Flushing device for cold-end air pipe of air preheater

Abstract

The utility model discloses an air preheater cold end air pipe flushing device which comprises a vehicle body, a handle, a lithium battery, a water tank, a first water pump, a handheld spray gun and a cleaning water filtering device. The handle is installed on the left side of the top end of the vehicle body, the lithium battery is installed on the top of the right end of the handle, and the water tank is installed at the rear end of the right side of the handle; the water tank is connected with a first water pump at the front end through a pipeline, the first water pump is connected with a handheld spray gun at the right end through a pipeline, a shielding cover is installed on the circumferential surface of the handheld spray gun and connected with a cleaning water filtering device through a pipeline, and the cleaning water filtering device is connected with the water tank through a pipeline. According to the flushing device, waste water generated after the preheater is flushed can be recycled and reused through reasonable design, and meanwhile the water tank and the storage battery are arranged, so that the distance limitation of equipment use is effectively improved.

Description

Technical Field

[0001] The utility model relates to a flushing device, in particular to a flushing device for a cold end air duct of an air preheater. Background Art

[0002] The air preheater is a heat exchanger that uses the exhaust heat of heating furnaces and other devices to preheat the air. Its function is to reduce the exhaust temperature of heating furnaces and other equipment, improve thermal efficiency, make fuel easy to ignite, burn stably and improve combustion efficiency. After a long period of use, the air preheater needs to clean the cold end air duct of the air preheater. The current patent application number CN202322851226.X describes an air preheater cold end air duct flushing device. When flushing and cleaning the cold end air duct of the air preheater, it is still subject to the use distance restrictions of water supply pipes, cables, etc. At the same time, the cleaning water after flushing is not treated, which is easy to cause water resource waste and environmental pollution. Therefore, a new type of air preheater cold end air duct flushing device that is not limited by the use distance of water supply pipes and cables and is environmentally friendly and energy-saving is needed. Utility Model Content

[0003] The utility model aims to provide a cold end air duct flushing device for an air preheater to solve the above technical problems.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A cold-end air duct flushing device for an air preheater comprises a body, a handle, a lithium battery, a water tank, a first water pump, a handheld spray gun, and a clean water filter device, wherein a handle is installed on the left side of the top end of the body, a lithium battery is installed on the top of the right end of the handle, a water tank is installed on the rear end of the right side of the handle, the water tank is connected to the first water pump at the front end through a pipeline, the first water pump is connected to the handheld spray gun at the right end through a pipeline, a shielding cover is installed on the circumferential surface of the handheld spray gun and is connected to the clean water filter device through a pipeline, and the clean water filter device is connected to the water tank through a pipeline.

[0006] On the basis of the above technical scheme, the clean water filtering device includes a box body, an inlet pipe, a drain pipe, a support plate, a filter frame, an activated carbon filter, a non-woven fabric interception layer, a PP cotton filter element, a sealing ring groove, a sealing ring, and a pressurized collection bin. A water inlet pipe with an embedded structure is installed at the top of the box body and is connected to the shielding cover on the surface of the handheld spray gun. A drain pipe with an embedded structure is installed at the bottom of the left end of the box body and is connected to the water tank. A support plate with a "mouth"-shaped structure is installed in the middle of the inner side of the box body and a plug-in filter frame is installed at the top. The inside of the filter frame is filled with an activated carbon filter, a non-woven fabric interception layer, and a PP cotton filter element in sequence. A sealing ring groove is opened on the right side of the circumferential surface of the filter frame and two groups of symmetrically distributed sealing rings are nested inside. A pressurized collection bin is installed below the filter frame and is fixed by bonding.

[0007] Based on the above technical solution, the pressurized collection bin includes a collection guide frame, a one-way valve, a collection box, a water level detection sensor, and a second water pump. A one-way valve is installed at the bottom of the right end of the collection guide frame, and a collection box is installed below the one-way valve. A water level detection sensor with an embedded structure is installed on the left side of the top of the collection box. A second water pump connected by a pipeline is installed in the middle of the left end of the collection box, and the water pump is connected to the drain pipe.

[0008] Compared with the prior art, the utility model has the following advantages: the flushing device of the utility model can flush the cold end air duct of the air preheater and recycle the used sewage for multiple times, and then cooperate with the lithium battery and the water tank to make the flushing device get rid of the distance limitation of the water pipe and the cable, which effectively improves the convenience of the equipment and is simple, convenient and energy-saving to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the appearance structure of the utility model.

[0010] Figure 2 This is a schematic diagram of the structure of the clean water filtering device of the utility model.

[0011] Figure 3 This is a schematic diagram of the structure of the pressurized collection bin of the utility model.

[0012] In the figure: 1. body, 2. handle, 3. lithium battery, 4. water tank, 5. first water pump, 6. handheld spray gun, 7. clean water filter, 8. box, 9. water inlet pipe, 10. drain pipe, 11. support plate, 12. filter frame, 13. activated carbon filter, 14. non-woven fabric interception layer, 15. PP cotton filter element, 16. sealing ring groove, 17. sealing ring, 18. pressurized collection bin, 19. collection guide frame, 20. one-way valve, 21. collection box, 22. water level detection sensor, 23. second water pump. DETAILED DESCRIPTION

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0014] like Figure 1-3 As shown, a cold end air duct flushing device for an air preheater comprises a body 1, a handle 2, a lithium battery 3, a water tank 4, a first water pump 5, a handheld spray gun 6, and a clean water filter 7. The handle 2 is installed on the left side of the top of the body 1, the lithium battery 3 is installed on the top of the right end of the handle 2, and the water tank 4 is installed on the rear end of the right side of the handle 2. The water tank 4 is connected to the first water pump 5 at the front end through a pipeline, and the first water pump 5 is connected to the handheld spray gun 6 at the right end through a pipeline. A shielding cover is installed on the circumferential surface of the handheld spray gun 6 and is connected to the clean water filter 7 through a pipeline, and the clean water filter 7 is connected to the water tank 4 through a pipeline.

[0015] The clean water filtering device 7 includes a box body 8, a water inlet pipe 9, a drain pipe 10, a support plate 11, a filter frame 12, an activated carbon filter 13, a non-woven fabric interception layer 14, a PP cotton filter element 15, a sealing ring groove 16, a sealing ring 17, and a pressurized collection bin 18. The top of the box body 8 is provided with an embedded water inlet pipe 9 and is connected to the shielding cover on the surface of the handheld spray gun 6. The bottom of the left end of the box body 8 is provided with an embedded drain pipe 10 and is connected to the water tank 4. A "mouth"-shaped support plate 11 is provided in the middle of the inner side of the box body 8 and a plug-in filter frame 12 is provided at the top. The inner side of the filter frame 12 is filled with an activated carbon filter 13, a non-woven fabric interception layer 14, and a PP cotton filter element 15 in sequence. A sealing ring groove 16 is provided on the right side of the circumferential surface of the filter frame 12 and two groups of symmetrically distributed sealing rings 17 are nested inside. A pressurized collection bin 18 is installed below the filter frame 12 and is fixed by bonding.

[0016] The pressurized collection bin 18 includes a collection guide frame 19, a one-way valve 20, a collection box 21, a water level detection sensor 22, and a second water pump 23. A one-way valve 20 is installed at the bottom of the right end of the collection guide frame 19, and a collection box 21 is installed below the one-way valve 20. A water level detection sensor 22 with an embedded structure is installed on the left side of the top end of the collection box 21. A second water pump 23 connected by a pipeline is installed in the middle of the left end of the collection box 21, and the water pump 23 is connected to the drain pipe 10.

[0017] The working principle of the utility model is as follows: first, fill the water tank with water before flushing the cold end air duct of the air preheater, then move the vehicle body to the vicinity of the cold end air duct of the air preheater, and then clean it with a handheld spray gun in cooperation with a shielding cover (the first water pump is driven by a lithium battery to pressurize and deliver the clean water in the water tank to the handheld spray gun), and then the sewage after flushing falls into the shielding cover, which not only prevents the operator from being contaminated by the sewage but also recycles the sewage, and then the sewage enters the clean water filter device and cooperates with the activated carbon filter net, non-woven fabric interception layer, and PP cotton filter element inside the filter frame to filter the sewage, at the same time, the filter frame and the box body are connected by plugging and cooperate with the sealing ring embedded groove and the sealing ring to prevent sewage leakage during the sewage filtering process, and then the filtered sewage passes through the collection guide frame and the one-way valve into the collection box, and then cooperates with the water level detection sensor to monitor the water level in real time and cooperates with the second water pump to deliver the filtered water to the water tank at the predetermined water level for easy recycling.

[0018] The above is a preferred embodiment of the present invention. For ordinary technicians in this field, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the scope of protection of the present invention.

Claims

1. An air preheater cold end air duct flushing device, comprising a body (1), a handle (2), a lithium battery (3), a water tank (4), a first water pump (5), a handheld spray gun (6), and a cleaning water filter (7), characterized in that: A handle (2) is installed on the left side of the top of the vehicle body (1), a lithium battery (3) is installed on the top of the right end of the handle (2), a water tank (4) is installed on the rear end of the right side of the handle (2), the water tank (4) is connected to a first water pump (5) at the front end through a pipeline, the first water pump (5) is connected to a handheld spray gun (6) at the right end through a pipeline, a shielding cover is installed on the circumferential surface of the handheld spray gun (6) and is connected to a clean water filter device (7) through a pipeline, and the clean water filter device (7) is connected to the water tank (4) through a pipeline.

2. The air preheater cold end air duct flushing device according to claim 1, characterized in that: The clean water filtering device (7) comprises a housing (8), a water inlet pipe (9), a drain pipe (10), a support plate (11), a filter frame (12), an activated carbon filter (13), a non-woven fabric interception layer (14), a PP cotton filter element (15), a sealing ring groove (16), a sealing ring (17), and a pressurized collection bin (18). The top of the housing (8) is provided with a water inlet pipe (9) of an embedded structure and connected to a shielding cover on the surface of a handheld spray gun (6). The bottom of the left end of the housing (8) is provided with a drain pipe (10) of an embedded structure. The box body (8) is connected to a water tank (4). A support plate (11) with a "mouth"-shaped structure is installed in the middle of the inner side of the box body (8), and a plug-in filter frame (12) is installed at the top. The inner side of the filter frame (12) is filled with an activated carbon filter screen (13), a non-woven fabric interception layer (14), and a PP cotton filter element (15) in sequence. A sealing ring embedding groove (16) is opened on the right side of the circumferential surface of the filter frame (12), and two groups of symmetrically distributed sealing rings (17) are embedded inside. A pressurized collection bin (18) is installed below the filter frame (12) and is fixed by bonding.

3. The air preheater cold end air duct flushing device according to claim 2, characterized in that: The pressurized collection bin (18) comprises a collection guide frame (19), a one-way valve (20), a collection box (21), a water level detection sensor (22), and a second water pump (23); the one-way valve (20) is installed at the bottom of the right end of the collection guide frame (19); the collection box (21) is installed below the one-way valve (20); a water level detection sensor (22) with an embedded structure is installed on the left side of the top end of the collection box (21); a second water pump (23) connected to a pipeline is installed in the middle of the left end of the collection box (21); the water pump (23) is connected to the drainage pipe (10).

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