Heat exchange system for industrial furnace waste heat recovery

Abstract

The heat exchange system for industrial furnace waste heat recovery comprises a waste heat recovery box, supporting legs are fixedly connected to the four corners of the bottom of the waste heat recovery box, a temperature controller is fixedly installed at the bottom of the front face of the waste heat recovery box, and a processor is fixedly installed at the top of the front face of the waste heat recovery box. And a flue gas purification assembly is arranged on the left side of the waste heat recovery box. A motor is started to drive a rotating rod and stirring blades to rotate so as to stir and mix water and high-temperature gas in an inner cavity of a waste heat recovery box, the high-temperature gas can fully heat the water, an electric telescopic rod is started to push a moving plate to move, and the moving plate moves to drive a guide sleeve to slide on the surface of a guide rod; the moving plate moves to drive the displacement mounting plate and the motor to move, the motor moves to drive the rotating rod to rotate and move in the inner cavity of the sliding groove, the rotating rod rotates to drive the stirring blades to rotate and move to fully stir and mix water and high-temperature gas, and waste heat can be fully recycled.

Description

Technical Field

[0001] The invention relates to the technical field of waste heat recovery from industrial furnaces, and in particular to a heat exchange system for recovering waste heat from industrial furnaces. Background Art

[0002] A furnace is a type of kiln. According to the heat source, it can be divided into flame kiln and electric kiln. According to the condition of the heat source facing the blank, it can be divided into open flame kiln, muffle kiln and semi-muffle kiln. According to the type of calcined materials, it can be divided into ceramic kiln, cement kiln, glass kiln, enamel kiln, etc. The former can be divided into continuous kiln (tunnel kiln), semi-continuous kiln and intermittent kiln according to the operation method.

[0003] When recovering waste heat from industrial furnaces, a heat exchange system for waste heat recovery of industrial furnaces is required. The existing waste heat recovery efficiency of industrial furnaces is low, resulting in the inability to fully recover the high-temperature flue gas of the industrial furnaces during waste heat recovery, resulting in a large amount of heat waste. In addition, the flue gas emissions from industrial furnaces cause air pollution. Summary of the invention

[0004] The purpose of the present invention is to provide a heat exchange system for recovering waste heat from industrial furnaces, which has the advantages of improving the waste heat recovery efficiency and filtering the flue gas, and solves the problem that the waste heat recovery efficiency of existing industrial furnaces is low, resulting in the inability of the industrial furnaces to fully recover the high-temperature flue gas of the industrial furnaces during waste heat recovery, causing a large amount of heat waste, and the problem that the flue gas emissions from the industrial furnaces cause air pollution.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a heat exchange system for recovering waste heat from an industrial furnace, comprising a waste heat recovery box, the four corners of the bottom of the waste heat recovery box are fixedly connected with supporting legs, a temperature controller is fixedly installed at the bottom of the front of the waste heat recovery box, a processor is fixedly installed at the top of the front of the waste heat recovery box, a flue gas purification component is arranged on the left side of the waste heat recovery box, a displacement stirring component is arranged on the top of the waste heat recovery box, the bottom of the right side of the waste heat recovery box is connected with a water outlet pipe, the inner cavity of the water outlet pipe is connected with a first electric valve, the top of the right side of the waste heat recovery box is connected with a water supply pipe, the inner cavity of the water supply pipe is connected with a second electric valve, a temperature sensor is fixedly installed at the center of the bottom of the inner wall of the waste heat recovery box, and liquid level sensors are fixedly installed at the top and bottom of the left side of the inner wall of the waste heat recovery box.

[0006] As a preferred embodiment, the flue gas purification assembly includes a purification box, the right side of the purification box is fixedly connected to the top of the left side of the waste heat recovery box, the top of the purification box is connected to a flue gas inlet pipe, the inner cavity of the purification box is provided with a flue gas filter purification net, the left end of the flue gas filter purification net passes through the left side of the purification box and is fixedly connected to a pull plate, the left side of the pull plate is fixedly connected to a handle, the bottom of the purification box is connected to an exhaust pipe, and the end of the exhaust pipe away from the purification box is connected to the bottom of the left side of the waste heat recovery box.

[0007] As a preferred solution, a support plate is fixedly connected to the bottom of the right side of the inner wall of the purification box, and the top of the support plate is in contact with the bottom of the smoke filter purification net.

[0008] As a preferred solution, a sealing gasket is bonded to the top and bottom of the left side of the inner wall of the purification box, and the inner side of the sealing gasket is in contact with the surface of the smoke filter purification net.

[0009] As a preferred embodiment, the displacement stirring assembly includes a shell, the bottom of the shell is fixedly connected to the top of the waste heat recovery box, a sliding groove is opened at the center of the top of the inner wall of the waste heat recovery box, an electric telescopic rod is fixedly connected to the right side of the inner wall of the shell, a movable plate is fixedly connected to the left end of the electric telescopic rod, a displacement mounting plate is fixedly connected to the left side of the movable plate, a motor is fixedly connected to the bottom of the displacement mounting plate, a rotating rod is fixedly connected to the output end of the motor, the surface of the rotating rod is slidably connected to the inner cavity of the sliding groove, the bottom end of the rotating rod penetrates into the inner cavity of the waste heat recovery box, and a stirring blade is fixedly connected to the surface of the rotating rod.

[0010] As a preferred solution, a guide sleeve is fixedly connected to the top of the movable plate, a guide rod is slidably connected to the inner cavity of the guide sleeve, and the outer end of the guide rod is fixedly connected to the inner wall of the shell.

[0011] As a preferred solution, the length and width of the inner cavity of the sliding groove are both greater than the diameter of the rotating rod, and the height of the inner cavity of the sliding groove is less than the height of the sliding groove.

[0012] As a preferred solution, the input ends of the electric telescopic rod and the motor are both unidirectionally electrically connected to the output end of the processor, the input ends of the first electric valve and the second electric valve are both unidirectionally electrically connected to the output end of the processor, and the output ends of the temperature controller, temperature sensor and liquid level sensor are unidirectionally electrically connected to the input end of the processor.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention starts a motor to drive the rotating rod and the stirring blades to rotate, so as to stir and mix the water and the high-temperature gas in the inner cavity of the waste heat recovery box, so that the high-temperature gas can fully heat the water. The electric telescopic rod is started to push the movable plate to move, and the movement of the movable plate drives the guide sleeve to slide on the surface of the guide rod. The movement of the movable plate drives the displacement mounting plate and the motor to move. The movement of the motor drives the rotating rod to rotate and move in the inner cavity of the sliding groove. The rotation and movement of the rotating rod drives the stirring blades to rotate and move to fully stir and mix the water and the high-temperature gas, so that the waste heat can be fully recovered, thereby improving the waste heat recovery efficiency.

[0014] High-temperature flue gas enters the inner cavity of the purification box through the flue gas inlet pipe, and impurities in the flue gas are filtered through the flue gas filter purification net to prevent air pollution caused by flue gas emissions, thereby improving the environmental protection effect. The flue gas filter purification net can be easily disassembled and cleaned through the pull plate and handle. The filtered high-temperature gas enters the inner cavity of the waste heat recovery box through the outlet pipe, heats the inner cavity water of the waste heat recovery box, and achieves the purpose of waste heat recovery.

[0015] The temperature value for water heating can be set through the thermostat and sent to the processor. The temperature sensor senses the water temperature in real time and sends it to the processor for comparison. When the set temperature value is reached, the processor starts the first electric valve to open the water outlet pipe, allowing water to be discharged and collected through the water outlet pipe, and then closes the first electric valve. At the same time, when the lower liquid level sensor senses the water level line, the liquid level sensor sends an instruction to the processor, and the processor starts the second electric valve to open the water adding pipe, and water is added to the inner cavity of the waste heat recovery box through the water adding pipe. When the upper liquid level sensor senses the water level line, the liquid level sensor sends an instruction to the processor to close the second electric valve. The water can be changed automatically, which improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is an enlarged cross-sectional view of the three-dimensional structure of the flue gas purification component of the present invention; Figure 3 This is an enlarged cross-sectional view of the three-dimensional structure of the displacement stirring assembly of the present invention; Figure 4 It is a front view of the structure cross-section of the present invention; Figure 5 This is a schematic diagram of the system of the present invention.

[0017] In the figure: 1. Waste heat recovery box; 2. Support legs; 3. Temperature controller; 4. Processor; 5. Flue gas purification component; 51. Purification box; 52. Flue gas inlet pipe; 53. Flue gas filter purification net; 54. Pull plate; 55. Handle; 56. Exhaust pipe; 57. Support plate; 58. Sealing pad; 6. Displacement stirring component; 61. Shell; 62. Sliding groove; 63. Electric telescopic rod; 64. Moving plate; 65. Displacement mounting plate; 66. Motor; 67. Rotating rod; 68. Stirring blade; 69. Guide sleeve; 610. Guide rod; 7. Water outlet pipe; 8. First electric valve; 9. Water supply pipe; 10. Second electric valve; 11. Temperature sensor; 12. Liquid level sensor. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments. Embodiment one:

[0020] See also Figure 1-Figure 5 As shown, the present invention provides a heat exchange system for recovering waste heat from an industrial furnace, comprising a waste heat recovery box 1, wherein the four corners of the bottom of the waste heat recovery box 1 are fixedly connected with support legs 2, a temperature controller 3 is fixedly installed at the bottom of the front of the waste heat recovery box 1, a processor 4 is fixedly installed at the top of the front of the waste heat recovery box 1, a flue gas purification component 5 is arranged on the left side of the waste heat recovery box 1, a displacement stirring component 6 is arranged on the top of the waste heat recovery box 1, a water outlet pipe 7 is connected to the bottom of the right side of the waste heat recovery box 1, and the inner cavity of the water outlet pipe 7 is connected to a first electric valve 8, a water adding pipe 9 is connected to the top of the right side of the waste heat recovery box 1, and the inner cavity of the water adding pipe 9 is connected to a second electric valve 10, a temperature sensor 11 is fixedly installed at the center of the bottom of the inner wall of the waste heat recovery box 1, and a liquid level sensor 12 is fixedly installed at the top and bottom of the left side of the inner wall of the waste heat recovery box 1.

[0021] Through the above technical scheme, by setting up the flue gas purification component 5, the flue gas can be filtered for impurities, the flue gas emission can be prevented from causing air pollution, and the environmental protection effect can be improved. By setting up the displacement stirring component 6, the water and hot air can be fully stirred, the waste heat can be fully recovered, and the waste heat recovery efficiency can be improved. Embodiment 2:

[0022] Based on the first embodiment, the present invention is as follows Figure 1-Figure 5 As shown, the flue gas purification component 5 is disclosed to include a purification box 51, the right side of the purification box 51 is fixedly connected to the top of the left side of the waste heat recovery box 1, the top of the purification box 51 is connected to a flue gas inlet pipe 52, the inner cavity of the purification box 51 is provided with a flue gas filter purification net 53, the left end of the flue gas filter purification net 53 passes through the left side of the purification box 51 and is fixedly connected to a pull plate 54, the left side of the pull plate 54 is fixedly connected to a handle 55, the bottom of the purification box 51 is connected to an exhaust pipe 56, and the end of the exhaust pipe 56 away from the purification box 51 is connected to the bottom of the left side of the waste heat recovery box 1.

[0023] Through the above technical solution, a support plate 57 is fixedly connected to the bottom of the right side of the inner wall of the purification box 51, and the top of the support plate 57 is in contact with the bottom of the flue gas filter purification net 53. The top and bottom of the left side of the inner wall of the purification box 51 are bonded and connected with a sealing gasket 58, and the inner side of the sealing gasket 58 is in contact with the surface of the flue gas filter purification net 53. By providing the support plate 57, the flue gas filter purification net 53 is supported, and the stability of the flue gas filter purification net 53 during use is increased. By providing the sealing gasket 58, the gap between the purification box 51 and the flue gas filter purification net 53 is sealed. Embodiment three:

[0024] The present invention Figure 1-Figure 5 As shown, the displacement stirring assembly 6 includes a shell 61, the bottom of the shell 61 is fixedly connected to the top of the waste heat recovery box 1, a sliding groove 62 is opened at the center of the top of the inner wall of the waste heat recovery box 1, an electric telescopic rod 63 is fixedly connected to the right side of the inner wall of the shell 61, a movable plate 64 is fixedly connected to the left end of the electric telescopic rod 63, a displacement mounting plate 65 is fixedly connected to the left side of the movable plate 64, a motor 66 is fixedly connected to the bottom of the displacement mounting plate 65, a rotating rod 67 is fixedly connected to the output end of the motor 66, the surface of the rotating rod 67 is slidably connected to the inner cavity of the sliding groove 62, the bottom end of the rotating rod 67 penetrates into the inner cavity of the waste heat recovery box 1, and a stirring blade 68 is fixedly connected to the surface of the rotating rod 67.

[0025] Through the above technical solution, the top of the movable plate 64 is fixedly connected with a guide sleeve 69, the inner cavity of the guide sleeve 69 is slidably connected with a guide rod 610, the outer end of the guide rod 610 is fixedly connected to the inner wall of the shell 61, the length and width of the inner cavity of the sliding groove 62 are greater than the diameter of the rotating rod 67, the height of the inner cavity of the sliding groove 62 is less than the height of the sliding groove 62, the input ends of the electric telescopic rod 63 and the motor 66 are both unidirectionally electrically connected to the output end of the processor 4, the input ends of the first electric valve 8 and the second electric valve 10 are both unidirectionally electrically connected to the output end of the processor 4, and the temperature controller 3. The output ends of the temperature sensor 11 and the liquid level sensor 12 are unidirectionally electrically connected to the input end of the processor 4. By setting the guide sleeve 69 and the guide rod 610, the movable plate 64 is stabilized during movement, and the stability of the movable plate 64 during movement is increased. By setting the sliding groove 62, the rotating rod 67 is convenient for rotation and left and right movement. By setting the temperature controller 3, the processor 4, the temperature sensor 11 and the liquid level sensor 12, the start and stop of the electric telescopic rod 63, the motor 66, the first electric valve 8 and the second electric valve 10 are controlled.

[0026] The working principle of the present invention is as follows: first, the high-temperature flue gas generated by the industrial furnace enters the inner cavity of the purification box 51 through the flue gas inlet pipe 52, and the impurities in the flue gas are filtered through the flue gas filter purification net 53. The filtered high-temperature gas enters the inner cavity of the waste heat recovery box 1 through the outlet pipe 56, and heats the inner cavity water of the waste heat recovery box 1 to achieve the purpose of waste heat recovery. Then, the temperature sensor 11 senses the heat and sends an instruction to the processor 4. After processing, the processor 4 starts the electric telescopic rod 63 and the motor 66. The motor 66 starts to drive the rotating rod 67 and the stirring blade 68 to rotate to stir and mix the water and the high-temperature gas in the inner cavity of the waste heat recovery box 1, so that the high-temperature gas can fully heat the water. The electric telescopic rod 63 starts to push the moving plate 64 to move. The moving plate 64 moves to drive the guide sleeve 69 to slide on the surface of the guide rod 610. The moving plate 64 moves to drive the displacement mounting plate 65 and the motor 66 to move. The motor 66 moves to drive the rotating rod 67 to rotate and move in the inner cavity of the sliding groove 62. The rotating rod 67 rotates The movement drives the stirring blade 68 to rotate and fully stir and mix the water and the high-temperature gas, which can fully recover the waste heat and improve the waste heat recovery efficiency, thereby achieving the advantages of improving the waste heat recovery efficiency and filtering the flue gas. When water needs to be changed, the temperature value of water heating can be set by the thermostat 3 and sent to the processor 4. The temperature sensor 11 senses the water temperature in real time and sends it to the processor 4 for comparison. When the set temperature value is reached, the processor 4 starts the first electric valve 8 to open the water outlet pipe 7, so that the water is discharged and collected through the water outlet pipe 7, and then closes the first electric valve 8. At the same time, when the lower liquid level sensor 12 senses the water level line, the liquid level sensor 12 sends an instruction to the processor 4, and the processor 4 starts the second electric valve 10 to open the water adding pipe 9. Water is added to the inner cavity of the waste heat recovery box 1 through the water adding pipe 9. When the upper liquid level sensor 12 senses the water level line, the liquid level sensor 12 sends an instruction to the processor 4 to close the second electric valve 10. Water can be automatically changed, thereby improving work efficiency.

[0027] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0028] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A heat exchange system for recovering waste heat from an industrial furnace, comprising a waste heat recovery box (1), characterized in that: The four corners of the bottom of the waste heat recovery box (1) are fixedly connected to support legs (2); the bottom of the front of the waste heat recovery box (1) is fixedly installed with a temperature controller (3); the top of the front of the waste heat recovery box (1) is fixedly installed with a processor (4); the left side of the waste heat recovery box (1) is provided with a flue gas purification component (5); the top of the waste heat recovery box (1) is provided with a displacement stirring component (6); the bottom of the right side of the waste heat recovery box (1) is connected to a water outlet pipe (7); the inner cavity of the water outlet pipe (7) is connected to a first electric valve (8); the top of the right side of the waste heat recovery box (1) is connected to a water supply pipe (9); the inner cavity of the water supply pipe (9) is connected to a second electric valve (10); a temperature sensor (11) is fixedly installed at the center of the bottom of the inner wall of the waste heat recovery box (1); and liquid level sensors (12) are fixedly installed at the top and bottom of the left side of the inner wall of the waste heat recovery box (1).

2. The heat exchange system for recovering waste heat from an industrial furnace according to claim 1, characterized in that: The flue gas purification assembly (5) comprises a purification box (51), the right side of the purification box (51) is fixedly connected to the top of the left side of the waste heat recovery box (1), the top of the purification box (51) is connected to a flue gas inlet pipe (52), the inner cavity of the purification box (51) is provided with a flue gas filter purification net (53), the left end of the flue gas filter purification net (53) passes through the left side of the purification box (51) and is fixedly connected to a pull plate (54), the left side of the pull plate (54) is fixedly connected to a handle (55), the bottom of the purification box (51) is connected to an air outlet pipe (56), and the end of the air outlet pipe (56) away from the purification box (51) is connected to the bottom of the left side of the waste heat recovery box (1).

3. A heat exchange system for recovering waste heat from an industrial furnace according to claim 2, characterized in that: A support plate (57) is fixedly connected to the bottom of the right side of the inner wall of the purification box (51), and the top of the support plate (57) is in contact with the bottom of the smoke filter purification net (53).

4. The heat exchange system for recovering waste heat from an industrial furnace according to claim 2, characterized in that: The top and bottom of the left side of the inner wall of the purification box (51) are both bonded and connected with a sealing gasket (58), and the inner side of the sealing gasket (58) is in contact with the surface of the smoke filter purification net (53).

5. The heat exchange system for recovering waste heat from an industrial furnace according to claim 1, characterized in that: The displacement stirring assembly (6) comprises a shell (61), the bottom of the shell (61) is fixedly connected to the top of the waste heat recovery box (1), a sliding groove (62) is provided at the center of the top of the inner wall of the waste heat recovery box (1), an electric telescopic rod (63) is fixedly connected to the right side of the inner wall of the shell (61), a movable plate (64) is fixedly connected to the left end of the electric telescopic rod (63), a displacement mounting plate (65) is fixedly connected to the left side of the movable plate (64), a motor (66) is fixedly connected to the bottom of the displacement mounting plate (65), a rotating rod (67) is fixedly connected to the output end of the motor (66), a surface of the rotating rod (67) is slidably connected to the inner cavity of the sliding groove (62), the bottom end of the rotating rod (67) penetrates into the inner cavity of the waste heat recovery box (1), and a stirring blade (68) is fixedly connected to the surface of the rotating rod (67).

6. The heat exchange system for recovering waste heat from an industrial furnace according to claim 5, characterized in that: A guide sleeve (69) is fixedly connected to the top of the movable plate (64), a guide rod (610) is slidably connected to the inner cavity of the guide sleeve (69), and an outer end of the guide rod (610) is fixedly connected to the inner wall of the housing (61).

7. The heat exchange system for recovering waste heat from an industrial furnace according to claim 5, characterized in that: The length and width of the inner cavity of the sliding groove (62) are both greater than the diameter of the rotating rod (67), and the height of the inner cavity of the sliding groove (62) is less than the height of the sliding groove (62).

8. The heat exchange system for recovering waste heat from an industrial furnace according to claim 5, characterized in that: The input ends of the electric telescopic rod (63) and the motor (66) are both unidirectionally electrically connected to the output end of the processor (4); the input ends of the first electric valve (8) and the second electric valve (10) are both unidirectionally electrically connected to the output end of the processor (4); and the output ends of the temperature controller (3), the temperature sensor (11) and the liquid level sensor (12) are unidirectionally electrically connected to the input end of the processor (4).

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