Fluidized bed with circulating cleaning device

Abstract

The utility model provides a fluidized bed with a circulating cleaning device, which comprises a fluidized bed body, the front and rear outer walls of the fluidized bed body are provided with a plurality of spray pipe inlet pipes, the bottom of the fluidized bed body is sequentially connected with a water outlet pipe and a blow-off pipe, a plurality of groups of heat exchangers are arranged in the fluidized bed body, and an air distribution plate is arranged below the fluidized bed body; the interior of the overflow barrel is divided into a water inlet groove and a water outlet groove through a groove dividing plate, the height of the groove dividing plate is lower than that of the top end of the overflow barrel, and the blow-off pipe extends into the water outlet groove; the input end of the water suction pump is connected with the water inlet tank; the water supply system comprises a connecting piece communicated with the water inlet pipe, and the connecting piece is provided with a plurality of front connectors and rear connectors; the spraying pipe set comprises a plurality of front spraying pipes and a plurality of rear spraying pipes, the front spraying pipes and the rear spraying pipes communicate with the front connector and the rear connector through flexible pipes correspondingly, and spraying sections of the front spraying pipes extend into the spraying pipe inlet pipe on the front wall and are used for spraying the heat exchanger. And the spraying section of the rear spraying pipe extends from the spraying pipe inlet pipe on the rear wall and is used for spraying the air distribution plate.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, and in particular to a fluidized bed with a circulating cleaning device. Background Technology

[0002] In the process of drying wet solid particles in a fluidized bed, the high humidity of the solid particles makes them prone to clumping. When the clumped solid particles are blown into the fluidized state through the air distribution plate, they are easily stuck in the gaps of the heat exchange tubes of the heat exchanger. In addition, some solid materials are also easily stuck inside the air distribution plate and cannot be blown into the fluidized state for the drying process.

[0003] Furthermore, due to the long working cycle of the fluidized bed, more and more agglomerates accumulate on the heat exchanger and air distribution plate, severely affecting the heat exchange performance of the fluidized bed and the air permeability of the air distribution plate, reducing the heat exchange capacity and production efficiency of the fluidized bed, and thus reducing production capacity. The large volume and harsh internal environment of the fluidized bed increase the difficulty of cleaning it. Utility Model Content

[0004] In view of this, the present invention provides a fluidized bed with a circulating cleaning device, which is used to solve the problem of the difficulty in cleaning agglomerates in the fluidized bed.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] This application provides a fluidized bed with a circulating cleaning device, comprising:

[0007] The fluidized bed body has several spray pipe inlets on its front and rear outer walls, and water outlet pipes and sewage discharge pipes connected in sequence at the bottom. It has several sets of heat exchangers inside and air distribution plates at the bottom.

[0008] The overflow tank is located on the outside of the fluidized bed body. The inside is divided into an inlet tank and an outlet tank by a dividing plate. The height of the dividing plate is lower than the top of the overflow tank, and the drain outlet of the drain pipe extends into the outlet tank.

[0009] A water pump, with its input end connected to the water inlet tank and its output end connected to the water inlet pipe.

[0010] Water supply system, including:

[0011] The connector is connected to the water inlet pipe and has several front and rear connectors.

[0012] The spray pipe assembly includes several front spray pipes and several rear spray pipes. Both the front and rear spray pipes are connected to the front connector and the rear connector respectively through flexible pipes. The spray section of the front spray pipe extends from the spray pipe inlet pipe on the front wall of the fluidized bed body and is used to spray the heat exchanger. The spray section of the rear spray pipe extends from the spray pipe inlet pipe on the rear wall of the fluidized bed body and is used to spray the air distribution plate.

[0013] According to the embodiments of this application, the fluidized bed with a circulating cleaning device, by having a dividing plate lower than the top of the overflow tank, allows cleaning water in the outlet tank to flow into the inlet tank, thereby enabling the hot water in the inlet tank to circulate and clean the heat exchanger and air distribution plate. This saves water resources for cleaning the fluidized bed itself. Furthermore, the simultaneous automated circulating cleaning of the front and rear spray pipes shortens the cleaning time for the heat exchanger and air distribution plate. Compared to manual cleaning, this reduces the workload of cleaning the heat exchanger and air distribution plate, saves on manual cleaning costs, and ensures the safety of cleaning the heat exchanger and air distribution plate.

[0014] In some embodiments of this application, each group of heat exchangers is provided with two opposite heat exchangers and a spray channel is formed between the two heat exchangers. The front spray pipe extends into the spray channel, and a first nozzle is provided on both sides of the spray section of the front spray pipe. The nozzle of the first nozzle faces the heat exchanger on the same side.

[0015] In some embodiments of this application, the rear spray pipe is located above the air distribution plate, and a second nozzle is provided on both sides of the spray section of the rear spray pipe, with the nozzle of the second nozzle facing the air distribution plate.

[0016] In some embodiments of this application, the front spray pipe and the rear spray pipe are provided with a first flange at one end located outside the fluidized bed body, and a second flange is provided at the end of the spray pipe inlet pipe away from the fluidized bed body. The first flange and the second flange are fastened together by clamps.

[0017] In some embodiments of this application, the sewage pipe has a first sewage branch pipe and several second sewage branch pipes. The second sewage branch pipes are located on the outer peripheral wall of the first sewage branch pipe. One end of the second sewage branch pipe is connected to the first sewage branch pipe, and the other end of the second sewage branch pipe is connected to the outlet pipe. Each second sewage branch pipe is provided with a first gate valve.

[0018] In some embodiments of this application, the fluidized bed with a circulating cleaning device further includes a cold water pipe and a steam pipe. One end of the cold water pipe is connected to an external water source, and the other end extends into the water inlet tank. One end of the steam pipe is connected to a steam device, and the other end extends into the water inlet tank.

[0019] In some embodiments of this application, a second gate valve is provided on the water inlet pipe.

[0020] In some embodiments of this application, a first descaling pipe and a second descaling pipe are connected to the bottom of the outer peripheral wall of the overflow tank. The first descaling pipe is connected to the outlet tank and is equipped with a third gate valve. The second descaling pipe is connected to the inlet tank and is equipped with a fourth gate valve.

[0021] The advantages of this invention compared to existing technologies are as follows: Firstly, it saves water resources for cleaning the fluidized bed body. Secondly, by using a circulating cleaning device for automated circulating cleaning, it shortens the time required to clean the heat exchanger and air distribution plate; reduces the workload of cleaning the heat exchanger and air distribution plate; saves on the cost of manual cleaning; and ensures the safety of cleaning the heat exchanger and air distribution plate. Attached Figure Description

[0022] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0023] Figure 1 This is a schematic diagram of a fluidized bed with a circulating cleaning device provided in an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the structure of the fluidized bed body provided in the embodiments of this application;

[0025] Figure 3 A top view of the front spray pipe provided in an embodiment of this application;

[0026] Figure 4 This is a top view of the rear spray pipe provided in an embodiment of this application.

[0027] The attached figures are labeled as follows:

[0028] 1. Fluidized bed body; 11. Spray pipe inlet; 12. Water outlet; 13. Sewage pipe; 131. First sewage branch pipe; 132. Second sewage branch pipe; 1321. First gate valve; 14. Heat exchanger; 15. Air distribution plate;

[0029] 2. Overflow tank; 21. Inlet tank; 22. Outlet tank; 23. Divider plate;

[0030] 3. Water pump; 31. Input end; 32. Output end; 33. Inlet pipe; 331. Second gate valve

[0031] 4. Water supply system; 42. Connectors; 421. Front connector; 422. Rear connector; 43. Sprinkler pipe assembly; 431. Front sprinkler pipe; 4311. First sprinkler head; 432. Rear sprinkler pipe; 4321. Second sprinkler head; 44. Flexible pipe; 45. Clamps;

[0032] 5. Cold water pipe;

[0033] 6. Steam pipe;

[0034] 7. First drain pipe; 71. Third gate valve;

[0035] 8. Second drain pipe; 81. Fourth gate valve;

[0036] f1, First flange; f2, Second flange. Detailed Implementation

[0037] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0038] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0039] In the description of the embodiments of this application, the term "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of a single item or a plurality of items. For example, at least one of a, b, or c can mean: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, and c can be a single item or a plurality of items.

[0040] In the description of the embodiments of this application, the term "and / or" refers to and covers any and all possible combinations of one or more of the associated listed items. The term "and / or" describes an association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "or" relationship.

[0041] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, "linking" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after the connection. Furthermore, the directional terms mentioned in the embodiments of this application, such as "inner" and "outer," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0042] In the description of embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0043] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of a fluidized bed with a circulating cleaning device provided in an embodiment of this application. Figure 2 This is a schematic diagram of the structure of the fluidized bed body 1 provided in the embodiment of this application. The fluidized bed is provided with several sets of heat exchangers 14 (the structure of the heat exchangers 14 is shown in the figure with dashed lines because the heat exchangers 14 are located inside the fluidized bed 1), and the bottom of the inner cavity of the fluidized bed 1 is provided with an air distribution plate 15. The bottom of the fluidized bed 1 is connected in sequence to the water outlet pipe 12 and the sewage pipe 13.

[0044] Specifically, a blower (the blower is a known technology and will not be described in detail here) is provided below the air distribution plate 15. The air distribution plate 15 has several small holes. The air blown by the blower passes through the small holes of the air distribution plate 15 and enters the inner cavity of the fluidized bed, blowing the wet solid material in the inner cavity into a fluidized state (i.e., a floating state). During the fluidization process, the wet solid material is dried into dry solid material by the heat emitted by the heat exchanger 14 and the hot air blown out by the air distribution plate.

[0045] However, wet solid materials are prone to agglomeration due to their high moisture content. When these agglomerated solid particles are blown into the fluidized state, they can become stuck in the gaps of the heat exchange tubes in heat exchanger 14. Furthermore, some solid materials can easily get stuck in the small holes on the air distribution plate 15, preventing them from being blown into the fluidized state for the drying process. Moreover, because the working cycle of the fluidized bed is relatively long, the amount of agglomerates accumulating on the heat exchanger 14 and air distribution plate 15 increases significantly. This severely affects the heat exchange performance of the fluidized bed and the air permeability of the air distribution plate 15, thereby reducing the fluidized bed's production capacity.

[0046] In existing technologies, solid materials on the heat exchanger 14 and air distribution plate 15 are typically cleaned manually. The resulting wastewater flows sequentially into the outlet pipe 12 and drain pipe 13 below the fluidized bed, with the drain pipe 13 discharging the wastewater outside the fluidized bed. This wastes water resources. Furthermore, because the fluidized bed is a large piece of equipment, manual cleaning is time-consuming, reducing its production capacity. The internal environment of the fluidized bed is harsh, increasing the workload of manual cleaning. Additionally, the presence of conductive devices within the fluidized bed's interior poses significant safety hazards during manual cleaning.

[0047] To solve the above problems, the technical solution of the fluidized bed with a circulating cleaning device provided in the embodiments of this application is as follows: the fluidized bed includes a fluidized bed body 1, an overflow tank 2, a water pump 3, and a water supply system 4.

[0048] The fluidized bed body 1 is provided with several spray pipe inlets 11 on its front and rear outer walls, and the spray pipe inlets 11 are connected to the inner cavity of the fluidized bed body 1.

[0049] The overflow tank 2 is located on the outside of the fluidized bed body 1, and the interior of the overflow tank 2 is divided into an inlet tank 21 and an outlet tank 22 by a dividing trough. The height of the dividing plate 23 is lower than the top of the overflow tank 2.

[0050] The bottom of the fluidized bed body 1 is connected in sequence to the water outlet pipe 12 and the sewage outlet pipe 13, and the sewage outlet of the sewage outlet pipe 13 extends into the water outlet tank 22. Specifically, the sewage outlet pipe 13 has a first sewage outlet branch pipe 131 and several second sewage outlet branch pipes 132. The second sewage outlet branch pipes 132 are located on the outer peripheral wall of the first sewage outlet branch pipe 131. One end of the second sewage outlet branch pipe 132 is connected to the first sewage outlet branch pipe 131, and the other end of the second sewage outlet branch pipe 132 is connected to the water outlet pipe 12.

[0051] In some examples, each second drain branch pipe 132 may be equipped with a first gate valve 1321. Specifically, when cleaning the fluidized bed, the first gate valve 1321 is in the open state, ensuring that the cleaning water in the fluidized bed body 1 can flow into the outlet tank 22 through the drain pipe 13, avoiding waste of water resources. When the cleaning work is completed, during fluidized bed operation, the first gate valve 1321 is in the closed state, ensuring the sealing of the fluidized bed cavity and preventing the air blown into the drain pipe 13 during the drying process, which would prevent the material from being blown into a fluidized state. Users can open and close the first gate valve 1321 according to actual usage, enhancing the convenience and flexibility of operation.

[0052] The aforementioned water pump 3 has an input end 31 and an output end 32. The input end 31 of the water pump 3 is connected to the water inlet tank 21 of the overflow tank 2, and the output end 32 is connected to the water inlet pipe 33.

[0053] In some examples, a second gate valve 331 may also be provided on the water inlet pipe 33. The second gate valve 331 is used to connect and disconnect the medium between the water pump 3 and the water inlet pipe 33. Furthermore, the second gate valve 331 can also be used to control the flow rate of hot water (hereinafter referred to as cleaning water) in the water inlet pipe 33. In this way, the structure is simple, easy to operate, and the structure of the water inlet pipe 33 is simplified.

[0054] Please continue reading. Figure 1 and Figure 2 The aforementioned water supply system 4 includes a connector 42 connected to the inlet pipe 33 and a spray pipe assembly 43. The connector 42 is provided with several front connectors 421 and rear connectors 422. The spray pipe assembly 43 includes several front spray pipes 431 and several rear spray pipes 432. Both the front spray pipes 431 and the rear spray pipes 432 are connected to the front connectors 421 and 422 respectively via flexible pipes 44. The spray section of the front spray pipe 431 extends from the spray pipe inlet pipe 11 on the front wall of the fluidized bed body 1 and is used to spray the heat exchanger 14. The spray section of the rear spray pipe 432 extends from the spray pipe inlet pipe 11 on the rear wall of the fluidized bed body 1 and is used to spray the air distribution plate 15.

[0055] It is worth noting that, based on the characteristics of flexible components—large deformation and resistance to breakage—the spray pipe assembly 43 and the connector 42 are connected by a flexible tube 44. The flexible tube 44 provides deformation capacity for the installation and removal of the front spray pipe 431 and the rear spray pipe 432 on the fluidized bed body 1. Simultaneously, it eliminates the constraints imposed on the user when moving the front spray pipe 431 and the rear spray pipe 432.

[0056] For example, the water inlet pipe 33 and the connector 42 can be integrally formed, which improves the connection strength between the water inlet pipe 33 and the connector 42, simplifies the processing technology, and reduces manufacturing costs. Alternatively, the water inlet pipe 33 and the connector 42 can be separate structures, which can be connected by welding, snap-fitting, or bonding.

[0057] Based on this, please continue to refer to Figure 2 and Figure 3 The fluidized bed may also include a cold water pipe 5 and a steam pipe 6. One end of the cold water pipe 5 is connected to an external water source, and the other end extends into the inlet tank 21. One end of the steam pipe 6 is connected to a steam device, and the other end extends into the inlet tank 21. In this way, since the solid particles inside the fluidized bed body 1 contain chemical components and have the characteristic of easily melting when heated, the cold water flowing into the inlet tank 21 from the cold water pipe 5 is heated into hot water by steam, which is beneficial for dissolving the agglomerates on the heat exchanger 14 and the air distribution plate 15, thereby improving the efficiency of cleaning the heat exchanger 14 and the air distribution plate 15.

[0058] For example, the steam in the steam pipe 6 can be 0.6 MPa steam; and the steam pipe 6 can control the heating temperature of the cold water in the water inlet tank 21 to 65℃~70℃, for example, 65℃, 66℃, 67℃, 68℃, 69℃ or 70℃, etc. In this way, it can prevent the cleaning water temperature from being too low and causing it to be unable to dissolve and clump, and it can also prevent the cleaning water temperature from being too high and damaging the internal components of the fluidized bed body 1.

[0059] In summary, the cleaning process of the fluidized bed is as follows: under the drive of the water pump 3, the input end 31 of the water pump 3 draws the hot water in the water inlet tank 21 into the water pump 3, and the hot water is output from the output end 32 of the water pump 3 and flows into the water inlet pipe 33, the connector 42 and the flexible pipe 44 in sequence.

[0060] Subsequently, some of the hot cleaning water flows from the flexible pipe 44 into the front spray pipe 431 to clean the heat exchanger 14, and some hot water flows from the soft water pipe into the rear spray pipe 432 to clean the air distribution plate 15.

[0061] After cleaning, the cleaning water flows sequentially into the outlet pipe 12 and the drain pipe 13, and then flows from the drain pipe 13 into the outlet tank 22. When the level of the cleaning water flowing into the outlet tank 22 exceeds the height of the dividing plate 23, the cleaning water in the outlet tank 22 will overflow into the inlet tank 21. The cleaning water flowing into the inlet tank 21 will be circulated back into the inlet pipe 33 under the drive of the water pump 3. The above cleaning process is repeated until the cleaning water flowing into the outlet tank 22 is no longer mixed with solid particles. That is, the clumps in the heat exchanger 14 and the air distribution plate 15 are completely cleaned.

[0062] In this way, by ensuring that the height of the dividing plate 23 is lower than the top of the overflow tank 2, the cleaning water in the outlet tank 22 flows into the inlet tank 21, thereby enabling the hot water in the inlet tank 21 to circulate and clean the heat exchanger 14 and the air distribution plate 15. This saves water resources for cleaning the fluidized bed body 1. On the other hand, the front spray pipe 431 and the rear spray pipe 432 simultaneously perform automated circulation cleaning, shortening the time for cleaning the heat exchanger 14 and the air distribution plate 15. Compared with manual cleaning, this reduces the workload of cleaning the heat exchanger 14 and the air distribution plate 15, saves the cost of manual cleaning, and ensures the safety of cleaning the heat exchanger 14 and the air distribution plate 15.

[0063] Please see Figure 3 and Figure 4 , Figure 3 This is a top view of the front spray pipe provided in an embodiment of this application. Figure 4 This is a top view of the rear spray pipe provided in an embodiment of this application. In some embodiments, two heat exchangers 14 are provided opposite to each other, and a spray channel is formed between the two heat exchangers 14. The front spray pipe 431 extends into the spray channel, and a first nozzle 4311 is provided on both sides of the spray section of the front spray pipe 431, with the nozzle of the first nozzle 4311 facing the heat exchanger 14 on the same side.

[0064] For example, the included angle between the first nozzles 4311 on both sides of the spray section of the front spray pipe 431 can be designed to be 120° to 180°. For example, the included angle can be 120°, 130°, 140°, 150°, 160°, 170° or 180°.

[0065] In some examples, at least two front spray pipes 431 can be provided between the two heat exchangers 14. The more front spray pipes 431 there are, the more first spray heads 4311 there are, which is more conducive to thoroughly cleaning the heat exchangers 14.

[0066] In this way, by directing the nozzle of the first spray head 4311 toward the heat exchanger 14 on the same side, one front spray pipe 431 can clean two heat exchangers 14 at the same time, which improves the efficiency of cleaning the heat exchangers 14 and further shortens the time of cleaning the heat exchangers 14.

[0067] Furthermore, the rear spray pipe 432 is located above the air distribution plate 15, and the spray section of the rear spray pipe 432 is provided with a second nozzle 4321 on both sides, with the nozzle of the second nozzle 4321 facing the air distribution plate 15.

[0068] For example, the included angle between the second nozzles 4321 on both sides of the spray section of the rear spray pipe 432 can be designed to be 45°.

[0069] ~90°, for example, the included angle can be 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85° or 90°.

[0070] In some examples, provided that the lateral space of the rear wall allows, the number of rear spray pipes 432 can be set to multiple. The more rear spray pipes 432 there are, the more second nozzles 4321 there are, which is more conducive to thoroughly cleaning the air distribution plate 15.

[0071] In this way, by directing the nozzle of the second spray head 4321 toward the air distribution plate 15, a rear spray pipe 432 can clean the air distribution plate 15 through multiple second spray heads 4321, which helps to improve the efficiency of cleaning the air distribution plate 15 and further shortens the time for cleaning the heat exchanger 14.

[0072] Please continue reading. Figure 3 and Figure 4 In some embodiments, the front spray pipe 431 and the rear spray pipe 432 are provided with a first flange f1 at one end outside the fluidized bed body 1. The first flange f1 can be used as a "steering wheel" to rotate the front spray pipe 431 and the rear spray pipe 432. Specifically, by rotating the first flange f1, the user can rotate the front spray pipe 431 or the rear spray pipe 432 360° within the spray channel. By rotating the first flange f1 on the front spray pipe 431 and the rear spray pipe 432 respectively, the angle between the first nozzle 4311 and the heat exchanger 14, and the angle between the second nozzle 4321 and the air distribution plate 15 can be adjusted. In this way, users can adjust the positions of the front spray pipe 431 spraying the heat exchanger 14 and the rear spray pipe 432 spraying the air distribution plate 15 outside the fluidized bed, expanding the range of the front spray pipe 431 spraying the heat exchanger 14 and the rear spray pipe 432 spraying the air distribution plate 15. This allows the front spray pipe 431 to spray cleaning water evenly onto the heat exchanger 14 and the rear spray pipe 432 to spray hot water evenly onto the air distribution plate 15, ensuring that the cleaning water can thoroughly clean the heat exchanger 14 and the air distribution plate 15. This improves the convenience of operation and reduces the difficulty of cleaning.

[0073] Furthermore, after the front spray pipe 431 and the rear spray pipe 432 are rotated to a suitable position by means of the first flange f1, in order to prevent the front spray pipe 431 and the rear spray pipe 432 from rotating during the spraying process, a second flange f2 is provided at the end of the spray pipe inlet pipe 11 away from the fluidized bed body 1. The first flange f1 and the second flange f2 are fastened together by a clamp 45.

[0074] Specifically, clamp 45 includes a left clamp and a right clamp, one end of which is hinged, and the other end of each clamp is provided with a lug plate. Furthermore, each clamp has a groove inside. When the left and right clamps are assembled, the outer peripheral walls of the first flange f1 and the second flange f2 are embedded in the groove, and the lug plates of the left and right clamps are connected by bolts, thereby tightening the first flange f1 and the second flange f2.

[0075] In this way, by setting the first flange f1, the cleaning water can be precisely distributed, improving the operability of the front spray pipe 431 and the rear spray pipe 432, and making the spraying position of the front spray pipe 431 and the rear spray pipe 432 more flexible. Furthermore, by fastening the first flange f1 and the second flange f2 with clamps 45, the front spray pipe 431 and the rear spray pipe 432 are fixed to the fluidized bed body 1, preventing them from rotating or falling off the fluidized bed body 1 during spraying, thus ensuring the structural stability of the front spray pipe 431 and the rear spray pipe 432.

[0076] Please return to the reference. Figure 1 In some embodiments, the bottom of the outer peripheral wall of the overflow tank 2 is connected to a first scale discharge pipe 7, and the first scale discharge pipe 7 is connected to the water outlet tank 22. Furthermore, a third gate valve 71 is provided on the first scale discharge pipe 7.

[0077] Specifically, when the cleaning water flows from the drain pipe 13 into the outlet tank 22, the clumps washed off in the cleaning water sink to the bottom of the outlet tank 22 under the action of gravity. After the clumps in the outlet tank 22 accumulate to a certain amount, the user can open the third gate valve 71 to allow the clumps to be discharged from the outlet tank 22 through the first scale discharge pipe 7.

[0078] This prevents clumps from accumulating in the outlet tank 22 and reacting chemically with the overflow tank 2, thus ensuring the structural strength of the overflow tank 2. Furthermore, opening or closing the first descaling pipe 7 via the third gate valve 71 simplifies the process of removing clumps from the outlet tank 22, enhancing operational convenience and flexibility.

[0079] To prevent the accumulation of scale in the outlet tank 22 from overflowing into the inlet tank 21 with the cleaning water, a second scale discharge pipe 8 can be connected to the bottom of the outer peripheral wall of the overflow tank 2. The second scale discharge pipe 8 is connected to the inlet tank 21. Furthermore, a fourth gate valve 81 is installed on the second scale discharge pipe 8.

[0080] This prevents clumps from accumulating in the inlet tank 21 and reacting chemically with the overflow tank 2, thus ensuring the structural strength of the overflow tank 2. Furthermore, opening or closing the second drain pipe 8 via the fourth gate valve 81 simplifies the process of removing clumps of solid particles from the outlet tank 22, enhancing operational convenience and flexibility.

[0081] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A fluidized bed having a circulating cleaning device, characterized in that include: The fluidized bed body (1) has several spray pipe inlets (11) on its front and rear outer walls, and the bottom is connected to the water outlet pipe (12) and the sewage pipe (13) in sequence. It has several sets of heat exchangers (14) inside and an air distribution plate (15) at the bottom inside. An overflow tank (2) is located on the outside of the fluidized bed body (1). The inside is divided into an inlet tank (21) and an outlet tank (22) by a dividing plate (23). The height of the dividing plate (23) is lower than the top of the overflow tank (2). The drain outlet of the drain pipe (13) extends into the outlet tank (22). A water pump (3) has its input end (31) connected to the water inlet tank (21) and its output end (32) connected to the water inlet pipe (33). Water supply system (4), including: A connector (42) connected to the water inlet pipe (33) is provided with a plurality of front connectors (421) and rear connectors (422); The spray pipe assembly (43) includes several front spray pipes (431) and several rear spray pipes (432). The front spray pipes (431) and the rear spray pipes (432) are connected to the front connector (421) and the rear connector (422) respectively through flexible pipes (44). The spray section of the front spray pipe (431) extends from the spray pipe inlet pipe (11) on the front wall of the fluidized bed body (1) and is used to spray the heat exchanger (14). The spray section of the rear spray pipe (432) extends from the spray pipe inlet pipe (11) on the rear wall of the fluidized bed body (1) and is used to spray the air distribution plate (15).

2. Fluidized bed with a circulating cleaning device according to claim 1, characterized in that Two heat exchangers are arranged opposite each other and a spray channel is formed between the two heat exchangers (14). The front spray pipe (431) extends into the spray channel. The front spray pipe (431) has a first nozzle (4311) on both sides of the spray section. The nozzle of the first nozzle (4311) faces the heat exchanger (14) on the same side.

3. The fluidized bed with a circulating cleaning device according to claim 1, characterized in that The rear spray pipe (432) is located above the air distribution plate (15). The spray section of the rear spray pipe (432) is provided with a second nozzle (4321) on both sides, and the nozzle of the second nozzle (4321) faces the air distribution plate (15).

4. The fluidized bed having a circulating cleaning device according to claim 1, characterized in that The front spray pipe (431) and the rear spray pipe (432) are provided with a first flange (f1) at one end outside the fluidized bed body (1), and a second flange (f2) is provided at the end of the spray pipe inlet (11) away from the fluidized bed body (1). The first flange (f1) and the second flange (f2) are fastened together by a clamp (45).

5. The fluidized bed having a circulating cleaning device according to claim 1, characterized in that The sewage pipe (13) has a first sewage branch pipe (131) and several second sewage branch pipes (132). The second sewage branch pipes (132) are located on the outer peripheral wall of the first sewage branch pipe (131). One end of the second sewage branch pipe (132) is connected to the first sewage branch pipe (131), and the other end of the second sewage branch pipe (132) is connected to the water outlet pipe (12). Each second sewage branch pipe (132) is provided with a first gate valve (1321).

6. Fluidized bed with a circulating cleaning device according to any one of claims 1-5, characterized in that, Further comprise cold water pipe (5) and steam pipe (6), one end of the cold water pipe (5) is connected to the outside water source, the other end into the water tank (21), one end of the steam pipe (6) is connected to the steam equipment, the other end into the water tank (21).

7. The fluidized bed having a circulating cleaning device according to claim 1, characterized in that The water inlet pipe (33) is provided with a second gate valve (331).

8. The fluidized bed having a circulating cleaning device according to claim 1, characterized in that The bottom of the outer wall of the overflow bucket (2) is connected with a first dirt discharge pipe (7) and a second dirt discharge pipe (8); The first dirt discharge pipe (7) is communicated with the water outlet tank (22), and the first dirt discharge pipe (7) is provided with a third gate valve (71). The second dirt discharge pipe (8) is communicated with the water inlet tank (21), and the second dirt discharge pipe (8) is provided with a fourth gate valve (81).

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