Smoke exhaust structure of boiler

Abstract

The utility model belongs to the field of smoke exhaust structures, and particularly relates to a smoke exhaust structure of a boiler, which comprises a smoke exhaust pipe, a heat exchange pipe is arranged in the smoke exhaust pipe, a water inlet pipe is fixedly connected to the outer side of a lower end pipe orifice of the heat exchange pipe, and a water drainage pipe is fixedly connected to the outer side of an upper end pipe orifice of the heat exchange pipe. A heat preservation pipe is fixedly connected to the outer side of the water drainage pipe, a connecting ring is slidably connected to the interior of the smoke exhaust pipe, a quick release mechanism is arranged in the connecting ring, a fan is fixedly connected to the lower end of the connecting ring, and four evenly-distributed supports are fixedly connected to the upper end of the connecting ring. The upper ends of the four supports are jointly and fixedly connected with a pipe cap. The heat exchange pipe, the water inlet pipe, the heat preservation pipe and other structures are additionally arranged in the smoke exhaust pipe, in the process that the smoke exhaust pipe exhausts smoke, heat exchange can be conducted on water flow flowing in the smoke exhaust pipe through the heat exchange pipe, and therefore residual heat in the smoke can be absorbed and recycled, and energy waste can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke exhaust structures, in particular to a smoke exhaust structure of a boiler. 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 combustion process of the boiler, flue gas is generated, and the flue gas can be discharged through the exhaust structure. However, the exhaust structure in the prior art needs to be drained by a fan during the exhaust process to effectively ensure the exhaust efficiency. However, after long-term use, the outside of the fan is prone to absorb too much dust, affecting the normal operation of the fan. It needs to be disassembled and cleaned regularly, but the fan installed by bolts is inconvenient to disassemble, which affects the normal use of the fan. In addition, during the exhaust process, a large amount of heat remains inside the flue gas, which causes energy waste during the exhaust. Therefore, it is necessary to improve the prior art. Utility Model Content

[0003] The utility model aims to provide a smoke exhaust structure of a boiler, which solves the problem of inconvenient disassembly of a fan and waste of heat inside the smoke.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a smoke exhaust structure of a boiler, comprising a smoke exhaust pipe, a heat exchange pipe is arranged inside the smoke exhaust pipe, a water inlet pipe is fixedly connected to the outer side of the lower end pipe mouth of the heat exchange pipe, a drain pipe is fixedly connected to the outer side of the upper end pipe mouth of the heat exchange pipe, an insulation pipe is fixedly connected to the outer side of the drain pipe, a connecting ring is slidably connected to the inside of the smoke exhaust pipe, a quick-release mechanism is arranged inside the connecting ring, a fan is fixedly connected to the lower end of the connecting ring, four evenly distributed brackets are fixedly connected to the upper end of the connecting ring, and a pipe cap is fixedly connected to the upper ends of the four brackets.

[0005] Preferably, the water inlet pipe is fixedly connected to the smoke exhaust pipe, and the water discharge pipe is fixedly connected to the smoke exhaust pipe, and the water inlet pipe can supply water to the interior of the heat exchange tube.

[0006] Preferably, the insulation pipe is fixedly connected to the smoke exhaust pipe, and the insulation pipe is made of a flame-retardant foam material, and the insulation pipe can insulate the drain pipe.

[0007] Preferably, the fan is slidably connected to the smoke exhaust pipe, and protective nets are fixedly connected to the interiors of upper and lower ends of the fan, and the protective nets can protect the fan.

[0008] Preferably, the quick-release mechanism includes a moving rod, and two symmetrically distributed moving rods are slidably connected inside the connecting ring. One end of the moving rod close to the smoke exhaust pipe is fixedly connected to a limiting block, and the limiting block is slidably connected to both the connecting ring and the smoke exhaust pipe. A spring is provided on the outside of the moving rod, and a pull ring is fixedly connected to the end of the moving rod away from the limiting block, and the limiting block can limit the connecting ring.

[0009] Preferably, one end of the spring is fixedly connected to the connecting ring, the other end of the spring is fixedly connected to the limiting block, the pull ring is in contact with the connecting ring, and the spring can drive the limiting block to automatically reset through elastic force.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] 1. The utility model adds structures such as heat exchange pipes, water inlet pipes and heat preservation pipes inside the smoke exhaust pipe. In the process of exhausting smoke from the smoke exhaust pipe, the heat exchange pipe can be used to exchange heat with the water flowing inside, so that the residual heat inside the smoke can be absorbed and reused, which can reduce energy waste.

[0012] 2. The utility model adds structures such as a limit block, a spring and a movable rod inside the connecting ring. During use, the limit block can be driven by the elastic force of the spring to slide into the interior of the smoke exhaust pipe to limit the connecting ring. When the fan needs to be cleaned, the limit block only needs to be separated from the smoke exhaust pipe to release the limit on the connecting ring. Then the connecting ring and the fan can be conveniently taken out from the interior of the smoke exhaust pipe, thereby making the fan easier to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0014] Figure 2 For the utility model Figure 1 A three-dimensional cross-sectional view of

[0015] Figure 3 For the utility model Figure 2 A front enlarged cross-sectional view of a local structure;

[0016] Figure 4 For the utility model Figure 3 A-section structure enlarged view.

[0017] In the figure: 1. exhaust pipe; 2. heat exchange pipe; 3. water inlet pipe; 4. drain pipe; 5. insulation pipe; 6. connecting ring; 7. quick release mechanism; 8. fan; 9. bracket; 10. pipe cap; 11. protective net; 71. moving rod; 72. limit block; 73. spring; 74. pull ring. DETAILED DESCRIPTION

[0018] 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 in 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.

[0019] See also Figure 1 , Figure 2 , Figure 3 A smoke exhaust structure of a boiler comprises a smoke exhaust pipe 1, a heat exchange pipe 2 is arranged inside the smoke exhaust pipe 1, a water inlet pipe 3 is fixedly connected to the outer side of the lower end pipe mouth of the heat exchange pipe 2, a drain pipe 4 is fixedly connected to the outer side of the upper end pipe mouth of the heat exchange pipe 2, an insulation pipe 5 is fixedly connected to the outer side of the drain pipe 4, a connecting ring 6 is slidably connected to the inside of the smoke exhaust pipe 1, a quick release mechanism 7 is arranged inside the connecting ring 6, a fan 8 is fixedly connected to the lower end of the connecting ring 6, four evenly distributed brackets 9 are fixedly connected to the upper end of the connecting ring 6, and a pipe cap 10 is fixedly connected to the upper ends of the four brackets 9.

[0020] See also Figure 1 , Figure 2 , Figure 3 The water inlet pipe 3 is fixedly connected to the smoke exhaust pipe 1, the drain pipe 4 is fixedly connected to the smoke exhaust pipe 1, the water inlet pipe 3 can supply water to the inside of the heat exchange tube 2, the insulation pipe 5 is fixedly connected to the smoke exhaust pipe 1, the insulation pipe 5 is made of flame-retardant foam material, the insulation pipe 5 can insulate the drain pipe 4, the fan 8 is slidably connected to the smoke exhaust pipe 1, and the upper and lower ends of the fan 8 are fixedly connected with a protective net 11, which can protect the fan 8.

[0021] See also Figure 1 , Figure 3 , Figure 4 The quick-release mechanism 7 includes a moving rod 71, and two symmetrically distributed moving rods 71 ​​are slidably connected inside the connecting ring 6. The end of the moving rod 71 close to the smoke exhaust pipe 1 is fixedly connected to a limiting block 72, and the limiting block 72 is slidably connected to the connecting ring 6 and the smoke exhaust pipe 1. A spring 73 is provided on the outer side of the moving rod 71, and a pull ring 74 is fixedly connected to the end of the moving rod 71 away from the limiting block 72. The limiting block 72 can limit the connecting ring 6, one end of the spring 73 is fixedly connected to the connecting ring 6, and the other end of the spring 73 is fixedly connected to the limiting block 72. The pull ring 74 contacts the connecting ring 6, and the spring 73 can drive the limiting block 72 to automatically reset through elastic force.

[0022] The specific implementation process of the utility model is as follows: when in use, the water inlet pipe 3 supplies water to the inside of the heat exchange tube 2. When the smoke enters the inside of the exhaust pipe 1, the heat in the smoke is exchanged with the water flow in the heat exchange tube 2. After the exchange is completed, the drain pipe 4 can be discharged into the inside of the boiler, so that the water flow can be preheated, which can effectively reduce the heat loss;

[0023] When the fan 8 needs to be cleaned, the pull ring 74 is pulled, and the pull ring 74 drives the limit block 72 to move through the moving rod 71, and compresses the spring 73. When the limit block 72 is separated from the smoke exhaust pipe 1, the limit on the connecting ring 6 can be released, and then the connecting ring 6 and the fan 8 can be easily taken out from the inside of the smoke exhaust pipe 1.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A smoke exhaust structure for a boiler, comprising a smoke exhaust pipe (1), characterized in that: A heat exchange tube (2) is arranged inside the smoke exhaust pipe (1), a water inlet pipe (3) is fixedly connected to the outer side of the lower end of the heat exchange tube (2), a drainage pipe (4) is fixedly connected to the outer side of the upper end of the heat exchange tube (2), an insulation pipe (5) is fixedly connected to the outer side of the drainage pipe (4), a connecting ring (6) is slidably connected inside the smoke exhaust pipe (1), a quick release mechanism (7) is arranged inside the connecting ring (6), a fan (8) is fixedly connected to the lower end of the connecting ring (6), four evenly distributed brackets (9) are fixedly connected to the upper end of the connecting ring (6), and a pipe cap (10) is fixedly connected to the upper ends of the four brackets (9).

2. A smoke exhaust structure for a boiler according to claim 1, characterized in that: The water inlet pipe (3) is fixedly connected to the smoke exhaust pipe (1), and the water discharge pipe (4) is fixedly connected to the smoke exhaust pipe (1).

3. The smoke exhaust structure of a boiler according to claim 1, characterized in that: The thermal insulation pipe (5) is fixedly connected to the smoke exhaust pipe (1), and the thermal insulation pipe (5) is made of flame-retardant foam material.

4. The smoke exhaust structure of a boiler according to claim 1, characterized in that: The fan (8) is slidably connected to the smoke exhaust pipe (1), and protective nets (11) are fixedly connected inside the upper and lower ends of the fan (8).

5. The smoke exhaust structure of a boiler according to claim 1, characterized in that: The quick-release mechanism (7) comprises a moving rod (71), two symmetrically distributed moving rods (71) are slidably connected inside the connecting ring (6), one end of the moving rod (71) close to the smoke exhaust pipe (1) is fixedly connected to a limiting block (72), the limiting block (72) is slidably connected to both the connecting ring (6) and the smoke exhaust pipe (1), a spring (73) is arranged on the outside of the moving rod (71), and one end of the moving rod (71) away from the limiting block (72) is fixedly connected to a pull ring (74).

6. A smoke exhaust structure for a boiler according to claim 5, characterized in that: One end of the spring (73) is fixedly connected to the connecting ring (6), the other end of the spring (73) is fixedly connected to the limiting block (72), and the pull ring (74) is in contact with the connecting ring (6).

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