Energy-saving air exchange device for heat recycling

Abstract

The utility model discloses an energy -conserving heat reutilization's air exchange device belongs to heat reutilization technical field, including heat exchange box, connect in the multiple baffle of heat exchange box in and the flue gas pipe of synchronous wear and tear heat exchange box and baffle, the heat exchange cavity is formed in heat exchange box inside, and the heat exchange flow channel is formed through multiple baffle in heat exchange cavity, the output kiln waste heat gas is transported through multiple flue gas pipes, and multiple flue gas pipes are located in the closed heat exchange cavity, and the closed heat exchange cavity realizes the increase of internal temperature under the action of flue gas pipe, and the low temperature gas is transported to heat exchange cavity, and low temperature gas is directly contacted with high temperature flue gas pipe simultaneously, can realize heat exchange, and the gas after heat exchange can output and supply such as slurry pipe, spray tower heating air or other production and life equipment, realizes the reutilization of heat.

Description

Technical Field

[0001] This utility model belongs to the field of heat recycling technology, specifically relating to an energy-saving heat recycling air exchanger. Background Technology

[0002] Industrial kilns (such as ceramic, metallurgical, and glass kilns) emit exhaust gases at temperatures as high as 200℃-1500℃, resulting in energy waste and environmental pollution when directly emitted. Traditional heat exchangers have the following shortcomings: The path of low-temperature gas in heat exchange equipment is limited, resulting in low heat exchange efficiency between high-temperature exhaust gas and low-temperature gas. The heat exchange structure is complex and difficult to adapt to extreme temperatures; The heat exchange temperature is limited and cannot be adjusted according to different temperature requirements. Utility Model Content

[0003] In order to solve the above-mentioned problems in the existing technology, the purpose of this utility model is to provide an energy-saving air exchanger that reuses heat.

[0004] The technical solution adopted by this utility model is as follows: it includes a heat exchange box, multiple partitions connected inside the heat exchange box, and a flue gas pipe that is simultaneously installed through the heat exchange box and the partitions. A heat exchange cavity is formed inside the heat exchange box, and a heat exchange flow channel is formed inside the heat exchange cavity through the multiple partitions. A low-temperature gas inlet and a low-temperature gas outlet are formed on the heat exchange box, which are respectively connected to the two ends of the heat exchange flow channel. An adjusting plate is movably connected inside the heat exchange box, and the adjusting plate is used to block part of the flue gas pipe.

[0005] As a preferred embodiment of this utility model, the heat exchange box has a waste heat inlet hopper and a waste heat outlet hopper at both ends, and the waste heat inlet hopper and the waste heat outlet hopper are respectively provided with a waste heat flue gas inlet and a waste heat flue gas outlet that are connected to the flue gas pipe.

[0006] As a preferred embodiment of the present invention, the heat exchange cavity includes an upper cavity and a lower cavity of equal volume, and multiple partitions are alternately distributed along the upper cavity and the lower cavity.

[0007] As a preferred embodiment of this utility model, the adjustment plate is provided with a plurality of through holes, and the projection of part of the flue gas pipe on the adjustment plate coincides with the outline of the plurality of through holes.

[0008] As a preferred embodiment of this utility model, one end of the adjusting plate is attached to one end of the heat exchange box, and sliders are fixedly provided on both sides of the adjusting plate. The inner wall of the heat exchange box is provided with a sliding groove that is adapted to the sliding of the slider.

[0009] As a preferred embodiment of this utility model, the heat exchange box has an adjustment hole on the top, a slide rod is inserted through the adjustment hole, one end of the slide rod is fixedly connected to the adjustment plate, and the other end has a thread for connecting a bolt. An abutment sleeve is provided between the bolt and the heat exchange box, and the two ends of the abutment sleeve abut against the bolt and the top of the heat exchange box, respectively.

[0010] As a preferred embodiment of this invention, the slide rod is interference-fitted with the top of the heat exchange box, and a sealing ring is provided inside the adjustment hole.

[0011] As a preferred embodiment of this invention, the air inlet hopper and the heat exchange box are detachably connected.

[0012] The beneficial effects of this utility model are as follows: This utility model, as an energy-saving heat recycling air exchanger, transports waste heat from the kiln through multiple flue gas pipes located within a sealed heat exchange chamber. The sealed chamber experiences an internal temperature increase due to the flue gas pipes. Low-temperature gas is then introduced into the heat exchange chamber, directly contacting the high-temperature flue gas pipes for heat exchange. The resulting gas can be supplied to equipment such as mud pipes, spray towers, or other production and living facilities, achieving heat recycling. Multiple alternating baffles create a wave-shaped heat exchange channel within the heat exchange chamber for transporting the low-temperature gas. This wave-shaped channel extends the flow path of the low-temperature gas within the chamber, improving heat exchange efficiency. A height-adjustable plate on one side of the heat exchange box can block the inlet of the flue gas pipes distributed in the upper chamber, preventing heat generation during low-temperature gas heat exchange and reducing the temperature of the gas after heat exchange to meet the different temperature requirements of various equipment. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a front sectional view of the structure of this utility model; Figure 3 This is a schematic diagram of the structure of the adjustment plate of this utility model; Figure 4 This is a utility model Figure 2 A magnified structural diagram at point A in the diagram.

[0015] In the diagram: 1 Heat exchange box, 11 Heat exchange cavity, 111 Upper cavity, 112 Lower cavity, 12 Heat exchange flow channel, 13 Waste heat inlet hopper, 131 Waste heat flue gas inlet, 14 Waste heat outlet hopper, 141 Waste heat flue gas outlet, 15 Low temperature gas inlet, 16 Low temperature gas outlet, 17 Adjustment hole; 2. Partition; 3. Flue pipe; 4 Adjusting plate, 41 Slider, 42 Slide rod, 43 Bolt, 44 Abutment sleeve, 45 Through hole. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] The following is combined Figure 1-4This invention describes a specific embodiment of an energy-saving heat recovery ventilation system, comprising a heat exchange box 1, multiple partitions 2 connected within the heat exchange box 1, and flue gas pipes 3 synchronously passing through the heat exchange box 1 and the partitions 2. A heat exchange cavity 11 is formed inside the heat exchange box 1, and heat exchange channels 12 are formed within the heat exchange cavity 11 through the multiple partitions 2. The waste heat output from the kiln reaches temperatures as high as 200℃-1500℃ or higher, and is transported through the multiple flue gas pipes 3 distributed within the heat exchange box 1. The temperature of the heat exchange cavity 11 increases during the transport of waste heat through the flue gas pipes 3. The heat exchange box 1 has low-temperature gas inlets 1 respectively connected to both ends of the heat exchange channels 12. 5 and low-temperature gas outlet 16, by introducing low-temperature gas into the heat exchange chamber 11, on the one hand, the waste heat is cooled down, and on the other hand, the low-temperature gas is heated by heat exchange. The heated gas is then transported to equipment such as mud pipes, spray tower heating air or other production and living equipment to achieve heat reuse. The heat exchange box 1 is movably connected with an adjustment plate 4. The adjustment plate 4 is used to block part of the flue gas pipe 3. The adjustment plate 4 is used to block part of the flue gas pipe 3, which can reduce the number of flue gas pipes 3 that transport waste heat gas in the heat exchange box 1. To a certain extent, it can reduce the heat exchange temperature of the waste heat of the flue gas in the heat exchange box 1 to the low-temperature gas, and avoid the temperature of the output reuse gas being too high to meet the equipment use.

[0019] Please refer to Figures 1-2 As shown, the heat exchange box 1 has a waste heat inlet hopper 13 and a waste heat outlet hopper 14 at both ends. The waste heat inlet hopper 13 and the waste heat outlet hopper 14 are respectively provided with a waste heat flue gas inlet 131 and a waste heat flue gas outlet 141 that are connected to the flue gas pipe 3. The waste heat flue gas inlet 131 is used to connect to the waste heat output of the kiln, and the waste heat flue gas outlet 141 is used to output the waste heat of the flue gas after heat exchange and cooling.

[0020] Please refer to Figure 2 As shown, the heat exchange chamber 11 includes an upper chamber 111 and a lower chamber 112 of equal volume. Multiple partitions 2 are alternately distributed along the upper chamber 111 and the lower chamber 112, so that the heat exchange channel 12 forms a wave shape, thereby increasing the contact area between the low-temperature gas and the multiple flue gas pipes 3, extending the flow path of the low-temperature gas in the heat exchange chamber 11, and effectively improving the heat exchange rate.

[0021] Please refer to Figure 3As shown, the regulating plate 4 is provided with multiple through holes 45. The projection of part of the flue gas pipe 3 on the regulating plate 4 coincides with the outline of the multiple through holes 45. In the initial position, the through holes 45 on the regulating plate 4 are concentric with part of the flue gas pipe 3. The waste heat gas of the kiln input at the waste heat flue gas inlet 131 can pass through the through holes 45 and the flue gas pipe 3 simultaneously. At this time, the waste heat of the kiln flows through both the upper cavity 111 and the lower cavity 112. When the heat exchange temperature is controlled, by moving the regulating plate 4, the regulating plate 4 blocks the air inlet end of the flue gas pipe 3 distributed in the upper cavity 111. The waste heat gas of the kiln is only transported through the flue gas pipe 3 in the lower cavity 112, so that the flue gas pipe 3 in the upper cavity 111 does not generate heat exchange, thereby reducing the heat exchange temperature of the low temperature gas.

[0022] Please refer to Figure 2-3 As shown, one end of the adjusting plate 4 is attached to one end of the heat exchange box 1, and sliders 41 are fixed on both sides of it. The inner wall of the heat exchange box 1 is provided with a sliding groove that is adapted to the sliding of the sliders 41, so that the adjusting plate 4 can slide up and down on one side of the heat exchange box 1 through the sliders 41 at both ends, for sealing the multiple flue gas pipes 3 in the upper cavity 111.

[0023] Please refer to Figures 3-4 As shown, the heat exchange box 1 has an adjustment hole 17 on its top. A slide rod 42 passes through the adjustment hole 17. One end of the slide rod 42 is fixedly connected to the adjustment plate 4, and the other end has a thread for connecting a bolt 43. An abutment sleeve 44 is provided between the bolt 43 and the heat exchange box 1. The two ends of the abutment sleeve 44 abut against the bolt 43 and the top of the heat exchange box 1, respectively. One end of the slide rod 42 is fixedly connected to the upper end of the adjustment plate 4, and a slide rod 42 is sleeved on the slide rod 42. The bottom of the slide rod 42 abuts against the upper surface of the heat exchange box 1, and the other end abuts against the bolt 43. When adjusting the adjustment plate 4, the bolt 43 is rotated so that its thread engages with the thread formed on the upper end of the slide rod 42. The up and down movement of the slide rod 42 can realize the height adjustment of the adjustment plate 4, thereby realizing the sealing of the air inlet end of the flue gas pipe 3 in the upper cavity 111 by the movement of the adjustment plate 4.

[0024] Please refer to Figure 3 As shown, the slide bar 42 is interference-fitted with the top of the heat exchange box 1, and a sealing ring is provided in the adjustment hole 17. After adjusting the adjustment plate 4, the sealing performance of the heat exchange box 1 inside and outside is ensured. The sealing structure is a conventional technology and will not be described in detail here.

[0025] Please refer to Figure 1 As shown, the air inlet hopper and the heat exchange box 1 are detachably connected, which allows for convenient disassembly of the waste heat air inlet hopper 13 and the heat exchange box 1, so as to facilitate the maintenance of the heat exchange box 1 and the regulating plate 4.

[0026] Working principle of this utility model: Waste heat gas from the kiln enters the waste heat inlet hopper 13 through the waste heat flue gas inlet 131. The waste heat inlet hopper 13 is connected to multiple flue gas pipes 3, which transport the waste heat gas input through the waste heat flue gas inlet 131 and finally output it through the waste heat flue gas outlet 141. During the transport process through the flue gas pipes 3, because the multiple flue gas pipes 3 are distributed in the closed heat exchange chamber 11, the temperature of the flue gas pipes 3 increases during the transport of waste heat gas, and the temperature inside the heat exchange chamber 11 rises through heat transfer. The heat exchange channel 12 is formed inside the hot cavity 11 by multiple baffles 2. The heat exchange channel 12 is used to transport low temperature gas. One end of the heat exchange channel 12 is the low temperature gas outlet 16, and the other end is the low temperature gas inlet 15 for outputting the heat-exchanged gas. After passing through the heat exchange channel 12, the low temperature gas achieves heat exchange under the action of the heat exchange channel 12, which raises its temperature. The raised gas is then transported to equipment such as mud pipes, spray tower heating air, or other production and living equipment to achieve heat reuse. The heat exchange channel 12 forms a wave-shaped structure through the baffle 2, which can extend the flow path of the low-temperature gas in the heat exchange cavity 11 to improve the heat exchange rate. When controlling the heat exchange temperature, the sliding rod 42 is slid into the adjustment hole 17 by rotating the bolt 43. Under the action of the sliding rod 42, the adjustment plate 4 is raised and lowered on one side of the heat exchange box 1. By controlling the raising and lowering of the adjustment plate 4, the flue gas pipes 3 distributed in the upper cavity 111 can be blocked, so that the kiln hot gas is only transported through the flue gas pipes 3 in the lower cavity 112. The flue gas pipes 3 in the upper cavity 111 do not directly transfer heat to the low-temperature gas, thereby reducing the heat exchange temperature of the low-temperature gas and outputting heat exchange gases of different temperatures for different equipment or production needs.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. An energy-saving air exchanger that reuses heat, characterized in that: The device includes a heat exchange box (1), multiple partitions (2) connected inside the heat exchange box (1), and a flue gas pipe (3) that passes through the heat exchange box (1) and the partitions (2) simultaneously. A heat exchange cavity (11) is formed inside the heat exchange box (1), and a heat exchange channel (12) is formed inside the heat exchange cavity (11) through the multiple partitions (2). A low-temperature gas inlet (15) and a low-temperature gas outlet (16) are formed on the heat exchange box (1) and are respectively connected to the two ends of the heat exchange channel (12). An adjustment plate (4) is movably connected inside the heat exchange box (1) and the adjustment plate (4) is used to block part of the flue gas pipe (3).

2. The energy-saving heat recovery ventilation system according to claim 1, characterized in that: The heat exchange box (1) has a waste heat inlet hopper (13) and a waste heat outlet hopper (14) at both ends. The waste heat inlet hopper (13) and the waste heat outlet hopper (14) are respectively provided with a waste heat flue gas inlet (131) and a waste heat flue gas outlet (141) that are connected to the flue gas pipe (3).

3. The energy-saving heat recovery ventilation system according to claim 2, characterized in that: The heat exchange chamber (11) includes an upper chamber (111) and a lower chamber (112) of equal volume, and multiple partitions (2) are alternately distributed along the upper chamber (111) and the lower chamber (112).

4. The energy-saving heat recovery ventilation system according to claim 1, characterized in that: The regulating plate (4) is provided with multiple through holes (45), and the projection of part of the flue gas pipe (3) on the regulating plate (4) coincides with the outline of the multiple through holes (45).

5. The energy-saving heat recovery ventilation system according to claim 4, characterized in that: One end of the adjusting plate (4) is attached to one end of the heat exchange box (1), and sliders (41) are fixed on both sides of it. The inner wall of the heat exchange box (1) is provided with a sliding groove that is adapted to the sliding of the sliders (41).

6. The energy-saving heat recovery ventilation system according to claim 2, characterized in that: The heat exchange box (1) has an adjustment hole (17) on its top. A slide rod (42) is inserted through the adjustment hole (17). One end of the slide rod (42) is fixedly connected to the adjustment plate (4), and the other end is threaded for connecting a bolt (43). An abutment sleeve (44) is provided between the bolt (43) and the heat exchange box (1). The two ends of the abutment sleeve (44) abut against the bolt (43) and the top of the heat exchange box (1), respectively.

7. The energy-saving heat recovery ventilation system according to claim 6, characterized in that: The slide bar (42) is interference-fitted with the top of the heat exchange box (1), and a sealing ring is provided in the adjustment hole (17).

8. The energy-saving heat recovery ventilation system according to claim 2, characterized in that: The air intake hopper and the heat exchange box (1) are detachably connected.

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