Environment-friendly boiler with waste heat recovery function

Abstract

The utility model relates to the technical field of environment-friendly boilers, and discloses an environment-friendly boiler with a waste heat recovery function, which comprises a boiler main body, a flue is mounted at the upper end of the boiler main body, a water pump is fixedly connected to the lower end of one side, close to the flue, of the boiler main body, and a water outlet of the water pump is fixedly connected with a waste heat absorption pipeline. The waste heat absorption pipeline is wound and fixed to the outer wall of the flue, a conversion assembly rotationally connected with the waste heat absorption pipeline is arranged on one side of the flue, and an ash scraping assembly is rotationally connected into the flue. According to the environment-friendly boiler with the waste heat recovery function, in the normal working process, a water pump can convey external water into a waste heat absorption pipeline, flowing water flow can drive an ash scraping assembly to move through a conversion assembly, the inner wall of a flue is scraped through the ash scraping assembly, and therefore dust in smoke is prevented from being accumulated on the inner wall of the flue, and the waste heat recovery efficiency is improved. And the waste heat absorption pipeline is difficult to recover waste heat released by the boiler main body.

Description

TECHNICAL FIELD

[0001] The utility model relates to environmental protection type boiler technical field, concretely is an environmental protection type boiler with waste heat recovery function. BACKGROUND

[0002] A boiler is a device that produces steam or hot water, usually consisting of a steel vessel that holds water and a device for burning fuel. The boiler produces heat through the combustion of fuel, which is transferred to the water, causing it to heat up and convert into steam or hot water. The produced steam can be used for heating or to power steam engines or steam turbines.

[0003] As prior art, patent authorized announcement number CN214199187U discloses a kind of energy-saving boiler with waste heat recovery function, including furnace shell, ash collecting box and waste heat recovery tank, the ash collecting box right side is fixedly connected with transmission box, the transmission box top end is communicated with heat collection pipe, the heat collection pipe penetrates waste heat recovery tank, the waste heat recovery tank is fixedly connected with transmission box, the heat collection pipe outer side is fixedly connected with heat conduction plate, the waste heat recovery tank right side top end is communicated with water outlet pipe top end, this kind of energy-saving boiler with waste heat recovery function, through the waste heat recovery tank, heat collection pipe and water outlet pipe of setting, this setting cooperates waste heat recovery tank and heat collection pipe fixed connection and waste heat recovery tank and water outlet pipe communication, can avoid that hot flue gas is directly discharged into atmosphere, avoid the waste of heat, can effectively utilize the large amount of heat on furnace wall simultaneously, improve energy utilization, better utilize heat.

[0004] Although the boiler in the above-mentioned patent can effectively utilize the large amount of heat on the furnace wall and improve the energy utilization, it still has certain defects:

[0005] When the flue gas discharged by the boiler rises in the flue, the heat contained therein will be absorbed by the waste heat recovery structure. However, as the temperature of the flue gas gradually decreases, they are extremely easy to adhere and condense on the inner wall surface of the flue. This adhesion phenomenon becomes more and more significant as the slag adhesion layer gradually thickens, which further leads to the difficulty of the waste heat recovery structure in recovering the waste heat released by the boiler. Therefore, the existing boiler needs to be improved. SUMMARY

[0006] In view of the deficiencies of the prior art, the utility model provides an environmental protection type boiler with waste heat recovery function to solve the problems raised in the background art, so that the dust in the flue is not easy to accumulate.

[0007] To achieve the above object, the utility model provides the following technical scheme: An environmental protection type boiler with waste heat recovery function, including boiler main part, the upper end of boiler main part is installed with flue, the lower end of flue one side close to boiler main part is fixed with water pump, the water outlet of water pump is fixed with waste heat absorption pipeline, and waste heat absorption pipeline is fixed around the outer wall of flue, and the side of flue is equipped with the rotation connection of conversion subassembly with waste heat absorption pipeline, and the inside rotation of flue is connected with the ash scraping subassembly.

[0008] Further, the ash scraping subassembly includes a gear ring, a limiting block, and a scraper. The upper end and the lower end of the flue are both provided with a gear ring rotationally connected thereto. The inner walls of the two gear rings are both fixed with a set of symmetrically arranged limiting blocks. The middle positions of the limiting blocks are slidingly connected with the scraper.

[0009] Further, the upper end of the scraper is provided with a gripping groove. The side of the scraper end close to the flue is trapezoidal.

[0010] Further, the conversion subassembly includes a rotating shaft, a positioning block, a driving gear, and a blade. The upper end and the lower end of the outer wall of the flue are both fixed with a positioning block. The rotating shaft is rotationally connected with the positioning block. The middle position of the rotating shaft penetrates the waste heat absorption pipeline. The two ends of the rotating shaft are both fixed with a driving gear. The driving gear is meshed with the gear ring. The outer wall of the rotating shaft is fixed with a plurality of blades. The blades are located inside the waste heat absorption pipeline.

[0011] Further, the cross section of the waste heat absorption pipeline is rectangular.

[0012] Further, the lower end of the flue is fixed with an ash discharge pipe.

[0013] Further, the lower end of the ash discharge pipe is threadedly connected with a dust collection box.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] During normal operation, the water pump will deliver external water to the waste heat absorption pipeline. The flowing water will drive the ash scraping subassembly to move through the conversion subassembly. The inner wall of the flue is scraped by the ash scraping subassembly, thereby avoiding the accumulation of dust in the flue, which makes it difficult for the waste heat absorption pipeline to recover the waste heat released by the boiler main part. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model as a whole.

[0017] Figure 2 It is a partial sectional view of the flue of the utility model.

[0018] Figure 3 It is the utility model Figure 2A magnified schematic diagram of the local structure at point A;

[0019] Figure 4 This is a schematic diagram of the structure of the gear ring of this utility model;

[0020] Figure 5 This is a schematic diagram of the scraper of this utility model.

[0021] In the diagram: 1. Boiler body; 2. Flue; 3. Ash discharge pipe; 4. Dust collection box; 5. Water pump; 6. Waste heat absorption pipe; 7. Rotary shaft; 8. Positioning block; 9. Drive gear; 10. Gear ring; 11. Limiting block; 12. Scraper; 13. Grip groove; 14. Blade. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-5 An environmentally friendly boiler with waste heat recovery function includes a boiler body 1, a flue 2 installed at the upper end of the boiler body 1, a water pump 5 fixedly connected to the lower end of the boiler body 1 near the flue 2, a waste heat absorption pipe 6 fixedly connected to the outlet of the water pump 5, the waste heat absorption pipe 6 being wound and fixed on the outer wall of the flue 2, a conversion component rotatably connected to the waste heat absorption pipe 6 on one side of the flue 2, and a scraper component rotatably connected inside the flue 2.

[0024] In this utility model, an environmentally friendly boiler with waste heat recovery function operates by pumping water 5 to deliver external water to the waste heat absorption pipe 6 during normal operation. The flowing water then drives the scraping component through a conversion assembly, which scrapes the inner wall of the flue 2, thus preventing dust in the flue gas from accumulating on the inner wall of the flue 2 and making it difficult for the waste heat absorption pipe 6 to recover the waste heat released from the boiler body 1 and flue 2. Furthermore, the structure of the boiler body 1 and flue 2 in this utility model is similar to that of an energy-saving boiler with waste heat recovery function disclosed in the prior art patent with patent authorization announcement number CN214199187U, so it will not be elaborated further here.

[0025] like Figure 2 , Figure 4 and Figure 5 As shown, the ash scraping assembly includes a gear ring 10, a limiting block 11, and a scraper 12. The upper and lower ends of the flue 2 are each provided with a gear ring 10 that is rotatably connected to it. The inner walls of the two gear rings 10 are each fixed with a set of symmetrically arranged limiting blocks 11. The scraper 12 is slidably connected to the middle position of the limiting block 11.

[0026] Specifically, when the inner wall of the flue 2 needs to be scraped, the gear ring 10 only needs to be rotated, and the gear ring 10 will drive the scraper 12 to rotate, thereby scraping the dust accumulated on the inner wall of the flue 2.

[0027] As shown in Figure 5 , the upper end of the scraper 12 is provided with a gripping groove 13, and the end of the scraper 12 close to the flue 2 is trapezoidal. When the scraper 12 needs to be disassembled, it only needs to be pulled out of the limiting block 11 through the gripping groove 13.

[0028] As shown in Figure 1 , Figure 2 and Figure 3 , the conversion assembly includes a rotating shaft 7, a positioning block 8, a driving gear 9 and a blade 14, the upper end and the lower end of the outer wall of the flue 2 are fixedly connected with the positioning block 8, the rotating shaft 7 is rotatably connected with the positioning block 8, the middle position of the rotating shaft 7 penetrates the waste heat absorption pipeline 6, the two ends of the rotating shaft 7 are fixedly connected with the driving gear 9, the driving gear 9 is meshed with the gear ring 10, and the outer wall of the rotating shaft 7 is fixedly connected with a plurality of blades 14, and the blades 14 are located inside the waste heat absorption pipeline 6.

[0029] Specifically, after the water pump 5 injects water into the waste heat absorption pipeline 6, the water will drive the blade 14 to rotate the rotating shaft 7, and the rotating shaft 7 will drive the driving gear 9 to rotate. The gear ring 10 meshed with the driving gear 9 will rotate, thereby driving the scraper 12 to rotate.

[0030] As shown in Figure 2 , the cross section of the waste heat absorption pipeline 6 is rectangular. The waste heat absorption pipeline 6 arranged in a rectangular shape has a larger contact area with the flue 2 and has a better heat absorption effect.

[0031] As shown in Figure 1 and Figure 2 , the lower end of the flue 2 is fixedly connected with the ash discharge pipe 3.

[0032] As shown in Figure 1 and Figure 2 , the lower end of the ash discharge pipe 3 is threadedly connected with the dust collection box 4.

[0033] Specifically, when the scraper 12 scrapes the dust in the flue 2, the dust will fall into the dust collection box 4 through the ash discharge pipe 3, and when the dust collection box 4 needs to be cleaned, the dust collection box 4 is only needed to be rotated to be separated from the ash discharge pipe 3, so that the dust collection box 4 can be disassembled and cleaned.

[0034] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model.

Claims

1. An environmentally friendly boiler with waste heat recovery function, comprising a boiler main body (1), a flue (2) is installed at the upper end of the boiler main body (1), characterized in that, The boiler body (1) is fixed with a water pump (5) near the lower end of the flue (2), the water outlet of the water pump (5) is fixed with a waste heat absorption pipeline (6), the waste heat absorption pipeline (6) is fixed around the outer wall of the flue (2), one side of the flue (2) is provided with a conversion assembly rotatably connected with the waste heat absorption pipeline (6), and the inside of the flue (2) is rotatably connected with a dust scraping assembly.

2. The environmentally friendly boiler with waste heat recovery function according to claim 1, characterized in that, The dust scraping assembly comprises a gear ring (10), a limiting block (11) and a scraper (12), the upper end and the lower end of the flue (2) are both provided with a gear ring (10) rotatably connected therewith, the inner walls of the two gear rings (10) are both fixed with a set of symmetrically arranged limiting blocks (11), and the middle positions of the limiting blocks (11) are slidably connected with the scraper (12).

3. The environmentally friendly boiler with waste heat recovery function according to claim 2, characterized in that, The upper end of the scraper (12) is provided with a gripping groove (13), and one side of the end of the scraper (12) close to the flue (2) is trapezoidal.

4. The environmentally friendly boiler with waste heat recovery function according to claim 1, characterized in that, The conversion assembly comprises a rotating shaft (7), a positioning block (8), a driving gear (9) and a blade (14), the upper end and the lower end of the outer wall of the flue (2) are both fixed with a positioning block (8), the rotating shaft (7) is rotatably connected with the positioning block (8), the middle position of the rotating shaft (7) penetrates through the waste heat absorption pipeline (6), the two ends of the rotating shaft (7) are both fixed with a driving gear (9), the driving gears (9) are meshed with the gear rings (10), and the outer wall of the rotating shaft (7) is fixed with a plurality of blades (14), and the blades (14) are located inside the waste heat absorption pipeline (6).

5. The environmentally friendly boiler with waste heat recovery function according to claim 1, characterized in that, The cross section of the waste heat absorption pipeline (6) is rectangular.

6. The environmentally friendly boiler with waste heat recovery function according to claim 1, characterized in that, The lower end of the flue (2) is fixed with an ash discharge pipe (3).

7. The environmentally friendly boiler with waste heat recovery function according to claim 6, characterized in that, The lower end of the ash discharge pipe (3) is threadedly connected with a dust collecting box (4).

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