Automatic control system for heating waste steel of nodular cast iron pipe

Abstract

The utility model belongs to the technical field of scrap steel drying, and mainly relates to a nodular cast iron pipe scrap steel heating automatic control system which comprises a controller, a conveyor and an isolation hood covering the conveyor, and a heating and drying area is arranged in the isolation hood. A moisture content detector is arranged on the conveyor, and a hot air assembly used for directly facing the scrap steel is arranged on the conveyor located in the isolation hood; the controller is electrically connected with the moisture content detector and adjusts the flow of hot air discharged by the hot air nozzle according to a moisture content signal fed back by the moisture content detector. The hot air assembly can spray out hot air, the hot air is used for heating and drying the scrap steel so that water on the scrap steel can be evaporated, in this way, dryness of the scrap steel is guaranteed, and when the scrap steel is put into the electric furnace, molten iron cannot be exploded out; and meanwhile, a moisture content signal is fed back to the controller through the moisture content detector, and the controller can automatically control the flow of hot air so as to ensure that the waste steel can be fully dried.

Description

Technical Field

[0001] The utility model belongs to the technical field of scrap steel drying, and mainly relates to an automatic control system for heating scrap steel of ductile iron pipes. Background Art

[0002] In the production of centrifugal ductile iron pipes, smelting molten iron conditioning is a very important process, but the safety of this process has always been a problem, because the scrap steel blocks pulled in from outside may contain a lot of moisture, especially in the summer rainy season. At this time, there are often incidents of scrap steel being added to the electric furnace and exploding, resulting in molten iron explosion, damage to the electric furnace and casualties. Utility Model Content

[0003] The utility model provides an automatic control system for heating scrap steel of ductile iron pipes, which solves the problem in the prior art that the scrap steel contains a large amount of moisture.

[0004] In order to solve the above problems, the present invention adopts the following technical solutions:

[0005] An automatic control system for heating scrap steel in ductile iron pipes, comprising a controller, a conveyor for transporting scrap steel, and an isolation cover covering the conveyor, wherein the isolation cover contains a heating and drying area for removing moisture from the scrap steel;

[0006] The conveyor is provided with a moisture content detector, which is used to detect the moisture content of the scrap steel that is about to enter the heating and drying area. The conveyor located in the isolation cover is provided with a hot air component for facing the scrap steel, which is used to deliver hot air to the heating and drying area to dry the scrap steel.

[0007] The controller is electrically connected to the moisture content detector, and the controller adjusts the flow rate of hot air discharged by the hot air nozzle according to the moisture content signal fed back by the moisture content detector.

[0008] It has the following beneficial effects: the hot air component can spray hot air, which is used to heat and dry the scrap steel to evaporate the moisture on the scrap steel, thus ensuring the dryness of the scrap steel. When the scrap steel is placed in the electric furnace, the molten iron will not explode; at the same time, the moisture content detector feeds back the moisture content signal to the controller, and the controller can automatically control the flow rate of the hot air to ensure that the scrap steel can be fully dried.

[0009] Furthermore, the hot air assembly includes a plurality of hot air nozzles, each of which is a flat nozzle structure, and the length direction of the hot air nozzle is perpendicular to the conveying direction of the conveyor.

[0010] The flat mouth structure has the following beneficial effects: the flat mouth structure can accelerate the flow rate of hot air, which can better achieve the drying of scrap steel.

[0011] Furthermore, the hot air component also includes a main pipe, and the multiple hot air nozzles are connected to the main pipe. The main pipe is arranged on the conveyor, and the main pipe is used to transport hot air to the heating and drying area.

[0012] The invention has the following beneficial effects: the main pipeline is connected to an external device that generates hot air, thereby better delivering hot air to the heating and drying area.

[0013] Furthermore, a mounting seat is provided on the conveyor, and the main pipeline is fixed on the mounting seat.

[0014] Furthermore, the isolation cover is provided with an exhaust pipe connected to the heating and drying area, and the exhaust pipe is used to discharge the dried moisture in the scrap steel.

[0015] The invention has the following beneficial effects: it prevents moisture from accumulating in the heating and drying area, and thus the dried moisture can be removed in time.

[0016] Furthermore, a bracket is mounted on the isolation cover, and the bracket supports the exhaust pipe.

[0017] The invention has the following beneficial effects: the bracket ensures the stability of the installation of the exhaust pipe.

[0018] Furthermore, the isolation cover has an inlet for the scrap steel to enter the heating and drying area and an outlet for the scrap steel to exit the heating and drying area, and both the inlet and the outlet are provided with isolation curtains for isolating hot air.

[0019] The invention has the following beneficial effects: the isolation curtain can isolate the hot air from being discharged from the inlet and outlet, thereby ensuring that the hot air can be more fully utilized. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the present invention with the bracket omitted;

[0023] Figure 3 This is a schematic diagram of the structure of the conveyor transporting scrap steel;

[0024] Figure 4 This is a schematic diagram of the structure of the hot air component installed on the conveyor;

[0025] Figure 5It is the structural diagram of the conveyor;

[0026] Figure 6 It is a structural diagram of the hot air component;

[0027] Figure 7 for Figure 5 Enlarged view of point A in the middle.

[0028] Description of reference numerals:

[0029] 1. Conveyor; 2. Hot air assembly; 3. Isolation cover; 4. Scrap steel; 5. Exhaust duct; 6. Bracket; 7. Connector; 8. Inlet; 9. Outlet; 10. Hot air nozzle; 11. Main duct; 12. Mounting base. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0031] The following describes various non-limiting embodiments of the present invention. The numbers of any elements in the accompanying drawings are for illustrative purposes only and are not intended to be limiting. Any nomenclature is provided for distinction only and does not have any limiting meaning. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with one another unless there is a conflict.

[0032] like Figure 1 、 Figure 2 As shown, an automatic heating control system for scrap steel in ductile iron pipes includes a controller, a conveyor 1 for transporting scrap steel 4, and an isolation cover 3 covering the conveyor 1. The isolation cover 3 contains a heating and drying area for removing moisture from the scrap steel 4. The conveyor 1 in this embodiment is a roller conveyor.

[0033] In other embodiments, the conveyor 1 is a mesh belt conveyor.

[0034] like Figure 2 、 Figure 3 As shown, the isolation enclosure 3 has an inlet 8 for the scrap steel 4 to enter the heating and drying area, and an outlet 9 for the scrap steel 4 to exit the heating and drying area. The conveyor 1 extends into the isolation enclosure 3 through the inlet 8 and exits the isolation enclosure 3 through the outlet 9. Isolation curtains are installed at both the inlet 8 and outlet 9 to isolate the hot air. The isolation curtains prevent the hot air from being discharged through the inlet 8 and outlet 9, ensuring that the hot air in the heating and drying area is more fully utilized.

[0035] like Figure 1 As shown, a connecting piece 7 is fixed on the conveyor 1 outside the isolation cover 3, and a moisture content detector is provided on the connecting piece 7. The moisture content detector is used to detect the moisture content of the scrap steel 4 that will enter the heating and drying area.

[0036] like Figure 1 、 Figure 2 、 Figure 4 、 Figure 6 、 Figure 7 As shown, a plurality of hot air components 2 for facing the scrap steel 4 are provided on the conveyor 1 located on the inner side of the isolation cover 3. The hot air component 2 includes a plurality of hot air nozzles 10 and a main pipe 11. Each hot air nozzle 10 is used to transport hot air to the heating and drying area to dry the scrap steel 4. The hot air nozzle 10 in this embodiment is a flat mouth structure, and the length direction of the hot air nozzle 10 for ejecting hot air is perpendicular to the conveying direction of the conveyor 1. The flat mouth structure can speed up the flow rate of the hot air, so that the scrap steel 4 can be dried better. The hot air nozzle 10 is located below the scrap steel 4, so that the hot air ejected by the hot air nozzle 10 flows from bottom to top. The main pipe 11 is used to transport hot air to the heating and drying area, and the main pipe 11 is provided on the conveyor 1. The main pipe 11 is connected to the equipment that can generate hot air in the outside world, so as to better transport hot air to the heating and drying area. Among them, as Figure 4 、 Figure 5 As shown, a mounting seat 12 is provided on the conveyor 1 , and the main pipeline 11 is fixed on the mounting seat 12 .

[0037] The hot air nozzle 10 can spray hot air, and the hot air is used to heat and dry the scrap steel 4 to evaporate the moisture on the scrap steel 4, thereby ensuring that the scrap steel 4 is dry. When the scrap steel 4 is placed in the electric furnace, the molten iron will not be exploded.

[0038] The controller is electrically connected to the moisture content detector. The controller adjusts the hot air flow rate discharged by the hot air nozzle 10 according to the moisture content signal fed back by the moisture content detector. By feeding back the moisture content signal to the controller through the moisture content detector, the controller can automatically control the hot air flow rate to ensure that the scrap steel 4 can be fully dried.

[0039] like Figure 1 、 Figure 2 As shown, the isolation cover 3 is equipped with an exhaust duct 5 that connects to the heating and drying area. This duct is used to remove moisture dried out of the scrap steel 4. In this embodiment, the exhaust duct 5 is located above the isolation cover 3. This prevents moisture from accumulating in the heating and drying area, allowing for the timely removal of dried moisture. Furthermore, a bracket 6 is mounted on the isolation cover 3 to support the exhaust duct 5. This bracket ensures the stability of the exhaust duct 5.

[0040] In this embodiment, after the scrap steel 4 comes out of the outlet 9, it will be grabbed by the robot and then directly put into the electric furnace.

Claims

1. An automatic control system for heating scrap steel of ductile iron pipe, characterized in that: It includes a controller, a conveyor for transporting scrap steel, and an isolation cover covering the conveyor, wherein the isolation cover is a heating and drying area for removing moisture from the scrap steel; The conveyor is provided with a moisture content detector, which is used to detect the moisture content of the scrap steel that is about to enter the heating and drying area. The conveyor located in the isolation cover is provided with a hot air component for facing the scrap steel, which is used to deliver hot air to the heating and drying area to dry the scrap steel. The controller is electrically connected to the moisture content detector, and the controller adjusts the flow rate of hot air discharged by the hot air nozzle according to the moisture content signal fed back by the moisture content detector.

2. The automatic control system for heating scrap steel of ductile iron pipe according to claim 1, characterized in that: The hot air component includes a plurality of hot air nozzles, each of which is a flat nozzle structure, and the length direction of the hot air nozzle is perpendicular to the conveying direction of the conveyor.

3. The automatic control system for heating scrap steel of ductile iron pipe according to claim 2, characterized in that: The hot air component further comprises a main pipe, the plurality of hot air nozzles are in communication with the main pipe, the main pipe is arranged on a conveyor, and the main pipe is used to transport hot air to the heating and drying area.

4. The automatic control system for heating scrap steel of ductile iron pipe according to claim 3, characterized in that: A mounting seat is provided on the conveyor, and the main pipeline is fixed on the mounting seat.

5. The automatic control system for heating scrap steel of ductile iron pipe according to claim 1, characterized in that: The isolation cover is provided with an exhaust pipe connected to the heating and drying area, and the exhaust pipe is used to discharge the dried moisture in the scrap steel.

6. The automatic control system for heating scrap steel of ductile iron pipe according to claim 5, characterized in that: A bracket is mounted on the isolation cover, and the bracket supports the exhaust pipe.

7. An automatic control system for heating scrap steel of ductile iron pipe according to any one of claims 1 to 6, characterized in that: The isolation cover has an inlet for the scrap steel to enter the heating and drying area and an outlet for the scrap steel to exit the heating and drying area. The inlet and outlet are both provided with isolation curtains for isolating hot air.

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