Boiler waste heat recovery device

Abstract

The utility model discloses a boiler waste heat recovery device, which belongs to the technical field of waste heat recovery, and can effectively clean dust in gas through a filter screen cover when the gas passes through the filter screen cover during working. And the situation that dust in gas cannot be stably cleaned and is excessively adhered to the outer side edge of the flow guide pipe for a long time to affect subsequent waste heat transfer is avoided as much as possible. The boiler waste heat recovery device comprises a recovery barrel, the bottom of the recovery barrel is in a funnel shape, a recovery cavity is formed in the recovery barrel, a filter screen cover is installed at the top in the recovery cavity, the recovery cavity is installed at the bottom of the filter screen cover, a flow guide pipe is installed in the recovery cavity, and an air outlet pipe is installed at the top of the recovery barrel. A communicating pipe is embedded in the recycling barrel, a spraying pipe is installed on the inner side edge of the recycling cavity and communicates with the communicating pipe, a communicating pipe is horizontally installed on one side edge of the recycling barrel and communicates with the communicating pipe, and the spraying pipe communicates with the communicating pipe. And a cleaning assembly for assisting in cleaning the filter screen cover is mounted in a recycling cavity of the recycling barrel.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste heat recovery, and in particular relates to a boiler waste heat recovery device. Background Art

[0002] A boiler waste heat recovery unit absorbs the heat from the boiler flue gas and displaces the heat from the flue gas through a heat transfer medium flowing through the heat exchange tubes, which is then reused. During heat exchange, particulate matter contained in the flue gas gradually adheres to the surface of the heat exchange tubes, increasing the thickness of the particulate matter. This affects heat exchange and reduces waste heat recovery efficiency.

[0003] The existing boiler waste heat recovery device cannot effectively filter out dust and other particles on the filter screen during the waste heat recovery process. During the waste heat recovery process, the dust in the boiler is prone to excessive adhesion in the guide pipe, causing the entire pipe to stick for a long time, affecting the overall waste heat transfer efficiency of the pipe. Therefore, a boiler waste heat recovery device is needed to assist in solving this problem. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a boiler waste heat recovery device. When the boiler waste heat recovery device is in operation, it can effectively clean the dust in the gas through the filter cover when the gas passes through the filter cover, so as to avoid the situation where the dust in the gas cannot be cleaned stably and excessively adheres to the outer edge of the guide pipe for a long time, affecting the subsequent waste heat transfer.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the utility model provides a boiler waste heat recovery device, which includes a recovery tube, the bottom of the recovery tube is funnel-shaped, a recovery chamber is opened inside the recovery tube, a filter screen cover is installed at the top of the recovery chamber, a recovery chamber is installed at the bottom of the filter screen cover, a guide pipe is installed in the recovery chamber, an air outlet pipe is installed at the top of the recovery tube, a conducting pipe is embedded in the recovery tube, an ejection pipe is installed on the inner side of the recovery chamber, the ejection pipe is connected to the conducting pipe, a connecting pipe is horizontally installed on one side of the recovery tube, the connecting pipe is connected to the conducting pipe, and a cleaning component for assisting in cleaning the filter screen cover is installed in the recovery chamber of the recovery tube.

[0008] Furthermore, the cleaning assembly includes a fixed ring fixed in the recovery chamber, an embedding groove is opened on the inner side edge of the fixed ring, an embedding block is slidably arranged at the embedding groove, a connecting rod is fixed on the embedding block, an arc-shaped cleaning plate is fixed on the connecting rod, a cleaning brush is arranged on the inner side edge of the cleaning plate, an engaging gear ring is protrudingly provided at the top of the fixed ring, a transmission motor is embedded and installed on the connecting rod, a meshing gear is installed at the front end of the shaft of the transmission motor, and the inner edge of the meshing gear ring is meshed with the outer edge of the meshing gear for transmission.

[0009] Furthermore, a ball is embedded and installed at one end of the connecting rod close to the inner side of the fixing ring, and the ball is symmetrically embedded and installed on the inner side of the fixing ring.

[0010] Furthermore, the vertical cross-sections of the embedding groove and the embedding block are both T-shaped.

[0011] Furthermore, three groups of the guide tubes are arranged from the inside to the outside. The guide tubes are installed in an S-shaped coil inside the recovery chamber. Both ends of the guide tubes extend out of the recovery cylinder. A water guide tube is fixed to one end of the guide tube extending out of the recovery cylinder.

[0012] Furthermore, a plurality of the ejection pipes are provided, and the plurality of the ejection pipes are arranged in a circular array with the axis of the recovery cylinder as the center.

[0013] Furthermore, a discharge port is provided at the bottom of the recovery cylinder, a threaded mounting ring is threadedly mounted at the discharge port, and the bottom of the threaded mounting ring is fixed at the top of the collection cylinder.

[0014] (3) Beneficial effects

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model is provided with a filter screen cover inside the recovery cylinder, and can effectively clean the dust in the gas through the filter screen cover when the gas passes through the filter screen cover during operation, and try to avoid the situation that the dust in the gas cannot be stably cleaned and excessively adheres to the outer edge of the guide pipe for a long time, affecting the subsequent waste heat transfer, etc.

[0017] The utility model uses a cleaning component arranged inside the recovery barrel, and a transmission motor drives the meshing gear to rotate as a whole, and the meshing gear and the meshing gear ring are meshed and transmitted, so that the meshing gear rotates as a whole along the fixed ring, and in the process of the meshing gear rotating along the fixed ring, it drives the connecting rod to rotate as a whole, and in the process of the connecting rod rotating, it drives the cleaning plate to rotate as a whole, and in the process of the cleaning plate rotating, it drives the cleaning brush on the cleaning plate to perform auxiliary cleaning on the surface of the filter cover, so as to avoid excessive dust accumulation on the outer side of the filter cover and affecting the passage of climate gases during subsequent filtration. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 It is a longitudinal sectional view of the utility model;

[0021] Figure 3 This is a transverse cross-sectional view of the cleaning component of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the cleaning component of the utility model.

[0023] The marks in the accompanying drawings are: 1. Recovery tube; 2. Collection tube; 3. Threaded mounting ring; 4. Ejection pipe; 5. Conducting pipe; 51. Connecting pipe; 6. Filter screen; 7. Diversion pipe; 71. Water guide pipe; 8. Exhaust pipe; 9. Cleaning assembly; 10. Fixing ring; 101. Meshing gear ring; 102. Embedded groove; 11. Connecting rod; 111. Embedded block; 112. Ball; 12. Cleaning plate; 121. Cleaning brush; 13. Transmission motor; 14. Meshing gear. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] This specific embodiment is a boiler waste heat recovery device, such as Figure 1 and Figure 2 As shown, the boiler waste heat recovery device includes a recovery drum 1, the bottom of the recovery drum 1 is funnel-shaped, and a discharge outlet is opened at the bottom of the recovery drum 1. A threaded mounting ring 3 is threadedly installed at the discharge outlet, and the bottom of the threaded mounting ring 3 is fixed at the top of the collecting drum 2. Through the set collecting drum 2, impurities generated after subsequent cleaning can be effectively collected during subsequent work. A recovery chamber is opened inside the recovery drum 1, and a filter screen 6 is installed at the top of the recovery chamber. A recovery chamber is installed at the bottom of the filter screen 6, and a guide pipe 7 is installed in the recovery chamber. An air outlet pipe 8 is installed at the top of the recovery drum 1, and a guide pipe 5 is embedded in the recovery drum 1. An ejection pipe 4 is installed on the inner side edge of the recovery chamber, and the ejection pipe 4 is connected to the guide pipe 5. A connecting pipe 51 is horizontally installed on one side of the recovery drum 1, and the connecting pipe 51 is connected to the guide pipe 5. A plurality of ejection pipes 4 are provided, and the plurality of ejection pipes 4 are arranged in a ring array with the axis of the recovery drum 1 as the center.

[0026] By means of a plurality of ejection pipes 4 arranged in a circular array, it can be ensured that the gas can be uniformly ejected toward the entire filter screen cover 6, ensuring that the dust in the gas can be effectively filtered, and during operation, when the gas passes through the filter screen cover 6, the dust in the gas can be effectively cleaned by the filter screen cover 6, and it is avoided as much as possible that the dust in the gas cannot be stably cleaned and excessively adheres to the outer edges of the guide tube 7 for a long time, affecting the subsequent waste heat transfer, etc.

[0027] The above-mentioned recovery chamber is equipped with a guide pipe 7, and three groups of guide pipes 7 are arranged from the inside to the outside. The guide pipe 7 is an S-shaped disc cavity installed inside the recovery chamber. Both ends of the guide pipe 7 extend out of the recovery cylinder 1. A water guide pipe 71 is fixed to one end of the guide pipe 7 extending out of the recovery cylinder 1. By setting up several guide pipes 7, the waste heat of the gas passing through the recovery chamber can be effectively recovered during the flow of liquid, thereby improving the overall waste heat recovery efficiency.

[0028] Reference Figure 1 、 Figure 3 and Figure 4 As shown, a cleaning assembly 9 for assisting in cleaning the filter screen 6 is installed in the recovery chamber of the recovery cylinder 1. The cleaning assembly 9 includes a fixed ring 10 fixed in the recovery chamber. An embedding groove 102 is provided on the inner side of the fixed ring 10. An embedding block 111 is slidably provided at the embedding groove 102. The vertical cross-sections of the embedding groove 102 and the embedding block 111 are both T-shaped. A connecting rod 11 is fixed to the embedding block 111. An arc-shaped cleaning plate 12 is fixed to the connecting rod 11. A cleaning brush 121 is provided on the inner side of the cleaning plate 12. A meshing gear ring 101 is protruding from the top of the fixed ring 10. A transmission motor 13 is embedded and installed on the connecting rod 11. A meshing gear 14 is installed at the front end of the shaft of the transmission motor 13. The inner edge of the meshing gear ring 101 and the outer edge of the meshing gear 14 are meshed for transmission.

[0029] Through the cleaning assembly 9 arranged inside the recovery barrel 1, the transmission motor 13 drives the meshing gear 14 to rotate as a whole, and the meshing gear 14 and the meshing gear ring 101 are meshed and transmitted, so that the meshing gear 14 rotates as a whole along the fixed ring 10, and in the process of the meshing gear 14 rotating along the fixed ring 10, it drives the connecting rod 11 to rotate as a whole, and in the process of the connecting rod 11 rotating, it drives the cleaning plate 12 to rotate as a whole, and in the process of the cleaning plate 12 rotating, it drives the cleaning brush 121 on the cleaning plate 12 to perform auxiliary cleaning on the surface of the filter screen cover 6, so as to avoid excessive dust accumulation on the outer side of the filter screen cover 6 and affecting the passage of climate gases during subsequent filtration.

[0030] A ball 112 is embedded and installed at one end of the connecting rod 11 close to the inner side of the fixing ring 10 , and the ball 112 is symmetrically embedded and installed on the inner side of the fixing ring 10 .

[0031] By providing the balls 112 , the overall resistance of the connecting rod 11 when sliding can be reduced during the movement of the fixing ring 10 , thereby avoiding as much as possible a large overall resistance of the connecting rod 11 when sliding.

[0032] Working principle:

[0033] During operation, the gas after combustion in the boiler is sent into the guide pipe 5 through the connecting pipe 51 and is ejected as a whole through the ejection pipe 4. During the ejection process of the ejection pipe 4, the impurities in the gas are assisted filtered by the filter mesh cover 6. The filtered gas is discharged as a whole through the outlet pipe 8. When the gas reaches the recovery chamber, it flows in the recovery chamber through the water flow inside the guide pipe 7, thereby realizing the waste heat recovery treatment inside the gas.

[0034] After working for a period of time, the transmission motor 13 is started, and the transmission motor 13 drives the meshing gear 14 to rotate as a whole. The meshing gear 14 and the meshing gear ring 101 are meshed and transmitted, so that the meshing gear 14 rotates as a whole along the fixed ring 10. In the process of the meshing gear 14 rotating along the fixed ring 10, it drives the connecting rod 11 to rotate as a whole. In the process of the rotation of the connecting rod 11, it drives the cleaning plate 12 to rotate as a whole, and in the process of the rotation of the cleaning plate 12, it drives the cleaning brush 121 on the cleaning plate 12 to perform auxiliary cleaning on the surface of the filter cover 6. The cleaned impurities fall onto the collection barrel 2. In subsequent work, the collection barrel 2 is rotated, and the threaded mounting ring 3 is threadedly matched with the discharge port, so that the overall disassembly of the collection barrel 2 can be realized.

[0035] All technical features in this embodiment can be freely combined according to actual needs.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A boiler waste heat recovery device, comprising a recovery drum (1), characterized in that: The bottom of the recovery cylinder (1) is funnel-shaped, a recovery chamber is provided inside the recovery cylinder (1), a filter screen cover (6) is installed at the top of the recovery chamber, a recovery chamber is installed at the bottom of the filter screen cover (6), a guide pipe (7) is installed in the recovery chamber, an air outlet pipe (8) is installed at the top of the recovery cylinder (1), a conducting pipe (5) is embedded and installed inside the recovery cylinder (1), an ejection pipe (4) is installed on the inner side of the recovery chamber, the ejection pipe (4) is connected to the conducting pipe (5), a connecting pipe (51) is horizontally installed on one side of the recovery cylinder (1), the connecting pipe (51) is connected to the conducting pipe (5), and a cleaning component (9) for assisting in cleaning the filter screen cover (6) is installed in the recovery chamber of the recovery cylinder (1).

2. A boiler waste heat recovery device according to claim 1, characterized in that: The cleaning assembly (9) comprises a fixed ring (10) fixed in the recovery chamber, an embedding groove (102) is provided on the inner side of the fixed ring (10), an embedding block (111) is slidably provided at the embedding groove (102), a connecting rod (11) is fixed on the embedding block (111), an arc-shaped cleaning plate (12) is fixed on the connecting rod (11), a cleaning brush (121) is provided on the inner side of the cleaning plate (12), a meshing gear ring (101) is protrudingly provided at the top of the fixed ring (10), a transmission motor (13) is embedded and installed on the connecting rod (11), a meshing gear (14) is installed on the front end of the shaft of the transmission motor (13), and the inner edge of the meshing gear ring (101) is meshed with the outer edge of the meshing gear (14) for transmission.

3. A boiler waste heat recovery device according to claim 2, characterized in that: A ball (112) is embedded and installed at one end of the connecting rod (11) close to the inner side of the fixing ring (10), and the ball (112) is symmetrically embedded and installed on the inner side of the fixing ring (10).

4. The boiler waste heat recovery device according to claim 3, characterized in that: The vertical cross-sections of the embedding groove (102) and the embedding block (111) are both T-shaped.

5. The boiler waste heat recovery device according to claim 1, characterized in that: The guide pipe (7) is provided with three groups from the inside to the outside. The guide pipe (7) is installed in an S-shaped coil inside the recovery chamber. Both ends of the guide pipe (7) extend out of the recovery cylinder (1). A water guide pipe (71) is fixed to one end of the guide pipe (7) extending out of the recovery cylinder (1).

6. The boiler waste heat recovery device according to claim 1, characterized in that: A plurality of the ejection pipes (4) are provided, and the plurality of the ejection pipes (4) are arranged in a circular array with the axis of the recovery cylinder (1) as the center.

7. The boiler waste heat recovery device according to claim 1, characterized in that: A discharge port is provided at the bottom of the recovery cylinder (1), a threaded mounting ring (3) is threadedly mounted at the discharge port, and the bottom of the threaded mounting ring (3) is fixed to the top of the collection cylinder (2).

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