants (particulate matter and / or gaseous pollutants) are transferred from the gas into the liquid, thereby purifying the gas.

[0004] Existing PCB substrates undergo air circulation during manufacturing and drying. During the circulation process, the photoinitiator generated in the drying furnace needs to be removed through a wet scrubber. However, after the gas containing the photoinitiator enters the wet scrubber, the photoinitiator comes into contact with water and may form an oil film layer on the water surface. As the oil film layer increases, the cleaning efficiency and cleaning effect of the device will be reduced, resulting in an adverse effect on the air circulation, thereby increasing the energy consumption of the equipment operation.

[0005] Therefore, we have made improvements to this and proposed an air circulation device for a plate drying machine. Summary of the Invention

[0006] The purpose of the present invention is to address the current problem that when gas containing photoinitiator enters the interior of a wet scrubber, the photoinitiator may form an oil film layer on the water surface when it comes into contact with water, and as the oil film layer increases, the cleaning efficiency and cleaning effect of the device will be reduced.

[0007] In order to achieve the above-mentioned purpose of the invention, the present invention provides an air circulation device for a plate drying machine to improve the above-mentioned problem.

[0008] The specific application is as follows:

[0009] include:

[0010] The washing chamber has four support frames fixedly connected to the bottom of the washing chamber, and an air inlet and a water supply pipe are provided on one side of the outer wall of the washing chamber;

[0011] An air outlet pipe is provided at the top of the washing bin, a fan body is provided at the output end of the air outlet pipe, the fan body is provided at the top of the washing bin, and a circulation pipe is provided on the fan body;

[0012] Overflow balance tank, the overflow balance tank is arranged on one side outer wall of the washing bin;

[0013] An air guide plate is provided on the inner wall of the washing chamber, a path plate frame and a path guide plate are fixedly connected to the inner wall of the washing chamber, and a gas-liquid mixing area is formed between the path plate frame and the path guide plate;

[0014] An air inlet baffle is provided on the inner wall of the washing chamber and is located below the path plate frame;

[0015] An oil film cleaning unit is provided on the washing tank and is used to clean the oil film formed on the water surface;

[0016] The pre-condensation module is arranged on the air inlet pipe, and is used to pre-condense the gas containing the photoinitiator and remove part of the photoinitiator in advance.

[0017] As a preferred technical solution of this application, the oil film cleaning unit includes:

[0018] The cleaning chamber is arranged on one side outer wall of the washing chamber, and both sides of the outer wall of the cleaning chamber are provided with installation openings. One side outer wall of the cleaning chamber is provided with a belt guide chamber, and one end of the belt guide chamber is connected to the interior of the washing chamber;

[0019] The oleophilic and hydrophobic belt is arranged inside the cleaning chamber, the belt guide chamber and the washing chamber, and the outer wall of the oleophilic and hydrophobic belt contacts the inner wall of the belt guide chamber;

[0020] Two water-contacting guide rollers are both arranged on the washing bin, and the two water-contacting guide rollers are both located inside the washing bin, and the outer walls of the two water-contacting guide rollers are in contact with the outer wall of the oleophilic and hydrophobic belt.

[0021] As a preferred technical solution of this application, the oil film cleaning unit also includes:

[0022] Two gear belts, the two gear belts are respectively arranged on both sides of the oleophilic and hydrophobic belt, and the two gear belts pass through the cleaning chamber, the belt guide chamber and the washing chamber, and the oleophilic and hydrophobic belts are provided with a plurality of circular holes;

[0023] Two guide rollers are both arranged on the cleaning chamber, and both are located inside the cleaning chamber. The outer walls of the two guide rollers are in contact with the outer wall of the oleophilic and hydrophobic belt.

[0024] As a preferred technical solution of this application, the oil film cleaning unit also includes:

[0025] Two mounting rods, both of which are arranged on the cleaning chamber, and both of which are located inside the cleaning chamber, and the outer walls of the two mounting rods are fixedly connected to two transmission gears, and the four transmission gears are respectively engaged with the two gear belts;

[0026] A stepper motor is provided on an outer wall of the cleaning chamber, and an output shaft of the stepper motor is connected to one end of one of the mounting rods through a coupling;

[0027] Two linkage wheels are respectively arranged at the other ends of the two mounting rods. Both linkage wheels are arranged outside the cleaning bin, and the same linkage belt is arranged on the two linkage wheels.

[0028] As a preferred technical solution of this application, the oil film cleaning unit also includes:

[0029] Two annular rails, the two annular rails are respectively arranged on the inner walls of the two mounting openings, and a rotating disk is provided on each of the two annular rails. A fixing opening is opened on one outer wall of each rotating disk, and the two rotating disks are respectively arranged on both sides of the oleophilic and hydrophobic belt;

[0030] Two rotating joints are respectively arranged on the inner walls of the two fixed ports. Both rotating joints are provided with annular through pipes, both annular through pipes are arranged inside the cleaning bin, and both annular through pipes are provided with multiple cleaning nozzles.

[0031] As a preferred technical solution of this application, the oil film cleaning unit also includes:

[0032] A fixed bracket is arranged on an outer wall of one side of the cleaning chamber, a cleaning agent chamber is arranged on the fixed bracket, and a cleaning pump pipe is arranged on the cleaning agent chamber;

[0033] A connecting pipe is provided on the cleaning agent bin, and both the output end of the connecting pipe and the output end of the cleaning agent bin are provided with fixed joints, and the two fixed joints are respectively sleeved on the two rotating joints;

[0034] The shaft rod is installed and arranged on the cleaning bin.

[0035] As a preferred technical solution of this application, the oil film cleaning unit also includes:

[0036] A power motor is provided on a fixed bracket, and an output shaft of the power motor is connected to one end of a mounting shaft through a coupling;

[0037] Two driving gears, both of which are arranged on the outer wall of the mounting shaft, and both of which are located outside the cleaning chamber;

[0038] Two gear ring frames are respectively arranged on one side outer wall of the two rotating disks, and the two driving gears are respectively engaged with the two gear ring frames.

[0039] As a preferred technical solution of this application, the oil film cleaning unit also includes:

[0040] The cleaning sewage pipe is arranged at the bottom of the cleaning bin, and a sewage pump pipe is arranged at one end of the cleaning sewage pipe. The cleaning sewage pipe and the sewage pump pipe are used to discharge the waste liquid generated during the oil film cleaning.

[0041] As a preferred technical solution of this application, the pre-condensation module includes:

[0042] The pre-condensing chamber is arranged at the input end of the air inlet pipe, and the top of the pre-condensing chamber is provided with an air inlet pipe;

[0043] The oil tank is arranged at the bottom of the pre-condensing bin, and a guide bucket is fixedly connected to the inner wall of the pre-condensing bin, and the guide bucket is located above the oil tank;

[0044] The water inlet ring pipe is arranged outside the pre-condensing bin, and a plurality of condensing pipes are arranged on the water inlet ring pipe, and the plurality of condensing pipes all pass through the pre-condensing bin. The output ends of the plurality of condensing pipes are provided with the same water outlet ring pipe, and the water outlet ring pipe is arranged outside the pre-condensing bin.

[0045] As a preferred technical solution of this application, the pre-condensation module further includes:

[0046] A gear ring frame is provided on the outer wall of the pre-condensing chamber, and four impact members are provided on the top of the gear ring frame;

[0047] The servo motor is arranged on the pre-condensing chamber, and the output shaft of the servo motor is connected to a gear part through a coupling, and the gear part is meshed with a gear ring frame.

[0048] Compared with the prior art, the present invention has the following beneficial effects:

[0049] In the scheme of this application:

[0050] 1. In order to solve the problem in the prior art that after the gas containing photoinitiator enters the interior of the wet scrubber, the photoinitiator contacts with water and may form an oil film layer on the water surface, and as the oil film layer increases, the cleaning efficiency and cleaning effect of the device will be reduced, resulting in an adverse effect on air circulation, and further increasing the energy consumption of the equipment operation, the present application realizes the cleaning of the oil film on the water surface by setting up an oil film cleaning unit. The photoinitiator in the exhaust gas of the PCB substrate drying furnace contacts with water to form an oil film layer. At this time, the oil film cleaning unit can adsorb it through the continuous operation of the lipophilic and hydrophobic belt, and remove the oil film from the inside of the washing chamber as it runs, so that the device can clean the oil film on the water surface. The oil film generated inside the chamber is cleaned in real time to prevent the oil film from increasing and covering the water surface, thereby ensuring the removal effect and efficiency of the photoinitiator during the air circulation process when the PCB substrate is dried, thereby increasing the use effect of the device, and then ensuring that the gas is in a clean state during air circulation, avoiding increasing the energy consumption of the equipment operation. At the same time, when the oil film is transferred to the outside of the washing chamber and enters the cleaning chamber, the oil film cleaning unit can use the cleaning agent to clean the oil film adsorbed on the lipophilic and hydrophobic bands, preventing the oil film from returning to the inside of the washing chamber and causing oil film obstruction on the water surface. In addition, by removing the oil film, the oil film accumulation and clogging of the equipment can be avoided, further increasing the use effect of the device;

[0051] 2. Through the pre-condensation module, the device can pre-condense the photoinitiator in the gas during air circulation, thereby reducing the photoinitiator content in the gas before the gas enters the washing chamber, and then reducing the amount of oil film generated after the gas contacts with water, so as to further reduce the operating pressure of the oil film cleaning unit, avoid excessive oil film generation and difficulty in cleaning, thereby increasing the use effect of the device. At the same time, after condensation, the device can impact the condensation pipe to cause it to vibrate slightly, so that the oil droplets generated by the contact and condensation of the photoinitiator in the gas with the condensation pipe can quickly fall to the guide bucket below, increasing the pre-condensation efficiency, and the oil droplets generated by the photoinitiator can be collected in a centralized manner through the oil tank for centralized treatment, solving the problem in the prior art that the photoinitiator generates excessive oil film in contact with water, thereby increasing the operating pressure of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 A schematic diagram of the structure of the air circulation device for the plate drying machine provided in this application;

[0053] Figure 2 This is a schematic diagram of the overall structure of the air circulation device for the plate drying machine provided in this application from a bottom view;

[0054] Figure 3 A schematic diagram of the internal structure of the washing chamber of the air circulation device for the plate drying machine provided in this application;

[0055] Figure 4A schematic diagram of the structure of the oil film cleaning unit of the air circulation device for the plate drying machine provided in this application;

[0056] Figure 5 Schematic diagram of the combined structure of the cleaning chamber and the cleaning sewage pipe of the air circulation device for the plate drying machine provided in this application;

[0057] Figure 6 Schematic diagram of the combined structure of the gear belt and transmission gear of the air circulation device for the plate drying machine provided in this application;

[0058] Figure 7 Schematic diagram of the combined structure of the driving gear and rotating disk of the air circulation device for the plate drying machine provided in this application;

[0059] Figure 8 Schematic diagram of the disassembled structure of the fixed joint and the rotating joint of the air circulation device for the plate drying machine provided in this application;

[0060] Figure 9 A schematic diagram of the structure of a pre-condensing module of an air circulation device for a plate drying machine provided in this application;

[0061] Figure 10 This is a schematic diagram of the combined structure of the guide bucket and condensation pipe of the air circulation device for the plate dryer provided in this application.

[0062] Indicated in the figure:

[0063] 1. Support frame; 2. Washing chamber; 3. Pre-condensation module; 301. Oil tank; 302. Pre-condensation chamber; 303. Gear; 304. Servo motor; 305. Gear ring frame; 306. Water outlet pipe; 307. Water inlet pipe; 308. Condensation pipe; 309. Impactor; 310. Guide bucket; 4. Air inlet pipe; 5. Circulation pipe; 6. Fan body; 7. Air outlet pipe; 8. Oil film cleaning unit; 801. Belt guide chamber; 802. Oleophilic and hydrophobic belt; 803. Cleaning chamber; 804. Sewage pump pipe; 805. Cleaning sewage pipe; 806. Driving gear; 807. Fixed bracket; 808. Cleaning agent chamber; 809. Cleaning pump pipe. 810. Connecting pipe; 811. Belt with round hole; 812. Water-contacting guide roller; 813. Annular rail; 814. Mounting rod; 815. Transmission gear; 816. Stepper motor; 817. Gear belt; 818. Guide roller; 819. Linkage belt; 820. Linkage wheel; 821. Annular pipe; 822. Cleaning nozzle; 823. Mounting shaft; 824. Power motor; 825. Rotating disk; 826. Gear ring frame; 827. Fixed joint; 828. Rotating joint; 9. Overflow balance tank; 10. Air guide plate; 11. Path plate frame; 12. Air inlet pipe port; 13. Water supply pipe port; 14. Air inlet baffle; 15. Path guide plate. DETAILED DESCRIPTION

[0064] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0065] As described in the background technology, after the gas containing photoinitiator enters the wet scrubber, the photoinitiator may form an oil film layer on the water surface when it comes into contact with water. As the oil film layer increases, the cleaning efficiency and cleaning effect of the device will be reduced, resulting in an adverse effect on air circulation, thereby increasing the energy consumption of equipment operation.

[0066] In order to solve this technical problem, the present invention provides an air circulation device for a plate dryer, which is applied to the air circulation for drying PCB substrates.

[0067] Specifically, please refer to Figures 1-10 The air circulation device for the plate drying machine specifically includes:

[0068] The washing chamber 2 has four support frames 1 fixedly connected to its bottom, and an air inlet 12 and a water supply 13 are provided on one side of the outer wall of the washing chamber 2;

[0069] The air outlet pipe 7 is provided at the top of the washing chamber 2. The output end of the air outlet pipe 7 is provided with a fan body 6. The fan body 6 is provided at the top of the washing chamber 2. The fan body 6 is provided with a circulation pipe 5.

[0070] Overflow balance tank 9, the overflow balance tank 9 is arranged on one side outer wall of the washing bin 2;

[0071] The air guide plate 10 is arranged on the inner wall of the washing chamber 2. The inner wall of the washing chamber 2 is fixedly connected with a path plate frame 11 and a path guide plate 15. A gas-liquid mixing area is formed between the path plate frame 11 and the path guide plate 15.

[0072] The air inlet baffle 14 is provided on the inner wall of the washing chamber 2 and is located below the path plate frame 11;

[0073] The oil film cleaning unit 8 is provided on the washing tank 2 and is used to clean the oil film formed on the water surface;

[0074] The pre-condensation module 3 is provided on the air inlet 12 and is used for pre-condensing the gas containing the photoinitiator and removing part of the photoinitiator in advance.

[0075] The air circulation device for the plate dryer provided by the present invention realizes the cleaning of the oil film on the water surface. The photoinitiator in the exhaust gas of the PCB substrate drying furnace contacts with water to form an oil film layer. At this time, the oil film cleaning unit 8 can adsorb it through the continuous operation of the lipophilic and hydrophobic belt 802, and remove the oil film from the inside of the washing chamber 2 as it runs, so that the device can clean the oil film generated inside the washing chamber 2 in real time, avoiding the increase of the oil film covering the water surface, thereby ensuring the cleaning effect and efficiency of the photoinitiator during the air circulation process when the PCB substrate is dried.

[0076] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0077] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein may be combined with each other.

[0078] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0079] Example 1, please refer to Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 , an air circulation device for a plate drying machine, wherein the oil film cleaning unit 8 comprises:

[0080] The cleaning chamber 803 is provided on one side outer wall of the washing chamber 2. The outer walls on both sides of the cleaning chamber 803 are provided with mounting openings. A guide chamber 801 is provided on one side outer wall of the cleaning chamber 803. One end of the guide chamber 801 is connected to the interior of the washing chamber 2.

[0081] The oleophilic and hydrophobic belt 802 is arranged inside the cleaning chamber 803, the belt guide chamber 801 and the washing chamber 2, and the outer wall of the oleophilic and hydrophobic belt 802 contacts the inner wall of the belt guide chamber 801;

[0082] Two water-contact guide rollers 812 are both arranged on the washing bin 2 , and both water-contact guide rollers 812 are located inside the washing bin 2 . The outer walls of the two water-contact guide rollers 812 are in contact with the outer wall of the oleophilic and hydrophobic belt 802 .

[0083] Please refer to Figure 4-Figure 8 , an air circulation device for a plate drying machine, wherein the oil film cleaning unit 8 further comprises:

[0084] Two gear belts 817, the two gear belts 817 are respectively arranged on both sides of the oleophilic and hydrophobic belt 802, and the two gear belts 817 pass through the cleaning chamber 803, the belt guide chamber 801 and the washing chamber 2. A plurality of circular holes 811 are opened on the oleophilic and hydrophobic belt 802;

[0085] Two guide rollers 818 are both arranged on the cleaning chamber 803 , and both are located inside the cleaning chamber 803 . The outer walls of the two guide rollers 818 are in contact with the outer wall of the oleophilic and hydrophobic belt 802 .

[0086] Please refer to Figure 4-Figure 8 , an air circulation device for a plate drying machine, wherein the oil film cleaning unit 8 further comprises:

[0087] Two mounting rods 814 are provided on the cleaning chamber 803 and are located inside the cleaning chamber 803. The outer walls of the two mounting rods 814 are fixedly connected to two transmission gears 815. The four transmission gears 815 are respectively engaged with two gear belts 817.

[0088] A stepper motor 816 is provided on an outer wall of the cleaning chamber 803. The output shaft of the stepper motor 816 is connected to one end of one of the mounting rods 814 via a coupling.

[0089] Two linkage wheels 820 are respectively arranged at the other end of the two mounting rods 814, and the two linkage wheels 820 are both arranged outside the cleaning chamber 803. The two linkage wheels 820 are provided with the same linkage belt 819 (the stepping motor 816 drives one of the mounting rods 814 to rotate, and then cooperates with the linkage wheel 820 and the linkage belt 819 to make the two mounting rods 814 rotate synchronously, so that the transmission gear 815 rotates to drive the gear belt 817 and the oleophilic and hydrophobic belt 802 to run).

[0090] Please refer to Figure 4-Figure 8 , an air circulation device for a plate drying machine, wherein the oil film cleaning unit 8 further comprises:

[0091] Two annular rails 813 are respectively provided on the inner walls of the two mounting openings. A rotating disk 825 is provided on each of the two annular rails 813. A fixing opening is provided on one outer wall of each rotating disk 825. The two rotating disks 825 are respectively provided on both sides of the oleophilic and hydrophobic belt 802.

[0092] Two rotating joints 828 are respectively arranged on the inner walls of the two fixed ports. An annular through-tube 821 is provided on each of the two rotating joints 828. Both of the annular through-tubes 821 are arranged inside the cleaning chamber 803. Both of the annular through-tubes 821 are provided with multiple cleaning nozzles 822 (the rotating disk 825 rotates to rotate the rotating joint 828 and the annular through-tube 821, thereby cooperating with the cleaning nozzle 822 to rotate and spray the cleaning agent out).

[0093] Please refer to Figure 4-Figure 8 , an air circulation device for a plate drying machine, wherein the oil film cleaning unit 8 further comprises:

[0094] A fixed bracket 807 is provided on an outer wall of one side of the cleaning chamber 803. A cleaning agent chamber 808 is provided on the fixed bracket 807. A cleaning pump tube 809 is provided on the cleaning agent chamber 808.

[0095] Connecting pipe 810, connecting pipe 810 is provided on cleaning agent bin 808, and the output end of connecting pipe 810 and the output end of cleaning agent bin 808 are both provided with fixed joints 827, and the two fixed joints 827 are respectively sleeved on the two rotating joints 828;

[0096] The shaft rod 823 is installed and set on the cleaning chamber 803 (the cleaning agent is transported to the inside of the cleaning agent chamber 808 through the cleaning pump tube 809, and is transported to the inside of the two rotating joints 828 through the connecting pipe 810 and the fixed joint 827 for cleaning agent transportation).

[0097] Please refer to Figure 4-Figure 8 , an air circulation device for a plate drying machine, wherein the oil film cleaning unit 8 further comprises:

[0098] The power motor 824 is mounted on the fixed bracket 807, and the output shaft of the power motor 824 is connected to one end of the mounting shaft 823 via a coupling;

[0099] Two driving gears 806 , both of which are disposed on the outer wall of the mounting shaft 823 , and both of which are located outside the cleaning chamber 803 ;

[0100] Two gear ring frames 826 are respectively arranged on the outer wall of one side of the two rotating disks 825, and the two driving gears 806 are respectively engaged with the two gear ring frames 826 (the power motor 824 drives the driving gear 806 to rotate, and since the driving gear 806 is engaged with the gear ring frame 826, the gear ring frame 826 and the rotating disk 825 are driven to rotate).

[0101] Please refer to Figure 4-Figure 8, an air circulation device for a plate drying machine, wherein the oil film cleaning unit 8 further comprises:

[0102] The cleaning sewage pipe 805 is arranged at the bottom of the cleaning chamber 803. A sewage pump pipe 804 is provided at one end of the cleaning sewage pipe 805. The cleaning sewage pipe 805 and the sewage pump pipe 804 are used to discharge the waste liquid generated during the oil film cleaning.

[0103] The oil film cleaning unit 8 cleans the oil film on the water surface, ensuring the cleaning effect and efficiency of the photoinitiator during the air circulation process when the PCB substrate is dried, thereby increasing the use effect of the device, and then ensuring that the gas is in a clean state during air circulation, avoiding increasing the energy consumption of equipment operation. At the same time, when the oil film is transferred to the outside of the washing tank 2 and enters the cleaning tank 803, the oil film cleaning unit 8 can use the cleaning agent to clean the oil film adsorbed on the lipophilic and hydrophobic belt 802, avoiding the oil film from returning to the inside of the washing tank 2 and causing oil film obstruction on the water surface, and by removing the oil film, it can avoid the accumulation of oil film and clogging of the equipment, further increasing the use effect of the device.

[0104] Example 2 further optimizes the air circulation device for the plate drying machine provided in Example 1. Specifically, Figure 1 、 Figure 9 and Figure 10 As shown, the pre-condensation module 3 includes:

[0105] The pre-condensation chamber 302 is provided at the input end of the air inlet 12, and an air inlet pipe 4 is provided at the top of the pre-condensation chamber 302;

[0106] The oil tank 301 is arranged at the bottom of the pre-condensation chamber 302. The inner wall of the pre-condensation chamber 302 is fixedly connected with a guide bucket 310. The guide bucket 310 is located above the oil tank 301.

[0107] The water inlet ring pipe 307 is arranged outside the pre-condensation chamber 302, and multiple condensation pipe fittings 308 are arranged on the water inlet ring pipe 307. The multiple condensation pipe fittings 308 all pass through the pre-condensation chamber 302. The output ends of the multiple condensation pipe fittings 308 are provided with the same water outlet ring pipe 306, and the water outlet ring pipe 306 is arranged outside the pre-condensation chamber 302 (the condensed water enters through the water inlet ring pipe 307 and is transported to the inside of the multiple condensation pipe fittings 308, and then the condensed water is discharged through the water outlet ring pipe 306 to perform a condensation cycle).

[0108] Further, such as Figure 9 and Figure 10 As shown, the pre-condensation module 3 also includes:

[0109] The gear ring frame 305 is provided on the outer wall of the pre-condensation chamber 302 , and four impact members 309 are provided on the top of the gear ring frame 305 ;

[0110] The servo motor 304 is provided on the pre-condensing chamber 302 . The output shaft of the servo motor 304 is connected to the gear member 303 via a coupling. The gear member 303 is engaged with the gear ring frame 305 (the servo motor 304 drives the gear member 303 to rotate, thereby causing the gear ring frame 305 and the impact member 309 to rotate).

[0111] The pre-condensation module 3 can pre-condense the photoinitiator in the gas, thereby reducing the photoinitiator content in the gas before the gas enters the washing chamber 2, and then reducing the amount of oil film generated after the gas contacts water, so as to further reduce the operating pressure of the oil film cleaning unit 8, avoid excessive oil film generation and difficulty in cleaning, thereby increasing the use effect of the device. At the same time, after condensation, the device can impact the condensation pipe 308 to cause it to vibrate slightly, so that the oil droplets generated by the contact and condensation of the photoinitiator in the gas with the condensation pipe 308 can quickly fall to the guide bucket 310 below, increasing the pre-condensation efficiency, and the oil droplets generated by the photoinitiator can be collected centrally through the oil tank 301 for centralized treatment.

[0112] The use process of the air circulation device for the plate drying machine provided by the present invention is as follows:

[0113] During air circulation, gas enters the air inlet pipe 4 from the inside of the PCB substrate drying furnace, and then enters the inside of the pre-condensation chamber 302. At this time, condensed water enters through the water inlet ring pipe 307 and is transported to the inside of multiple condensation pipes 308. The condensed water is then discharged through the water outlet ring pipe 306 to perform a condensation cycle. During this process, the gas contacts the condensation pipe 308, causing part of the light initiator therein to condense into oil droplets in advance. At the same time, the servo motor 304 drives the gear part 303 to rotate, thereby causing the gear ring frame 305 and the impact part 309 to rotate, so that the impact part 309 contacts and collides with the condensation pipe 308, thereby causing it to vibrate slightly, so that the oil droplets fall into the guide bucket 310 and further fall into the oil tank 301.

[0114] Afterwards, the gas enters the washing chamber 2 through the air inlet 12 and comes into contact with water, causing the remaining light initiator to condense and fall onto the water surface to form an oil film.

[0115] When the oil film is cleaned, the stepper motor 816 is running, and the stepper motor 816 drives one of the mounting rods 814 to rotate, and then cooperates with the linkage wheel 820 and the linkage belt 819 to make the two mounting rods 814 rotate synchronously, so that the transmission gear 815 rotates to drive the gear belt 817 and the oleophilic and hydrophobic belt 802 to run. As the oleophilic and hydrophobic belt 802 runs, it will absorb the oil film on the water surface, and as it runs, the absorbed oil film moves to the inside of the cleaning chamber 803. At this time, the cleaning agent is transported to the inside of the cleaning agent chamber 808 through the cleaning pump pipe 809, and is transported to the two rotating joints 8 through the connecting pipe 810 and the fixed joint 827. 28, and is further transported to the inside of the two annular through-pipes 821 through the rotating joint 828, and is sprayed out through the cleaning nozzle 822. At the same time, during cleaning, the power motor 824 is running, and the power motor 824 drives the mounting shaft 823 to rotate, and further rotates the two driving gears 806. Since the driving gears 806 are engaged with the gear ring frame 826, the gear ring frame 826 can be rotated, thereby driving the rotating disk 825, the rotating joint 828, the annular through-pipe 821 and the cleaning nozzle 822 to rotate, so as to spray the cleaning agent on the lipophilic and hydrophobic belt 802, thereby cleaning the oil film;

[0116] After cleaning, the oleophilic and hydrophobic belt 802 continues to operate and is transported back to the washing chamber 2 to continue absorbing the oil film for real-time cleaning. The waste liquid generated by cleaning the oil film will flow into the cleaning sewage pipe 805. At this time, the waste liquid can be discharged through the sewage pump pipe 804 to complete the oil film treatment process.

[0117] After washing, the clean air enters the interior of the fan body 6 through the air outlet pipe 7, and is transported back to the interior of the PCB substrate drying furnace through the fan body 6 and the circulation pipe 5 to save energy.

[0118] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0119] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the present invention specification and drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. An air circulation device for a plate drying machine, characterized in that: include: A washing chamber (2), wherein four support frames (1) are fixedly connected to the bottom of the washing chamber (2), and an air inlet pipe opening (12) and a water supply pipe opening (13) are provided on an outer wall of one side of the washing chamber (2); An air outlet pipe (7), the air outlet pipe (7) is arranged at the top of the washing chamber (2), a fan body (6) is arranged at the output end of the air outlet pipe (7), the fan body (6) is arranged at the top of the washing chamber (2), and a circulation pipe (5) is arranged on the fan body (6); An overflow balancing tank (9), the overflow balancing tank (9) is arranged on one side outer wall of the washing bin (2); An air guide plate (10), the air guide plate (10) being arranged on the inner wall of the washing chamber (2), the inner wall of the washing chamber (2) being fixedly connected with a path plate frame (11) and a path guide plate (15), a gas-liquid mixing zone being formed between the path plate frame (11) and the path guide plate (15); An air inlet baffle (14), the air inlet baffle (14) being arranged on the inner wall of the washing chamber (2), the air inlet baffle (14) being located below the path plate frame (11); An oil film cleaning unit (8), the oil film cleaning unit (8) is arranged on the washing bin (2), and the oil film cleaning unit (8) is used to clean the oil film formed on the water surface; A pre-condensation module (3), the pre-condensation module (3) is arranged on the air inlet (12), and the pre-condensation module (3) is used to pre-condense the gas containing the light initiator and remove part of the light initiator in advance; The oil film cleaning unit (8) comprises: A cleaning chamber (803), the cleaning chamber (803) is arranged on one side outer wall of the washing chamber (2), and both sides of the outer wall of the cleaning chamber (803) are provided with mounting openings. A guide chamber (801) is provided on one side outer wall of the cleaning chamber (803), and one end of the guide chamber (801) is connected to the interior of the washing chamber (2); An oleophilic and hydrophobic belt (802), the oleophilic and hydrophobic belt (802) being arranged inside the cleaning chamber (803), the belt guide chamber (801) and the washing chamber (2), wherein the outer wall of the oleophilic and hydrophobic belt (802) is in contact with the inner wall of the belt guide chamber (801); Two water-contact guide rollers (812), both of which are arranged on the washing chamber (2), both of which are located inside the washing chamber (2), and the outer walls of the two water-contact guide rollers (812) are in contact with the outer wall of the oleophilic and hydrophobic belt (802); Two gear belts (817), the two gear belts (817) are respectively arranged on both sides of the oleophilic and hydrophobic belt (802), and the two gear belts (817) pass through the cleaning chamber (803), the belt guide chamber (801) and the washing chamber (2), and the oleophilic and hydrophobic belt (802) is provided with a plurality of circular holes (811).

2. The air circulation device for a plate drying machine according to claim 1, characterized in that: The oil film cleaning unit (8) further comprises: Two guide rollers (818), both of which are arranged on the cleaning chamber (803), both of which are located inside the cleaning chamber (803), and the outer walls of the two guide rollers (818) are in contact with the outer wall of the oleophilic and hydrophobic belt (802).

3. The air circulation device for a plate drying machine according to claim 2, characterized in that: The oil film cleaning unit (8) further comprises: Two mounting rods (814), both mounting rods (814) are arranged on the cleaning chamber (803), both mounting rods (814) are located inside the cleaning chamber (803), and the outer walls of the two mounting rods (814) are fixedly connected to two transmission gears (815), and the four transmission gears (815) are respectively engaged with two gear belts (817); A stepper motor (816), the stepper motor (816) is arranged on an outer wall of one side of the cleaning chamber (803), and the output shaft of the stepper motor (816) is connected to one end of one of the mounting rods (814) via a coupling; Two linkage wheels (820) are respectively arranged at the other ends of the two mounting rods (814). The two linkage wheels (820) are both arranged outside the cleaning chamber (803). The two linkage wheels (820) are provided with a same linkage belt (819).

4. The air circulation device for a plate drying machine according to claim 3, characterized in that: The oil film cleaning unit (8) further comprises: Two annular rails (813), the two annular rails (813) are respectively arranged on the inner walls of the two installation openings, and a rotating disk (825) is provided on each of the two annular rails (813), and a fixing opening is opened on one side of the outer wall of each of the two rotating disks (825), and the two rotating disks (825) are respectively arranged on both sides of the oleophilic and hydrophobic belt (802); Two rotating joints (828) are respectively arranged on the inner walls of the two fixed ports. An annular through pipe (821) is provided on each of the two rotating joints (828). Both annular through pipes (821) are arranged inside the cleaning chamber (803). Both annular through pipes (821) are provided with a plurality of cleaning nozzles (822).

5. The air circulation device for a plate drying machine according to claim 4, characterized in that: The oil film cleaning unit (8) further comprises: A fixed bracket (807), the fixed bracket (807) is arranged on an outer wall of one side of the cleaning chamber (803), a cleaning agent chamber (808) is arranged on the fixed bracket (807), and a cleaning pump tube (809) is arranged on the cleaning agent chamber (808); A connecting pipe (810), the connecting pipe (810) is provided on the cleaning agent bin (808), the output end of the connecting pipe (810) and the output end of the cleaning agent bin (808) are both provided with fixed joints (827), and the two fixed joints (827) are respectively sleeved on the two rotating joints (828); The shaft rod (823) is installed and disposed on the cleaning chamber (803).

6. The air circulation device for a plate drying machine according to claim 5, characterized in that: The oil film cleaning unit (8) further comprises: A power motor (824), the power motor (824) is arranged on the fixed bracket (807), and the output shaft of the power motor (824) is connected to one end of the mounting shaft (823) through a coupling; Two driving gears (806), both of which are arranged on the outer wall of the mounting shaft (823), and both of which are located outside the cleaning chamber (803); Two gear ring frames (826) are respectively arranged on one side outer wall of the two rotating disks (825), and the two driving gears (806) are respectively engaged with the two gear ring frames (826).

7. The air circulation device for a plate drying machine according to claim 1, characterized in that: The oil film cleaning unit (8) further comprises: The cleaning sewage pipe (805) is arranged at the bottom of the cleaning chamber (803), and a sewage pump pipe (804) is provided at one end of the cleaning sewage pipe (805). The cleaning sewage pipe (805) and the sewage pump pipe (804) are used to discharge waste liquid generated during oil film cleaning.

8. The air circulation device for a plate drying machine according to claim 1, characterized in that: The pre-condensation module (3) comprises: A pre-condensation chamber (302), the pre-condensation chamber (302) is arranged at the input end of the air inlet pipe (12), and an air inlet pipe (4) is arranged at the top of the pre-condensation chamber (302); An oil tank (301), the oil tank (301) is arranged at the bottom of the pre-condensation chamber (302), the inner wall of the pre-condensation chamber (302) is fixedly connected with a guide bucket (310), and the guide bucket (310) is located above the oil tank (301); A water inlet ring pipe (307) is provided outside the pre-condensation chamber (302); a plurality of condensation pipes (308) are provided on the water inlet ring pipe (307); the plurality of condensation pipes (308) all pass through the pre-condensation chamber (302); the output ends of the plurality of condensation pipes (308) are provided with a same water outlet ring pipe (306); the water outlet ring pipe (306) is provided outside the pre-condensation chamber (302).

9. The air circulation device for a plate drying machine according to claim 8, characterized in that: The pre-condensation module (3) further comprises: A gear ring frame (305), the gear ring frame (305) is arranged on the outer wall of the pre-condensation chamber (302), and four impact members (309) are arranged on the top of the gear ring frame (305); A servo motor (304) is provided on the pre-condensing chamber (302); an output shaft of the servo motor (304) is connected to a gear member (303) via a coupling; the gear member (303) is meshed with a gear ring frame (305).

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