A ductile cast iron pipe zinc spraying device

Abstract

The utility model provides a ductile cast iron pipe zinc spraying device belongs to pipeline spraying technical field, including the track of being placed in the upper portion of pipeline, the track length direction is parallel with the pipeline length direction each other, is equipped with the sliding block on the track and slides, the dust cover is equipped with through the lifting mechanism on the sliding block bottom, and the lifting mechanism is used for driving dust cover moves up and down, and a plurality of spray guns are fixed on the dust cover, the utility model discloses can adjust the height of dust cover through the lifting mechanism to height of spray gun can be adjusted indirectly, so that the zinc spraying device can be used for spraying different pipelines, and the zinc spraying quality of different pipelines can be kept stable.

Description

Technical Field

[0001] This utility model relates to the technical field of pipeline spraying equipment, specifically to a zinc spraying device for ductile iron pipes. Background Technology

[0002] In the production of ductile iron pipes, the external coating process is a crucial step affecting the product's appearance quality and corrosion resistance. Traditional external coating devices typically employ a fixed spray gun structure with a track above the pipe. The spray gun is fixed to a slider on the track, and the slider moves the spray gun along the track to perform zinc spraying on the rotating pipe.

[0003] Although the above-mentioned equipment can be used to spray coatings on pipes, the pipe diameters vary in actual production, resulting in different relative distances between the outer surface of different pipes and the spray gun. This affects the uniformity of the zinc spraying quality. Utility Model Content

[0004] In view of this, the present invention provides a zinc spraying device for ductile iron pipes. The present invention can adjust the height of the dust hood by adjusting the lifting mechanism, thereby indirectly adjusting the height of the spray gun. This allows the zinc spraying device to maintain a stable zinc spraying quality for different pipes.

[0005] To solve the above-mentioned technical problems, this utility model provides a zinc spraying device for ductile iron pipes, including a track placed above the pipe, the length direction of the track being parallel to the length direction of the pipe, a slider slidingly mounted on the track, a dust removal hood mounted at the bottom of the slider via a lifting mechanism, the lifting mechanism being used to drive the dust removal hood to move up and down, and several spray guns fixed on the dust removal hood, the spray guns being able to spray zinc onto the outer surface of the rotating pipe.

[0006] The lifting mechanism includes several bearing seats mounted on the slider. Each bearing seat has a rotatable roller. The shaft of each roller is directly or indirectly connected to the drive component. The drive component can drive the roller to rotate on the bearing seat. Each roller is wound with a traction line. The rotation of the roller can cause the traction line to move. The end of the traction line is connected to the top of the dust collector hood. The displacement of the traction line can cause the dust collector hood to move up and down.

[0007] The slider has an inverted T-shaped cross-section. The bearing seat is fixed at the step of the slider. A drive motor is also installed at the step of the slider. The output shaft of the drive motor is connected to the rotating shaft of the roller.

[0008] There are four bearing housings, and the four traction lines are connected to the four corners of the top of the dust collector hood, which makes the dust collector hood more stable during its up and down movement.

[0009] The roller has an I-shaped cross-section, preventing the traction line from detaching from the end of the roller.

[0010] A guide structure is also provided between the dust collector hood and the slide bar to prevent the dust collector hood from shaking, thereby ensuring the quality of zinc spraying in the pipeline.

[0011] The guiding structure includes a guide rod located at the bottom of the slider, and a guide hole is provided on the dust cover corresponding to the guide rod, into which the guide rod can be inserted.

[0012] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0013] 1. Stable zinc spraying quality adaptable to various pipe specifications:

[0014] Traditional fixed spray gun structures, lacking height adjustment, struggle to adapt to the coating requirements of pipes with varying diameters, resulting in uneven zinc spray thickness. This device addresses this by using a lifting mechanism to move the dust hood up and down, indirectly adjusting the distance between the spray gun and the pipe's outer surface, ensuring consistent zinc spray quality across pipes of different specifications. Experiments show that for ductile iron pipes ranging from DN80 to DN300mm, the zinc spray thickness deviation can be controlled within ±5μm.

[0015] 2. Structural optimization and reliability improvement of the lifting mechanism:

[0016] The four-traction line symmetrical layout: The dust removal hood is connected to the top four corners by four traction lines. Combined with the stepped bearing seat distribution of the inverted T-shaped slider, the horizontal stability of the lifting process is achieved, avoiding spraying deviation caused by unilateral tilting.

[0017] I-beam roller anti-slip design: The roller cross-section adopts an I-beam structure, which effectively prevents the traction line from slipping off the rim during winding, reducing the equipment failure rate.

[0018] Direct drive motor transmission: The output shaft of the drive motor is directly connected to the roller shaft, eliminating intermediate transmission components, improving transmission efficiency and reducing maintenance points.

[0019] 3. Anti-shake guiding system ensures spraying accuracy:

[0020] The sliding fit between the guide rod and the guide hole forms a rigid constraint, which effectively suppresses the lateral swaying of the dust collector hood during lifting or sliding movement.

[0021] 4. Improved environmental friendliness:

[0022] The dust hood rises and falls synchronously with the spray gun, always maintaining coverage of the zinc spraying area. Combined with the built-in negative pressure dust collection system, it reduces the concentration of zinc powder diffusion and improves the working environment. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a zinc spraying device for ductile iron pipe according to the present invention;

[0024] Figure 2 This utility model Figure 1 A schematic diagram of the structure at point A in the middle.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Track; 2. Slider; 3. Dust hood; 4. Spray gun; 5. Drive motor; 6. Bearing housing; 7. Roller; 8. Traction line; 9. Guide rod. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-2 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0028] This embodiment provides a zinc spraying device for ductile iron pipes, such as... Figure 1 As shown: It includes a linear track fixed above the pipe, the length of the track is consistent with and parallel to the length of the pipe, a slider is slidably provided at the bottom of the track, a dust hood is provided at the bottom of the slider through a lifting mechanism, and a spray gun is provided at the bottom of the dust hood. The spray gun can spray zinc on the outer surface of the pipe. Therefore, when changing to different pipes for zinc spraying, the dust hood can be moved up and down by the lifting mechanism, thereby adjusting the relative distance between the spray gun and the pipe, thus stabilizing the zinc spraying quality.

[0029] Furthermore, the slider moves on the track via a screw, and the end of the screw is connected to a motor. When the motor is working, it drives the slider to move at a constant speed, thus making the movement of the dust hood and spray gun relatively stable.

[0030] Specifically, the slider has an inverted T-shaped structure, meaning it is stepped, such as... Figure 1 , 2 As shown: It has two steps. The lifting mechanism includes a drive motor and a bearing seat mounted on the steps of the slider. A rotating shaft is rotatably mounted inside the bearing seat. A roller is coaxially mounted at the end of the rotating shaft. The other end of the rotating shaft is connected to the output shaft of the drive motor, which can drive the roller to rotate. A traction line is also provided corresponding to the roller. The traction line is made of steel wire rope, which can ensure the structural strength of the traction line. One end of the traction line is fixedly connected to the roller. When the roller rotates, the traction line can be wound around the roller. The other end of the traction line is connected to the top of the dust collector hood. Thus, when the drive motor works, it can drive the dust collector hood to move up and down.

[0031] Preferably, there are four drive motors and four bearing housings, which means there are also four traction lines. The four traction lines are connected to the four corners of the top of the dust collector hood, which makes the up-and-down movement of the dust collector hood more stable.

[0032] Preferably, the roller has an I-shaped cross-section, meaning that the traction rope will not fall off the end of the roller when it is wound around the roller.

[0033] It is worth mentioning that a guide structure is also provided between the dust collector hood and the sliding rod to prevent the dust collector hood from shaking. Figure 1 As shown: The guide structure includes a guide rod set at the bottom of the slider, and a guide hole is provided on the dust collector hood corresponding to the guide rod. The guide rod can be inserted into the guide hole. The guide rod and the guide hole can be used to guide the dust collector hood, that is, the dust collector hood will not be tilted when it moves up and down, and it will not sway back and forth under the influence of acceleration when the slider moves the dust collector hood.

[0034] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A zinc spraying device for ductile iron pipes, characterized in that, Includes a track (1) placed above the pipe, the length direction of the track (1) is parallel to the length direction of the pipe, a slider (2) is slidably provided on the track (1), and a dust removal hood (3) is provided at the bottom of the slider (2) through a lifting mechanism. The lifting mechanism is used to drive the dust removal hood (3) to move up and down, and several spray guns (4) are fixed on the dust removal hood (3).

2. The zinc spraying device for ductile iron pipe as described in claim 1, characterized in that, The lifting mechanism includes several bearing seats (6) set on the slider (2), each bearing seat (6) is rotatably equipped with a roller (7), the shaft of each roller (7) is directly or indirectly connected to the driving component, and each roller (7) is wound with a traction line (8), the end of the traction line (8) is connected to the top of the dust removal hood (3).

3. The zinc spraying device for ductile iron pipe as described in claim 2, characterized in that, The slider (2) has an inverted T-shaped cross section. The bearing seat (6) is fixed at the step of the slider (2). The step of the slider (2) is also provided with a drive motor (5). The output shaft of the drive motor (5) is connected to the rotating shaft of the roller (7).

4. The zinc spraying device for ductile iron pipe as described in claim 2, characterized in that, The bearing housing (6) is provided with 4, and the 4 traction lines (8) are respectively connected to the 4 corners of the top of the dust cover (3).

5. The zinc spraying device for ductile iron pipe as described in claim 2, characterized in that, The roller (7) has an I-shaped cross-section.

6. A zinc spraying device for ductile iron pipes as described in any one of claims 1-5, characterized in that, A guide structure is also provided between the dust cover (3) and the slide rod to prevent the dust cover (3) from shaking.

7. The zinc spraying device for ductile iron pipe as described in claim 6, characterized in that, The guide structure includes a guide rod (9) set at the bottom of the slider (2), and a guide hole is provided on the dust cover (3) corresponding to the guide rod (9), and the guide rod (9) can be inserted into the guide hole.

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