Spheroidal graphite cast iron pipe body zinc spraying equipment

Abstract

The utility model relates to the technical field of cast iron pipe production equipment, and provides nodular cast iron pipe body zinc spraying equipment which comprises a cast pipe translation vehicle, an axial movement vehicle and a zinc spraying machine, the zinc spraying machine comprises a zinc spraying machine frame body, a dust removal pipeline and two groups of spraying guns; the two groups of spray guns are arranged on the zinc spraying rack body in parallel; the position of each spray gun is connected with a dust removal pipeline; the cast pipe translation vehicle is arranged in the vertical direction of the zinc spraying rack body; the cast pipe translation vehicle is provided with a lifting mechanism; the axial moving trolley is arranged below the zinc spraying rack body; the axial moving vehicle comprises an axial moving vehicle frame body; two groups of carrier roller mechanisms are arranged on the axial moving frame body in parallel; each group of carrier roller mechanism comprises two carrier roller motors which are oppositely arranged; and each carrier roller motor drives two carrier rollers to rotate. According to the utility model, a zinc spraying mode that the spray gun is fixed, and the cast pipe rotates and axially translates is adopted, so that the axial movement of the main body part of the zinc spraying equipment and the dust removal pipeline is avoided, and zinc powder is conveniently and better recycled.

Description

TECHNICAL FIELD

[0001] The utility model relates to cast iron pipe production equipment technical field especially relates to a nodular cast iron pipe body zinc spraying equipment. BACKGROUND

[0002] Nodular cast iron pipe (hereinafter referred to as cast pipe) is very popular at home and abroad, mainly used in urban water supply and drainage pipeline, oil and gas pipeline etc. Nodular cast iron pipe has many advantages such as thin wall, good toughness, high strength, corrosion resistance etc. Pipe body zinc spraying is a key link of nodular cast iron pipe surface treatment, through forming a layer of zinc coating on the metal surface, using the sacrificial anode protection of zinc, preventing the metal matrix from being corroded.

[0003] At present, the nodular cast iron pipe produced is mostly 6 meters long, and the zinc spraying mode adopts the production mode that the cast pipe rotates and the spray gun moves. The cast pipe is rotated by using the roller or the push rotation structure. The spray gun, zinc wire barrel, zinc spraying power supply and pneumatic pipeline components of the main part of the zinc spraying equipment are placed on the axial movement car above the cast pipe. When spraying zinc, the pipe is rotated by the roller or the push rotation structure, and the spray gun moves axially above or beside the cast pipe to spray a layer of zinc coating on the surface of the cast pipe.

[0004] However, the main part of the zinc spraying equipment needs to move, and the axial movement distance is large, which is prone to equipment failure, and is not convenient for maintenance and replacement. The space required by the equipment is also large. In the zinc spraying process, waste gas containing zinc powder and other particles is generated, which needs to be treated by a dust removal equipment and a filtering system to reduce air pollution. The dust removal pipeline of this mode of zinc spraying mostly adopts the pull-out pipe mode, and the dust removal pipeline moves together with the axial translation car, which makes it inconvenient to recover zinc powder and the dust removal pipeline is prone to damage. UTILITY MODEL CONTENTS

[0005] The utility model mainly solves the technical problems of the prior art nodular cast iron pipe body zinc spraying equipment that the main part needs to move, and the axial movement distance is large, which is prone to equipment failure, and is not convenient for maintenance and replacement, the space required by the equipment is also large and zinc powder recovery is not convenient, and proposes a nodular cast iron pipe body zinc spraying equipment, which adopts the zinc spraying mode that the spray gun is fixed, the cast pipe rotates and axially translates, avoids the axial movement of the main part of the zinc spraying equipment, and also avoids the axial movement of the dust removal pipeline, which facilitates better recovery of zinc powder.

[0006] The utility model provides a nodular cast iron pipe body zinc spraying equipment, which comprises a cast pipe translation car, an axial movement car and a zinc spraying machine.

[0007] The zinc spraying machine comprises a zinc spraying machine frame body, a dust removal pipeline and two groups of spray guns; the two groups of spray guns are arranged in parallel on the zinc spraying machine frame body; the number of spray guns in each group is three; and each spray gun is connected with the dust removal pipeline at a position thereof;

[0008] The cast pipe translation vehicle is arranged in the vertical direction of the zinc spraying machine frame body; and the cast pipe translation vehicle is provided with a lifting mechanism.

[0009] The axial movement vehicle is arranged below the zinc spraying machine frame body.

[0010] The axial movement vehicle comprises an axial movement vehicle frame body; and two groups of supporting roller mechanisms are arranged in parallel on the axial movement vehicle frame body.

[0011] Each group of supporting roller mechanisms comprises two oppositely arranged supporting roller motors; and each supporting roller motor drives two supporting rollers to rotate.

[0012] Preferably, the cast pipe translation vehicle comprises a cast pipe translation vehicle frame body.

[0013] At least one first traveling motor and a plurality of first wheels are arranged on the cast pipe translation vehicle frame body; and the first traveling motor is in transmission connection with the at least one first wheel.

[0014] Preferably, the lifting mechanism is arranged on the cast pipe translation vehicle frame body.

[0015] The lifting mechanism comprises a lifting oil cylinder, a lifting frame and a lifting mechanism V-shaped roller.

[0016] Four lifting oil cylinders are arranged at four corners of the cast pipe translation vehicle frame body.

[0017] The lifting oil cylinder is arranged upward; and the lifting oil cylinder is in connection with the lifting frame through an extension rod.

[0018] Two groups of lifting mechanism V-shaped rollers are arranged on the lifting frame.

[0019] A hinged frame is arranged between the cast pipe translation vehicle frame body and the lifting frame.

[0020] Preferably, at least one second traveling motor and a plurality of second wheels are arranged on the axial movement vehicle frame body; and the second traveling motor is in transmission connection with the at least one second wheel.

[0021] Preferably, a zinc wire barrel is arranged on the zinc spraying machine frame body; and the zinc wire led out from the zinc wire barrel is connected with the spray gun.

[0022] Preferably, the zinc wire led out from the zinc wire barrel is guided through a wire guide wheel set.

[0023] This utility model provides a zinc spraying device for ductile iron pipes, which changes the traditional zinc spraying method in the ductile iron pipe metallurgical industry. It features dual zinc spraying stations for automatic online zinc spraying. The zinc spraying method uses a fixed spray gun and a rotating and axially shifting cast pipe, avoiding axial movement of the main body of the zinc spraying device and the dust collection pipeline, facilitating better zinc powder recovery. The short axial movement distance makes full use of space and allows for flexible production adjustments. Furthermore, by adjusting the spacing of the rollers in each set of roller mechanisms, different lengths of cast pipes can be processed, further reducing operating costs. This utility model's pipe body zinc spraying device has a simple and reasonable structure, is modularly manufactured and assembled, has relatively low installation and maintenance requirements, a low failure rate, and reduced operating and maintenance costs, while also facilitating inspection and replacement. The process structure is relatively simple and inexpensive, with a clever design that improves production efficiency and reduces maintenance costs. It can automatically spray zinc online onto the body of cast pipes with a standard length of 6 meters and a diameter of DN80-DN2600, and can be used for a long period. Therefore, it can be said that the zinc spraying equipment for ductile iron pipes of this invention possesses multiple advantages, enabling online automatic zinc spraying on production lines in the ductile iron pipe metallurgical industry. This invention is suitable for widespread application in this field and has a very broad market prospect. Attached Figure Description

[0024] Figure 1 This is a front view of the zinc spraying equipment for ductile iron pipes provided by this utility model;

[0025] Figure 2 This is a left view of the zinc spraying equipment for ductile iron pipes provided by this utility model;

[0026] Figure 3 This is a top view of the zinc spraying equipment for ductile iron pipes provided by this utility model;

[0027] Figure 4 This is the front view of the cast iron pipe translation vehicle provided by this utility model;

[0028] Figure 5 This is a left view of the pipe casting translation vehicle provided by this utility model;

[0029] Figure 6 This is a top view of the pipe casting translation vehicle provided by this utility model;

[0030] Figure 7 This is a front view of the axially moving vehicle provided by this utility model;

[0031] Figure 8 This is a left view of the axially moving vehicle provided by this utility model;

[0032] Figure 9 This is a top view of the axially moving vehicle provided by this utility model.

[0033] Fig. 1 is a cast pipe; 2 is a cast pipe translation vehicle; 3 is an axial movement vehicle; 4 is a dust removal pipeline; 5 is a zinc spraying machine frame body; 6 is a spray gun; 7 is a zinc spraying power supply; 8 is a zinc wire barrel; 9 is a zinc wire; 10 is a wire guide roller set; 201 is a cast pipe translation vehicle frame body; 202 is a first walking motor; 203 is a lifting oil cylinder; 204 is a lifting frame; 205 is a lifting mechanism V-shaped roller; 206 is a hinged frame; 301 is an axial movement vehicle frame body; 302 is a second walking motor; 303 is a roller motor; 304 is a roller. DETAILED DESCRIPTION

[0034] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the utility model will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the parts related to the utility model are shown in the drawings, not all the contents.

[0035] As shown in Figures 1-3 The utility model embodiment provides a nodular cast iron pipe body zinc spraying equipment, which comprises a cast pipe translation vehicle 2, an axial movement vehicle 3 and a zinc spraying machine.

[0036] The zinc spraying machine comprises a zinc spraying machine frame body 5, a dust removal pipeline 4 and two groups of spray guns 6; the two groups of spray guns 6 are arranged in parallel on the zinc spraying machine frame body 5; the number of each group of spray guns 6 is three, and the three spray guns 6 of each group are arranged along the length direction of the zinc spraying machine frame body 5; the distance between the spray gun 6 and the cast pipe 1 is 150-200mm. The two groups of spray guns 6 spray two cast pipes 1. The position of each spray gun 6 is connected with the dust removal pipeline 4, and the waste gas containing zinc powder and other particles generated in the zinc spraying process is treated to reduce air pollution.

[0037] The zinc spraying machine frame body 5 adopts a steel structure platform, a zinc wire barrel 8 is arranged on the zinc spraying machine frame body 5, and the zinc wire led out of the zinc wire barrel 8 is connected with the spray gun 6. The zinc wire led out of the zinc wire barrel 8 is guided through the wire guide roller set 10. The zinc spraying power supply 7 is arranged on the zinc spraying machine frame body 5 to supply power to the zinc spraying machine.

[0038] As shown in Figures 4-6As shown, the pipe casting translating carriage 2 is arranged vertically to the zinc spraying machine frame 5, and can pass underneath the zinc spraying machine frame 5. The pipe casting translating carriage 2 travels in a direction perpendicular to the axial direction. The travel track of the pipe casting translating carriage 2 is divided into three sections. The first section of the travel track is located on one side of the zinc spraying machine frame 5, the third section of the travel track is on the other side of the zinc spraying machine frame 5, and the second section of the travel track is located at the bottom end of the axial moving carriage frame 301. Dividing the travel track of the pipe casting translating carriage 2 into three sections does not affect the axial movement of the axial moving carriage 3. The second section of the travel track of the pipe casting translating carriage 2 is movable. When the axial moving carriage 3 is in the starting zinc spraying position, the three sections of the travel track connect to form the complete travel track of the pipe casting translating carriage 2.

[0039] The pipe casting translation vehicle 2 includes: a pipe casting translation vehicle frame 201; at least one first travel motor 202 and a plurality of first wheels are provided on the pipe casting translation vehicle frame 201, and the first travel motor 202 is hygienically connected to at least one first wheel. The first travel motor 202 drives the pipe casting translation vehicle 2 to move along its travel track in a direction perpendicular to the axial direction.

[0040] The pipe casting tractor 2 has a lifting mechanism. The lifting mechanism is mounted on the tractor frame 201 and includes: lifting cylinders 203, a lifting frame 204, and lifting mechanism V-rollers 205. Four lifting cylinders 203 are located at the four corners of the tractor frame 201. The lifting cylinders 203 face upwards, and their extension rods are connected to the lifting frame 204. Two sets of lifting mechanism V-rollers 205 are mounted on the lifting frame 204. A hinge frame 206 is provided between the tractor frame 201 and the lifting frame 204. The extension rods of the lifting cylinders 203 extend and can lift the pipe casting 1 via the lifting frame 204 and the lifting mechanism V-rollers 205. The two sets of lifting mechanism V-rollers 205 can lift two pipe castings 1.

[0041] like Figures 7-9 As shown, the axial moving vehicle 3 is arranged below the zinc spraying machine frame 5, and the axial moving vehicle 3 can move axially along the casting pipe 1 below the zinc spraying machine frame 5.

[0042] The axial moving vehicle 3 includes an axial moving vehicle frame 301. The travel track of the axial moving vehicle 3 is arranged along the axial direction of the casting pipe 1, that is, parallel to the direction in which each set of spray guns 6 is arranged. Two sets of roller mechanisms are arranged in parallel on the axial moving vehicle frame 301. Each set of roller mechanisms includes two opposing roller motors 303; each roller motor 303 drives two rollers 304 to rotate. The two sets of roller mechanisms drive the two casting pipes 1 to rotate.

[0043] The axial movement vehicle body 301 is provided with at least one second walking motor 302 and a plurality of second wheels, and the second walking motor 302 is in transmission connection with the at least one second wheel.

[0044] The working process of the zinc spraying equipment for the ductile cast iron pipe body is as follows:

[0045] I. The cast pipe translation vehicle 2 transports two cast pipes 1 along the direction perpendicular to the axial direction to below the zinc spraying rack body 5; the cast pipe translation vehicle 2 is lifted to lift the two cast pipes 1, and the two cast pipes 1 are placed on the two groups of supporting roller mechanisms of the axial movement vehicle 3. The cast pipe translation vehicle 2 walks to the third walking track, and waits for the zinc spraying of the cast pipes 1.

[0046] II. The two groups of supporting roller mechanisms of the axial movement vehicle 3 drive the two cast pipes 1 to continuously rotate, and the axial movement vehicle 3 moves along the axial direction with the two cast pipes 1 below the zinc spraying rack body 5.

[0047] III. During the axial movement of the cast pipes 1, the zinc spraying gun 6 starts to spray zinc.

[0048] IV. When the axial movement vehicle 3 moves along the axial direction for about 2 meters, the axial movement vehicle 3 starts to return; the axial movement vehicle 3 returns to the position where the zinc spraying starts, the zinc spraying gun 6 stops spraying zinc, and the zinc spraying on the surface of the cast pipes 1 is completed.

[0049] V. The cast pipe translation vehicle 2 returns to below the zinc spraying rack body 5, transports the cast pipes 1 after the zinc spraying away from the zinc spraying machine station, and one zinc spraying cycle is completed.

[0050] The linkage between the devices can be controlled by sensors respectively to ensure the linkage and interlocking of each action.

[0051] The utility model has two zinc spraying stations, can be used for spraying zinc layer on the pipe body of the ductile cast iron pipe, adopts the zinc spraying mode of the fixed zinc spraying gun, the rotating cast pipe and the axial translation, can automatically and on-line spray zinc on the pipe body of the cast pipe 1 with the standard length of 6 meters and the pipe diameter of DN80-DN2600, and can be used for a long time.

[0052] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: the technical solutions recorded in the foregoing embodiments are modified, or some or all of the technical features are replaced equivalently, without making the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A duct body zinc spraying apparatus for ductile cast iron pipe, characterized by, The invention relates to a zinc spraying machine. The zinc spraying machine comprises a zinc spraying machine frame (5), a dust removal pipeline (4) and two groups of zinc spraying guns (6). The two groups of zinc spraying guns (6) are arranged in parallel on the zinc spraying machine frame (5). Each group of zinc spraying guns (6) comprises three zinc spraying guns (6). The cast pipe translation vehicle (2) is arranged in the vertical direction of the zinc spraying machine frame (5). The cast pipe translation vehicle (2) comprises a cast pipe translation vehicle frame (201). The cast pipe translation vehicle frame (201) is provided with at least one first walking motor (202) and a plurality of first wheels.

2. The ductile iron pipe body zinc spraying apparatus according to claim 1, characterized by, The first walking motor (202) is in driving connection with at least one first wheel. The lifting mechanism is arranged on the cast pipe translation vehicle frame (201).

3. The ductile iron pipe body zinc spraying apparatus according to claim 2, characterized by, The lifting mechanism comprises a lifting oil cylinder (203), a lifting frame (204) and a lifting mechanism V-shaped roller (205). Four lifting oil cylinders (203) are arranged at the four corners of the cast pipe translation vehicle frame (201). The lifting oil cylinder (203) is arranged upwardly. The lifting oil cylinder (203) is in connection with the lifting frame (204) through a telescopic rod. The lifting frame (204) is provided with two groups of lifting mechanism V-shaped rollers (205). A hinged frame (206) is arranged between the cast pipe translation vehicle frame (201) and the lifting frame (204).

4. The ductile iron pipe body zinc spraying apparatus according to claim 1, characterized in that, The axial movement vehicle frame (301) is provided with at least one second walking motor (302) and a plurality of second wheels.

5. The ductile iron pipe body zinc spraying apparatus according to claim 1, wherein The second walking motor (302) is in driving connection with at least one second wheel.

6. The ductile iron pipe body zinc spraying apparatus according to claim 5, characterized by, The zinc wire barrel (8) is arranged on the zinc spraying machine frame (5). The zinc wire drawn out of the zinc wire barrel (8) is connected with the zinc spraying gun (6). The zinc wire drawn out of the zinc wire barrel (8) is guided through a wire guide wheel set (10).

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