A waste heat recovery device for a gas boiler

Abstract

The utility model belongs to gas boiler technical field, concretely relates to a waste heat recovery device of gas boiler, including boiler, the lower extreme fixed connection of boiler has the top block, the lower extreme fixed connection of top block has the base, the right side of boiler is provided with waste heat recovery mechanism, the left side of boiler is provided with end cover mechanism. The utility model discloses through the hot flue gas delivery to the inside of recovery box to the flue gas of particle impurity in the filter screen to the filtration, and the particle impurity of filtration falls and is collected to the inside of recovery hopper, and through the opening of discharge port discharges, and the hot flue gas of filtration is transported to the inside of conveying pipe through the connector, and through the conveying pipe is transported to the inside of boiler again, thereby reaches the effect of repeated use.

Description

Technical Field

[0001] This utility model relates to the field of gas boiler technology, specifically to a waste heat recovery device for a gas boiler. Background Technology

[0002] Gas-fired boilers include gas-fired hot water boilers, gas-fired hot water boilers, and gas-fired steam boilers. Among them, gas-fired hot water boilers are also called gas-fired heating boilers and gas-fired bathing boilers. As the name suggests, gas-fired boilers refer to boilers that use gas as fuel. Compared with oil-fired boilers and electric boilers, gas-fired boilers are the most economical, so most people choose gas-fired boilers for steam, heating, and bathing. Gas-fired boilers produce a large amount of heat when they are working.

[0003] Utility model patent CN218583193U discloses a waste heat recovery device for a gas-fired boiler, including a base, a gas-fired boiler, and a burner. The gas-fired boiler has a sealing door at its left end, and the burner is installed outside the sealing door. The gas-fired boiler is fixedly connected to the top of the base, and an exhaust pipe is fixedly connected to the top of the gas-fired boiler. A filter box is fixedly connected to the right side of the exhaust pipe, and a filter screen is installed inside the filter box. This waste heat recovery device for gas-fired boiler allows high-temperature airflow to enter the filter box directly through the air inlet pipe and into the air guide plate. After being diverted and guided by the air guide plate, the high-temperature airflow enters the heat-conducting pipe, which then assists in heating the materials inside the gas-fired boiler. This achieves the effect of recovering and reusing waste heat, replacing the traditional method of using a mixing duct to guide high-temperature flue gas for auxiliary fuel combustion in gas-fired boilers.

[0004] Currently, gas-fired boilers generate a large amount of hot flue gas during operation. The release of this hot flue gas into the air not only pollutes the air but also wastes a significant amount of heat. In addition, the end covers of gas-fired boilers are mostly directly installed, and the elastic fixing of the sealing device at the installation point affects the sealing effect. Utility Model Content

[0005] The purpose of this invention is to provide a waste heat recovery device for a gas-fired boiler, which solves the problems of recovering hot flue gas and securing the end cover.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a waste heat recovery device for a gas-fired boiler, comprising a boiler, a top block fixedly connected to the lower end of the boiler, a base fixedly connected to the lower end of the top block, a waste heat recovery mechanism provided on the right side of the boiler, and an end cover mechanism provided on the left side of the boiler.

[0007] Preferably, the waste heat recovery mechanism includes a recovery box, which is fixedly connected to the upper right side of the boiler. A filter screen is fixedly connected to the upper interior of the recovery box, and a flue gas inlet is fixedly connected to the left side of the recovery box.

[0008] Preferably, a recycling hopper is fixedly connected to the lower end of the recycling bin, a discharge port is fixedly connected to the lower end of the recycling hopper, and the flue gas inlet is fixedly connected to the upper right side of the boiler.

[0009] Preferably, a connector is fixedly connected to the upper right side of the recycling bin, a conveying pipe is fixedly connected to the lower end of the connector, and the lower left side of the conveying pipe is fixedly connected to the lower right side of the boiler.

[0010] Preferably, the end cover mechanism includes a frame, the frame is fixedly connected to the left side of the boiler, the end cover is fixedly connected to the left side of the boiler by multiple bolts, a limit block is fixedly connected to the right side of the end cover, an anti-detachment block is fixedly connected to the right side of the limit block, and a sealing block is slidably connected to the limit block.

[0011] Preferably, the limiting block is slidably connected to a spring, the left side of the spring is fixedly connected to the right side of the end cap, the right side of the spring is fixedly connected to the left side of the sealing block, and a handle is fixedly connected to the left side of the end cap.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model transports hot flue gas to the inside of the recovery box through the flue gas inlet, and then filters particulate impurities in the flue gas through the filter screen. The filtered particulate impurities fall and are collected inside the recovery hopper, and are discharged by opening the exhaust port. The filtered hot flue gas is transported to the inside of the conveying pipe through the connector, and then transported back to the inside of the boiler through the conveying pipe, thereby achieving the effect of repeated use.

[0014] 2. This utility model uses an end cap to connect a limiting block, which in turn connects to an anti-detachment block, to limit the sealing block and the spring. This allows the sealing block to be pushed by the spring and tightly sealed to the left side of the frame, thereby increasing the sealing effect and sealing stability. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of this utility model;

[0016] Figure 2 This is a partial sectional view of the overall structure of this utility model;

[0017] Figure 3 This is a partial three-dimensional structure of the present invention. Figure 1 ;

[0018] Figure 4This is a partial three-dimensional structure of the present invention. Figure 2 .

[0019] In the diagram: 1. Boiler; 2. Top block; 3. Base; 4. Waste heat recovery mechanism; 5. End cover mechanism; 41. Recovery box; 42. Filter screen; 43. Flue gas inlet; 44. Recovery hopper; 45. Discharge port; 46. Connector; 47. Conveying pipe; 51. Frame; 52. End cover; 53. Limiting block; 54. Anti-detachment block; 55. Sealing block; 56. Spring; 57. Handle. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 A waste heat recovery device for a gas-fired boiler includes a boiler 1. The boiler 1 is existing technology and will not be described in detail here. A top block 2 is fixedly connected to the lower end of the boiler 1, and a base 3 is fixedly connected to the lower end of the top block 2. The top block 2 and the base 3 support and limit the movement of the boiler 1. A waste heat recovery mechanism 4 is provided on the right side of the boiler 1, and an end cover mechanism 5 is provided on the left side of the boiler 1. This technical solution improves upon the problems mentioned in the background technology. Other technical problems of this technical solution are existing technologies and will not be described in detail here.

[0022] Please see Figure 1 , Figure 2 , Figure 4 The waste heat recovery mechanism 4 includes a recovery box 41. The recovery box 41 is fixedly connected to the upper right side of the boiler 1. The upper inside of the recovery box 41 is fixedly connected to a filter screen 42. The left side of the recovery box 41 is fixedly connected to a flue gas inlet 43. The lower end of the recovery box 41 is fixedly connected to a recovery hopper 44. The lower end of the recovery hopper 44 is fixedly connected to an exhaust port 45. The flue gas inlet 43 is fixedly connected through the upper right side of the boiler 1. The upper right side of the recovery box 41 is fixedly connected to a connector 46. The lower end of the connector 46 is fixedly connected to a pipe 47. The lower left end of the pipe 47 is fixedly connected through the lower right side of the boiler 1.

[0023] Please see Figure 1 , Figure 2 , Figure 3The end cover mechanism 5 includes a frame 51. The frame 51 is fixedly connected to the left side of the boiler 1. The frame 51 limits the right side of the sealing block 55. The left side of the boiler 1 is fixedly connected to the end cover 52 by multiple bolts. The right side of the end cover 52 is fixedly connected to a limiting block 53. The right side of the limiting block 53 is fixedly connected to an anti-detachment block 54. The anti-detachment block 54 limits the connection between the limiting block 53 and the sealing block 55 to prevent them from separating. The limiting block 53 is slidably connected to the sealing block 55. The limiting block 53 is slidably connected to a spring 56. The left side of the spring 56 is fixedly connected to the right side of the end cover 52, and the right side of the spring 56 is fixedly connected to the left side of the sealing block 55. The left side of the end cover 52 is fixedly connected to a handle 57. The handle 57 facilitates the handling and movement of the end cover mechanism 5.

[0024] The specific implementation process of this utility model is as follows: hot flue gas is transported to the inside of the recovery box 41 through the flue gas inlet 43, and then filtered through the filter screen 42. Then, particulate impurities move to the inside of the recovery hopper 44, and the impurities are discharged by opening the discharge port 45. Then, the filtered flue gas is transported back to the inside of the boiler 1 through the connector 46 and the conveying pipe 47 through the device in the prior art, so as to be reused.

[0025] When the end cap 52 is installed, the end cap 52 presses against the limiting block 53, and the limiting block 53 drives the sealing block 55 to move. Thus, through the setting of the spring 56, the sealing block 55 is tightly sealed against the left side of the frame 51, increasing the sealing effect. The end cap 52 can be installed by multiple bolts.

[0026] 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 waste heat recovery device for a gas-fired boiler, comprising a boiler (1), characterized in that: The lower end of the boiler (1) is fixedly connected to a top block (2), the lower end of the top block (2) is fixedly connected to a base (3), a waste heat recovery mechanism (4) is provided on the right side of the boiler (1), and an end cover mechanism (5) is provided on the left side of the boiler (1).

2. The waste heat recovery device for a gas-fired boiler according to claim 1, characterized in that: The waste heat recovery mechanism (4) includes a recovery box (41). The recovery box (41) is fixedly connected to the upper right side of the boiler (1). A filter screen (42) is fixedly connected to the upper inside of the recovery box (41). A flue gas inlet (43) is fixedly connected to the left side of the recovery box (41).

3. The waste heat recovery device for a gas-fired boiler according to claim 2, characterized in that: The lower end of the recycling bin (41) is fixedly connected to a recycling hopper (44), the lower end of the recycling hopper (44) is fixedly connected to a discharge port (45), and the flue gas inlet (43) is fixedly connected to the upper right side of the boiler (1).

4. The waste heat recovery device for a gas-fired boiler according to claim 2, characterized in that: A connector (46) is fixedly connected to the upper right side of the recycling bin (41), and a conveying pipe (47) is fixedly connected to the lower end of the connector (46). The lower left side of the conveying pipe (47) is fixedly connected to the lower right side of the boiler (1).

5. The waste heat recovery device for a gas-fired boiler according to claim 1, characterized in that: The end cover mechanism (5) includes a frame (51). The frame (51) is fixedly connected to the left side of the boiler (1). The end cover (52) is fixedly connected to the left side of the boiler (1) by multiple bolts. The end cover (52) is fixedly connected to the right side of the end cover (52). The anti-detachment block (54) is fixedly connected to the right side of the limit block (53). The limit block (53) is slidably connected to a sealing block (55).

6. The waste heat recovery device for a gas-fired boiler according to claim 5, characterized in that: The limiting block (53) is slidably connected to a spring (56), the left side of the spring (56) is fixedly connected to the right side of the end cap (52), the right side of the spring (56) is fixedly connected to the left side of the sealing block (55), and the left side of the end cap (52) is fixedly connected to a handle (57).

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