Combustion furnace waste heat recovery device

Abstract

The utility model relates to a combustion furnace waste heat recovery device, which belongs to the technical field of combustion furnace waste heat treatment and comprises a combustion furnace, a waste heat air pipe is arranged at the exhaust end of the combustion furnace, the other end of the waste heat air pipe is communicated with a heat preservation shell, and an exhaust mechanism is arranged in the heat preservation shell. The exhaust mechanism comprises a partition plate installed in the heat preservation shell, the partition plate divides the interior of the heat preservation shell into an upper box body and a lower box body, the interior of the upper box body is used for water injection, and the top of the partition plate communicates with a spiral hollow pipe. Hot air enters the spiral hollow pipe and pushes the rolling ball to roll in the spiral hollow pipe from bottom to top, if the combustion furnace works at a high speed, the rolling ball is pushed to the top end of the spiral hollow pipe by the hot air, so that the rolling ball extrudes the conical plug, and when the conical plug is extruded, the conical plug moves towards the outer side; the conical part of the conical plug moves towards the outer side of the spiral hollow pipe, a gap is reserved, air is exhausted, and the situation that the spiral hollow pipe explodes is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat treatment of combustion furnaces, and relates to a waste heat recovery device of a combustion furnace. Background Art

[0002] When the existing combustion furnace is in use, it is necessary to discharge the excess heat to prevent the combustion furnace from exploding. The exhaust heat will be directly discharged into the air, increasing the temperature of the surrounding environment and reducing the air humidity, which will cause certain harm to people and objects and aggravate the global warming phenomenon.

[0003] In order to solve the above problems, this application proposes a combustion furnace waste heat recovery device. Summary of the invention

[0004] The utility model aims at the technical problems existing in the prior art and provides a waste heat recovery device for a combustion furnace.

[0005] The technical solution of the present invention for solving the above-mentioned technical problems is as follows: a waste heat recovery device for a combustion furnace, comprising a combustion furnace, wherein an exhaust end of the combustion furnace is provided with a waste heat air duct, the other end of the waste heat air duct is connected to an insulation shell, an exhaust mechanism is provided inside the insulation shell, the exhaust mechanism comprises a partition installed inside the insulation shell, the partition divides the interior of the insulation shell into an upper box body and a lower box body, the interior of the upper box body is used for water injection, the top of the partition is connected to a spiral empty pipe, a rolling ball is rollingly installed inside the spiral empty pipe, a baffle is provided at the bottom of the spiral empty pipe, and an explosion-proof mechanism is provided at the front end of the spiral empty pipe.

[0006] The baffle is used to isolate the rolling ball from the lower box body, and the baffle is provided to prevent the rolling ball from sliding from the inside of the spiral hollow tube into the lower box body.

[0007] The explosion-proof mechanism includes a spring installed at the front end of the spiral empty tube, and a conical plug is installed at the other end of the spring. The conical portion of the conical plug is located inside the spiral empty tube, and the outer wall of the conical plug is adapted to the inside of the spiral empty tube. By setting the spring, the conical plug can be returned to its position when the rolling ball no longer pushes the conical plug.

[0008] The upper part of the spiral empty tube extends outside the heat-insulating shell, and the connection is a sealed connection. By arranging the upper part of the spiral empty tube to extend outside the heat-insulating shell, the discharge of gas can be ensured.

[0009] A one-way valve is arranged inside the waste heat air duct, and the one-way valve can prevent foreign matter from entering the combustion furnace.

[0010] The heat-insulating shell is provided with a steam outlet, and a steam engine is connected to the steam outlet. A generator is provided at the bottom of the steam engine. The steam engine is used to convert steam energy into mechanical energy, and the generator is used to convert mechanical energy into electrical energy.

[0011] A mounting frame is installed on the outer side of the combustion furnace, and the positions of the combustion furnace and the heat-insulating shell can be fixed by arranging the mounting frame.

[0012] The beneficial effects of this utility model are:

[0013] The hot gas enters the inside of the spiral tube, and the hot gas pushes the rolling ball to roll from bottom to top inside the spiral tube. If the combustion furnace is working at a high speed, the rolling ball will be pushed to the top of the spiral tube by the hot gas, so that the rolling ball squeezes the conical plug. When the conical plug is squeezed, it will move outward, so that the conical part of the conical plug moves to the outside of the spiral tube, leaving a gap to allow air to be discharged, thereby preventing the spiral tube from exploding.

[0014] When the combustion furnace works at a low speed, the rolling ball will be pushed into the inside of the spiral air tube by the hot air, and the air will not be discharged when the air pressure is not needed, ensuring that the heat will not be easily discharged and the water in the box on the insulation shell can be better heated, which can both play an explosion-proof role and reduce heat loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This utility model is used to show the main view structure schematic diagram;

[0016] Figure 2 This utility model is used to show the schematic diagram of the cross-sectional structure;

[0017] Figure 3 The present invention is to show the schematic diagram of the internal structure of the spiral air tube.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0019] 1. Combustion furnace; 2. Waste heat air duct; 3. Check valve; 4. Insulation shell; 5. Exhaust mechanism; 6. Steam engine; 7. Generator; 8. Mounting frame;

[0020] 51. Partition; 52. Spiral empty tube; 53. Baffle; 54. Rolling ball; 55. Spring; 56. Conical plug. DETAILED DESCRIPTION

[0021] 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.

[0022] like Figure 1-Figure 3 As shown, this embodiment provides a technical solution: a waste heat recovery device for a combustion furnace, including a combustion furnace 1, a waste heat air duct 2 is provided at the exhaust end of the combustion furnace 1, the other end of the waste heat air duct 2 is connected to an insulation shell 4, an exhaust mechanism 5 is provided inside the insulation shell 4, the exhaust mechanism 5 includes a partition 51 installed inside the insulation shell 4, the partition 51 divides the interior of the insulation shell 4 into an upper box body and a lower box body, the interior of the upper box body is used for water injection, the top of the partition 51 is connected to a spiral empty pipe 52, a rolling ball 54 is rollingly installed inside the spiral empty pipe 52, a baffle 53 is provided at the bottom of the spiral empty pipe 52, and an explosion-proof mechanism is provided at the front end of the spiral empty pipe 52, and the rolling ball 54 is pushed from bottom to top in the spiral empty pipe 52 by hot gas. The rolling ball 54 rolls at the top of the spiral empty tube 52 if the combustion furnace 1 is working at a high speed, and the rolling ball 54 will be pushed to the top of the spiral empty tube 52 by the hot gas, so that the rolling ball 54 squeezes the conical plug 56. When the conical plug 56 is squeezed, it will move outward, so that the conical part of the conical plug 56 moves to the outside of the spiral empty tube 52, leaving a gap to allow air to be discharged, thereby preventing the spiral empty tube 52 from exploding. If the combustion furnace 1 is working at a low speed, the rolling ball 54 will be pushed to the inside of the spiral empty tube 52 by the hot gas, and the air will not be discharged when the air pressure is not needed, thereby ensuring that the heat can not be easily discharged and the water in the upper box of the insulation shell 4 can be better heated, which can not only play an explosion-proof role but also reduce heat loss.

[0023] The above solution still has the problem that the rolling ball 54 may slide from the spiral hollow tube 52 into the lower box body. Figure 2-Figure 3 As shown: the baffle 53 is used to isolate the rolling ball 54 from the lower box body, the explosion-proof mechanism includes a spring 55 installed at the front end of the spiral empty tube 52, and a conical plug 56 is installed at the other end of the spring 55. The conical portion of the conical plug 56 is located inside the spiral empty tube 52, and the outer wall of the conical plug 56 is adapted to the inside of the spiral empty tube 52. The upper part of the spiral empty tube 52 extends outside the insulation shell 4, and the connection is a sealed connection. A one-way valve 3 is arranged inside the waste heat air duct 2, and the insulation shell 4 is provided with a steam outlet, and a steam engine 6 is connected to the steam outlet. A generator 7 is arranged at the bottom of the steam engine 6, and the steam engine 6 is used to convert steam energy into mechanical energy. The generator 7 is used to convert mechanical energy into electrical energy. A mounting frame 8 is installed on the outside of the combustion furnace 1. The baffle 53 is used to prevent the rolling ball 54 from sliding from the inside of the spiral empty tube 52 to the lower box body.

[0024] Working principle:

[0025] When the device is used, the waste heat discharged from the combustion furnace 1 can be recovered, and then the waste heat can be converted into electrical energy through the conversion of the steam engine 6 and the generator 7. When in use, the generator 7 can be connected to a battery, and the battery can be used to store the converted electrical energy;

[0026] When the one-way valve 3 is opened, the waste heat duct 2 is responsible for transmitting the waste heat to the lower box body of the insulation shell 4. At this time, the hot air enters the interior of the spiral empty tube 52, and the hot air pushes the rolling ball 54 to roll from bottom to top in the interior of the spiral empty tube 52. If the combustion furnace 1 is working at a high speed, the rolling ball 54 will be pushed to the top of the spiral empty tube 52 by the hot air, so that the rolling ball 54 squeezes the conical plug 56. When the conical plug 56 is squeezed, it will move outward, so that the conical part of the conical plug 56 moves to the outside of the spiral empty tube 52, leaving a gap for air to be discharged, thereby preventing the spiral empty tube 52 from exploding. If the combustion furnace 1 is working at a low speed, the rolling ball 54 will be pushed to the interior of the spiral empty tube 52 by the hot gas, and the air will not be discharged when the air pressure is not needed, thereby ensuring that the heat can not be easily discharged and the water in the upper box body of the insulation shell 4 can be better heated, which can not only play an explosion-proof role but also reduce heat loss.

[0027] Although the preferred embodiments of the present invention have been described, other changes and modifications may be made to these embodiments once those skilled in the art have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0028] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these modifications and variations.

Claims

1. A combustion furnace waste heat recovery device, comprising a combustion furnace (1), characterized in that: The exhaust end of the combustion furnace (1) is provided with a waste heat air duct (2), the other end of the waste heat air duct (2) is connected to a heat preservation shell (4), an exhaust mechanism (5) is provided inside the heat preservation shell (4), the exhaust mechanism (5) comprises a partition (51) installed inside the heat preservation shell (4), the partition (51) divides the interior of the heat preservation shell (4) into an upper box body and a lower box body, the interior of the upper box body is used for water injection, the top of the partition (51) is connected to a spiral empty pipe (52), a rolling ball (54) is rollingly installed inside the spiral empty pipe (52), a baffle (53) is provided at the bottom of the spiral empty pipe (52), and an explosion-proof mechanism is provided at the front end of the spiral empty pipe (52).

2. A combustion furnace waste heat recovery device according to claim 1, characterized in that: The baffle (53) is used to isolate the rolling ball (54) from the lower box.

3. The combustion furnace waste heat recovery device according to claim 1, characterized in that: The explosion-proof mechanism comprises a spring (55) installed at the front end of the spiral hollow tube (52), and a conical plug (56) is installed at the other end of the spring (55). The conical portion of the conical plug (56) is located inside the spiral hollow tube (52), and the outer wall of the conical plug (56) is adapted to the inside of the spiral hollow tube (52).

4. The combustion furnace waste heat recovery device according to claim 1, characterized in that: The upper part of the spiral hollow tube (52) extends outside the heat-insulating shell (4), and the connection is a sealed connection.

5. The combustion furnace waste heat recovery device according to claim 1, characterized in that: A one-way valve (3) is arranged inside the waste heat air duct (2).

6. The combustion furnace waste heat recovery device according to claim 1, characterized in that: The heat-insulating shell (4) is provided with a steam outlet, and a steam engine (6) is connected to the steam outlet. A generator (7) is provided at the bottom of the steam engine (6). The steam engine (6) is used to convert steam energy into mechanical energy, and the generator (7) is used to convert mechanical energy into electrical energy.

7. The combustion furnace waste heat recovery device according to claim 1, characterized in that: A mounting frame (8) is installed on the outer side of the combustion furnace (1).

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