Anti-corrosion device for inner wall of chimney

Abstract

The utility model discloses an anti-corrosion device for the inner wall of a chimney, which comprises a fixed box, a water pump is arranged at the bottom end of the inner side of the fixed box, the bottom end of the water pump is communicated with an air collecting nozzle, the air collecting nozzle is fixedly connected with the fixed box, the top end of the air pump is communicated with an air pipe, and the top end of the fixed box is fixedly connected with a motor. Through the arrangement of an air pump, an air collecting nozzle, an air pipe, a fixing box and the stirring net plate, when high-humidity acid gas is discharged through a chimney, the air pump can extract the high-humidity acid gas through the air collecting nozzle, then the high-humidity acid gas is discharged into the top end of the inner side of the fixing box through the air pipe and is neutralized through alkali liquor, and then the high-humidity acid gas is discharged through the stirring net plate. And then the motor continuously drives the stirring screen plate to stir the high-humidity acid gas and the alkali liquor, so that the inner wall of the chimney can be prevented from being corroded by the high-humidity acid gas to the greatest extent in the process of discharging the neutralized gas through the chimney, and the safe operation of the chimney is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of chimney anti-corrosion, in particular to an anti-corrosion device for the inner wall of a chimney. Background Art

[0002] In recent years, with the increasingly stringent national environmental protection policies and the gradual enhancement of public environmental awareness, the field of domestic air pollution control technology has entered a "new normal", that is, standardization and normalization. At present, most thermal power generation companies are equipped with wet desulfurization devices. After the flue gas passes through the denitrification, dust removal and desulfurization devices, the pollutant concentration is significantly reduced, but the flue gas humidity is significantly increased and the flue gas temperature is significantly reduced, forming a corrosive and highly permeable low-temperature and high-humidity dilute acid gas. Since the acidic and high-humidity gas will corrode the inner wall of the chimney, when the chimney is corroded for a long time, it will pose a threat to the safe operation of the chimney. Therefore, in response to the above problems, an anti-corrosion device for the inner wall of the chimney is proposed. Utility Model Content

[0003] The technical problem to be solved by the utility model overcomes the existing defects and can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A corrosion protection device for the inner wall of a chimney comprises a fixed box, an air pump is provided at the bottom inner end of the fixed box, the bottom end of the air pump is connected to a gas collecting nozzle, and the gas collecting nozzle is fixedly connected to the fixed box, the top of the air pump is connected to an air pipe, the top of the fixed box is fixedly connected to a motor, the outer side of the main shaft of the motor is fixedly connected to a stirring mesh plate, a liquid level meter is fixedly connected to the upper left inner side of the fixed box, a pH detector is fixedly connected to the upper right inner side of the fixed box, and a controller and a receiver arranged in an upper and lower manner are fixedly connected to the top left side of the fixed box.

[0006] As a further improvement of the present invention, a one-way valve is provided on the inner side of the air pipe, and the other end of the air pipe is connected to the fixed box.

[0007] As a further improvement of the present invention, a water pump is fixedly connected to the bottom left end of the fixed box, the top of the water pump is connected to a first three-way pipe, and the right end of the first three-way pipe is connected to the fixed box, the left end of the first three-way pipe is connected to a container filled with alkali solution, the bottom end of the water pump is connected to a second three-way pipe, and the left end of the second three-way pipe is connected to the fixed box, the bottom end of the second three-way pipe is connected to the waste liquid collection box, and the inner sides of the first three-way pipe and the second three-way pipe are both fixedly connected to electric control valves.

[0008] As a further improvement of the present invention, the right end inside the fixed box is rotatably connected to a bidirectional threaded shaft with opposite thread directions on both sides, a rotating block is fixedly connected to the center of the outer side of the bidirectional threaded shaft, and the upper and lower ends of the outer side of the bidirectional threaded shaft are spirally connected to sliders that are slidably connected to the fixed box, and one end of the slider is fixedly connected to a limiting ring that is slidably connected to the fixed box.

[0009] As a further improvement of the present invention, one end of the limiting ring is fixedly connected to a sealing ring, and the sealing ring is made of rubber.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. An anti-corrosion device for the inner wall of a chimney. By means of an air pump, an air collecting nozzle, an air pipe, a fixed box and a stirring screen, when high-humidity acidic gas is discharged through the chimney, the air pump will extract the high-humidity acidic gas through the air collecting nozzle, and then discharge it into the top inner side of the fixed box through the air pipe for neutralization with alkali solution. Then, the stirring screen is continuously driven by a motor to stir the high-humidity acidic gas and alkali solution. During the process of the neutralized gas being discharged through the chimney, the inner wall of the chimney can be prevented from being corroded by the high-humidity acidic gas to the greatest extent, thereby ensuring the safe operation of the chimney.

[0012] 2. An anti-corrosion device for the inner wall of a chimney. When the inner wall of the chimney is protected against corrosion by the device, the device is placed at the bottom end of the inner side of the chimney, and then the two-way threaded shaft with opposite thread directions on both sides is rotated to spirally connect with the slider, so that the limiting ring further drives the rubber sealing ring to come into close contact with the chimney. At this time, it is convenient to quickly fix the device on the bottom end of the inner side of the chimney for anti-corrosion protection, thereby making the anti-corrosion protection of the chimney simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0014] Figure 1 The utility model is a schematic diagram of the overall structure of an anti-corrosion device for the inner wall of a chimney.

[0015] Figure 2 The utility model is a schematic cross-sectional structural diagram of an anti-corrosion device for the inner wall of a chimney.

[0016] In the figure: 1. Fixed box; 2. Air pump; 3. Air collecting nozzle; 4. Air pipe; 5. Motor; 6. Stirring screen; 7. pH detector; 8. Liquid level gauge; 9. Controller; 10. Receiver; 11. Water pump; 12. First tee pipe; 13. Second tee pipe; 14. Bidirectional threaded shaft; 15. Rotating block; 16. Slider; 17. Limiting ring; 18. Sealing ring. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with specific embodiments. The accompanying drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual drawings. They should not be understood as limiting this patent. In order to better illustrate the specific embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted. Based on the specific embodiments of the present invention, all other specific embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] Example 1

[0019] like Figure 1-2 As shown, an anti-corrosion device for the inner wall of a chimney comprises a fixed box 1, an air pump 2 is provided at the bottom inner end of the fixed box 1, the bottom end of the air pump 2 is connected to a gas collecting nozzle 3, and the gas collecting nozzle 3 is fixedly connected to the fixed box 1, the top of the air pump 2 is connected to an air pipe 4, the top of the fixed box 1 is fixedly connected to a motor 5, the outer side of the main shaft of the motor 5 is fixedly connected to a stirring mesh plate 6, a liquid level meter 8 is fixedly connected to the upper left inner side of the fixed box 1, a pH detector 7 is fixedly connected to the upper right inner side of the fixed box 1, and a controller 9 and a receiver 10 arranged in an upper and lower manner are fixedly connected to the top left side of the fixed box 1.

[0020] Example 2

[0021] like Figure 2 As shown, in order to solve the problem that the alkali solution will flow out through the air pipe 4 when the device is not in use, a one-way valve is provided on the inside of the air pipe 4, and the other end of the air pipe 4 is connected to the fixed box 1. By providing a one-way valve in the air pipe 4, the alkali solution can be prevented from flowing out when the device is not in use.

[0022] Example 3

[0023] like Figure 1-2As shown, in order to solve the problem of inconvenience in automatically replacing alkali solution, a water pump 11 is fixedly connected to the bottom left end of the fixed box 1, and the top of the water pump 11 is connected to a first three-way pipe 12, and the right end of the first three-way pipe 12 is connected to the fixed box 1, and the left end of the first three-way pipe 12 is connected to the container filled with alkali solution, and the bottom end of the water pump 11 is connected to a second three-way pipe 13, and the left end of the second three-way pipe 13 is connected to the fixed box 1, and the bottom end of the second three-way pipe 13 is connected to the waste liquid collection box. The inner sides of the first three-way pipe 12 and the second three-way pipe 13 are both fixedly connected with electric control valves, and the alkalinity of the alkali solution in the fixed box 1 is detected by the pH detector 7. When the pH detector 7 detects that the internal alkalinity drops to a certain value, the device is controlled by the controller 9, and the water pump 11 will first quantitatively extract the fixed box 1 through the right end of the first three-way pipe 12. The alkali liquid after use at the top inner side of the box 1 is then discharged into the waste liquid collection box through the bottom end of the second three-way pipe 13. At this time, the electric control valve at the right end of the first three-way pipe 12 is in an open state, and the electric control valve at the bottom end of the second three-way pipe 13 is in an open state. When the liquid level gauge 8 detects that the liquid level drops to a certain value, the controller 9 will then control the electric control valve at the left end of the first three-way pipe 12 to be in an open state, and the electric control valve at the left end of the second three-way pipe 13 to be in an open state. Then the controller 11 will control the water pump 11 to extract the alkali liquid in the container through the left end of the first three-way pipe 12, and then discharge it into the fixed box 1 through the left end of the second three-way pipe 13 for alkali liquid replenishment. When the liquid level gauge 8 detects that the liquid level inside the fixed box 1 rises to the specified liquid level, the water pump 11 stops, and the electric control valves in the first three-way pipe 12 and the second three-way pipe 13 are closed, thereby facilitating the automatic replacement of the alkali liquid.

[0024] Example 4

[0025] like Figure 1-2 As shown, in order to solve the problem of inconvenience in fixing and installing the device, the right end inside the fixed box 1 is rotatably connected to a bidirectional threaded shaft 14 with opposite thread directions on both sides, and a rotating block 15 is fixedly connected to the center of the outer side of the bidirectional threaded shaft 14. The upper and lower ends of the outer side of the bidirectional threaded shaft 14 are spirally connected to sliders 16 that are slidably connected to the fixed box 1, and one end of the slider 16 is fixedly connected to a limiting ring 17 that is slidably connected to the fixed box 1. By placing the device at the bottom end of the inner side of the chimney, and then rotating the bidirectional threaded shaft 14 with opposite thread directions on both sides to be spirally connected to the slider 16, and further pushing the limiting ring 17 to contact the chimney through the slider 16, it is convenient to fix and install the device.

[0026] Example 5

[0027] like Figure 1-2As shown, in order to solve the problem of poor sealing between the device and the chimney after it is fixedly installed, a sealing ring 18 is fixedly connected to one end of the limiting ring 17, and the sealing ring 18 is made of rubber. After the device is fixedly installed, the limiting ring 17 is in close contact with the chimney through the sealing ring 18 made of rubber, so that the sealing performance of the device connected to the chimney after it is fixedly installed is better.

[0028] In this embodiment, when the inner wall of the chimney is protected against corrosion by the device, the device is placed at the bottom end of the inner side of the chimney, and then the two-way threaded shaft 14 with opposite thread directions on both sides is rotated to be spirally connected with the slider 16, and the slider 16 is further used to push the limit ring 17 to drive the rubber sealing ring 18 to be in close contact with the chimney, and then the left end of the first three-way pipe 12 is connected to the container filled with alkali solution, and the bottom of the second three-way pipe 13 is connected to the waste liquid collection box. At this time, it is convenient to quickly fix the device on the inner bottom end of the chimney for anti-corrosion protection, and the above operations are completed. After operation, when high-humidity acidic gas is discharged through the chimney, the device is controlled by an external control mechanism. After the receiver 10 receives the control signal, the controller 9 controls the air pump 2 to extract the high-humidity acidic gas through the gas collecting nozzle 3, and then discharges it into the top of the inner side of the fixed box 1 through the air pipe 4 with a one-way valve inside to be neutralized by alkali solution. Then, the motor 5 drives the stirring screen 6 to stir the high-humidity acidic gas and alkali solution at the same time. After the neutralized gas is discharged through the chimney, the inner wall of the chimney can be prevented from being corroded by the high-humidity acidic gas to the greatest extent. In the process of using the device, when the pH detector 7 detects that the internal alkalinity drops to a certain value, the device is controlled by the controller 9, and the water pump 11 will first quantitatively extract the used alkali solution from the top of the inner side of the fixed box 1 through the right end of the first three-way pipe 12, and then discharge it into the waste liquid collection box through the bottom end of the second three-way pipe 13. At this time, the electric control valve at the right end of the first three-way pipe 12 is in an open state, and the electric control valve at the bottom end of the second three-way pipe 13 is in an open state. When the liquid level meter 8 detects that the liquid level drops to a certain value, the controller 9 will then control the first three-way pipe 12 to pump out the alkali solution. The electric control valve at the left end of the tube 12 is in the open state, and the electric control valve at the left end of the second three-way tube 13 is in the open state. Then the controller 11 will control the water pump 11 to extract the alkali solution in the container through the left end of the first three-way tube 12, and then discharge it into the fixed box 1 through the left end of the second three-way tube 13 to replenish the alkali solution. When the liquid level meter 8 detects that the liquid level inside the fixed box 1 rises to the specified liquid level, the water pump 11 stops, and the electric control valves in the first three-way tube 12 and the second three-way tube 13 are closed. At this time, the alkali solution is automatically replaced, and then the device can continue to be used.

[0029] The above is a preferred embodiment of the present invention. The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. An anti-corrosion device for the inner wall of a chimney, comprising a fixing box (1), characterized in that: An air pump (2) is provided at the bottom inner end of the fixed box (1), the bottom end of the air pump (2) is connected to an air collecting nozzle (3), and the air collecting nozzle (3) is fixedly connected to the fixed box (1), the top end of the air pump (2) is connected to an air pipe (4), the top end of the fixed box (1) is fixedly connected to a motor (5), the outer side of the main shaft of the motor (5) is fixedly connected to a stirring screen (6), the upper left inner side of the fixed box (1) is fixedly connected to a liquid level meter (8), the upper right inner side of the fixed box (1) is fixedly connected to a pH detector (7), and the top left side of the fixed box (1) is fixedly connected to a controller (9) and a receiver (10) arranged in an upper and lower manner.

2. The anti-corrosion device for the inner wall of a chimney according to claim 1, characterized in that: A one-way valve is provided on the inner side of the air pipe (4), and the other end of the air pipe (4) is in communication with the fixed box (1).

3. The anti-corrosion device for the inner wall of a chimney according to claim 1, characterized in that: The bottom left end of the fixed box (1) is fixedly connected to a water pump (11), the top end of the water pump (11) is connected to a first three-way pipe (12), and the right end of the first three-way pipe (12) is connected to the fixed box (1), the left end of the first three-way pipe (12) is connected to a container filled with alkali solution, the bottom end of the water pump (11) is connected to a second three-way pipe (13), and the left end of the second three-way pipe (13) is connected to the fixed box (1), the bottom end of the second three-way pipe (13) is connected to a waste liquid collection box, and the inner side of the first three-way pipe (12) and the inner side of the second three-way pipe (13) are both fixedly connected to an electric control valve.

4. The anti-corrosion device for the inner wall of a chimney according to claim 1, characterized in that: The right end of the inner side of the fixed box (1) is rotatably connected to a bidirectional threaded shaft (14) with opposite thread directions on both sides, a rotating block (15) is fixedly connected to the center of the outer side of the bidirectional threaded shaft (14), and the upper and lower ends of the outer side of the bidirectional threaded shaft (14) are both spirally connected to a slider (16) slidably connected to the fixed box (1), and one end of the slider (16) is fixedly connected to a limiting ring (17) slidably connected to the fixed box (1).

5. The anti-corrosion device for the inner wall of a chimney according to claim 4, characterized in that: One end of the limiting ring (17) is fixedly connected to a sealing ring (18), and the sealing ring (18) is made of rubber.

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