Combustion-supporting air inlet device of tunnel kiln

Abstract

The utility model relates to a tunnel kiln combustion-supporting air inlet device, which belongs to the technical field of kiln combustion supporting and comprises a kiln shell, a bottom plate is fixed at the bottom of the kiln shell, the edge of the bottom plate extends out of two sides of the kiln shell, an air inlet is arranged at the bottom of the side wall of the kiln shell, and an air inlet cylinder is rotatably clamped in the air inlet. One end of the air inlet barrel extends into the kiln shell, an outer adjusting barrel is fixed to one end of the air inlet barrel, a strip-shaped air outlet is formed in the outer wall of the outer adjusting barrel, an input structure is rotationally clamped in one end of the air inlet barrel, the input structure comprises a clamping disc rotationally clamped in one end of the air inlet barrel, and an input channel is fixed to one side of the clamping disc. According to the device, waste heat can be used for heating combustion-supporting gas, the air inlet range and the air inlet direction can be adjusted according to requirements during air inlet, after combustion-supporting is conducted on fuel, gas ascends and circulates and then is exhausted, smoke waste heat is used during exhausting, and the effect of reasonably utilizing resources is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of kiln combustion-supporting technology, in particular to a tunnel kiln combustion-supporting air inlet device. Background Art

[0002] In the process of ceramic production, kilns are needed for firing, and tunnel kilns are a commonly used thermal equipment for batch firing of ceramics. During firing, continuous heating treatment is required to heat the kiln. In addition, fuel needs to be transported and a combustion-supporting air inlet device needs to be provided during firing. When in use, the raw materials are placed on a tooling or mobile rack and then placed in the kiln body for continuous firing.

[0003] For example, Chinese utility model patent document CN221724925U discloses a kiln combustion-supporting air inlet device, comprising a kiln body, a combustion chamber disposed within the kiln body, an arc-shaped movable cavity disposed above the combustion chamber, a plurality of air inlet slots disposed on the bottom surface of the movable cavity communicating with the combustion chamber, and a hollow air outlet box disposed within the movable cavity, movable along its arc-shaped bottom wall. The device comprises an air supply assembly having an air inlet positioned within the kiln's insulation chamber, and the air supply assembly is controlled to blow air into a connecting air pipe. The blown air enters the hollow air outlet box and is then blown into the combustion chamber through the air inlet slots via the plurality of air outlet holes on the bottom surface. As the driving assembly drives the movable block to move within the movable slots, the air outlet holes on the bottom surface of the hollow air outlet box sequentially pass through the plurality of air inlet slots, achieving multi-angle air intake and uniform combustion-supporting air intake. Furthermore, the insulation chamber design heats the input air, minimizing the power increase caused by cold air injection and improving practicality.

[0004] In the above document, a movable hollow air outlet box is used to change the air inlet position to achieve multi-angle air intake, but the air intake range is small, and the air after combustion needs to be discharged. The air inlet device set at the top of the combustion chamber is difficult to play a combustion-supporting effect. Part of the air will be directly extracted from the exhaust flue when it is not used, which will cause the consumption of gas resources. The combustion-supporting effect needs to be improved. Utility Model Content

[0005] In order to overcome the technical defects of the existing technology, the utility model provides a tunnel kiln combustion-supporting air inlet device, which can utilize waste heat to heat the combustion-supporting gas, and can adjust the air inlet range and direction according to demand when introducing air. After the fuel is combusted, the gas rises and circulates, and then is discharged. When discharged, the waste heat of the flue gas is reused to achieve the effect of rational utilization of resources.

[0006] The technical solution adopted by the present invention is: it includes a kiln shell, which is an outer shell made of thermal insulation material. When in use, the raw materials to be fired are pushed in, and a bottom plate is fixed to the bottom of the kiln shell. The edges of the bottom plate extend to the outside of the two sides of the kiln shell. An air inlet is provided at the bottom of the side wall of the kiln shell, and multiple air inlets are provided on both sides of the lower part of the kiln shell. An air inlet tube is rotatably connected in the air inlet, one end of the air inlet tube extends into the kiln shell, and an outer adjustment tube is fixed to one end of the air inlet tube, a strip air outlet is provided on the outer wall of the outer adjustment tube, and an input structure is rotatably connected in one end of the air inlet tube.

[0007] Preferably, the input structure includes a clamping disk that is rotatably clamped in one end of the air inlet tube. The clamping disk can allow the air inlet tube to rotate while preventing gas leakage. An input channel is fixed on one side of the clamping disk. There are at least two input channels. A center hole is opened on the clamping disk, and the input channel is located outside the center hole.

[0008] Preferably, the input channel is provided with a connecting pipe connected to an external air pump device, the input channel is fixed to the base plate through a support seat, and the external air pump presses the combustion-supporting gas into the connecting pipe.

[0009] Preferably, the inner adjusting cylinder is rotatably clamped in the outer adjusting cylinder, an auxiliary air outlet is provided on the outer wall of the inner adjusting cylinder, and end face air outlets are provided on the end faces on the same side of the inner adjusting cylinder and the outer adjusting cylinder. In order to facilitate increasing the air outlet direction, the positions of the end face air outlets on the inner adjusting cylinder and the outer adjusting cylinder do not correspond, and are staggered.

[0010] Preferably, a power mechanism is fixed on the base plate, and the power mechanism includes a support plate fixed on the base plate, an internal power motor is fixed on the support plate, a center rod is fixed on the output shaft of the internal power motor, the center rod passes through the center hole, one end of the center rod extends into the inner adjustment cylinder, and is fixed to the inner wall of the inner adjustment cylinder through a fixing plate, and the fixing plate is close to the edge of the inner adjustment cylinder, and the power mechanism is used to control the separate rotation of the inner adjustment cylinder and the outer adjustment cylinder.

[0011] Preferably, an external power motor is fixed on the support plate, the output shaft of the external power motor passes through the support plate and is fixed with a power wheel, a center cylinder is rotatably sleeved on the outer wall of the center rod, a transmission wheel is fixed on the outer wall of the center cylinder, and a synchronous belt is provided on the power wheel and the transmission wheel. One end of the center cylinder extends to one side of the fixed plate and is fixed to the inner wall of the outer adjustment cylinder through an extension plate.

[0012] Preferably, a heat exchange pipe is provided outside the input channel, the heat exchange pipe is in contact with the outer wall of the input channel, and the input channel is connected to a flue gas extraction device or an exhaust device.

[0013] The beneficial effects of the present invention are as follows: the device can utilize waste heat to heat the combustion-supporting gas, and can adjust the air intake range and direction according to demand when intake air. After the fuel is combusted, the gas rises and circulates, and then is discharged. When discharged, the waste heat of the flue gas is utilized, thereby achieving the effect of rational utilization of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0015] Figure 2 This is a schematic diagram of the heat exchange pipeline structure of the utility model.

[0016] Figure 3 This is a schematic diagram of the synchronous belt structure of the utility model.

[0017] Figure 4 This is a schematic diagram of the input channel structure of the utility model.

[0018] Figure 5 This is a schematic diagram of the structure of the inner regulating cylinder of the utility model.

[0019] Figure 6 This is a schematic diagram of the cross-sectional structure of the outer regulating cylinder of the present utility model.

[0020] Figure 7 This is a schematic diagram of the end face air outlet position structure of the utility model.

[0021] Explanation of the accompanying drawings: In the figure: 1. Kiln shell; 2. Air inlet tube; 201. External adjustment tube; 202. Strip air outlet; 203. Internal adjustment tube; 204. Auxiliary air outlet; 205. End air outlet; 3. Input structure; 301. Snap-in plate; 302. Input channel; 303. Connecting pipe; 4. Power mechanism; 401. Support plate; 402. Internal power motor; 403. Center rod; 404. Fixed plate; 405. External power motor; 406. Center tube; 407. Synchronous belt; 408. Extension plate; 5. Heat exchange pipe. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] like Figure 1-Figure 7As shown, this embodiment provides a tunnel kiln combustion-supporting air inlet device, including a kiln shell 1, the kiln shell 1 is an outer shell made of heat-insulating material. When in use, the raw materials to be fired are pushed in, the bottom of the kiln shell 1 is fixed with a bottom plate, the edge of the bottom plate extends to the outside of the two sides of the kiln shell 1, the bottom of the side wall of the kiln shell 1 is provided with an air inlet, and multiple air inlets are provided on both sides of the lower part of the kiln shell 1. An air inlet tube 2 is rotatably connected in the air inlet, one end of the air inlet tube 2 extends into the kiln shell 1, and one end of the air inlet tube 2 is provided. An outer regulating cylinder 201 is fixed, and a strip-shaped air outlet 202 is provided on the outer wall of the outer regulating cylinder 201. An input structure 3 is rotatably clamped in one end of the air inlet cylinder 2. The input structure 3 includes a clamping disk 301 rotatably clamped in one end of the air inlet cylinder 2. The clamping disk 301 can allow the air inlet cylinder 2 to rotate while avoiding gas leakage. An input channel 302 is fixed on one side of the clamping disk 301. There are at least two input channels 302. A center hole is provided on the clamping disk 301, and the input channel 302 is located outside the center hole.

[0024] The input channel 302 is provided with a connecting pipe 303 connected to an external air pump device. The input channel 302 is fixed to the base plate through a support seat, and the external air pump presses the combustion-supporting gas into the connecting pipe 303 .

[0025] The inner adjusting cylinder 203 is rotatably connected to the outer adjusting cylinder 201, and an auxiliary air outlet 204 is provided on the outer wall of the inner adjusting cylinder 203. End face air outlets 205 are provided on the end faces on the same side of the inner adjusting cylinder 203 and the outer adjusting cylinder 201. In order to facilitate increasing the air outlet direction, the positions of the end face air outlets 205 on the inner adjusting cylinder 203 and the outer adjusting cylinder 201 do not correspond, and are staggered.

[0026] A power mechanism 4 is fixed on the base plate, and the power mechanism 4 includes a support plate 401 fixed on the base plate, an internal power motor 402 is fixed on the support plate 401, and a center rod 403 is fixed on the output shaft of the internal power motor 402. The center rod 403 passes through the center hole, and one end of the center rod 403 extends into the inner adjustment cylinder 203 and is fixed to the inner wall of the inner adjustment cylinder 203 through the fixing plate 404. The fixing plate 404 is close to the edge of the inner adjustment cylinder 203. The power mechanism 4 is used to control the separate rotation of the inner adjustment cylinder 203 and the outer adjustment cylinder 201.

[0027] An external power motor 405 is fixed on the support plate 401. The output shaft of the external power motor 405 passes through the support plate 401 and is fixed with a power wheel. A center tube 406 is rotatably sleeved on the outer wall of the center rod 403. A transmission wheel is fixed on the outer wall of the center tube 406. A synchronous belt 407 is provided on the power wheel and the transmission wheel. One end of the center tube 406 extends to the side of the fixed plate 404 and is fixed to the inner wall of the external adjustment tube 201 through an extension plate 408.

[0028] A heat exchange pipe 5 is provided outside the input channel 302. The heat exchange pipe 5 is in contact with the outer wall of the input channel 302. The input channel 302 is connected to a flue gas extraction device or an exhaust device. For example, an exhaust device is provided at the top or the air outlet end of the kiln shell 1, and then the heat source is introduced into the heat exchange pipe 5. The heat can be transferred to the input channel 302 through the heat exchange pipe 5, thereby heating the combustion-supporting gas.

[0029] This device can utilize waste heat to heat the combustion-supporting gas, and can adjust the air intake range and air intake direction according to demand when the air is introduced. After the fuel is combusted, the gas rises and circulates, and then is discharged. When discharged, the waste heat of the flue gas is reused to achieve the effect of rational use of resources. When in use, when it is necessary to adjust the air outlet range, the internal power motor 402 and the external power motor 405 are used to drive the inner adjustment cylinder 203 and the outer adjustment cylinder 201 to rotate, and then adjust the direction of the strip air outlet 202. At the same time, when the rotation speeds of the inner adjustment cylinder 203 and the outer adjustment cylinder 201 are different, the air outlet resistance and the air outlet range can be changed; when the inner adjustment cylinder 203 and the outer adjustment cylinder 201 are rotated in different directions, until the end face air outlet 205 is unblocked, the gas can be blown toward the center of the kiln shell 1.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A tunnel kiln combustion-supporting air inlet device, comprising a kiln shell (1), a bottom plate fixed to the bottom of the kiln shell (1), the edges of the bottom plate extending beyond both sides of the kiln shell (1), characterized in that: An air inlet is provided at the bottom of the side wall of the kiln shell (1), an air inlet tube (2) is rotatably engaged in the air inlet, one end of the air inlet tube (2) extends into the kiln shell (1), and an outer regulating tube (201) is fixed to one end of the air inlet tube (2), a strip-shaped air outlet (202) is provided on the outer wall of the outer regulating tube (201), and an input structure (3) is rotatably engaged in one end of the air inlet tube (2).

2. The tunnel kiln combustion-supporting air inlet device according to claim 1, characterized in that: The input structure (3) comprises a clamping disc (301) rotatably clamped in one end of the air inlet tube (2), an input channel (302) being fixed on one side of the clamping disc (301), at least two input channels (302), a central hole being provided on the clamping disc (301), and the input channels (302) being located outside the central hole.

3. The tunnel kiln combustion-supporting air inlet device according to claim 2, characterized in that: The input channel (302) is provided with a connecting pipe (303) connected to an external air pump device, and the input channel (302) is fixed to the bottom plate via a support seat.

4. The tunnel kiln combustion-supporting air inlet device according to claim 3, characterized in that: The inner adjusting cylinder (203) is rotatably engaged with the outer adjusting cylinder (201), an auxiliary air outlet (204) is provided on the outer wall of the inner adjusting cylinder (203), and an end surface air outlet (205) is provided on the end surface of the same side of the inner adjusting cylinder (203) and the outer adjusting cylinder (201).

5. The tunnel kiln combustion-supporting air inlet device according to claim 4, characterized in that: A power mechanism (4) is fixed on the base plate, and the power mechanism (4) includes a support plate (401) fixed on the base plate, an internal power motor (402) is fixed on the support plate (401), and a center rod (403) is fixed on the output shaft of the internal power motor (402), the center rod (403) passes through the center hole, one end of the center rod (403) extends into the inner adjustment cylinder (203), and is fixed to the inner wall of the inner adjustment cylinder (203) through a fixing plate (404), and the fixing plate (404) is close to the edge of the inner adjustment cylinder (203).

6. The tunnel kiln combustion-supporting air inlet device according to claim 5, characterized in that: An external power motor (405) is fixed on the support plate (401), the output shaft of the external power motor (405) passes through the support plate (401) and is fixed with a power wheel, a central tube (406) is rotatably sleeved on the outer wall of the central rod (403), a transmission wheel is fixed on the outer wall of the central tube (406), a synchronous belt (407) is provided on the power wheel and the transmission wheel, one end of the central tube (406) extends to the side of the fixed plate (404), and is fixed to the inner wall of the external adjustment tube (201) through an extension plate (408).

7. The tunnel kiln combustion-supporting air inlet device according to claim 6, characterized in that: A heat exchange pipe (5) is provided outside the input channel (302), the heat exchange pipe (5) is in contact with the outer wall of the input channel (302), and the input channel (302) is connected to a smoke extraction device or an exhaust device.

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