Cast pipe cleaning and heating integrated equipment

Abstract

The utility model relates to the technical field of cast pipe manufacturing, in particular to cast pipe cleaning and heating integrated equipment which comprises a cast pipe bearing and conveying device, a cast pipe outer wall high-pressure washing device and a cast pipe inner wall induction heating device. The cast pipe bearing and conveying device comprises a rotating carrier roller and a walking part, the rotating carrier roller is used for bearing the cast pipe and driving the cast pipe to rotate in the radial direction, and the walking part is used for driving the cast pipe to be fed in the axial direction; the cast pipe outer wall high-pressure washing device comprises a washing frame and a high-pressure water machine, the high-pressure water machine is arranged on the washing frame, and the high-pressure water machine is connected with a high-pressure water spray head for spraying high-pressure water to the outer wall of the rotating cast pipe; the cast pipe inner wall induction heating device comprises a machine body, a rod body and an induction heating head, one end of the rod body is arranged on the machine body, and the other end is provided with the induction heating head used for being inserted into the inner wall of a cast pipe to conduct induction heating on the inner wall of the cast pipe. According to the scheme, the temperature drop amplitude of the cast pipe is controlled or the temperature of the cast pipe is increased while the cleaning efficiency of the outer surface of the spheroidal graphite cast pipe is improved, and the subsequent heat treatment efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cast pipe manufacturing, in particular to a cast pipe cleaning and heating integrated device. Background Art

[0002] Ductile iron pipe is a kind of pipe widely used in fields such as water supply and gas pipelines. It is mostly made by centrifugal casting. After the ductile iron pipe is pulled out from the pipe mold, the pipe mold coating adhering to the outer surface needs to be cleaned.

[0003] At present, the shot blasting method is most commonly used to clean the pipe mold coating adhered to the outer surface of the ductile iron pipe. The disadvantages of the shot blasting method are large equipment investment and long operation time. The long operation time means a large temperature drop of the ductile iron pipe, and a long time is required to heat up after being sent into the annealing furnace.

[0004] If the cleaning efficiency of the outer surface of the ductile iron pipe can be improved while controlling the temperature drop of the ductile iron pipe, it will be of great benefit to the subsequent heat treatment process. Utility Model Content

[0005] The utility model is based on the needs raised by the background technology and provides an integrated cleaning and heating equipment for cast pipes, which can control the temperature drop of the cast pipes while improving the cleaning efficiency of the cast pipe outer surface, and even increase the temperature of the cast pipes, thereby improving the subsequent heat treatment efficiency.

[0006] The technical solution of the utility model is as follows:

[0007] An integrated equipment for cleaning and heating a cast pipe, comprising a cast pipe supporting and conveying device, a cast pipe outer wall high-pressure water washing device and a cast pipe inner wall induction heating device;

[0008] The cast pipe supporting and conveying device comprises a rotating roller and a running part, wherein the rotating roller is used to support the cast pipe and drive the cast pipe to rotate radially, and the running part is used to drive the cast pipe to feed axially;

[0009] The high-pressure water washing device for the outer wall of the cast pipe comprises a water washing frame and a high-pressure water machine, wherein the high-pressure water machine is arranged on the water washing frame and is connected to a high-pressure water nozzle, and the high-pressure water nozzle is used to spray high-pressure water to the outer wall of the rotating cast pipe;

[0010] The induction heating device for the inner wall of the cast pipe comprises a body, a rod body and an induction heating head. One end of the rod body is arranged on the body, and the other end is arranged with the induction heating head. The induction heating head is used to be inserted into the inner wall of the cast pipe to perform induction heating on the inner wall of the cast pipe.

[0011] Preferably, in the above-mentioned integrated cleaning and heating equipment for cast pipes, there are multiple groups of rotating rollers, at least one of which is a powered roller.

[0012] Preferably, in the above-mentioned integrated casting pipe cleaning and heating equipment, the water washing rack is a cover structure, and the cover structure forms a water washing chamber.

[0013] Preferably, in the above-mentioned integrated cast pipe cleaning and heating equipment, the high-pressure water machine is arranged on the top of the water washing rack.

[0014] Preferably, in the above-mentioned integrated equipment for cleaning and heating cast pipes, the high-pressure water machine can carry the high-pressure water nozzle and move left and right along the top of the water washing rack.

[0015] Preferably, in the above-mentioned integrated cleaning and heating equipment for cast pipes, the width of the water washing chamber in the axial direction of the cast pipe is smaller than the length of the cast pipe, and when the walking part drives the cast pipe to feed axially, the cast pipe can pass through the water washing chamber.

[0016] Preferably, in the above-mentioned integrated equipment for cleaning and heating of cast pipes, the machine body is a traveling trolley.

[0017] Preferably, in the above-mentioned integrated cleaning and heating equipment for cast pipes, a rotation driving assembly capable of driving the rod body to rotate is also provided on the machine body.

[0018] Preferably, in the above-mentioned integrated equipment for cleaning and heating of cast pipes, the machine body is capable of moving along a ground track.

[0019] Preferably, in the above-mentioned integrated equipment for cleaning and heating the cast pipe, the walking part of the machine body and the cast pipe supporting and conveying device can walk along the same ground track.

[0020] The beneficial effects of the utility model are:

[0021] The integrated cast pipe cleaning and heating equipment provided by the utility model first improves the cast pipe surface cleaning technology, and adopts a more efficient and environmentally friendly high-pressure water washing technology to specifically remove the pipe mold coating adhered to the outer surface of the cast pipe (ductile iron cast pipe), with lower investment, shorter time consumption and better cleaning effect.

[0022] The integrated cleaning and heating equipment for cast pipes provided by the utility model has a greater improvement in that it introduces induction heating of the inner wall of the cast pipe. By induction heating the inner wall of the cast pipe while performing high-pressure water washing on the outer surface of the cast pipe, not only can the temperature drop caused by the cooling effect of the liquid during high-pressure water washing be effectively controlled, but even after the cleaning process is completed, the temperature of the cast pipe (ductile iron cast pipe) can be increased compared with before, thereby reducing the heating time after being sent into the heat treatment furnace (annealing furnace) and improving the heat treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] By reading the detailed description of the preferred embodiment below, the scheme and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not considered to be limiting of the present invention.

[0024] In the attached picture:

[0025] Figure 1 The utility model is a structural schematic diagram of a cast pipe cleaning and heating integrated equipment.

[0026] Figure 2 It is a schematic diagram of a working feeding mode of a cast pipe cleaning and heating integrated equipment of the utility model.

[0027] Figure 3 This is a schematic diagram of another working feeding mode of a cast pipe cleaning and heating integrated equipment of the utility model.

[0028] The components represented by the reference numerals in the figure are:

[0029] Casting pipe supporting and conveying device 10, rotating roller 11, walking part 12;

[0030] A high-pressure water washing device 20 for the outer wall of the cast pipe, a water washing rack 21, a high-pressure water machine 22, and a high-pressure water nozzle 23;

[0031] The induction heating device 30 for the inner wall of the cast pipe comprises a machine body 31, a rod body 32, an induction heating head 33, and a rotary drive assembly 34;

[0032] Cast pipe 40. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] The embodiments of the present application are further described in detail below in conjunction with the drawings in the specification.

[0035] Example 1

[0036] like Figure 1 As shown, a cast pipe cleaning and heating integrated equipment includes a cast pipe supporting and conveying device 10, a cast pipe outer wall high-pressure water washing device 20 and a cast pipe inner wall induction heating device 30.

[0037] This embodiment takes the application in centrifugal casting of ductile iron pipes as an example. The integrated pipe cleaning and heating equipment is used for processing the ductile iron pipe after it is pulled out from the pipe mold and before it is sent to the annealing furnace. The purpose of cleaning is to clean the pipe mold coating adhered to the outer surface of the ductile iron pipe. The purpose of heating is to prevent the temperature of the ductile iron pipe from dropping and to increase the temperature appropriately, thereby increasing the temperature of the ductile iron pipe when it is sent to the annealing furnace and reducing the heating time in the annealing furnace.

[0038] Those skilled in the art should understand that, according to the concept of the present application, as long as the same or similar application requirements are met, the cast pipe referred to in the present invention may not be limited to ductile iron pipes, and the heat treatment referred to in the present invention may not be limited to annealing.

[0039] Reference Figure 1 The casting pipe supporting and conveying device 10 includes a rotating roller 11 and a walking part 12.

[0040] The rotating rollers 11 are used to support the casting pipe 40 and drive the casting pipe 40 to rotate radially. Generally, there are multiple groups. This embodiment shows two groups, at least one of which is a power roller. The walking part 12 is used to drive the casting pipe 40 to feed axially. This type of walking roller device is widely used in the prior art and will not be described in detail.

[0041] The first thing improved in this embodiment is the casting pipe surface cleaning technology, which adopts a more efficient and environmentally friendly high-pressure water washing technology to specifically remove the pipe mold coating adhered to the outer surface of the ductile cast pipe. As shown in the figure, the casting pipe outer wall high-pressure water washing device 20 adopted in this embodiment includes a water washing frame 21 and a high-pressure water machine 22. The high-pressure water machine 22 is arranged on the water washing frame 21. The high-pressure water machine 22 is connected to a high-pressure water nozzle 23. The high-pressure water nozzle 23 is used to spray high-pressure water onto the outer wall of the rotating casting pipe 40.

[0042] The high-pressure water machine 22 of this embodiment is arranged on the top of the water washing rack 21. The water washing rack 21 is a cover structure, which forms a water washing chamber, which can cover the splashed high-pressure water and the cleaned paint residue to prevent environmental pollution, and also facilitate the collection of water and residue to the collection pool on the ground. Since the cleaning process can be mainly completed with the help of the cast pipe supporting and conveying device 10, the high-pressure water machine 22 can be fed without feeding or only fed for a short distance, so the size of the water washing chamber does not need to be designed too large. As shown in the figure, the width of the water washing chamber in the axial direction of the cast pipe 40 is less than the length of the cast pipe 40, and can be only about one-half of the length of the cast pipe 40, and the longest does not exceed two-thirds of the length of the cast pipe 40. In this way, when the walking part 12 drives the cast pipe 40 to feed axially, the cast pipe 40 can pass through the water washing chamber.

[0043] As mentioned above, if the high-pressure water machine 22 needs to be fed over a short distance, the high-pressure water machine 22 only needs to be set as a walkable structure so that it can carry the high-pressure water nozzle 23 and move left and right along the top of the water washing rack 21.

[0044] The cast pipe outer wall high-pressure water washing device 20 of the utility model has lower equipment investment, shorter cleaning time and better cleaning effect.

[0045] Furthermore, a greater improvement of the present embodiment is the introduction of induction heating of the inner wall of the cast pipe. As shown in the figure, the cast pipe inner wall induction heating device 30 adopted in the present embodiment includes a machine body 31, a rod body 32 and an induction heating head 33. In the present embodiment, the machine body 31 is in the form of a walking trolley, one end of the rod body 32 is arranged on the machine body 31, and the other end is provided with the induction heating head 33. The induction heating head 33 is used to be inserted into the inner wall of the cast pipe 40 to perform induction heating on the inner wall of the cast pipe 40.

[0046] In order to improve the induction heating efficiency and induction heating effect, in this embodiment, a rotation drive assembly 34 for driving the rod body 32 to rotate is also provided on the body 31, which can drive the induction heating head 33 to rotate and perform efficient induction heating on the inner wall of the ductile iron pipe.

[0047] After the induction heating of the inner wall of the cast pipe is introduced, the present embodiment can effectively control the temperature drop caused by the cooling effect of the liquid during high-pressure water washing by induction heating the inner wall of the cast pipe while performing high-pressure water washing on the outer surface of the cast pipe, and can also increase the temperature of the ductile cast pipe after the cleaning process is completed, thereby reducing the heating time after being sent to the annealing furnace and improving the heat treatment efficiency.

[0048] Combine the following Figure 2 or Figure 3 The feeding method of the integrated equipment for cleaning and heating cast pipes during operation is described by way of example.

[0049] like Figure 2 As shown in the states from (A) to (C), when the integrated cast pipe cleaning and heating equipment of this embodiment is working, only the cast pipe supporting and conveying device 10 can carry the rotating cast pipe 40 to axially feed into the water washing chamber. After leaving the water washing chamber, the pipe section of the cast pipe 40 that has passed through the water washing will then be inserted into its inner wall by the induction heating head 33 and its inner wall will be heated. As the cast pipe 40 is continuously axially fed, the entire pipe section will successively undergo high-pressure water washing and inner wall induction heating. The induction heating not only offsets the temperature drop during high-pressure water washing, but also can increase the temperature of the final cast pipe 40. The cast pipe 40 with increased temperature can then be sent to the annealing furnace for heat treatment.

[0050] You can also Figure 3As shown in the states from (A) to (C), when the integrated cast pipe cleaning and heating equipment is working, on the one hand, the cast pipe supporting and conveying device 10 can carry the rotating cast pipe 40 to axially feed into the water washing chamber, and on the other hand, the body 31 of the cast pipe inner wall induction heating device 30 can be fed to the left with the induction heating head 33. The pipe section of the cast pipe 40 that has been washed with water is inserted into its inner wall by the induction heating head 33 and its inner wall is heated before it leaves the water washing chamber. As the cast pipe 40 is continuously fed axially to the right and the induction heating head 33 is continuously fed to the left, the entire pipe section will successively undergo high-pressure water washing and inner wall induction heating, which also plays a good role in offsetting the temperature drop during high-pressure water washing and increasing the temperature of the cast pipe 40.

[0051] Although not shown in the drawings, it is preferred that the machine body 31 in the present application be able to move along a ground track to prevent the induction heating head 33 from deviating from the center of the casting pipe 40. It is more preferred that the machine body 31 and the walking part 12 of the casting pipe supporting and conveying device 10 move along the same ground track to further ensure stability and centering during feeding.

[0052] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the disclosure scope involved in the present application is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the aforementioned disclosure concept.

Claims

1. A cast pipe cleaning and heating integrated equipment, characterized in that: It comprises a cast pipe supporting and conveying device (10), a cast pipe outer wall high-pressure water washing device (20) and a cast pipe inner wall induction heating device (30); The casting pipe supporting and conveying device (10) comprises a rotating roller (11) and a running part (12), wherein the rotating roller (11) is used to support the casting pipe (40) and drive the casting pipe (40) to rotate radially, and the running part (12) is used to drive the casting pipe (40) to feed axially; The cast pipe outer wall high-pressure water washing device (20) comprises a water washing frame (21) and a high-pressure water machine (22), wherein the high-pressure water machine (22) is arranged on the water washing frame (21), and the high-pressure water machine (22) is connected to a high-pressure water spray head (23), and the high-pressure water spray head (23) is used to spray high-pressure water onto the outer wall of the rotating cast pipe (40); The cast pipe inner wall induction heating device (30) comprises a machine body (31), a rod body (32) and an induction heating head (33); one end of the rod body (32) is arranged on the machine body (31), and the other end is provided with the induction heating head (33); the induction heating head (33) is used to be inserted into the inner wall of the cast pipe (40) to perform induction heating on the inner wall of the cast pipe (40).

2. The integrated equipment for cleaning and heating a cast pipe according to claim 1, characterized in that: There are multiple groups of rotating rollers (11), at least one of which is a powered roller.

3. The integrated equipment for cleaning and heating a cast pipe according to claim 1, characterized in that: The water washing rack (21) is a casing structure, and the casing structure forms a water washing chamber.

4. The integrated equipment for cleaning and heating a cast pipe according to claim 3, characterized in that: The high-pressure water machine (22) is arranged on the top of the water washing rack (21).

5. The integrated equipment for cleaning and heating a cast pipe according to claim 4, characterized in that: The high-pressure water machine (22) can carry the high-pressure water spray head (23) and move left and right along the top of the water washing rack (21).

6. The integrated equipment for cleaning and heating a cast pipe according to claim 3, characterized in that: The width of the water washing chamber in the axial direction of the casting pipe (40) is smaller than the length of the casting pipe (40), and when the walking part (12) drives the casting pipe (40) to feed axially, the casting pipe (40) can pass through the water washing chamber.

7. The integrated equipment for cleaning and heating a cast pipe according to any one of claims 1 to 6, characterized in that: The machine body (31) is a walking trolley.

8. The integrated equipment for cleaning and heating a cast pipe according to claim 7, characterized in that: The machine body (31) is also provided with a rotation driving assembly (34) capable of driving the rod body (32) to rotate.

9. The integrated equipment for cleaning and heating a cast pipe according to claim 7, characterized in that: The machine body (31) can move along a ground track.

10. The integrated equipment for cleaning and heating a cast pipe according to claim 9, characterized in that: The machine body (31) and the walking part (12) of the casting pipe supporting and conveying device (10) can walk along the same ground track.

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