CN110964879A

CN110964879A - Cooling section structure of heat treatment kiln

Info

Publication number: CN110964879A
Application number: CN201911398573.3A
Authority: CN
Inventors: 欧阳建; 黄映红; 刘慧�; 甘莉; 楚琪
Original assignee: Hunan Gold Furnace Science & Technology Co ltd
Current assignee: Hunan Gold Furnace Science & Technology Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-04-07

Abstract

The invention discloses a cooling section structure of a heat treatment kiln, which comprises a furnace body with a hearth, wherein a plurality of ventilation and heat dissipation pipes are arranged in the hearth, and each ventilation and heat dissipation pipe is connected with a cold air inlet assembly for leading cooling air to pass through the ventilation and heat dissipation pipe. The cooling section structure of the heat treatment kiln has the advantages of high cooling efficiency, simple structure, easiness in manufacturing and assembling, low cost, easiness in control and the like.

Description

Cooling section structure of heat treatment kiln

Technical Field

The invention relates to the technical field of heat treatment kiln equipment, in particular to a cooling section structure of a heat treatment kiln.

Background

Some powdered materials or other materials must be cooled after heat treatment to prevent reaction with air at high temperature or to prevent the high temperature materials from damaging equipment in subsequent processes. The cooling modes of the existing continuous heat treatment furnace mainly comprise natural cooling, air cooling jacket cooling, water cooling coil cooling and the like, and the cooling modes are different, and the cooling effects are different. In the actual operation process, the cooling effect can be enhanced by increasing the air quantity of the jacket, the cooling water quantity of the jacket, the air input and the like, but the energy consumption is increased, and the improvement of the cooling effect is also limited.

Some materials, particularly positive electrode materials of lithium batteries, are particularly sensitive to metal foreign matters, and if the materials are cooled by adopting a water-cooling jacket or a water-cooling coil, the materials can be well cooled, but the metal jacket or the water-cooling coil is easy to corrode and rust, and rusted metal easily pollutes products, so that the quality of the products is reduced; if the mode of increasing the air inflow is adopted, although the cooling effect can be enhanced, the flow of the discharged high-temperature gas is increased, the heat discharged by the waste gas is increased, and the energy consumption is increased; if only natural cooling is adopted, the material cannot be cooled to the temperature required by the process.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects in the prior art and provides a cooling section structure of a heat treatment kiln, which has the advantages of high cooling efficiency, simple structure, easy manufacture and assembly, low cost and easy control.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a cooling zone structure of thermal treatment kiln, is including the furnace body that has furnace, install many ventilation cooling tubes in the furnace, each ventilation cooling tube is connected with and is used for making the cooling gas let in the subassembly through the air conditioning of ventilation cooling tube.

As a further improvement of the above technical solution:

and each ventilation and heat dissipation pipe is arranged on the furnace wall on two sides of the hearth in a penetrating way and penetrates through the hearth, and the plurality of ventilation and heat dissipation pipes are sequentially arranged at intervals.

The cooling air in the two adjacent ventilating and radiating pipes passes through the opposite direction.

The air conditioning lets in the subassembly and includes air supply house steward and links to each other with air supply house steward and be used for sending into the air-blower of air supply house steward with cooling gas, the one end of each ventilation cooling tube with air supply house steward links to each other.

The air conditioning lets in the subassembly and includes induced air house steward and links to each other with the induced air house steward and be arranged in the draught fan that takes out the gas in the cooling tube that ventilates, the one end of each cooling tube that ventilates with the air supply house steward links to each other.

The furnace walls on two sides of the hearth are internally provided with a plurality of closed cavities.

The outside of furnace body is equipped with forced air cooling and presss from both sides the cover, forced air cooling presss from both sides the cover and has forced air cooling chamber, forced air cooling chamber is connected with cold wind intake pipe and outlet duct.

The bottom of furnace is equipped with a plurality of cold wind air inlets, cold wind air inlet links to each other with a cold wind supply assembly.

Install the conveyor who is used for carrying the material in the furnace, the ventilation cooling tube is located conveyor's top, and many ventilation cooling tubes along conveyor transported substance material direction interval arrangement in proper order, the cold wind air inlet is located conveyor's below.

The conveying device comprises a plurality of conveying roller rods arranged in the hearth and a driving mechanism for driving the plurality of conveying roller rods to rotate.

Compared with the prior art, the invention has the advantages that:

according to the cooling section structure of the heat treatment kiln, the plurality of the ventilating and radiating pipes are arranged in the hearth, and the cooling gas can exchange heat with the high-temperature gas in the hearth through the ventilating and radiating pipes by adopting the cold gas introducing assembly, so that the cooling purpose is realized.

Drawings

Fig. 1 is a main sectional structural schematic diagram of a cooling section structure of a heat treatment kiln.

Fig. 2 is a side sectional structural schematic view of a cooling section structure of the heat treatment kiln.

Fig. 3 is a schematic view illustrating the direction of the cooling air passing through the plurality of ventilating and radiating pipes.

Illustration of the drawings:

1. a furnace body; 11. a hearth; 12. a closed cavity; 2. a ventilating and radiating pipe; 3. a cold air inlet; 4. a conveying device; 41. conveying the roller rod; 5. an air-cooled jacket.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples.

As shown in fig. 1 and 2, the cooling zone structure of the heat treatment kiln of the present embodiment includes a furnace body 1 having a hearth 11, a plurality of ventilating and radiating pipes 2 are installed in the hearth 11, and a cool air introducing module for allowing cooling air to pass through the ventilating and radiating pipes 2 is connected to each ventilating and radiating pipe 2. This heat treatment kiln's cooling zone structure, install many ventilation cooling tube 2 in furnace 11, adopt air conditioning to let in the subassembly and make cooling gas pass through ventilation cooling tube 2, can carry out the heat transfer with the high-temperature gas in furnace 11, and then realize the cooling purpose, because ventilation cooling tube 2 is located furnace 11 and carries out the heat transfer with the high-temperature gas direct contact in furnace 11, its cooling efficiency improves greatly, ventilation cooling tube 2 and air conditioning let in the cooling system of subassembly combination simultaneously, and the steam generator has the advantages of simple structure, easily make the assembly, and is with low costs, easily control.

In this embodiment, each ventilation cooling tube 2 wears to establish on the oven of installation furnace 11 both sides and runs through furnace 11, and many ventilation cooling tubes 2 are arranged at interval in proper order, and many ventilation cooling tubes 2 different positions departments carry out the heat transfer cooling in furnace 11, can improve trade people efficiency and the interior temperature homogeneity of furnace 11.

In this embodiment, as shown in fig. 3, the directions of the cooling air passing through the two adjacent ventilating and radiating pipes 2 are opposite (the arrow direction in fig. 3 indicates the direction of the air passing through each ventilating and radiating pipe 2), and the temperature of the cooling air passing through the ventilating and radiating pipe 2 gradually increases, which results in the gradual decrease of the heat exchange speed along the direction of the cooling air passing through the ventilating and radiating pipe 2, so that the heat exchange capability of the ventilating and radiating pipe 2 from the wall of one side furnace to the wall of the other side furnace gradually decreases. The directions of cooling gas passing through two adjacent ventilating and radiating pipes 2 are opposite, so that the heat exchange speed and the heat exchange quantity in the width direction (the direction from the furnace wall at one side to the furnace wall at the other side) of the whole hearth 11 are basically consistent, and the integral temperature uniformity in the hearth 11 can be improved.

In this embodiment, the cool air introducing assembly includes a main air supply pipe and a blower connected to the main air supply pipe for supplying cool air to the main air supply pipe, and one end of each of the ventilating and radiating pipes 2 is connected to the main air supply pipe. The cooling gas is blown into the air supply main pipe by the blower and enters the ventilating and radiating pipes 2 through the air supply main pipe. The cold air inlet assembly has simple structure and low cost. In other embodiments, the subassembly is let in to air conditioning still can adopt other forms, for example, the subassembly is let in to air conditioning includes induced air house steward and links to each other with the induced air house steward and be used for the draught fan that takes out the gas in the cooling tube 2 that ventilates, and the one end of each cooling tube 2 that ventilates links to each other with the air supply house steward, makes air supply house steward and the interior negative pressure that forms of cooling tube 2 that ventilates when the draught fan starts, with the cold air in the environment.

In this embodiment, the furnace walls on both sides of the furnace 11 have a plurality of closed cavities 12 therein, which can improve the heat insulation performance of the furnace body 1.

In this embodiment, the outside of the furnace body 1 is provided with an air cooling jacket 5, the air cooling jacket 5 is provided with an air cooling cavity, and the air cooling cavity is connected with a cold air inlet pipe and an air outlet pipe. And cold air is fed into the air cooling cavity of the air cooling jacket 5 through the cold air inlet pipe to exchange heat with the outer surface of the furnace body 1, and the heat exchanged air is discharged from the air outlet pipe. The air cooling jacket 5 is arranged to dissipate heat from the outer surface of the furnace body 1, so that the heat dissipation capability is improved, and the indoor environment temperature can be improved.

In this embodiment, the bottom of the furnace 11 is provided with a plurality of cold air inlets 3, and the cold air inlets 3 are connected to a cold air supply assembly. The cold air supply assembly can introduce cold air into the hearth 11 through the cold air inlet 3, so that air and materials in the hearth 11 are cooled.

In this embodiment, install conveyor 4 that is used for carrying the material in furnace 11, ventilation cooling tube 2 is located conveyor 4's top, and many ventilation cooling tube 2 arrange along conveyor 4 material direction of carrying in proper order interval, and cold wind air inlet 3 is located conveyor 4's below. The cold air introduced from the cold air inlet 3 makes the gas in the hearth 11 flow from bottom to top, so that the heat exchange speed between the gas in the hearth 11 and the ventilating and radiating pipe 2 can be increased.

In this embodiment, the conveyor 4 includes a plurality of conveyor rollers 41 installed in the furnace 11 and a driving mechanism for driving the plurality of conveyor rollers 41 to rotate. The gap between the conveying roller rods 41 is convenient for the gas in the hearth 11 to flow, and the cold air introduced by the cold air inlet 3 can pass through the gap, so that the cooling effect is improved. The conveying roller rod 41 and the driving mechanism can be arranged by referring to the existing roller kiln.

This embodiment accessible adjustment ventilation cooling pipe 2 internal cooling gas's flow, the flow of the interior cold wind of air-cooled jacket 5 and the air input of cold wind air inlet 3 come the adjustment cooling rate, make the cooling material reach different effects. And meanwhile, the cooling means of the ventilating and radiating pipe 2, the air cooling jacket 5 and the cold air inlet 3 are adopted, so that the reasonable balance of the cooling effect and the energy consumption can be realized, and the purposes of saving energy and reducing consumption are achieved.

In this embodiment, in order to prevent the cooling material from directly or indirectly contacting with the metal foreign matter and prevent the material from being polluted by the metal foreign matter, the furnace wall around the furnace chamber 11 adopts a non-metal structure, and the non-metal structure may be one or more of materials such as alumina hollow spheres, mullite, silicon carbide and the like.

The cooling section structure of the heat treatment kiln can be suitable for heat treatment kilns such as a pushed slab kiln, a roller kiln, a tunnel kiln and the like.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-described embodiments. Modifications and variations that may occur to those skilled in the art without departing from the spirit and scope of the invention are to be considered as within the scope of the invention.

Claims

1. A cooling zone structure of a heat treatment kiln comprises a furnace body (1) with a hearth (11), and is characterized in that: a plurality of ventilating and radiating pipes (2) are installed in the hearth (11), and each ventilating and radiating pipe (2) is connected with a cold air inlet assembly used for enabling cooling gas to pass through the ventilating and radiating pipes (2).

2. The cooling segment structure of claim 1, wherein: each ventilation and heat radiation pipe (2) is arranged on the furnace wall at two sides of the hearth (11) in a penetrating way and penetrates through the hearth (11), and the plurality of ventilation and heat radiation pipes (2) are sequentially arranged at intervals.

3. The cooling segment structure of claim 2, wherein: the cooling air in the two adjacent ventilating and radiating pipes (2) passes through the opposite direction.

4. The cooling segment structure of claim 1, wherein: the air conditioning lets in the subassembly and includes air supply house steward and links to each other with air supply house steward and be used for sending into the air-blower of air supply house steward with cooling gas, the one end of each ventilation cooling tube (2) with air supply house steward links to each other.

5. The cooling segment structure of claim 1, wherein: the air conditioning lets in the subassembly and includes induced air house steward and links to each other with the induced air house steward and be arranged in the draught fan that takes out the gas in the cooling tube (2) that ventilates, the one end of each cooling tube (2) that ventilates with the air supply house steward links to each other.

6. The cooling segment structure of claim 1, wherein: the furnace walls on two sides of the hearth (11) are internally provided with a plurality of closed cavities (12).

7. The cooling segment structure of claim 1, wherein: the furnace body (1) is provided with an air cooling jacket (5) on the outside, the air cooling jacket (5) is provided with an air cooling cavity, and the air cooling cavity is connected with a cold air inlet pipe and an air outlet pipe.

8. The cooling section structure according to any one of claims 1 to 7, wherein: the bottom of furnace (11) is equipped with a plurality of cold wind air inlet (3), cold wind air inlet (3) link to each other with a cold wind feeding component.

9. The cooling segment structure of claim 8, wherein: install conveyor (4) that are used for carrying the material in furnace (11), ventilation cooling tube (2) are located the top of conveyor (4), and many ventilation cooling tube (2) along conveyor (4) transported substance direction interval arrangement in proper order, cold wind air inlet (3) are located the below of conveyor (4).

10. The cooling segment structure of claim 9, wherein: the conveying device (4) comprises a plurality of conveying roller rods (41) arranged in the hearth (11) and a driving mechanism for driving the plurality of conveying roller rods (41) to rotate.