A pretreatment device for LCD glass substrate processing

Abstract

The present invention discloses a pretreatment device for LCD glass substrate processing, including a roller conveyor, a cleaning device and a drying device, wherein the cleaning device includes: an isolation cover; a cleaning mechanism, including a spray pipe arranged in the isolation cover, and wind knives are arranged on both sides of the spray pipe inwardly inclined; a water collection and drainage groove, arranged on the lower side of the roller conveyor at the lower side of the isolation cover; a demisting mechanism, including an adsorption cotton roller rotatably installed on the inner side of the wind knife, and the wind knife is respectively provided with a guide groove for squeezing and scraping the adsorption cotton roller; the drying device includes: a drying chamber; an air intake mechanism, including a blower, whose air intake end is connected to a corresponding air distribution pipe, a connecting pipe is rotatably installed in the air distribution pipe, a cylindrical filter core is fixed on the connecting pipe, and the blower impeller and the connecting pipe are respectively connected to the output shaft end of the corresponding drive motor. The present invention can effectively ensure the cleaning effect and drying effect of the LCD glass substrate.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning equipment, and in particular to a pretreatment equipment for processing LCD glass substrates, which is mainly used for cleaning and drying LCD glass substrates. Background Art

[0002] ‌LCD glass substrate‌ is a basic component of liquid crystal display devices. It is a thin glass sheet produced by the float process with an extremely flat surface. It is the core component of liquid crystal display panels and is crucial to the electronic information display industry.

[0003] In the process of preparing liquid crystal display devices, first, the corresponding LCD glass substrate needs to be cleaned and dried by the corresponding LCD glass substrate processing pretreatment equipment. The existing LCD glass substrate processing pretreatment equipment mainly includes a material transmission mechanism, and a cleaning device and a drying device arranged on the material transmission mechanism in sequence. The cleaning device mainly includes an isolation cover arranged on the upper side of the material transmission mechanism, and the LCD glass substrate is rinsed and blown dry by the rinsing mechanism and the wind knife mechanism arranged in the isolation cover in front and back. The LCD glass substrate after drying is then transported to the drying device for drying treatment, thereby completing the pretreatment of the material. During the rinsing process, the washed away stains are easy to remain in the water body, which makes it easy for the stains to re-attach to the surface of the LCD glass substrate. When the wind knife cleans the water body later, some of the stains re-attached to the surface of the LCD glass substrate cannot be removed in time, which leads to the cleaning effect failing to meet the design requirements.

[0004] In actual use, the drying device for the existing LCD glass substrate pretreatment equipment needs to use a corresponding air supply mechanism to transport the heated hot air into the drying chamber, so as to dry the LCD glass substrates that have been transported through the drying chamber. When the hot air continues to enter the drying chamber, it is very easy to carry dust and other stains, which causes the LCD glass substrates that have been cleaned to be re-stained with dust and other stains.

[0005] Therefore, the research purpose of the present invention is to design a pretreatment equipment for LCD glass substrate processing that can effectively prevent the washed-off stains from easily re-attaching to the surface of the LCD glass substrate and can effectively and significantly reduce the probability of dust entering the drying room, thereby effectively ensuring the pretreatment effect of the LCD glass substrate. Summary of the invention

[0006] In view of the technical problems existing in the above-mentioned prior art, the present invention provides a pre-treatment device for processing LCD glass substrates, which can effectively solve the technical problems existing in the above-mentioned prior art.

[0007] The technical solution of the present invention is:

[0008] A pre-treatment device for LCD glass substrate processing, comprising a roller conveyor, a cleaning device and a drying device.

[0009] The cleaning device comprises:

[0010] An isolation cover is arranged at the front side of the roller conveyor;

[0011] The cleaning mechanism comprises a spray pipe arranged in the isolation cover, a plurality of cleaning nozzles with openings facing downwards are arranged side by side on the bottom side of the spray pipe, and corresponding air knives are arranged inwardly and tilted on both sides of the spray pipe, and the air outlets of the air knives face the lower sides of the cleaning nozzles;

[0012] A water collection and drainage trough is provided at the lower side of the roller conveyor at the lower side of the isolation cover, and is used to collect and discharge the waste water generated by cleaning;

[0013] The demisting mechanism comprises an adsorption cotton roller rotatably mounted on the inner side of the wind knife, the adsorption cotton roller is respectively located on the upper side of the air outlet of the corresponding wind knife, the adsorption cotton roller and the corresponding wind knife are arranged at an interval, and the wind knife is respectively provided with a guide groove for squeezing and scraping the adsorption cotton roller, and the two sides of the guide groove are connected and located on the upper side of the water collection and drainage groove;

[0014] The drying device comprises:

[0015] A drying chamber, arranged at the rear side of the roller conveyor;

[0016] The air inlet mechanism comprises a blower fixedly arranged at one side of the drying chamber, the air inlet end of the blower is connected to the corresponding air distribution pipe, one end of the air distribution pipe is closed, and the other end is detachably installed with a corresponding end cover, a corresponding connecting pipe is sealed and rotatably installed in the air distribution pipe, a cylindrical filter element facing the end cover is fixedly connected to the connecting pipe, the air inlet end of the blower is connected to the side of the connecting pipe that is not connected to the cylindrical filter element, the impeller of the blower and the connecting pipe are respectively connected to the output shaft end of the corresponding driving motor; a group of air distribution ducts located on the upper and lower sides of the roller conveyor are arranged on the outside of the drying chamber, the air distribution ducts are respectively connected to the upper and lower sides of the air distribution duct through corresponding guide tubes, and air outlet ducts that penetrate into the drying chamber are arranged at intervals on the air distribution ducts, and the air outlet ends of the air outlet ducts are respectively facing the roller conveyor and fixedly installed with corresponding electric heaters.

[0017] The cleaning device also includes a cleaning and exhausting mechanism, with the middle of the guide groove as a base point, and the two sides of the guide groove are respectively inclined downward, the cleaning and exhausting mechanism includes an air guide plate arranged on the upper side of the guide groove, the air guide plate is arranged in an inverted L shape, the top of the air guide plate is fixedly connected to the wind knife, and corresponding closing plates are fixedly connected between the two sides of the air guide plate and the wind knife, the wind knife is provided with an air vent connected to the area where the air guide plate is located, and a sealing strip for closing the air vent is fixedly installed on the air guide plate.

[0018] A corresponding baffle is movably installed at the air outlet of the wind knife through a corresponding elastic member. When the wind pressure of the wind knife increases to a set value, the baffle is compressed, the elastic member is stretched, and the baffle is driven to seal at the air outlet of the wind knife. The internal pressure of the wind knife increases, and the sealing strip is opened after being compressed. The high-pressure airflow enters the area where the air guide plate is located through the air vent, and the water in the guide groove is cleared and discharged under the guidance of the air guide plate.

[0019] The adsorption cotton roller is driven by a cotton roller driving motor fixedly mounted on the isolation cover; the bottom side of the water collection and drainage trough is externally connected to a drainage pipe equipped with a drainage valve.

[0020] The drying device also includes an exhaust mechanism, including two rows of air ducts connected side by side in height to the side of the drying chamber where the air inlet mechanism is not provided, the air ducts are connected to the corresponding exhaust ducts through corresponding connecting pipes, a corresponding moisture absorption mechanism is detachably installed on the side of the exhaust duct close to the feed end of the drying chamber, and a hot air knife located on the upper side of the feed end of the drying chamber is externally connected to the exhaust duct and the exhaust fan on the side of the exhaust duct close to the feed end of the drying chamber, and the air outlet of the hot air knife is arranged to be tilted downward.

[0021] The moisture absorption mechanism comprises a moisture absorption filter cartridge which is detachably mounted on the exhaust pipe near the feeding end of the drying chamber, and the moisture absorption filter cartridge is filled with a corresponding moisture absorption desiccant.

[0022] The exhaust pipe is detachably connected to a corresponding cover plate on one side close to the feed end of the drying chamber by a threaded connection, and the moisture absorption filter cartridge is detachably connected to the cover plate by a threaded connection; the exhaust pipe is provided with an air guide ridge with an inner pore diameter smaller than that of the moisture absorption filter cartridge, and the inner end of the moisture absorption filter cartridge is closed and abutted against the air guide ridge.

[0023] The air outlet ends of the air outlet pipes are respectively provided with air distribution containers facing the roller conveyor, the air inlet ends of the air distribution containers are connected to the air outlet ends of the air outlet pipes, the air outlet ends of the air distribution containers are arranged in long strips and facing the roller conveyor, and the electric heaters are fixedly installed in the corresponding air distribution containers.

[0024] The cylindrical filter element comprises a cylindrical frame and a plurality of filter plates fixedly mounted on the cylindrical frame, and the cylindrical frame is connected to the connecting pipe by means of flange locking.

[0025] The connecting pipe is rotatably installed in the air distribution pipe through a waterproof bearing seal.

[0026] Advantages of the present invention:

[0027] 1) The cleaning mechanism of the present invention comprises a spray pipe arranged in an isolation cover, and a plurality of cleaning nozzles with openings facing downward are arranged side by side on the bottom side of the spray pipe, and corresponding wind knives are arranged inwardly and tilted on both sides of the spray pipe, and the air outlets of the wind knives face the lower side of the cleaning nozzles. The cleaning water is used to wash the LCD glass substrate downward along the cleaning nozzles. During this process, the inwardly tilted wind knives form wind curtains on both sides of the cleaning water washed onto the LCD glass substrate, so as to isolate the width of the cleaning water washed onto the LCD glass substrate within a smaller range, so that the cleaning water flows into the water collection and drainage groove along both sides of the LCD glass substrate, thereby greatly shortening the residence time of the cleaning water on the LCD glass substrate, so as to prevent the washed-off stains from re-attaching to the surface of the LCD glass substrate, thereby effectively ensuring the cleaning effect.

[0028] 2) Since the wind knife forms a wind curtain on both sides of the cleaning water that is flushed onto the LCD glass substrate, and the cleaning water is also prone to splashing when flushing the LCD glass substrate, even if the width of the cleaning water is isolated within a smaller range, some stains will bounce back to the surface of the LCD glass substrate with the splashed water, causing the stains to reattach to the surface of the LCD glass substrate. To this end, the present invention further adds a demisting mechanism, which includes an adsorption cotton roller rotatably mounted on the inner side of the wind knife, the adsorption cotton roller is respectively located on the upper side of the air outlet of the corresponding wind knife, the adsorption cotton roller is spaced apart from the corresponding wind knife, and the wind knife is respectively provided with a guide groove for squeezing and scraping the adsorption cotton roller, and the two sides of the guide groove are connected and located on the upper side of the water collection and drainage groove. In this way, the splashed cleaning water can be absorbed in time by the rotating adsorption cotton roller, and it can be scraped into the guide groove for external discharge in time, thereby greatly reducing the probability of stains rebounding back to the surface of the LCD glass substrate along with the splashed water, so as to further prevent the washed away stains from re-attaching to the surface of the LCD glass substrate, thereby effectively further ensuring the cleaning effect.

[0029] 3) The cleaning water scraped into the guide groove is prone to be accompanied by stains, which are easy to accumulate in the guide groove. Therefore, the guide groove needs to be cleaned regularly, which is obviously more difficult for the guide groove arranged in the isolation cover. To this end, the present invention is further provided with a cleaning and drainage mechanism, with the middle of the guide groove as the base point, and the two sides of the guide groove are respectively inclined downward, and the cleaning and drainage mechanism includes an air guide plate arranged on the upper side of the guide groove, the air guide plate is arranged in an inverted L shape, the top of the air guide plate is fixedly connected to the wind knife, and the wind knife is provided with an air vent connected to the area where the air guide plate is located. A sealing strip for closing the air vent is fixedly installed on the air guide plate, and a baffle is movably installed at the air outlet of the wind knife through a corresponding elastic member. When the guide groove needs to be cleaned, the wind pressure of the wind knife is increased to a set value, so that the baffle is driven to block the air outlet of the wind knife after being pressurized, thereby increasing the internal pressure of the wind knife, and then the sealing strip is turned over after being pressurized. At this time, the high-pressure airflow will enter the area where the air guide plate is located through the air vents, and under the guidance of the air guide plate, the water in the guide groove will be drained, and the stains accumulated in the guide groove will be drained away together.

[0030] 4) The blower of the air inlet mechanism of the present invention is connected to the corresponding air distribution pipe, one end of the air distribution pipe is closed, and the other end is detachably installed with an end cover plate, a connecting pipe is sealed and rotatably installed in the air distribution pipe, and a cylindrical filter core facing the end cover plate is fixedly connected to the connecting pipe, and then the air inlet end of the blower is connected to the side of the connecting pipe that is not connected to the cylindrical filter core; finally, the impeller of the blower and the connecting pipe are respectively connected to the output shaft end of the corresponding driving motor. In this way, during the operation of the blower, the cylindrical filter core can be synchronously driven to rotate, so that the cylindrical filter core has obvious centrifugal force, thereby ensuring that the air volume generated by the operation of the blower can be smoothly discharged through the cylindrical filter core, so that the filtered air volume is driven into the air outlet pipe through the air distribution pipe and the air distribution pipe, and is heated in the air outlet pipe and blown to the upper and lower sides of the LCD glass substrate transmitted through the roller conveyor, thereby effectively and significantly reducing the probability of dust entering the drying room without affecting the smoothness of the hot air circulation.

[0031] 5) The present invention is further provided with an exhaust mechanism, which includes two rows of air ducts connected side by side at different heights to the side of the drying chamber where no air inlet mechanism is provided, the air ducts are respectively connected to corresponding exhaust ducts, a moisture absorption mechanism is detachably installed on the side of the exhaust duct close to the feed end of the drying chamber, and a hot air knife located on the upper side of the feed end of the drying chamber is connected to the exhaust duct and the exhaust fan on the side of the exhaust duct close to the feed end of the drying chamber, and the air outlet of the hot air knife is tilted downward. Thus, the hot air blown to the upper and lower sides of the LCD glass substrate is timely exhausted, and after a small amount of moisture contained in the hot air is absorbed, the hot air with residual heat is blown to the LCD glass substrate about to enter the drying chamber through the hot air knife, so as to pre-dry the LCD glass substrate about to enter the drying chamber, thereby effectively improving the drying effect of the LCD glass substrate, so as to effectively and significantly improve the utilization rate of heat energy without affecting the smoothness of the hot air circulation.

[0032] 6) The present invention uses a cover plate to detachably install the moisture-absorbing filter cartridge installed with moisture-absorbing desiccant material on the side of the exhaust pipe close to the feeding end of the drying chamber, so as to facilitate the replacement of the moisture-absorbing desiccant; and the exhaust pipe is provided with an air guide convex edge with an inner aperture smaller than that of the moisture-absorbing filter cartridge. After installation, the inner end of the moisture-absorbing filter cartridge is closed and abuts against the air guide convex edge. This ensures that all the hot air with moisture passes through the moisture-absorbing filter cartridge and contacts the moisture-absorbing desiccant before entering the hot air knife for discharge, thereby effectively ensuring the practical effect of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the present invention.

[0034] Figure 2 It is a schematic structural diagram of the cleaning device of the present invention.

[0035] Figure 3 This is a schematic diagram of the structure of the cleaning device after removing the isolation cover.

[0036] Figure 4 It is a schematic diagram of the structure of the cleaning mechanism and the defogger mechanism.

[0037] Figure 5 It is a cross-sectional view of the wind knife and the adsorption cotton roller.

[0038] Figure 6 It is a schematic structural diagram of the drying device of the present invention.

[0039] Figure 7 It is a distribution diagram of the air inlet mechanism and the air exhaust mechanism of the present invention.

[0040] Figure 8 It is a structural schematic diagram of the air inlet mechanism.

[0041] Fig. 9It is a schematic diagram of the structure in which a cylindrical filter element is connected to a connecting pipe.

[0042] Fig.10 It is a schematic diagram of the assembly of the cylindrical filter element.

[0043] Fig.11 It is a cross-sectional view of the moisture absorption mechanism.

[0044] In the attached drawings: roller conveyor 1, cleaning device 2, isolation cover 201, cleaning mechanism 202, spray pipe 2021, cleaning nozzle 2022, wind knife 2023, water collection and drainage groove 203, demisting mechanism 204, adsorption cotton roller 2041, guide groove 2042, cleaning and drainage mechanism 205, air guide plate 2051, sealing strip 2052, drying device 3, drying chamber 301, air inlet mechanism 302, blower 3021, air distribution duct 3022, connecting pipe 3023, cylindrical filter element 3024, cylindrical frame 30241, filter plate 30242, drive The motor 3025, the air distribution duct 3026, the air outlet duct 3027, the exhaust mechanism 303, the air guide duct 3031, the connecting pipe 3032, the exhaust duct 3033, the moisture absorption mechanism 304, the moisture absorption filter cartridge 3041, the moisture absorption desiccant 3042, the cover plate 3043, the end cover plate 4, the duct 5, the electric heater 6, the closing plate 7, the air vent 8, the elastic member 9, the baffle 10, the cotton roller drive motor 11, the drain valve 12, the drain pipe 13, the exhaust duct 14, the exhaust fan 15, the hot air supply knife 16, the air guide convex edge 17, the air distribution container 18, and the waterproof bearing 19. DETAILED DESCRIPTION

[0045] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the embodiments in conjunction with the accompanying drawings:

[0046] refer to Figure 1-11 , a pretreatment device for LCD glass substrate processing, comprising a roller conveyor 1, a cleaning device 2 and a drying device 3,

[0047] The cleaning device 2 comprises:

[0048] An isolation cover 201 is arranged at the front side of the roller conveyor 1;

[0049] The cleaning mechanism 202 comprises a spray pipe 2021 disposed in the isolation cover 201, a plurality of cleaning nozzles 2022 with openings facing downward are arranged side by side on the bottom side of the spray pipe 2021, and corresponding air knives 2023 are arranged inwardly and tilted on both sides of the spray pipe 2021, and the air outlets of the air knives 2023 face the lower sides of the cleaning nozzles 2022;

[0050] The water collection and drainage trough 203 is arranged at the lower side of the roller conveyor 1 at the lower side of the isolation cover 201, and is used to collect and discharge the waste water generated by cleaning;

[0051] The defogger mechanism 204 comprises an adsorption cotton roller 2041 rotatably mounted on the inner side of the wind knife 2023, the adsorption cotton roller 2041 is respectively located on the upper side of the air outlet of the corresponding wind knife 2023, the adsorption cotton roller 2041 and the corresponding wind knife 2023 are arranged at intervals, and the wind knife 2023 is respectively provided with a guide groove 2042 for squeezing and scraping the adsorption cotton roller 2041, and the two sides of the guide groove 2042 are connected and located on the upper side of the water collection and drainage groove 203;

[0052] The drying device 3 comprises:

[0053] A drying chamber 301 is arranged at the rear side of the roller conveyor 1;

[0054] The air inlet mechanism 302 comprises a blower 3021 fixedly arranged at one side of the drying chamber 301, the air inlet end of the blower 3021 is connected to a corresponding air distribution pipe 3022, one end of the air distribution pipe 3022 is closed, and the other end is detachably mounted with a corresponding end cover plate 4, a corresponding connecting pipe 3023 is sealed and rotatably mounted in the air distribution pipe 3022, a cylindrical filter core 3024 facing the end cover plate 4 is fixedly connected to the connecting pipe 3023, and the air inlet end of the blower 3021 is connected to the side of the connecting pipe 3023 that is not connected to the cylindrical filter core 3024, The impeller of the blower 3021 and the connecting pipe 3023 are respectively connected to the output shaft end of the corresponding driving motor 3025; a group of air distribution ducts 3026 located on the upper and lower sides of the roller conveyor 1 are arranged on the outside of the drying chamber 301, and the air distribution ducts 3026 are respectively connected to the upper and lower sides of the air distribution duct 3022 through corresponding conduits 5, and air outlet ducts 3027 penetrating into the drying chamber 301 are arranged at intervals on the air distribution ducts 3026, and the air outlet ends of the air outlet ducts 3027 are respectively facing the roller conveyor 1, and corresponding electric heaters 6 are fixedly installed.

[0055] When the LCD glass substrate is cleaned, the cleaning water flows downward along the cleaning nozzle 20222 to flush the LCD glass substrate. During the process, the inwardly inclined wind knife 2023 forms a wind curtain on both sides of the cleaning water flushed onto the LCD glass substrate, so as to isolate the width of the cleaning water flushed onto the LCD glass substrate within a smaller range, so that the cleaning water flows into the water collection and drainage groove 203 along both sides of the LCD glass substrate, thereby greatly shortening the residence time of the cleaning water on the LCD glass substrate, preventing the flushed stains from re-attaching to the surface of the LCD glass substrate, thereby effectively ensuring the cleaning effect.

[0056] Since the wind knife 2023 forms a wind curtain on both sides of the cleaning water flushed onto the LCD glass substrate, and the cleaning water is also prone to splashing when flushing the LCD glass substrate, even if the width of the cleaning water is isolated within a small range, some stains will bounce back to the surface of the LCD glass substrate with the splashed water, causing the stains to reattach to the surface of the LCD glass substrate. To this end, the present invention further adds a defogging mechanism 204, which includes an adsorption cotton roller 2041 rotatably mounted on the inner side of the wind knife 2023, and the rotating adsorption cotton roller 2041 timely absorbs the splashed cleaning water, and promptly scrapes it into the guide groove 2042 for external discharge, thereby greatly reducing the probability of the stains rebounding back to the surface of the LCD glass substrate with the splashed water, so as to further prevent the washed away stains from reattaching to the surface of the LCD glass substrate, thereby effectively further ensuring the cleaning effect.

[0057] The blower 3021 of the air inlet mechanism 302 of the present invention is connected to the corresponding air distribution pipe 3022, and a connecting pipe 3023 is sealed and rotatably installed in the air distribution pipe 3022. A cylindrical filter element 3024 facing the end cover plate 4 is fixedly connected to the connecting pipe 3023, and then the air inlet end of the blower 3021 is connected to the side of the connecting pipe 3023 that is not connected to the cylindrical filter element 3024. Finally, the impeller of the blower 3021 and the connecting pipe 3023 are respectively connected to the output shaft end of the corresponding drive motor 3025. In this way, during the operation of the blower 3021, the cylindrical filter element 3024 can be synchronously driven to rotate, so that the cylindrical filter element 3024 has obvious centrifugal force, thereby ensuring that the air volume generated by the operation of the blower 3021 can be smoothly discharged through the cylindrical filter element 3024, so that the filtered air volume is driven into the air outlet duct 3027 through the air distribution duct 3022 and the air distribution duct 3026, and is heated in the air outlet duct 3027 and then blown to the upper and lower sides of the LCD glass substrate transmitted through the roller conveyor 1, thereby effectively and significantly reducing the probability of dust entering the drying room without affecting the smoothness of the hot air circulation.

[0058] The cleaning device 2 also includes a cleaning and exhausting mechanism 205, with the middle of the guide groove 2042 as the base point, and the two sides of the guide groove 2042 are respectively inclined downward, and the cleaning and exhausting mechanism 205 includes an air guide plate 2051 arranged on the upper side of the guide groove 2042, and the air guide plate 2051 is arranged in an inverted L shape, and the top of the air guide plate 2051 is fixedly connected to the wind knife 2023, and the two sides of the air guide plate 2051 are fixedly connected to the wind knife 2023 with corresponding closing plates 7, and the wind knife 2023 is provided with an air vent 8 connected to the area where the air guide plate 2051 is located, and the air guide plate 2051 is fixedly installed with a sealing strip 2052 for closing the air vent 8.

[0059] A corresponding baffle 10 is movably installed at the air outlet of the wind knife 2023 through a corresponding elastic member 9. When the wind pressure of the wind knife 2023 increases to a set value, the baffle 10 is pressurized, the elastic member 9 is stretched, and the baffle 10 is driven to block the air outlet of the wind knife 2023. The internal pressure of the wind knife 2023 increases, and the sealing strip 2052 opens after being pressurized. The high-pressure airflow enters the area where the air guide plate 2051 is located through the air vent 8, and the water in the guide groove 2042 is cleared and discharged under the guidance of the air guide plate 2051.

[0060] The cleaning water scraped into the guide groove 2042 is likely to be accompanied by stains, which are likely to accumulate in the guide groove 2042. Therefore, the guide groove 2042 needs to be cleaned regularly, which is obviously more difficult for the guide groove 2042 arranged in the isolation cover 201. For this reason, the present invention is further provided with a cleaning mechanism 205. When the guide groove 2042 needs to be cleaned, it is only necessary to increase the wind pressure of the wind knife 2023 to a set value, so that the baffle 10 is driven to block the air outlet of the wind knife 2023 after being pressed, so that the internal pressure of the wind knife 2023 is increased, and then the sealing strip 2052 is opened after being pressed. At this time, the high-pressure airflow will enter the area where the air guide plate 2051 is located through the air vent 8, and under the guidance of the air guide plate 2051, the water in the guide groove 2042 is cleaned and discharged, and the stains accumulated in the guide groove 2042 are cleaned and discharged together.

[0061] The adsorption cotton roller 2041 is driven by a cotton roller driving motor 11 fixedly mounted on the isolation cover 201; the bottom side of the water collection and drainage trough 203 is externally connected to a drainage pipe 13 equipped with a drainage valve 12.

[0062] The drying device 3 also includes an exhaust mechanism 303, which includes two rows of air ducts 3031 connected side by side in height to the side of the drying chamber 301 where the air inlet mechanism 302 is not provided, and the air ducts 3031 are connected to the corresponding exhaust ducts 3033 through corresponding connecting pipes 3032 respectively, and the exhaust duct 3033 is detachably installed with a corresponding moisture absorption mechanism 304 on the side close to the feed end of the drying chamber 301, and the exhaust duct 3033 is externally connected to a hot air knife 16 located on the upper side of the feed end of the drying chamber 301 through the corresponding exhaust duct 14 and the exhaust fan 15, and the air outlet of the hot air knife 16 is arranged to be tilted downward.

[0063] The present invention is further provided with an exhaust mechanism 303, which can timely exhaust the hot air blown toward the upper and lower sides of the LCD glass substrate, absorb a small amount of moisture contained in the hot air, and then blow the hot air with residual heat through the hot air knife 16 toward the LCD glass substrate that is about to enter the drying chamber, so as to pre-dry the LCD glass substrate that is about to enter the drying chamber, thereby effectively improving the drying effect of the LCD glass substrate, and effectively and significantly improving the utilization rate of heat energy without affecting the smoothness of the hot air circulation.

[0064] The moisture absorption mechanism 304 comprises a moisture absorption filter cartridge 3041 detachably mounted on the exhaust pipe 3033 near the feeding end of the drying chamber 301 , and the moisture absorption filter cartridge 3041 is filled with a corresponding moisture absorption desiccant 3042 .

[0065] The exhaust pipe 3033 is detachably connected to a corresponding cover plate 3043 on one side close to the feed end of the drying chamber 301 by a threaded connection, and the moisture absorbing filter cartridge 3041 is detachably connected to the cover plate 3043 by a threaded connection; the exhaust pipe 3033 is provided with an air guide ridge 17 whose inner pore diameter is smaller than that of the moisture absorbing filter cartridge 3041, and the inner end of the moisture absorbing filter cartridge 3041 is closed and abutted against the air guide ridge 17.

[0066] The present invention uses the cover plate 3043 to detachably install the moisture absorbing filter cartridge 3041 installed with moisture absorbing desiccant material to the side of the exhaust pipe 3033 close to the feeding end of the drying chamber 301, so as to facilitate the replacement of the moisture absorbing desiccant 3042; and the exhaust pipe 3033 is provided with an air guide convex edge 17 with an inner aperture smaller than the moisture absorbing filter cartridge 3041. After being installed in place, the inner end of the moisture absorbing filter cartridge 3041 is closed and abutted against the air guide convex edge 17. This ensures that all the hot air with moisture passes through the moisture absorbing filter cartridge 3041 and contacts the moisture absorbing desiccant 3042 before entering the hot air supply knife 16 for discharge, thereby effectively ensuring the practical effect of the present invention.

[0067] The air outlet ends of the air outlet pipes 3027 are respectively provided with air distribution containers 18 facing the roller conveyor 1, the air inlet ends of the air distribution containers 18 are connected to the air outlet ends of the air outlet pipes 3027, the air outlet ends of the air distribution containers 18 are arranged in a long strip shape and face the roller conveyor 1, and the electric heater 6 is fixedly installed in the corresponding air distribution containers 18.

[0068] The cylindrical filter element 3024 comprises a cylindrical frame 30241 and a plurality of filter plates 30242 fixedly mounted on the cylindrical frame 30241. The cylindrical frame 30241 is connected to the connecting pipe 3023 by means of flange locking. The connecting pipe 3023 is rotatably mounted in the air distribution pipe 3022 by means of a waterproof bearing 19.

[0069] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A pretreatment device for LCD glass substrate processing, comprising a roller conveyor (1), a cleaning device (2) and a drying device (3), characterized in that: The cleaning device (2) comprises: An isolation cover (201) is arranged on the front side of the roller conveyor (1); The cleaning mechanism (202) comprises a spray pipe (2021) arranged in the isolation cover (201), a plurality of cleaning nozzles (2022) with openings facing downwards are arranged side by side on the bottom side of the spray pipe (2021), and corresponding air knives (223) are arranged inwardly inclined on both sides of the spray pipe (2021), and the air outlets of the air knives (223) face the lower sides of the cleaning nozzles (2022); A water collection and drainage trough (203) is arranged on the lower side of the roller conveyor (1) below the isolation cover (201) and is used to collect and discharge waste water generated by cleaning; The demisting mechanism (204) comprises an adsorption cotton roller (2041) rotatably mounted on the inner side of the wind knife (2023), the adsorption cotton roller (2041) being respectively located on the upper side of the air outlet of the corresponding wind knife (2023), the adsorption cotton roller (2041) being arranged at an interval with the corresponding wind knife (2023), and the wind knife (2023) being respectively provided with a guide groove (2042) for squeezing and scraping the adsorption cotton roller (2041), the two sides of the guide groove (2042) being arranged in communication and being located on the upper side of the water collecting and draining groove (203); The drying device (3) comprises: A drying chamber (301) is arranged at the rear side of the roller conveyor (1); The air inlet mechanism (302) comprises a blower (3021) fixedly arranged at one side of the drying chamber (301); the air inlet end of the blower (3021) is connected to a corresponding air distribution pipe (3022); one end of the air distribution pipe (3022) is closed and a corresponding end cover plate (4) is detachably mounted on the other end; a corresponding connecting pipe (3023) is sealed and rotatably mounted in the air distribution pipe (3022); a cylindrical filter core (3024) facing the end cover plate (4) is fixedly connected to the connecting pipe (3023); the air inlet end of the blower (3021) is connected to a side of the connecting pipe (3023) that is not connected to the cylindrical filter core (3024); The impeller of the blower (3021) and the connecting pipe (3023) are respectively connected to the output shaft end of the corresponding driving motor (3025); a group of air distribution pipes (3026) are arranged on the outside of the drying chamber (301) and located on the upper and lower sides of the roller conveyor (1); the air distribution pipes (3026) are respectively connected to the upper and lower sides of the air distribution pipe (3022) through corresponding guide tubes (5); air outlet pipes (3027) are arranged on the air distribution pipes (3026) at intervals and penetrate into the drying chamber (301); the air outlet ends of the air outlet pipes (3027) are respectively facing the roller conveyor (1) and fixedly installed with corresponding electric heaters (6); The cleaning device (2) further comprises a cleaning and exhausting mechanism (205), with the middle of the guide groove (2042) as a base point, and the two sides of the guide groove (2042) are respectively arranged to be inclined downward, the cleaning and exhausting mechanism (205) comprises an air guide plate (2051) arranged on the upper side of the guide groove (2042), the air guide plate (2051) being arranged in an inverted L shape, the top of the air guide plate (2051) being fixedly connected to the wind knife (2023), and corresponding closing plates (7) being fixedly connected between the two sides of the air guide plate (2051) and the wind knife (2023), the wind knife (223) being provided with an air vent (8) connected to the area where the air guide plate (2051) is located, and a sealing strip (2052) for sealing the air vent (8) is fixedly installed on the air guide plate (2051); A corresponding baffle (10) is movably mounted at the air outlet of the wind knife (2023) via a corresponding elastic member (9); when the wind pressure of the wind knife (2023) increases to a set value, the baffle (10) is compressed, the elastic member (9) is stretched, and the baffle (10) is driven to block the air outlet of the wind knife (2023); the internal pressure of the wind knife (2023) increases, the sealing strip (2052) is opened after being compressed, and the high-pressure airflow enters the area where the air guide plate (2051) is located through the air vent (8), and the water in the guide groove (2042) is cleared and discharged under the guidance of the air guide plate (2051).

2. The LCD glass substrate processing pretreatment equipment according to claim 1, characterized in that: The adsorption cotton roller (2041) is driven by a cotton roller driving motor (11) fixedly mounted on the isolation cover (201); the bottom side of the water collection and drainage trough (203) is externally connected to a drainage pipe (13) equipped with a drainage valve (12).

3. The LCD glass substrate processing pretreatment equipment according to claim 1, characterized in that: The drying device (3) further comprises an exhaust mechanism (303), comprising two rows of air guide pipes (3031) connected side by side in height to a side of the drying chamber (301) where the air inlet mechanism (302) is not provided, the air guide pipes (3031) being connected to corresponding exhaust pipes (3033) via corresponding connecting pipes (3032), a corresponding moisture absorption mechanism (304) being detachably mounted on a side of the exhaust pipe (3033) close to the feed end of the drying chamber (301), and a hot air supply knife (16) located on the upper side of the feed end of the drying chamber (301) being connected to the outside via a corresponding exhaust duct (14) and an exhaust fan (15), the air outlet of the hot air supply knife (16) being arranged to be tilted downward.

4. The LCD glass substrate pretreatment equipment according to claim 3, characterized in that: The moisture absorption mechanism (304) comprises a moisture absorption filter cartridge (3041) detachably mounted on the exhaust pipe (3033) near the feeding end of the drying chamber (301), and the moisture absorption filter cartridge (3041) is filled with a corresponding moisture absorption desiccant (3042).

5. The LCD glass substrate processing pretreatment equipment according to claim 4, characterized in that: A corresponding cover plate (3043) is detachably connected to one side of the exhaust pipe (3033) close to the feed end of the drying chamber (301) by means of a threaded connection, and the moisture absorption filter cartridge (3041) is detachably connected to the cover plate (3043) by means of a threaded connection; the exhaust pipe (3033) is provided with an air guide ridge (17) whose inner pore diameter is smaller than that of the moisture absorption filter cartridge (3041), and the inner end portion of the moisture absorption filter cartridge (3041) is closed and abuts against the air guide ridge (17).

6. The LCD glass substrate pretreatment equipment according to claim 1, characterized in that: The air outlet ends of the air outlet pipes (3027) are respectively provided with air distribution containers (18) facing the roller conveyor (1); the air inlet ends of the air distribution containers (18) are connected to the air outlet ends of the air outlet pipes (3027); the air outlet ends of the air distribution containers (18) are arranged in a long strip shape and face the roller conveyor (1); and the electric heater (6) is fixedly installed in the corresponding air distribution containers (18).

7. The LCD glass substrate pretreatment equipment according to claim 1, characterized in that: The cylindrical filter element (3024) comprises a cylindrical frame (30241) and a plurality of filter plates (30242) fixedly mounted on the cylindrical frame (30241); the cylindrical frame (30241) is connected to the connecting pipe (3023) by means of flange locking.

8. The LCD glass substrate pretreatment equipment according to claim 1, characterized in that: The connecting pipe (3023) is installed in the air distribution pipe (3022) in a sealed and rotatable manner via a waterproof bearing (19).

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