Kiln waste heat recycling device

Abstract

The utility model discloses a kiln waste heat recycling device, which belongs to the field of kiln waste heat recycling and comprises a recycling barrel welded at one end of a smoke exhaust pipe and a smoke filtering mechanism arranged at one end, far away from the smoke exhaust pipe, of the recycling barrel. The kiln waste heat recycling device is simple in structure and convenient to use, smoke directly enters the recycling barrel through the smoke exhaust pipe and exchanges heat with low-temperature water injected into the containing cavity in the spiral pipe, the temperature of the water is increased, heat exhausted by the kiln is effectively recycled, the energy utilization efficiency is improved, the energy consumption cost is reduced, and the energy utilization rate is increased. The filter screen plate and the active filter plate are arranged in the discharge pipe, large-particle impurities and harmful substances in flue gas can be effectively removed, discharged gas is purified, pollution to the environment is reduced, the active filter plate is matched with the mounting frame, replacement and mounting become more convenient, and the maintenance time and cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of kiln waste heat recovery, in particular to a kiln waste heat recovery and utilization device. Background Art

[0002] A kiln is a furnace used to fire ceramics, sculptures, enamels, or fuse to the surface of metal objects. It is usually made of bricks and stones, can be made into various sizes according to needs, and can be operated by combustible gas, oil or electricity. Kilns are essential facilities in pottery molding, providing the necessary heat environment for processes such as firing ceramics, glass and metal processing.

[0003] Upon investigation, the Chinese utility model patent with publication number CN211291076U discloses a kiln flue gas waste heat recovery and utilization device, including a firing chamber, one end of the firing chamber is connected to a preheating chamber, one side of the firing chamber is connected to the preheating chamber through an "L"-shaped tube, and an ash box is provided at the bottom end of the "L"-shaped tube. The firing chamber includes an inner cavity and an outer cavity, the inner cavity is connected to the "L"-shaped tube through a smoke pipe, and the outer cavity is connected to the "L"-shaped tube through a hot air pipe. A combustion device is fixed to the bottom surface of the firing chamber, a gas pipe is provided at the bottom end of the combustion device, a first fan is fixed to one side of the firing chamber where the "L"-shaped tube is fixed, and a second fan is connected to the other side of the firing chamber where the "L"-shaped tube is fixed, the first fan is connected to the combustion device through an air inlet pipe, and a heat exchanger and a recovery device are connected to one side of the preheating chamber.

[0004] The above-mentioned waste heat recovery and utilization device connects the firing chamber with the preheating chamber and the heat exchanger through an "L"-shaped pipe, and transports the flue gas and hot air to the preheating chamber and the heat exchanger, thereby improving the heat energy recovery rate in the flue gas; however, when the flue gas passes through the filter above the ash box, large particles of impurities will be filtered out by the filter. As the flue gas is continuously processed, the filter may be blocked, and the setting of the filter is not convenient for the staff to clean it.

[0005] Therefore, the utility model provides a kiln waste heat recovery and utilization device to solve the above problems. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] The utility model provides a kiln waste heat recovery and utilization device, aiming to solve the problem that the existing filter screen is inconvenient to clean and the like mentioned in the background technology.

[0008] (II) Technical solution

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a kiln waste heat recovery and utilization device, in order to solve the problem of hot flue gas filtering and filter replacement, comprises a recovery cylinder welded to one end of a smoke exhaust pipe and a smoke filtering mechanism arranged at one end of the recovery cylinder away from the smoke exhaust pipe;

[0010] The smoke filtering mechanism comprises a discharge pipe connected to the end of the recovery tube away from the smoke exhaust pipe, a connection mechanism for connecting the discharge pipe with the end of the recovery tube away from the smoke exhaust pipe, and a filter screen plate and an active filter plate symmetrically arranged at both ends of the discharge pipe;

[0011] The inside of the discharge pipe is symmetrically provided with an installation frame, the installation frame is provided with a slot, and the filter screen plate and the active filter plate are both provided with a block adapted to the slot. The smoke is directly filtered through the discharge pipe in the smoke exhaust pipe, and the discharge pipe can be disassembled as a whole through the connection mechanism, and the filter screen plate and the active filter plate can be quickly disassembled by using the slot and the block.

[0012] Preferably, in order to solve the problem of replacing the active filter plate and the filter screen plate, the card slot includes a slot provided in the installation frame and a limit slot provided in the installation frame and connected to the slot at one end. By using the card block and the card slot in coordination, the active filter plate and the filter screen plate can be quickly replaced, ensuring more convenient maintenance.

[0013] Preferably, in order to solve the problem of disassembly and assembly of the discharge pipe, the connection mechanism includes an annular slot provided at one end of the recovery tube away from the smoke exhaust pipe, a sealing sleeve fixedly installed at one end of the discharge pipe corresponding to the annular slot, and a threaded sleeve sleeved at the connection end of the discharge pipe and the recovery tube. The connection mechanism can realize rapid disassembly and assembly of the discharge pipe, so as to operate the filter screen plate and the annular filter plate.

[0014] Preferably, in order to solve the problem of heat recovery, the recovery cylinder includes a shell and sealing plates symmetrically arranged inside the shell, and a cavity for storing water is formed between the two sealing plates and the shell;

[0015] The recovery cylinder further includes at least two spiral tubes arranged in an annular array between the two sealing plates, and the two ends of the spiral tubes are respectively connected to the exhaust pipe and the smoke filter mechanism. The use of the spiral tubes prolongs the flow path of the smoke, and the smoke in the spiral tubes can exchange heat with the liquid in the cavity to achieve heat recovery.

[0016] Preferably, in order to solve the problem of utilizing the recovered heat, the recovery cylinder is symmetrically provided with a pipe connected to the chamber, and a control valve is provided on the pipe. Through the connection between the pipe and the outside, the recovered heat can be directly utilized, which is more convenient to use.

[0017] Preferably, in order to solve the driving problem when the active filter plate and the filter screen plate are replaced, the active filter plate and the filter screen plate are fixedly installed with a paddle on the side away from each other. The active filter plate and the filter screen plate can be driven by paddle.

[0018] (III) Beneficial effects

[0019] The kiln waste heat recovery and utilization device has a simple structure and is easy to use. The flue gas directly enters the recovery cylinder through the smoke exhaust pipe and exchanges heat with the low-temperature water injected into the cavity in the spiral tube to heat the water, thereby effectively recovering the heat discharged by the kiln, improving energy utilization efficiency, and reducing energy consumption costs. The filter screen plate and the active filter plate are arranged in the discharge pipe, which can effectively remove large particles of impurities and harmful substances in the flue gas, purify the exhaust gas, and reduce pollution to the environment. The cooperation between the active filter plate and the installation frame also makes replacement and installation more convenient, reducing the time and cost of maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a kiln waste heat recovery and utilization device;

[0021] Figure 2 It is a schematic cross-sectional structural diagram of a recovery cylinder of a kiln waste heat recovery and utilization device;

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of a discharge pipe of a kiln waste heat recovery and utilization device;

[0023] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of .

[0024] In the figure: 1. recovery cylinder; 11. shell; 12. sealing plate; 13. spiral tube; 14. chamber; 15. pipeline; 151. control valve; 2. smoke filtering mechanism; 21. discharge pipe; 22. connecting mechanism; 221. annular slot; 222. sealing sleeve; 223. threaded sleeve; 23. filter screen; 24. active filter plate; 25. mounting frame; 26. slot; 261. slot; 262. limit slot; 27. block; 3. exhaust pipe. DETAILED DESCRIPTION

[0025] 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.

[0026] The utility model provides a kiln waste heat recovery and utilization device, such as Figure 1-4 As shown, the kiln waste heat recovery and utilization device comprises a recovery tube 1 welded to one end of a smoke exhaust pipe 3 and a smoke filtering mechanism 2 arranged at one end of the recovery tube 1 away from the smoke exhaust pipe 3;

[0027] The smoke filtering mechanism 2 includes an exhaust pipe 21 connected to the end of the recovery tube 1 away from the exhaust pipe 3, a connecting mechanism 22 for connecting the exhaust pipe 21 with the end of the recovery tube 1 away from the exhaust pipe 3, and a filter screen 23 and an active filter plate 24 symmetrically arranged at both ends of the exhaust pipe 21;

[0028] A mounting frame 25 is symmetrically arranged inside the discharge pipe 21 . A clamping slot 26 is provided on the mounting frame 25 . Both the filter screen plate 23 and the active filter plate 24 are provided with a clamping block 27 adapted to the clamping slot 26 .

[0029] When in use, the hot flue gas discharged from the kiln can directly enter the recovery tube 1 through the exhaust pipe 3 for heat exchange, and the flue gas after heat exchange can enter the discharge pipe 21 and be filtered by the filter plate 23 and the active filter plate 24 in the discharge pipe 21, so that the flue gas emission is more environmentally friendly, and the filter plate 23 can be quickly disassembled in the installation frame 25 by using the block 27 and the slot 26.

[0030] Specifically, the card slot 26 includes a slot 261 provided in the installation frame 25 and a limiting slot 262 provided in one end of the installation frame 25 and connected with the slot 261; when the active filter plate 24 is replaced, it can be rotated first so that the card block 27 slides along the limiting slot 262 to the connection with the slot 261, and then the active filter plate 24 can be pulled to pull the card block 27 out of the slot 261. When replacing and installing, the active filter plate 24 can be first inserted into the installation frame 25 and then rotated.

[0031] More specifically, the connecting mechanism 22 includes an annular slot 221 provided at one end of the recovery tube 1 away from the smoke exhaust pipe 3, a sealing sleeve 222 fixedly installed at one end of the discharge pipe 21 corresponding to the annular slot 221, and a threaded sleeve 223 sleeved on the connecting end of the discharge pipe 21 and the recovery tube 1; when the threaded sleeve 223 is rotated, the threaded sleeve 223 can be moved out of the connection between the discharge pipe 21 and the recovery tube 1, and then the discharge pipe 21 can be pulled to separate the sealing sleeve 222 from the annular slot 221, thereby completing the disassembly of the discharge pipe 21.

[0032] Furthermore, the recovery cylinder 1 comprises a shell 11 and a sealing plate 12 symmetrically arranged inside the shell 11, and a water storage cavity 14 is formed between the two sealing plates 12 and the shell 11;

[0033] The recovery tube 1 also includes at least two spiral tubes 13 arranged in a circular array between the two sealing plates 12, and the two ends of the spiral tubes 13 are respectively connected to the smoke exhaust pipe 3 and the smoke filtering mechanism 2; low-temperature heat exchange liquid can enter and exit the cavity 14, and the smoke enters the spiral tubes 13 in the recovery tube 1 through the smoke exhaust pipe 3, thereby extending the flow path of the smoke, and heat can be exchanged with the heat exchange liquid in the cavity 14 in the spiral tubes 13.

[0034] Furthermore, the recovery cylinder 1 is symmetrically provided with a pipe 15 connected to the cavity 14, and a control valve 151 is provided on the pipe 15; the pipe 15 can be connected to an external water tank, so that the heat exchange liquid can enter the cavity 14 through the pipe 15 to circulate, and the control valve 151 can control the flow of the pipe 15.

[0035] Furthermore, a paddle is fixedly mounted on the sides of the active filter plate 24 and the filter screen plate 23 that are away from each other; when the paddle is rotated or pulled, the active filter plate 24 and the filter screen plate 23 can be driven to rotate or pull.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A kiln waste heat recovery device, comprising a recovery tube (1) welded to one end of a smoke exhaust pipe (3) and a smoke filtering mechanism (2) arranged at one end of the recovery tube (1) away from the smoke exhaust pipe (3); Features: The smoke filtering mechanism (2) comprises an exhaust pipe (21) connected to an end of the recovery tube (1) away from the exhaust pipe (3), a connecting mechanism (22) for connecting the exhaust pipe (21) to an end of the recovery tube (1) away from the exhaust pipe (3), and a filter screen (23) and an active filter plate (24) symmetrically arranged at both ends of the exhaust pipe (21); A mounting frame (25) is symmetrically arranged inside the discharge pipe (21), a card slot (26) is provided on the mounting frame (25), and both the filter screen plate (23) and the active filter plate (24) are provided with a card block (27) adapted to the card slot (26).

2. The kiln waste heat recovery and utilization device according to claim 1 is characterized in that: The card slot (26) comprises a slot (261) provided in the installation frame (25) and a limiting slot (262) provided in the installation frame (25) and communicating with the slot (261) at one end.

3. The kiln waste heat recovery and utilization device according to claim 1 is characterized in that: The connecting mechanism (22) comprises an annular slot (221) provided at one end of the recovery tube (1) away from the smoke exhaust pipe (3), a sealing sleeve (222) fixedly mounted at one end of the discharge pipe (21) and corresponding to the annular slot (221), and a threaded sleeve (223) sleeved on the connection end between the discharge pipe (21) and the recovery tube (1).

4. The kiln waste heat recovery and utilization device according to claim 1 is characterized in that: The recovery cylinder (1) comprises a shell (11) and sealing plates (12) symmetrically arranged inside the shell (11), and a chamber (14) for storing water is formed between the two sealing plates (12) and the shell (11); The recovery cylinder (1) further comprises at least two spiral tubes (13) arranged in a circular array between the two sealing plates (12), and the two ends of the spiral tubes (13) are respectively connected to the smoke exhaust pipe (3) and the smoke filtering mechanism (2).

5. The kiln waste heat recovery and utilization device according to claim 4 is characterized in that: The recovery cylinder (1) is symmetrically provided with a pipeline (15) communicating with the chamber (14), and the pipeline (15) is provided with a control valve (151).

6. The kiln waste heat recovery and utilization device according to claim 1 is characterized in that: A shift plate is fixedly mounted on the side of the active filter plate (24) and the filter screen plate (23) that is away from each other.

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