Flue gas waste heat recovery device

Abstract

The utility model belongs to the technical field of recovery devices, and particularly relates to a flue gas waste heat recovery device which comprises a recovery box. A filtering box is fixedly connected to one side face of the recycling box, a filtering plate is slidably connected to the interior of the filtering box, a filtering groove is formed in one side face of the filtering plate, and a filtering net is fixedly connected to the inner side wall of the filtering groove; through the arrangement of the positioning mechanism, the filter screen can be quickly replaced, the filter screen does not need to be cleaned in the filter box, dust accumulation is avoided, the cleaning efficiency of the filter screen and the dust is improved, and smoke filtering is not affected, that is, when the filter screen needs to be replaced, a shifting block can be pushed to drive a sealing block to move, and the sealing block applies pressure to a spring; according to the utility model, two groups of sealing grooves are formed, one group of new filter plates are inserted into one adjacent sealing groove to replace the old filter plates for filtering operation, and at the moment, the old filter screen plates can be pulled out without influencing the smoke filtering operation.

Description

Technical Field

[0001] The utility model belongs to the technical field of recovery devices, in particular to a flue gas waste heat recovery device. Background Art

[0002] During the use of the boiler, the flue gas generated by the combustion of the fuel is discharged through the exhaust pipe. When the flue gas is discharged, a scrubber is usually set at the outlet end of the exhaust pipe, and a filter is set inside the scrubber to filter impurities in the flue gas so that the exhaust gas can meet the emission standards. At the same time, the heat in the flue gas is introduced into the water to heat the water. By setting a heat exchange copper tube inside the scrubber and connecting the heat exchange copper tube to the external circulation pipeline system, the purpose of recovering the waste heat of the flue gas is achieved.

[0003] When the filter screen filters the flue gas, impurities will be blocked on the surface of the filter screen, which will affect the normal use of the boiler. Usually, the dust on the filter screen is scraped off by reciprocating scraping blocks, but most of the scraped dust is accumulated at the bottom of the heat exchange box, and the dust still needs to be cleaned; therefore, a flue gas waste heat recovery device is proposed to address the above problem. Utility Model Content

[0004] In order to make up for the shortcomings of the existing technology and solve the problem that impurities will be blocked on the surface of the filter when the filter filters the flue gas, which will in turn affect the normal use of the boiler. Usually, the dust on the filter is scraped off by a reciprocating scraper block. However, the dust after scraping is mostly accumulated at the bottom of the heat exchange box, and the dust still needs to be cleaned. A flue gas waste heat recovery device is proposed.

[0005] The technical solution adopted by the utility model to solve the technical problem is as follows: a flue gas waste heat recovery device described in the utility model comprises a recovery box; a filter box is fixedly connected to one side of the recovery box, a filter plate is slidably connected inside the filter box, a filter groove is opened on one side of the filter plate, and a filter screen is fixedly connected to the inner side wall of the filter groove;

[0006] The filter box is provided with a positioning mechanism, which includes a sealing groove opened on the top of the filter box, a replacement groove opened on the inner side wall of the sealing groove, a sealing block slidably connected in the replacement groove, one end of the sealing block is elastically connected to the inner side wall of the replacement groove by a spring, the other end of the sealing block extends out of the replacement groove and is inserted into the card groove opened on the inner side wall of the sealing groove, a toggle groove connected to the replacement groove is opened on one side of the filter box, a toggle block is fixedly connected to a side of the sealing block close to the toggle groove, and one end of the toggle block extends into the toggle groove. By setting the positioning mechanism, the filter plate can be quickly replaced and the leakage of smoke can be reduced.

[0007] Preferably, an auxiliary groove is provided at the top of the filter plate, the inner side wall of the auxiliary groove is rotatably connected to an auxiliary block via a rotating shaft, the bottom of the auxiliary block is fixedly connected to a first magnetic block, and the inner bottom wall of the auxiliary groove is fixedly connected to a second magnetic block, and through the cooperation of the auxiliary block, the first magnetic block and the second magnetic block, the auxiliary block can be easily unfolded so that the filter plate can be pulled out through the auxiliary block.

[0008] Preferably, the top of the filter plate is rotatably connected to a fixed block via a rotating shaft, and a limiting groove is provided at the bottom of the sealing block. A driving block is slidably connected in the limiting groove, and a limiting groove extends from the bottom end of the driving block. By setting the fixed block, the auxiliary block can be limited in the auxiliary groove, thereby simplifying the steps of installing the filter plate. There is no need to press the driving block, and when the filter plate is installed, the sealing block is reset and the driving block moves downward to push the fixed block to rotate, thereby releasing the limit on the auxiliary block.

[0009] Preferably, an air induced draft plate is fixedly connected to the inner wall of the filter box, and the air induced draft plate is arranged obliquely. Through the arrangement of the air induced draft plate, the smoke can be guided onto the filter net.

[0010] Preferably, a positioning rod is fixedly connected to the inner bottom wall of the filter box, and a positioning hole matched with the positioning rod is opened at the bottom of the filter plate. The movement of the filter net is positioned by setting the positioning rod.

[0011] Preferably, one end of the toggle block extends out of the toggle groove and is fixedly connected to a blocking block, and a sealing gasket is provided on a side of the blocking block close to the filter box. Through the setting of the blocking block, the toggle groove can be shielded to prevent smoke from escaping from the through groove and to prevent external dust from entering the replacement groove through the toggle groove.

[0012] Preferably, a sealing gasket is provided on the outer wall of the filter box, and a sealing gasket is provided on the outer wall of the sealing block. By providing a sealing gasket on the outer wall of the filter box and a sealing gasket on the outer wall of the sealing block, the sealing performance is improved.

[0013] Beneficial effects of the utility model:

[0014] 1. The utility model provides a flue gas waste heat recovery device. Through the setting of the positioning mechanism, the filter screen can be quickly replaced. There is no need to clean the filter screen in the filter box to cause dust accumulation, thereby improving the cleaning efficiency of the filter screen and dust without affecting the filtering of the flue gas. That is, when the filter screen needs to be replaced, the toggle block can be pushed to drive the sealing block to move, and the sealing block applies pressure to the spring to leak out the sealing groove. The sealing groove is provided with two groups. A new set of filter plates is inserted into an adjacent sealing groove to replace the old filter plate for filtering. At this time, the old filter screen plate can be pulled up without affecting the filtering work of the flue gas.

[0015] 2. The utility model provides a flue gas waste heat recovery device. Through the cooperation of the auxiliary block, the first magnetic block and the second magnetic block, the auxiliary block can be easily unfolded so that the filter plate can be pulled out through the auxiliary block. That is, after the sealing block moves, the limit on the auxiliary block disappears, and the side adjacent to the first magnetic block and the second magnetic block are set at the same level. The auxiliary block pops open under the action of the repulsive force between the magnetic blocks, so that the filter plate can be pulled out by holding the auxiliary block, avoiding the filter plate being embedded in the sealing groove and being inconvenient to pull out. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a three-dimensional diagram of the filter box in the utility model;

[0019] Figure 3 This is one of the cross-sectional structural diagrams of the filter box in the utility model;

[0020] Figure 4 This is the second cross-sectional structural diagram of the filter box in the utility model;

[0021] Figure 5 This is the third cross-sectional structural diagram of the filter box in the utility model;

[0022] Figure 6 It is a three-dimensional diagram of the filter plate in the utility model;

[0023] Figure 7 It is an exploded structural diagram of the filter plate and the sealing block in the utility model;

[0024] Figure 8 yes Figure 3 Enlarged structural diagram at point A in the middle.

[0025] Legend:

[0026] 1. Recovery box; 2. Filter box; 3. Filter screen; 4. Filter plate; 5. Positioning mechanism; 51. Sealing groove; 52. Sealing block; 53. Spring; 54. Toggle groove; 55. Card slot; 6. Auxiliary groove; 7. Auxiliary block; 8. First magnetic block; 9. Fixed block; 10. Positioning rod; 11. Blocking block. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Specific examples are given below.

[0029] See also Figure 1-Figure 8 The utility model provides a flue gas waste heat recovery device, comprising a recovery box 1; a filter box 2 is fixedly connected to one side of the recovery box 1, a filter plate 4 is slidably connected inside the filter box 2, a filter groove is opened on one side of the filter plate 4, and a filter screen 3 is fixedly connected to the inner side wall of the filter groove;

[0030] The filter box 2 is provided with a positioning mechanism 5, which includes a sealing groove 51 opened on the top of the filter box 2, a replacement groove opened on the inner side wall of the sealing groove 51, a sealing block 52 slidably connected in the replacement groove, one end of the sealing block 52 is elastically connected to the inner side wall of the replacement groove through a spring 53, and the other end of the sealing block 52 extends out of the replacement groove and is inserted into a card groove 55 opened on the inner side wall of the sealing groove 51, a toggle groove 54 connected to the replacement groove is opened on one side of the filter box 2, and a toggle block is fixedly connected to the side of the sealing block 52 close to the toggle groove 54 , one end of the toggle block extends into the toggle groove 54; during operation, through the setting of the positioning mechanism 5, the filter screen 3 can be quickly replaced without affecting the filtering of the smoke, that is, when the filter screen 3 needs to be replaced, the toggle block can be pushed to drive the sealing block 52 to move, and the sealing block 52 applies pressure to the spring 53 to leak out of the sealing groove 51. The sealing groove 51 is provided with two groups. A group of new filter plates 4 is inserted into an adjacent sealing groove 51 to replace the old filter plate 4 for filtering. At this time, the old filter plate 4 can be pulled out without affecting the filtering work of the smoke.

[0031] Further, such as Figure 3 and Figure 8 As shown, the top of the filter plate 4 is provided with an auxiliary groove 6, the inner side wall of the auxiliary groove 6 is rotatably connected with an auxiliary block 7 through a rotating shaft, the bottom of the auxiliary block 7 is fixedly connected with a first magnetic block 8, and the inner bottom wall of the auxiliary groove 6 is fixedly connected with a second magnetic block. During operation, the auxiliary block 7 can be easily unfolded through the cooperation of the auxiliary block 7, the first magnetic block 8 and the second magnetic block, so that the filter plate 4 can be pulled out through the auxiliary block 7, that is, after the sealing block 52 moves, the limit on the auxiliary block 7 disappears, and the side surface adjacent to the first magnetic block 8 and the second magnetic block is set at the same level, and the auxiliary block 7 is bounced open under the action of the repulsive force between the magnetic blocks, so that the filter plate 4 can be pulled out by holding the auxiliary block 7, and the filter plate 4 is prevented from being embedded in the sealing groove 51 and being inconvenient to be pulled out.

[0032] Further, such as Figure 6 and Figure 7 As shown, the top of the filter plate 4 is rotatably connected to a fixed block 9 through a rotating shaft, and a limiting groove is provided at the bottom of the sealing block 52. A driving block is slidably connected in the limiting groove, and the bottom end of the driving block extends out of the limiting groove. During operation, the auxiliary block 7 can be limited in the auxiliary groove 6 by setting the fixing block 9, simplifying the steps of installing the filter plate 4, without pressing the driving block, and when the filter plate 4 is installed, the sealing block 52 is reset and the driving block moves downward to push the fixing block 93 to rotate, thereby releasing the limit on the auxiliary block 7.

[0033] Further, such as Figure 2 and Figure 4 As shown, the inner wall of the filter box 2 is fixedly connected with an air induction plate, which is arranged at an angle. During operation, the smoke can be guided to the filter screen 3 by the arrangement of the air induction plate.

[0034] Further, such as Figure 5 As shown, the inner bottom wall of the filter box 2 is fixedly connected with a positioning rod 10, and the bottom of the filter plate 4 is provided with a positioning hole adapted to the positioning rod 10. During operation, the movement of the filter screen 3 is positioned by the setting of the positioning rod 10.

[0035] Further, such as Figure 2 As shown, one end of the toggle block extends out of the toggle slot 54 and is fixedly connected to a shielding block 11, and a sealing gasket is provided on a side of the shielding block 11 close to the filter box 2. During operation, the shielding block 11 can shield the toggle slot 54 to prevent smoke from escaping from the through slot and to prevent external dust from entering the replacement slot through the toggle slot 54.

[0036] Further, such as Figure 2 and Figure 3 As shown, a sealing gasket is provided on the outer wall of the filter box 2, and a sealing gasket is provided on the outer wall of the sealing block 52. During operation, the sealing performance is improved by providing a sealing gasket on the outer wall of the filter box 2 and a sealing gasket on the outer wall of the sealing block 52.

[0037] Working principle: when the filter 3 needs to be replaced, the toggle block can be pushed to drive the sealing block 52 to move. The sealing block 52 applies pressure to the spring 53 to leak out of the sealing groove 51. There are two groups of sealing grooves 51. A new group of filter plates 4 is inserted into an adjacent sealing groove 51 to replace the old filter plate 4 for filtering. At this time, the old filter plate 4 can be pulled out without affecting the filtering of the smoke. After the sealing block 52 moves, the limit on the auxiliary block 7 disappears, and the side adjacent to the first magnetic block 8 and the second magnetic block is set at the same level. The auxiliary block 7 pops open under the action of the repulsive force between the magnetic blocks, so that the filter plate 4 can be pulled out by holding the auxiliary block 7, avoiding the filter plate 4 being embedded in the sealing groove 51 and being inconvenient to pull out.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A flue gas waste heat recovery device, comprising a recovery box (1); a filter box (2) is fixedly connected to one side of the recovery box (1), and a filter plate (4) is slidably connected inside the filter box (2), characterized in that: A filter groove is provided on one side of the filter plate (4), and a filter screen (3) is fixedly connected to the inner wall of the filter groove; The filter box (2) is provided with a positioning mechanism (5), the positioning mechanism (5) comprising a sealing groove (51) provided at the top of the filter box (2), a replacement groove provided on the inner side wall of the sealing groove (51), a sealing block (52) slidably connected in the replacement groove, one end of the sealing block (52) being elastically connected to the inner side wall of the replacement groove via a spring (53), the other end of the sealing block (52) extending out of the replacement groove and inserted into a clamping groove (55) provided on the inner side wall of the sealing groove (51), a toggle groove (54) connected to the replacement groove provided on one side of the filter box (2), a toggle block fixedly connected to a side of the sealing block (52) close to the toggle groove (54), one end of the toggle block extending into the toggle groove (54).

2. The flue gas waste heat recovery device according to claim 1, characterized in that: An auxiliary groove (6) is provided on the top of the filter plate (4); the inner side wall of the auxiliary groove (6) is rotatably connected to an auxiliary block (7) via a rotating shaft; the bottom of the auxiliary block (7) is fixedly connected to a first magnetic block (8); and the inner bottom wall of the auxiliary groove (6) is fixedly connected to a second magnetic block.

3. A flue gas waste heat recovery device according to claim 2, characterized in that: The top of the filter plate (4) is rotatably connected to a fixing block (9) via a rotating shaft, and the bottom of the sealing block (52) is provided with a limiting groove, in which a driving block is slidably connected, and the bottom end of the driving block extends out of the limiting groove.

4. The flue gas waste heat recovery device according to claim 3, characterized in that: The inner side wall of the filter box (2) is fixedly connected with an air induction plate, and the air induction plate is arranged at an angle.

5. The flue gas waste heat recovery device according to claim 4, characterized in that: A positioning rod (10) is fixedly connected to the inner bottom wall of the filter box (2), and a positioning hole matching the positioning rod (10) is provided at the bottom of the filter plate (4).

6. The flue gas waste heat recovery device according to claim 5, characterized in that: One end of the toggle block extends out of a toggle groove (54) and is fixedly connected to a shielding block (11); a sealing gasket is provided on a side of the shielding block (11) close to the filter box (2).

7. The flue gas waste heat recovery device according to claim 6, characterized in that: The outer wall of the filter box (2) is provided with a sealing gasket, and the outer wall of the sealing block (52) is provided with a sealing gasket.

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