Combustion-supporting air energy-saving device and kiln

Abstract

The utility model discloses a kind of combustion-supporting air energy-saving devices and a kiln, combustion-supporting air energy-saving device includes: heat exchange pipe, burner and combustion-supporting pipe, the heat exchange pipe is equipped with multiple and along first direction interval arrangement, the heat exchange pipe extends along second direction and is arranged in the bottom end of kiln, the first direction is the long end direction of kiln, the second direction is the short end direction of kiln;The burner is equipped with multiple and with multiple heat exchange pipe one-to-one correspondence, the burner is communicated with the one end of heat exchange pipe;The combustion-supporting pipe shunt communication all the one end of heat exchange pipe away from burner.The kiln includes the combustion-supporting air energy-saving device of the described.The utility model can solve the problem that existing kiln combustion-supporting air temperature is lower.

Description

Technical Field

[0001] This utility model belongs to the field of energy-saving kiln technology, and specifically relates to a combustion air energy-saving device and a kiln. Background Technology

[0002] Currently, in the design of advanced roller kilns, the temperature of the combustion air from the outside air is relatively low. The temperature is generally increased by heat exchangers or other structures. However, the temperature of the combustion air after heating is not high. The temperature of the combustion air flowing to the burner is generally not higher than 150 degrees Celsius. This results in the burner needing to consume more energy to increase the temperature of the combustion air to reach the combustion temperature. Utility Model Content

[0003] The purpose of this utility model is to provide a combustion air energy-saving device and a kiln to solve the technical problem of low combustion air temperature in the prior art.

[0004] The technical solution adopted to solve the above-mentioned technical problems is as follows:

[0005] This utility model discloses a combustion-supporting wind energy-saving device, comprising:

[0006] The heat exchange tubes are provided in multiple sections and spaced apart along a first direction. The heat exchange tubes extend along a second direction and pass through the bottom of the kiln. The first direction is the direction of the long end of the kiln, and the second direction is the direction of the short end of the kiln.

[0007] The burner is provided in multiple parts and corresponds one-to-one with the multiple heat exchange tubes, and the burner is connected to one end of the heat exchange tube;

[0008] A combustion-supporting tube, wherein the combustion-supporting tube is connected to the end of all the heat exchange tubes away from the burner.

[0009] The present invention has at least the following beneficial effects: Multiple heat exchange tubes are provided, and the combustion air is connected to all heat exchange tubes in a separate manner. Therefore, the combustion air, after being heated by the heat exchanger or other structures, is diverted into multiple heat exchange tubes. The heat exchange tubes extend along the short end of the kiln and pass through the bottom of the kiln. Therefore, through the tube walls, the combustion air can exchange heat with the residual heat at the bottom of the kiln, thereby further increasing the temperature of the combustion air and reducing heat loss in the outer part of the bottom of the kiln. Multiple burners are provided and connected to multiple heat exchange tubes respectively. The reheated combustion air mixes and burns with the fuel in the burners, providing sufficient oxygen for the fuel. The combustion air, after exchanging heat with the residual heat at the bottom of the kiln, does not need to consume the heat generated by the fuel to increase its temperature, saving fuel consumption in the kiln, reducing costs, and achieving energy conservation and carbon reduction.

[0010] Multiple heat exchange tubes are spaced apart along the long end of the kiln to further improve the heat exchange efficiency of the combustion air within the heat exchange tubes.

[0011] As a further improvement to the above technical solution, the connection positions of the two adjacent heat exchange tubes and the two corresponding burners are opposite.

[0012] As a further improvement to the above technical solution, the heat exchange tube is inserted into the brickwork at the bottom of the kiln.

[0013] As a further improvement to the above technical solution, the combustion-supporting pipe includes a main combustion-supporting pipe and two branch combustion-supporting pipes. The main combustion-supporting pipe is connected to two branch combustion-supporting pipes. The two branch combustion-supporting pipes are respectively located at both ends of the kiln along the second direction. The branch combustion-supporting pipes extend along the first direction, and the ends of multiple heat exchange tubes away from the burner are respectively staggered and connected to the two branch combustion-supporting pipes.

[0014] As a further improvement to the above technical solution, the heat exchange tubes and the combustion-supporting branch pipes are laid at intervals along the vertical direction and are connected to the outside of the kiln through the first connector.

[0015] As a further improvement to the above technical solution, the first connector is inclined along the first direction and the up and down direction.

[0016] As a further improvement to the above technical solution, the first connector includes a first telescopic tube and two hose clamps. The two ends of the first telescopic tube are respectively sleeved on the heat exchange tube and the combustion-supporting branch pipe, and locked by the two hose clamps.

[0017] As a further improvement to the above technical solution, the heat exchange tube and the burner are positioned vertically opposite each other and connected to the outside of the kiln via a second connector.

[0018] As a further improvement to the above technical solution, the second connector includes an elbow, a pipe section, a valve, and a second telescopic pipe connected sequentially from bottom to top. The elbow is connected to the heat exchange pipe, and the second telescopic pipe is connected to the burner.

[0019] This utility model discloses a kiln, including the combustion air energy-saving device as described in any of the above claims.

[0020] The beneficial effects of this utility model are at least as follows: the combustion air energy-saving device uses the waste heat at the bottom of the kiln to reheat the combustion air. It has a simple structure, enhances the utilization rate of the waste heat at the bottom of the kiln, reduces fuel consumption, and makes the kiln's combustion system more energy-efficient. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0022] Figure 1 This is a side view of the kiln provided in an embodiment of the present utility model;

[0023] Figure 2yes Figure 1 Enlarged view of point A;

[0024] Figure 3 This is a cross-sectional view of the kiln provided in an embodiment of this utility model;

[0025] Figure 4 yes Figure 3 Enlarged view of point B;

[0026] Figure 5 yes Figure 3 Enlarged view of point C;

[0027] Figure 6 yes Figure 3 Enlarged diagram of point D;

[0028] Figure 7 This is a schematic diagram of the arrangement of heat exchange tubes and bricks provided in this embodiment of the utility model.

[0029] The following labels are shown in the attached diagram:

[0030] 100. Combustion-aiding air energy-saving device;

[0031] 200. Heat exchanger tubes;

[0032] 300. Burner;

[0033] 400, Combustion-supporting pipe; 410, Main combustion-supporting pipe; 420, Branch combustion-supporting pipe; 430, Preheating pipe;

[0034] 500. First connecting piece; 510. First telescopic pipe; 520. Hose clamp;

[0035] 600. Second connector; 610. Elbow; 620. Pipe section; 630. Valve; 640. Second expansion joint;

[0036] 700. Kiln; 710. Bricks and stones;

[0037] 800. Fan. Detailed Implementation

[0038] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0039] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] In the description of this utility model, the use of terms such as "several" means one or more, with "multiple" meaning two or more. Terms like "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of terms like "first," "second," and "third" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, the quantity of indicated technical features, or the sequential relationship between indicated technical features.

[0041] It should be noted that in the attached diagram, the X direction points from the rear to the front of the kiln; the Y direction points from the right side to the left of the kiln; and the Z direction points from the bottom to the top of the kiln.

[0042] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0043] Reference Figures 1 to 7 The following are several embodiments of a combustion-supporting air energy-saving device and a kiln of this utility model.

[0044] like Figures 1 to 7 As shown in the figure, an energy-saving combustion air device 100 of this utility model is applied to a kiln 700. The energy-saving combustion air device 100 includes a heat exchange tube 200, a burner 300, and a combustion air tube 400. The two ends of the heat exchange tube 200 are respectively connected to the burner 300 and the combustion air tube 400. The combustion air enters the combustion air tube 400 from outside the kiln 700. The combustion air tube 400 passes through the kiln 700. The temperature of the combustion air is increased by the waste heat at the top of the kiln 700, thereby achieving the purpose of energy saving and consumption reduction.

[0045] It is understandable that the heat exchange tube 200 extends along the second direction and passes through the bottom end of the kiln 700, where the second direction is the direction of the short end of the kiln 700, that is, the heat exchange tube 200 is installed on opposite sides of the kiln 700, such as... Figure 3 As shown.

[0046] In this way, the combustion air output from the combustion-supporting pipe 400 is input into the heat exchange pipe 200. The combustion air exchanges heat with the residual heat at the bottom of the kiln 700 through the pipe wall of the heat exchange pipe 200, further increasing the temperature of the combustion air and making the combustion in the kiln 700 more energy-efficient and energy-saving.

[0047] Understandably, the high-temperature combustion air output from heat exchanger 200 is fed into burner 300 to provide sufficient oxygen, supporting complete combustion of fuel in kiln 700. This helps improve combustion efficiency, reduce waste of unburned fuel, and thus lower costs. The high-temperature combustion air also prevents flameout, preventing the fuel combustion heat from being absorbed by the combustion air and falling below the ignition point, which could lead to flameout.

[0048] Understandably, in order to further improve the heat exchange efficiency of the combustion air and the bottom of the kiln 700, multiple heat exchange tubes 200 are provided and spaced along a first direction, which is the direction of the long end of the kiln 700, such as... Figure 7 As shown. One end of all heat exchange tubes 200 is connected to the combustion-supporting tube 400, so that the combustion-supporting air output from the combustion-supporting tube 400 is diverted to multiple heat exchange tubes 200, and heat exchange and temperature rise with the waste heat at the bottom of the kiln 700 through multiple heat exchange tubes 200.

[0049] In this embodiment, the first direction is the front-to-back direction, and the second direction is the left-to-right direction. That is, multiple heat exchange tubes 200 are arranged at intervals along the front-to-back direction, and the heat exchange tubes 200 are inserted into the left and right sides of the kiln 700 along the left-to-right direction.

[0050] It is understandable that there are multiple burners 300, each corresponding to a heat exchange tube 200. Each burner 300 is connected to a heat exchange tube 200. The combustion air, heated by the heat exchange tube 200, provides sufficient high-temperature oxygen to the fuel, ensuring sufficient combustion of the fuel and improving the combustion efficiency of the kiln 700.

[0051] With this configuration, the combustion-supporting pipe 400 utilizes the waste heat from the top of the kiln 700 to heat the combustion air, and the heat exchange pipe 200 utilizes the waste heat from the bottom of the kiln 700 to heat the combustion air, thereby increasing the temperature of the combustion air from the original 120-150 degrees Celsius to over 150-180 degrees Celsius. Theoretically, this can save approximately 1.2% of energy consumption. Based on a 200-meter-long kiln 700 in India, it can bring in 81,260 kcal of sensible heat per hour, equivalent to 9.8 standard cubic meters of natural gas per hour, saving 1.2% of India's natural gas consumption per hour.

[0052] It is understandable that the spacing between any two adjacent heat exchange tubes 200 is equal, so that the multiple heat exchange tubes 200 are evenly distributed in the front-to-back direction, such as... Figure 7 As shown.

[0053] In some embodiments, each heat exchange tube 200 is connected to the corresponding burner 300 at the same position, that is, all burners 300 are located on the left or right side of the kiln 700, which facilitates unified installation and management.

[0054] In this embodiment, the connection positions of two adjacent heat exchange tubes 200 and their corresponding two burners 300 are opposite, such as... Figure 2 As shown. Since the heat exchange tubes 200 extend in the left and right direction, in two adjacent heat exchange tubes 200, the left end of one heat exchange tube 200 is connected to the corresponding burner 300, and the right end of the other heat exchange tube 200 is connected to the corresponding burner 300.

[0055] With this configuration, multiple burners 300 are staggered and connected to the left or right ends of multiple heat exchange tubes 200. When the combustion air is mixed with the fuel through the burners 300 and sprayed into the kiln, the flames of the multiple burners 300 are evenly distributed in the left and right directions of the kiln 700. This allows the temperature field inside the kiln 700 to be evenly distributed, reducing the temperature difference between the cross section and the cross-section. This allows the billet products to be heated more evenly, reducing product defects caused by uneven temperature, and preventing the flames from being concentrated on one side of the kiln 700.

[0056] Understandably, multiple burners 300 are installed alternately on the left and right sides of the kiln 700, and the connection between the burners 300 and the heat exchange tubes 200 is located outside the kiln 700 for easy maintenance and replacement.

[0057] It is understandable that the bottom of the kiln 700 is constructed of bricks and stones 710, and the heat exchange tubes 200 are installed at the bottom of the kiln 700. In reality, the heat exchange tubes 200 are installed through the bottom bricks and stones 710 of the kiln 700. Figure 3 and Figure 7 As shown, the combustion air is reheated by the heat from the outer part of the kiln bottom, which can not only increase the temperature of the combustion air and save energy, but also solve the problem of heat dissipation recovery at the bottom of the kiln 700.

[0058] In this embodiment, the heat exchange tube 200 is installed inside the brickwork 710 at the bottom of the kiln 700, facilitating the use of residual heat from the kiln bottom for heat exchange by the combustion air. Figure 7 As shown.

[0059] In this embodiment, the combustion-supporting pipe 400 includes a main combustion-supporting pipe 410 and two branch combustion-supporting pipes 420. Two branch combustion-supporting pipes 420 are laid at both ends of the kiln 700 along the second direction, i.e., the two branch combustion-supporting pipes 420 are laid at the left and right ends of the kiln 700, respectively. To avoid interference between the branch combustion-supporting pipes 420 and the burner 300, brick blanks, and other structures, the two branch combustion-supporting pipes 420 are located at the inner bottom of the kiln 700. One end of the main combustion-supporting pipe 410 is connected to the two branch combustion-supporting pipes 420 at the outer bottom of the kiln 700, allowing the combustion air in the main combustion-supporting pipe 410 to be diverted into the two branch combustion-supporting pipes 420, resulting in a simple structure.

[0060] It is understandable that the combustion-supporting branch pipe 420 extends along the first direction, that is, the combustion-supporting branch pipe 420 extends along the front-to-back direction. With this arrangement, the extension direction of the two combustion-supporting branch pipes 420 is the same as the arrangement direction of the multiple heat exchange tubes 200, and one end of the multiple heat exchange tubes 200 is alternately connected to the two combustion-supporting branch pipes 420.

[0061] Since multiple burners 300 are interleaved and connected to multiple heat exchange tubes 200, and the other end of the heat exchange tubes 200 is connected to the combustion tube 400, the ends of the multiple heat exchange tubes 200 arranged along the front-to-back spacing that are away from the burners 300 are respectively interleaved and connected to two of the combustion tubes 420. That is, in two adjacent heat exchange tubes 200, the end of one heat exchange tube 200 that is away from the burners 300 is connected to the combustion tube 420 located on the left, and the end of the other heat exchange tube 200 that is away from the burners 300 is connected to the combustion tube 420 located on the right.

[0062] With this configuration, the combustion air is diverted to two combustion air distribution pipes 420, and then diverted again from the connection point between the combustion air distribution pipes 420 and multiple heat exchange pipes 200 into the multiple heat exchange pipes 200. This allows natural air to be input from the left or right end of the heat exchange pipes 200 through the combustion air distribution pipes 420, and the combustion air is output to the burner 300 after heat exchange through the heat exchange pipes 200.

[0063] In this embodiment, there are eight heat exchange tubes 200 and eight burners 300, with four burners 300 located on the left side wall of the kiln 700 and the other four burners 300 located on the right side wall of the kiln 700, as shown below. Figure 1 As shown. The left ends of four heat exchange tubes 200 are connected to the four burners 300 located on the left side of the kiln 700, and the right ends are connected to the combustion-supporting branch pipe 420 located on the right side; the left ends of the other four heat exchange tubes 200 are connected to the combustion-supporting branch pipe 420 located on the left side, and the right ends are connected to the four burners 300 located on the right side of the kiln 700.

[0064] In some embodiments, the connection point between the combustion-supporting pipe 420 and the heat exchange pipe 200 is located inside the kiln 700. The combustion-supporting pipe 420 can be connected to the heat exchange pipe 200 through a tee connector, allowing the combustion-supporting air to be quickly and directly introduced into the heat exchange pipe 200, while maintaining the high temperature of the combustion-supporting air.

[0065] In this embodiment, the connection point between the combustion-supporting pipe 420 and the heat exchange pipe 200 is located outside the kiln 700, facilitating subsequent maintenance, repair, and replacement. Figure 4 As shown. Specifically, the heat exchange tube 200 extends in the left-right direction, and the combustion-supporting branch pipe 420 extends in the front-back direction. Their extension directions are perpendicular to each other. Since the combustion-supporting branch pipe 420 is located inside the kiln 700, the heat exchange tube 200 and the combustion-supporting branch pipe 420 are laid at intervals in the vertical direction to ensure that their arrangement does not interfere with each other, as shown. Figure 4 and Figure 5 As shown.

[0066] It is understood that the heat exchange tube 200 is located above or below the combustion-supporting branch pipe 420. In this embodiment, the combustion-supporting branch pipe 420 is located above the heat exchange tube 200, so that the combustion-supporting air is input into the heat exchange tube 200 from top to bottom, such as... Figure 4 As shown.

[0067] It is understandable that the heat exchange tube 200 and the combustion-supporting branch pipe 420 are connected to the outside of the kiln 700 through the first connector 500, such as... Figure 2 and Figure 4 As shown. Specifically, taking the right end of the heat exchange tube 200 connected to the combustion-supporting branch pipe 420 located on the right as an example, the right end of the heat exchange tube 200 extends out of the kiln 700, and the right side of the combustion-supporting branch pipe 420 is provided with a connecting port. The two ends of the first connector 500 are respectively connected to the connecting port and the right end of the heat exchange tube 200.

[0068] In some embodiments, the communication port is vertically opposite to the heat exchange tube 200, the first connector 500 is U-shaped, and the upper and lower ends of the first connector 500 are respectively connected to the communication port and the heat exchange tube 200.

[0069] In this embodiment, the connecting port is located above the adjacent heat exchange tube 200, causing the first connector 500 to be inclined along the first direction and the vertical direction, such as... Figure 2 As shown, extending the length of the first connector 500 makes the bending angle of the first connector 500 more gradual, making it easier for the combustion air to be input into the heat exchange tube 200. This avoids stress concentration in the first connector 500 with an excessively large bending angle, which could lead to cracks in the first connector 500 and cause the tube to burst.

[0070] It is understandable that multiple first connectors 500 located on the left or right side of the kiln 700 are arranged parallel to each other in the front-to-back direction, so that the multiple first connectors 500 are arranged in an orderly manner, such as... Figure 1As shown. In the projection in the second direction, the plurality of first connectors 500 located on the left side of the kiln 700 and the plurality of first connectors 500 located on the right side of the kiln 700 intersect, that is, the tilt direction of the plurality of first connectors 500 on the left side of the kiln 700 is opposite to the tilt direction of the plurality of first connectors 500 on the right side of the kiln 700, so as to avoid the arrangement of the first connectors 500 from extending the front and rear length of the kiln 700.

[0071] It is understood that the first connector 500 includes a first telescopic tube 510 and a hose clamp 520, such as Figure 4 As shown. Specifically, there are two hose clamps 520. The two ends of the first telescopic tube 510 are respectively fitted onto the connecting port and the opening of the heat exchange tube 200. Then, the hose clamps 520 are fitted onto the outside of the first telescopic tube 510, and tightened with screws to lock the first telescopic tube 510 and the connecting port to the heat exchange tube 200. The hose clamps 520 have a balanced torsional torque, are securely and tightly locked, and facilitate the disassembly and replacement of the heat exchange tube 200.

[0072] In this embodiment, the first telescopic tube 510 is a corrugated tube.

[0073] It is understandable that the heat exchange tube 200 and the burner 300 correspond to each other in the vertical direction. The end of the heat exchange tube 200 away from the first connecting member 500 extends in the horizontal direction and extends out of the kiln 700. The heat exchange tube 200 and the burner 300 are connected outside the kiln 700 through the second connecting member 600. Figure 5 As shown.

[0074] It is understood that the second connector 600 includes, from bottom to top, an elbow 610, a pipe section 620, a valve 630, and a second telescopic pipe 640, such as... Figure 5 As shown. Specifically, one end of the elbow 610 faces left and right and is threaded to the heat exchange tube 200, while the other end faces upward and is connected to the pipe section 620. The pipe section 620 is a straight pipe section extending vertically, and its upper end is connected to a valve 630, which is used to regulate the flow rate of the combustion air. The two ends of the second telescopic pipe 640 are connected to the valve 630 and the burner 300, respectively, thereby enabling the combustion air to be output from the heat exchange tube 200 to the burner 300.

[0075] In this embodiment, valve 630 is an aluminum alloy butterfly valve, which can operate stably under high temperature and high pressure environments and has good sealing performance. The second telescopic pipe 640 is a bellows.

[0076] Understandably, when the heat exchange tube 200 malfunctions, the two corrugated sections of the first connector 500 and the second connector 600 can be removed, and the heat exchange tube 200 can be pulled out from the left or right side of the kiln 700. This facilitates later maintenance or replacement of the heat exchange tube 200, and the operation is simple. After maintenance or with a new heat exchange tube 200, it can be re-inserted into the left and right sides of the kiln 700, and then the first connector 500 and the second connector 600 can be reinstalled.

[0077] Understandably, due to the relatively complex structure of the second connector 600, when replacing or repairing the heat exchange tube 200, the heat exchange tube 200 can be pulled out of the kiln 700 from the end connected to the burner 300.

[0078] Understandably, the main combustion pipe 410 extends vertically along the side of the kiln 700, with its upper and lower ends extending to the top and bottom of the kiln 700 respectively in the left and right directions. The lower end of the main combustion pipe 410 branches off at the bottom of the kiln 700 and connects to two auxiliary combustion pipes 420. The upper end of the main combustion pipe 410 is connected to a blower 800, such as... Figure 3 As shown. The combustion-supporting pipe 400 also includes a preheating pipe 430. The main combustion-supporting pipe 410 branches into multiple preheating pipes 430 at the top of the kiln 700. The multiple preheating pipes 430 pass through the left and right ends of the top of the kiln 700, and exit the kiln from the left or right side, as shown. Figure 6 As shown.

[0079] In this way, when the blower 800 is started, the negative pressure of the blower 800 draws air from outside the kiln 700 into the preheating pipe 430 as combustion air. The combustion air first passes through the preheating pipe 430, which is installed at the top of the kiln 700, and exchanges heat with the waste heat at the top of the kiln 700 through the pipe wall of the preheating pipe 430 to increase the temperature of the combustion air. Then, it is fed into the heat exchange pipe 200 along the main combustion pipe 410 and the combustion branch pipe 420, and exchanges heat with the waste heat at the bottom of the kiln 700 through the pipe wall of the heat exchange pipe 200, thereby achieving the purpose of energy saving and consumption reduction.

[0080] Understandably, the combustion air energy-saving device 100 also includes insulation components. Specifically, the insulation components can wrap around the combustion air pipe 400 to prevent significant heat loss of the combustion air during transmission. The insulation components can also wrap around both ends of the heat exchange pipe 200 extending from the kiln 700 to prevent the combustion air from exchanging heat with the air outside the kiln 700 through the pipe wall of the heat exchange pipe 200, thus preventing a decrease in the temperature of the combustion air.

[0081] In this embodiment, the insulation component is insulation cotton.

[0082] Understandably, heat exchange tube 200 has a diameter of 76 mm, is made of 321 stainless steel, and has a thickness of 2 mm. The inlet diameter of heat exchange tube 200 connecting to combustion support pipe 420 is 76 mm, and the outlet diameter of heat exchange tube 200 connecting to burner 300 is 42 mm.

[0083] Understandably, the diameter of the main combustion-supporting pipe 410 is 114 mm, and the diameter of the combustion-supporting branch pipe 420 is 89 mm.

[0084] like Figure 1 and Figure 3 As shown, a kiln 700 according to an embodiment of the present invention includes a combustion air energy-saving device 100. The kiln 700 is provided with a heating channel, and a heat exchange tube 200 is installed inside the heating channel.

[0085] Understandably, during the early construction of the kiln 700, a heating channel was reserved in the bottom layer of bricks 710 using a masonry method. Since the burner 300 and the heat exchange tube 200 correspond to each other vertically, the heating channel is determined according to the position of the burner 300, without changing the original design structure of the kiln 700, making it easy to install the combustion air energy-saving device 100 on the kiln 700.

[0086] Understandably, the heating channel is pre-reserved according to the diameter of the heat exchange tube 200. When installing the heat exchange tube 200, the length of the two ends of the heat exchange tube 200 extending out of the left and right sides of the kiln 700 can be adjusted according to the positional distance between the heat exchange tube 200 and the combustion branch pipe 420 and the positional distance between the heat exchange tube 200 and the burner 300. This allows the combustion air energy-saving device 100 to be installed more flexibly and the gap between the heat exchange tube 200 and the burner 300 to be adjusted according to the site conditions.

[0087] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A combustion-supporting air energy-saving device, characterized in that, Including: The heat exchange tubes are provided in multiple sections and spaced apart along a first direction. The heat exchange tubes extend along a second direction and pass through the bottom of the kiln. The first direction is the direction of the long end of the kiln, and the second direction is the direction of the short end of the kiln. The burner is provided in multiple parts and corresponds one-to-one with the multiple heat exchange tubes, and the burner is connected to one end of the heat exchange tube; A combustion-supporting tube, wherein the combustion-supporting tube is connected to the end of all the heat exchange tubes away from the burner.

2. The combustion-supporting air energy-saving device according to claim 1, characterized in that, The connection positions of the two adjacent heat exchange tubes and the two corresponding burners are opposite.

3. The combustion-supporting wind energy-saving device according to claim 1, characterized in that, The heat exchange tubes are installed inside the brickwork at the bottom of the kiln.

4. The combustion-supporting wind energy-saving device according to claim 1, characterized in that, The combustion-supporting pipe includes a main combustion-supporting pipe and combustion-supporting branch pipes. The main combustion-supporting pipe is connected to two combustion-supporting branch pipes. The two combustion-supporting branch pipes are respectively located at both ends of the kiln along the second direction. The combustion-supporting branch pipes extend along the first direction. The ends of multiple heat exchange tubes away from the burner are respectively staggered and connected to the two combustion-supporting branch pipes.

5. The combustion-supporting air energy-saving device according to claim 4, characterized in that, The heat exchange tubes and the combustion-supporting pipes are laid at intervals along the vertical direction and are connected to the outside of the kiln through the first connector.

6. The combustion-supporting wind energy-saving device according to claim 5, characterized in that, The first connector is inclined along the first direction and the up and down direction.

7. The combustion-supporting wind energy-saving device according to claim 5, characterized in that, The first connector includes a first telescopic tube and two hose clamps. The two ends of the first telescopic tube are respectively fitted onto the heat exchange tube and the combustion-supporting branch pipe, and are locked by the two hose clamps.

8. The combustion-supporting wind energy-saving device according to claim 1, characterized in that, The heat exchange tube and the burner are positioned opposite each other and connected to the outside of the kiln via a second connector.

9. The combustion-supporting wind energy-saving device according to claim 8, characterized in that, The second connector includes an elbow, a pipe section, a valve, and a second telescopic pipe connected sequentially from bottom to top. The elbow is connected to the heat exchange pipe, and the second telescopic pipe is connected to the burner.

10. A kiln, characterized in that, Includes the combustion-supporting wind energy-saving device as described in any one of claims 1 to 9.

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