Energy-saving and emission-reducing device for recycling boiler flue gas

Abstract

The utility model discloses a boiler flue gas recycling energy-saving emission reduction device which comprises a first breather pipe and a second breather pipe, a sleeve is rotatably connected to the interior of the second breather pipe, a fixing ring is fixedly connected to one side of the sleeve, a filter screen is fixedly connected to the interior of the fixing ring, a mounting plate is fixedly connected to the interior of the first breather pipe, and the filter screen is fixedly connected to the interior of the mounting plate. Two sets of sliding rods are slidably connected into the mounting plate, the sides, facing the filter screen, of the sliding rods are fixedly connected with scraping plates, a connecting pipe is fixedly connected between the two sets of first ventilation pipes, the middle of the connecting pipe is fixedly connected with an air inlet pipe, and the sides, away from the first ventilation pipes, of second ventilation pipes are fixedly connected with a collection box; according to the flue gas recovery device, the filter screen can be cleaned during flue gas recovery, double sets of filter systems are adopted, one set of filter system can be disconnected, and the filter screen can be replaced.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically to a boiler flue gas recovery and utilization energy-saving and emission-reduction device. Background Technology

[0002] Boiler flue gas recovery and utilization is an important energy-saving technology. It recovers the waste heat from the flue gas emitted by the boiler, thereby enabling the reuse of energy and improving energy efficiency.

[0003] Boilers produce a lot of exhaust gas after combustion, which contains a lot of dust and sulfur dioxide, as well as a lot of heat. When existing equipment treats exhaust gas, the filter screen is easily clogged by impurities, which affects the normal air circulation. Moreover, when the filter screen needs to be replaced, the entire system needs to be disconnected, which affects the overall operation of the equipment. Utility Model Content

[0004] The purpose of this utility model is to provide a boiler flue gas recovery and utilization energy-saving and emission-reduction device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a boiler flue gas recovery and energy-saving emission reduction device, comprising a first vent pipe and a second vent pipe. A sleeve is rotatably connected inside the second vent pipe, and a fixing ring is fixedly connected to one side of the sleeve. A filter screen is fixedly connected inside the fixing ring. An installation plate is fixedly connected inside the first vent pipe. Two sets of sliding rods are slidably connected inside the installation plate. A scraper is fixedly connected to the side of the sliding rod facing the filter screen, and a first fixing plate is fixedly connected to the other end of the sliding rod. A first spring is fixedly connected between the first fixing plate and the installation plate. The first spring is sleeved on the outside of the sliding rod. A connecting pipe is fixedly connected between the two sets of first vent pipes. An air inlet pipe is fixedly connected to the middle of the connecting pipe. A collection box is fixedly connected to the side of the second vent pipe away from the first vent pipe, and an air outlet pipe is fixedly connected to the middle of the other side of the collection box.

[0006] Preferably, an installation ring is fixedly connected to the outside of the first vent pipe, a threaded rod is fixedly connected to the middle of the upper side of the installation ring, a rotating groove is opened on the upper part of the fixed ring, and a positioning nut is threaded through the outside of the rotating groove of the threaded rod.

[0007] Preferably, the fixing ring has an embedding groove on both sides, the filter screen has an embedding piece fixedly connected to both sides, and the embedding groove and the embedding piece have matching mounting holes inside.

[0008] Preferably, the fixing ring is fixedly connected to two sets of connecting rings on the side facing the first vent pipe.

[0009] Preferably, a rotating shaft is rotatably connected inside the first and second vent pipes, a valve is fixedly connected to the outside of the rotating shaft, and a handle is fixedly connected to the upper part of the rotating shaft through the first and second vent pipes.

[0010] Preferably, a locking rod is slidably connected inside one side of the handle, a second fixing plate is fixedly connected to the upper part of the locking rod, a second spring is fixedly connected between the second fixing plate and the handle, the second spring is sleeved on the outside of the locking rod, and a locking hole for cooperating with the locking rod is opened on the upper part of the first vent pipe and the second vent pipe.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention uses a fixed ring to drive the sleeve to rotate inside the second vent pipe, causing the scraper to remove impurities from the filter screen. The handle drives the valve to rotate, thereby opening and closing the first and second vent pipes. By sliding the sleeve along the second vent pipe, the filter screen can be detached from the first vent pipe, facilitating the replacement of the single filter screen. It can clean the filter screen during flue gas recovery, preventing filter screen blockage. Furthermore, it adopts a dual filtration system, allowing the replacement of the filter screen from one of the filtration systems without affecting the normal operation of the overall filtration system. Attached Figure Description

[0013] Figure 1 This is a first-view three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the second-view ventilation pipe structure of this utility model;

[0015] Figure 3 This is a cross-sectional view of the ventilator structure from a third-view perspective of this utility model;

[0016] Figure 4 This is a schematic diagram of the fourth-view filter structure of this utility model.

[0017] In the diagram: 1. First vent pipe; 2. Second vent pipe; 3. Sleeve; 4. Filter screen; 5. Mounting ring; 6. Threaded rod; 7. Rotating groove; 8. Positioning nut; 9. Mounting plate; 10. Sliding rod; 11. First fixing piece; 12. First spring; 13. Scraper; 14. Embedded groove; 15. Embedded piece; 16. Mounting hole; 17. Connecting ring; 18. Rotating shaft; 19. Valve; 20. Handle; 21. Locking hole; 22. Locking rod; 23. Second fixing piece; 24. Second spring; 25. Connecting pipe; 26. Inlet pipe; 27. Collection box; 28. Outlet pipe; 29. ​​Fixing ring. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-4 This utility model provides a technical solution: a boiler flue gas recovery and energy-saving emission reduction device, including a first vent pipe 1 and a second vent pipe 2. A sleeve 3 is rotatably installed inside the second vent pipe 2. A fixing ring 29 is fixedly welded to one side of the sleeve 3. A filter screen 4 is threadedly connected inside the fixing ring 29. An installation plate 9 is fixedly welded inside the first vent pipe 1. Two sets of sliding rods 10 are slidably installed inside the installation plate 9. A scraper 13 is fixedly welded to the side of the sliding rod 10 facing the filter screen 4. A first fixing piece 11 is fixedly welded to the other end of the sliding rod 10. A first spring 12 is fixedly welded between the first fixing piece 11 and the installation plate 9. The first spring 12 is sleeved on the outside of the sliding rod 10. The first spring 12 pulls the first fixing piece 11, which in turn causes the scraper 13 to move through the sliding rod 10. Plate 13 is in close contact with filter screen 4. The sleeve 3 is rotated in the second vent pipe 2 by the fixing ring 29, so that the scraper 13 scrapes off the impurities on the filter screen 4. By sliding the sleeve 3 along the second vent pipe 2, the filter screen 4 is separated from one side of the first vent pipe 1, which makes it convenient to replace a single set of filter screen 4. A connecting pipe 25 is fixedly welded between the two sets of first vent pipes 1. An air inlet pipe 26 is fixedly welded in the middle of the connecting pipe 25. A collection box 27 is fixedly welded on the side of the second vent pipe 2 away from the first vent pipe 1. An air outlet pipe 28 is fixedly welded in the middle of the other side of the collection box 27. The gas enters the equipment through the air inlet pipe 26, enters the first vent pipes 1 on both sides through the connecting pipe 25, and after being filtered by the filter screen 4, it enters the collection box 27 through the second vent pipe 2 and is then discharged through the air outlet pipe 28.

[0020] A mounting ring 5 is fixedly welded to the outer side of the first vent pipe 1. A threaded rod 6 is fixedly welded to the upper middle part of the mounting ring 5. A rotating groove 7 is opened on the upper part of the fixing ring 29. The threaded rod 6 passes through the rotating groove 7 and a positioning nut 8 is installed on the outer thread. By rotating the positioning nut 8, the positioning nut 8 presses the fixing ring 29, thereby moving the filter screen 4 towards the first vent pipe 1, realizing the connection between the filter screen 4 and the first vent pipe 1. An embedding groove 14 is opened on both sides inside the fixing ring 29. An embedding piece 15 is fixedly welded to both sides of the filter screen 4. The embedding groove 14 and the embedding piece 15 have matching mounting holes 16. The embedding piece 15 and the embedding groove 14 are connected through the mounting holes 16, realizing the detachability of the filter screen 4 and the fixing ring 29, which is convenient for replacing the filter screen 4. Two sets of connecting rings 17 are fixedly welded to the side of the fixing ring 29 facing the first vent pipe 1. The other side of the fixing ring 29 is inserted into the first vent pipe 1 to package the fixing ring 29 and the first vent pipe. 1. Tight connection; a rotating shaft 18 is rotatably installed inside the first vent pipe 1 and the second vent pipe 2. A valve 19 is fixedly welded to the outside of the rotating shaft 18. A handle 20 is fixedly welded to the upper part of the rotating shaft 18, penetrating the first vent pipe 1 and the second vent pipe 2. The valve 19 is rotated by the handle 20, thereby opening and closing a single set of the first vent pipe 1 and the second vent pipe 2. The pipeline can be disconnected when replacing a single set of filter screens 4. A locking rod 22 is slidably connected inside one side of the handle 20. A second fixing plate 23 is fixedly welded to the upper part of the locking rod 22. A second spring 24 is fixedly welded between the second fixing plate 23 and the handle 20. The second spring 24 is sleeved on the outside of the locking rod 22. A locking hole 21 is opened on the upper part of the first vent pipe 1 and the second vent pipe 2 to cooperate with the locking rod 22. The second spring 24 pulls the second fixing plate 23 to make the locking rod 22 insert into the locking hole 21, thereby fixing the rotation of the rotating shaft 18.

[0021] Working principle: When in use, the first spring 12 pulls the first fixing plate 11, and the sliding rod 10 makes the scraper 13 stick tightly to the filter screen 4. The fixing ring 29 drives the sleeve 3 to rotate inside the second vent pipe 2, so that the scraper 13 scrapes off the impurities on the filter screen 4. The handle 20 drives the valve 19 to rotate, thereby opening and closing the single set of first vent pipe 1 and second vent pipe 2. The pipeline can be disconnected when replacing a single set of filter screen 4. The second spring 24 pulls the second fixing plate 23, so that the locking rod 22 is inserted into the locking hole 21 to fix the rotation of the rotating shaft 18. By rotating the positioning nut 8, the positioning nut 8 is disengaged from the threaded rod 6. By sliding the sleeve 3 along the second vent pipe 2, the filter screen 4 is disengaged from one side of the first vent pipe 1, which facilitates the replacement of a single set of filter screen 4.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A boiler flue gas recovery and energy-saving emission reduction device, comprising a first vent pipe (1) and a second vent pipe (2), characterized in that: The second vent pipe (2) is rotatably connected to a sleeve (3). A fixing ring (29) is fixedly connected to one side of the sleeve (3). A filter screen (4) is fixedly connected inside the fixing ring (29). The first vent pipe (1) is fixedly connected to a mounting plate (9). Two sets of sliding rods (10) are slidably connected inside the mounting plate (9). A scraper (13) is fixedly connected to the side of the sliding rod (10) facing the filter screen (4). A first fixing plate (1) is fixedly connected to the other end of the sliding rod (10). 1) A first spring (12) is fixedly connected between the first fixing plate (11) and the mounting plate (9). The first spring (12) is sleeved on the outside of the sliding rod (10). A connecting pipe (25) is fixedly connected between the two sets of first vent pipes (1). An air inlet pipe (26) is fixedly connected in the middle of the connecting pipe (25). A collection box (27) is fixedly connected on the side of the second vent pipe (2) away from the first vent pipe (1). An air outlet pipe (28) is fixedly connected in the middle of the other side of the collection box (27).

2. The boiler flue gas recovery and energy-saving emission reduction device according to claim 1, characterized in that: An installation ring (5) is fixedly connected to the outside of the first ventilation pipe (1). A threaded rod (6) is fixedly connected to the middle of the upper side of the installation ring (5). A rotating groove (7) is opened on the upper part of the fixed ring (29). A positioning nut (8) is threaded through the rotating groove (7) and connected to the outside of the threaded rod (6).

3. The boiler flue gas recovery and energy-saving emission reduction device according to claim 1, characterized in that: The fixing ring (29) has an embedding groove (14) on both sides inside, and the filter screen (4) has an embedding piece (15) fixedly connected to both sides. The embedding groove (14) and the embedding piece (15) have matching mounting holes (16) inside.

4. The boiler flue gas recovery and energy-saving emission reduction device according to claim 1, characterized in that: The fixing ring (29) is fixedly connected to two sets of connecting rings (17) on the side facing the first vent pipe (1).

5. The boiler flue gas recovery and energy-saving emission reduction device according to claim 1, characterized in that: A rotating shaft (18) is rotatably connected inside the first vent pipe (1) and the second vent pipe (2). A valve (19) is fixedly connected to the outside of the rotating shaft (18). A handle (20) is fixedly connected to the upper part of the rotating shaft (18) through the first vent pipe (1) and the second vent pipe (2).

6. The boiler flue gas recovery and energy-saving emission reduction device according to claim 5, characterized in that: A locking rod (22) is slidably connected inside one side of the handle (20). A second fixing piece (23) is fixedly connected to the upper part of the locking rod (22). A second spring (24) is fixedly connected between the second fixing piece (23) and the handle (20). The second spring (24) is sleeved on the outside of the locking rod (22). The upper part of the first vent pipe (1) and the second vent pipe (2) is provided with a locking hole (21) that matches the locking rod (22).

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