Steam heating device for nodular cast iron pipe

Abstract

The utility model relates to the technical field of nodular cast iron pipe production equipment, and particularly discloses a nodular cast iron pipe steam heating device which comprises a nodular cast iron pipe, push plate mechanisms are arranged on the spigot side and the socket side of the nodular cast iron pipe, and each push plate mechanism comprises a power assembly and a push plate. The power assembly on the spigot side controls the push plates to be pushed out of the plugging spigot, the power assembly on the socket side controls the push plates to be pushed out of the plugging socket, a steam inlet is formed in the push plate on one side, and a steam outlet is formed in the push plate on the other side. According to the nodular cast iron pipe spraying device, the power assembly is adopted to push the push plates to seal and plug the two ports of the nodular cast iron pipe, steam of the waste heat boiler is introduced into the nodular cast iron pipe through the pipeline to preheat the nodular cast iron pipe, surface sprayed paint can be rapidly dried after the nodular cast iron pipe is painted, and meanwhile waste heat is effectively utilized to generate steam for preheating; the utilization efficiency of resources is improved, the production cost is greatly reduced, and meanwhile the production efficiency is improved on the whole.

Description

Technical Field

[0001] The utility model belongs to the technical field of ductile iron pipe production equipment, and particularly relates to a ductile iron pipe steam heating device. Background Art

[0002] After the production of ductile iron pipes, it is necessary to spray paint on the surface of the pipes. In the existing technology, the paint is usually blown dry by a fan on the painted pipe fittings, or the pipe fittings are placed in a baking room or oven with natural gas as fuel to dry, or the pipe fittings are allowed to dry naturally. In the above schemes, the painted pipe fittings need to be transported and handled repeatedly. The paint that is not completely dry will cause pollution to the environment during transportation. The paint will also have a certain flow, resulting in uneven paint on the surface of the ductile iron pipe, affecting the quality of the paint, and even requiring rework, increasing the amount of repeated work. At the same time, the drying time is still long, and the drying effect is not ideal. There is a problem of uneven drying, which seriously affects the quality of the paint. In addition, the investment in equipment such as continuously running fans will increase additional electricity consumption, and the investment in fuels such as natural gas will not only increase production costs, but also inevitably pose certain safety hazards. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art and solve the problems existing in the prior art, the utility model provides a ductile iron pipe steam heating device.

[0004] The utility model is achieved through the following technical solutions.

[0005] The utility model provides a ductile iron pipe steam heating device, comprising a ductile iron pipe, a weight-supporting wheel is arranged below the ductile iron pipe, a push plate mechanism is arranged on the spigot side and the socket side of the ductile iron pipe, two groups of the push plate mechanisms each include a power component and a push plate, the power component on the spigot side can control the corresponding push plate to be pushed out to block the spigot, and the power component on the socket side can control the corresponding push plate to be pushed out to block the socket, a steam inlet is arranged on the push plate on one side, and a steam outlet is arranged on the push plate on the other side, and the steam inlet and the steam outlet can be connected through the blocked ductile iron pipe.

[0006] As a further improvement of the above solution, the power assembly includes a cylinder, a mounting bracket is provided corresponding to the cylinder, the cylinder is installed on the top of the cylinder, and the push rod of the cylinder is connected to the push plate on the corresponding side.

[0007] As a further improvement of the above solution, a bearing seat is provided on the mounting frame, and the bearing seat is slidably connected to a guide rod, and one end of the guide rod is connected to the push plate on the corresponding side.

[0008] As a further improvement of the above solution, the push rod and guide rod of the cylinder are fixedly connected to the corresponding side push plate through a flange assembly.

[0009] As a further improvement of the above solution, the flange assembly includes a rod end flange and a matching flange, the rod end flange is fixedly arranged on the push rod and the guide rod of the cylinder, and the matching flange is fixedly arranged on the push plate.

[0010] As a further improvement of the above solution, a rubber sealing layer is provided on the side of the push plate facing the ductile iron pipe.

[0011] As a further improvement of the above solution, a plurality of reinforcing ribs distributed in a ring array are constructed on the side of the push plate facing away from the ductile iron pipe.

[0012] As a further improvement of the above solution, the steam inlet is connected to one end of the connecting pipe A through a joint A, the other end of the connecting pipe A is connected to one end of the steam pipe, and the other end of the steam pipe is connected to the waste heat boiler on the top of the annealing furnace. A solenoid valve and a ball valve A are provided on the steam pipe.

[0013] As a further improvement of the above solution, the steam outlet is connected to one end of a connecting pipe B through a joint B, and the other end of the connecting pipe B is connected to a steam exhaust pipe, on which a ball valve B is provided.

[0014] The beneficial effects achieved by the utility model are:

[0015] Compared with the existing technology, the utility model places the ductile iron pipe on the supporting wheel before the pipe painting operation, uses the power component to push the push plate to seal the two ends of the ductile iron pipe, and introduces the steam of the waste heat boiler on the top of the annealing furnace into the ductile iron pipe through the pipeline through the provided steam inlet and steam outlet, so as to preheat the ductile iron pipe to be painted in advance and evenly, so that the paint on the surface of the ductile iron pipe can dry quickly after painting, thereby greatly improving the painting efficiency. At the same time, it rationally integrates resources and effectively uses waste heat to generate steam for preheating, thereby improving the utilization efficiency of resources. Compared with the existing technology, it greatly reduces the production cost while improving the production efficiency as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a ductile iron pipe steam heating device in the utility model;

[0017] Figure 2 It is a structural diagram of the power component in the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the push plate in the utility model;

[0019] Figure 4 It is a structural diagram of the steam inlet in the utility model;

[0020] Figure 5 It is a structural schematic diagram of the steam outlet in the utility model.

[0021] In the figure: ductile iron pipe 1, socket 101, socket 102, support wheel 2, power assembly 3, cylinder 301, mounting frame 302, bearing seat 303, guide rod 304, push plate 4, steam inlet 401, steam outlet 402, flange assembly 5, rod end flange 501, mating flange 502, rubber sealing layer 6, reinforcing rib 7, joint A8, connecting pipe A9, steam pipe 10, solenoid valve 11, ball valve A12, joint B13, connecting pipe B14, steam discharge pipe 15, ball valve B16. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0023] like Figures 1 to 2 As shown, a ductile iron pipe steam heating device includes a ductile iron pipe 1, a weight-supporting roller 2 is provided below the ductile iron pipe 1, and push plate mechanisms are provided on both the socket 101 side and the bell 102 side of the ductile iron pipe 1. Both push plate mechanisms include a power assembly 3 and a push plate 4. The power assembly 3 on the socket 101 side controls the corresponding push plate 4 to be pushed out to block the socket 101, and the power assembly 3 on the bell 102 side controls the corresponding push plate 4 to be pushed out to block the bell 102. In this embodiment, the push plate 4 is a steel plate.

[0024] Specifically, power assembly 3 includes a cylinder 301, with a mounting bracket 302 corresponding to cylinder 301. Cylinder 301 is mounted on the top of cylinder 301, and the push rod of cylinder 301 is connected to the push plate 4 on the corresponding side. In this embodiment, cylinder 301 has a bore of 250 mm, a rod diameter of 50 mm, a stroke of 550 mm, an operating pressure of 0.4-0.5 MPa, and a test pressure of 1.0 MPa.

[0025] Furthermore, a bearing seat 303 is provided on the mounting frame 302, and a guide rod 304 is slidably connected to the bearing seat 303, and one end of the guide rod 304 is connected to the push plate 4 on the corresponding side. There are two guide rods 304, and they are symmetrically arranged on both sides of the cylinder 301.

[0026] Furthermore, the push rod and the guide rod 304 of the cylinder 301 are fixedly connected to the corresponding side push plate 4 through the flange assembly 5.

[0027] Specifically, the flange assembly 5 includes a rod end flange 501 and a matching flange 502 . The rod end flange 501 is fixedly mounted on the push rod and the guide rod 304 of the cylinder 301 , and the matching flange 502 is fixedly mounted on the push plate 4 .

[0028] Furthermore, a rubber sealing layer 6 is provided on one side of the push plate 4 facing the ductile iron pipe 1 , and the rubber sealing layer 6 seals the ductile iron pipe 1 to prevent steam leakage.

[0029] Furthermore, a plurality of reinforcing ribs 7 arranged in a circular array are constructed on the side of the push plate 4 facing away from the ductile iron pipe 1. The reinforcing ribs 7 are angle steels, and the arrangement of the reinforcing ribs 7 can strengthen the push plate 4, prevent deformation of the push plate 4 after long-term use, and increase the service life of the push plate 4.

[0030] Specifically, the steam inlet 401 is connected to one end of the connecting pipe A9 through the joint A8, the other end of the connecting pipe A9 is connected to one end of the steam pipe 10, and the other end of the steam pipe 10 is connected to the waste heat boiler on the top of the annealing furnace. The steam pipe 10 is provided with a solenoid valve 11 and a ball valve A12.

[0031] Specifically, the steam outlet 402 is connected to one end of a connecting pipe B14 through a joint B13 , and the other end of the connecting pipe B14 is connected to a steam exhaust pipe 15 , on which a ball valve B16 is provided.

[0032] Specifically, in this embodiment, the connecting pipe A9 and the connecting pipe B14 are both metal hoses, and the connector A8 and the connector B13 are both single-filament connectors.

[0033] The working process of this utility model is as follows:

[0034] When the device is in use, the cylinders 301 on both sides of the ductile iron pipe are controlled by compressed air to simultaneously push the push plate 4. After the push plate 4 is in place, the rubber sealing layer 6 clamps and seals the ends of the socket 102 and the spigot 101 to form a sealed space. The steam solenoid valve 11 is manually opened, and steam enters from the steam inlet 401 and is discharged from the steam outlet 402. The steam flows at a slightly positive pressure in the entire pipeline to generate heat. It can be heated to the process specified 55°C after 2 minutes of operation. After the heating is completed, the cylinder 301 controls the push plate 4 to retreat to the initial position, completing a cycle.

[0035] The above describes in detail the implementation methods of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the above implementation methods. The implementation methods can still be changed within the knowledge of ordinary technicians in this field. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A ductile iron pipe steam heating device, comprising a ductile iron pipe (1), wherein a supporting wheel (2) is provided below the ductile iron pipe (1), and characterized in that: The socket (101) side and the socket (102) side of the ductile iron pipe (1) are both provided with push plate mechanisms, and both groups of the push plate mechanisms include a power assembly (3) and a push plate (4). The power assembly (3) on the socket (101) side can control the corresponding push plate (4) to be pushed out to block the socket (101), and the power assembly (3) on the socket (102) side can control the corresponding push plate (4) to be pushed out to block the socket (102). A steam inlet (401) is provided on the push plate (4) on one side, and a steam outlet (402) is provided on the push plate (4) on the other side. The steam inlet (401) and the steam outlet (402) can be connected through the blocked ductile iron pipe (1).

2. The ductile iron pipe steam heating device according to claim 1, characterized in that: The power assembly (3) includes a cylinder (301), a mounting frame (302) is provided corresponding to the cylinder (301), the cylinder (301) is mounted on the top of the cylinder (301), and the push rod of the cylinder (301) is connected to the push plate (4) on the corresponding side.

3. The ductile iron pipe steam heating device according to claim 2, characterized in that: A bearing seat (303) is provided on the mounting frame (302), and the bearing seat (303) is slidably connected to a guide rod (304), and one end of the guide rod (304) is connected to the push plate (4) on the corresponding side.

4. The ductile iron pipe steam heating device according to claim 3, characterized in that: The push rod and guide rod (304) of the cylinder (301) are fixedly connected to the corresponding side push plate (4) through a flange assembly (5).

5. The ductile iron pipe steam heating device according to claim 4, characterized in that: The flange assembly (5) includes a rod end flange (501) and a matching flange (502), wherein the rod end flange (501) is fixedly arranged on the push rod and the guide rod (304) of the cylinder (301), and the matching flange (502) is fixedly arranged on the push plate (4).

6. The ductile iron pipe steam heating device according to claim 1, characterized in that: A rubber sealing layer (6) is provided on one side of the push plate (4) facing the ductile iron pipe (1).

7. The ductile iron pipe steam heating device according to claim 1, characterized in that: A plurality of reinforcing ribs (7) distributed in a circular array are constructed on the side of the push plate (4) facing away from the ductile iron pipe.

8. The ductile iron pipe steam heating device according to claim 1, characterized in that: The steam inlet (401) is connected to one end of a connecting pipe A (9) through a joint A (8), the other end of the connecting pipe A (9) is connected to one end of a steam pipe (10), the other end of the steam pipe (10) is connected to a waste heat boiler on the top of the annealing furnace, and a solenoid valve (11) and a ball valve A (12) are provided on the steam pipe (10).

9. The ductile iron pipe steam heating device according to claim 1, characterized in that: The steam outlet (402) is connected to one end of a connecting pipe B (14) via a joint B (13), and the other end of the connecting pipe B (14) is connected to a steam discharge pipe (15). A ball valve B (16) is provided on the steam discharge pipe (15).

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