Temperature-controlled delivery tube chute

Abstract

The utility model provides a kind of temperature control conveying pipe chute, it is mainly related to molten metal conveying technical field.A kind of temperature control conveying pipe chute, including pipe chute, the setting protection shell of pipe chute outer ring, the fixed setting outlet of outer ring, the inside of the outlet is provided with thermocouple, pipe chute outer ring is wrapped with heater, the heater is electrically connected with thermocouple.The utility model has the beneficial effect that the device is different from existing open chute, molten metal is not contacted with outside during conveying, avoid the inhalation slag caused by environmental factors;Molten metal is in the inside of pipe chute during conveying process, temperature control assembly outside pipe chute can be according to rear end feedback, real-time temperature control is carried out to aluminium liquid.

Description

Technical Field

[0001] This utility model mainly relates to the field of molten metal conveying technology, specifically a temperature-controlled conveying pipe chute. Background Technology

[0002] Existing chutes in the metallurgical and foundry industries are open chutes, typically lined with sintered castable refractory material, insulated externally, and supported by a metal shell. After installation, during use, an oxide film forms on the surface of the molten metal upon contact with air. If this oxide film cracks, it will draw in a large amount of air and produce slag. Even if the oxide film remains intact, humidity and other factors in the air can significantly impact the quality of the molten aluminum. Furthermore, when the chute is long, the temperature of the molten aluminum will continuously decrease. Even adding an insulation cover to the top of the chute can only mitigate the temperature drop, not prevent it entirely. Utility Model Content

[0003] To achieve the above objectives, this utility model employs the following technical solution: A temperature-controlled conveying pipe chute includes a pipe chute, a protective shell on the outer ring of the pipe chute, an outlet fixedly provided on the outer ring, a thermocouple disposed inside the outlet, and a heater wrapped around the outer ring of the pipe chute, the heater being electrically connected to the thermocouple.

[0004] A heat insulation layer is provided between the outer ring of the chute and the inner wall of the protective shell, and the heat insulation layer is sleeved on the outer ring of the heater.

[0005] The pipe chute is provided with connecting flanges at both ends, and the outer ring of the pipe chute is coated with an oxide coating.

[0006] Compared with the existing technology, the beneficial effects of this utility model are: This utility model has a simple structure and is easy to install and use. This device is different from the existing open chute. The molten metal does not come into contact with the outside world during transportation, avoiding air intake and slag formation caused by environmental factors. During the transportation of the molten metal, it is inside the pipe chute. The temperature control component outside the pipe chute can control the temperature of the molten aluminum in real time based on feedback from the back end. The double-layer protective structure of the protective shell and the insulation layer not only achieves the function of heat preservation, but also effectively isolates the high temperature of the chute. The fully enclosed structure eliminates the problem of splashing caused by vibration and flow rate fluctuation of molten metal in traditional chutes. Attached Figure Description

[0007] Appendix Figure 1 This is a cross-sectional structural schematic diagram of the present invention; Appendix Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0008] The labels shown in the attached diagram are: 1. Tube chute; 2. Protective shell; 3. Outlet; 4. Thermocouple; 5. Heater; 6. Insulation layer. Detailed Implementation

[0009] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0010] Referring to the accompanying drawings, a temperature-controlled conveying pipe chute includes a pipe chute 1, with a protective shell 2 around the outer ring of the pipe chute 1. The pipe chute 1 is made of heat-resistant cast steel and then machined. An outlet 3 is fixedly provided on the outer ring, and a thermocouple 4 is installed inside the outlet 3. A heater 5 is wrapped around the outer ring of the pipe chute 1, and the heater 5 is electrically connected to the thermocouple 4. During operation, the heating temperature of the heater 5 is controlled in real time by measuring the temperature through the thermocouple 5.

[0011] A heat insulation layer 6 is provided between the outer ring of the chute 1 and the inner wall of the protective shell 2. The heat insulation layer 6 is sleeved on the outer ring of the heater 5. The heater 5 can adopt different heating methods such as resistance wire, stainless steel heating tube or tracked ceramic heating plate.

[0012] The pipe chute 1 is provided with connecting flanges at both ends, and the outer ring of the pipe chute 1 is coated with an oxide coating.

[0013] When using this device, if multiple sections of the chute 1 need to be spliced, they are connected by the connecting flanges at both ends of the chute 1. High-temperature resistant sealing gaskets are installed on the flange contact surfaces, and bolts are tightened evenly to ensure a seamless connection and prevent molten metal leakage and air ingress. The heater 5 is evenly wrapped around the outer ring of the chute 1 to ensure that the heater is completely in contact with the pipe body and to avoid heating dead zones. The insulation layer 6 is placed around the outer ring of the heater 5 to ensure that the insulation layer fully covers the heater and the exposed area of ​​the chute. Then, the protective shell 2 is installed so that the inner wall of the protective shell is tightly in contact with the insulation layer 6. The thermocouple 4 is embedded and installed through the outlet 3 so that the thermocouple probe is close to the outer ring of the chute 1 and the electrical connection between the thermocouple 4 and the heater 5 is completed, and the temperature control circuit is built (an external temperature control instrument can be connected to realize temperature data display and heating start / stop control).

[0014] 30-60 minutes before conveying the molten metal, the heater 5 is started, and the temperature of the chute 1 is monitored in real time by the thermocouple 4. This raises the temperature of the inner wall of the chute 1 to near the initial temperature of the molten metal, preventing a sudden drop in temperature or damage to the pipe body due to excessive temperature difference after the molten metal enters the cold chute 1. The molten metal conveying system of the metallurgical and casting production line is started, so that the molten metal is conveyed along the internal channel of the chute 1. The insulation layer 6 blocks the heat exchange between the chute 1 and the outside world. With the real-time heat replenishment of the heater 5, the temperature of the molten metal is kept stable within the target range during long-distance conveying, avoiding a decrease in the fluidity of the molten metal due to temperature drop.

[0015] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A temperature-controlled conveying pipe chute, comprising a pipe chute (1), characterized in that: The outer ring of the chute (1) is provided with a protective shell (2), and the outer ring is fixedly provided with an outlet (3). A thermocouple (4) is provided inside the outlet (3). The outer ring of the chute (1) is wrapped with a heater (5), and the heater (5) is electrically connected to the thermocouple (4).

2. The temperature-controlled conveying pipe chute according to claim 1, characterized in that: A heat insulation layer (6) is provided between the outer ring of the chute (1) and the inner wall of the protective shell (2), and the heat insulation layer (6) is sleeved on the outer ring of the heater (5).

3. The temperature-controlled conveying pipe chute according to claim 2, characterized in that: The pipe chute (1) is provided with connecting flanges at both ends, and the outer ring of the pipe chute (1) is coated with an oxide coating.

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