Boiler room waste heat recycling device
By installing heat recovery and control components in the boiler room, the reuse of flue gas heat energy is realized, solving the problem of low boiler combustion heat utilization rate and reducing the company's energy consumption costs.
Patent Information
- Application Number
- CN202423284955.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Only a portion of the heat generated by boiler combustion is effectively utilized, with the remainder being emitted into the environment as flue gas. This results in low thermal energy utilization and increases the energy consumption costs for enterprises.
A waste heat recovery and reuse device for boiler rooms is designed. By setting up a heat recovery component, the flue gas in the boiler room enters the serpentine tube and exchanges heat energy with the outside air at the guide plate in the recovery box. After the outside air is heated, it enters the return pipe through the guide plate and then flows back into the boiler room. At the same time, the flue gas discharge speed is adjusted by the control component to prolong its residence time in the serpentine tube and improve the heat energy utilization rate.
It effectively improved the utilization rate of thermal energy, reduced the energy consumption of the boiler room, and reduced energy consumption costs.
Smart Images
Figure CN223649346U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of boiler room waste heat recovery technology, and in particular relates to a boiler room waste heat recovery and reuse device. Background Technology
[0002] A boiler room waste heat recovery and reuse device is a system designed to improve energy efficiency, reduce energy consumption, and reduce environmental pollution.
[0003] In industrial production, boilers are common thermal energy equipment, but the heat generated by their combustion is often only partially utilized, with the remainder being emitted into the environment in the form of flue gas, resulting in a significant reduction in the utilization rate of thermal energy. This waste of thermal energy will seriously increase the energy consumption costs of enterprises over time. Therefore, we propose a waste heat recovery and reuse device for boiler rooms. Utility Model Content
[0004] The purpose of this invention is to provide a waste heat recovery and reuse device for boiler rooms. Specifically, the flue gas from the boiler room is discharged through the exhaust pipe and enters a serpentine tube inside the recovery box. Simultaneously, a blower draws in outside air through the intake pipe and directs it into a guide plate inside the recovery box. The outside air, upon contact with the serpentine tube, is heated by the heat energy from the flue gas, effectively utilizing the heat energy. The heated air then flows through the guide plate into the return pipe and back into the boiler room. This method effectively achieves heat energy recovery and reuse, reducing energy consumption. It solves the problem that only a portion of the heat generated by existing boiler combustion is effectively utilized, with the remainder being emitted into the environment as flue gas, resulting in a significant reduction in heat energy utilization and increased energy costs for enterprises.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model relates to a waste heat recovery and reuse device for boiler rooms, comprising a boiler room, a return pipe fixedly connected to the top of the boiler room, a flue pipe fixedly connected to the right side of the boiler room, a heat energy recovery component provided on the right side of the boiler room, the heat energy recovery component comprising a recovery box, an exhaust pipe and an air inlet pipe fixedly connected to the right side of the recovery box, the right side of the return pipe and the right side of the flue pipe being fixedly connected to the left side of the recovery box, an induced draft fan connected to the right side of the exhaust pipe, and a blower connected to the right side of the air inlet pipe;
[0007] The recycling bin contains several serpentine tubes. Square covers are fixedly connected to the left and right sides of each serpentine tube. The sides of the two square covers furthest from each other are fixedly connected to the inner wall of the recycling bin. The square cover on the left corresponds to the right side of the exhaust pipe, and the square cover on the right corresponds to the left side of the exhaust pipe. Two guide plates are fixedly connected to the outer surface of each serpentine tube. The two guide plates are inclined and their outer sides are fixedly connected to the inner wall of the recycling bin, forming a guide groove between them. The guide groove is connected to both the return pipe and the air inlet pipe. Flue gas from the boiler room enters the serpentine tubes. The blower draws outside air into the air inlet pipe and into the guide plates inside the recycling bin. When the outside air comes into contact with the serpentine tubes, it is heated by the heat energy of the flue gas inside, thus utilizing the heat energy.
[0008] Furthermore, a flow control component is installed inside the exhaust pipe, and a motor is fixedly connected to the top of the exhaust pipe. The flow control component includes a rotating plate, a fixed plate is in contact with the left side of the rotating plate, a bevel gear is fixedly connected to the bottom output end of the motor, and a bevel gear ring is fixedly connected to the right side of the rotating plate. The bevel gear meshes with the bevel gear ring. Several flow ports are opened inside both the rotating plate and the fixed plate. When the rotating plate rotates, the size of the openings of the flow ports on the rotating plate and the fixed plate can be adjusted. When the opening is reduced, the flue gas is discharged more slowly and stays in the serpentine pipe for a longer time, thereby making the thermal energy utilization rate of the flue gas more thorough. The rotation position of the rotating plate can be adjusted according to different needs.
[0009] Furthermore, the outer ring of the fixed plate is fixedly connected to the inner wall of the exhaust pipe, and the outer ring of the rotating plate is rotatably connected to the inner wall of the exhaust pipe. A conical guide block is fixedly connected to the center of the left side of the fixed plate, and a limiting shaft is fixedly connected to the center of the left side of the rotating plate. A limiting hole is opened at the center of the right side of the fixed plate, and the limiting shaft is set in the limiting hole on the fixed plate. The limiting shaft is rotatably connected to the fixed plate through the limiting hole. The conical guide block is used to guide the flue gas so that the flue gas can be smoothly discharged from the flow port. The limiting shaft rotates in the limiting hole on the fixed plate, which can limit the rotation of the rotating plate.
[0010] Furthermore, a filter assembly is provided on the outside of the exhaust pipe. The filter assembly includes a filter box fixedly connected to the exhaust pipe, a flue gas filter plate inserted inside the filter box, a cover plate fixedly connected to the top of the flue gas filter plate, and a sealing strip fixedly connected to the bottom of the cover plate. The bottom of the sealing strip contacts the top of the filter box. When the flue gas filter plate is inserted into the filter box, the sealing strip at the bottom of the cover plate contacts the bottom of the filter box, thus achieving a sealing effect.
[0011] Furthermore, the top front and back of the cover plate are both in contact with pressing frames. A fixed shaft is fixedly connected to the top of the pressing frame, and a counterweight is fixedly connected to the outside of the fixed shaft. A connecting rod is fixedly connected to the side of the two pressing frames that are close to each other. A fixed block is fixedly connected to the right side of the filter box. The bottom of the two pressing frames is hinged to the fixed block through a rotating shaft. After the flue gas filter plate is installed, pulling the connecting rod will cause the pressing frame to flip to the left, so that the pressing frame contacts the cover plate. The pressing frame, under the weight of the counterweight, presses the cover plate, so that the sealing strip is tightly attached to the top of the filter box, thereby achieving a better sealing effect.
[0012] This utility model has the following beneficial effects:
[0013] 1. This utility model incorporates a heat recovery component. Specifically, the flue gas in the boiler room is discharged from the exhaust pipe and enters the serpentine tube inside the recovery box. Simultaneously, a blower draws in outside air through the air inlet pipe and directs the air into the guide plate inside the recovery box. When the outside air comes into contact with the serpentine tube, it is heated by the heat energy of the flue gas inside the serpentine tube, thus effectively utilizing the heat energy. Subsequently, the heated air is guided by the guide plate into the return pipe and then flows back into the boiler room. This method effectively achieves the effect of heat energy recovery and reuse, reducing energy consumption.
[0014] 2. This utility model, by setting up a control component, specifically by starting a motor to drive a bevel gear to rotate, the bevel gear drives a rotating plate to rotate through a bevel gear ring, which can adjust the size of the opening between the rotating plate and the fixed plate. When the opening is reduced, the flue gas is discharged more slowly and stays in the serpentine tube for a longer time, thereby making the thermal energy utilization rate of the flue gas more thorough, significantly reducing the energy consumption of the boiler room and reducing the operating cost.
[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a front view cross-sectional structural diagram of the recycling bin of this utility model;
[0019] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the exhaust pipe of this utility model;
[0020] Figure 4 This is a schematic diagram of the left-side cross-sectional structure of the filter box of this utility model;
[0021] Figure 5 This is a schematic diagram of the right side structure of the filter box of this utility model;
[0022] Figure 6 This is a schematic diagram of the overall structure of the fixing plate of this utility model.
[0023] The attached diagram lists the components represented by each number as follows:
[0024] 1. Boiler room; 11. Return pipe; 111. Exhaust pipe; 12. Heat recovery assembly; 121. Recovery box; 122. Exhaust pipe; 221. Motor; 123. Air inlet pipe; 124. Serpentine pipe; 125. Square cover; 126. Guide plate; 13. Filter assembly; 131. Filter box; 132. Flue gas filter plate; 133. Cover plate; 134. Sealing strip; 135. Pressing frame; 351. Fixed shaft; 352. Counterweight; 353. Connecting rod; 136. Fixed block; 14. Quantity control assembly; 141. Rotating plate; 142. Fixed plate; 421. Flow port; 422. Conical guide block; 143. Bevel gear; 144. Bevel gear ring; 145. Limiting shaft. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0026] Please see Figure 1-6 As shown, this utility model is a waste heat recovery and reuse device for boiler rooms, including a boiler room 1. A return pipe 11 is fixedly connected to the top of the boiler room 1, and a flue pipe 111 is fixedly connected to the right side of the boiler room 1. A heat recovery component 12 is provided on the right side of the boiler room 1. The heat recovery component 12 includes a recovery box 121. An exhaust pipe 122 and an air inlet pipe 123 are fixedly connected to the right side of the recovery box 121. The right side of the return pipe 11 and the right side of the flue pipe 111 are fixedly connected to the left side of the recovery box 121. An induced draft fan is connected to the right side of the exhaust pipe 122, and a blower is connected to the right side of the air inlet pipe 123.
[0027] The recycling bin 121 contains several serpentine tubes 124. Square covers 125 are fixedly connected to the left and right sides of each serpentine tube 124. The sides of the two square covers 125 that are furthest from each other are fixedly connected to the inner wall of the recycling bin 121. The square cover 125 on the left corresponds to the right side of the exhaust pipe 111, and the square cover 125 on the right corresponds to the left side of the exhaust pipe 122. Two guide plates 126 are fixedly connected to the outer surface of each serpentine tube 124. The two guide plates 126 are inclined, and their outer sides are fixedly connected to the inner wall of the recycling bin 121. A guide channel is formed between the two guide plates 126, and the guide channel connects to the return pipe 11 and the inlet pipe 122 respectively. The ducts 123 are interconnected. By setting up a heat recovery component 12, the flue gas in the boiler room 1 is discharged from the exhaust pipe 111 and enters the serpentine pipe 124 in the recovery box 121. At the same time, the blower will draw outside air into the air inlet pipe 123 and make the air enter the guide plate 126 in the recovery box 121. When the outside air comes into contact with the serpentine pipe 124, it will be heated by the heat energy of the flue gas in the serpentine pipe 124, thus effectively utilizing the heat energy. Then, the heated air enters the return pipe 11 through the guide plate 126 and flows back into the boiler room 1. This method effectively achieves the effect of heat energy recovery and reuse, reducing energy consumption.
[0028] A flow control component 14 is installed inside the exhaust pipe 122. A motor 221 is fixedly connected to the top of the exhaust pipe 122. The flow control component 14 includes a rotating plate 141. A fixed plate 142 is in contact with the left side of the rotating plate 141. A bevel gear 143 is fixedly connected to the bottom output end of the motor 221. A bevel gear ring 144 is fixedly connected to the right side of the rotating plate 141. The bevel gear 143 and the bevel gear ring 144 are meshed. Several flow ports 421 are opened inside both the rotating plate 141 and the fixed plate 142. By setting the flow control component 14, specifically by starting the motor 221 to drive the bevel gear 143 to rotate, the bevel gear 143 drives the rotating plate 141 to rotate through the bevel gear ring 144. This can adjust the size of the openings 421 on the rotating plate 141 and the fixed plate 142. When the opening is smaller, the flue gas is discharged more slowly and stays in the serpentine pipe 124 for a longer time, thereby making the thermal energy utilization rate of the flue gas more thorough, significantly reducing the energy consumption of the boiler room 1 and reducing the operating cost.
[0029] The outer ring of the fixed plate 142 is fixedly connected to the inner wall of the exhaust pipe 122, and the outer ring of the rotating plate 141 is rotatably connected to the inner wall of the exhaust pipe 122. A conical guide block 422 is fixedly connected to the center of the left side of the fixed plate 142, and a limiting shaft 145 is fixedly connected to the center of the left side of the rotating plate 141. A limiting hole is opened at the center of the right side of the fixed plate 142, and the limiting shaft 145 is set in the limiting hole on the fixed plate 142. The limiting shaft 145 is rotatably connected to the fixed plate 142 through the limiting hole.
[0030] A filter assembly 13 is provided on the outside of the exhaust pipe 111. The filter assembly 13 includes a filter box 131 fixedly connected to the exhaust pipe 111. A flue gas filter plate 132 is inserted inside the filter box 131. A cover plate 133 is fixedly connected to the top of the flue gas filter plate 132. A sealing strip 134 is fixedly connected to the bottom of the cover plate 133. The bottom of the sealing strip 134 contacts the top of the filter box 131.
[0031] The top front and back of the cover plate 133 are in contact with pressing brackets 135. The top of the pressing brackets 135 is fixedly connected to a fixed shaft 351. A counterweight 352 is fixedly connected to the outside of the fixed shaft 351. A connecting rod 353 is fixedly connected to the side of the two pressing brackets 135 that are close to each other. A fixed block 136 is fixedly connected to the right side of the filter box 131. The bottom of the two pressing brackets 135 is hinged to the fixed block 136 through a pivot.
[0032] One specific application of this embodiment is:
[0033] In use, the exhaust pipe 122 is connected to the induced draft fan, and the inlet pipe 123 is connected to the blower. The flue gas generated in boiler room 1 will be drawn into the exhaust pipe 111 by the induced draft fan through the exhaust pipe 122 and the serpentine pipe 124. When the flue gas passes through the filter box 131, the internal flue gas filter plate 132 filters out dust particles and harmful gases in the flue gas. The filtered flue gas then enters the serpentine pipe 124 in the recovery box 121. At the same time, the blower will draw outside air into the inlet pipe 123 and guide the air into the guide plate 126 in the recovery box 121. When the outside air comes into contact with the serpentine pipe 124, it will be heated by the heat energy of the flue gas in the serpentine pipe 124, thus effectively utilizing the heat energy. Subsequently, the heated air enters the return flow through the guide plate 126. Pipe 11, then flows back into boiler room 1. This method effectively achieves the effect of heat energy recovery and reuse. At the same time, while utilizing heat, the motor 221 is started to drive the bevel gear 143 to rotate. The bevel gear 143 drives the rotating plate 141 to rotate through the bevel gear ring 144. The rotating plate 141 rotates at the center of the fixed plate 142 through the limiting shaft 145. By rotating the rotating plate 141, the size of the opening 421 on the rotating plate 141 and the fixed plate 142 can be adjusted. When the opening is reduced, the flue gas is discharged more slowly and stays in the serpentine pipe 124 for a longer time, thus making the heat energy utilization rate of the flue gas more thorough and significantly reducing the energy consumption of boiler room 1. The opening size can be adjusted according to different needs. After the heat energy utilization of the flue gas is completed, the filtered flue gas is discharged into the environment.
[0034] When the flue gas filter plate 132 needs to be replaced, pull the connecting rod 353 to rotate the two pressing brackets 135 to the right. The bottom right side of the pressing bracket 135 rotates on the fixing block 136. At this time, the cover plate 133 is not pressed. Then pull the cover plate 133 upward to remove it, and the flue gas filter plate 132 can be disassembled. Then insert the new flue gas filter plate 132 into the filter box 131. The sealing strip 134 at the bottom of the cover plate 133 contacts the bottom of the filter box 131, which plays a sealing role. Then pull the connecting rod 353 to rotate the pressing bracket 135 to the left, so that the pressing bracket 135 contacts the cover plate 133. The pressing bracket 135, under the weight of the counterweight block 352, presses the cover plate 133, so that the sealing strip 134 is tightly attached to the top of the filter box 131, thereby achieving a better sealing effect and preventing flue gas leakage.
[0035] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A waste heat recovery and reuse device for a boiler room, comprising a boiler room (1), wherein a return pipe (11) is fixedly connected to the top of the boiler room (1), a flue pipe (111) is fixedly connected to the right side of the boiler room (1), and a heat recovery component (12) is provided on the right side of the boiler room (1), characterized in that: The heat recovery assembly (12) includes a recovery box (121). An exhaust pipe (122) and an air inlet pipe (123) are fixedly connected to the right side of the recovery box (121). The right side of the return pipe (11) and the right side of the smoke exhaust pipe (111) are fixedly connected to the left side of the recovery box (121). An induced draft fan is connected to the right side of the exhaust pipe (122), and a blower is connected to the right side of the air inlet pipe (123). The recycling bin (121) is equipped with several serpentine tubes (124). Square covers (125) are fixedly connected to the left and right sides of each serpentine tube (124). The sides of the two square covers (125) that are far apart from each other are fixedly connected to the inner wall of the recycling bin (121). The square cover (125) on the left corresponds to the right side of the exhaust pipe (111), and the square cover (125) on the right corresponds to the left side of the exhaust pipe (122). Two guide plates (126) are fixedly connected to the outer surface of the serpentine tubes (124). The two guide plates (126) are inclined. The outer side of the guide plates (126) is fixedly connected to the inner wall of the recycling bin (121). A guide groove is formed between the two guide plates (126). The guide groove is connected to the return pipe (11) and the air inlet pipe (123) respectively.
2. The boiler room waste heat recovery and reuse device according to claim 1, characterized in that, The exhaust pipe (122) is equipped with a flow control component (14). A motor (221) is fixedly connected to the top of the exhaust pipe (122). The flow control component (14) includes a rotating plate (141). A fixed plate (142) is in contact with the left side of the rotating plate (141). A bevel gear (143) is fixedly connected to the bottom output end of the motor (221). A bevel gear ring (144) is fixedly connected to the right side of the rotating plate (141). The bevel gear (143) meshes with the bevel gear ring (144). Several flow ports (421) are opened inside both the rotating plate (141) and the fixed plate (142).
3. The boiler room waste heat recovery and reuse device according to claim 2, characterized in that, The outer ring of the fixed plate (142) is fixedly connected to the inner wall of the exhaust pipe (122), the outer ring of the rotating plate (141) is rotatably connected to the inner wall of the exhaust pipe (122), and a conical guide block (422) is fixedly connected to the center of the left side of the fixed plate (142).
4. The boiler room waste heat recovery and reuse device according to claim 3, characterized in that, A limiting shaft (145) is fixedly connected to the center of the left side of the rotating plate (141), and a limiting circular hole is opened at the center of the right side of the fixed plate (142). The limiting shaft (145) is set in the limiting circular hole on the fixed plate (142), and the limiting shaft (145) is rotatably connected to the fixed plate (142) through the limiting circular hole.
5. A boiler room waste heat recovery and reuse device according to claim 4, characterized in that, A filter assembly (13) is provided on the outside of the exhaust pipe (111). The filter assembly (13) includes a filter box (131) fixedly connected to the exhaust pipe (111). A flue gas filter plate (132) is inserted inside the filter box (131). A cover plate (133) is fixedly connected to the top of the flue gas filter plate (132). A sealing strip (134) is fixedly connected to the bottom of the cover plate (133). The bottom of the sealing strip (134) contacts the top of the filter box (131).
6. A boiler room waste heat recovery and reuse device according to claim 5, characterized in that, The top front and back of the cover plate (133) are in contact with pressing brackets (135). A fixed shaft (351) is fixedly connected to the top of the pressing bracket (135). A counterweight (352) is fixedly connected to the outside of the fixed shaft (351). A connecting rod (353) is fixedly connected to the side of the two pressing brackets (135) that are close to each other.
7. A boiler room waste heat recovery and reuse device according to claim 6, characterized in that, A fixing block (136) is fixedly connected to the right side of the filter box (131), and the bottoms of the two pressing brackets (135) are hinged to the fixing block (136) through a rotating shaft.