A seamless steel pipe inner and outer wall synchronous spraying anticorrosive layer device

Abstract

The utility model relates to steel pipe processing equipment technical field especially relates to a seamless steel pipe inner and outer wall synchronous spraying anticorrosive layer device, including support seat, the support seat top is provided with the moving seat, the moving seat inside is installed with the support frame, the support frame inside is installed with the outer spray head, the support seat top is provided with the spraying assembly, the spraying assembly includes the moving plate sliding connection in the support seat top, the support pipe is installed in the moving plate top, the inner spray head is connected in the support pipe one end, the liquid storage tank is installed in moving plate one side, and the pressurized delivery pump is connected in the liquid storage tank top, the support seat top is provided with the rotation subassembly, the utility model discloses through the tee -joint pipe to anticorrosive paint is supplied to the inner spray head of being located in the support pipe front end and the outer spray head of being located on the support frame simultaneously, thereby realized to the steel pipe inner and outer wall's simultaneously, even covering, reduced the waiting solidification time between twice spraying, so that the equipment can continuous operation, improves the spraying efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of steel pipe processing equipment, and in particular to a device for synchronously spraying anti-corrosion coating on the inner and outer walls of seamless steel pipes. Background Technology

[0002] Seamless steel pipe anti-corrosion coating is achieved through surface treatment and electrostatic spraying processes, forming a uniform and dense protective coating on the inner and outer walls of the steel pipe. Commonly used materials include epoxy resin and polyethylene. This technology effectively isolates the pipe from moisture and chemical corrosion, significantly extending its service life in harsh environments such as underground, underwater, or chemical plants, and improving its pressure resistance and wear resistance. It boasts advantages such as strong adhesion, uniform coating, and efficient construction, making it a key anti-corrosion measure to ensure the long-term safe operation of pipelines.

[0003] Current seamless steel pipe spraying equipment adopts a step-by-step operation mode. The outer wall of the steel pipe is sprayed first, and the inner wall can only be sprayed after the surface coating has been completely cured. The process of processing from the outside to the inside increases the production waiting time. The steel pipe must undergo two independent spraying processes on the production line, resulting in frequent equipment start-ups and shutdowns, increased energy consumption, and inability to meet the needs of continuous production.

[0004] Therefore, in order to address the problem that existing seamless steel pipe spraying equipment can only spray the surface of the steel pipe first and then wait for the surface to dry before spraying the interior, which greatly reduces the efficiency of steel pipe spraying, a device for simultaneously spraying anti-corrosion layers on the inner and outer walls of seamless steel pipes can be designed to improve the efficiency of steel pipe spraying. Utility Model Content

[0005] In order to overcome the problem that existing seamless steel pipe spraying equipment can only spray the surface of the steel pipe first, and then wait for the surface of the steel pipe to dry before spraying the interior, which greatly reduces the efficiency of steel pipe spraying.

[0006] The technical solution of this utility model is as follows: a device for synchronously spraying anti-corrosion coating on the inner and outer walls of seamless steel pipes, including a support base, a movable base on the top of the support base, a support frame installed inside the movable base, and an external spray head installed inside the support frame; a spraying assembly on the top of the support base, the spraying assembly including a movable plate slidably connected to the top of the support base, a support pipe installed on the top of the movable plate, an internal spray head connected to one end of the support pipe, a liquid storage tank installed on one side of the movable plate, and a pressurized delivery pump connected to the top of the liquid storage tank; a rotating assembly on the top of the support base, the rotating assembly including a fixed frame installed on the top of the support base, a fixed ring installed on one side of the fixed frame, a snap ring movably connected inside the fixed ring, a toothed ring installed on the surface of the snap ring, a gear meshing with the top of the toothed ring, and a drive motor installed on one side of the fixed ring.

[0007] Preferably, the operator first inserts one end of the seamless steel pipe to be processed into the snap ring of the rotating assembly, while the other end is centered and fixed by the limiting sleeve on the stabilizing seat through the adjusting threaded rod. Then, the servo motor is started, and through screw transmission, the moving seat and the moving plate are driven to move synchronously along the guide rail plate, so that the support pipe carrying the inner nozzle extends into the steel pipe. At the same time, the support frame carrying the outer nozzle moves to a predetermined position outside the steel pipe. After the preparation is complete, the pressurized delivery pump and the drive motor are started simultaneously. The pressurized delivery pump extracts the anti-corrosion coating from the storage tank, and after being split through the three-way pipe, one path is sent through the support pipe to the inner nozzle to spray the inner wall of the steel pipe, and the other path is sent through the delivery pipe to the outer nozzle to spray the outer wall of the steel pipe. At the same time, the drive motor drives the gear to rotate through the drive shaft. The gear meshes with the toothed ring fixed on the snap ring, thereby driving the fixed steel pipe to rotate at a uniform speed. During this process, the nozzle system moves axially at a uniform speed, and the steel pipe itself rotates circumferentially at a uniform speed, ultimately forming a uniform and dense anti-corrosion coating on the inner and outer walls of the steel pipe.

[0008] Preferably, the spraying assembly further includes a servo motor mounted on the top of the support base and a screw mounted on the output end of the servo motor, the surface of which is threadedly connected to the inner wall of the movable base.

[0009] Preferably, a stabilizing seat is fixedly connected to the top of the support base, a threaded rod is threadedly connected inside the stabilizing seat, a fixed sleeve is movably connected to one end of the threaded rod, a limit sleeve is movably connected inside the fixed sleeve, and a slider is fixedly connected to the bottom of the fixed sleeve, with the slider slidably connected to the inner wall of the stabilizing seat.

[0010] Preferably, the output end of the drive motor is fixedly connected to a drive shaft, and the other end of the drive shaft is fixedly connected to a gear.

[0011] Preferably, the output end of the pressurized delivery pump is connected to a three-way pipe, one end of which is connected to a support pipe, and the other end of which is connected to a delivery pipe, and the other end of which is connected to an external nozzle.

[0012] Preferably, an auxiliary wheel is fixedly connected to the surface of the support tube, and the auxiliary wheel is arranged circumferentially around the support tube as the axis.

[0013] Preferably, a guide rail is fixedly connected between the movable seat and the movable plate, and the bottom of the guide rail is slidably connected to the support seat.

[0014] The beneficial effects of this utility model are as follows: By setting up the spraying component and the rotating component, the anti-corrosion coating is simultaneously supplied to the inner nozzle located at the front end of the support pipe and the outer nozzle located on the support frame through the pressurized delivery pump via the three-way pipe. This achieves simultaneous and uniform coverage of the inner and outer walls of the steel pipe, reduces the waiting time for curing between two sprayings, allows the equipment to operate continuously, significantly shortens the production cycle, and effectively reduces the frequent start-up and shutdown of the equipment, thus reducing energy consumption. By introducing the rotating component, the inner and outer nozzles move forward at a uniform speed in the axial direction, which significantly improves the density, adhesion, and overall reliability of the anti-corrosion performance of the coating. Attached Figure Description

[0015] Figure 1 The diagram shown is a three-dimensional structural schematic of Embodiment 1 of the device for synchronous spraying anti-corrosion coating on the inner and outer walls of a seamless steel pipe according to this utility model. Figure 2 The image shown is a cross-sectional view of the fixing ring and fixing sleeve in a device for synchronously spraying anti-corrosion coating on the inner and outer walls of a seamless steel pipe according to this utility model. Figure 3 The image shown is a cross-sectional view of the fixing ring in a device for synchronously spraying anti-corrosion coating on the inner and outer walls of a seamless steel pipe according to this utility model. Figure 4 The diagram shown is a structural schematic of the spraying component in a device for synchronously spraying anti-corrosion coating on the inner and outer walls of a seamless steel pipe according to this utility model. Figure 5 The diagram shown is a schematic representation of the internal structure of the support frame in a device for synchronously spraying anti-corrosion coating on the inner and outer walls of a seamless steel pipe according to this utility model.

[0016] Explanation of reference numerals in the attached drawings: 1. Support base; 2. Movable base; 3. Support frame; 4. External nozzle; 5. Spraying assembly; 501. Movable plate; 502. Support pipe; 503. Internal nozzle; 504. Liquid storage tank; 505. Pressurized delivery pump; 6. Rotating assembly; 601. Fixed frame; 602. Fixed ring; 603. Snap-fit ​​ring; 604. Gear ring; 605. Gear; 606. Drive motor; 7. Servo motor; 8. Screw; 9. Stabilizer; 10. Threaded rod; 11. Fixed sleeve; 12. Limiting sleeve; 13. Drive shaft; 14. T-connector; 15. Delivery pipe; 16. Auxiliary wheel; 17. Guide rail plate. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Example 1 Please see Figures 1-5This utility model provides an embodiment: It includes a support base 1, a movable base 2 on the top of the support base 1, a support frame 3 installed inside the movable base 2, and an external spray head 4 installed inside the support frame 3; a spraying assembly 5 is provided on the top of the support base 1, the spraying assembly 5 includes a movable plate 501 slidably connected to the top of the support base 1, a support pipe 502 installed on the top of the movable plate 501, an internal spray head 503 connected to one end of the support pipe 502, a liquid storage tank 504 installed on one side of the movable plate 501, and a pressurized delivery pump 505 connected to the top of the liquid storage tank 504; a rotating assembly 6 is provided on the top of the support base 1, the rotating assembly 6 includes a fixed frame 601 installed on the top of the support base 1, a fixed ring 602 installed on one side of the fixed frame 601, and a snap-fit ​​movably connected inside the fixed ring 602. The spraying assembly 5 includes a ring 603, a toothed ring 604 mounted on the surface of the snap ring 603, a gear 605 meshing with the top of the toothed ring 604, a drive motor 606 mounted on one side of the fixed ring 602, a servo motor 7 mounted on the top of the support base 1, a screw 8 mounted on the output end of the servo motor 7, the surface of the screw 8 being threadedly connected to the inner wall of the movable base 2, a stabilizing base 9 fixedly connected to the top of the support base 1, a threaded rod 10 threadedly connected inside the stabilizing base 9, a fixed sleeve 11 movably connected to one end of the threaded rod 10, a limit sleeve 12 movably connected inside the fixed sleeve 11, a slider fixedly connected to the bottom of the fixed sleeve 11, the slider being slidably connected to the inner wall of the stabilizing base 9, a drive shaft 13 fixedly connected to the output end of the drive motor 606, and the other end of the drive shaft 13 being fixedly connected to the gear 605.

[0019] During pipe spraying, the worker first inserts one end of the pipe into the snap ring 603, aligning the other end of the pipe with the limiting sleeve 12. Figure 1 As shown, the threaded rod 10 is then manually rotated. The threaded rod 10, in conjunction with the fixing sleeve 11, moves the limiting sleeve 12, causing the limiting sleeve 12 to engage with the other end of the pipe. The limiting sleeve 12 and the engaging ring 603 limit the pipe while ensuring that the pipe can rotate normally. Then, the servo motor 7 is started. The servo motor 7, in conjunction with the screw 8, moves the moving seat 2. The moving seat 2, in conjunction with the guide rail plate 17, moves the moving plate 501. The moving plate 501 moves the support pipe 502 and the inner nozzle 503 into the pipe. The moving seat 2 moves the support frame 3 and the outer nozzle 4 to the outside of the pipe. Then, the pressurized delivery pump 505 is started. The pressurized delivery pump 505 extracts the anti-corrosion coating from the storage tank 504, pressurizes it, and delivers it to the support pipe 502 and the delivery pipe 15. The coating is sprayed through the inner nozzle 503 to coat the inner wall of the pipe, and through the outer nozzle 4 to coat the outer surface of the pipe. The inner and outer coatings can be performed simultaneously, improving the coating efficiency.

[0020] Example 2 Please see Figure 1 and Figure 5The difference from Embodiment 1 is that the output end of the pressurized delivery pump 505 is connected to a three-way pipe 14, one end of the three-way pipe 14 is connected to the support pipe 502, the other end of the three-way pipe 14 is connected to the delivery pipe 15, the other end of the delivery pipe 15 is connected to the external nozzle 4, an auxiliary wheel 16 is fixedly connected to the surface of the support pipe 502, the auxiliary wheel 16 is arranged in a circle around the support pipe 502 as the axis, and a guide rail plate 17 is fixedly connected between the movable seat 2 and the movable plate 501, and the bottom of the guide rail plate 17 is slidably connected to the support seat 1.

[0021] During the spraying process, the drive motor 606 is started synchronously. The drive motor 606, together with the drive shaft 13, drives the gear 605 to rotate. The gear 605, together with the gear ring 604, drives the snap ring 603 to rotate. The snap ring 603 drives the pipe to rotate. When the pipe moves laterally under the drive of the servo motor 7, it can rotate synchronously, so that the inner nozzle 503 and the outer nozzle 4 are sprayed evenly, further improving the spraying effect of the pipe. The auxiliary wheel 16 can contact the inner wall of the pipe when the support tube 502 is inserted into the pipe, so that the support tube 502 always maintains the center position during the movement.

[0022] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A device for simultaneously spraying anti-corrosion coating on the inner and outer walls of a seamless steel pipe, comprising a support base (1), characterized in that, The support base (1) is provided with a movable base (2) on top, and a support frame (3) is installed inside the movable base (2). An external nozzle (4) is installed inside the support frame (3). The top of the support base (1) is provided with a spraying assembly (5). The spraying assembly (5) includes a movable plate (501) slidably connected to the top of the support base (1), a support pipe (502) installed on the top of the movable plate (501), an inner nozzle (503) connected to one end of the support pipe (502), a liquid storage tank (504) installed on one side of the movable plate (501), and a pressurized delivery pump (505) connected to the top of the liquid storage tank (504). The top of the support base (1) is provided with a rotating assembly (6). The rotating assembly (6) includes a fixed frame (601) installed on the top of the support base (1), a fixed ring (602) installed on one side of the fixed frame (601), a snap ring (603) movably connected inside the fixed ring (602), a toothed ring (604) installed on the surface of the snap ring (603), a gear (605) meshing with the top of the toothed ring (604), and a drive motor (606) installed on one side of the fixed ring (602).

2. The device for synchronously spraying anti-corrosion coating on the inner and outer walls of a seamless steel pipe according to claim 1, characterized in that: The spraying assembly (5) also includes a servo motor (7) installed on the top of the support base (1) and a screw (8) installed at the output end of the servo motor (7). The surface of the screw (8) is connected to the inner wall of the moving base (2) by a thread.

3. The device for synchronously spraying anti-corrosion coating on the inner and outer walls of a seamless steel pipe according to claim 1, characterized in that: The support base (1) is fixedly connected to the top of the stabilizer (9), and the stabilizer (9) is threadedly connected to the inside of the threaded rod (10). One end of the threaded rod (10) is movably connected to the fixed sleeve (11), and the fixed sleeve (11) is movably connected to the inside of the fixed sleeve (11). The bottom of the fixed sleeve (11) is fixedly connected to the slider, and the slider is slidably connected to the inner wall of the stabilizer (9).

4. The device for synchronously spraying anti-corrosion coating on the inner and outer walls of a seamless steel pipe according to claim 1, characterized in that: The output end of the drive motor (606) is fixedly connected to the drive shaft (13), and the other end of the drive shaft (13) is fixedly connected to the gear (605).

5. The device for synchronously spraying anti-corrosion coating on the inner and outer walls of a seamless steel pipe according to claim 1, characterized in that: The output end of the pressurized delivery pump (505) is connected to a three-way pipe (14). One end of the three-way pipe (14) is connected to the support pipe (502), and the other end of the three-way pipe (14) is connected to a delivery pipe (15). The other end of the delivery pipe (15) is connected to the external nozzle (4).

6. The device for synchronously spraying anti-corrosion coating on the inner and outer walls of a seamless steel pipe according to claim 1, characterized in that: An auxiliary wheel (16) is fixedly connected to the surface of the support tube (502), and the auxiliary wheel (16) is arranged in a circle around the support tube (502) as the axis.

7. The device for synchronously spraying anti-corrosion coating on the inner and outer walls of a seamless steel pipe according to claim 1, characterized in that: A guide rail plate (17) is fixedly connected between the movable seat (2) and the movable plate (501), and the bottom of the guide rail plate (17) is slidably connected to the support seat (1).

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