Multi-channel heat accumulating type boiler heat energy recovery device

Abstract

The utility model belongs to the field of multi-channel heat accumulating type boilers, particularly relates to a heat energy recovery device of a multi-channel heat accumulating type boiler, and aims to solve the problems that the internal pressure of the boiler is easy to rise and the use safety is influenced due to the fact that particulate matters exist in the existing exhausted waste gas and are easy to block a heat exchange pipeline. Comprising an air inlet pipe arranged on one side of a chimney, one end of the air inlet pipe is fixedly connected with a heat exchange pipe, and one end of the heat exchange pipe is communicated with the chimney through a pipeline. The situation of unsmooth gas outlet of the boiler is avoided, the internal pressure of the boiler is prevented from rising, the use safety is improved, meanwhile, particles can be pushed downwards along the slag discharging pipe through the spiral blade to be collected, when too many particles are collected, the bottom plate can be ejected open, then impurities are discharged, and the automation degree of equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of multi-channel thermal storage boiler technology, and in particular to a heat recovery device for a multi-channel thermal storage boiler. Background Technology

[0002] A regenerative thermal oxidizer (RTO) is a device used to treat organic waste gas. It primarily uses high-temperature oxidation to convert harmful substances in the waste gas into harmless carbon dioxide and water. Its core principle is to heat the organic waste gas to over 750 degrees Celsius, causing the VOCs in the waste gas to oxidize and decompose into carbon dioxide and water. The high-temperature gas produced by oxidation flows through a specially designed ceramic heat storage medium, causing the ceramic medium to heat up and "store" heat. This heat is used to preheat the subsequently entering organic waste gas, thus saving fuel consumption for heating the waste gas.

[0003] The exhaust gas discharged during its use contains a lot of heat. Through heat exchange, the heat can be recovered well. However, the exhaust gas contains some particulate matter, which can easily clog the heat exchange pipes, thereby increasing the internal pressure of the boiler and affecting the safety of use. Therefore, a multi-channel thermal storage boiler heat recovery device is proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies where exhaust gas contains particulate matter that can easily clog heat exchange pipes, leading to increased internal pressure in the boiler and affecting operational safety. Therefore, this invention proposes a multi-channel regenerative boiler heat recovery device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multi-channel thermal storage boiler heat recovery device includes an air inlet pipe installed on one side of the chimney, a heat exchange pipe fixedly connected to one end of the air inlet pipe, a heat exchange pipe connected to one end of the heat exchange pipe via a pipe, two baffles fixedly connected to the inner circumference of the heat exchange pipe, and multiple through-through connecting pipes for exhaust gas to pass through between the two baffles, and an outlet pipe and an inlet pipe fixedly installed at the top and bottom of the heat exchange pipe, respectively.

[0007] A through-hole compensation pipe is fixedly connected between the two partitions. Two guide rods are fixedly connected to the top of the compensation pipe near the chimney end. A counterweight block for sealing the top of the compensation pipe is slidably connected between the two guide rods.

[0008] A filter assembly is disposed inside the air intake pipe for filtering exhaust gas.

[0009] As a further embodiment of this utility model, the filter assembly includes a filter screen, which is fixedly connected to the inner circumferential wall of the air intake pipe, and the filter screen is tapered.

[0010] As a further embodiment of this utility model, a motor is fixedly connected to the top of the air intake pipe, a drive shaft is fixedly connected to one end of the motor output shaft, two fixed rods are fixedly connected to the circumference of the drive shaft, and a scraper is fixedly connected to one end of each of the two fixed rods, with the scraper in contact with the inner wall of the air intake pipe.

[0011] As a further embodiment of this utility model, a cleaning brush is fixedly connected to the bottom of the scraper located below, and the brush contacts the inner wall of the filter screen.

[0012] As a further embodiment of this utility model, a slag discharge pipe for guiding material is fixedly connected to the bottom of the filter screen. The slag discharge pipe passes through the air inlet pipe. Two fixing blocks are fixedly connected to the outer circumference of the slag discharge pipe. A sliding rod is slidably connected to the surface of each of the two fixing blocks. A base plate is fixedly connected between the bottoms of the two sliding rods. The base plate is located at the bottom of the slag discharge pipe to seal the bottom of the slag discharge pipe. A spring is fixedly connected between the top of the sliding rod and the surface of the fixing block.

[0013] As a further embodiment of this utility model, a spiral blade for pushing material is fixedly connected to the circumference of the drive shaft, and the spiral blade is located inside the slag discharge pipe.

[0014] As a further embodiment of this invention, a spiral guide vane is fixedly connected between the inner wall of the heat exchange tube and the outer wall of the compensation tube.

[0015] In this application, during use, the filtered exhaust gas enters the inlet pipe, then passes through a filter screen before entering the heat exchange tube. Simultaneously, treated soft water is injected into the heat exchange tube through the water inlet pipe. As the exhaust gas passes through the connecting pipe, it exchanges heat with the soft water, thereby reducing the exhaust gas temperature and heating the soft water. The heated soft water can be directly injected into the boiler, reducing energy loss. After prolonged use, solid particles adhere to the connecting pipe, reducing its ventilation efficiency. When the exhaust volume increases, the discharged exhaust gas pushes the counterweight upwards, causing the gas to enter the boiler. Venting is performed to prevent the boiler from experiencing poor airflow, thus preventing internal pressure buildup and improving operational safety. When the filter screen needs cleaning, the motor is started, which drives the drive shaft to rotate. The drive shaft then rotates the scraper and brush, cleaning the inner wall of the air inlet pipe and the filter screen. The cleaned particles fall into the slag discharge pipe. As the drive shaft rotates, it also drives the spiral blades to rotate, pushing the particles downwards for collection. When too many particles are collected, the bottom plate can be opened, allowing impurities to be discharged, thus improving the automation level of the equipment.

[0016] Beneficial effects: In this utility model, the multi-channel thermal storage boiler heat recovery device, by installing a compensation pipe between two partitions, allows the exhaust gas to push the counterweight upward when the heat exchange connecting pipe is blocked and the exhaust volume increases, thereby venting the exhaust gas and avoiding the occurrence of poor boiler exhaust, preventing the internal pressure of the boiler from rising, and improving the safety of use.

[0017] In this utility model, the multi-channel thermal energy recovery device for a heat storage boiler, by installing a slag discharge pipe at the bottom of the filter screen, allows the spiral blades to push particles downward along the slag discharge pipe for collection. When too many particles are collected, the bottom plate can be opened to discharge the impurities, thereby improving the automation level of the equipment.

[0018] In this invention, when the connecting pipe for heat exchange becomes blocked, the exhaust volume increases, and the discharged exhaust gas pushes the counterweight upward to exhaust the gas, thus preventing the boiler from experiencing poor gas discharge, preventing the internal pressure of the boiler from rising, and improving the safety of use. At the same time, the spiral blades can push the particulate matter downward along the slag discharge pipe for collection. When too much particulate matter is collected, the bottom plate can be opened to allow the impurities to be discharged, thus improving the automation level of the equipment. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a multi-channel thermal energy recovery device for a regenerative boiler proposed in this utility model.

[0020] Figure 2 This is a schematic diagram of the heat exchange tube structure of a multi-channel thermal energy recovery device for a regenerative boiler proposed in this utility model.

[0021] Figure 3 This is a schematic diagram of the air inlet pipe structure of a multi-channel thermal energy recovery device for a regenerative boiler proposed in this utility model.

[0022] In the diagram: 1. Inlet pipe; 2. Heat exchanger pipe; 3. Motor; 4. Baffle plate; 5. Connecting pipe; 6. Guide vane; 7. Compensating pipe; 8. Guide rod; 9. Counterweight; 10. Drive shaft; 11. Fixing rod; 12. Scraper; 13. Filter screen; 14. Brush plate; 15. Slag discharge pipe; 16. Spiral blade; 17. Base plate; 18. Fixing block; 19. Slide rod; 20. Spring; 21. Chimney. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1, referring to Figures 1-3 A heat recovery device includes: an air inlet pipe 1 disposed on one side of a chimney 21, a heat exchange pipe 2 fixedly connected to one end of the air inlet pipe 1, a heat exchange pipe 2 connected to the chimney 21 via a pipe, a flange provided at one end of the air inlet pipe 1 for connection with the pipe, two baffles 4 fixedly connected to the inner circumference of the heat exchange pipe 2, a plurality of through-through connecting pipes 5 for the passage of exhaust gas fixedly connected between the two baffles 4, an outlet pipe and an inlet pipe fixedly installed at the top and bottom of the heat exchange pipe 2 respectively, and control valves installed on both the outlet pipe and the inlet pipe. When the exhaust gas passes through the connecting pipes 5, it exchanges heat with soft water, thereby reducing the temperature of the exhaust gas and heating the soft water. The heated soft water can be directly injected into the boiler for use, reducing energy loss.

[0025] A through-hole compensation pipe 7 is fixedly connected between the two partitions 4. Two guide rods 8 are fixedly connected to the top of the compensation pipe 7 near the chimney 21. A counterweight block 9 for sealing the top of the compensation pipe 7 is slidably connected between the two guide rods 8. When the exhaust volume increases, the exhaust gas will push the counterweight block 9 upward, thereby exhausting the gas and preventing the boiler from having poor gas output, preventing the internal pressure of the boiler from rising, and improving the safety of use.

[0026] A filter assembly is installed inside the air inlet pipe 1 to filter exhaust gas.

[0027] In this utility model, the filter assembly includes a filter screen 13, which is fixedly connected to the inner circumferential wall of the air inlet pipe 1. The filter screen 13 is tapered and is used to filter solid particles in the exhaust gas.

[0028] This application can be used in the field of multi-channel thermal storage boilers, as well as in other fields applicable to this application.

[0029] Example 2, Reference Figures 1-3 Based on Example 1, an improved multi-channel thermal storage boiler heat recovery device is applied to the field of multi-channel thermal storage boilers. A motor 3 is fixedly connected to the top of the air inlet pipe 1. A drive shaft 10 is fixedly connected to one end of the output shaft of the motor 3. Two fixed rods 11 are fixedly connected to the circumference of the drive shaft 10. A scraper 12 is fixedly connected to one end of each of the two fixed rods 11. The scraper 12 contacts the inner wall of the air inlet pipe 1. A cleaning brush 14 is fixedly connected to the bottom of the lower scraper 12. The brush 14 contacts the inner wall of the filter screen 13. The motor 3 drives the drive shaft 10 to rotate, which in turn drives the scraper 12 and the brush 14 to rotate, thereby cleaning the inner wall of the air inlet pipe 1 and the filter screen 13.

[0030] In particular, a slag discharge pipe 15 for guiding material is fixedly connected to the bottom of the filter screen 13. The slag discharge pipe 15 passes through the air inlet pipe 1. Two fixing blocks 18 are fixedly connected to the outer circumference of the slag discharge pipe 15. A sliding rod 19 is slidably connected to the surface of each of the two fixing blocks 18. A base plate 17 is fixedly connected between the bottoms of the two sliding rods 19. The base plate 17 is located at the bottom of the slag discharge pipe 15 to seal the bottom of the slag discharge pipe 15. A spring 20 is fixedly connected between the top of the sliding rod 19 and the surface of the fixing block 18. A spiral blade 16 for pushing material is fixedly connected to the circumference of the drive shaft 10. The spiral blade 16 is located inside the slag discharge pipe 15. The cleaned particles fall into the slag discharge pipe 15. When the drive shaft 10 rotates, it drives the spiral blade 16 to rotate. The spiral blade 16 pushes the particles downward for collection. When too many particles are collected, the base plate 17 can be opened, thereby allowing the impurities to be discharged and improving the automation level of the equipment.

[0031] It should be noted that a spiral guide vane 6 is fixedly connected between the inner wall of the heat exchange tube 2 and the outer wall of the compensation tube 7. The guide vane 6 guides the soft water and improves the heat exchange effect.

[0032] However, as is well known to those skilled in the art, the working principle and wiring method of motor 3 are commonplace and are all conventional methods or common knowledge. They will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-channel regenerative boiler heat recovery device, comprising an air inlet pipe (1) disposed on one side of a chimney (21), characterized in that, One end of the air inlet pipe (1) is fixedly connected to a heat exchange pipe (2), and one end of the heat exchange pipe (2) is connected to the chimney (21) through a pipe. Two baffles (4) are fixedly connected to the inner circumference of the heat exchange pipe (2), and multiple through-through connecting pipes (5) for exhaust gas to pass through are fixedly connected between the two baffles (4). Water outlet pipe and water inlet pipe are fixedly installed at the top and bottom of the heat exchange pipe (2), respectively. A through-hole compensation pipe (7) is fixedly connected between the two partitions (4). Two guide rods (8) are fixedly connected to the top of the compensation pipe (7) near the chimney (21). A counterweight (9) for sealing the top of the compensation pipe (7) is slidably connected between the two guide rods (8). A filter assembly is disposed in the air inlet pipe (1) for filtering exhaust gas.

2. The multi-channel thermal energy recovery device for a thermal storage boiler according to claim 1, characterized in that, The filter assembly includes a filter screen (13), which is fixedly connected to the inner circumferential wall of the air intake pipe (1) and is tapered.

3. The multi-channel thermal storage boiler heat recovery device according to claim 2, characterized in that, A motor (3) is fixedly connected to the top of the air intake pipe (1). A drive shaft (10) is fixedly connected to one end of the output shaft of the motor (3). Two fixed rods (11) are fixedly connected to the circumference of the drive shaft (10). A scraper (12) is fixedly connected to one end of each of the two fixed rods (11). The scraper (12) contacts the inner wall of the air intake pipe (1).

4. The multi-channel thermal storage boiler heat recovery device according to claim 3, characterized in that, A cleaning brush (14) is fixedly connected to the bottom of the scraper (12) located below, and the brush (14) contacts the inner wall of the filter screen (13).

5. A multi-channel thermal storage boiler heat recovery device according to claim 2, characterized in that, The bottom of the filter screen (13) is fixedly connected to a slag discharge pipe (15) for guiding materials. The slag discharge pipe (15) passes through the air inlet pipe (1). Two fixing blocks (18) are fixedly connected to the outer circumference of the slag discharge pipe (15). The surfaces of the two fixing blocks (18) are slidably connected to a through sliding rod (19). A base plate (17) is fixedly connected between the bottoms of the two sliding rods (19). The base plate (17) is located at the bottom of the slag discharge pipe (15) and is used to seal the bottom of the slag discharge pipe (15). A spring (20) is fixedly connected between the top of the sliding rod (19) and the surface of the fixing block (18).

6. A multi-channel thermal storage boiler heat recovery device according to claim 3, characterized in that, The drive shaft (10) is circumferentially fixedly connected to a spiral blade (16) for pushing materials, and the spiral blade (16) is located inside the slag discharge pipe (15).

7. A multi-channel thermal storage boiler heat recovery device according to claim 1, characterized in that, A spiral guide vane (6) is fixedly connected between the inner wall of the heat exchange tube (2) and the outer wall of the compensation tube (7).

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