阅读说明：本技术 一种辊道窑氧化段双烟道换热系统 (Roller kiln oxidation section double-flue heat exchange system ) 是由 丁国友 于 2021-04-29 设计创作，主要内容包括：本发明公开一种辊道窑氧化段双烟道换热系统,包括窑体,窑体的内部分隔形成氧化腔室和烟道室,窑体的两侧分别设有对应于氧化腔室的第一节能燃烧器和第二节能燃烧器,窑体的顶部设有立架,立架上安装有主风管,窑体底部设有分流管,主风管与分流管之间连通有支风管,分流管的两端分别设有第一管道接头和第二管道接头,第一管道接头上设有与第一节能燃烧器连通的第一换热管,第二管道接头上设有与第二节能燃烧器连通的第二换热管。在主风管通风后,风沿着支风管到达分流管,再分流进入到第一换热管和第二换热管内,实现与烟道室内的热量交换,高温气体输送至节能燃烧器与燃气混合,节能燃烧器只需消耗较少的能量即可点火,进而起到节能降耗的效果。(The invention discloses a roller kiln oxidation section double-flue heat exchange system which comprises a kiln body, wherein an oxidation chamber and a flue chamber are formed in the kiln body in a separated mode, a first energy-saving burner and a second energy-saving burner which correspond to the oxidation chamber are arranged on two sides of the kiln body respectively, a vertical frame is arranged at the top of the kiln body, a main air pipe is mounted on the vertical frame, a flow dividing pipe is arranged at the bottom of the kiln body, a branch air pipe is communicated between the main air pipe and the flow dividing pipe, a first pipeline joint and a second pipeline joint are arranged at two ends of the flow dividing pipe respectively, a first heat exchange pipe communicated with the first energy-saving burner is arranged on the first pipeline joint, and a second heat exchange pipe communicated with the second energy-saving burner is arranged on the second pipeline joint. After the main air pipe is ventilated, air reaches the shunt pipe along the branch air pipe, then is shunted and enters the first heat exchange pipe and the second heat exchange pipe, heat exchange with the flue chamber is achieved, high-temperature gas is conveyed to the energy-saving combustor to be mixed with fuel gas, the energy-saving combustor only needs to consume less energy to ignite, and then the effects of saving energy and reducing consumption are achieved.)

1. The utility model provides a roller kilns oxidation zone double flue heat transfer system, includes the kiln body, its characterized in that: the interior of the kiln body is divided into an oxidation chamber and a flue chamber; a first energy-saving burner and a second energy-saving burner corresponding to the oxidation chamber are respectively arranged on two sides of the kiln body; the top of the kiln body is provided with a vertical frame; a main air pipe is arranged on the vertical frame; the bottom of the kiln body is provided with a flow dividing pipe; a branch air pipe is communicated between the main air pipe and the flow dividing pipe; a first pipeline joint and a second pipeline joint are respectively arranged at two ends of the flow dividing pipe; the first pipeline joint is provided with a first heat exchange pipe communicated with the first energy-saving burner; a second heat exchange pipe communicated with a second energy-saving burner is arranged on the second pipeline joint; the first heat exchange tube and the second heat exchange tube penetrate through the flue chamber.

2. The roller kiln oxidation section double-flue heat exchange system as claimed in claim 1, wherein the first pipe joint and the first energy-saving burner are arranged on different sides of the kiln body; the first heat exchange tube penetrates through the flue chamber along the first side surface of the kiln body and then is connected with the first energy-saving burner through the second side surface.

3. The roller kiln oxidation section double-flue heat exchange system as claimed in claim 2, wherein a first adjusting valve is arranged at one end of the first heat exchange pipe close to the first energy-saving burner.

4. The roller kiln oxidation section double-flue heat exchange system as claimed in claim 1, wherein the second pipe joint and the second energy-saving burner are arranged on different sides of the kiln body; and the second heat exchange tube penetrates through the flue chamber along the second side surface of the kiln body and is connected with the second energy-saving burner through the first side surface.

5. The roller kiln oxidation section double-flue heat exchange system as claimed in claim 4, wherein a second adjusting valve is arranged at one end of the second heat exchange pipe close to the second energy-saving burner.

6. The roller kiln oxidation section double-flue heat exchange system as claimed in claim 1, wherein an actuator is provided at one end of the branch air duct close to the main air duct.

7. The roller kiln oxidation section double-flue heat exchange system according to claim 6, wherein the branch air pipe is further provided with an air valve; the air valve is arranged between the actuator and the shunt pipe.

8. The roller kiln oxidation section double-flue heat exchange system as claimed in claim 1, wherein conveying rollers are rotatably arranged in the kiln body; the transport roller is disposed through the oxidation chamber.

Technical Field

The invention relates to the technical field of kilns, in particular to a double-flue heat exchange system for an oxidation section of a roller kiln.

Background

In recent years, the architectural ceramic industry is in need of more and more strict national environmental protection requirements, tension in raw material supply, electricity charge, gas price rise, higher and higher product cost, further compression of enterprise profits and continuous decline of product market competitiveness under severe conditions, so that the improvement of energy conservation and consumption reduction is necessary for the development of enterprise survival and production cost reduction. In the production process of building ceramics, the firing of wall and floor tiles is realized by adopting a gas-fired roller kiln. The gas-fired roller kiln is one of main devices with large electric energy and fuel gas consumption of ceramic production enterprises, and how to enable the gas-fired roller kiln to ensure the firing quality of ceramic products, improve the production efficiency, increase the yield, save the fuel gas energy consumption, reduce the environmental temperature of a production workshop and improve the working environment of staff is an important subject of research and development innovation of the ceramic enterprises.

The existing gas-fired roller kiln can be roughly divided into the following parts from the kiln head to the kiln tail: the kiln body of each section is divided into an upper box body and a lower box body by a conveying roller way. In the medium-temperature oxidation section and the high-temperature sintering section, a spray gun is generally required to be arranged to heat the roller kiln box so as to achieve the purpose of quickly removing the moisture in the green bricks. The production of high-quality ceramic tile products requires that free water in the green tiles is removed as much as possible in a preheating section, and crystal water in the green tiles is removed in a medium-temperature oxidation section. The heat of the existing kiln is transferred from the high-temperature burning section to the kiln head of the smoke exhaust section and is exhausted, the part of heat cannot be used by the medium-temperature oxidation section, and free water in a brick blank is required to be completely removed in the preheating section.

Disclosure of Invention

Aiming at the defect that the existing oxidation section of the kiln can not meet the requirements of energy conservation and consumption reduction, the invention provides a double-flue heat exchange system for the oxidation section of a roller kiln, which is used for overcoming the defect.

A double-flue heat exchange system for an oxidation section of a roller kiln comprises a kiln body, wherein an oxidation chamber and a flue chamber are formed in the kiln body in a separated mode; a first energy-saving burner and a second energy-saving burner corresponding to the oxidation chamber are respectively arranged on two sides of the kiln body; the top of the kiln body is provided with a vertical frame; a main air pipe is arranged on the vertical frame; the bottom of the kiln body is provided with a flow dividing pipe; a branch air pipe is communicated between the main air pipe and the flow dividing pipe; a first pipeline joint and a second pipeline joint are respectively arranged at two ends of the flow dividing pipe; the first pipeline joint is provided with a first heat exchange pipe communicated with the first energy-saving burner; a second heat exchange pipe communicated with a second energy-saving burner is arranged on the second pipeline joint; the first heat exchange tube and the second heat exchange tube penetrate through the flue chamber.

Preferably, the first pipeline joint and the first energy-saving burner are arranged on different sides of the kiln body; the first heat exchange tube penetrates through the flue chamber along the first side surface of the kiln body and then is connected with the first energy-saving burner through the second side surface.

As a preferable scheme, one end of the first heat exchange pipe, which is close to the first energy-saving burner, is provided with a first regulating valve.

Preferably, the second pipeline joint and the second energy-saving burner are arranged on different sides of the kiln body; and the second heat exchange tube penetrates through the flue chamber along the second side surface of the kiln body and is connected with the second energy-saving burner through the first side surface.

Preferably, one end of the second heat exchange pipe, which is close to the second energy-saving burner, is provided with a second regulating valve.

Preferably, an actuator is arranged at one end of the branch air pipe close to the main air pipe.

As a preferred scheme, an air valve is further arranged on the branch air pipe; the air valve is arranged between the actuator and the shunt pipe.

As a preferred scheme, a conveying roller is rotationally arranged in the kiln body; the transport roller is disposed through the oxidation chamber.

Has the advantages that: the invention relates to a flue gas heating device, which comprises a flue chamber, a main air pipe, a branch air pipe, a first heat exchange pipe, a second heat exchange pipe, a branch air pipe, a second heat exchange pipe, a gas outlet pipe, a gas inlet pipe, a gas outlet pipe and a gas inlet pipe.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

In the figure: 1-a kiln body; 2-an oxidation chamber; 3-flue chamber; 4-a conveying roller; 5-a first energy saving burner; 6-a second energy-saving burner; 7-erecting a frame; 8-main air pipe; 9-a shunt tube; 10-a first pipe joint; 11-a second pipe joint; 12-a first heat exchange tube; 13-a first regulating valve; 14-a second heat exchange tube; 15-a second regulating valve; 16-an actuator; 17-a blast gate; 18-branch air pipe.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

In the present invention, it should be noted that the terms "upper (top)", "lower (bottom)", "inner", "outer", "between", "close to", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation and operation, and thus, should not be construed as limiting the present invention; the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in figure 1, the invention provides a double-flue heat exchange system for an oxidation section of a roller kiln, which comprises a kiln body 1, wherein an oxidation chamber 2 and a flue chamber 3 are formed in the kiln body 1 in a separated manner; a conveying roller 4 is rotationally arranged in the kiln body 1; the delivery roller 4 is arranged through the oxidation chamber 2; a first energy-saving burner 5 and a second energy-saving burner 6 corresponding to the oxidation chamber 2 are respectively arranged on two sides of the kiln body 1; the top of the kiln body 1 is provided with a vertical frame 7; a main air pipe 8 is arranged on the vertical frame 7; the bottom of the kiln body 1 is provided with a shunt pipe 9; a branch air pipe 18 is communicated between the main air pipe 8 and the branch air pipe 9; a first pipeline joint 10 and a second pipeline joint 11 are respectively arranged at two ends of the shunt pipe 9; a first heat exchange pipe 12 communicated with the first energy-saving burner 5 is arranged on the first pipeline joint 10; a second heat exchange pipe 14 communicated with the second energy-saving burner 6 is arranged on the second pipeline joint 11; the first heat exchange pipe 12 and the second heat exchange pipe 14 are both disposed through the flue box 3.

In some examples of the invention, the first pipe joint 10 is placed on a different side of the kiln body 1 than the first energy saving burner 5; the first heat exchange tube 12 passes through the flue chamber 3 along the first side surface of the kiln body 1 and then is connected with the first energy-saving burner 5 through the second side surface; a first adjusting valve 13 is arranged at one end of the first heat exchange pipe 12 close to the first energy-saving burner 5; by adopting the scheme, the contact area between the first heat exchange tube 12 and the flue chamber 3 can be maximized, the heat exchange efficiency is increased, the amount of the gas in the first heat exchange tube 12 flowing to the first energy-saving burner 5 can be controlled by the first adjusting valve 13, the wind speed in the first heat exchange tube 12 can be controlled, and the heat exchange effect is improved.

In some examples of the invention, the second pipe joint 11 is placed on a different side of the kiln body 1 than the second economizer burner 6; the second heat exchange tube 14 passes through the flue chamber 3 along the second side surface of the kiln body 1 and then is connected with the second energy-saving burner 6 through the first side surface; the second heat exchange tube 14 is close to one end of the second energy-saving burner 6 and is provided with the second regulating valve 15, by adopting the scheme, the contact area between the second heat exchange tube 14 and the flue chamber 3 can be maximized, the heat exchange efficiency is increased, the amount of the gas in the second heat exchange tube 14 flowing to the second energy-saving burner 6 can be controlled through the second regulating valve 15, the wind speed in the second heat exchange tube 14 can be controlled, and the heat exchange effect is improved.

In some examples of the present invention, the branch air duct 18 is provided with an actuator 16 near one end of the main air duct 8; the branch air pipe 18 is also provided with an air valve 17; the air valve 17 is arranged between the actuator 16 and the shunt pipe 9. By adopting the scheme, the actuator 16 receives the instruction and then controls the opening of the air valve 17, so that the control is accurate and the automation degree is high.

In the invention, because the temperature of the flue gas is higher when the flue chamber 3 discharges the flue gas, and the energy is wasted when the flue gas is directly discharged, the invention arranges the first heat exchange pipe 12 and the second heat exchange pipe 14 to pass through the flue chamber 3, after the ventilation is carried out in the main air pipe 8, the air reaches the shunt pipe 9 along the branch air pipe 18, and then flows into the first heat exchange pipe 12 and the second heat exchange pipe 14, so as to realize the energy exchange with the flue chamber 3, the temperature of the gas in the heat exchange pipes is increased, and then the high-temperature gas is conveyed to the energy-saving burner 5 to be mixed with the fuel gas, because the temperature of the mixed gas is increased, the energy-saving burner 5 can ignite only by consuming less energy, thereby achieving the effects of saving energy and reducing consumption.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.