Fluidized bed coating device for large-diameter plastic-coated steel pipe

Abstract

The utility model relates to the technical field of plastic-coated steel pipe processing, in particular to a fluidized bed coating device for a large-diameter plastic-coated steel pipe. According to the technical scheme, the device comprises a bed body and a closing cover, an air distribution pipe is fixedly installed in the bed body, multiple sets of spray pipes are fixedly installed at the top of the air distribution pipe at equal intervals, one-way valves are movably installed on the lower portions in the spray pipes, two sets of hydraulic rods are fixedly installed on the back of the bed body, and electric push rods are fixedly installed on the two sides of the top of the closing cover; the output end of the electric push rod penetrates through the closing cover and is fixedly provided with a lifting base. Through the combination of various structures, the top of the device can be closed and sealed, the situations that powder is splashed to the outside to pollute a working area and workers are adsorbed into the body to cause harm when the device works are avoided, the stability of the device in the working process is improved, and the device can rotate when a steel pipe is coated, so that the working efficiency is improved. Therefore, the uniformity of the device during coating treatment of the steel pipe is improved, and the coating quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic-coated steel pipe processing, in particular to a fluidized bed coating device for large-caliber plastic-coated steel pipes. Background Art

[0002] Plastic coated steel pipe, also known as plastic coated pipe, steel plastic composite pipe, plastic coated composite steel pipe, is a steel pipe as the base, through the spraying, rolling, dipping, suction process on the inner surface of the steel pipe (bottom pipe) a layer of plastic anti-corrosion layer or plastic anti-corrosion layer on the inner and outer surfaces of the steel pipe. When processing the plastic coated steel pipe, it is necessary to coat its surface, so a fluidized bed coating device is required. The application number is:

[0003] The "multifunctional fluidized bed coating device for plastic-coated steel pipes" disclosed in "CN211275324U" has solved the technical drawbacks that powder is inconvenient to clean, which increases the difficulty of cleaning for operators. However, in actual use, devices with similar structures still have many defects. For example, most of them adopt an open structure to coat the steel pipes. When the open structure is used to coat the steel pipes, powder splashes. When the powder splashes, it will scatter around the device, thereby polluting the working area of ​​the personnel and there is a risk of inhalation by the personnel. At the same time, most of the pipes are fixed during coating, resulting in uneven coating when the device processes the pipes, thereby affecting the coating quality of the device on the steel pipes. Therefore, it is necessary to design a fluidized bed coating device for large-diameter plastic-coated steel pipes. Utility Model Content

[0004] The utility model aims to provide a fluidized bed coating device for large-diameter plastic-coated steel pipes to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fluidized bed coating device for large-diameter plastic-coated steel pipes, comprising a bed body and a closing cover, an air distribution pipe is fixedly installed inside the bed body, and a plurality of groups of nozzles are fixedly installed at equal distances on the top of the air distribution pipe, a one-way valve is movably installed below the inside of the nozzle, two groups of hydraulic rods are fixedly installed on the back of the bed body, electric push rods are fixedly installed on both sides of the top of the closing cover, and the output ends of the electric push rods pass through the closing cover and are fixedly installed with a lifting seat, a clamping cylinder is fixedly installed on the outside of the lifting seat, and a clamping seat is fixedly installed on the output end of the clamping cylinder, a rotating motor is fixedly installed below the outside of the clamping seat, and a rotating disk is fixedly installed on the output end of the rotating motor through the clamping seat, and an air distribution seat is fixedly installed on the top of the inside of the closing cover.

[0006] A large-diameter plastic-coated steel pipe fluidized bed coating device using the technical solution, the bed body can store the coated powder, the air distribution pipe is connected to the external gas equipment, so that the powder inside the bed body can be blown and rolled through the air distribution pipe and the multiple groups of nozzles installed on the top, and the powder can be coated on the surface of the pipe by rolling inside the bed body. When the nozzle is exhausted, the one-way valve is pushed open, and when the exhaust is suspended, the one-way valve automatically closes the nozzle due to gravity, so that the nozzle can be closed when the device is suspended, to prevent the powder from entering the nozzle and the air distribution pipe to cause blockage;

[0007] The heating rod can heat the powder inside the bed, so that the powder can be adsorbed on the outer wall of the steel pipe. The temperature sensor can measure and detect the temperature of the powder inside the bed. The output end of the hydraulic rod is fixedly connected to the closing cover. The closing cover can be lowered by contracting the hydraulic rod, so that the closing cover can close the top of the bed. By closing the closing cover to the top of the bed, powder splashing when the device is coating the pipe soil can be avoided, thereby avoiding the pollution of the tooling area and the risk of inhalation by the staff during the operation of the device, and increasing the stability of the device during operation and the safety of the staff;

[0008] The clamping cylinder can push the clamping seat and the rotating disk by extending, so that the two ends of the steel pipe can be clamped and fixed by the clamping seat and the rotating disk, the electric push rod and the lifting seat can lower and rise the clamped steel pipe, so that the depth of the steel pipe buried in the powder can be controlled and adjusted when the device is coating the steel pipe, and it is also convenient for the staff to load and unload the device, the rotating motor can rotate the steel pipe clamped and fixed by the rotating disk, so that the steel pipe can be rotated when it is buried in the powder for plastic coating, and the rotation during coating of the steel pipe improves the uniformity and increases the quality of the coating process of the steel pipe by the device, the air distribution seat is connected to the external air pressure equipment through the connecting pipe, and multiple sets of cleaning nozzles are fixedly installed on the bottom of the air distribution seat, so that the excess powder on the surface of the steel pipe can be blown off by the air distribution seat and the cleaning nozzle, avoiding the situation where the steel pipe is spilled to the outside when it is discharged.

[0009] Preferably, a plurality of sets of heating rods are fixedly installed on the front and rear sides of the bed, and a temperature sensor is fixedly installed on the bottom of the bed. The heating rods can heat the powder inside the bed, and the temperature sensor can measure and detect the temperature of the powder inside the bed.

[0010] Preferably, a connecting pipe penetrating the closed cover is fixedly installed on the top of the air distribution seat, and a plurality of cleaning nozzles are fixedly installed at equal distances on the bottom of the air distribution seat. The connecting pipe is connected to an external air pressure device, and the cleaning nozzle can blow off excess powder on the surface of the steel pipe after the device completes coating.

[0011] Preferably, a protective mesh cover is fixedly installed on the top of the nozzle. The protective mesh cover can protect the top of the nozzle, prevent foreign matter from entering the nozzle and causing blockage, and ensure the stability of the device during operation.

[0012] Preferably, a clamping column is fixedly installed on the inner side of the rotating disk, and an anti-skid pad is fixedly installed on the outer side of the inner wall of the rotating disk. The clamping column can be inserted into the inside of the pipeline, thereby increasing the stability of the rotating disk when clamping the pipeline, and the anti-skid pad increases the friction force of the inner wall of the rotating disk, thereby improving the stability of the rotating disk when driving the pipeline to rotate.

[0013] Preferably, bases are fixedly installed on both sides of the bottom of the bed, and shock-absorbing pads are fixedly installed on the bottom of the bases. The bases can support and fix the bottom of the device, and the shock-absorbing pads can perform vibration isolation treatment on the bottom of the device during operation, thereby reducing the impact of external vibration on the device.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. By setting up the coordination between the bed body and the air distribution pipe, nozzle, one-way valve and closing cover, the bed body can store powder, the air distribution pipe and nozzle can roll the powder inside the bed body by airflow drive, so that the steel pipe can be coated. The one-way valve can close the nozzle when not in use to avoid the powder entering the nozzle and the air distribution pipe and causing blockage. The closing cover can close and seal the steel pipe when it is coated in the bed body, avoiding the powder splashing to the outside to pollute the working area and the harm to the personnel when the device is operating, thereby increasing the stability of the device during operation.

[0016] 2. By setting the coordination between the clamping seat and the rotating motor and the electric push rod, the clamping seat can clamp and fix the pipe, so as to facilitate the coating treatment of the pipe inside the device. The rotating motor can rotate the clamped steel pipe, so that the device can rotate when coating the steel pipe, thereby increasing the uniformity of the coating treatment of the steel pipe by the device and improving the coating quality. The electric push rod can lift the steel pipe, so as to facilitate the staff to carry out feeding and discharging operations on the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the nozzle of the utility model;

[0019] Figure 3 This is a schematic diagram of the bottom structure of the closing cover of the utility model;

[0020] Figure 4 This is a schematic diagram of the bed structure of the utility model;

[0021] Figure 5 It is a schematic diagram of the structure of the clamping seat of the utility model.

[0022] In the figure: 1. base; 101. shock-absorbing pad; 2. bed; 3. air distribution pipe; 301. nozzle; 302. one-way valve; 303. protective mesh cover; 4. heating rod; 401. temperature sensor; 5. hydraulic rod; 6. closing cover; 7. electric push rod; 701. lifting seat; 8. connecting pipe; 801. air distribution seat; 802. cleaning nozzle; 9. clamping cylinder; 901. clamping seat; 10. rotating motor; 1001. rotating disk; 1002. clamping column; 1003. anti-slip pad. DETAILED DESCRIPTION

[0023] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Embodiment 1

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a large-diameter plastic-coated steel pipe fluidized bed coating device proposed by the utility model comprises a bed body 2 and a closing cover 6, an air distribution pipe 3 is fixedly installed inside the bed body 2, and a plurality of groups of nozzles 301 are fixedly installed at equal distances on the top of the air distribution pipe 3, a one-way valve 302 is movably installed below the inside of the nozzle 301, two groups of hydraulic rods 5 are fixedly installed on the back of the bed body 2, electric push rods 7 are fixedly installed on both sides of the top of the closing cover 6, and the output end of the electric push rod 7 passes through the closing cover 6 and is fixedly installed with a lifting seat 701, a clamping cylinder 9 is fixedly installed on the outside of the lifting seat 701, and a clamping seat 901 is fixedly installed on the output end of the clamping cylinder 9, a rotating motor 10 is fixedly installed below the outside of the clamping seat 901, and a rotating disk 1001 is fixedly installed on the output end of the rotating motor 10 passes through the clamping seat 901, and an air distribution seat 801 is fixedly installed on the top of the closing cover 6;

[0026] A plurality of heating rods 4 are fixedly installed on the front and rear sides of the bed body 2, and a temperature sensor 401 is fixedly installed on the bottom of the bed body 2. A connecting pipe 8 that passes through the closing cover 6 is fixedly installed on the top of the air distribution seat 801, and a plurality of cleaning nozzles 802 are fixedly installed at equal distances on the bottom of the air distribution seat 801.

[0027] The working principle of the fluidized bed coating device for large-diameter plastic-coated steel pipes based on Example 1 is as follows: the bed body 2 can store the coated powder, and the air distribution pipe 3 is connected to the external gas equipment, so that the powder inside the bed body 2 can be blown and rolled through the air distribution pipe 3 and the multiple groups of nozzles 301 installed on the top, and the powder can be coated on the surface of the pipe by rolling inside the bed body 2. When the nozzle 301 is exhausted, the one-way valve 302 is pushed open, and when the exhaust is suspended, the one-way valve 302 automatically closes the nozzle 301 due to gravity, so that the nozzle 301 can be closed when the device is suspended, so as to prevent the powder from entering the nozzle 301 and the inside of the air distribution pipe 3 to cause blockage;

[0028] The heating rod 4 can heat the powder inside the bed 2, so that the powder is adsorbed on the outer wall of the steel pipe. The temperature sensor 401 can measure and detect the temperature of the powder inside the bed 2. The output end of the hydraulic rod 5 is fixedly connected to the closing cover 6. The closing cover 6 can be lowered by contracting the hydraulic rod 5, so that the closing cover 6 can close the top of the bed 2. By closing the closing cover 6 to the top of the bed 2, powder splashing can be avoided when the device is coating the pipe soil, thereby avoiding the pollution of the tooling area and the risk of inhalation by the staff during the operation of the device, and increasing the stability of the device during operation and the safety of the staff;

[0029] The clamping cylinder 9 can push the clamping seat 901 and the rotating disk 1001 by extending, so that the two ends of the steel pipe can be clamped and fixed by the clamping seat 901 and the rotating disk 1001. The electric push rod 7 and the lifting seat 701 can adjust the lowering and raising of the clamped steel pipe, so that the depth of the steel pipe buried in the powder can be controlled and adjusted when the device is coating the steel pipe, and it is also convenient for the staff to load and unload the device. The rotating motor 10 can clamp the steel pipe fixed by the rotating disk 1001. The air distribution seat 801 is connected to the external air pressure equipment through the connecting pipe 8, and a plurality of cleaning nozzles 802 are fixedly installed on the bottom of the air distribution seat 801. Therefore, the excess powder on the surface of the steel pipe can be blown off through the air distribution seat 801 and the cleaning nozzle 802 after the coating of the steel pipe is completed by the device, so as to avoid the situation that the powder is spilled to the outside when the steel pipe is discharged.

[0030] Embodiment 2

[0031] like Figure 1 , Figure 2 and Figure 5As shown, the utility model proposes a fluidized bed coating device for large-diameter plastic-coated steel pipes. Compared with the first embodiment, this embodiment also includes: a protective mesh cover 303 is fixedly installed on the top of the nozzle 301, a clamping column 1002 is fixedly installed on the inner side of the rotating disk 1001, and an anti-slip pad 1003 is fixedly installed on the outer side of the inner wall of the rotating disk 1001, a base 1 is fixedly installed on both sides of the bottom of the bed 2, and a shock-absorbing pad 101 is fixedly installed on the bottom of the base 1.

[0032] In this embodiment, Figure 2 As shown, the protective mesh cover 303 can protect the top of the nozzle 301, preventing foreign matter from entering the nozzle 301 and causing blockage, thereby ensuring the stability of the device during operation; Figure 5 As shown, the clamping column 1002 can be inserted into the interior of the pipe, thereby increasing the stability of the rotating disk 1001 when clamping the pipe, and the anti-slip pad 1003 increases the friction of the inner wall of the rotating disk 1001, thereby improving the stability of the rotating disk 1001 when driving the pipe to rotate; Figure 1 As shown, the base 1 can support and fix the bottom of the device, and the shock-absorbing pad 101 can perform vibration isolation treatment on the bottom of the device when it is in operation, thereby reducing the impact of external vibration on the device.

[0033] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A fluidized bed coating device for large-caliber plastic-coated steel pipes, comprising a bed body (2) and a closing cover (6), characterized in that: An air distribution pipe (3) is fixedly installed inside the bed body (2), and a plurality of groups of nozzles (301) are fixedly installed at equal distances on the top of the air distribution pipe (3). A one-way valve (302) is movably installed below the inside of the nozzle (301). Two groups of hydraulic rods (5) are fixedly installed on the back of the bed body (2). Electric push rods (7) are fixedly installed on both sides of the top of the closing cover (6), and the output end of the electric push rod (7) passes through the closing cover (6) and is fixedly installed with a lifting seat (701). A clamping cylinder (9) is fixedly installed on the outside of the lifting seat (701), and a clamping seat (901) is fixedly installed on the output end of the clamping cylinder (9). A rotating motor (10) is fixedly installed below the outside of the clamping seat (901), and a rotating disk (1001) is fixedly installed on the output end of the rotating motor (10) passes through the clamping seat (901). An air distribution seat (801) is fixedly installed on the top of the inside of the closing cover (6).

2. A fluidized bed coating device for large-diameter plastic-coated steel pipes according to claim 1, characterized in that: A plurality of sets of heating rods (4) are fixedly installed on the front and rear sides of the interior of the bed body (2), and a temperature sensor (401) is fixedly installed on the bottom of the interior of the bed body (2).

3. The large-diameter plastic-coated steel pipe fluidized bed coating device according to claim 1 is characterized in that: A connecting pipe (8) penetrating the closing cover (6) is fixedly mounted on the top of the air distribution seat (801), and a plurality of cleaning nozzles (802) are fixedly mounted at equal distances on the bottom of the air distribution seat (801).

4. The large-diameter plastic-coated steel pipe fluidized bed coating device according to claim 1 is characterized in that: A protective mesh cover (303) is fixedly mounted on the top of the nozzle (301).

5. The large-diameter plastic-coated steel pipe fluidized bed coating device according to claim 1 is characterized in that: A clamping column (1002) is fixedly installed on the inner side of the rotating disk (1001), and an anti-slip pad (1003) is fixedly installed on the outer side of the inner wall of the rotating disk (1001).

6. The large-diameter plastic-coated steel pipe fluidized bed coating device according to claim 1 is characterized in that: Bases (1) are fixedly installed on both sides of the bottom of the bed body (2), and shock absorbing pads (101) are fixedly installed on the bottom of the base (1).

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