An environmentally friendly method for removing tree oil from vehicle covering parts and a special cleaning tool

Abstract

The present invention discloses a method for removing tree oil by a purely physical method and a special cleaning tool. The method utilizes the characteristics of different thermal expansion coefficients of different materials, cools the vehicle cover attached with tree oil, thereby destroying the close combination of the two, and mechanically strips the low-temperature tree oil in time, thereby removing the tree oil. Specifically, the method utilizes the vortex tube refrigeration principle, the vane pump motor principle and the Bernoulli principle, and designs a special tool for cleaning tree oil. Compressed air is used as the refrigerant and motor power source of the vortex tube, and clean water is used as the cleaning medium and auxiliary refrigerant. The vehicle cover attached with tree oil is cooled and a small amount of clean water is sprayed in synchronously. The scraper driven by the motor strips the tree oil that has become hard and brittle after cooling. The special cleaning tool is moved at an appropriate speed to gradually and easily remove all the tree oil.

Description

Technical Field

[0001] The invention relates to an environmentally friendly method for removing tree oil from a vehicle covering part and a special cleaning tool, and in particular to a car beautification method for removing tree oil from the surface of a vehicle covering part and the technical field of a special cleaning tool. Background Art

[0002] Many trees secrete tree oil, a viscous organic resin, during their active growth period when the temperature is high. When the tree secretes too much and the tree itself does not have enough storage space, the excess will be excreted from the tree. In addition, when the branches of the tree that secretes tree oil are eaten by insects, pruned or otherwise injured, the tree oil will also be excreted from the tree through the wound. In the above situation, once we park our vehicle near or under the tree, tree oil drops will often drip or be blown off by the wind and adhere to the vehicle's covering parts, seriously affecting the appearance of the vehicle; because tree oil contains organic solvent components, if it is not cleaned for a long time, it will corrode and dissolve the paint surface, causing permanent damage to the covering parts (aesthetics and anti-corrosion ability). Because tree oil has strong viscosity and strong affinity with the paint surface of the car's covering parts, it is very difficult to remove it using conventional cleaning methods and generally must be handled by a professional car wash organization. Generally, there are two methods, mechanical polishing or chemical (mainly chemical solvent) cleaning. The problems with these methods are: (i) Mechanical polishing will inevitably reduce the thickness of the paint surface of the covering parts, resulting in a decrease in the anti-corrosion ability; ② If the entire vehicle is not polished, the brightness of the covering parts of the entire vehicle will inevitably be inconsistent, affecting the appearance of the vehicle; (ii) Chemical method: ① The cleaning process is long, the materials are expensive, and the cost is high; ② Chemicals are highly corrosive and damage the brightness of the paint surface, directly affecting the appearance of the vehicle. In severe cases, the paint surface will be corroded and the anti-corrosion performance will be seriously reduced. Improper operation may also cause harm to people; ③ Most of the chemicals used as cleaning agents are flammable organic solvents. Their use and storage pose a fire hazard; ④ A large amount of chemicals are discharged into the environment, causing serious pollution.

[0003] After a long period of careful observation and special verification with many special car washing institutions, the inventor found that after the northern part of my country enters the lower temperature season, the tree oil attached to the vehicle covering parts can be easily removed after routine cleaning, and there is no need to spend a lot of time and money on special cleaning. Summary of the invention

[0004] In view of the above problems, the present invention provides an environmentally friendly method and special cleaning tool for removing tree oil by a purely physical method based on observation and analysis of reality. It utilizes the different thermal expansion coefficients of different materials, cools the vehicle cover with tree oil attached, destroys the close combination of the two, and mechanically strips the low-temperature tree oil in time, thereby removing the tree oil on the vehicle cover. Specifically, the present invention utilizes the vortex tube refrigeration principle and the working principle of the Bernoulli principle vane pump motor to design a special tool for cleaning tree oil. It uses compressed air as the refrigerant of the vortex tube and the power source of the motor, and clean water as the washing medium and auxiliary refrigerant. When cooling the vehicle cover with tree oil attached, a small amount of clean water is sprayed simultaneously, and the flexible silicone scraper on the scraper driven by the motor strips and cleans the tree oil that has become hard and brittle after cooling. The special cleaning tool is moved at an appropriate speed to gradually and easily remove the tree oil and restore the appearance of the vehicle.

[0005] Specific method: The present invention is a purely physical cleaning method. The vortex tube on the special oil cleaning tool divides the compressed air from the air compressor into cold and hot paths (vortex tube refrigeration principle). The cold air from the cold nozzle locally cools the vehicle cover with oil attached (specifically: when the high-speed cold air is ejected from the cold nozzle, a small amount of clean water is sucked in by the Bernoulli principle to form a cold water mist to cool the local area of ​​the cover and the oil on it. The water droplets in the cold water mist are adsorbed by the cover to form a cold water film). Due to the thin wall of the cover and the small volume of the oil (small heat capacity), it is quickly cooled by the cold water mist, and the oil changes from sticky to hard and brittle. Due to the differences in thermal conductivity, heat capacity and thermal expansion coefficient, the two must have different thermal expansion and contraction paces during the temperature change process, and their close combination can be easily broken. The oil directly falls off the paint surface or is easily peeled off by the motor-driven scraper and is taken away from the cover by the water flow. Move the special tool at an appropriate speed (to ensure that the oil is hard and brittle at low temperature) to clean the oil on the vehicle cover (Note: the hot air ejected from the vortex tube hot nozzle is directly discharged into the atmosphere).

[0006] Compared with the existing conventional tree oil chemical cleaning method, the present invention adopts a purely physical method, uses compressed air and clean water as the cooling medium and the washing medium, and uses a simple air motor as the mechanical power of the cleaning machine. Therefore, it has the significant advantages of small equipment investment, low material consumption, fast operation, no pollution, no corrosion, no fire hazard, no electric shock hazard, safe and reliable (the motor is the main cleaning power, no safety hazard), and low operating cost. If the hot and cold nozzles of the vortex tube are interchanged, hot cleaning of vehicle covers can also be achieved, expanding the cleaning business. Therefore, the present invention has high social value and economic value, and has high market promotion value.

[0007] Specific structure and connection

[0008] 1. Technical route and overall structural composition of the present invention

[0009] ①Technical route

[0010] The compressed air generated by the air compressor is output in two ways. One way drives the motor and the scraper to rotate. The scraper blade on the scraper contacts the cover to scrape off the oil attached to it. The other way drives the vortex tube to generate cold air and sucks clean water from the water tank to form cold water mist, which locally cools the vehicle cover with oil attached. The oil quickly changes from sticky and soft to hard and brittle. Due to the difference in thermal conductivity, heat capacity and thermal expansion coefficient between the two, the thermal expansion and contraction are not synchronized with the temperature change. The oil directly falls off the paint surface or is peeled off by the rotating scraper and carried away from the cover by the water flow. The special mobile tool can realize the cleaning of the oil on the vehicle cover.

[0011] ② Overall structural composition

[0012] The overall structure of the technical solution of the present invention is composed of an air compressor, an air pipe and a special cleaning tool. The air compressor provides compressed air as a refrigerant, power and cleaning medium to the special cleaning tool through an air hose (the air compressor and the air hose are general conventional structures and will not be described in detail).

[0013] 2. Specific structure and connection of special cleaning tools

[0014] ①Specific structure

[0015] It is mainly composed of a machine base, a motor, an air hose, a scraper, a vortex tube, a water tank and a water spray pipe. The machine base consists of a handle, a motor control valve, a vortex tube control valve, a shell, a hollow shaft, a water tank mounting boss and other structures. There is an air inlet in the center of the handle and an air manifold at the end. There are motor air inlet and exhaust holes on the side wall of the shell on the handle side (structural requirements of the vane air motor, the arrangement of the two will not be repeated), and symmetrically distributed fixing screw holes are on the end face of the shell in the open direction. There are connected waterways on the shell end wall, the hollow shaft and the water tank mounting boss. The outlet of the waterway is located in the middle of the hollow shaft inner cavity and is perpendicular to the hollow shaft, and the inlet is located on the top surface of the water tank mounting boss. The axis of the hollow shaft and the axis of the shell inner cavity have an eccentricity e (required by the vane motor structure). The outer wall of the hollow shaft is a cylindrical structure, and the center hole is composed of a cylindrical screw hole and a smooth tapered hole. The water tank mounting boss is located on the outer shell on the opposite side of the handle. The wall has external threads and a central water channel (the same as the above-mentioned water channel); the motor adopts a conventional vane pump structure with a simple structure and light weight. It consists of a shell, a rotor, blades, fastening screws, an end cover and a sealing ring. The rotor is a hollow stepped shaft structure with a central cylindrical through hole, and the large end of the stepped shaft has axial grooves (to accommodate blades) with central symmetry distribution, and the small end face has fixing screw holes with central symmetry distribution. The end cover has a central hole and fixing holes with central symmetry distribution around the hole. The scraper consists of a fixed disk and a scraper. The fixed disk has a central hole, fixing holes with central symmetry distribution around the hole, and scraper fixing grooves with central symmetry distribution on the end face. The scraper is made of soft natural rubber. The vortex tube structure is a conventional structure, and there is an external thread at the cold nozzle; the water storage tank consists of a water storage tank body, a water filling cover and an air valve.

[0016] ②Specific connection

[0017] The machine base is the installation foundation of the special cleaning tool. The motor control valve is installed on the motor air supply manifold at the end of the handle, and the vortex tube control valve is on the vortex tube air supply manifold at the end of the handle. The blades are placed in the axial groove of the rotor (large end) and installed together in the inner cavity of the shell. The central cylindrical through hole of the rotor and the outer wall of the hollow shaft are matched with each other in clearance. After the end cover and the sealing ring are combined, they are fixed and sealed on the shell through the end cover fixing hole and the shell fixing screw hole with fastening screws (the rotor and the blades are sealed in the shell), and the center hole of the end cover is matched with the dynamic seal of the small end of the rotor (that is, the center hole of the end cover is matched with the outer cylindrical surface of the small end of the rotor in clearance, and the gap is sealed by the sealing ring. The scraper is fixedly installed in the scraper fixing groove with central symmetrical distribution on the end surface of the fixed plate, and the scraper is fixedly connected to the rotor by connecting screws through the fixing hole of the fixed plate and the fixing screw hole of the rotor. The central hole of the fixed plate and the hollow shaft constitute a cooling channel. The water storage tank mounting boss, the water storage tank body, the water filling cover and the air valve are sealed and connected in sequence through corresponding threads. The water spray pipe is sealed and installed on the water channel of the inner hole of the hollow shaft, and the water spray port is near the cold nozzle of the vortex tube. The vortex tube is sealed and connected through the external thread of the cold nozzle and the internal thread of the hollow shaft. The outlet of the vortex tube control valve and the air inlet of the vortex tube are sealed and connected with a gas hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structural technical route of the present invention;

[0019] Figure 2 It is a structural schematic diagram of a special cleaning tool;

[0020] Figure 3 This is a working diagram of professional cleaning tools;

[0021] 1- base, 2- vortex tube control valve outlet, 3- vortex tube control valve, 4- handle, 5- motor, 6- housing, 7- motor control valve outlet, 8- motor control valve, 9- fastening screw, 10- hollow shaft, 11- connecting screw, 12- rotor, 13- sealing ring, 14- blade, 15- end cover, 16- water storage tank mounting boss, 17- fixing plate, 18- scraper, 19- scraper plate, 20- water storage tank, 21- water storage tank body, 22- water filling cover, 23- air valve, 24- water spray pipe, 25- vortex tube, 26- air delivery hose. DETAILED DESCRIPTION

[0022] 1. Overall structural composition of the present invention

[0023] like Figure 1 As shown in the figure, it is mainly composed of an air compressor, an air pipe and a special cleaning tool. The air compressor provides compressed air as a refrigerant, power and cleaning medium to the special cleaning tool through an air hose.

[0024] 2. Specific structure and connection of special cleaning tools

[0025] 1. Specific structure

[0026] like Figure 2As shown, the special cleaning tool is mainly composed of a machine base 1, a motor 5, an air supply hose 26, a scraper 19, a vortex tube 25, a water storage tank 20 and a water spray pipe 24. The base 1 consists of a handle 4, a motor control valve 8, a vortex tube control valve 3, a shell 6, a hollow shaft 10, a water tank mounting boss 16 and other structures. The handle 4 has an air inlet in the center and a manifold at the end. The handle side shell side wall has air inlet holes and exhaust holes (structural requirements of the vane air motor, the arrangement of the two will not be repeated), the end face of the shell 6 in the opening direction of the inner cavity has symmetrically distributed fixing screw holes, the shell 6 end wall, the hollow shaft 10 and the water tank mounting boss 16 have connected water channels, the water channel outlet is located in the middle of the inner cavity of the hollow shaft 10 and is perpendicular to the hollow shaft 10, the inlet is located on the top surface of the water tank mounting boss 16, the axis of the hollow shaft 10 and the axis of the inner cavity of the shell 6 have an eccentricity e (required by the motor structure), the outer wall of the hollow shaft 10 is a cylindrical structure, the center hole is composed of a cylindrical screw hole and a smooth tapered hole, the water tank mounting boss 16 is located on the outer wall of the shell on the opposite side of the handle, and has an external thread and a central water channel (the same as the above-mentioned water channel); the motor 5 adopts a conventional vane motor structure with a simple structure and light weight, which is composed of a housing 6, a rotor 12, a blade 14, a fastening screw 9, an end cover 15 and a sealing ring 13, etc. The rotor 12 is a hollow stepped shaft structure, with a central cylindrical through hole, a centrally symmetrically distributed axial groove (accommodating the blade 14) at the large end of the stepped shaft, and a centrally symmetrically distributed fixing screw hole at the end face of the small end, the end cover 15 has a central hole and centrally symmetrically distributed fixing holes around the hole, the scraper 19 is composed of a fixed disk 17 and a scraper 18, the fixed disk 17 has a central hole, centrally symmetrically distributed fixing holes around the hole, and centrally symmetrically distributed scraper 18 fixing grooves on the end face, the scraper 18 is made of soft natural rubber, the vortex tube 25 is a conventional structure, and an external thread is provided at the cold nozzle; the water storage tank 20 is composed of a water storage tank body 21, a water filling cover 22 and an air valve 23.

[0027] 2. Specific connection

[0028] like Figure 2As shown, the base 1 is the installation base of the special cleaning tool, the motor control valve 8 is installed on the air supply manifold of the motor 5 at the end of the handle 4, the vortex tube control valve 3 is on the air supply manifold of the vortex tube 25 at the end of the handle 4, the blade 14 is placed in the axial groove of the rotor 12 (large end) and installed together in the inner cavity of the shell 6, the central cylindrical through hole of the rotor 12 and the outer wall of the hollow shaft 10 are gap-matched, the end cover 15 and the sealing ring 13 are combined and fixed and sealed on the shell 6 through the fixing hole of the end cover 15 and the fixing screw hole of the shell 6 with the fastening screw 9 (the rotor 12 and the blade 14 are sealed in the shell 6), and the center hole of the end cover 15 is dynamically sealed with the small end of the rotor 12 (that is, the center hole of the end cover 15 is gap-matched with the outer cylindrical surface of the small end of the rotor 12, and is sealed by the sealing ring 1 3 seals the gap to form a dynamic seal), the scraper 18 is fixedly installed in the fixing groove on the end face of the fixing plate 17, and the scraper 19 is fixedly connected to the rotor 12 by connecting screws through the fixing hole of the fixing plate 17 and the fixing screw hole of the rotor 12, the fixing plate 17 and the center hole of the hollow shaft 10 constitute a cooling channel, the water storage tank mounting boss 16, the water storage tank body 21, the water filling cover 22 and the air valve 23 are sealed and connected in sequence through corresponding threads, the water spray pipe 24 is installed and sealed on the water channel of the inner hole of the hollow shaft 10, and the water spray port is near the cold nozzle of the vortex tube 25, the vortex tube 25 is sealed and connected through the external thread of the cold nozzle and the internal thread of the hollow shaft 10, and the outlet of the vortex tube control valve 3 and the air inlet of the vortex tube 25 are sealed and connected by a gas hose 26.

[0029] 3. Working Process

[0030] like Figure 3 As shown:

[0031] ① First, use the air pipe to connect the central airway of the handle 4 of the special cleaning tool for the compressed air outlet of the air compressor (not shown), and then adjust the opening of the motor control valve 8, the vortex tube control valve 3 and the air valve 23 to obtain the appropriate motor 5 speed, the cold air temperature of the cold nozzle of the vortex tube 25 and the water output of the water spray pipe 24, and then hold the handle 4 to bring the special cleaning tool close to the cover area with the tree oil attached, and make the scraper 18 fit the cover with appropriate force.

[0032] ② The compressed air from the compressor passes through the air inlet at the center of the handle 4 and enters the manifold simultaneously in two ways.

[0033] It enters the air manifold of motor 5 and enters the air inlet of motor 5 through motor control valve 8 (controls the speed of motor 5), drives motor 5 to drive scraper 19 to rotate, and the low-pressure air formed is discharged into the atmosphere through the exhaust hole of motor 5.

[0034] Enter the vortex tube 25 manifold and pass through the vortex tube control valve 3 (control the cold air spray volume and temperature of the vortex tube 25), then enter the vortex tube 25 and split into two paths. One path sprays cold air through the cold nozzle of the vortex tube 25. Due to the reduction of the pressure of the high-speed air flow, a small amount of clean water is sucked from the water spray pipe 24 (Bernoulli principle) and is broken by the cold air flow to form cold water mist. Since the clean water is sucked out and a certain negative pressure is formed in the water storage tank 20, the air enters the water storage tank 20 through the air valve 23 (automatically controls the intake flow) to compensate for the volume and maintain a certain vacuum degree, thereby adjusting the water flow of the water spray pipe 24. When the special cleaning tool is not in working state, there is a certain vacuum degree in the water storage tank 20 to prevent the clean water from leaking from the nozzle of the water spray pipe 24.

[0035] The cold water mist (cold air and water droplets cooled by the cold air to a lower temperature) passes through the channel formed by the central holes of the hollow shaft 10, the end cover 15 and the fixed disk 17, and through the gaps between the scrapers 18, flushing and cooling the cover and the oil attached thereto (part of the water droplets in the cold water mist are adsorbed on the cover to form a water film), and the cover and the oil attached thereto are quickly cooled, and the oil quickly changes from sticky and soft to hard and brittle. During the temperature change process, due to the different thermal conductivity, heat capacity and thermal expansion coefficient of the cover and the oil in the cooled area, the pace of thermal expansion and contraction is different, and the close connection between the two is quickly destroyed. The hard and brittle oil is directly separated from or peeled off by the scraper 18 on the fixed disk 17 driven by the rotor 12, and then taken away from the cover by the water flow (the lubricating effect of water can not only reduce the excessive damage caused by the scraper 18 to the paint surface of the cover, but also prevent the fallen oil from re-attaching to the cover).

[0036] ③ Under the premise of keeping the resin oil at low temperature and hardness, the resin oil on the vehicle cover can be cleaned by moving the special tool at an appropriate speed.

Claims

1. A special cleaning tool for removing tree oil from vehicle panels, characterized in that: The invention comprises a machine base (1), a motor (5), an air delivery hose (26), a scraper (19), a vortex tube (25), a water storage tank (20) and a water spray pipe (24). The machine base (1) comprises a handle (4), a motor control valve (8), a vortex tube control valve (3), a shell (6), a hollow shaft (10) and a water storage tank mounting boss (16). The handle (4) has an air inlet at the center, the handle (4) has an air manifold at the end, the handle (4) has an air inlet hole and an air outlet on the side wall of the shell on the handle (4), the end surface of the shell (6) in the direction of the inner cavity opening has symmetrically distributed fixing screw holes, the end wall of the shell (6), the hollow shaft (10) and the water storage tank mounting boss (16) have connected water channels, the water channel outlet is located in the middle of the inner cavity of the hollow shaft (10) and is perpendicular to the hollow shaft (10),The water channel inlet is located on the top surface of the water tank mounting boss (16), the axis of the hollow shaft (10) is eccentric to the axis of the inner cavity of the shell (6), the outer wall of the hollow shaft (10) is a cylindrical structure, the center hole of the hollow shaft (10) is composed of a cylindrical screw hole and a smooth tapered hole, the water tank mounting boss (16) is located on the outer wall of the shell on the side opposite to the handle, the water tank mounting boss (16) has an external thread and a central water channel, the motor (5) comprises a shell (6), a rotor (12), blades (14), a fastening screw (9), an end cover (15) and a sealing ring (13), the rotor (12) is a hollow stepped shaft structure, the rotor (12) has a central cylindrical through hole, the large end of the stepped shaft has axial grooves symmetrically distributed at the center to accommodate the blades (14), and the small end of the stepped shaft has a central cylindrical through hole. The end surface has fixing screw holes that are centrally symmetrically distributed, the end cover (15) has a central hole, and the periphery of the central hole of the end cover (15) has fixing holes that are centrally symmetrically distributed, the scraper (19) is composed of a fixing plate (17) and a scraper (18), the fixing plate (17) has a central hole, and the periphery of the central hole of the fixing plate (17) has fixing holes that are centrally symmetrically distributed, and the end surface of the fixing plate (17) has fixing grooves for the scraper (18) that are centrally symmetrically distributed, the scraper (18) is made of soft natural rubber material, the vortex tube (25) has external threads at the cold nozzle, the water storage tank (20) is composed of a water storage tank body (21), a water filling cover (22) and an air valve (23), the machine base (1) is the installation base of the special cleaning tool, and the motor control valve (8) is installed on the handle ( 4) at the end of the motor (5) air supply manifold, the vortex tube control valve (3) is installed on the vortex tube (25) air supply manifold at the end of the handle (4), the blade (14) is placed in the axial groove of the rotor (12) and installed together in the inner cavity of the housing (6), the central cylindrical through hole of the rotor (12) and the outer wall of the hollow shaft (10) are gap-matched, the end cover (15) and the sealing ring (13) are combined and fixedly sealed on the housing (6) through the fixing hole of the end cover (15) and the fixing screw hole of the housing (6) by the fastening screw (9), and the central hole of the end cover (15) and the small end of the rotor (12) are dynamically sealed, and the gap is sealed by the sealing ring (13) to form a dynamic seal, and the scraper (18) is fixedly installed in the fixing groove on the end surface of the fixing plate (17), The scraper (19) is fixedly connected to the rotor (12) by connecting screws through the fixing hole of the fixing plate (17) and the fixing screw hole of the rotor (12). The center hole of the fixing plate (17) and the center hole of the hollow shaft (10) form a cooling channel. The water tank mounting boss (16), the water tank body (21), the water filling cover (22) and the air valve (23) are sealed and connected in sequence through corresponding threads. The water spray pipe (24) is sealed and installed on the water channel of the inner hole of the hollow shaft (10), and the water spray port is near the cold spray port of the vortex tube (25). The vortex tube (25) is sealed and connected through the external thread of the cold spray port and the internal thread of the hollow shaft (10). The outlet of the vortex tube control valve (3) and the air inlet of the vortex tube (25) are sealed and connected by a gas hose (26).

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