Boiler flue gas waste heat recovery device

Abstract

The utility model relates to the technical field of waste heat recovery, in particular to a boiler flue gas waste heat recovery device which comprises a waste heat recovery box, one side of the waste heat recovery box is fixedly connected with a connector, a communicating pipe is installed on the lower surface of the waste heat recovery box, a coil pipe is installed inside the waste heat recovery box, the communicating pipe is communicated with the coil pipe, and the connector is fixedly connected with the connector. A support is fixedly connected to one side of the waste heat recovery box, a cleaning device is arranged on the surface of the waste heat recovery box and comprises an air pump, the air pump is located above the waste heat recovery box, the output end of the air pump is fixedly connected with an n-shaped guide pipe, and the end, away from the air pump, of the guide pipe extends into the waste heat recovery box. The cleaning device further comprises a mounting frame, and the mounting frame is placed on the surface of the waste heat recovery box. By means of the cleaning device, soot accumulated in the equipment can be cleaned conveniently, the production efficiency of the equipment is improved, heat waste is reduced, and the equipment is convenient to popularize and use.

Description

Technical Field

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

[0002] A boiler is an energy conversion device. The energy input to the boiler includes chemical energy and electrical energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. During the operation of the boiler, the flue gas generated by the boiler contains a large amount of heat. Directly discharging it will cause a huge waste of energy. Therefore, boiler flue gas waste heat recovery devices have gradually appeared.

[0003] The inventors have found in their daily work that after most boiler flue gas waste heat recovery devices have been used for a period of time, soot adheres to the surface of the internal coils, affecting the heating effect, causing low working efficiency of the equipment, resulting in heat waste and increasing economic losses for users. Improvements are needed. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that most boiler flue gas waste heat recovery devices in the prior art have soot attached to the surface of the internal coil after being used for a period of time, which affects the heating effect, causes low working efficiency of the equipment, causes heat waste, and increases economic losses for users. A boiler flue gas waste heat recovery device is proposed to solve the problem that most boiler flue gas waste heat recovery devices in the prior art have soot attached to the surface of the internal coil, which affects the heating effect, causes low working efficiency of the equipment, causes heat waste, and increases economic losses for users.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a boiler flue gas waste heat recovery device, including a waste heat recovery box, one side of the waste heat recovery box is fixedly connected with an interface, the lower surface of the waste heat recovery box is installed with a connecting pipe, the interior of the waste heat recovery box is installed with a coil, the connecting pipe is connected with the coil, one side of the waste heat recovery box is fixedly connected with a bracket, the surface of the waste heat recovery box is provided with a cleaning device, the cleaning device includes an air pump, the air pump is located above the waste heat recovery box, the output end of the air pump is fixedly connected with an n-shaped conduit, the end of the conduit away from the air pump extends into the waste heat recovery box, through the cleaning device, it is convenient to clean the smoke ash accumulated inside the equipment, improve the production efficiency of the equipment, reduce heat waste, and facilitate the popularization of the equipment. The interior of the nozzle corresponds to the internal coil through the nozzle, so the nozzle above the coil can blow off the dust when it is in use.

[0006] Preferably, the cleaning device further comprises a mounting frame, the mounting frame is placed on the surface of the waste heat recovery box, and the air pump is installed on the upper surface of the mounting frame.

[0007] Preferably, the longitudinal section of the mounting frame is L-shaped, and a handle is fixedly connected to one side of the mounting frame, so that the mounting frame and the air pump can be moved by pulling the handle.

[0008] Preferably, the conduit located in the waste heat recovery box is fixedly connected with a guide cover, and the lower surface of the guide cover is fixedly connected with a nozzle. When the equipment is in use, smoke enters from one interface and goes out from another interface. The hot smoke heats the coil in the waste heat recovery box, and the connecting pipe drives water to flow from the coil, and then the heated water is output to complete the waste heat recovery. After the equipment has been used for a period of time, soot adheres to the surface of the coil, affecting the heating effect, causing the equipment to have low working efficiency. At this time, the air pump is turned on, and then the handle is pulled to one side. The handle drives the mounting frame and the air pump to move. The air pump drives the guide cover to move through the conduit, and the guide cover continuously sprays gas into the waste heat recovery box through the nozzle. Since the vertical injection method is used to drive the airflow movement, the soot attached to the surface of the conduit can be blown off, and the fallen soot is discharged from another interface to ensure the normal operation of the equipment.

[0009] Preferably, the number of the connecting pipes is two, the two connecting pipes are symmetrically arranged, and both connecting pipes are provided with protective devices.

[0010] Preferably, the protective device includes a protective cover, which is located on the connecting pipe, an auxiliary rod is fixedly connected to the upper surface of the connecting pipe, a positioning hole is opened on the surface of the protective cover, one end of the auxiliary rod is inserted into the positioning hole, and a pull rod is fixedly connected to the upper surface of the protective cover. Through the protective device, the end of the connecting pipe is effectively protected, reducing the possibility of burns to staff when maintaining the equipment, thereby improving the safety of the equipment.

[0011] Preferably, two symmetrically arranged protrusions are fixedly connected to the surface of the connecting pipe, and two symmetrically arranged clamping strips are fixedly connected to the lower surface of the protective cover. When connecting the equipment to the water pipe, first align the positioning hole on the protective cover with the auxiliary rod, and then press the protective cover downward. While the auxiliary rod is inserted into the positioning hole, the protective cover drives the clamping strip to be clamped on the protrusion, thereby completing the positioning operation of the protective cover. When removing the protective cover, you only need to pull the pull rod upward.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, when the equipment is in use, the flue gas enters from one interface and goes out from another interface, the hot flue gas heats the coil in the waste heat recovery box, the connecting pipe drives the water to flow from the coil, and then the heated water is output to complete the waste heat recovery. After the equipment has been used for a period of time, the surface of the coil is attached with soot, which affects the heating effect and causes the equipment to work inefficiently. At this time, the air pump is turned on, and then the handle is pulled to one side, the handle drives the mounting frame and the air pump to move, the air pump drives the guide cover to move through the conduit, and the guide cover continuously sprays gas into the waste heat recovery box through the nozzle. Since the vertical injection method is used to drive the air flow movement, the soot attached to the surface of the conduit can be blown off, and the fallen soot is discharged from another interface to ensure the normal operation of the equipment. Through the cleaning device, it is convenient to clean the soot accumulated inside the equipment, improve the production efficiency of the equipment, reduce the waste of heat, and facilitate the popularization of the equipment.

[0014] 2. In the utility model, when connecting the equipment to the water pipe, first align the positioning hole on the protective cover with the auxiliary rod, then press the protective cover downward, and while the auxiliary rod is inserted into the positioning hole, the protective cover drives the card strip to be stuck on the protrusion to complete the positioning operation of the protective cover. When removing the protective cover, it is only necessary to pull the pull rod upward. Through the protective device, the end of the connecting pipe is effectively protected, reducing the possibility of scalding of staff when maintaining the equipment and improving the safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional structural schematic diagram of a boiler flue gas waste heat recovery device is proposed for the utility model;

[0016] Figure 2 The utility model proposes a boiler flue gas waste heat recovery device Figure 1 A schematic diagram of the structure at A;

[0017] Figure 3 The utility model provides a bottom-up structural schematic diagram of a boiler flue gas waste heat recovery device;

[0018] Figure 4 The utility model provides a structural schematic diagram of a cleaning device in a boiler flue gas waste heat recovery device;

[0019] Figure 5 The utility model provides a schematic diagram of the explosion structure of a protection device in a boiler flue gas waste heat recovery device.

[0020] Legend:

[0021] 1. Waste heat recovery box; 2. Interface; 3. Bracket; 4. Connecting pipe; 5. Cleaning device; 51. Handle; 52. Mounting frame; 53. Air pump; 54. Conduit; 55. Air guide cover; 56. Nozzle; 6. Protective device; 61. Protective cover; 62. Card strip; 63. Bump; 64. Pull rod; 65. Auxiliary rod; 66. Positioning hole. DETAILED DESCRIPTION

[0022] See also Figure 1-5 The utility model provides a technical solution: a boiler flue gas waste heat recovery device, comprising a waste heat recovery box 1, one side of the waste heat recovery box 1 is fixedly connected with an interface 2, a connecting pipe 4 is installed on the lower surface of the waste heat recovery box 1, a coil is installed inside the waste heat recovery box 1, the connecting pipe 4 is connected to the coil, one side of the waste heat recovery box 1 is fixedly connected with a bracket 3, and a cleaning device 5 is arranged on the surface of the waste heat recovery box 1, the cleaning device 5 comprises an air pump 53, the air pump 53 is located above the waste heat recovery box 1, an n-shaped conduit 54 is fixedly connected to the output end of the air pump 53, and the end of the conduit 54 away from the air pump 53 extends into the waste heat recovery box 1, through the cleaning device 5, it is convenient to clean the smoke accumulated inside the equipment, improve the production efficiency of the equipment, reduce the waste of heat, and facilitate the popularization of the equipment.

[0023] Specifically, the cleaning device 5 further includes a mounting frame 52 , which is placed on the surface of the waste heat recovery box 1 , and the air pump 53 is installed on the upper surface of the mounting frame 52 .

[0024] Specifically, the longitudinal section of the mounting frame 52 is L-shaped, and a handle 51 is fixedly connected to one side of the mounting frame 52, so that the mounting frame 52 and the air pump 53 can be moved by pulling the handle 51.

[0025] In this embodiment: the conduit 54 located in the waste heat recovery box 1 is fixedly connected to the guide cover 55, and the lower surface of the guide cover 55 is fixedly connected to the nozzle 56. When the equipment is in use, the smoke enters from one interface 2 and goes out from another interface 2. The hot smoke heats the coil in the waste heat recovery box 1, and the connecting pipe 4 drives the water to flow from the coil, and then the heated water is output to complete the waste heat recovery. After the equipment has been used for a period of time, the surface of the coil is attached with soot, which affects the heating effect and causes the equipment to have low working efficiency. At this time, the air pump 53 is turned on, and then the handle 51 is pulled to one side. The handle 51 drives the mounting frame 52 and the air pump 53 to move. The air pump 53 drives the guide cover 55 to move through the conduit 54. The guide cover 55 continuously sprays gas into the waste heat recovery box 1 through the nozzle 56. Since the vertical injection method is used to drive the air flow movement, the soot attached to the surface of the conduit 54 can be blown off, and the fallen soot is discharged from another interface 2 to ensure the normal operation of the equipment.

[0026] Specifically, there are two connecting pipes 4 , which are symmetrically arranged. Both connecting pipes 4 are provided with protective devices 6 .

[0027] In this embodiment: the protective device 6 includes a protective cover 61, the protective cover 61 is located on the connecting pipe 4, the upper surface of the connecting pipe 4 is fixedly connected with an auxiliary rod 65, a positioning hole 66 is opened on the surface of the protective cover 61, one end of the auxiliary rod 65 is inserted into the positioning hole 66, and the upper surface of the protective cover 61 is fixedly connected with a pull rod 64. Through the protective device 6, the end of the connecting pipe 4 is effectively protected, the risk of burns to staff when maintaining the equipment is reduced, and the safety of the equipment is improved.

[0028] Specifically, two symmetrically arranged protrusions 63 are fixedly connected to the surface of the connecting pipe 4, and two symmetrically arranged clamping strips 62 are fixedly connected to the lower surface of the protective cover 61. When connecting the equipment to the water pipe, first align the positioning hole 66 on the protective cover 61 with the auxiliary rod 65, and then press the protective cover 61 downward. While the auxiliary rod 65 is inserted into the positioning hole 66, the protective cover 61 drives the clamping strip 62 to be clamped on the protrusion 63, completing the positioning operation of the protective cover 61. When removing the protective cover 61, you only need to pull the pull rod 64 upward.

[0029] Working principle: When the equipment is in use, the flue gas enters from one interface 2 and exits from another interface 2. The hot flue gas heats the coil in the waste heat recovery box 1. The connecting pipe 4 drives the water to flow through the coil, and then the heated water is output to complete the waste heat recovery. After the equipment has been used for a period of time, soot adheres to the surface of the coil, affecting the heating effect, causing the equipment to work inefficiently. At this time, turn on the air pump 53, and then pull the handle 51 to one side. The handle 51 drives the mounting frame 52 and the air pump 53 to move. The air pump 53 drives the deflector 55 to move through the conduit 54. The deflector 55 continuously sprays gas into the waste heat recovery box 1 through the nozzle 56. Since the vertical injection method is used to drive the airflow movement, the smoke attached to the surface of the conduit 54 can be removed. The ash is blown off and discharged from another interface 2 to ensure the normal operation of the equipment. The cleaning device 5 is used to clean the accumulated ash inside the equipment, thereby improving the production efficiency of the equipment, reducing heat waste, and facilitating the popularization of the equipment. When connecting the equipment to the water pipe, first align the positioning hole 66 on the protective cover 61 with the auxiliary rod 65, and then press the protective cover 61 downward. While the auxiliary rod 65 is inserted into the positioning hole 66, the protective cover 61 drives the card strip 62 to be stuck on the protrusion 63 to complete the positioning operation of the protective cover 61. When removing the protective cover 61, it is only necessary to pull the pull rod 64 upward. Through the protective device 6, the end of the connecting pipe 4 is effectively protected, reducing the possibility of scalding of staff when maintaining the equipment and improving the safety of the equipment.

Claims

1. A boiler flue gas waste heat recovery device, comprising a waste heat recovery box (1), one side of the waste heat recovery box (1) is fixedly connected to an interface (2), a lower surface of the waste heat recovery box (1) is installed with a connecting pipe (4), a coil is installed inside the waste heat recovery box (1), the connecting pipe (4) is connected to the coil, and one side of the waste heat recovery box (1) is fixedly connected to a bracket (3), characterized in that: A cleaning device (5) is provided on the surface of the waste heat recovery box (1), and the cleaning device (5) comprises an air pump (53). The air pump (53) is located above the waste heat recovery box (1), and an n-shaped conduit (54) is fixedly connected to the output end of the air pump (53), and one end of the conduit (54) away from the air pump (53) extends into the waste heat recovery box (1).

2. A boiler flue gas waste heat recovery device according to claim 1, characterized in that: The cleaning device (5) further comprises a mounting frame (52), wherein the mounting frame (52) is placed on the surface of the waste heat recovery box (1), and the air pump (53) is mounted on the upper surface of the mounting frame (52).

3. A boiler flue gas waste heat recovery device according to claim 2, characterized in that: The longitudinal section of the mounting frame (52) is L-shaped, and a handle (51) is fixedly connected to one side of the mounting frame (52).

4. The boiler flue gas waste heat recovery device according to claim 1, characterized in that: The conduit (54) located in the waste heat recovery box (1) is fixedly connected to a flow guide cover (55), and a nozzle (56) is fixedly connected to the lower surface of the flow guide cover (55).

5. The boiler flue gas waste heat recovery device according to claim 1, characterized in that: The number of the connecting pipes (4) is two, the two connecting pipes (4) are symmetrically arranged, and the two connecting pipes (4) are both provided with a protective device (6).

6. A boiler flue gas waste heat recovery device according to claim 5, characterized in that: The protective device (6) comprises a protective cover (61), wherein the protective cover (61) is located on the connecting pipe (4), an auxiliary rod (65) is fixedly connected to the upper surface of the connecting pipe (4), a positioning hole (66) is opened on the surface of the protective cover (61), one end of the auxiliary rod (65) is inserted into the positioning hole (66), and a pull rod (64) is fixedly connected to the upper surface of the protective cover (61).

7. A boiler flue gas waste heat recovery device according to claim 6, characterized in that: The surface of the connecting pipe (4) is fixedly connected to two symmetrically arranged protrusions (63), and the lower surface of the protective cover (61) is fixedly connected to two symmetrically arranged clamping strips (62).

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