Fuel gas cover type energy-saving annealing furnace

Abstract

The utility model discloses a gas cover type energy-saving annealing furnace, which relates to the technical field of annealing furnaces, and comprises a furnace body, a furnace cover arranged on the upper part of the furnace body, a collecting box arranged on the lower part of the furnace body, a discharge pipe arranged on the upper part of the furnace body, an auxiliary pipe fixedly connected to the discharge pipe, and a gas outlet pipe fixedly connected to the auxiliary pipe, the auxiliary pipe is spirally wound on the outer side wall of the furnace body, a heat preservation cover is arranged on the outer side of the auxiliary pipe, the heat preservation cover is fixedly installed on the furnace body, an auxiliary valve is fixedly installed at the tail end of the auxiliary pipe, a secondary utilization valve is fixedly installed at the tail end of the discharge pipe, and a utilization box is fixedly connected to the tail end of the discharge pipe. Through the arrangement of the auxiliary pipe and the heat preservation cover, the temperature in tail gas can be increased in an auxiliary mode in the temperature increasing stage of the furnace body, and the temperature increasing speed is increased; and a secondary utilization pipe and a utilization box are arranged, so that heat in tail gas in the later period can be secondarily utilized, resources are fully utilized, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of annealing furnaces, in particular to a gas hood-type energy-saving annealing furnace. Background Art

[0002] The gas-fired annealing furnace mixes combustible gas and air and ignites the mixture through an igniter, heating the furnace core in the annealing furnace, thereby providing a suitable high-temperature environment for annealing the metal wire in the furnace core.

[0003] In the existing technology, when the gas-fired annealing furnace is working, exhaust gas is generated. However, initially, when the temperature in the furnace body has not risen to the required value, the exhaust gas will carry a part of the heat and dissipate into the air, thereby reducing the temperature rise rate. When the temperature rises to a certain level in the later stage, the temperature carried by the exhaust gas is higher, thereby losing a part of the heat, which is not conducive to the utilization of resources and is inconvenient to use. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, one of the purposes of the utility model is to provide a gas-fired hood-type energy-saving annealing furnace. By means of the auxiliary pipes and the heat-insulating hood, the temperature in the exhaust gas can be assisted to be heated up during the heating stage of the furnace body, thereby increasing the heating speed. The secondary utilization pipes and the utilization box can be used for secondary utilization of the heat in the exhaust gas in the later stage, thereby making full use of resources and being easy to use.

[0005] One of the objectives of the utility model is achieved by the following technical solution: a gas hood-type energy-saving annealing furnace, comprising a furnace body, a furnace hood is arranged on the upper part of the furnace body, a collecting box is arranged on the lower part of the furnace body, a discharge pipe is arranged on the upper part of the furnace body, an auxiliary pipe is fixedly connected to the discharge pipe, the auxiliary pipe is spirally wound on the outer side wall of the furnace body, a heat preservation cover is arranged on the outer side of the auxiliary pipe, the heat preservation cover is fixedly installed on the furnace body, an auxiliary valve is fixedly installed at the end of the auxiliary pipe, a secondary utilization valve is fixedly installed at the end of the discharge pipe, a utilization box is fixedly connected to the upper end of the utilization box, an air intake chamber and a utilization chamber are arranged inside the utilization box, a secondary utilization pipe is fixedly connected to the inside of the utilization chamber, one end of the secondary utilization pipe is communicated with the air intake chamber, the other end of the secondary utilization pipe passes through the utilization box, and an exhaust pipe is fixedly connected to the end, and a supporting leg is fixedly connected to the lower part of the utilization box. By setting up auxiliary pipes and heat preservation covers, the temperature of the exhaust gas can be assisted to rise during the furnace heating stage, thereby increasing the heating speed; the secondary utilization pipes and utilization boxes can make secondary utilization of the heat in the later exhaust gas, making full use of resources and being easy to use.

[0006] According to the gas hood-type energy-saving annealing furnace, a handle is fixedly connected to the collecting box.

[0007] According to the gas hood-type energy-saving annealing furnace, the number of the supporting legs is four and they are arranged axially symmetrically.

[0008] According to the gas hood type energy-saving annealing furnace, the secondary utilization tube is bent in a U shape.

[0009] According to the gas hood-type energy-saving annealing furnace, the liquid adding end is composed of a liquid adding pipe and a liquid adding cover, and the liquid adding cover is threadedly connected to the liquid adding pipe.

[0010] According to the gas hood-type energy-saving annealing furnace, the utilization chamber is located in front of the air inlet chamber.

[0011] According to the gas hood-type energy-saving annealing furnace, an exhaust port is provided on the side wall of the exhaust pipe.

[0012] According to the gas hood-type energy-saving annealing furnace, the inner diameter of the auxiliary pipe is smaller than the inner diameter of the exhaust pipe. Beneficial Effects

[0013] Compared with the prior art, the utility model can assist in raising the temperature of the exhaust gas during the furnace heating stage by means of the auxiliary pipe and the heat preservation cover; the secondary utilization pipe and the utilization box can reuse the heat in the exhaust gas in the later stage, making full use of resources and being easy to use.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0016] Figure 1 This is a schematic diagram of the structure of a gas hood-type energy-saving annealing furnace of the utility model;

[0017] Figure 2 It is a cross-sectional view of a utilization box of a gas hood-type energy-saving annealing furnace of the utility model;

[0018] Figure 3 This is a schematic structural diagram of the exhaust pipe part of a gas hood-type energy-saving annealing furnace of the utility model;

[0019] Figure 4 The utility model is a schematic structural diagram of the auxiliary pipe part of a gas hood type energy-saving annealing furnace.

[0020] Legend:

[0021] 1. Furnace body; 101. Collection box; 102. Furnace cover; 103. Handle; 201. Insulation cover; 202. Auxiliary pipe; 203. Auxiliary valve; 301. Liquid adding end; 302. Utilization box; 303. Exhaust pipe; 304. Support leg; 305. Secondary utilization pipe; 306. Secondary utilization valve; 307. Discharge pipe; 4. Utilization chamber; 401. Air inlet chamber. DETAILED DESCRIPTION

[0022] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0023] Reference Figure 1-4 The utility model embodiment is a gas hood type energy-saving annealing furnace, which includes a furnace body 1, a furnace hood 102 is arranged on the upper part of the furnace body 1, a collecting box 101 is arranged on the lower part of the furnace body 1, a handle 103 is fixedly connected to the collecting box 101, a discharge pipe 307 is arranged on the upper part of the furnace body 1, an auxiliary pipe 202 is fixedly connected to the discharge pipe 307, the inner diameter of the auxiliary pipe 202 is smaller than the inner diameter of the discharge pipe 307, the auxiliary pipe 202 is spirally wound on the outer side wall of the furnace body 1, a heat preservation cover 201 is arranged on the outer side of the auxiliary pipe 202, the heat preservation cover 201 is fixedly installed on the furnace body 1, an auxiliary valve 203 is fixedly installed at the end of the auxiliary pipe 202, a secondary utilization valve 306 is fixedly installed at the end of the discharge pipe 307, and a utilization valve 306 is fixedly connected to the end of the discharge pipe 307 The box 302 is used, and the upper end of the box 302 is fixedly connected with a liquid adding end 301, and the liquid adding end 301 is composed of a liquid adding tube and a liquid adding cover, and the liquid adding cover is threadedly connected to the liquid adding tube. The interior of the box 302 is provided with an air inlet chamber 401 and a utilization chamber 4, and the utilization chamber 4 is located in the front part of the air inlet chamber 401, and the interior of the utilization chamber 4 is fixedly connected with a secondary utilization tube 305, and the secondary utilization tube 305 is bent in a U shape, and one end of the secondary utilization tube 305 is connected with the air inlet chamber 401, and the other end of the secondary utilization tube 305 passes through the box 302, and the end is fixedly connected with an exhaust pipe 303, and the side wall of the exhaust pipe 303 is provided with an exhaust port, and the lower part of the box 302 is fixedly connected with a support leg 304, and the number of the support legs 304 is four, and they are axially symmetrical. By setting up the auxiliary pipe 202 and the heat preservation cover 201, the temperature of the exhaust gas can be assisted to rise during the heating stage of the furnace body 1, thereby increasing the heating speed; the secondary utilization pipe 305 and the utilization box 302 can make secondary utilization of the heat in the later exhaust gas, making full use of resources and being easy to use.

[0024] Working principle: When in use, the furnace body 1 is heated by gas to generate initial exhaust gas. The secondary utilization valve 306 is closed first, and the auxiliary valve 203 is opened. The initial exhaust gas enters the auxiliary pipe 202 through the exhaust pipe 307. The auxiliary pipe 202 absorbs the heat in the exhaust gas and transfers it to the furnace body 1, and is insulated under the action of the insulation cover 201, thereby improving the heating efficiency inside the furnace body 1. When the temperature reaches the target temperature, the auxiliary valve 203 is closed, and the secondary utilization valve 306 is opened. The high-temperature exhaust gas enters the air inlet cavity 401 of the utilization box 302 through the exhaust pipe 307, and then enters the secondary utilization pipe 305. The secondary utilization pipe 305 can absorb the heat and transfer it to the liquid to be heated in the utilization cavity 4, and then it is discharged from the exhaust pipe 303. The exhaust gas can be reused, resources are fully utilized, and it is easy to use.

[0025] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A gas-fired hood-type energy-saving annealing furnace, comprising a furnace body (1), a furnace hood (102) being arranged at the upper part of the furnace body (1), a collecting box (101) being arranged at the lower part of the furnace body (1), and a discharge pipe (307) being arranged at the upper part of the furnace body (1), characterized in that: The discharge pipe (307) is fixedly connected to an auxiliary pipe (202), the auxiliary pipe (202) is spirally wound on the outer wall of the furnace body (1), a heat-insulating cover (201) is arranged on the outer side of the auxiliary pipe (202), the heat-insulating cover (201) is fixedly installed on the furnace body (1), an auxiliary valve (203) is fixedly installed at the end of the auxiliary pipe (202), a secondary utilization valve (306) is fixedly installed at the end of the discharge pipe (307), and the end of the discharge pipe (307) is fixedly connected to the utilization box (302). The upper end of the utilization box (302) is fixedly connected to a liquid adding end (301), an air inlet chamber (401) and a utilization chamber (4) are arranged inside the utilization box (302), a secondary utilization pipe (305) is fixedly connected inside the utilization chamber (4), one end of the secondary utilization pipe (305) is in communication with the air inlet chamber (401), the other end of the secondary utilization pipe (305) passes through the utilization box (302), and an exhaust pipe (303) is fixedly connected to the end thereof, and a support leg (304) is fixedly connected to the lower part of the utilization box (302).

2. A gas-fired bell-type energy-saving annealing furnace according to claim 1, characterized in that: A handle (103) is fixedly connected to the collection box (101).

3. A gas-fired bell-type energy-saving annealing furnace according to claim 1, characterized in that: The supporting legs (304) are four in number and are arranged axially symmetrically.

4. A gas-fired bell-type energy-saving annealing furnace according to claim 1, characterized in that: The secondary utilization tube (305) is bent in a U shape.

5. A gas-fired bell-type energy-saving annealing furnace according to claim 1, characterized in that: The liquid adding end (301) consists of a liquid adding tube and a liquid adding cap, and the liquid adding cap is threadably connected to the liquid adding tube.

6. A gas-fired bell-type energy-saving annealing furnace according to claim 1, characterized in that: The utilization chamber (4) is located in front of the air inlet chamber (401).

7. A gas-fired bell-type energy-saving annealing furnace according to claim 1, characterized in that: An exhaust port is provided on the side wall of the exhaust cylinder (303).

8. A gas-fired bell-type energy-saving annealing furnace according to claim 1, characterized in that: The inner diameter of the auxiliary pipe (202) is smaller than the inner diameter of the discharge pipe (307).

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