CN201042697Y - Hot air exchange type oven device - Google Patents

Abstract

The utility model relates to the technical field of oven devices, in particular to a hot air exchange type oven device, which mainly comprises a hearth, an electrothermal tube, a circulating fan, a catalytic combustion chamber, an air return pipeline, a heat exchanger and a waste discharge fan, wherein the electrothermal tube, the circulating fan and the catalytic combustion chamber are arranged on the hearth; the catalytic combustion chamber consists of a preheating device before catalysis, an air mixer and a multi-time catalytic combustion system; the inlet of the catalytic combustion chamber is divided into a fresh air inlet area and a solvent evaporation waste gas inlet area, the fresh air inlet area and the solvent evaporation waste gas inlet area are arranged at the outlet end of the hearth, the outlet of the catalytic combustion chamber is connected with the heat exchanger and the waste discharge fan, the electric heating tube is arranged at the middle lower part of the hearth, a baffle plate is arranged between the upper part of the electric heating tube and a wire of a row, and an air adjusting door is arranged on a pipeline connecting the return air pipeline and the hearth.

Description

A hot air exchange type oven device

Technical field:

The utility model relates to the technical field of oven devices, in particular to a hot air exchange type oven device used for baking and curing paint on wires in the enameled wire industry.

Background technique:

At present, there are dozens of enamelling machine manufacturers in my country and hundreds of enamelled wire manufacturers, and most enamelling machines use old-fashioned designs. Due to the drawbacks in the structural design of this enamelling machine, it is easy to cause temperature imbalance inside the enamelling machine oven, which seriously affects the quality of the enameled wire, making it unable to meet the requirements of moisture crack resistance, self-lubrication, softness, etc. At the same time, because the hot air circulation system generally used in enamelling machines is to directly introduce exhaust gas into the furnace, it also has a negative impact on product quality, which not only makes the surface quality and performance of the product relatively poor, but also produces greater energy consumption. , is not conducive to environmental protection.

Utility model content:

The purpose of this utility model is to provide a hot air exchange type oven device by improving the existing technology in view of the above problems.

In order to achieve the above purpose, the utility model adopts the following technical scheme, a hot air exchange type oven device, which is mainly composed of a furnace, an electric heating pipe, a circulating fan, a catalytic combustion chamber, a return air duct, a heat exchanger, and a waste exhaust fan, The furnace is equipped with an electric heating tube, a circulating fan, a catalytic combustion chamber, and a heat exchanger and a waste exhaust fan are installed on the catalytic combustion chamber; the catalytic combustion chamber is composed of a pre-catalysis preheating device, an air mixer, and multiple catalytic combustion systems; The entrance of the combustion chamber is divided into a fresh air entry area and a solvent evaporation exhaust gas entry area, which is arranged at the outlet end of the furnace, and the outlet of the catalytic combustion chamber is connected with a heat exchanger and an exhaust fan. It is characterized in that: the electric heating tube is arranged at In the middle and lower part of the furnace, a baffle is set between the upper part of the electric heating tube and the running wire, and a damper is set on the pipeline connecting the return air duct and the furnace.

The beneficial effect of the utility model is that: the furnace is mainly composed of a furnace, an electric heating pipe, a circulation fan, a catalytic combustion chamber, a return air duct, a heat exchanger, and a waste exhaust fan; , the catalytic combustion chamber is equipped with a heat exchanger and exhaust fan; the catalytic combustion chamber is composed of a pre-catalytic preheating device, an air mixer, and multiple catalytic combustion systems; the entrance of the catalytic combustion chamber is divided into a fresh air entry area and a solvent evaporation waste gas The entrance area is set at the outlet end of the furnace, and the outlet of the catalytic combustion chamber is connected with the heat exchanger and the exhaust fan. The electric heating tube is arranged at the middle and lower part of the furnace, and a barrier Plate, and a damper is provided on the pipeline connecting the return air duct and the furnace. Such a device has the following advantages:

1. Optimize the electric heating tube for heating, move the electric heating tube to the middle and lower part of the furnace, install a baffle on it, and conduct radiation heating indirectly through the bottom plate to achieve uniform temperature distribution inside the furnace and ensure product quality.

2. The high-efficiency catalytic combustion system is adopted to ensure the effect of waste gas treatment, and the equipment meets high environmental protection requirements.

3. The catalytic combustion temperature can reach 700-800°C. With the high-efficiency heat exchanger, the energy consumption of the heating device is reduced, the energy-saving effect is obvious, and the production cost is effectively reduced; and because no exhaust gas is directly introduced into the furnace, the surface quality of the product is improved. ensure.

4. The device has reasonable structure, stable and reliable performance, wide adaptability and convenient operation.

Description of drawings:

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is the structural principle schematic diagram of the utility model.

Detailed ways:

See accompanying drawing 1, a kind of hot air exchange type oven device, it is mainly made up of hearth 2, electric heating pipe 3, circulation fan 7, catalytic combustion chamber 1, return air pipe 6, heat exchanger 11, exhaust fan 9, furnace hearth 2 is equipped with an electric heating tube 3, a circulating fan 7, a catalytic combustion chamber 1, and a heat exchanger 11 and a waste exhaust fan 9 are installed on the catalytic combustion chamber 1; , multiple catalytic combustion systems; the entrance of the catalytic combustion chamber 1 is divided into a fresh air entry area and a solvent evaporation waste gas entry area, which is arranged at the outlet end of the furnace 2, and the outlet of the catalytic combustion chamber 1 is connected with the heat exchanger 11 and the exhaust fan. 9 connected, the electric heating tube 3 is arranged in the middle and lower part of the furnace 2, a baffle 5 is arranged between the upper part of the electric heating tube 3 and the line wire, and a damper 10 is provided on the pipeline connecting the return air duct 6 and the furnace 2 .

In the actual production and use process, the wire enters the furnace 2 evaporation zone after being painted, and the gas formed after the enameled wire solvent evaporates enters the catalytic combustion preheating device 13 for preheating through the air duct, and the preheated gas enters the catalytic combustion zone through the air mixer. The combustion system performs catalytic combustion for many times, and the gas after catalytic combustion is heat-exchanged with fresh air and then discharged through exhaust fan 9. The fresh air is exchanged with the exhaust gas through the heat exchanger 11 and then introduced into the furnace 2 through the return air duct 6 . The damper 10 provided on the pipeline connecting the return air duct 6 with the furnace 2 can adjust the air intake and outlet volume according to the balance relationship between the furnace 2 and the catalytic system.

This device moves the electric heating tube 3 to the middle and lower part of the furnace 2, and sets a baffle 5 between the top of the electric heating tube 3 and the line wire, and heats the inside of the furnace 2 through the radiation of the baffle 5 to achieve the purpose of uniform internal temperature; The high-efficiency catalytic combustion system ensures the effect of waste gas treatment. The equipment meets high environmental protection requirements. The catalytic combustion temperature can reach 700-800°C. With the high-efficiency heat exchanger 11, the energy consumption of the heating device is reduced, and the energy-saving effect is obvious and effective. The production cost is reduced; and because no waste gas is directly introduced into the furnace 2, the surface quality of the product is guaranteed.

Of course, the above-described embodiments are only preferred examples of the present utility model, and are not intended to limit the scope of implementation of the present utility model, so all equivalents done according to the structure, features and principles described in the scope of patent application for the present utility model Changes or modifications should be included in the patent scope of the utility model.

Claims (2)

1. A hot air exchange type oven device, which is mainly composed of a furnace, an electric heating tube, a circulating fan, a catalytic combustion chamber, a return air duct, a heat exchanger, and a waste exhaust fan. The furnace is equipped with an electric heating tube, a circulating fan, and a catalytic The combustion chamber, the catalytic combustion chamber is equipped with a heat exchanger and exhaust fan; the catalytic combustion chamber is composed of a catalytic preheating device, an air mixer, and a multiple catalytic combustion system; the entrance of the catalytic combustion chamber is divided into a fresh air entry area and a solvent Evaporated exhaust gas enters the area, which is arranged at the outlet end of the furnace, and the outlet of the catalytic combustion chamber is connected with the heat exchanger and the exhaust fan. Baffles are arranged between the wires. 2. A hot air exchange type oven device according to claim 1, characterized in that: a damper is provided on the pipeline connecting the return air pipeline and the furnace.

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