Waste heat recovery device for heating boiler

Abstract

The utility model relates to a waste heat recovery device for a heating boiler, which belongs to the technical field of waste heat recovery and comprises a recovery box, one side of the recovery box is fixedly connected with a smoke inlet pipe, the other side of the recovery box is fixedly connected with a smoke outlet pipe, a heat exchange pipe is fixedly mounted in the recovery box, and a cleaning component is arranged on the outer side of the heat exchange pipe. The cleaning assembly comprises a mounting plate arranged in the recycling box, the outer side of the mounting plate is fixedly connected with a plurality of scraping rings connected to the outer wall of the heat exchange pipe in a sleeving mode, and a lifting mechanism is arranged on the upper side of the mounting plate. The lifting mechanism comprises a mounting box, a driving motor is fixedly mounted on the upper side of the mounting box, a lead screw is fixedly mounted on an output shaft of the driving motor, and the outer side of the lead screw is in threaded connection with a threaded sleeve. According to the waste heat recovery device for the heat supply boiler, the vast majority of positions of the heat exchange pipes are cleaned, and the heat exchange efficiency of the heat exchange pipes is guaranteed.

Description

Technical Field

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

[0002] A boiler is an energy conversion device. Energy input to the boiler includes chemical energy from fuel and electrical energy, and the boiler outputs a certain amount of thermal energy in the form of steam, high-temperature water, or an organic heat carrier. Heating boilers include steam boilers, hot water boilers, heat pipe boilers, hot air furnaces, and heat carrier furnaces. Heating boilers generate large amounts of heat-carrying flue gas during operation. Factories generally use waste heat recovery devices to recover the heat from this flue gas.

[0003] The prior art announcement number CN208091272U discloses a boiler waste heat recovery device, including a waste heat recovery device body, an upper water cylinder and a lower water cylinder are arranged inside the waste heat recovery device body, and a uniformly distributed hot water absorption pipe is arranged between the upper water cylinder and the lower water cylinder, and the upper end of the waste heat recovery device body is provided with a symmetrically installed flue gas inlet end and a flue gas outlet end, a middle partition is provided between the upper water cylinder and the waste heat recovery device body, and a middle partition is also provided between the upper water cylinder and the lower water cylinder, and a circumferential partition is provided between the hot water absorption pipe close to the waste heat recovery device body and the waste heat recovery device body, and a guide plate is provided on one side of the waste heat recovery device body close to the lower water cylinder, the upper water cylinder is connected to the water outlet, and the lower water cylinder is connected to the water inlet. The device can fully recover the heat in the flue gas discharged from the boiler, reduce energy waste, and have high heat recovery efficiency.

[0004] However, during the use of the device, some impurities in the flue gas adhere to the outer wall of the hot water absorption pipe. After long-term use, a thick layer of impurities accumulates on the outer wall of the hot water absorption pipe, affecting the heat exchange efficiency. The existing waste heat recovery device does not have a structure for cleaning the hot water absorption pipe, which is inconvenient to use and has low practicality. Therefore, a waste heat recovery device for a heating boiler is proposed to solve the above problems. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a waste heat recovery device for a heating boiler, which has the advantages of being easy to clean. It solves the problem that after long-term use, a thick layer of impurities accumulates on the outer wall of the hot water absorption pipe, affecting the heat exchange efficiency. The existing waste heat recovery device does not have a structure for cleaning the hot water absorption pipe, which makes it inconvenient to use.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a waste heat recovery device for a heating boiler, comprising a recovery box, one side of the recovery box being fixedly connected to a smoke inlet pipe, the other side of the recovery box being fixedly connected to a smoke outlet pipe, a heat exchange tube being fixedly installed inside the recovery box, and a cleaning assembly being provided on the outside of the heat exchange tube;

[0007] The cleaning assembly includes a mounting plate arranged inside the recovery box, a plurality of scraper rings sleeved on the outer wall of the heat exchange tube are fixedly connected to the outer side of the mounting plate, and a lifting mechanism is provided on the upper side of the mounting plate;

[0008] The lifting mechanism includes an installation box, a driving motor is fixedly installed on the upper side of the installation box, a screw rod is fixedly installed on the output shaft of the driving motor, the outer side of the screw rod is threadedly connected to a threaded sleeve, the outer side of the threaded sleeve is fixedly connected to a connecting rod, the lower side of the connecting rod is fixedly connected to a vertical rod, the vertical rod extends to the interior of the recovery box and is fixedly connected to the mounting plate.

[0009] Furthermore, a water inlet joint is fixedly installed on one side of the recovery box, and a water outlet joint is fixedly installed on the other side of the recovery box.

[0010] Furthermore, one end of the heat exchange tube is connected to the water inlet joint, and the other end of the heat exchange tube is connected to the water outlet joint.

[0011] Furthermore, the lower portion of the recovery box is in the shape of a bamboo hat, and a collecting pipe is fixedly connected to the bottom of the recovery box, and a threaded cover is threadedly connected to the lower end of the collecting pipe.

[0012] Furthermore, the installation box is fixedly installed on the top of the recovery box, the screw rod is located inside the installation box, and the lower end of the screw rod is connected to the inner wall of the installation box through a bearing.

[0013] Furthermore, the number of the connecting rods and the vertical rods are both two, and they are respectively located on the left and right sides of the installation box.

[0014] Furthermore, strip-shaped openings are provided on both the left and right sides of the installation box, and the connecting rod passes through the inner side of the strip-shaped opening, and the connecting rod and the inner side of the strip-shaped opening are slidably matched.

[0015] Compared with the prior art, the present invention provides a waste heat recovery device for a heating boiler, which has the following beneficial effects:

[0016] 1. The waste heat recovery device for the heating boiler can drive the installation plate to move by starting the driving motor, and the installation plate will drive the scraper ring to move up and down along the outer wall of the heat exchange tube, so that the scraper ring can scrape off the dust and impurities attached to the outer wall of the heat exchange tube, thereby cleaning most positions of the heat exchange tube, ensuring the heat exchange efficiency of the heat exchange tube, and solving the problem that after long-term use, a thick layer of impurities accumulates on the outer wall of the hot water absorption tube, affecting the heat exchange efficiency. The existing waste heat recovery device does not have a structure for cleaning the hot water absorption tube, which is inconvenient to use.

[0017] 2. The heating boiler uses a waste heat recovery device. The scraped dust falls into the collection pipe at the bottom of the recovery box. The threaded cover can be turned to open the collection pipe, thereby discharging the dust and impurities inside the collection pipe, making cleaning easy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a cross-sectional view of the structure of the utility model;

[0019] Figure 2 This is a sectional view of the structure of the installation box of the utility model;

[0020] Figure 3 This is a front view of the structure of the utility model;

[0021] Figure 4 This is a structural stereogram of the mounting plate and scraper ring of the utility model.

[0022] In the figure: 1. Recovery box; 2. Smoke inlet pipe; 3. Smoke outlet pipe; 4. Water inlet joint; 5. Water outlet joint; 6. Heat exchange tube; 7. Mounting plate; 8. Scraper ring; 9. Mounting box; 10. Drive motor; 11. Screw; 12. Threaded sleeve; 13. Connecting rod; 14. Strip mouth; 15. Vertical rod; 16. Collection pipe; 17. Threaded cover. DETAILED DESCRIPTION

[0023] 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.

[0024] Example 1:

[0025] See also Figures 1 to 4In this embodiment, a waste heat recovery device for a heating boiler includes a recovery box 1, one side of the recovery box 1 is fixedly connected to a smoke inlet pipe 2, the other side of the recovery box 1 is fixedly connected to a smoke outlet pipe 3, and a heat exchange tube 6 is fixedly installed inside the recovery box 1, wherein a water inlet joint 4 is fixedly installed on one side of the recovery box 1, and a water outlet joint 5 is fixedly installed on the other side of the recovery box 1, one end of the heat exchange tube 6 is connected to the water inlet joint 4, and the other end of the heat exchange tube 6 is connected to the water outlet joint 5.

[0026] In this embodiment, a cleaning assembly is provided on the outside of the heat exchange tube 6, and the cleaning assembly includes a mounting plate 7 arranged inside the recovery box 1, and a plurality of scraping rings 8 that are sleeved on the outer wall of the heat exchange tube 6 are fixedly connected to the outside of the mounting plate 7.

[0027] In this embodiment, a lifting mechanism is provided on the upper side of the mounting plate 7, and the lifting mechanism includes a mounting box 9, which is fixedly mounted on the top of the recycling box 1. A driving motor 10 is fixedly mounted on the upper side of the mounting box 9, and a screw rod 11 is fixedly mounted on the output shaft of the driving motor 10. The screw rod 11 is located inside the mounting box 9, and the lower end of the screw rod 11 is connected to the inner wall of the mounting box 9 through a bearing. The outer side of the screw rod 11 is threadedly connected to a threaded sleeve 12, and the outer side of the threaded sleeve 12 is fixedly connected to a connecting rod 13. The lower side of the connecting rod 13 is fixedly connected to a vertical rod 15, which extends to the interior of the recycling box 1 and is fixedly connected to the mounting plate 7.

[0028] Among them, the number of connecting rods 13 and vertical rods 15 are both two, and they are respectively located on the left and right sides of the installation box 9. A strip opening 14 is opened on both sides of the installation box 9. The connecting rod 13 passes through the inner side of the strip opening 14, and the connecting rod 13 slides with the inner side of the strip opening 14.

[0029] Example 2:

[0030] See also Figure 1 On the basis of embodiment 1, the lower part of the recycling box 1 is in the shape of a bamboo hat, and the bottom of the recycling box 1 is also fixedly connected to a collection pipe 16, and the lower end of the collection pipe 16 is threadedly connected to a threaded cover 17. The cleaned dust and impurities fall into the collection pipe 16 at the bottom of the recycling box 1. The threaded cover 17 can be rotated to open the collection pipe 16, thereby discharging the dust and impurities inside the collection pipe 16, which facilitates cleaning.

[0031] The working principle of the above embodiment is:

[0032] When the utility model is in use, the driving motor 10 is started to drive the screw rod 11 to rotate, and the screw rod 11 will drive the threaded sleeve 12 to move up and down, and drive the connecting rod 13 to move along the inner side of the strip-shaped opening 14, and at the same time drive the vertical rod 15 to move, and drive the mounting plate 7 to move, and the mounting plate 7 will drive the scraper ring 8 to move up and down along the outer wall of the heat exchange tube 6, so that the scraper ring 8 can scrape off the dust and impurities attached to the outer wall of the heat exchange tube 6, thereby cleaning most positions of the heat exchange tube 6 and ensuring the heat exchange efficiency of the heat exchange tube 6. The scraped dust falls into the collection tube 16 at the bottom of the recovery box 1, and the threaded cover 17 can be rotated to open the collection tube 16, so that the dust and impurities inside the collection tube 16 can be discharged, which is convenient for cleaning.

[0033] The installation method, connection method or setting method disclosed in this embodiment are all common mechanical methods, and can be implemented as long as they can achieve their beneficial effects. In addition, the electrical components appearing in the text are all electrically connected to the main controller and the power supply. The main controller is a conventional known device, and the existing power connection technology is disclosed. Therefore, the specific structural composition and working principle of the main controller will not be described in detail in this text.

[0034] It should be noted that in this article, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on this application.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0036] 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste heat recovery device for a heating boiler, comprising a recovery box (1), a smoke inlet pipe (2) fixedly connected to one side of the recovery box (1), a smoke outlet pipe (3) fixedly connected to the other side of the recovery box (1), a heat exchange tube (6) fixedly installed inside the recovery box (1), characterized in that: A cleaning component is provided on the outer side of the heat exchange tube (6); The cleaning assembly comprises a mounting plate (7) arranged inside the recovery box (1), a plurality of scraper rings (8) sleeved on the outer wall of the heat exchange tube (6) are fixedly connected to the outer side of the mounting plate (7), and a lifting mechanism is provided on the upper side of the mounting plate (7); The lifting mechanism comprises an installation box (9), a driving motor (10) is fixedly installed on the upper side of the installation box (9), a screw rod (11) is fixedly installed on the output shaft of the driving motor (10), the outer side of the screw rod (11) is threadedly connected to a threaded sleeve (12), the outer side of the threaded sleeve (12) is fixedly connected to a connecting rod (13), the lower side of the connecting rod (13) is fixedly connected to a vertical rod (15), and the vertical rod (15) extends into the interior of the recovery box (1) and is fixedly connected to the installation plate (7).

2. The waste heat recovery device for a heating boiler according to claim 1, characterized in that: A water inlet joint (4) is fixedly mounted on one side of the recovery box (1), and a water outlet joint (5) is fixedly mounted on the other side of the recovery box (1).

3. The waste heat recovery device for a heating boiler according to claim 2, characterized in that: One end of the heat exchange tube (6) is connected to the water inlet joint (4), and the other end of the heat exchange tube (6) is connected to the water outlet joint (5).

4. The waste heat recovery device for a heating boiler according to claim 1, characterized in that: The lower portion of the recovery box (1) is in the shape of a bamboo hat, and the bottom of the recovery box (1) is also fixedly connected to a collection pipe (16), and the lower end of the collection pipe (16) is threadedly connected to a threaded cover (17).

5. The waste heat recovery device for a heating boiler according to claim 1, characterized in that: The installation box (9) is fixedly installed on the top of the recovery box (1), the screw rod (11) is located inside the installation box (9), and the lower end of the screw rod (11) is connected to the inner wall of the installation box (9) through a bearing.

6. The waste heat recovery device for a heating boiler according to claim 1, characterized in that: The number of the connecting rods (13) and the vertical rods (15) are both two, and they are respectively located on the left and right sides of the installation box (9).

7. The waste heat recovery device for a heating boiler according to claim 1, characterized in that: The left and right sides of the installation box (9) are both provided with strip-shaped openings (14), the connecting rod (13) passes through the inner side of the strip-shaped opening (14), and the connecting rod (13) is slidably matched with the inner side of the strip-shaped opening (14).

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