A paint recycling system for door frame paint spraying and a recycling method thereof

Abstract

The application provides a paint recycling system for door frame paint spraying and a recycling method thereof, which comprises a paint spraying room, a plurality of negative pressure suction pipes are arranged in parallel in the paint spraying room, a plurality of suction holes are arranged on the side wall of the negative pressure suction pipe, a water curtain wall is arranged at the rear side of the plurality of negative pressure suction pipes in the paint spraying room, a plurality of water outlet holes are arranged on the top of the water curtain wall, a water tank is arranged at the bottom of the paint spraying room, a reserved box and a treatment box are arranged at the bottom of the water tank, a paint box is fixed to the left side of the reserved box, a corner pipe is arranged between the side slot of the water tank and the reserved box, and a plurality of paint rollers are rotatably connected in the corner pipe. The system can adsorb most of the paint through negative pressure adsorption and the form of the paint roller, the paint can be directly recycled and reused through simple treatment, a small amount of paint can be separated and treated through a paint mist condensation agent, and metal debris in the paint and water can be effectively removed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of door frame paint spraying processing, and particularly relates to a door frame paint spraying paint recycling system and a recycling method thereof. BACKGROUND

[0002] The processing process of a door frame generally comprises cutting, stamping, welding, polishing, paint spraying, drying and assembling steps. The paint spraying of the door frame is mostly carried out in a paint spraying room. In order to enable the sprayed paint to completely cover the surface of the door frame, a large area is generally sprayed to cover the spraying position. Therefore, the utilization rate of the sprayed paint is low, and the remaining paint is left in the air during the spraying process.

[0003] At present, the recycling of the paint is mostly in the form of a water curtain. The excess paint is captured by the water curtain, flows into a processing tank with water, and is separated from the water after a paint mist coagulant is added into the tank. This method can cause the paint to be damaged, belongs to hazardous waste, and cannot be directly recycled and utilized. In addition, the metal powder adhered to the door frame after polishing can be mixed into the flowing paint, which is not easy to process. SUMMARY

[0004] In view of the above problems, the present application provides a door frame paint spraying paint recycling system and a recycling method thereof. The system adsorbs most of the paint in the form of negative pressure adsorption and paint roller. This part of the paint can be directly recycled and utilized after simple treatment. A small amount of paint is treated by a paint mist coagulant, and the metal powder in the paint and water can be effectively removed.

[0005] To solve the above problems, the technical scheme adopted by the present application is as follows:

[0006] A door frame paint spraying paint recycling system comprises a paint spraying room, a plurality of parallel negative pressure suction pipes are installed in the paint spraying room, a plurality of suction holes are arranged on the side wall of the negative pressure suction pipe, a water curtain wall is arranged on the rear side of the plurality of negative pressure suction pipes in the paint spraying room, a plurality of staggered water outlets are arranged on the top of the water curtain wall, a water tank is arranged at the bottom of the paint spraying room, a reserved tank and a processing tank are arranged at the bottom of the water tank, a paint tank is fixed to the left side of the reserved tank, an angle pipe is arranged between the side opening of the water tank and the reserved tank, a plurality of paint roller are rotatably connected in the angle pipe, an L-shaped scraper is arranged on one side of the paint roller, a paint conveying pipe is arranged at the bottom of the L-shaped scraper and connected with the paint tank, a rotating rod is rotatably connected among the paint tank, the reserved tank and the processing tank, a plurality of stirring plates are fixed to one section of the rotating rod in the three tanks, and an electromagnetic plate is embedded on the stirring plate in the paint tank and the reserved tank.

[0007] Preferably, a collecting pipe is fixedly installed on the right side of the paint spraying room, the side wall of the collecting pipe is connected with an air pipe of an external air pump, the lower end of the collecting pipe is connected with the paint tank through an oil discharging pipe, and a valve is installed at the connecting position of the collecting pipe and the oil discharging pipe.

[0008] Preferably, the plurality of negative pressure suction pipes are all arranged in a downward inclination, and the air pipe is arranged in an upward inclination and is provided with a filter screen.

[0009] Preferably, a plurality of rotating shafts are rotatably connected in the angle pipe, the paint roller is fixed on the corresponding rotating shaft, the same side end of the plurality of rotating shafts extends out of the angle pipe and is fixedly connected with a worm wheel, a first motor is installed on the side wall of the angle pipe, and the output end of the first motor is fixed with a worm that is engaged with the plurality of worm wheels.

[0010] Preferably, a second motor is installed on the side wall of the paint tank, and the output end of the second motor is drivingly connected with the left side end of the rotating rod through a pair of gears.

[0011] Preferably, an electrically conductive core is arranged at the center of the rotating rod along the length direction of the rotating rod, the plurality of electromagnetic suction plates are electrically connected with the electrically conductive core, the left side end of the electrically conductive core extends out of the rotating rod, an electric brush that is in contact with the electrically conductive core is installed on the side wall of the paint tank, and the electric brush is connected with a switch and a power supply.

[0012] Preferably, a water pump is installed on the side wall of the reserved tank, and the water outlet end of the water pump is connected with the treatment tank.

[0013] Preferably, a pump liquid mechanism that can pump the paint mist coagulant into the treatment tank is installed on the right side of the treatment tank.

[0014] Preferably, the pump liquid mechanism comprises a cylinder body that is fixedly connected on the right side of the treatment tank, a piston that is elastically installed in the cylinder body through a spring, a resisting rod that is fixed on the bottom of the piston and extends out of the cylinder body, a cam that is fixedly connected with the right side end of the rotating rod, and the lower end of the resisting rod abuts against the cam through a roller, a liquid suction pipe and a liquid outlet pipe are connected with the bottom of the cylinder body, one-way valves are installed in the liquid suction pipe and the liquid outlet pipe, and the end of the liquid outlet pipe is connected with the treatment tank.

[0015] The application further discloses a paint recycling method for door frame paint spraying, which comprises the following specific steps.

[0016] S1, the excess paint in the paint spraying room first passes through a first adsorption barrier, the air pump is started, the gas is sucked through the air pipe, the excess paint is partially sucked into the plurality of negative pressure suction pipes through the plurality of suction holes, the paint adheres to the pipe wall and flows into the collecting pipe along the downward inclined negative pressure suction pipe, when a certain amount of paint is collected, the valve is opened, and the paint is discharged into the paint tank through the oil discharging pipe.

[0017] S2, the paint not adsorbed by the negative pressure suction pipe passes through the second barrier of the water curtain wall, the paint flows into the water tank with water, the paint floats on the water surface and flows into the reserved box through the angle pipe after reaching the slot, the multiple paint rollers rolling in the angle pipe can adhere to the floating paint, and the paint is scraped down through the L-shaped scraper and is sent into the paint tank through the oil pipe, and this part of paint can be directly recycled after simple treatment;

[0018] S3, the second motor is started, a pair of gears drives the rotating rod to rotate, and multiple stirring plates are driven to rotate, the switch is opened, the power supply is always powered to the conductive core through the brush, and multiple electromagnetic suction plates are powered, the magnetic attraction of the electromagnetic suction plate can effectively adsorb the paint and the metal powder in the recycled water in the reserved box, and the paint treatment effect is improved.

[0019] S4, part of the paint is still mixed in the recycled water, the water pump is started to pump the recycled water in the reserved box into the treatment tank, and the liquid pumping mechanism intermittently pumps the paint mist coagulant, which can effectively separate the paint in the water, and the separated water can be recycled.

[0020] The beneficial effects of the present application are:

[0021] 1. By installing multiple negative pressure suction pipes, starting the air pump, and sucking air through the air pipe, the excess paint in the paint spraying room is partially sucked into the multiple negative pressure suction pipes through multiple suction holes, the paint adheres to the pipe wall and flows into the collecting pipe along the inclined downward negative pressure suction pipe, when a certain amount is collected, the valve is opened, and the paint is discharged into the paint tank through the oil discharge pipe, and this part of paint can be directly recycled after simple treatment.

[0022] 2. By setting the water curtain wall, the negative pressure suction pipe forms a double guarantee, the recovery amount of the paint is improved, the paint not adsorbed by the negative pressure suction pipe is captured by the water curtain wall and flows into the water tank, the paint floats on the water surface and flows into the reserved box through the angle pipe after reaching the slot, multiple paint rollers rolling in the angle pipe can adhere to the floating paint, and the paint is scraped down through the L-shaped scraper and is sent into the paint tank through the oil pipe, and this part of paint can be directly recycled after simple treatment.

[0023] 3. By setting the rotating rod, stirring plate and electromagnetic suction plate, the second motor is started, a pair of gears drives the rotating rod to rotate, and multiple stirring plates are driven to rotate, the switch is opened, the power supply is always powered to the conductive core through the brush, and multiple electromagnetic suction plates are powered, the electromagnetic suction plate can effectively adsorb the paint and the metal powder in the recycled water in the reserved box, and the paint treatment effect is improved.

[0024] 4. By installing the pump liquid mechanism, the rotating rod drives the cam to rotate, the resisting rod always contacts the cam under the action of the spring, and then drives the piston to move up and down, the paint mist coagulant is intermittently pumped into the treatment box, the water pump is started to pump the recycled water in the reserved box into the treatment box, and the stirring plate improves the mixing effect, the paint mist coagulant can effectively separate the paint in the water, and the separated water can be recycled. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present application;

[0026] Figure 2 It is Figure 1 It is an enlarged schematic diagram of structure at A in the middle;

[0027] Figure 3 It is a rotating rod sectional view provided by the present application;

[0028] Figure 4 It is a structural schematic diagram of the pump liquid mechanism provided by the present application;

[0029] Figure 5 It is a front view of the present application.

[0030] In the drawing: 1 paint spraying room, 2 water outlet hole, 3 negative pressure suction pipe, 4 collecting pipe, 5 air pipe, 6 valve, 7 oil discharge pipe, 8 water tank, 9 cylinder, 10 resisting rod, 11 cam, 12 rotating rod, 13 treatment box, 14 reserved box, 15 paint box, 16 stirring plate, 17 gear, 18 second motor, 19 brush, 20 angle pipe, 21 paint roller, 22 rotating shaft, 23 L-shaped scraper, 24 oil feeding pipe, 25 spring, 26 piston, 27 liquid suction pipe, 28 electromagnetic suction plate, 29 conductive core, 30 water pump, 31 first motor, 32 worm gear, 33 worm, 34 liquid outlet pipe. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the scope of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0032] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation.

[0033] Reference Figures 1-5 A paint recycling system for door frame painting, comprising a paint spraying room 1, a plurality of negative pressure suction pipes 3 are installed in the paint spraying room 1 and arranged in parallel, a plurality of suction holes are arranged on the side wall of the negative pressure suction pipe 3, a collecting pipe 4 is fixedly installed on the right side of the paint spraying room 1, a gas pipe 5 connected with an external air pump is connected with the side wall of the collecting pipe 4, the lower end of the collecting pipe 4 is connected with the paint tank 15 through the oil discharge pipe 7, the valve 6 is installed at the connecting position of the collecting pipe 4 and the oil discharge pipe 7, the plurality of negative pressure suction pipes 3 are arranged in an inclined downward manner, the gas pipe 5 is arranged in an inclined upward manner, and a filter screen is arranged in the gas pipe 5 to prevent the paint from being sucked out.

[0034] A water curtain wall is arranged at the rear side of the plurality of negative pressure suction pipes 3 in the paint spraying room 1, a plurality of water outlet holes 2 are arranged on the top of the water curtain wall in a staggered manner, a water tank 8 is arranged at the bottom of the paint spraying room 1, a reserved tank 14 and a treatment tank 13 are arranged at the bottom of the water tank 8, the paint tank 15 is fixedly arranged on the left side of the reserved tank 14, the side opening of the water tank 8 is communicated with the reserved tank 14 through the angle pipe 20, a plurality of paint roller 21 are rotatably connected in the angle pipe 20, the L-shaped scraper 23 is arranged on one side of the paint roller 21, the bottom of the L-shaped scraper 23 is provided with the oil feeding pipe 24 communicated with the paint tank 15, a plurality of rotating shafts 22 are rotatably connected in the angle pipe 20, the paint roller 21 is fixed on the corresponding rotating shaft 22, the same side end of the plurality of rotating shafts 22 extends out of the angle pipe 20 and is fixedly connected with the worm gear 32, the first motor 31 is arranged on the side wall of the angle pipe 20, the output end of the first motor 31 is fixedly connected with the worm 33 engaged with the plurality of worm gears 32, the first motor 31 is started to drive the worm 33 to rotate, and then the plurality of rotating shafts 22 are driven to rotate through the worm gears 32, the plurality of paint rollers 21 rotating in the angle pipe 20 will adhere to the floating paint, and then the paint is scraped off through the L-shaped scraper 23 and fed into the paint tank 15 through the oil feeding pipe 24.

[0035] The rotating rod 12 is rotatably connected among the paint tank 15, the reserved tank 14 and the treatment tank 13, the second motor 18 is arranged on the side wall of the paint tank 15, the output end of the second motor 18 is drivingly connected with the left end of the rotating rod 12 through a pair of gears 17, the second motor 18 is started to drive the rotating rod 12 to rotate through the pair of gears 17, and then the plurality of stirring plates 16 are driven to rotate.

[0036] The rotating rod 12 is fixed with a plurality of stirring plates 16 on a section of the three boxes, the stirring plates 16 in the paint box 15 and the reserved box 14 are embedded with electromagnetic plates 28, the center of the rotating rod 12 is provided with a conductive core 29 along the length direction, the plurality of electromagnetic plates 28 are electrically connected with the conductive core 29, the left end of the conductive core 29 extends out of the rotating rod 12, the side wall of the paint box 15 is provided with a brush 19 in contact with the conductive core 29, the brush 19 is connected with a switch and a power supply, the switch is opened, the power supply always supplies power to the conductive core 29 through the brush, and then supplies power to the plurality of electromagnetic plates 28, the magnetic attraction force of the electromagnetic plates 28 can effectively adsorb the metal powder in the paint and the recycled water in the reserved box 14.

[0037] The side wall of the reserved box 14 is provided with a water pump 30, the outlet of the water pump 30 is connected with the treatment box 13, the right side of the treatment box 13 is provided with a pump liquid mechanism for pumping the paint mist coagulant into the treatment box 13, the pump liquid mechanism comprises a cylinder 9 fixedly connected to the right side of the treatment box 13, a piston 26 elastically mounted in the cylinder 9 through a spring 25, a resisting rod 10 fixed to the bottom of the piston 26 and extending out of the cylinder 9, a cam 11 fixedly connected to the right end of the rotating rod 12, the lower end of the resisting rod 10 abutting on the cam 11 through a roller, the bottom of the cylinder 9 is connected with a liquid suction pipe 27 and a liquid outlet pipe 34, the liquid suction pipe 27 and the liquid outlet pipe 34 are both provided with a one-way valve, and the end of the liquid outlet pipe 34 is connected with the treatment box 13, the water pump 30 is started to pump the recycled water in the reserved box 14 into the treatment box 13, the pump liquid mechanism intermittently pumps the paint mist coagulant, and the paint in the water can be effectively separated out by cooperation with stirring, and the separated water can be recycled.

[0038] The door frame is hung in the paint spraying room 1, during the paint spraying process, the air pump is started to suck air through the air pipe 5, the excess paint in the paint spraying room 1 is sucked into a plurality of negative pressure suction pipes 3 through a plurality of suction holes, the paint adheres to the pipe wall and flows into the collecting pipe 4 along the inclined downward negative pressure suction pipe 3, when a certain amount is collected, the valve 6 is opened to discharge into the paint box 15 through the oil discharge pipe 7, and this part of the paint can be directly recycled after simple treatment. The paint not adsorbed by the negative pressure suction pipe 3 is captured by the water curtain wall (water flows out through a plurality of water outlets 2 arranged in a staggered manner to form a uniform water curtain), the paint flows into the water tank 8 with the water, the paint floats on the water surface and flows into the reserved box 14 through the angle pipe 20 after reaching the tank opening, the first motor 31 is started to drive the worm 33 to rotate, and the plurality of rotating shafts 22 are driven to rotate through the worm gear 32, the plurality of paint rollers 21 rolling in the angle pipe 20 adhere to the floating paint, and the paint is scraped off through the L-shaped scraper 23 and sent into the paint box 15 through the oil feeding pipe 24, and this part of the paint can also be directly recycled after simple treatment.

[0039] Start the second motor 18, through a pair of gears 17 drive rotating rod 12 rotation, and drive a plurality of stirring plate 16 rotation, open the switch, the power supply through the brush for the conductive core 29 power supply, and for a plurality of electromagnetic suction plate 28 power supply, the magnetic attraction of the electromagnetic suction plate 28 can effectively adsorb the paint and the metal powder (the door frame is stainless steel door, the metal powder is iron impurities) in the recycling water in the reserved box 14, improve the paint treatment effect. At this time, the recycling water still mixed with some paint, start the water pump 30, the recycling water in the reserved box 14 is pumped into the processing box 13, the rotating rod 12 simultaneously drive the cam 11 rotation, the resistance bar 10 always resist the cam 11 under the action of the spring 25, and then drive the piston 26 up and down, the paint mist coagulant is intermittently sucked into the cylinder 9 through the liquid suction pipe 27, and then pumped into the processing box 13 through the liquid outlet pipe 34, the stirring plate 16 improves the mixing effect, the paint mist coagulant can effectively separate the paint in the water, and the separated water can be recycled.

[0040] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A paint recovery system for painting a door frame, comprising a booth (1) for painting, characterized in that, The paint spraying room (1) is internally provided with a plurality of negative pressure suction pipes (3) arranged in parallel, the side wall of the negative pressure suction pipe (3) is provided with a plurality of suction holes, the rear side of the plurality of negative pressure suction pipes (3) in the paint spraying room (1) is provided with a water curtain wall, the top of the water curtain wall is provided with a plurality of water outlet holes (2) arranged in a staggered manner, the bottom of the paint spraying room (1) is provided with a water tank (8), the bottom of the water tank (8) is provided with a reserved box (14) and a treatment box (13), the left side of the reserved box (14) is fixedly provided with a paint tank (15), the side opening of the water tank (8) is in communication with the reserved box (14) through an angle pipe (20), a plurality of paint rollers (21) are rotatably connected in the angle pipe (20), an L-shaped scraper (23) is arranged on one side of the paint roller (21), the bottom of the L-shaped scraper (23) is provided with a paint feeding pipe (24) in communication with the paint tank (15), the paint tank (15), the reserved box (14) and the treatment box (13) are jointly rotatably connected with a rotating rod (12), a plurality of stirring plates (16) are fixedly arranged on a section of the rotating rod (12) in the three boxes, and the stirring plates (16) in the paint tank (15) and the reserved box (14) are embedded with electromagnetic suction plates (28); The right side of the paint spraying room (1) is fixedly provided with a collecting pipe (4), the side wall of the collecting pipe (4) is connected with an air pipe (5) connected with an external air pump, the lower end of the collecting pipe (4) is connected with the paint tank (15) through an oil discharge pipe (7), and the valve (6) is arranged at the connection position of the collecting pipe (4) and the oil discharge pipe (7); A plurality of rotating shafts (22) are rotatably connected in the angle pipe (20), the paint roller (21) is fixed on the corresponding rotating shaft (22), the same side end of the plurality of rotating shafts (22) extends out of the angle pipe (20) and is fixedly connected with a worm gear (32), the side wall of the angle pipe (20) is provided with a first motor (31), and the output end of the first motor (31) is fixedly provided with a worm (33) engaged with the plurality of worm gears (32); The side wall of the paint tank (15) is provided with a second motor (18), and the output end of the second motor (18) is drivingly connected with the left end of the rotating rod (12) through a pair of gears (17); The center of the rotating rod (12) is provided with a conductive core (29) along the length direction thereof, the plurality of electromagnetic suction plates (28) are electrically connected with the conductive core (29), the left end of the conductive core (29) extends out of the rotating rod (12), the side wall of the paint tank (15) is provided with an electric brush (19) in contact with the conductive core (29), and the electric brush (19) is externally connected with a switch and a power supply; The side wall of the reserved box (14) is provided with a water pump (30), and the water outlet end of the water pump (30) is connected with the treatment box (13). The right side of the processing box (13) is provided with a pump liquid mechanism for pumping the paint mist coagulant into the processing box (13), the pump liquid mechanism comprises a cylinder (9) fixedly connected to the right side of the processing box (13), a piston (26) elastically mounted in the cylinder (9) by a spring (25), a resisting rod (10) fixed to the bottom of the piston (26) and extending out of the cylinder (9), a cam (11) fixedly connected to the right end of the rotating rod (12), the lower end of the resisting rod (10) abuts against the cam (11) through a roller, and the bottom of the cylinder (9) is connected with a liquid suction pipe (27) and a liquid outlet pipe (34), the liquid suction pipe (27) and the liquid outlet pipe (34) are both provided with a one-way valve, and the end of the liquid outlet pipe (34) is connected to the processing box (13).

2. The paint recovery system for painting a door frame according to claim 1, wherein The plurality of negative pressure suction pipes (3) are arranged in a downward inclination, and the air pipe (5) is arranged in an upward inclination.

3. A recovery method based on the paint recovery system for a door frame paint spraying according to any one of claims 1-2, characterized in that, The method comprises the following specific steps: S1, the excess paint in the paint spraying room (1) first passes through a first adsorption barrier, a gas pump is started, air is sucked through the air pipe (5), part of the excess paint is sucked into the plurality of negative pressure suction pipes (3) through a plurality of suction holes, the paint adheres to the pipe wall and flows into the collecting pipe (4) along the downward inclined negative pressure suction pipe (3), when a certain amount is collected, the valve (6) is opened, and the paint is discharged into the paint tank (15) through the oil discharge pipe (7); S2, the paint not adsorbed by the negative pressure suction pipe (3) passes through a second barrier of the water curtain wall, the paint flows into the water tank (8) along with the water, the paint floats on the water surface and flows into the reserved tank (14) through the angle pipe (20) after reaching the tank opening, the plurality of paint rollers (21) rolling in the angle pipe (20) adhere to the floating paint, and the paint is scraped off through the L-shaped scraper (23) and sent into the paint tank (15) through the oil feeding pipe (24), this part of the paint can also be directly recycled after simple treatment; S3, the second motor (18) is started, the rotating rod (12) is driven to rotate through a pair of gears (17), the plurality of stirring plates (16) are driven to rotate, the switch is opened, the power supply always supplies power to the conductive core (29) through the brush, and the plurality of electromagnetic suction plates (28) are powered, the magnetic attraction force of the electromagnetic suction plate (28) can effectively adsorb the paint and the metal powder in the recycled water in the reserved tank (14), and the paint treatment effect is improved; S4, part of the paint is still mixed in the recycled water, the water pump (30) is started to pump the recycled water in the reserved tank (14) into the processing box (13), the pump liquid mechanism intermittently pumps the paint mist coagulant, and the paint in the water can be effectively separated out by cooperation of the stirring, and the separated water can be recycled.

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