CN203196811U - Steel tube coating device - Google Patents

Abstract

The utility model discloses a steel tube coating device. The steel tube coating device comprises a blade coating chamber, a blade coating ring and roller beds, wherein a curtain coating hopper is arranged in the blade coating chamber, the blade coating ring comprises a left portion and a right portion, an inlet portion on the left portion of a steel tube is a first circular-truncated-cone-shaped cylinder, an outlet portion on the right portion of the steel tube is a second circular-truncated-cone-shaped cylinder, the first circular-truncated-cone-shaped cylinder and the second circular-truncated-cone-shaped cylinder are identical, the section, with the smaller diameter, of the first circular-truncated-cone-shaped cylinder is connected with the section, with the small diameter, of the second circular-truncated-cone-shaped cylinder, a ring-shaped cavity with a width of 1cm is arranged at the connecting position between the two circular-truncated-cone-shaped cylinders, the two circular-truncated-cone-shaped cylinders are connected through the ring-shaped cavity to form an integral structure, the blade coating ring is made of rubber materials or resin materials, a metal ring is installed outside the ring-shaped cavity at the connecting position between the two circular-truncated-cone-shaped cylinders in a sleeved mode, a high-pressure air pipe is fixed on the metal ring and the ring-shaped cavity, the roller beds are connected with an output shaft of a motor, and the steel tube is placed on the roller beds. According to the novel steel tube coating device, the thickness of a coating membrane of the steel tube can be controlled and be adjusted, and the coating membrane can be even.

Description

A steel pipe coating device

technical field

The utility model relates to the field of coating, in particular to a steel pipe coating device. the

Background technique

Steel pipe painting is one of the indispensable production processes in modern steel pipe production. Its main function is to evenly spray a layer of anti-rust paint with a thickness of about 10-20 microns on the surface of the finished steel pipe to ensure the anti-rust and aesthetic functions of the steel pipe. . At present, there are mainly three methods for antirust spraying on the outer surface of steel pipes. One is to use the paint pump to spray paint on the surface of the steel pipe in all directions through the multiple paint spray holes in the ring pipe, so that the surface of the steel pipe can be sprayed and painted at a high speed. , There will be no missing coating phenomenon, and then the excess paint will be evenly brushed off with the paint brush for several years, so that the excess paint will flow back into the paint tank for automatic cycle spraying. The paint recovery efficiency of this spraying method is low, the thickness of the paint film is difficult to control, and the paint curing time is long. Usually, special drying furnace equipment is required, which takes up a lot of space; The paint is atomized, the steel pipe passes through the oil mist at a constant speed, and the oil mist adheres to the steel pipe. The thickness of the paint film cannot be controlled in this spraying method, and the curing time of the paint is long. It requires special drying equipment and takes up a lot of space; the third is the blowing type, first Spray a layer of paint evenly on the surface of the steel pipe, and then blow out high-pressure gas through the air ring to evenly blow the surface of the steel pipe covered with paint, so that the paint film is evenly attached to the surface of the steel pipe according to the process requirements. The current spray-type steel pipe is painted The air ring on the machine often causes problems such as hanging beads on the steel pipe, leaking spray, and uneven thickness of the paint film during production. the

Contents of the invention

The purpose of this utility model is to overcome the deficiencies of the prior art, design and develop a new steel pipe coating device, which can control and adjust the coating film thickness of the steel pipe, and make the steel pipe coating device evenly distributed coating film. the

The technical scheme provided by the utility model is:

A steel pipe coating device, comprising:

A scraping room, the scraping room is provided with a shower funnel, which is located directly above the steel pipe, the shower funnel is installed on a fixed bracket, the bottom of the shower funnel is a slender rectangular mouth, the length of the slender rectangular mouth Larger than the diameter of the steel pipe, the paint flows out from the bottom of the spray funnel and is sprayed on the surface of the steel pipe in progress;

Scratch coating ring, which is installed on the scraping coating ring fixing bracket, the diameter of the scraping coating ring is greater than the diameter of the steel pipe, and the steel pipe coated with paint passes through the scraping coating ring;

The roller table is connected with the output shaft of the motor, and the steel pipe is placed on the roller table. the

Preferably, the scraping ring is divided into left and right parts, the inlet of the steel pipe in the left part is the first circular platform, the outlet of the steel pipe in the right part is the second circular platform, the first circular platform is the same as the second circular platform, The small diameter sections of the two circular platforms are connected, and a cylinder with a width of 1 cm is arranged at the joint, and the cylinder connects the two circular platforms to form an integrated structure. the

Preferably, the material of the scraping ring is rubber material or resin material, and the above-mentioned cylinder connecting the two circular platform cylinders is an annular cavity, and a metal ring is placed outside the annular cavity. A high-pressure air pipe is arranged on the annular cavity and the metal ring, and the high-pressure air enters into the annular cavity through the high-pressure air pipe. the

Preferably, the inner wall of the first cylindrical cylinder at the entrance of the steel pipe of the scraping ring is provided with a deflector, and the deflector is fixedly connected to the first cylindrical cylinder through a deflector fixing bolt, and outside the scraping ring The set is provided with a cylindrical scraping ring protective cover, two round table cylinders are fixedly connected with the scraping ring protective cover, and the scraping ring protective cover is fixed on the scraping ring fixing frame. the

Preferably, it also includes a curing chamber, on the adjacent surface of the curing chamber and the scraping chamber, a hole for the steel pipe to pass through is provided, and two sets of ultraviolet curing mechanisms with the same structure are arranged in the curing chamber, each group The ultraviolet curing mechanism includes three ultraviolet curing lamps, and each group of lamps is arranged in a ring around the steel pipe, and the number of lamp tubes varies with the diameter of the steel pipe. the

Preferably, it also includes a light-shielding device, a light-absorbing cylinder is arranged behind the scraping ring, which runs through the scraping chamber and the curing chamber; a light-shielding gate valve is set at the junction of the scraping chamber and the curing chamber, and the blocking The shutter valve is connected with the shutter cylinder through the piston rod. the

Preferably, a recovery tank is also included, which is located directly below the inlet of the shower funnel and the steel pipe of the scraping ring, and the paint flowing down from the steel pipe and the paint flowing out of the scraping ring will be recycled into the recovery tank. the

Preferably, the spray funnel is a tapered funnel, and spray nozzles are arranged on both sides of the funnel perpendicular to the direction of the steel pipe, and the spray nozzles are inclined at a certain angle in the direction perpendicular to the two sides, and the two sides The direction in which the spray nozzles on the top are inclined is opposite. the

Fill the annular cavity of the above-mentioned scraping ring with high-pressure gas, because the material of the scraping ring is made of artificial or natural polymer materials, such as rubber material or resin material, so the high-pressure gas can make the annular cavity The cavity expands toward the central axis of the steel pipe, and the distance between the scraping ring and the steel pipe can be controlled by adjusting the amount of high-pressure gas, that is, the air pressure, so that the thickness of the coating film on the steel pipe can be adjusted; because the annular cavity of the scraping ring The filled high-pressure gas is evenly distributed in the annular cavity, which can ensure the uniform coating film of the steel pipe produced by scraping; the metal ring is set outside the annular cavity to ensure that when the pressure in the annular cavity increases, the annular The cavity only expands toward the central axis of the steel pipe and does not expand outward. the

The paint flowing down from the steel pipe and the paint scraped off by the scraping ring flow into the recovery tank through the circular table tube, which can be recycled and used without causing waste of raw materials. the

A deflector is set inside the first circular table tube. When the steel pipe enters the scraping ring, it will first touch the deflector on the inner wall of the scraping ring. When the center of the steel pipe and the scraping ring are not completely on the same central axis, the scraping The coating ring will self-adjust to the center of the steel pipe due to the function of the deflector to ensure the smooth passage of the steel pipe. Through the extrusion of the scraping ring, the paint on the surface of the steel pipe forms a uniform film. The deflector can also play a role in protecting the scraping ring. When the steel pipe enters the scraping ring, it avoids the damage of the scraping ring caused by the steel pipe directly colliding with the scraping ring. Therefore, the deflector can not only guide the flow but also protect the scraping ring. the

Compared with the traditional coating device, the steel pipe coating device described in the utility model has more scraping rings, and the scraping ring can control and adjust the coating film thickness of steel pipes and make the coating film uniform; and its structure Simple and easy to use. the

Description of drawings

Fig. 1 is a structural schematic diagram of a steel pipe coating device described in the present invention. the

Fig. 2 is a schematic diagram of the annular cavity of the scraping ring in the structural diagram of the steel pipe coating device described in the present invention. the

Fig. 3 is a longitudinal sectional view of the deflector in the structural schematic diagram of the steel pipe coating device described in the present invention. the

Fig. 4 is the transverse cross-sectional enlarged view of deflector in the structure schematic diagram of steel pipe coating device described in the utility model. the

Detailed ways

The utility model will be described in further detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it by referring to the description. the

As shown in Figure 1, the steel pipe coating device of the present utility model includes a scraper coating room, in which a shower funnel 1 is arranged, which is located directly above the steel pipe 2, and the shape of the shower funnel 1 is a conical funnel, with a bottom shape It is a slender rectangular mouth, and the length of the slender rectangular mouth is slightly greater than the diameter of the steel pipe 2. On both sides of the spray funnel perpendicular to the direction of the steel pipe 2, there are spray nozzles 3, and the spray nozzles 3 are vertical to the two sides. The direction is inclined at a certain angle, and the direction of the inclination of the spray nozzles 3 on both sides is opposite. The paint is injected into the spray funnel 1 through the spray nozzles, and the paint flows out from the bottom of the spray funnel 1 to form a waterfall of paint and is sprayed onto the moving vehicle. on the steel pipe surface. the

Squeegee coating ring 4, it is installed on the scrape coating ring fixed support 5, the diameter of described scrape coating ring 4 is greater than the diameter of steel pipe 2, the steel pipe 2 that is coated with paint passes through in scrape coating ring 4, and described scrape coating ring 4 is divided into left and right parts, the entrance of the left part of the steel pipe is the first circular platform tube, the outlet of the right part of the steel tube is the second circular platform tube, the first circular platform tube is the same as the second circular platform tube, and the diameter of the two circular platform tubes is small The cross-sections are connected, and an annular cavity 17 with a width of 1 cm is arranged at the joint, and the annular cavity 17 connects the two circular platform tubes to form an integrated structure. The material of the scraping ring 4 is rubber material or resin material, and a metal ring is placed outside the annular cavity at the junction of the two cylindrical tubes, and a high-pressure air pipe is arranged on the annular cavity 17 and the metal ring. 6. The high-pressure air enters the annular cavity through the high-pressure air pipe 6. the

The inner wall of the first cylindrical tube at the entrance of the steel pipe of the scraping ring is provided with a deflector 7, and the deflector 7 is fixedly connected with the first circular tube through a deflector fixing bolt 8, and is set outside the scraping ring. A cylindrical scraping coating ring protective cover 9 is arranged, and two round table tubes are fixedly connected with the scraping coating ring protective cover, and the scraping coating ring protective cover 9 is fixed on the scraping coating ring fixing frame 5. the

Roller table 10, which is connected with the output shaft of the motor, is used to transport steel pipes. the

The curing chamber 11 is provided with a hole for the steel pipe to pass through on the adjacent surface of the curing chamber and the scraping chamber, and two sets of ultraviolet curing mechanisms with the same structure are arranged in the curing chamber, and each group of ultraviolet curing mechanisms includes Three ultraviolet curing lamps 12, each group of lamps are arranged in a ring around the steel pipe 2, and the number of lamp tubes varies with the diameter of the steel pipe. the

It also includes a light-shielding device. A light-absorbing cylinder 15 is arranged behind the scraping ring 4, which runs through the scraping chamber and the curing chamber; The gate valve 14 is connected with the shutter cylinder 13 through the piston rod

Also comprise recovery tank 16, be positioned at shower coating funnel and scrape coating ring steel pipe entrance just below, the coating that flows down from steel pipe and the coating that flows out from scrape coating ring all can recycle in the recovery tank. the

Although the embodiment of the present utility model has been disclosed as above, it is not limited to the use listed in the description and the implementation, and it can be applied to various fields suitable for the present utility model. For those familiar with the art, Further modifications can be readily effected, so the invention is not limited to the specific details and examples shown and described herein without departing from the general concept defined by the claims and their equivalents. the

Claims (8)

1. steel pipe painting device, it is characterized in that, comprise: the blade coating chamber, the indoor showering funnel that is provided with of described blade coating, it is positioned at directly over the steel pipe, and described showering funnel is installed on the fixed support, and the bottom of showering funnel is elongated square orifice, the length of described elongated square orifice is greater than the diameter of steel pipe, and coating flows out on the steel tube surface that is coated in advancing from the showering funnel bottom;

The blade coating ring, it is installed on the blade coating ring fixed support, and the diameter of described blade coating ring is greater than the diameter of steel pipe, and the steel pipe that scribbles coating passes from the blade coating ring;

Roller-way, it is connected with the output shaft of motor, and described steel pipe is placed on the roller-way.

2. such as the described steel pipe painting device of claim l, it is characterized in that, described blade coating ring is divided into left and right sides two parts, the inlet portion of left half steel pipe is the first frustum cone cylinder, the export department of right half steel pipe is the second frustum cone cylinder, and the first frustum cone cylinder is identical with the second frustum cone cylinder, and two round platforms are connected in little cross section, footpath simply, being provided with width in the junction is 1 centimetre of wide cylinder, and described cylinder couples together two frustum cone cylinders and becomes one structure.

3. steel pipe painting device as claimed in claim 2, it is characterized in that, the material of described blade coating ring is elastomeric material or resin material, the cylinder of two frustum cone cylinders of connection described above is a ring cavity, suit one becket outside described ring cavity, at ring cavity and becket one high-pressure air tube is set, pressure-air is in high-pressure air tube enters into ring cavity.

4. steel pipe painting device as claimed in claim 3; it is characterized in that; the first frustum cone cylinder inwall of described blade coating ring steel pipe inlet portion is provided with deflector; deflector is fixedly connected with described the first frustum cone cylinder by the deflector gim peg; outside described blade coating ring, be set with a columnar blade coating environmental protection guard shield; two frustum cone cylinders are fixedly connected with blade coating environmental protection guard shield, and blade coating environmental protection guard shield is fixed on the blade coating ring fixed support.

5. the arbitrary steel pipe painting device described in claim 1 to 4, it is characterized in that, also comprise curing room, be provided with the hole that steel pipe is passed at described curing room and blade coating chamber adjacent surface, be provided with two groups of ultraviolet curing mechanisms that structure is identical in described curing room the inside, every group of ultraviolet curing mechanism comprises three ultraviolet curing lamps, and every group of lamp arrange ringwise around steel pipe, and the quantity of fluorescent tube changes with the diameter of steel tube size.

6. steel pipe painting device as claimed in claim 5 is characterized in that, also comprises light-baffling device, at described blade coating ring rear one extinction cylinder is set, and it runs through blade coating chamber and curing room; At blade coating chamber and curing room intersection one gate and valve that is in the light is set, the described gate and valve that is in the light links to each other with the lock cylinder that is in the light by piston rod.

7. steel pipe painting device as claimed in claim 4 is characterized in that, also comprises accumulator tank, be positioned at showering funnel and blade coating ring steel pipe porch under, the coating that flows down from steel pipe and all can be recovered in the accumulator tank from the coating that blade coating circulation goes out.

8. steel pipe painting device as claimed in claim 1, it is characterized in that, described showering funnel is conical hopper, be provided with the showering nozzle perpendicular to the funnel two sides on the steel pipe direction, the showering nozzle is in the certain angle that tilts of the direction perpendicular to two sides, the opposite direction that the showering nozzle on the two sides tilts.

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