Boiler flue gas waste heat recovery mechanism

Abstract

The utility model discloses a boiler flue gas waste heat recovery mechanism, belongs to the technical field of boiler flue gas waste heat recovery, and solves the problems that when a flue gas recovery device recovers flue gas, the flue gas can directly enter the position of a discharge port through an inlet of the device, the recovered flue gas cannot be completely utilized, and the flue gas recovery efficiency is low. The device comprises a box body and a heat preservation cavity, the heat preservation cavity is formed in the box body, a mounting frame is fixedly mounted in the heat preservation cavity, a filter plate is arranged at the bottom of the mounting frame, a smoke inlet pipe and a smoke exhaust pipe are fixedly mounted at the upper end of the box body, and the smoke exhaust pipe is arranged on the right side of the mounting frame. And the smoke inlet pipe is arranged at the upper end of the mounting frame, the smoke inlet pipe and the smoke exhaust pipe are both communicated with the interior of the heat preservation cavity, smoke from the interior of the machine to the interior of the mounting frame can be slowly exhausted through the arranged heat preservation cavity, the temperature in the heat preservation cavity can be increased, and the utilization efficiency of the recycled smoke is improved.

Description

Technical Field

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

[0002] The flue gas generated when the boiler is burned is discharged through the chimney, and the temperature of the discharged flue gas is relatively high, and the flue gas still contains a large amount of heat energy, which can be recovered and utilized. After searching, the patent with the announcement number CN 220601543 U discloses a boiler flue gas waste heat recovery device, which relates to the technical field of flue gas waste heat recovery equipment, including a recovery unit and an air inlet opened at the input end of the recovery unit, and also includes a heat absorption unit arranged at the input part of the recovery unit, a filtering unit and a cleaning unit arranged in the recovery unit, and a discharge unit arranged at the output part of the recovery unit; the heat absorption unit includes an inlet pipe and an outlet pipe installed on the side wall of the input part of the recovery unit, and a serpentine heat exchange tube arranged between the inlet pipe and the outlet pipe for heat transfer. The utility model is a boiler flue gas waste heat recovery device, which can realize the convenient replacement of the filter screen during normal working process by setting the heat absorption unit and the filtering unit. However, when the flue gas recovery device recovers the flue gas, the flue gas will directly enter the position of the discharge port through the inlet of the device, and the recovered flue gas cannot be fully utilized, which reduces the use efficiency of the device. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a boiler flue gas waste heat recovery mechanism, which solves the problem that when the flue gas recovery device recovers the flue gas, the flue gas directly enters the discharge port through the inlet of the device, and the recovered flue gas cannot be fully utilized, thereby reducing the utilization efficiency of the device.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: a boiler flue gas waste heat recovery mechanism, comprising a box body and a heat preservation chamber, the heat preservation chamber is arranged inside the box body, a mounting frame is fixedly installed inside the heat preservation chamber, a filter plate is arranged at the bottom of the mounting frame, a smoke inlet pipe and a smoke exhaust pipe are respectively fixedly installed on the upper end of the box body, the smoke exhaust pipe is arranged on the right side of the mounting frame, and the smoke inlet pipe is arranged at the upper end of the mounting frame, the smoke inlet pipe and the smoke exhaust pipe are both connected with the interior of the heat preservation chamber, a plurality of heat absorbing bent pipes are arranged inside the mounting frame, the two ends of the heat absorbing bent pipes are horizontal, the two ends of the heat absorbing bent pipes respectively penetrate the side wall of the box body to the outside, and the pipe wall of the heat absorbing bent pipe is fixedly connected to the inside of the side wall of the box body.

[0005] Preferably, a convex plate is fixedly installed at the lower end of the filter plate, and exhaust pipes are fixedly installed at equal intervals inside the bottom surface of the convex plate. The exhaust pipes are curved pipes, and the exhaust ports of the exhaust pipes are located at the upper left end of the outside of the mounting frame, so that the smoke can be conveniently discharged to the left side inside the insulation chamber. Through cooperation with the installation machine, the exhaust rate of the smoke can be prevented from being too fast.

[0006] Preferably, a sealing groove is provided inside the front end side wall of the box body, and a sealing door is sealed inside the sealing groove. The upper end and the rear end side wall of the mounting frame are fixedly connected to the side wall of the insulation chamber, and the front end side wall of the mounting frame and the convex plate are parallel to the side wall in the sealing groove, and the front end side wall of the mounting frame and the convex plate are sealed to the front end side wall of the sealing door, thereby preventing smoke from being directly discharged through the interior of the convex plate.

[0007] Preferably, threaded holes are symmetrically arranged inside the side walls on both sides of the sealing groove, and fixing bolts are threadedly connected inside the two sides of the sealing door. The fixing bolts are connected to the inside of the threaded holes by passing through the internal threads of the sealing door, so that the sealing door can be installed more securely.

[0008] Preferably, a drain port and a water inlet are respectively provided at the two ends of the heat absorption bent pipe, and the water inlet is provided at the upper end of the drain port. Valves are fixedly installed in the pipes of the drain port and the water inlet, so as to facilitate water injection and drainage inside the heat absorption bent pipe.

[0009] Preferably, a handle is fixedly mounted on the front side wall of the sealed door, so as to facilitate the taking of the sealed door.

[0010] The utility model provides a boiler flue gas waste heat recovery mechanism, which has the following beneficial effects:

[0011] 1. When the boiler flue gas waste heat recovery mechanism is used, the flue gas from the machine to the mounting frame can be slowly discharged through the provided insulation chamber, so that the temperature in the insulation chamber can be increased, thereby enhancing the utilization efficiency of the recovered flue gas;

[0012] 2. This kind of boiler flue gas waste heat recovery mechanism, when using the boiler flue gas waste heat recovery mechanism, can conveniently discharge the flue gas exhausted through the mounting frame to the upper left end outside the mounting frame through the exhaust pipe, which can effectively slow down the rate at which the flue gas is discharged to the outside of the box. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 It is a side view of the utility model;

[0015] Figure 3 It is a schematic diagram of the internal structure of the utility model.

[0016] In the figure, 1-box, 2-smoke inlet pipe, 3-smoke exhaust pipe, 4-fixing bolt, 5-sealed door, 6-handle, 7-valve, 8-drain outlet, 9-water inlet, 10-heat absorbing elbow, 11-sealing groove, 12-insulation chamber, 13-mounting frame, 14-threaded hole, 15-filter plate, 16-exhaust pipe, 17-convex plate. DETAILED DESCRIPTION

[0017] 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.

[0018] Example 1

[0019] See also Figure 1-3The utility model provides a boiler flue gas waste heat recovery mechanism, including a box body 1 and a heat preservation chamber 12, the heat preservation chamber 12 is arranged inside the box body 1, a mounting frame 13 is fixedly installed inside the heat preservation chamber 12, a filter plate 15 is arranged at the bottom of the mounting frame 13, a smoke inlet pipe 2 and a smoke exhaust pipe 3 are respectively fixedly installed on the upper end of the box body 1, the smoke exhaust pipe 3 is arranged on the right side of the mounting frame 13, and the smoke inlet pipe 2 is arranged on the upper end of the mounting frame 13, and the smoke inlet pipe 2 and the smoke exhaust pipe 3 are both connected to the heat preservation chamber 12. The interior of the mounting frame 13 is connected, and a plurality of heat absorbing bent pipes 10 are arranged inside the mounting frame 13. The two ends of the heat absorbing bent pipes 10 are horizontal, and the two ends of the heat absorbing bent pipes 10 respectively penetrate the side wall of the box body 1 to the outside, and the pipe wall of the heat absorbing bent pipe 10 is fixedly connected to the inside of the side wall of the box body 1, and the smoke inlet pipe 2 is fixedly connected to the chimney of the boiler, so that the smoke discharged from the chimney enters between the mounting frame 13 through the smoke inlet pipe 2, and the incoming smoke can heat the heat absorbing bent pipe 10, and then the smoke passes through The filter plate 15 enters the interior of the heat preservation chamber 12, and a convex plate 17 is fixedly installed at the lower end of the filter plate 15, and an exhaust pipe 16 is fixedly installed at equal intervals inside the bottom surface of the convex plate 17. The exhaust pipe 16 is a curved pipe, and the exhaust port of the exhaust pipe 16 is at the upper left end of the outside of the mounting frame 13. The smoke passes through the filter plate 17 and enters the interior of the T-shaped plate 17, and enters the interior of the exhaust pipe 16 through the interior of the convex plate 17, so that the smoke can enter the upper left end of the mounting frame 13, which can slow down the exhaust rate of the smoke and accelerate the stability of the heat preservation chamber 12. The two ends of the heat absorption elbow 10 are respectively provided with a drain port 8 and a water inlet 9, and the water inlet 9 is arranged at the upper end of the drain port 8. The pipes of the drain port 8 and the water inlet 9 are fixedly installed with valves 7. The valve 7 on the water inlet 9 is opened, and water is injected into the interior of the heat absorption elbow 10 through the water inlet 9, and the recovered smoke is heated. After heating, the valve 7 on the drain port 8 is opened to discharge the water.

[0020] Example 2

[0021] In this embodiment, Figure 1-3As shown, a sealing groove 11 is provided inside the front end side wall of the box body 1, and a sealing door 5 is sealed inside the sealing groove 11. A handle 6 is fixedly installed on the front end side wall of the sealing door 5. The upper end and the rear end side wall of the mounting frame 13 are fixedly connected to the side wall of the heat preservation chamber 12. The front end side wall of the mounting frame 13 and the convex plate 17 are both horizontal with the side wall in the sealing groove 11, and the front end side wall of the mounting frame 13 and the convex plate 17 are sealed with the front end side wall of the sealing door 5. By setting the sealing door 5, the interior of the mounting frame 13 and the convex plate 17 can be conveniently sealed, which can prevent the smoke discharged through the mounting frame 13 from directly entering the heat preservation chamber 12. Entering into the interior of the cavity 12 and opening the sealing door 5 at the same time can conveniently clean the interior of the box 1, the mounting frame 13 and the convex plate 17. The inside of the side walls on both sides of the sealing groove 11 are symmetrically provided with threaded holes 14, and the inside of the two sides of the sealing door 5 are threadedly connected with fixing bolts 4. The fixing bolts 4 are connected to the inside of the threaded holes 14 by passing through the internal threads of the sealing door 5. When installing the sealing plate 5, the sealing door 5 is sealed and connected to the inside of the sealing groove 11, and then the fixing bolts 4 are connected to the inside of the threaded holes 14 by passing through the internal threads of the sealing door 5, so that the installation of the sealing door 5 is tightened.

[0022] It should be noted that in this embodiment, when the boiler flue gas waste heat recovery mechanism is used, Figure 1-3 As shown, the smoke inlet pipe 2 is fixedly connected to the chimney of the boiler, so that the sealing door 5 is sealed and connected to the inside of the sealing groove 11, and the fixing bolt 4 is connected to the inside of the threaded hole 14 through the internal thread of the sealing door 5, so that the installation of the sealing door 5 is tightened, and then the valve 7 on the water inlet 9 is opened, and water is injected into the inside of the heat absorption elbow 10 through the water inlet 9. After the injection, the valve 7 is closed, so that the smoke discharged from the chimney enters between the mounting brackets 13 through the smoke inlet pipe 2, and the incoming smoke can heat the heat absorption elbow 10, and the smoke enters the inside of the T-shaped plate 17 through the filter plate 17, and enters the inside of the exhaust pipe 16 through the inside of the convex plate 17, so that the smoke can enter the upper left end of the mounting bracket 13, which can slow down the rate of smoke exhaust and speed up the stability of the insulation chamber 12. After heating, the valve 7 on the drain port 8 is opened to drain the water, and then the fixing bolt 4 is disassembled and the sealing door 5 is removed to facilitate cleaning of the inside of the box body 1.

[0023] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A boiler flue gas waste heat recovery mechanism, characterized in that: The invention comprises a box body (1) and a heat preservation chamber (12), wherein the heat preservation chamber (12) is arranged inside the box body (1), a mounting frame (13) is fixedly installed inside the heat preservation chamber (12), a filter plate (15) is arranged at the bottom of the mounting frame (13), a smoke inlet pipe (2) and a smoke exhaust pipe (3) are respectively fixedly installed on the upper end of the box body (1), the smoke exhaust pipe (3) is arranged on the right side of the mounting frame (13), and the smoke inlet pipe (2) is arranged at the upper end of the mounting frame (13), the smoke inlet pipe (2) and the smoke exhaust pipe (3) are both connected to the inside of the heat preservation chamber (12), and a plurality of heat absorbing bent pipes (10) are arranged inside the mounting frame (13), the two ends of the heat absorbing bent pipes (10) are horizontal, the two ends of the heat absorbing bent pipes (10) respectively penetrate the side wall of the box body (1) to the outside, and the pipe wall of the heat absorbing bent pipe (10) is fixedly connected to the inside of the side wall of the box body (1).

2. According to claim 1, a boiler flue gas waste heat recovery mechanism is characterized in that: A convex plate (17) is fixedly mounted on the lower end of the filter plate (15), and exhaust pipes (16) are fixedly mounted at equal intervals inside the bottom surface of the convex plate (17); the exhaust pipes (16) are curved pipes, and the exhaust port of the exhaust pipes (16) is located at the upper left end outside the mounting frame (13).

3. According to claim 2, a boiler flue gas waste heat recovery mechanism is characterized in that: A sealing groove (11) is provided inside the front end side wall of the box body (1), and the sealing groove (11) is sealedly connected to the inside of the sealing groove (11). The upper end and the rear end side wall of the mounting frame (13) are fixedly connected to the side wall of the heat preservation chamber (12). The front end side wall of the mounting frame (13) and the convex plate (17) are both parallel to the side wall in the sealing groove (11), and the front end side wall of the mounting frame (13) and the convex plate (17) are sealedly connected to the front end side wall of the sealing door (5).

4. A boiler flue gas waste heat recovery mechanism according to claim 3, characterized in that: Threaded holes (14) are symmetrically arranged inside the side walls of the sealing groove (11), and fixing bolts (4) are threadedly connected inside the two sides of the sealing door (5), and the fixing bolts (4) are connected to the inside of the threaded holes (14) through internal threads that penetrate the sealing door (5).

5. The boiler flue gas waste heat recovery mechanism according to claim 1, characterized in that: A drain port (8) and a water inlet (9) are respectively provided at the two ends of the heat absorbing curved pipe (10); the water inlet (9) is provided at the upper end of the drain port (8); and valves (7) are fixedly installed in the pipes of the drain port (8) and the water inlet (9).

6. The boiler flue gas waste heat recovery mechanism according to claim 3, characterized in that: A handle (6) is fixedly mounted on the front end side wall of the sealed door (5).

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