Boiler waste heat recovery device

Abstract

The utility model discloses a boiler waste heat recovery device which comprises a working table, supporting frames are arranged at the four corners of the bottom of the working table, a recovery box is arranged on one side of the top of the working table, a filter plate is arranged in the middle of the recovery box in a lifting mode, and guide assemblies used for guiding lifting of the filter plate are symmetrically arranged on the side wall of the recovery box. A driving assembly for driving the filter plate to ascend and descend is arranged on the side edge of the recycling box, a material receiving box is arranged at the position, in butt joint with a bottom opening of the filter plate, of one side of the recycling box, a water tower is arranged on the side, located on the recycling box, of the workbench, and a preheating cavity and a heating cavity are formed in the middle of the water tower. A heat conduction assembly penetrating through the preheating cavity and the heating cavity is arranged in the middle of the water tower.

Description

Technical Field

[0001] This utility model relates to the field of boiler-related technology, and in particular to a boiler waste heat recovery device. Background Technology

[0002] A boiler is an energy conversion device. The energy input to a boiler includes the chemical energy of fuel and electrical energy. The boiler outputs steam, high-temperature water, or organic heat carriers with a certain amount of thermal energy. The hot water or steam produced in the boiler can directly provide the heat energy required for industrial production and people's lives. It can also be converted into mechanical energy through a steam power device, or the mechanical energy can be converted into electrical energy through a generator. When existing equipment recovers and utilizes the waste heat of the boiler, there are often unburned fuels and impurities in the flue gas. Direct heat exchange through the recovery device can easily cause pipe blockage, thereby affecting the efficiency of waste heat recovery. Utility Model Content

[0003] The purpose of this utility model is to provide a boiler waste heat recovery device to solve the problems mentioned in the background art, such as the inconvenience of existing equipment in recovering unburned fuel and impurities in flue gas and low heat exchange efficiency.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a boiler waste heat recovery device, including a workbench, support frames at the four corners of the bottom of the workbench, a recovery box on one side of the top of the workbench, a filter plate that is raised and lowered in the middle of the recovery box, guide components for raising and lowering the filter plate that are symmetrically arranged on the side wall of the recovery box, a drive component for raising and lowering the filter plate that is arranged on the side of the recovery box, a receiving box that is connected to the bottom opening of the filter plate on one side of the recovery box, a water tower located on one side of the workbench near the recovery box, a preheating chamber and a heating chamber in the middle of the water tower, and a heat-conducting component that runs through the preheating chamber and the heating chamber in the middle of the water tower.

[0005] Preferably, the recycling bin is tower-shaped, with a boiler exhaust gas connection head at the top and a guide pipe at the bottom of the side wall of the recycling bin.

[0006] Preferably, the guiding assembly includes guide grooves symmetrically opened on the side wall of the recycling bin, and the bottom wall of the guide groove is fixedly connected to the filter plate by a return spring.

[0007] Preferably, the drive assembly includes a drive shaft rotatably mounted on one side of the recycling bin, a cam on the outer circular wall of the drive shaft that fits against the filter plate, and a motor with an output shaft fixedly connected to the drive shaft on the side wall of the recycling bin.

[0008] Preferably, the preheating chamber is located outside the heating chamber.

[0009] Preferably, the heat-conducting assembly includes a flow guide ring one and a flow guide ring two respectively provided at the bottom of the preheating chamber and the heating chamber. The flow guide ring one and the flow guide ring two are connected by a plurality of heat-conducting pipes arranged in a ring. A flow guide connector one is provided at the bottom of the water tower connected to the flow guide ring one, and a flow guide connector two is provided at the bottom of the water tower connected to the flow guide ring two. The flow guide connector one is connected to an external exhaust gas treatment device through a pipe, and the flow guide connector two is connected to the flow guide pipe through a pipe.

[0010] Preferably, the top of the water tower is connected to the preheating chamber and has an inlet, the bottom of the water tower is connected to the heating chamber and has an outlet, the outlet is equipped with a solenoid valve, and the bottom of the water tower is equipped with several mounting brackets.

[0011] Preferably, a water pump is provided on one side of the top of the workbench, the input end of the water pump is connected to the preheating chamber through a pipe, and the output end of the water pump is connected to the heating chamber through a pipe.

[0012] The beneficial effects of this utility model are:

[0013] By guiding the boiler exhaust gas from the top of the recovery box into the recovery box, and then filtering out unburned fuel and impurities in the exhaust gas through a filter plate, the filter plate is driven by a cam to reciprocate up and down and shake, shaking the collected unburned fuel and impurities into the receiving box for easy recycling and improving the efficiency of subsequent exhaust gas waste heat recovery. The pre-filtered exhaust gas will be further guided sequentially to the second guide ring, the heat conduction pipe and the first guide ring in the water tower. The heat conduction pipe heats the water in the heating chamber, and the excess heat will preheat the water in the preheating chamber, improving the utilization rate of boiler exhaust gas waste heat. Attached Figure Description

[0014] Figure 1 This is a first-view perspective three-dimensional structural diagram of an embodiment of the present utility model;

[0015] Figure 2 This is a second-view perspective three-dimensional structural diagram of an embodiment of the present utility model;

[0016] Figure 3 This is a schematic diagram of the front cross-sectional structure of an embodiment of the present utility model;

[0017] Figure 4 This is a first-view cross-sectional perspective three-dimensional structural diagram of an embodiment of the present utility model;

[0018] Figure 5 This is a second-view cross-sectional three-dimensional structural diagram of an embodiment of the present invention.

[0019] In the diagram: 1. Workbench; 2. Support frame; 3. Recycling box; 31. Boiler exhaust gas connector; 32. Guide pipe; 4. Filter plate; 5. Guide assembly; 51. Guide groove; 52. Return spring; 6. Drive assembly; 61. Drive shaft; 62. Cam; 63. Motor; 7. Receiving box; 8. Water tower; 9. Preheating chamber; 10. Heating chamber; 11. Heat conduction assembly; 111. Guide ring one; 112. Guide ring two; 113. Heat conduction pipe; 114. Guide joint one; 115. Guide joint two; 12. Inlet; 13. Outlet; 14. Solenoid valve; 15. Mounting bracket; 16. Water pump. Detailed Implementation

[0020] 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 protection scope of the present utility model.

[0021] Please see Figures 1 to 5 This utility model provides a boiler waste heat recovery device, including a workbench 1, with support frames 2 at the four corners of the bottom of the workbench 1, a recovery box 3 on one side of the top of the workbench 1, a filter plate 4 raised and lowered in the middle of the recovery box 3, guide components 5 symmetrically provided on the side wall of the recovery box 3 for guiding the filter plate 4 to rise and fall, a drive component 6 for driving the filter plate 4 to rise and fall on the side of the recovery box 3, a receiving box 7 connected to the bottom opening of the filter plate 4 on one side of the recovery box 3, a water tower 8 located on one side of the workbench 1 next to the recovery box 3, a preheating chamber 9 and a heating chamber 10 in the middle of the water tower 8, and the water tower 8 penetrating the preheating chamber 9 and the heating chamber 10. The chamber 10 is equipped with a heat-conducting component 11. By connecting the recovery box 3 to the boiler equipment, the boiler exhaust gas is guided from the top of the recovery box 3 to the chamber 3. The exhaust gas is then filtered by the filter plate 4 to remove unburned fuel and impurities. The filter plate 4 is then driven by the drive component 6 to shake, causing the collected unburned fuel and impurities to fall into the receiving box 7 for easy recycling and to improve the efficiency of subsequent exhaust gas waste heat recovery. The pre-filtered exhaust gas is further guided to the heat-conducting component 11 in the water tower 8. The water in the heating chamber 10 is heated by the heat-conducting pipe 113 in the heat-conducting component 11, and the excess heat is used to preheat the water in the preheating chamber 9, thereby improving the utilization rate of boiler exhaust gas waste heat.

[0022] like Figure 2As shown, specifically, the recycling box 3 is tower-shaped. The top of the recycling box 3 is provided with a boiler exhaust gas connection head 31, and the bottom of the side wall of the recycling box 3 is provided with a guide pipe 32. By connecting the boiler exhaust gas connection head 31 to the external boiler equipment, the boiler exhaust gas is guided into the recycling box 3 and pre-treated. Then, the pre-treated exhaust gas is guided into the water tower 8 through the guide pipe 32.

[0023] like Figure 3 and Figure 5 As shown, specifically, the guiding component 5 includes guide grooves 51 symmetrically opened on the side wall of the recycling bin 3. The bottom wall of the guide groove 51 is fixedly connected to the filter plate 4 by a return spring 52. During the process of the filter plate 4 moving up and down along the guide groove 51, it is stretched and guided by the return spring 52, thereby causing the filter plate 4 to vibrate in the middle of the recycling bin 3, thereby shaking the unburned fuel or impurities collected on the top of the filter plate 4 into the receiving box 7, which facilitates further recycling.

[0024] like Figure 4 As shown, specifically, the drive assembly 6 includes a drive shaft 61 rotatably mounted on one side of the recycling bin 3. The outer circular wall of the drive shaft 61 is provided with a cam 62 that fits against the filter plate 4. The side wall of the recycling bin 3 is provided with a motor 63 whose output shaft is fixedly connected to the drive shaft 61. By starting the motor 63, the cam 62 is driven to rotate synchronously, thereby driving the filter plate 4 and cooperating with the return spring 52 to reciprocate up and down along the guide groove 51, thereby driving the filter plate 4 to vibrate in the middle of the recycling bin 3.

[0025] Specifically, the preheating chamber 9 is located outside the heating chamber 10. The heating chamber 10 absorbs most of the heat in the exhaust gas, and the preheating chamber 9 further absorbs a small portion of the heat in the exhaust gas, thereby improving the waste heat effect of the exhaust gas.

[0026] Specifically, the heat-conducting component 11 includes a first guide ring 111 and a second guide ring 112 respectively provided at the bottom of the preheating chamber 9 and the heating chamber 10. The first guide ring 111 and the second guide ring 112 are connected by a plurality of annularly arranged heat-conducting pipes 113. The bottom of the water tower 8 is connected to the first guide ring 111 and is provided with a first guide joint 114. The bottom of the water tower 8 is connected to the second guide ring 112 and is provided with a second guide joint 115. The first guide joint 114 is connected to an external exhaust gas treatment device through a pipe. The second guide joint 115 is connected to the guide pipe 32 through a pipe. The pre-treated exhaust gas will flow through the pipe through the second guide ring 112, the heat-conducting pipes 113 and the first guide ring 111, and then heat the water in the heating chamber 10 and preheat the water in the preheating chamber 9 through the heat-conducting pipes 113, thereby improving the utilization rate of the exhaust gas waste heat.

[0027] Specifically, the top of the water tower 8 is connected to the preheating chamber 9 and has an inlet 12, the bottom of the water tower 8 is connected to the heating chamber 10 and has an outlet 13, the outlet 13 is equipped with a solenoid valve 14, and the bottom of the water tower 8 is equipped with several mounting brackets 15. By connecting the inlet 12 to an external water replenishment device, the water in the water tower 8 can be replenished after it is used, and the waste heat of the exhaust gas can be used to heat the water added back into the water tower 8, thereby improving the utilization rate of the waste heat of the exhaust gas.

[0028] Specifically, the water in the heating chamber 10 is utilized by opening or closing the solenoid valve 14.

[0029] Specifically, a water pump 16 is provided on one side of the top of the workbench 1. The input end of the water pump 16 is connected to the preheating chamber 9 through a pipe, and the output end of the water pump 16 is connected to the heating chamber 10 through a pipe. When the water level in the heating chamber 10 is low, the water pump 16 is started to replenish the water in the preheating chamber 9 into the heating chamber 10. The waste heat of the exhaust gas is used to further heat the water added to the heating chamber 10, thereby improving the utilization rate of the waste heat of the exhaust gas.

[0030] Specifically, water level sensors can be installed in both the heating chamber 10 and the preheating chamber 9 to detect the water level in the heating chamber 10 and the preheating chamber 9 in real time.

[0031] The working principle of this utility model is as follows: In use, by connecting the recovery box 3 to the boiler equipment, the exhaust gas of the boiler is guided from the top of the recovery box 3 into the recovery box 3. Then, the unburned fuel and impurities in the exhaust gas are filtered through the filter plate 4. The filter plate 4 is driven by the cam 62 to reciprocate and shake, shaking the collected unburned fuel and impurities into the receiving box 7 for easy recycling and to improve the efficiency of subsequent recovery of exhaust gas waste heat. The initially filtered exhaust gas will be further guided sequentially into the second guide ring 112, the heat conduction pipe 113 and the first guide ring 111 in the water tower 8. The water in the heating chamber 10 is heated through the heat conduction pipe 113, and the excess heat will preheat the water in the preheating chamber 9, thereby improving the utilization rate of boiler exhaust gas waste heat.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A boiler waste heat recovery device, comprising a workbench (1), the bottom corners of which are provided with support frames (2), characterized in that; A recycling bin (3) is provided on one side of the top of the workbench (1). A filter plate (4) is raised and lowered in the middle of the recycling bin (3). A guide assembly (5) for raising and lowering the filter plate (4) is symmetrically provided on the side wall of the recycling bin (3). A drive assembly (6) for raising and lowering the filter plate (4) is provided on the side of the recycling bin (3). A receiving box (7) is provided on one side of the recycling bin (3) with the bottom opening of the filter plate (4). A water tower (8) is provided on one side of the workbench (1) located on the side of the recycling bin (3). A preheating chamber (9) and a heating chamber (10) are provided in the middle of the water tower (8). A heat conduction assembly (11) is provided in the middle of the water tower (8) through the preheating chamber (9) and the heating chamber (10).

2. A boiler heat recovery device according to claim 1, characterized in that; The recycling box (3) is tower-shaped, with a boiler exhaust gas connector (31) at the top and a guide pipe (32) at the bottom of the side wall of the recycling box (3).

3. A boiler heat recovery device according to claim 1, characterized in that; The guide assembly (5) includes guide grooves (51) symmetrically opened on the side wall of the recycling bin (3), and the bottom wall of the guide groove (51) is fixedly connected to the filter plate (4) by a reset spring (52).

4. A boiler heat recovery device according to claim 1, characterized in that; The drive assembly (6) includes a drive shaft (61) rotatably mounted on one side of the recycling bin (3), a cam (62) that fits against the filter plate (4) on the outer circular wall of the drive shaft (61), and a motor (63) whose output shaft is fixedly connected to the drive shaft (61) on the side wall of the recycling bin (3).

5. A boiler heat recovery device according to claim 1, characterized in that; The preheating chamber (9) is located outside the heating chamber (10).

6. A boiler waste heat recovery device according to claim 2, characterized in that; The heat-conducting component (11) includes a flow guide ring one (111) and a flow guide ring two (112) respectively provided at the bottom of the preheating chamber (9) and the heating chamber (10). The flow guide ring one (111) and the flow guide ring two (112) are connected by a plurality of heat-conducting pipes (113) arranged in a ring. The bottom of the water tower (8) is connected to the flow guide ring one (111) and is provided with a flow guide joint one (114). The bottom of the water tower (8) is connected to the flow guide ring two (112) and is provided with a flow guide joint two (115). The flow guide joint one (114) is connected to an external exhaust gas treatment device through a pipe. The flow guide joint two (115) is connected to the flow guide pipe (32) through a pipe.

7. A boiler waste heat recovery device according to claim 1, characterized in that; The top of the water tower (8) is connected to the preheating chamber (9) and has an inlet (12). The bottom of the water tower (8) is connected to the heating chamber (10) and has an outlet (13). The outlet (13) is equipped with a solenoid valve (14). The bottom of the water tower (8) is equipped with several mounting brackets (15).

8. A boiler waste heat recovery device according to claim 1, characterized in that; A water pump (16) is provided on one side of the top of the workbench (1). The input end of the water pump (16) is connected to the preheating chamber (9) through a pipe, and the output end of the water pump (16) is connected to the heating chamber (10) through a pipe.

Images