Descaling device of air preheater

Abstract

The utility model relates to a descaling device of an air preheater, which belongs to the technical field of preheater cleaning equipment and is characterized in that a first descaling device comprises two groups of bearing steel pipes, a first limiting guide rail frame is fixed on one group of bearing steel pipes, and a second limiting guide rail frame is fixed on the other group of bearing steel pipes; the first limiting guide rail frame is provided with a threaded rod through a round through hole, one end of the threaded rod is connected with a stepping motor, the threaded rod is provided with a first threaded nut and a second threaded nut, one side of the first threaded nut is fixedly provided with one end of a first PVC water pipe, and one side of the second threaded nut is fixedly provided with one end of a second PVC water pipe; according to the descaling device, the preheating assembly of the air preheater can be efficiently descaled, so that the preheating performance of the air preheater is improved, accidents of the air preheater in the operation process are avoided, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of preheater cleaning equipment, in particular to a descaling device for an air preheater. Background Art

[0002] Air preheater is a device that uses hot flue gas to heat the air to a certain temperature. It is usually used in industrial production, heating systems, boiler systems and other fields. Its main function is to increase the temperature of the air before it enters the burner or other system to increase the combustion efficiency or system efficiency; the air preheater usually uses waste heat or other heat sources to heat the air entering the system, thereby reducing energy consumption. However, hot flue gas or other waste heat energy is usually input in the form of smoke, and there are a large number of solid particles. Therefore, the long-term entry of solid particles into the air preheater will cause the air preheater to adhere to a large amount of dirt that is difficult to clean. The presence of these dirts greatly reduces the air heating performance of the air preheater, affecting the industrial preheating effect; and the cleaning of the dirt requires manual descaling of multiple preheating slots of the air preheater one by one, which is time-consuming and labor-intensive, and reduces the cleaning efficiency. Utility Model Content

[0003] The utility model overcomes the shortcomings of the prior art and provides a descaling device for an air preheater.

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

[0005] The utility model provides a descaling device for an air preheater, the descaling device comprising a base plate, a first descaling module and a second descaling module:

[0006] The first descaling device comprises two groups of load-bearing steel pipes, one group of the load-bearing steel pipes is fixed with a first limiting guide rail frame, and the other group of the load-bearing steel pipes is fixed with a second limiting guide rail frame, the first limiting guide rail frame is installed with a threaded rod through a circular through hole, one end of the threaded rod is connected to a stepping motor, a first threaded nut and a second threaded nut are installed on the threaded rod, one side of the first threaded nut is fixed with one end of a first PVC water pipe, and one side of the second threaded nut is fixed with one end of a second PVC water pipe;

[0007] The second descaling module includes a first descaling column, a first disc mounting block is arranged on one side of the first descaling column, a first annular groove is opened on the first disc mounting block, an annular slide rail is embedded in the first annular groove, the annular slide rail is arranged on the outer side of the preheater descaling disc, the preheater descaling disc is connected to the second annular groove through the annular slide rail, the second annular groove is opened on the second disc mounting block, a second descaling column is arranged on the side of the second disc mounting block, the first disc mounting block is opened with a convex groove, a pinion is installed in the convex groove.

[0008] Furthermore, in a preferred embodiment of the utility model, a first guide rod slider is fixed to the other end of the first PVC water pipe, and a second guide rod slider is fixed to the other end of the second PVC water pipe.

[0009] Furthermore, in a preferred embodiment of the utility model, the first guide rod slider and the second guide rod slider are mounted on a cylindrical guide rod through a circular guide hole, and the cylindrical guide rod is fixed in a second limiting guide rail frame.

[0010] Furthermore, in a preferred embodiment of the utility model, the first PVC water pipe is provided with a plurality of first high-pressure shower heads, the second PVC water pipe is provided with a plurality of drip heads, and the first PVC water pipe is connected and the second PVC water pipe is connected with the same first water pumping pipe.

[0011] Furthermore, in a preferred embodiment of the utility model, a descaling liquid storage tank is fixed on the second PVC water pipe, a piston plate is provided in the descaling liquid storage tank, the piston plate is connected to the output rod of the cylinder, and the cylinder is fixed above the descaling liquid storage tank.

[0012] Furthermore, in a preferred embodiment of the present invention, a transmission tooth is disposed on the periphery of the preheater descaling disk, and the transmission tooth is meshed with teeth of the pinion gear.

[0013] Furthermore, in a preferred embodiment of the present invention, the pinion gear is connected to the output shaft of the rotating motor.

[0014] Furthermore, in a preferred embodiment of the utility model, a plurality of second high-pressure shower heads are provided on the second descaling column, and a second water extraction pipe is connected to the side of the second descaling column.

[0015] Furthermore, in a preferred embodiment of the utility model, a sewage storage tank is arranged above the base plate, a water guide hose is connected to one side of the sewage storage tank, and a plurality of universal pulleys are installed at the bottom of the base plate.

[0016] Furthermore, in a preferred embodiment of the utility model, the sewage storage tank is connected to a preheater descaling disk via a bearing, and a sewage discharge hole is provided on the preheater descaling disk.

[0017] The beneficial technical effects of the utility model are:

[0018] The piston plate is driven by the cylinder to squeeze the descaling liquid in the descaling liquid storage tank, so that the descaling liquid drips downward to the surface and the slot hole of the preheating component directly below through the dripping head on the second PVC water pipe; at the same time, by filling the first PVC water pipe with water to form a certain water pressure, the water body will be sprayed out from each first high-pressure shower head in the form of high-pressure water, so as to realize high-pressure washing of the surface and the slot hole of the preheating component directly below; and the threaded rod is driven to rotate by the stepping motor, and the rotation of the threaded rod synchronously drives the first PVC water pipe and the second PVC water pipe to translate, so as to realize the descaling liquid in the first PVC water pipe and the high-pressure water in the second PVC water pipe to uniformly spray and clean the preheating component, and the small gear drives the preheater descaling disk to rotate at a low speed, and the second high-pressure shower head on the side of the second descaling column sprays high-pressure water to perform all-round high-pressure spray descaling on the side surface and the side slot hole of the preheating component, so as to achieve the purpose of efficient and rapid descaling and improve the performance of the air preheater. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the AA structure of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the first descaling module of the utility model;

[0023] Figure 4 This is a schematic diagram of the disassembled structure of the second descaling module of the utility model;

[0024] Figure 5 It is a partial structural schematic diagram of the utility model.

[0025] In the figure:

[0026] 1. Base plate; 2. Load-bearing steel pipe; 3. First limited guide rail frame; 4. Second limited guide rail frame; 5. Threaded rod; 6. Stepper motor; 7. First threaded nut; 8. Second threaded nut; 9. First PVC water pipe; 10. Second PVC water pipe; 11. First guide rod slider; 12. Second guide rod slider; 13. Cylindrical guide rod; 14. First high-pressure shower head; 15. Drip head; 16. First water pumping pipe; 17. Descaling liquid storage tank; 18. Piston plate; 19. Gas cylinder; 20, first descaling column; 21, first disc mounting block; 22, first annular slide; 23, annular slide rail; 24, preheater descaling disc; 25, second annular slide; 26, second disc mounting block; 27, second descaling column; 28, convex groove; 29, pinion; 30, rotating motor; 31, second high-pressure shower head; 32, second water pumping pipe; 33, sewage storage tank; 34, water guide hose; 35, universal pulley; 36, bearing; 37, sewage discharge hole. DETAILED DESCRIPTION

[0027] 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.

[0028] In the description of the utility model, the reference to "embodiment", "one embodiment", "some embodiments", or "other embodiments" indicates that the specific features, structures or characteristics described in conjunction with the embodiment are included in at least some embodiments, but not necessarily all embodiments. Multiple occurrences of "embodiment", "one embodiment", or "some embodiments" do not necessarily all refer to the same embodiment. If the specification describes that a component, feature, structure or characteristic "may", "perhaps" or "can" be included, the specific component, feature, structure or characteristic is not necessarily included. If the specification or claim mentions "one" element, it does not mean that there is only one element. If the specification or claim mentions "another" element, it does not exclude the presence of more than one other element. In addition, specific features, structures, functions or characteristics can be combined in one or more embodiments in any suitable manner. For example, the first embodiment can be combined with the second embodiment, as long as the specific features, structures, functions or characteristics associated with the two embodiments are not mutually exclusive.

[0029] In the description of the present invention, unless otherwise specified, the use of ordinal adjectives such as "first", "second", and "third" to describe a common object only refers to different instances of the same object, and does not imply that the objects described in this way must adopt a given order, whether in time, space, order, or any other manner. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0031] Example

[0032] like Figure 1 As shown, the present application provides a descaling device for an air preheater, the descaling device comprising a base plate 1, a first descaling module and a second descaling module.

[0033] like Figure 1 , 2 As shown, the first descaling device includes two groups of load-bearing steel pipes 2, one group of the load-bearing steel pipes 2 is fixed with a first limiting guide rail frame 3, and the other group of the load-bearing steel pipes 2 is fixed with a second limiting guide rail frame 4, the first limiting guide rail frame 3 is installed with a threaded rod 5 through a circular through hole, one end of the threaded rod 5 is connected to a stepping motor 6, a first threaded nut 7 and a second threaded nut 8 are installed on the threaded rod 5, one side of the first threaded nut 7 is fixed with one end of a first PVC water pipe 9, and one side of the second threaded nut 8 is fixed with one end of a second PVC water pipe 10.

[0034] like Figure 2 , 3 As shown, a first guide rod slider 11 is fixed to the other end of the first PVC water pipe 9 , and a second guide rod slider 12 is fixed to the other end of the second PVC water pipe 10 .

[0035] like Figure 3 As shown, the first guide rod slider 11 and the second guide rod slider 12 are mounted on the cylindrical guide rod 13 through circular guide holes, and the cylindrical guide rod 13 is fixed in the second limiting guide rail frame 4.

[0036] like Figure 1 , 2As shown, the first PVC water pipe 9 is provided with a plurality of first high-pressure shower heads 14 , the second PVC water pipe 10 is provided with a plurality of drip heads 15 , and the first PVC water pipe 9 is connected to the second PVC water pipe 10 and is connected to the same first water pumping pipe 16 .

[0037] It should be noted that the end of the first pumping pipe 16 is connected to the pumping equipment in the prior art.

[0038] like Figure 3 As shown, a descaling liquid storage tank 17 is fixed on the second PVC water pipe 10 , and a piston plate 18 is arranged in the descaling liquid storage tank 17 . The piston plate 18 is connected to the output rod of the cylinder 19 , and the cylinder 19 is fixed above the descaling liquid storage tank 17 .

[0039] It should be noted that the preheating assembly of the air preheater is transported to the preheater descaling plate 24 by means of the transportation equipment of the prior art, and at this time, the cylinder 19 is started to operate, and the output rod of the cylinder 19 is extended to drive the piston plate 18 to compress in the descaling liquid storage tank 17, and then the descaling liquid stored in the descaling liquid storage tank 17 is squeezed, and the descaling liquid after squeezing flows into the second PVC water pipe 10, so that the descaling liquid drips downward from several drip heads 15 to the surface and the slot holes of the preheating assembly directly below; at the same time, the pumping equipment of the prior art is started to transport the water to the first PVC water pipe 9 through the first pumping pipe 16, and when the first PVC water pipe 9 is filled with water to form a certain water pressure, the water will flow out from each first high-pressure shower head 14 at this time. The air preheater is sprayed out in the form of high-pressure water, thereby realizing high-pressure flushing of the surface and the slot of the preheating component directly below; at this time, the stepper motor 6 is started, and the stepper motor 6 drives the threaded rod 5 to rotate. The rotation of the threaded rod 5 synchronously drives the first threaded nut 7 and the second threaded nut 8 to move from one end to the other end, thereby driving the first PVC water pipe 9 and the second PVC water pipe 10 to translate, so that the descaling liquid in the first PVC water pipe 9 and the high-pressure water in the second PVC water pipe 10 can evenly spray and clean the preheating component, thereby achieving the purpose of efficient and rapid descaling, improving the performance of the air preheater, avoiding safety hazards during the preheating process of the air preheater, and replacing the manual addition of descaling liquid and flushing steps, saving time and effort, and making the design more humane. During the movement of the first PVC water pipe 9 and the second PVC water pipe 10, since the first guide rod slider 11 and the second guide rod slider 12 can perform guiding sliding in the second limiting guide rail frame 4, the movement of the first PVC water pipe 9 and the second PVC water pipe 10 can be more stable and reliable during the movement, thereby improving the spraying uniformity of the descaling liquid and the high-pressure water body and avoiding the descaling liquid and the high-pressure water body from deflecting and splashing due to operating vibration.

[0040] like Figure 4As shown, the second descaling module includes a first descaling column 20, a first disc mounting block 21 is arranged on one side of the first descaling column 20, a first annular groove 22 is opened on the first disc mounting block 21, a circular slide rail 23 is embedded in the first annular groove 22, the circular slide rail 23 is arranged on the outer side of the preheater descaling disc 24, the preheater descaling disc 24 is connected to the second annular groove 25 through the circular slide rail 23, the second annular groove 25 is opened on the second disc mounting block 26, a second descaling column 27 is arranged on the side of the second disc mounting block 26, the first disc mounting block 21 is opened with a convex groove 28, a pinion 29 is installed in the convex groove 28.

[0041] like Figure 4 As shown, the periphery of the preheater descaling disc 24 is provided with transmission teeth, and the transmission teeth are meshed with the teeth of the pinion 29.

[0042] like Figure 4 As shown, the pinion gear 29 is connected to the output shaft of the rotary motor 30 .

[0043] like Figure 4 As shown, a plurality of second high-pressure shower heads 31 are disposed on the second descaling column 27 , and a second water extraction pipe 32 is connected to the side of the second descaling column 27 .

[0044] It should be noted that the end of the second pumping pipe 32 is connected to the pumping equipment of the prior art. When the first descaling module sprays and descales the preheating component from top to bottom, the rotating motor 30 is started, and the output shaft of the rotating motor 30 drives the pinion 29 to rotate at a low speed. At this time, the teeth of the pinion 29 will move the transmission teeth. Since the transmission teeth are arranged on the periphery of the preheater descaling disc 24 and the bearing 36 at the bottom of the preheater descaling disc 24 acts, the pinion 29 will drive the preheater descaling disc 24 to rotate at a low speed under the limitation of the first disc mounting block 21 and the second disc mounting block 26, thereby driving the preheating component on the preheater descaling disc 24 to rotate synchronously at a low speed. At this time, the water is transported to the second descaling column 27 through the second water pumping pipe 32 using the existing water pumping equipment. When the second descaling column 27 is filled with water to form a certain water pressure, the water will be ejected from each second high-pressure shower head 31 in the form of high-pressure water, so as to realize high-pressure spraying and flushing of the side surface and side slot holes of the preheating component rotating at a low speed. Combined with the descaling liquid dripping from the first PVC water pipe 9, the efficient cleaning degree of the preheating component of the air preheater can be greatly improved, thereby achieving an all-round descaling effect of the air preheater, good descaling performance and high reliability.

[0045] like Figure 4 , 5As shown, a sewage storage tank 33 is arranged above the base plate 1 , a water hose 34 is connected to one side of the sewage storage tank 33 , and a plurality of universal pulleys 35 are installed at the bottom of the base plate 1 .

[0046] like Figure 4 , 5 As shown, the sewage storage tank 33 is connected to the preheater descaling plate 24 via a bearing 36, and the preheater descaling plate 24 is provided with a sewage discharge hole 37.

[0047] It should be noted that the end of the water hose 34 is connected to the sewage treatment tank. When the first descaling module and the second descaling module spray and descale the preheating component, the sewage generated in the process will directly fall into the sewage storage tank or be introduced into the sewage storage tank 33 through the sewage discharge through hole 37 on the preheater descaling plate 24. The sewage falling into the sewage storage tank 33 will be discharged into the sewage treatment tank through the water hose 34, realizing efficient centralized treatment of the air preheater descaling sewage, avoiding the descaling sewage from polluting the on-site working environment, improving the self-cleaning effect of the device, and the device can be adjusted through the universal pulley 35 according to the setting position of the sewage treatment tank, improving the descaling flexibility and the cleanliness of the surrounding environment, the design is simple and reasonable, and the economic benefit is high.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A descaling device for an air preheater, the descaling device comprising a base plate, a first descaling module and a second descaling module, characterized in that: The first descaling module comprises two groups of load-bearing steel pipes, one group of the load-bearing steel pipes is fixed with a first limiting guide rail frame, and the other group of the load-bearing steel pipes is fixed with a second limiting guide rail frame, the first limiting guide rail frame is installed with a threaded rod through a circular through hole, one end of the threaded rod is connected to a stepping motor, a first threaded nut and a second threaded nut are installed on the threaded rod, one side of the first threaded nut is fixed with one end of a first PVC water pipe, and one side of the second threaded nut is fixed with one end of a second PVC water pipe; The second descaling module includes a first descaling column, a first disc mounting block is arranged on one side of the first descaling column, a first annular groove is opened on the first disc mounting block, an annular slide rail is embedded in the first annular groove, the annular slide rail is arranged on the outer side of the preheater descaling disc, the preheater descaling disc is connected to the second annular groove through the annular slide rail, the second annular groove is opened on the second disc mounting block, a second descaling column is arranged on the side of the second disc mounting block, the first disc mounting block is opened with a convex groove, a pinion is installed in the convex groove.

2. The descaling device for an air preheater according to claim 1, characterized in that: A first guide rod slider is fixed to the other end of the first PVC water pipe, and a second guide rod slider is fixed to the other end of the second PVC water pipe.

3. The descaling device for an air preheater according to claim 2, characterized in that: The first guide rod slider and the second guide rod slider are limitedly installed on the cylindrical guide rod through circular guide holes, and the cylindrical guide rod is fixed in the second limited guide rail frame.

4. The descaling device for an air preheater according to claim 1, characterized in that: The first PVC water pipe is provided with a plurality of first high-pressure shower heads, the second PVC water pipe is provided with a plurality of drip heads, and the first PVC water pipe is connected and the second PVC water pipe is connected with the same first water pumping pipe.

5. The descaling device for an air preheater according to claim 1, characterized in that: A descaling liquid storage tank is fixed on the second PVC water pipe, a piston plate is arranged in the descaling liquid storage tank, the piston plate is connected to the output rod of the cylinder, and the cylinder is fixed above the descaling liquid storage tank.

6. The descaling device for an air preheater according to claim 1, characterized in that: The periphery of the preheater descaling disk is provided with transmission teeth, and the transmission teeth are meshed with the teeth of the pinion gear.

7. The descaling device for an air preheater according to claim 6, characterized in that: The pinion gear is connected to the output shaft of the rotating motor.

8. The descaling device for an air preheater according to claim 1, characterized in that: A plurality of second high-pressure shower heads are arranged on the second descaling column, and a second water extraction pipe is connected to a side surface of the second descaling column.

9. The descaling device for an air preheater according to claim 1, characterized in that: A sewage storage tank is arranged above the base plate, a water guide hose is connected to one side of the sewage storage tank, and a plurality of universal pulleys are installed at the bottom of the base plate.

10. The descaling device for an air preheater according to claim 9, characterized in that: The sewage storage tank is connected to a preheater descaling disc via a bearing, and a sewage discharge through hole is provided on the preheater descaling disc.

Images