CN117367138A - Energy-saving heating furnace - Google Patents

Abstract

The utility model provides an energy-saving heating furnace, which comprises a furnace body and a heating device, wherein a heating cavity is arranged in the furnace body, an insulating layer attached to the inner wall of the furnace body is arranged in the heating cavity, the insulating layer is of a circular ring structure, a plurality of pressurizing clapboards are arranged in the heating cavity, the heating cavity is separated into a plurality of layers by the pressurizing clapboards, the pressurizing clapboards are abutted to the insulating layer, fin grids inclined by 30-60 degrees are arranged on the pressurizing clapboards, the fin grids are arranged at one time in an equidistant mode along the inner wall of the pressurizing clapboards, and the pressurizing clapboards and the fin grids are integrally designed and are made of high-temperature resistant alloy materials. According to the utility model, the pressurizing partition plate with the fin grids is arranged in the heating cavity to separate the inside of the heating cavity, and when the temperature in the heating cavity rises, the high Wen Qiya between the layers fills the heating cavity through the fin grids, so that a high-temperature high-pressure layer is formed, the upper temperature limit in the furnace is further improved, and the efficiency is improved.

Description

An energy-saving heating furnace

Technical field

The present invention relates to the field of heating furnaces, and specifically to an energy-saving heating furnace.

Background technique

Heating furnace is a device (industrial furnace) that heats materials or workpieces (usually metal) to rolling to forging temperatures. Heating furnaces are used in petroleum, chemical industry, metallurgy, machinery, heat treatment, surface treatment, building materials, electronics, materials, light industry, daily chemicals, pharmaceuticals and many other industries. Heating furnaces include continuous heating furnaces and chamber heating furnaces. The heating furnace used for metal heat treatment is also called a heat treatment furnace. The furnace that heats the steel ingot or makes the internal temperature of the steel ingot uniform before rough rolling is called soaking furnace. Broadly speaking, heating furnaces also include soaking furnaces and heat treatment furnaces; some heating furnaces are devices that use various physical principles to increase the temperature of cold water into hot water within a certain period of time. According to different principles, it can be divided into electric heating furnace, gas heating furnace, solar heating furnace, magnetic energy heating furnace, air energy heating furnace, heating furnace, etc. The heating system is key to the safe, efficient performance of tankless electric furnaces.

In the metallurgical industry, heating furnaces traditionally refer to industrial furnaces that heat metal to rolling to forging temperatures, including continuous heating furnaces and chamber heating furnaces. The heating furnace used for metal heat treatment is also called a heat treatment furnace. The furnace that heats the steel ingot or makes the internal temperature of the steel ingot uniform before rough rolling is called soaking furnace. Broadly speaking, heating furnaces also include soaking furnaces and heat treatment furnaces.

For example, the Chinese invention with publication number CN205299908U discloses an energy-saving heating furnace, which includes a heating furnace shell. The upper end of the heating furnace shell is provided with a water inlet pipe, and the lower end side is provided with a water outlet pipe. The heating furnace shell There is a heating water chamber inside the body, and a heating chamber in the center. There are several gas burning tubes inside the heating chamber. The gas burning tubes have different lengths. The nozzles of the gas burning tubes have a conical structure, so The upper end of the heating furnace shell is connected to the exhaust pipe through a connecting sleeve, and an exhaust fan is provided on the exhaust pipe. This utility model sets up several gas burning tubes, so that under the action of the gas burning tubes, gas is sprayed out at high speed for heating. At the same time, the contact area between the heating chamber and the water effectively increases the heating speed. At the same time, the exhaust fan generates suction during the heating process. The smoke and dust during the combustion process are discharged in time. However, when the internal gas is extracted in this patent, part of the hot gas will be taken away and the pressure in the furnace will be reduced. When the temperature and pressure in the furnace are reduced, the heating effect will be reduced. deterioration, resulting in a waste of resources.

Contents of the invention

Based on this, in order to solve the problems of temperature reduction and pressure leakage in the furnace, the present invention provides an energy-saving heating furnace, whose specific technical solutions are as follows:

An energy-saving heating furnace includes a furnace body and a heating device. The furnace body is provided with a heating cavity for accommodating items to be heated. The heating cavity is provided with an insulation layer that fits the inner wall of the furnace. The insulation layer is in the shape of An annular structure, the heating chamber is provided with a plurality of pressurizing partitions, and the plurality of pressurizing partitions separate the heating chamber into several layers. The pressurizing partitions are in contact with the insulation layer. The pressure partition plate is provided with a fin grid with an inclination of 30°-60°. The fin grids are arranged equidistantly along the inner wall of the pressurization partition plate. The pressure increase partition plate and the fin grid It is an integrated design and is made of high-temperature-resistant alloy materials. The heating chamber is equipped with a heating container that is connected to the pressurized partition plate. The heating device is sealingly connected to the furnace body through a sealing flange. The device heats and exhausts the heating chamber.

In the above-mentioned energy-saving heating furnace, a pressurized partition with a fin grid is provided in the heating chamber of the furnace body to separate several layers inside. When the temperature in the heating chamber rises, the high-temperature air pressure between the layers The heating cavity will be flooded through the fin grid, thereby forming a high-temperature and high-pressure layer between the pressurized partitions, thereby increasing the upper temperature limit in the furnace and improving efficiency. Moreover, when the heating device stops working, the high-temperature and high-pressure layer needs to be dissipated. Through the fin grid on the pressurized partition, the dispersion speed is slowed down. After the ceasefire, the waste heat in the heating chamber can be stored for a long time for next use, thereby further saving energy consumption.

Furthermore, the inner ring structure of the pressurizing partition plate is adapted to the outer wall structure of the heating vessel. The pressurizing partition boards are equidistantly distributed up and down along the outer wall of the heating vessel, and are provided with at least two layers.

Further, the insulation layer is provided with a concave slot, the end surface structure of the concave slot is a circular structure, and the outer wall of the pressurizing partition is connected with positioning fins, and the positioning fins are connected to the The recessed slots mate with each other.

Furthermore, the material of the insulation layer is a high-temperature resistant asbestos board. There are positioning rods that pass through the positioning fins in the concave slot. The height of the positioning rod is equal to the height of the insulation layer. Consistently, the positioning rod is made of high-temperature resistant ceramic material.

Furthermore, the positioning rod is hollow and has an air outlet on one side thereof. The positioning rod is provided with a number of ignition devices for igniting excess air corresponding to the air outlet. The opening of the air outlet faces the heating cavity. center direction.

Further, the positioning rod is provided with a sliding ring, the ignition device is installed on the positioning rod through the sliding ring, and the ignition device is located between the two pressurizing partitions.

Further, the sliding ring is slidably disposed on the rod body of the positioning rod, the diameter of the sliding ring is the same as the diameter of the positioning fin, and the structure of the sliding ring is suitable for the structure of the recessed slot. match.

Furthermore, the furnace body is also provided with a furnace cover for closing the heating cavity. A sealing gasket is provided in the furnace cover, and the bottom of the sealing gasket is in close contact with the top of the insulation layer.

Description of the drawings

The present invention can be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon the principles of the illustrated embodiments. In the different views, the same reference numbers designate corresponding parts.

Figure 1 is a schematic cross-sectional structural diagram of an energy-saving heating furnace according to an embodiment of the present invention;

Figure 2 is a three-dimensional structural schematic diagram of a pressurized partition in an energy-saving heating furnace according to an embodiment of the present invention;

Figure 3 is a schematic top view of the furnace body of an energy-saving heating furnace according to an embodiment of the present invention;

Figure 4 is a schematic three-dimensional structural diagram of the insulation layer in an energy-saving heating furnace according to an embodiment of the present invention;

Figure 5 is a schematic cross-sectional structural view of the recessed slot in an energy-saving heating furnace according to an embodiment of the present invention;

Figure 6 is a schematic cross-sectional structural diagram of a positioning rod in an energy-saving heating furnace according to an embodiment of the present invention;

Figure 7 is a schematic three-dimensional structural diagram of a sliding ring in an energy-saving heating furnace according to an embodiment of the present invention.

Explanation of reference signs: 1. Furnace body; 10. Heating chamber; 11. Furnace cover; 12. Insulation layer; 110. Sealing gasket; 120. Recessed slot; 121. Positioning rod; 122. Air jet; 2. Heating device; 3. Pressurized partition; 30. Fin grid; 300. Positioning fins; 4. Heating container; 5. Ignition device; 50. Sliding ring.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with its embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and do not limit the scope of the present invention.

It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or intervening elements may also be present. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may also be intervening elements present. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation manner.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the invention belongs. The terminology used herein in the description of the invention is for the purpose of describing specific embodiments only and is not intended to limit the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The "first" and "second" mentioned in the present invention do not represent the specific number or order, but are only used for the distinction of names.

As shown in Figure 1, an energy-saving heating furnace in one embodiment of the present invention includes a furnace body 1 and a furnace cover 11. The furnace body 1 is provided with a heating cavity 10 for accommodating items to be heated. The heating cavity 10 is provided with a The insulation layer 12 is provided with a furnace cover 11. The furnace cover 11 is arranged on the furnace body 1 and can close the heating chamber 10. The furnace cover 11 is provided with a sealing gasket 110. The bottom of the sealing gasket 110 is in contact with the insulation layer. The top of 12 is tightly fitted, and the furnace cover 11 can be set to a rotary opening and closing type through a latch, or can be set to a rotary opening and closing type through a threaded structure, so that when the furnace cover 11 is closed, the heating cavity 10 in the furnace body 1 is relatively sealed When heating, the hot gas is affected by the air pressure and accumulates inside the heating chamber 10. When the inside of the heating chamber 10 is in a state of good confidentiality, it can help to increase the temperature and pressure inside the heating chamber 10, thereby improving the heating effect. , and avoid heat loss from the closure of the furnace cover 11 and the furnace body 1 to improve heating efficiency.

As shown in Figures 1-3, in one embodiment, the heating device 2 is sealingly connected to the furnace body 1 through a sealing flange 20. The heating device 2 heats the heating chamber 10 and discharges gas. When the air pressure in the furnace body 1 When it is too high, the heating device 2 stops heating and adjusts the exhaust of the high pressure in the heating chamber 10, thereby preventing the pressure in the heating chamber 10 from being too high and causing a safety accident; several pressurization partitions 3 are provided in the heating chamber 10. , several boosting partitions 3 separate the heating chamber 10 into several layers, thereby forming a layer-by-layer separation area in the heating chamber 10. The boosting partitions 3 are in contact with the insulation layer 12, and when the heating device 2 faces the furnace When the heating cavity 10 on the body 1 is heated, heat will be accumulated in the heating cavity 10, thereby forming a high-temperature and high-pressure layer between the pressurized partitions 3, thereby increasing the upper temperature limit in the heating cavity 10 and increasing the pressure. Heating efficiency; the supercharging partition 3 is provided with fin grids 30 with an inclination of 30°-60°. The fin grids 30 are arranged equidistantly along the inner wall of the supercharging partition 3. The supercharging partition 3 It is designed to be integrated with the fin grid 30 and is made of high-temperature resistant alloy material. The separated spaces of each layer in the heating chamber 10 are connected through the gaps between the fin grids 30, so that the high-temperature and high-pressure gas can be heated The interior of the cavity 10 circulates, so that the internal temperature rises or cools in a stepwise manner, and then the waste heat in the heating cavity 10 can be slowly released after the ceasefire, thereby increasing the retention time of the waste heat. When used next time, it will have a certain initial temperature and improve Heating efficiency further saves energy consumption.

As shown in Figures 2 and 4-7, in one embodiment, the furnace body 1 is provided with a heating cavity 10 for accommodating items to be heated. The heating cavity 10 has a built-in insulation layer 12. The material of the insulation layer 12 is It is made of high-temperature resistant asbestos board, so that the insulation layer 12 has a strong insulation effect on the inside of the furnace body 1, and reduces the space inside the furnace body 1, thus saving the time required to heat the heating cavity 10 from the initial temperature to a high temperature and high pressure state. time and energy consumption; the insulation layer 12 is provided with a concave slot 120, and the outer wall of the pressurizing partition 3 is connected with positioning fins 300. The pressurizing partition 3 is inserted into the concave slot 120 through the positioning fins 300, and the insulation layer 12 is provided with a concave slot 120, and a positioning rod 121 is provided in the concave slot 120. The positioning rod 121 is made of a high-temperature resistant material, and the positioning fins 300 on the supercharging partition 3 are pinned through the positioning rod 121. Positioning rod 121 The positioning fins 300 are penetrated in sequence, and a sliding ring 50 is provided between the upper and lower positioning fins 300. The sliding ring 50 matches the structure of the inner concave slot 120, and is installed between the two pressurizing partitions 3 by adjusting The number of sliding rings 50 can adjust the spacing between the pressurized partitions 3 so as to adjust the number of high-temperature and high-pressure layers according to the required heating temperature of the heating object to adapt to different heating needs; the sliding rings 50 There is an ignition device 5 for igniting excess air. The positioning rod 121 is hollow and has an air jet 122 corresponding to the ignition device 5. The opening of the air jet 122 faces the center direction of the heating chamber 10. The sliding ring 50 separates the two pressurizations. plates 3 are separated, and at the same time, the ignition device 5 is fixed by the positioning rod 121, so that there is an ignition device 5 between each layer of pressurized partitions 3. After the heating furnace works for a period of time, it will inevitably A certain amount of incompletely burned residual gas remains in each space separated by the plate 3. The residual gas will flow in the heating chamber 10 under the influence of the heating device 2, and circulate around the heating chamber 10, located on the pressurized partition 3. The ignition device 5 on the surrounding positioning rods 121 can ignite and re-combust the residual gas, so that it can be burned fully, thereby further saving energy consumption.

The working principle of the present invention: first, place the items that need to be heated in the heating container 4, and after closing the furnace body 1 through the furnace cover 11, the heating device 2 heats the heating cavity 10 in the furnace body 1, thereby heating the heating container. The items in 4 are thermally processed. When the heating container 4 is heated, the pressurized partition 3 installed in the furnace body 1 separates several layers inside the heating chamber 10. When the temperature in the heating chamber 10 rises, the high-temperature gas passes through The gaps between the fin grids 30 on the pressurizing partition 3 slowly circulate, so that the high-temperature air pressure fills the heating chamber 10 through the fin grids 30 and forms high-temperature and high-pressure gas in each layer area separated by the pressurizing partition 3 layer, thereby increasing the high-temperature pressure in the heating cavity 10, increasing the temperature in the furnace, and improving the heating efficiency;

Then, after the heating furnace has been working for a period of time, a certain amount of incompletely burned residual gas will inevitably remain in each layer of space separated by the pressurized partitions 3, and there is a gap between each layer of pressurized partitions 3. The ignition device 5 ignites once every once in a while to ignite and re-combust the residual gas between the pressurized partitions 3, so that it can be fully burned and further save energy consumption;

Finally, when the air pressure in the furnace body 1 is too high, the heating device 2 stops heating and adjusts the exhaust of the high pressure in the heating chamber 10 to avoid safety accidents. After the ceasefire, the residual heat in the heating chamber 10 needs to be pressurized. The partition 3 rises or falls in the heating chamber 10, thereby slowly releasing it, thereby increasing the retention time of the waste heat. Compared with the existing heating furnace, the waste heat preservation effect is better, thereby delaying the next ignition and retaining a certain initial value. temperature duration, thereby improving heating efficiency during the heating stage and further saving energy consumption.

In the present invention, several pressurizing partitions 3 with fin grids 30 separate several layers inside the furnace body 1. When the temperature in the heating chamber 10 rises, the high-temperature air pressure between the pressurizing partitions 3 will pass through. The fin grid 30 fills the heating cavity and forms a high-temperature and high-pressure layer between the pressurizing partitions 3, thereby increasing the upper temperature limit and improving efficiency; the pressurizing partitions 3 are directly connected through the gaps of the fin grids 30, and when they are When the temperature of the heating chamber 10 changes, the temperature between the layers should rise or fall in a stepwise manner, so that the residual heat in the heating chamber 10 can be preserved for a long time after the ceasefire, so that it can be used next time and save energy consumption; pressurization There is an ignition device 5 between the partitions 3. When the heating furnace works for a period of time, a certain amount of incompletely burned items will remain between the pressurized partitions 3. At this time, the ignition device 5 will The residual combustion material between 3 is burned, thereby achieving the combustion-supporting effect.

The technical features of the above-described embodiments can be combined in any way. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, All should be considered to be within the scope of this manual.

The above-mentioned embodiments only express several implementation modes of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention. It should be noted that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the patent of the present invention should be determined by the appended claims.

Claims (8)

1. The utility model provides an energy-conserving heating furnace, its characterized in that, includes furnace body and heating device, be equipped with the heating chamber that is used for holding the heated material in the furnace body, be equipped with the heat preservation that laminates with the furnace body inner wall in the heating chamber, the heat preservation is ring column structure, be provided with a plurality of pressure boost baffle in the heating chamber, a plurality of the pressure boost baffle separates out a plurality of layers with the heating chamber, pressure boost baffle and heat preservation butt, the last fin grid that is 30 ~ 60 slope of having seted up of pressure boost baffle, the fin grid is equidistant form once arranged along the inner wall of pressure boost baffle, pressure boost baffle and fin grid design as an organic whole and its material are high temperature resistant alloy material, be equipped with the heating container with pressure boost baffle joint in the heating chamber, heating device passes through sealing flange and furnace body sealing connection, heating device heats and exhausts the heating chamber.

2. The energy-saving heating furnace according to claim 1, wherein the inner ring structure of the pressurizing partition plate is matched with the outer wall structure of the heating container, and the pressurizing partition plate is distributed at equal intervals up and down along the outer wall of the heating container and is provided with at least two layers.

3. The energy-saving heating furnace according to claim 1, wherein the heat-insulating layer is made of high-temperature-resistant asbestos board, the heat-insulating layer is provided with a concave slot, the end face structure of the concave slot is of a circular structure, the outer wall of the pressurizing partition plate is connected with positioning fins, and the positioning fins are mutually matched with the concave slot.

4. The energy-saving heating furnace according to claim 3, wherein positioning rods penetrating through the positioning fins in sequence are arranged in the concave slots, the heights of the positioning rods are consistent with the heights of the heat preservation layers, and the positioning rods are made of high-temperature-resistant ceramic materials.

5. The energy-saving heating furnace according to claim 4, wherein the positioning rod is hollow, a gas nozzle is formed in one side of the positioning rod, a plurality of ignition devices for igniting redundant air are arranged at the positions of the positioning rod corresponding to the gas nozzle, and the opening of the gas nozzle faces the center direction of the heating cavity.

6. The energy-saving heating furnace according to claim 5, wherein the positioning rod is provided with a sliding ring, the ignition device is arranged on the positioning rod through the sliding ring, and the ignition device is positioned between the two pressurizing clapboards.

7. The energy-saving heating furnace according to claim 6, wherein the sliding ring is slidably arranged on a rod body of the positioning rod, the diameter of the sliding ring is the same as that of the positioning fin, and the structure of the sliding ring is matched with that of the concave slot.

8. The energy-saving heating furnace according to claim 1, wherein a furnace cover for closing the heating cavity is further arranged on the furnace body, a sealing base plate is arranged in the furnace cover, and the bottom of the sealing base plate is tightly attached to the top of the heat preservation layer.