Recycling system and method of aluminum template

Abstract

The invention discloses a recycling system and method for an aluminum template, and belongs to the technical field of aluminum templates. The method comprises the following steps: manually hooking one or more aluminum templates on a conveying hanger through a plurality of hooks at a feeding and discharging section; the surface of the aluminum template is cleaned through a shot blasting device; the aluminum template is subjected to spraying cleaning and shot blasting removal through the spraying rolling brush device; the aluminum template is dried, swept and cleaned through a hot air drying device, and shot blasting is removed; the aluminum template is sprayed through a spraying device; baking the aluminum template through a baking device; the aluminum templates are manually taken down from the conveying hanging frame at the feeding and discharging section; the hot air supply device supplies hot air to the first hot air blow-drying structure and the baking device, the hot air exhausted by the baking device is conveyed to the second hot air blow-drying structure for use, and the conveying hanging rack can be obliquely upward backwards and then obliquely downward forwards in the hot air blow-drying device and the baking device; exhaust gas of the hot air drying device, dust of the shot blasting device and tail gas of the spraying device are all conveyed to the cyclone separator.

Description

Technical Field

[0001] The present invention belongs to the technical field of aluminum formwork, and particularly relates to a recycling system and method for aluminum formwork. Background Art

[0002] The full name of the aluminum alloy formwork is the concrete engineering aluminum alloy formwork, which is a new generation of formwork system following the plywood formwork, combined steel formwork system, steel frame wood (bamboo) plywood formwork system, large formwork system, and early removal formwork system. The aluminum alloy formwork is mainly made of aluminum alloy profiles, and is a formwork suitable for concrete engineering made through machining and welding processes, etc., and is composed of a panel, ribs, main profiles, flat formwork, corner formwork, and early removal devices, etc., designed according to a 50mm modulus. The design and construction application of the aluminum alloy formwork is an innovation in the formwork technology of concrete engineering, a promotion of prefabricated concrete technology, and an embodiment of the industrialization of construction technology.

[0003] After the aluminum formwork is used on the construction site and returned to the factory, the surface cement needs to be cleaned up to facilitate subsequent reuse. Generally, in the factory, the aluminum formwork is manually hung on the conveying chain, and the conveying chain conveys it into a shot blasting machine for cleaning, and then spraying treatment is carried out.

[0004] For example, the patent with the application number CN202210635032.3 discloses a spraying production line for external spraying of aluminum formwork, including a transmission rack, and a blowing and cleaning mechanism, a coating electrostatic spraying mechanism, and a baking mechanism are sequentially arranged along the transmission direction of the transmission rack. The blowing and cleaning mechanism is used for blowing and cleaning the surface of the aluminum formwork, the coating electrostatic spraying mechanism is used for spraying the coating on the surface of the aluminum formwork, and the baking mechanism is used for baking the coating on the surface of the aluminum formwork.

[0005] For example, the patent with application number CN202110953630.0 discloses a device for processing aluminum templates to be refurbished, including a shot blasting machine, a conveyor chain passing through the inside of the shot blasting machine, a plurality of hooks are hung on the conveyor chain at equal intervals, and a conveyor belt is arranged on one side near the feeding end of the shot blasting machine and below the conveyor chain; the feeding end and the discharging end of the conveyor belt are respectively provided with a feeding mechanism and a discharging mechanism; the feeding mechanism includes an L-shaped bottom plate and a horizontal mounting plate arranged between the side plates on both sides of the conveyor belt, the L-shaped bottom plate includes a horizontal portion and a vertical portion, and the side of the horizontal portion is provided with The horizontal mounting plate and the vertical portion are provided with a plurality of elastic push plates at equal intervals, and a pushing assembly used in conjunction with the elastic push plates is provided on one side of the plurality of elastic push plates and on the horizontal mounting plate; the discharging mechanism comprises a horizontal side plate provided on the side of the end bracket of the conveyor belt, and a plurality of lifting electric cylinders are provided on the horizontal side plate, and an L-shaped lifting plate is provided at the end of the electric push rods of the plurality of lifting electric cylinders; a material blocking assembly which is linked to the L-shaped lifting plate is also provided at the discharging end of the conveyor belt, and an auxiliary flipping mechanism is provided between the feeding mechanism and the discharging mechanism of the conveyor belt and on the conveyor belt.

[0006] In the prior art, the aluminum template can be surface treated by a shot blasting machine and sprayed by a spraying device. Usually, these two processes cannot be performed simultaneously because the shot blasting machine has very small balls, which are easily left on the aluminum template (especially holes, angles, etc.), resulting in the balls being fixed on the aluminum template during painting, which affects the precision and appearance of the aluminum template. In addition, the aluminum template is very dirty and may contain dirt, grease, and other impurities, so the effect of cleaning with shot blasting alone is not good. Summary of the invention

[0007] In order to solve the above problems, the embodiment of the present invention provides a system and method for recycling aluminum templates, which can simultaneously realize surface cleaning and spraying with good surface cleaning effect. The technical solution is as follows: On the one hand, an embodiment of the present invention provides a recycling system for aluminum formwork. The system includes a transfer hanger 1, a spraying device 5, a baking device 6, a hot air supply device 7, a cyclone separator 8, a dust removal device 9, a shot blasting device 2, a spray brush device 3, and a hot air drying device 4. The hot air supply device 7 is connected to the baking device 6, and the dust removal device 9 is connected to the cyclone separator 8 through a pipeline. The transfer hanger 1 is distributed in a concave shape and includes a feeding and discharging section 11, a first outer straight section 12, a first inner straight section 13, a second inner straight section 14, and a second outer straight section 15 that are connected in sequence from beginning to end. The feeding and discharging section 11 is located at the front end, and the first outer straight section 12, the first inner straight section 13, the second inner straight section 14, and the second outer straight section 15 are all arranged in the front-rear direction. The baking device 6 is a bin structure arranged in the front-rear direction, with an open front end and a first air hood 10 provided at the front end of its top. The rear parts of the second inner straight section 14 and the second outer straight section 15 are both located inside the baking device 6, arranged side by side on the left and right, and slanting upward from front to back. The shot blasting device 2 and the spray brush device 3 are sequentially arranged at the front of the first outer straight section 12 from front to back. The hot air drying device 4 is a bin structure arranged in the front-rear direction, with an open front end and a second air hood 43 provided at the front end of its top. Inside it and at the rear of the first outer straight section 12, there is a first hot air drying structure 44, and inside it and at the rear of the first inner straight section 13, there is a second hot air drying structure 45. The first hot air drying structure 44 and the second hot air drying structure 45 are respectively connected to the hot air supply device 7 and the first air hood 10 through pipelines with blowers. The rear parts of the first outer straight section 12 and the first inner straight section 13 are both located inside the hot air drying device 4, arranged side by side on the left and right, and slanting upward from front to back. The spray brush device 3 is located on the front side or adjacent front of the hot air drying device 4. The spraying device 5 is located at the front of the first inner straight section 13. The second air hood 43, the tail gas outlet of the spraying device 5, the tail gas outlet of the hot air drying device 4, and the dust outlet of the shot blasting device 2 are all connected to the cyclone separator 8 through pipelines with blowers.

[0008] Among them, the shot blasting device 2 in the embodiment of the present invention includes a shot blasting chamber 21 arranged in the front-rear direction, two third air hoods 22 at the front and rear ends of the top of the shot blasting chamber 21, a spiral material collecting structure arranged at the bottom of the shot blasting chamber 21 in the front-rear direction, a feed bin 23 directly above the middle of the shot blasting chamber 21, a spiral feeding structure 24 arranged at the top of the feed bin 23 in the left-right direction, a vertical purging structure 25 at the rear of the top of the shot blasting chamber 21, and a lifting structure arranged on the left or right side of the shot blasting chamber 21 between the spiral material collecting structure and the spiral feeding structure 24; the transmission hanger 1 passes through the shot blasting chamber 21, and strip-shaped openings for the transmission hanger 1 to pass through are arranged vertically at the front and rear ends of the shot blasting chamber 21. Two first soft sealing plates are arranged on the left and right sides of the strip-shaped opening. The two first soft sealing plates are respectively located on the left and right sides of the transmission hanger 1, and multiple slits are arranged side by side up and down at the ends close to the transmission hanger 1; a strip-shaped discharge port is arranged at the bottom of the spiral feeding structure 24; the feed bin 23 is connected to the shot blasting machine in the shot blasting chamber 21 through a pipeline. The vertical purging structure 25 is located directly above the transmission hanger 1 and purges downward; a feeding and air inlet is arranged on the front or rear side of the feed bin 23, and an air separation outlet is arranged on the other side; the air separation outlet and the third air hood 22 are connected to the cyclone separator 8 as dust outlets.

[0009] Among them, the spray and brush rolling device 3 in the embodiment of the present invention includes a water circulation structure, a cleaning chamber 31 arranged in the front-rear direction, a water tank at the bottom of the cleaning chamber 31, and two groups of cleaning structures 32 arranged side by side left and right in the cleaning chamber 31. The transmission hanger 1 passes through the cleaning chamber 21, and strip-shaped openings for the transmission hanger 1 to pass through are arranged vertically at the front and rear ends of the cleaning chamber 21. Two second soft sealing plates are arranged on the left and right sides of the strip-shaped opening. The two second soft sealing plates are respectively located on the left and right sides of the transmission hanger 1, and multiple slits are arranged side by side up and down at the ends close to the transmission hanger 1; the two groups of cleaning structures 32 are respectively located on the left and right sides of the transmission hanger 1. The cleaning structure 32 includes a plurality of swinging rolling brushes arranged side by side front and rear and a nozzle that sprays water to the swinging rolling brush beside the swinging rolling brush. The water circulation structure is used to purify water, and the water tank, the water circulation structure, and the nozzle are connected in sequence through pipelines.

[0010] Among them, the hot air drying device 4 in the embodiment of the present invention includes a hot air bin 41 arranged along the front-rear direction, a partition 42 in the middle of the hot air bin 41, a second air hood 43 at the front end of the top of the hot air bin 41, a first hot air drying structure 44 in the hot air bin 41 and located at the rear of the first outer straight segment 12, a second hot air drying structure 45 in the hot air bin 41 and located at the rear of the first inner straight segment 13, a filter screen at the bottom inside the hot air bin 41, and an exhaust gas outlet at the bottom of the hot air bin 41 and below the filter screen; the front end of the hot air bin 41 is open; the partition 42 is arranged along the front-rear direction, located between the first outer straight segment 12 and the first inner straight segment 13, and there is a gap for the transmission hanger 1 to pass between its rear end and the rear side of the hot air bin 41; the transmission hanger 1 is arranged at the top inside the hot air bin 41, and the spraying and rolling brush device 3 is located at the front side or adjacent front of the hot air bin 41; both the first hot air drying structure 44 and the second hot air drying structure 45 include two blowing units arranged side by side left and right; the two blowing units are respectively located on the left and right sides of the transmission hanger 1, and are respectively arranged on the corresponding sides of the side wall of the hot air bin 41 and the partition 42, and both include a plurality of strip-shaped blowing nozzles arranged side by side front and rear; the strip-shaped blowing nozzles are arranged towards the transmission hanger 1, perpendicular to the transmission hanger 1, and are connected to the hot air supply device 7 or the first air hood 10 through a pipeline with a blower; the metal shot of the shot blasting device 2 cannot pass through the filter screen.

[0011] Preferably, the hot air drying device 4 in the embodiment of the present invention further includes a metal detector 46 and a high-pressure purging structure 47; both the metal detector 46 and the high-pressure purging structure 47 are arranged inside the hot air bin 41, and are both arranged at the first inner straight segment 13; the second hot air drying structure 45, the metal detector 46, and the high-pressure purging structure 47 are arranged in sequence from front to back, the metal detector 46 can allow the transmission hanger 1 to pass through, and the high-pressure purging structure 47 is used to purge the aluminum formwork detected with metal shot and includes two nozzle units; the two nozzle units are respectively located on the left and right sides of the transmission hanger 1, and are respectively arranged on the corresponding sides of the side wall of the hot air bin 41 and the partition 42, are arranged towards the transmission hanger 1, can move up and down, the air pressure can make the transmission hanger 1 shake, and they do not act simultaneously.

[0012] Preferably, the bottoms of the baking device 6 and the hot air bin 41 in the embodiment of the present invention are both arranged obliquely upward from front to back, and their rear parts are suspended; the hot air supply device 7 is arranged directly below the rear part of the baking device 6, and the water circulation structure is arranged directly below the rear part of the hot air bin 41.

[0013] Preferably, the cyclone separator 8 and the dust removal device 9 in the embodiment of the present invention are arranged side by side front and rear, and are arranged between the front part of the first inner straight segment 13 and the front part of the second inner straight segment 14.

[0014] On the other hand, the embodiment of the present invention also provides a method for recycling aluminum formwork, and the method includes: S101: Manually at the loading and unloading section 11, one or more aluminum formworks are hooked on the transfer hanger 1 through one or more hooks.

[0015] S102: The aluminum formwork is surface-cleaned by the shot blasting device 2.

[0016] S103: The aluminum formwork is spray-cleaned and the shot blasting is removed through the spray-rolling brush device 3.

[0017] S104: The aluminum formwork is dried, purged and the shot blasting is removed through the hot air drying device 4.

[0018] S105: The aluminum formwork is sprayed by the spraying device 5.

[0019] S106: The aluminum formwork is baked by the baking device 6.

[0020] S107: Manually at the loading and unloading section 11, the aluminum formwork is removed from the transfer hanger 1.

[0021] Among them, the hot air supply device 7 supplies hot air to the first hot air drying structure 44 and the baking device 6, and the hot air exhausted from the baking device 6 is sent to the second hot air drying structure 45 for use. The transfer hanger 1 can first be inclined obliquely backward and upward and then obliquely forward and downward in both the hot air drying device 4 and the baking device 6; the exhaust gas of the hot air drying device 4, the dust of the shot blasting device 2, and the tail gas of the spraying device 5 are all sent to the cyclone separator 8 for unified treatment.

[0022] Preferably, step S104 further includes: using a metal detector 46 to detect the aluminum formwork and controlling a high-pressure purging structure 47 to purge the aluminum formwork detected with metal shot blasting and simultaneously cool the aluminum formwork. The purging of the high-pressure purging structure 47 can make the aluminum formwork shake; the two nozzle units do not act simultaneously.

[0023] The beneficial effects brought by the technical solution provided by the embodiment of the present invention are: (1) There are multiple functions of the inclined baking device: one is to extend the baking time, the second is to make the un-cured shot blasting after spraying roll obliquely, and the third is to facilitate the setting of the hot air supply device.

[0024] (2) There are multiple functions of the inclined hot air drying device: one is to extend the drying time, the second is to make the shot blasting roll obliquely, the third is to facilitate the setting of the water circulation structure, and the fourth is to improve the purging effect.

[0025] (3) A vertical purging structure, a wind selection structure, etc. are provided on the shot blasting device to reduce the residue of shot blasting, dust, etc. on the aluminum formwork.

[0026] (4) The functions of the spray swing brush device are at least three: one is for cleaning, the second is for removing shot peening, and the third is to loosen the shot peening that cannot be cleaned; using a swing brush not only has a good effect, but also can adapt to various aluminum formworks and their hanging methods, and at the same time will not make the aluminum formwork too wet to ensure that it can be dried by hot air.

[0027] (5) The hot air drying device first uses high-temperature hot air for drying to basically dry the moisture on the aluminum formwork; then uses the low-temperature hot air of the baking device for drying, and has multiple functions: one is to reduce energy consumption, the second is to keep the temperature of the aluminum formwork not too high, and the third is to make a small amount of coating in the low-temperature hot air adhere to the aluminum formwork to reduce the tail gas treatment pressure and the amount of coating used.

[0028] (6) By the cooperation of the metal detector and the high-pressure purging structure, the residual amount of shot peening is further reduced (the previous multiple means have achieved the loosening of shot peening, through high-pressure purging and shaking), and at the same time, the cooling of the aluminum formwork is achieved.

[0029] (7) Compact structure and small floor area.

[0030] (8) The cleaning effect is good, and at least five cleanings are carried out: one is the cleaning by the shot peener of the shot peening device, the second is the cleaning by the vertical purging structure of the shot peening device, the third is the cleaning by the spray swing brush device, the fourth is the cleaning by the hot air of the hot air drying device (including the hot air of the hot air supply device and the recycled hot air), and the fifth is the cleaning by the high-pressure purging structure of the hot air drying device (while purging the shot peening on the aluminum formwork, the cleaning of the aluminum formwork itself is also achieved).

[0031] In short, surface cleaning and spraying are achieved simultaneously, and the surface cleaning effect is good, the efficiency is improved, and there is no residue of shot peening. Brief Description of the Drawings

[0032] Figure 1 is a schematic structural diagram of the aluminum formwork in the embodiment of the present invention; Figure 2 is a schematic structural diagram of the transmission hanger for transporting multiple aluminum formworks; Figure 3 is a schematic structural diagram of the transmission hanger for transporting one aluminum formwork; Figure 4 is a schematic structural diagram of the recycling system of the aluminum formwork; Figure 5 is a flowchart of the recycling method of the aluminum formwork.

[0033] In the figure: 1 transmission hanger, 2 shot peening device, 3 spray swing brush device, 4 hot air drying device, 5 spraying device, 6 baking device, 7 hot air supply device, 8 cyclone separator, 9 dust removal device, 10 first air hood; 11 feeding and discharging section, 12 first outer straight section, 13 first inner straight section, 14 second inner straight section, 15 second outer straight section; 21 Shot blasting bin, 22 Third air shroud, 23 Feed bin, 24 Screw feeding structure, 25 Vertical purging structure; 31 Cleaning bin, 32 Cleaning structure; 41 Hot air bin, 42 Partition board, 43 Second air shroud, 44 First hot air drying structure, 45 Second hot air drying structure, 46 Metal detector, 47 High-pressure purging structure. Detailed implementation manners

[0034] To make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] Embodiment 1 Refer to Figure 4 , Embodiment 1 provides a recycling system for aluminum formwork, which is mainly for aluminum formwork that does not need to be repaired. The system includes a transfer hanging rack 1, a spraying device 5, a baking device 6, a hot air supply device 7, a cyclone separator 8, a dust removal device 9, a shot blasting device 2, a spray and brush device 3, a hot air drying device 4, etc. The shot blasting device 2, the spray and brush device 3, the hot air drying device 4, the spraying device 5 and the baking device 6 are sequentially arranged along the conveying direction of the transfer hanging rack 1. The transfer hanging rack 1 is of a ring structure, and a plurality of iron chains (free hanging) are arranged side by side along its conveying direction. One or more aluminum formworks are suspended on one or more iron chains through hooks (such as Figure 2 or as shown in FIG. 3). In most cases (a prerequisite for this patent), multiple aluminum formworks are suspended on two iron chains at intervals up and down; specifically, the top aluminum formwork is suspended on two iron chains through two hooks, and adjacent two aluminum formworks are suspended and connected through two hooks.

[0036] Among them, the transfer hanging rack 1 is distributed in a concave shape, and it includes a feeding and discharging section 11, a first outer straight section 12, a first inner straight section 13, a second inner straight section 14 and a second outer straight section 15 that are connected in sequence at the head and tail. The feeding and discharging section 11 is located at the front end and is arc-shaped, and a placing table or a conveying device, etc. is arranged in front of it. The first outer straight section 12, the first inner straight section 13, the second inner straight section 14 and the second outer straight section 15 are all arranged along the front and back direction. The first outer straight section 12 and the first inner straight section 13, between the first inner straight section 13 and the second inner straight section 14, and between the second inner straight section 14 and the second outer straight section 15 are all connected through arc sections. The outer straight section is longer than the corresponding inner straight section on the corresponding side.

[0037] Among them, the baking device 6 is a bin structure arranged in the front-back direction, with an open front end, a first air hood 10 provided at the front end of the top, and its hot air inlet is connected to the hot air supply device 7 (directly connected in this patent). Among them, the rear parts of the second inner straight section 14 and the second outer straight section 15 are both located inside the baking device 6, arranged side by side left and right, and inclined upward from front to back (the inclination angle is preferably greater than 15°). The front part of the second outer straight section 15 serves as a cooling section.

[0038] Among them, the shot blasting device 2 and the spray brush device 3 are sequentially arranged at the front part of the first outer straight section 12 from front to back. The shot blasting device 2 includes a shot blasting bin 21, a spiral material collecting structure, a feed bin 23, a spiral feeding structure 24, a vertical purging structure 25, a lifting structure, and two third air hoods 22, etc. The transfer hanger 1 passes through the shot blasting bin 21. The shot blasting bin 21 is arranged in the front-back direction, with strip-shaped openings for the transfer hanger 1 to pass through provided at its front and rear ends in the vertical direction, and a plurality of shot blasters are arranged inside. Two first soft sealing plates (vertically arranged, specifically rubber plates for sealing) are provided on the left and right sides of the strip-shaped opening. The two first soft sealing plates are respectively located on the left and right sides of the transfer hanger 1, and a plurality of slits (arranged in the left-right direction) are provided side by side up and down at the end close to the transfer hanger 1 (the other end is fixed to the shot blasting bin 21). The two third air hoods 22 are respectively provided at the front and rear ends of the top of the shot blasting bin 21. The spiral material collecting structure is arranged at the bottom of the shot blasting bin 21 and arranged in the front-back direction. The feed bin 23 is provided directly above the middle of the shot blasting bin 21, with a pneumatic separation and filtration structure (a conventional structure for separating dust and large particles) arranged inside, connected to the shot blasters inside the shot blasting bin 21 through a pipeline (vertically arranged), with a feeding and air inlet provided on its front or rear side, and a pneumatic separation outlet (for outputting dust and small-particle shot) provided on the other side. The spiral feeding structure 24 is arranged at the top of the feed bin 23, arranged in the left-right direction, and a strip-shaped discharge port is provided at its bottom. The vertical purging structure 25 is arranged at the rear part of the top of the shot blasting bin 21, located directly above the transfer hanger 1, purging downward, and used for purging the metal shot and dust on the surface of the aluminum formwork. The lifting structure is located on the left or right side of the shot blasting bin 21, arranged between the spiral material collecting structure and the spiral feeding structure 24, and arranged vertically. The pneumatic separation outlet and the third air hood 22 are connected to the cyclone separator 8 as dust outlets.

[0039] Among them, the spray brush device 3 is located in the front side or adjacent front of the hot air drying device 4 (to reduce water droplets from falling), and it includes a water circulation structure, a cleaning bin 31, a water tank, and two sets of cleaning structures 32, etc. The cleaning bin 31 is arranged along the front-back direction, and strip-shaped openings (vertically arranged) for the transmission hanging rack 1 to pass through are provided at both the front and rear ends thereof along the vertical direction. The transmission hanging rack 1 passes through the cleaning bin 31. Two second soft sealing plates (vertically arranged, specifically rubber plates for sealing) are provided on the left and right sides of the strip-shaped opening. The two second soft sealing plates are respectively located on the left and right sides of the transmission hanging rack 1, and multiple slits (arranged along the left-right direction) are provided side by side up and down at one end (the other end is fixed to the cleaning bin 31) close to the transmission hanging rack 1. The water tank is arranged at the bottom of the cleaning bin 31 for collecting water. The two sets of cleaning structures 32 are arranged side by side left and right in the cleaning bin 31, and are respectively located on the left and right sides of the transmission hanging rack 1, and can move towards each other synchronously. The cleaning structure 32 includes a plurality of swinging brushes (vertically arranged) arranged side by side front and back and spray heads for spraying water towards the swinging brushes beside the swinging brushes, etc. It is a conventional structure, and its specific description can refer to the description of the car cleaning structure. The water circulation structure is used for purifying water, and the water tank, the water circulation structure, and the spray heads are sequentially connected through pipelines.

[0040] Among them, the hot air drying device 4 includes a hot air bin 41, a partition 42, a second air hood 43, a first hot air drying structure 44, a second hot air drying structure 45, a filter screen, an exhaust gas outlet, a metal detector 46, a high-pressure purging structure 47, etc. The hot air bin 41 is arranged along the front-back direction and its front end is open. The transmission hanging rack 1 is arranged at the top inside the hot air bin 41. The rear parts of the first outer straight section 12 and the first inner straight section 13 are both located inside the hot air bin 41, and they are arranged side by side left and right, and are arranged obliquely upward from front to back (the inclination angle is preferably greater than 15°). The partition 42 is arranged in the middle of the hot air bin 41, and it divides the hot air bin 41 into two sub-bin bodies that are arranged side by side left and right and communicate (through the gap at the rear end). It is arranged along the front-back direction, is located between the first outer straight section 12 and the first inner straight section 13, and there is a gap for the transmission hanging rack 1 to pass through between its rear end and the rear side of the hot air bin 41. The second air hood 43 is arranged at the front end of the top of the hot air bin 41. The first hot air drying structure 44 is arranged on the left or right side inside the hot air bin 41, and is located at the rear part of the first outer straight section 12. The second hot air drying structure 45 is arranged on the other side (right or left) inside the hot air bin 41, and is located at the rear part of the first inner straight section 13. Both the first hot air drying structure 44 and the second hot air drying structure 45 include two blowing units arranged side by side left and right. The two blowing units are respectively located on the left and right sides of the transmission hanging rack 1, and are respectively arranged on the corresponding side (left or right) of the side wall (left or right) of the hot air bin 41 and the partition 42. They both include a plurality of strip-shaped blowing nozzles arranged side by side front and back. The strip-shaped blowing nozzles are arranged towards the transmission hanging rack 1 (towards the left or right), are perpendicular to the transmission hanging rack 1, and are connected to the hot air supply device 7 (connected to the first hot air drying structure 44) or the first air hood 10 (connected to the second hot air drying structure 45) through a pipeline with a blower. The filter screen is arranged at the bottom of the hot air bin 41; the metal shot of the shot blasting device 2 cannot pass through the filter screen. The exhaust gas outlet is arranged at the bottom of the hot air bin 41, and is located below the filter screen. The metal detector 46 and the high-pressure purging structure 47 are both arranged inside the hot air bin 41, and are both arranged at the first inner straight section 13. The second hot air drying structure 45, the metal detector 46, and the high-pressure purging structure 47 are arranged in sequence from front to back. The metal detector 46 can allow the transmission hanging rack 1 to pass through and is used to detect the iron material shot, and the high-pressure purging structure 47 is used to purge the aluminum formwork detected with metal shot (made of iron material), and it includes two nozzle units. The two nozzle units are respectively located on the left and right sides of the transmission hanging rack 1, and are respectively arranged on the corresponding side (right or left) of the side wall (left or right) of the hot air bin 41 and the partition 42. They are arranged towards the transmission hanging rack 1 (arranged along the left-right direction), can move up and down (driven by the corresponding structure), their air pressure can make the transmission hanging rack 1 shake, and they do not act simultaneously to make the transmission hanging rack 1 shake.

[0041] Among them, the spraying device 5 is located at the front part of the first inner straight section 13, and it is a conventional structure and can be one or more. A plurality of spraying devices 5 are arranged side by side front and back.

[0042] Among them, the second air hood 43, the exhaust gas outlet of the spraying device 5, the exhaust gas outlet of the hot air drying device 4, and the dust outlet of the shot blasting device 2 are all connected to the cyclone separator 8 through a pipeline with a fan. The dust removal device 9 is connected to the cyclone separator 8 through a pipeline; specifically, the dust removal device 9 can be a bag filter. Specifically, the cyclone separator 8 and the dust removal device 9 are arranged side by side in the front and back, and are arranged between the front part of the first inner straight section 13 and the front part of the second inner straight section 14.

[0043] Embodiment 2 Embodiment 2 provides a recycling system for aluminum formwork, whose structure is basically the same as that of Embodiment 1, the difference being that: in the embodiment of the present invention, the bottoms of the baking device 6 and the hot air bin 41 are both arranged obliquely upward from front to back, and the rear part is suspended. The hot air supply device 7 (relatively large, specifically can be a biomass hot air device) is arranged directly below the rear part of the baking device 6. The water circulation structure (relatively large) is arranged directly below the rear part of the hot air bin 41. The above structure makes the structure of the whole system more compact.

[0044] Embodiment 3 Embodiment 3 provides a recycling system for aluminum formwork, whose structure is basically the same as that of Embodiment 1, the difference being that: in the embodiment of the present invention, the lengths of the first outer straight section 12 and the second outer straight section 15 are 35 m, and the lengths of the first inner straight section 13 and the second inner straight section 14 are 32 m. The inclination angles of the rear parts of the first outer straight section 12, the first inner straight section 13, the second inner straight section 14, and the second outer straight section 15 are 22°. The cleaning structure 32 includes three swing brushes arranged side by side in the front and back. The blowing unit of the first hot air drying structure 44 includes 4 strip-shaped blowing nozzles arranged side by side in the front and back. The blowing unit of the second hot air drying structure 45 includes 2 strip-shaped blowing nozzles arranged side by side in the front and back. The number of spraying devices 5 is two.

[0045] Embodiment 4 See Figure 5 , Embodiment 4 provides a recycling method for aluminum formwork, using the recycling system for aluminum formwork disclosed in Embodiment 1, 2 or 3, and the method includes: S101: Manually at the feeding and discharging section 11, one or more aluminum formworks are hooked on the transmission hanging rack 1 through one or more hooks, and the hanging method is as Figure 2 and 3 shown.

[0046] S102: The aluminum formwork is surface cleaned by the shot blasting device 2.

[0047] S103: The aluminum formwork is spray cleaned and the shot blasting is removed by the spray brush device 3.

[0048] S104: The aluminum formwork is dried, purged and cleaned, and shot blasting is removed through the hot air drying device 4. Step S104 further includes: detecting the aluminum formwork with a metal detector 46 and controlling the high-pressure purging structure 47 to purge the aluminum formwork detected with metal shot and simultaneously cool the aluminum formwork. The purging of the high-pressure purging structure 47 can make the aluminum formwork shake. The two nozzle units of the high-pressure purging structure 47 do not act simultaneously. For example, one nozzle unit acts 1-2 s later than the other nozzle unit.

[0049] S105: The aluminum formwork is sprayed through the spraying device 5.

[0050] S106: The aluminum formwork is baked through the baking device 6.

[0051] S107: Cooling is carried out at the front part of the second outer straight section 15, and the operator removes the aluminum formwork from the transfer hanging rack 1 at the loading and unloading section 11.

[0052] Among them, the hot air supply device 7 supplies hot air to the first hot air drying structure 44 and the baking device 6. The hot air exhausted from the baking device 6 is sent to the second hot air drying structure 45 for use. The transfer hanging rack 1 can first incline backward and upward and then incline forward and downward both in the hot air drying device 4 and the baking device 6. The exhaust gas of the hot air drying device 4 (from the second air hood 43 and the tail gas outlet), the dust of the shot blasting device 2 (from the air separation outlet and the two third air hoods 22), and the tail gas of the spraying device 5 are all sent to the cyclone separator 8 for unified treatment.

[0053] The product is inspected. Inspection is carried out using a metal detector (for detecting iron materials) and combined with visual inspection. The aluminum formwork is mainly an aluminum frame aluminum formwork (as shown, forming a wall surface, having multiple reinforcing ribs, and multiple holes are provided on the four side frames). The results are shown in Table 1: Figure 1 shown, forming a wall surface, having multiple reinforcing ribs, and multiple holes are provided on the four side frames). The results are shown in Table 1: Table 1

[0054] As can be seen from Table 1, it is basically considered that there is no shot blasting residue (even if the shot blasting machine is used alone for treatment, then placing, compressed air purging (manual use of a spray gun), and transportation (shot blasting will fall off during the process), the number of shot blasting residue parts is much higher than that of this patent, usually greater than 5‰). The coating on the surface of the aluminum formwork after the treatment of this patent is uniform.

[0055] Among them, the "first", "second", and "third" in this patent only play a differentiating role and have no other special meaning.

[0056] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. Recycling system for aluminum formwork, comprising a transfer hanger (1), a spraying device (5), a baking device (6), a hot air supply device (7), a cyclone separator (8) and a dust removal device (9), wherein the hot air supply device (7) is connected to the baking device (6), and the dust removal device (9) is connected to the cyclone separator (8) through a pipeline; characterized in that, The system further includes a shot blasting device (2), a spray rolling brush device (3), and a hot air drying device (4); the transfer hanger (1) is distributed in a concave shape, and includes a feeding and discharging section (11), a first outer straight section (12), a first inner straight section (13), a second inner straight section (14), and a second outer straight section (15) that are sequentially connected end to end. The feeding and discharging section (11) is located at the front end, and the first outer straight section (12), the first inner straight section (13), the second inner straight section (14), and the second outer straight section (15) are all arranged in the front-rear direction. The baking device (6) is a bin structure arranged in the front-rear direction, with its front end open, and a first air hood (10) is provided at the front end of its top; the rear parts of the second inner straight section (14) and the second outer straight section (15) are both located in the baking device (6), and they are arranged side by side left and right, and are arranged obliquely upward from front to back. The shot blasting device (2) and the spray rolling brush device (3) are sequentially arranged at the front of the first outer straight section (12) from front to back; the hot air drying device (4) is a bin structure arranged in the front-rear direction, with its front end open, and a second air hood (43) is provided at the front end of its top. A first hot air drying structure (44) is provided inside it and at the rear of the first outer straight section (12), and a second hot air drying structure (45) is provided inside it and at the rear of the first inner straight section (13); the first hot air drying structure (44) and the second hot air drying structure (45) are respectively connected to the hot air supply device (7) and the first air hood (10) through pipelines with blowers; the rear parts of the first outer straight section (12) and the first inner straight section (13) are both located in the hot air drying device (4), and they are arranged side by side left and right, and are arranged obliquely upward from front to back; the spray rolling brush device (3) is located on the front side or adjacent front of the hot air drying device (4). The spraying device (5) is located at the front of the first inner straight section (13); the second air hood (43), the exhaust gas outlet of the spraying device (5), the exhaust gas outlet of the hot air drying device (4), and the dust outlet of the shot blasting device (2) are all connected to the cyclone separator (8) through pipelines with blowers.

2. The recycling system of the aluminum formwork according to claim 1, characterized in that The shot blasting device (2) includes a shot blasting chamber (21) arranged in the front-rear direction, two third air hoods (22) at the front and rear ends of the top of the shot blasting chamber (21), a spiral material collecting structure arranged at the bottom of the shot blasting chamber (21) in the front-rear direction, a feed bin (23) directly above the middle of the shot blasting chamber (21), a spiral feeding structure (24) arranged at the top of the feed bin (23) in the left-right direction, a vertical purging structure (25) at the rear of the top of the shot blasting chamber (21), and a lifting structure arranged on the left or right side of the shot blasting chamber (21) between the spiral material collecting structure and the spiral feeding structure (24); the transfer hanger (1) passes through the shot blasting chamber (21), strip-shaped openings for the transfer hanger (1) to pass through are arranged vertically at the front and rear ends of the shot blasting chamber (21), two first soft sealing plates are arranged on the left and right sides of the strip-shaped openings, the two first soft sealing plates are respectively located on the left and right sides of the transfer hanger (1), and multiple slits are arranged side by side up and down at the end of the two first soft sealing plates close to the transfer hanger (1); a strip-shaped discharge port is arranged at the bottom of the spiral feeding structure (24); the feed bin (23) is connected to a shot blasting machine in the shot blasting chamber (21) through a pipeline, the vertical purging structure (25) is located directly above the transfer hanger (1) and purges downward; a feeding and air inlet is arranged on the front or rear side of the feed bin (23), and an air separation outlet is arranged on the other side; the air separation outlet and the third air hood (22) are connected to a cyclone separator (8) as dust outlets.

3. The recycling system of the aluminum formwork according to claim 2, wherein, The spray rolling brush device (3) includes a water circulation structure, a cleaning chamber (31) arranged in the front-rear direction, a water tank at the bottom of the cleaning chamber (31), and two groups of cleaning structures (32) arranged side by side in the left-right direction in the cleaning chamber (31), the transfer hanger (1) passes through the cleaning chamber (21), strip-shaped openings for the transfer hanger (1) to pass through are arranged vertically at the front and rear ends of the cleaning chamber (21), two second soft sealing plates are arranged on the left and right sides of the strip-shaped openings, the two second soft sealing plates are respectively located on the left and right sides of the transfer hanger (1), and multiple slits are arranged side by side up and down at the end of the two second soft sealing plates close to the transfer hanger (1); the two groups of cleaning structures (32) are respectively located on the left and right sides of the transfer hanger (1), the cleaning structure (32) includes a plurality of swinging rolling brushes arranged side by side in the front-rear direction and nozzles that spray water towards the swinging rolling brushes beside the swinging rolling brushes, the water circulation structure is used to purify water, and the water tank, the water circulation structure and the nozzles are sequentially connected through pipelines.

4. The recycling system of the aluminum formwork according to claim 3, characterized in that, The hot air drying device (4) includes a hot air bin (41) arranged in the front-rear direction, a partition (42) in the middle of the hot air bin (41), a second air hood (43) at the front end of the top of the hot air bin (41), a first hot air drying structure (44) in the hot air bin (41) and at the rear of the first outer straight segment (12), a second hot air drying structure (45) in the hot air bin (41) and at the rear of the first inner straight segment (13), a filter screen at the inner bottom of the hot air bin (41), and an exhaust gas outlet at the bottom of the hot air bin (41) and below the filter screen; the front end of the hot air bin (41) is open; the partition (42) is arranged in the front-rear direction, located between the first outer straight segment (12) and the first inner straight segment (13), and there is a gap for the transmission hanger (1) to pass between its rear end and the rear side of the hot air bin (41); the transmission hanger (1) is arranged at the inner top of the hot air bin (41), and the spray brush device (3) is located at the front side or adjacent front of the hot air bin (41); both the first hot air drying structure (44) and the second hot air drying structure (45) include two blowing units arranged side by side left and right; the two blowing units are respectively located on the left and right sides of the transmission hanger (1), are respectively arranged on the corresponding sides of the side wall of the hot air bin (41) and the partition (42), and both include a plurality of strip-shaped blowing nozzles arranged front and rear; the strip-shaped blowing nozzles are arranged towards the transmission hanger (1), are perpendicular to the transmission hanger (1), and are connected to the hot air supply device (7) or the first air hood (10) through a pipeline with a blower; the metal shot of the shot blasting device (2) cannot pass through the filter screen.

5. The recycling system of the aluminum formwork according to claim 4, characterized in that, The hot air drying device (4) further includes a metal detector (46) and a high-pressure purging structure (47); both the metal detector (46) and the high-pressure purging structure (47) are arranged in the hot air bin (41), and are both arranged at the first inner straight segment (13); the second hot air drying structure (45), the metal detector (46), and the high-pressure purging structure (47) are arranged in sequence from front to back. The metal detector (46) can allow the transmission hanger (1) to pass through, and the high-pressure purging structure (47) is used to purge the aluminum formwork detected with metal shot and includes two nozzle units; the two nozzle units are respectively located on the left and right sides of the transmission hanger (1), are respectively arranged on the corresponding sides of the side wall of the hot air bin (41) and the partition (42), are arranged towards the transmission hanger (1), can move up and down, and their air pressure can make the transmission hanger (1) shake, and they do not act simultaneously.

6. The recycling system of the aluminum formwork according to claim 5, characterized in that, The bottoms of the baking device (6) and the hot air bin (41) are both arranged obliquely upward from front to back, and their rear parts are suspended; the hot air supply device (7) is arranged directly below the rear part of the baking device (6), and the water circulation structure is arranged directly below the rear part of the hot air bin (41).

7. The recycling system of the aluminum formwork according to claim 1, characterized in that, The cyclone separator (8) and the dust removal device (9) are arranged side by side front and back, and are arranged between the front part of the first inner straight segment (13) and the front part of the second inner straight segment (14).

8. A recycling method of the recycling system of the aluminum formwork according to any one of claims 1-7, characterized in that, The method includes: S101: Manually at the loading and unloading section (11), hook one or more aluminum formworks on the transmission hanger (1) through one or more hooks. S102: The aluminum formwork is surface-cleaned by the shot blasting device (2); S103: The aluminum formwork is spray-cleaned and the shot blasting is removed by the spray-rolling brush device (3); S104: The aluminum formwork is dried, purged and the shot blasting is removed by the hot air drying device (4); S105: The aluminum formwork is sprayed by the spraying device (5); S106: The aluminum formwork is baked by the baking device (6); S107: Workers remove the aluminum formwork from the transfer hanging rack (1) at the loading and unloading section (11); Among them, the hot air supply device (7) supplies hot air to the first hot air drying structure (44) and the baking device (6). The hot air exhausted from the baking device (6) is sent to the second hot air drying structure (45) for use. The transfer hanging rack (1) can first incline obliquely backward and upward and then obliquely forward and downward in both the hot air drying device (4) and the baking device (6). The exhaust gas of the hot air drying device (4), the dust of the shot blasting device (2) and the tail gas of the spraying device (5) are all sent to the cyclone separator (8) for unified treatment.

9. The recovery method according to claim 8, wherein Step S104 further includes: using a metal detector (46) to detect the aluminum formwork and controlling the high-pressure purging structure (47) to purge the aluminum formwork detected with metal shot blasting and simultaneously cool the aluminum formwork. The purging of the high-pressure purging structure (47) can make the aluminum formwork shake; the two nozzle units do not act simultaneously.

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