Drying application device with pipeline scale cleaning structure

Abstract

The utility model discloses a drying application device with a pipeline incrustation cleaning structure, relates to the technical field of drying application, and aims to solve the problems of pipeline blockage and low heat efficiency caused by incrustation accumulation of a closed water circulation system. On the basis of a drying room, a water supplementing tank, a circulating hot water pump, an air energy normal-temperature and high-temperature heat pump unit and other components are arranged, detachable connecting sleeves and connecting pipes are arranged on the outer sides of pipelines such as a main water pipe entering the drying room, cross rods are arranged on the inner sides of the pipelines, and the cross rods are matched with a cleaning device composed of a cleaning wiper and a pull rope. During use, the connecting sleeve and the connecting pipe are disconnected, the pull rope is pulled to enable the cleaning eraser to move in a manner of being attached to the inner wall of the pipeline, and scale can be quickly scraped. According to the device, through a convenient incrustation cleaning structure, corrosion of chemical cleaning to the pipeline is avoided, and the maintenance cost is reduced; pipeline heat transfer performance is recovered, and energy utilization efficiency is improved; the drying room has the advantages of being reasonable in structure and high in practicability.

Description

Technical Field

[0001] This utility model belongs to the field of drying application technology, specifically relating to a drying application device with a pipe scale removal structure. Background Technology

[0002] The drying application device is a heating system using a closed-loop hot water cascade circulation system for drying noodles in a drying room. Existing application number CN201310040385.X discloses an air-source heat pump water circulation heating and water circulation condensation dehumidification drying device. This invention discloses a drying device that uses an air-source heat pump water circulation heating system for heating and water circulation condensation dehumidification for dehumidification. During dehumidification, the air in the drying room absorbs heat and its temperature decreases as it flows through the dehumidification finned heat exchanger. When the water in the airflow is below its dew point temperature, it is condensed into water and discharged from the drying room. The dehumidified air then flows through the heating finned heat exchanger and is heated again, resulting in a decrease in humidity but almost no decrease in temperature after dehumidification. This saves energy and reduces consumption, produces no waste gas or residue, causes no environmental pollution, and is easy to operate and control. During installation and relocation, only the connecting water pipes and circulation pump need to be disassembled and reassembled; the refrigerant pipes do not need to be disassembled and relocated, making installation and relocation easy. Suitable for drying tobacco, agricultural products, food, etc.

[0003] An existing drying application device with a pipe scale removal structure has the following problems: When the system is running for a long time, due to the closed water circulation, scale will condense on the inner walls of the main water pipe entering the drying chamber, the main pipe entering the ambient temperature heat pump unit, the main water pipe exiting the drying chamber, and the main pipe entering the high temperature heat pump unit. Moreover, the system lacks a cleaning device, and the scale will become thicker and thicker, which will lead to a reduction in the water flow and blockage of the water pipes. Utility Model Content

[0004] The purpose of this utility model is to provide a drying application device with a pipe scale removal structure to solve the problem mentioned in the background art that when the system is running for a long time, due to the closed water circulation, scale will condense on the inner wall of the main water pipe entering the drying chamber, the main pipe entering the ambient temperature heat pump unit, the main water pipe exiting the drying chamber, and the main pipe entering the high temperature heat pump unit. Moreover, the system lacks a cleaning device, and the scale will become thicker and thicker, which will lead to a reduction in water flow and blockage of the water pipes.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a drying application device with a pipe scale removal structure, comprising a drying chamber, a water replenishment tank located at the lower right side of the drying chamber, a main water pipe exiting the drying chamber located below the water replenishment tank, a water replenishment valve located at the connection between the main water pipe exiting the drying chamber and the water replenishment tank, a circulating hot water pump located at the left end of the main water pipe exiting the drying chamber, and a main inlet pipe for a room temperature heat pump unit located to the left of the circulating hot water pump. A maintenance valve is installed at the connection point between the main pipe of the pump unit and the circulating hot water pump. An air-source ambient temperature heat pump unit is installed at the lower end of the main pipe of the ambient temperature heat pump unit. An air-source ambient temperature heat pump unit main pipe is installed at the upper left side of the air-source ambient temperature heat pump unit. Maintenance valve A is installed at the connection point between the main pipe and the air-source ambient temperature heat pump unit. An air-source high temperature heat pump unit is installed at the left end of the main pipe of the ambient temperature heat pump unit. A main water pipe for the drying chamber is located at the upper left side. A maintenance valve B is installed at the connection point between the main water pipe for the ambient temperature heat pump unit and the main water pipe for the drying chamber and the air-source high-temperature heat pump unit. A flow control valve is located at the upper right side of the main water pipe for the drying chamber. An integrated radiator is located above the flow control valve. Connecting sleeves are installed on the outer sides of the main water pipe for the drying chamber, the main water pipe for the ambient temperature heat pump unit, the main water pipe for the drying chamber, and the main water pipe for the high-temperature heat pump unit. A connecting pipe is provided at the connection point of the main water pipe, the main pipe of the high-temperature heat pump unit, and the connecting sleeve. A crossbar is provided at the middle inner position of the main water pipe of the drying room, the main pipe of the ambient temperature heat pump unit, the main water pipe of the drying room, and the main pipe of the high-temperature heat pump unit. A cleaning device is provided on the left side of the crossbar. The cleaning device includes a cleaning wipe and a pull rope. Pull ropes are provided on the left and right sides of the cleaning wipe. The circulating hot water pump, the ambient temperature air source heat pump unit, and the high-temperature air source heat pump unit are powered by connecting to an external power source.

[0006] Compared with the prior art, this utility model provides a drying application device with a pipe scale removal structure, which has the following beneficial effects:

[0007] By installing a cleaning device consisting of a cleaning wiping cloth and a pull rope on the inner wall of the pipes, scale can be quickly and conveniently wiped away from the inner walls of pipes such as the main water pipe leading to the drying room and the main pipe leading to the ambient temperature heat pump unit. Users simply need to disconnect the detachable pipe connection structure formed by the connecting sleeve and the connecting pipe, untie the pull rope from the crossbar, and pull it. The cleaning wiping cloth will then move along the inner wall of the pipe to scrape away the scale. No complicated tools or cumbersome operations are required, effectively solving the problems of low efficiency in traditional manual cleaning and easy corrosion of pipes by chemical cleaning, significantly improving the efficiency and effectiveness of scale removal.

[0008] The detachable connecting sleeve and pipe structure eliminates the need for extensive disassembly of the entire system during pipe cleaning; only partial pipe disconnection is required, significantly reducing equipment maintenance time and labor costs. Simultaneously, it avoids frequent use of chemical cleaning agents, reducing the risk of pipe corrosion, extending the overall lifespan of the drying application unit, and decreasing equipment replacement and repair costs, thus saving operating costs for enterprises.

[0009] Timely removal of scale from the inner walls of pipes can effectively prevent problems such as reduced pipe diameter, decreased water flow, and pipe blockage caused by scale accumulation. This ensures smooth circulation of hot water within the system, maintains stable heating performance in the drying room, avoids equipment downtime due to pipe malfunctions, improves production continuity, and reduces production losses caused by equipment failures.

[0010] Because scale has extremely low thermal conductivity, timely cleaning of scale can restore the good heat transfer performance of pipes, reduce heat loss during the transfer process, and enable the heat generated by air source heat pump units at normal and high temperatures to be transferred to the drying room more efficiently, thereby improving the overall energy utilization efficiency of the system, further reducing energy consumption, meeting the current development needs of energy conservation and emission reduction, and enhancing the market competitiveness of the equipment.

[0011] The cleaning wipe is made of metal fiber material and has internal through holes, which effectively removes scale while ensuring that water can flow freely without affecting the normal flow of the medium in the pipe. The crossbar is made of stainless steel and is integrated with the pipe, which has strong corrosion resistance and ensures long-term stable operation of the cleaning device. The pull rope is made of corrosion-resistant and wear-resistant fiber material, which has a long service life and is firmly connected to the cleaning wipe and crossbar. It is easy to operate. The overall structure is scientifically and rationally designed and highly practical. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate 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, but do not constitute a limitation thereof. In the drawings:

[0013] Figure 1 This is a schematic diagram of the front structure of a drying application device with a pipe scale removal structure proposed in this utility model.

[0014] Figure 2 This utility model provides a front view of the drying application device with a pipe scale removal structure after the water pipe is disconnected and the pull rope is pulled out.

[0015] Figure 3 This is a front view of the half-section of the drying application device with a pipe scale removal structure proposed in this utility model, after the water pipe is disconnected and the pull rope is pulled out.

[0016] Figure 4 This is a front view of the water pipe and the connection between the water pipe and the connecting sleeve and connecting pipe in the drying application device with pipe scale removal structure proposed in this utility model.

[0017] Figure 5 This is a front structural diagram of the cleaning device in a drying application device with a pipe scale removal structure proposed in this utility model.

[0018] In the diagram: 1. Circulating hot water pump; 2. Inspection valve; 3. Main pipe for ambient temperature heat pump unit; 4. Ambient temperature air source heat pump unit; 5. Main pipe for high temperature heat pump unit; 6. High temperature air source heat pump unit; 7. Main water pipe for drying room; 8. Flow control valve; 9. Integrated radiator; 10. Drying room; 11. Main water pipe for drying room; 12. Water supply tank; 13. Water supply valve; 14. Inspection valve A; 15. Inspection valve B; 16. Connecting sleeve; 17. Cleaning device; 18. Cleaning wipe; 19. Pull rope; 20. Crossbar; 21. Connecting pipe. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1

[0021] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5This utility model provides a technical solution: a drying application device with a pipe scale removal structure, including a drying chamber 10, a water replenishment tank 12 located on the lower right side of the drying chamber 10, a main water pipe 11 exiting the drying chamber located below the water replenishment tank 12, a water replenishment valve 13 located at the connection between the main water pipe 11 and the water replenishment tank 12, a circulating hot water pump 1 located at the left end of the main water pipe 11, a main inlet pipe 3 for a normal temperature heat pump unit located to the left of the circulating hot water pump 1, a maintenance valve 2 located at the connection between the main water pipe 11, the main inlet pipe 3, and the circulating hot water pump 1, and an air-source heat pump unit 4 located at the lower end of the main inlet pipe 3. At the upper left side of unit 4, a main inlet pipe 3 for the ambient temperature heat pump unit is installed. A maintenance valve A14 is installed at the connection point between the main inlet pipe 3 and the air-source ambient temperature heat pump unit 4. At the left end of the main inlet pipe 3, an air-source high-temperature heat pump unit 6 is installed. At the upper left side of the air-source high-temperature heat pump unit 6, a main water pipe 7 for the drying chamber is installed. A maintenance valve B15 is installed at the connection point between the main inlet pipe 3, the main water pipe 7 for the drying chamber, and the air-source high-temperature heat pump unit 6. At the upper right side of the main water pipe 7 for the drying chamber, an integrated radiator 9 is installed above the flow control valve 8. The main water pipes 7 for the drying chamber, 3 for the ambient temperature heat pump unit, and the main water pipe for the drying chamber are connected. 11. Connecting sleeves 16 are installed on the outer side of the main pipe 5 of the high-temperature heat pump unit. Connecting pipes 21 are installed at the connection points of the main water pipe 7 entering the drying chamber, the main water pipe 3 entering the normal temperature heat pump unit, the main water pipe 11 exiting the drying chamber, the main water pipe 5 entering the high-temperature heat pump unit, and the connecting sleeves 16. Horizontal bars 20 are installed on the inner side of the main water pipe 7 entering the drying chamber, the main water pipe 3 entering the normal temperature heat pump unit, the main water pipe 11 exiting the drying chamber, and the main water pipe 5 entering the high-temperature heat pump unit. A cleaning device 17 is installed on the left side of the horizontal bar 20. The cleaning device 17 includes a cleaning wipe 18 and a pull rope 19. Pull ropes 19 are installed on both sides of the cleaning wipe 18. The circulating hot water pump 1, the air source normal temperature heat pump unit 4, and the air source high-temperature heat pump unit 6 are powered by connecting to an external power source. There are four flow control valves 8, each located on the outside of the main water pipe 7 entering the drying chamber. There are also four integrated radiators 9, each located above one of the four flow control valves 8. Multiple connecting sleeves 16 are provided, located on the outside of the main water pipe 7 entering the drying chamber, the main pipe 3 entering the ambient temperature heat pump unit, the main water pipe 11 exiting the drying chamber, and the main pipe 5 entering the high temperature heat pump unit. Multiple crossbars 20 are provided, located on the inside of the main water pipe 7 entering the drying chamber, the main pipe 3 entering the ambient temperature heat pump unit, the main water pipe 11 exiting the drying chamber, and the main pipe 5 entering the high temperature heat pump unit. All crossbars 20 are made of stainless steel and are corrosion-resistant.Multiple crossbars 20 are connected to the main water pipe 7 entering the drying chamber, the main pipe 3 entering the ambient temperature heat pump unit, the main water pipe 11 exiting the drying chamber, and the main pipe 5 entering the high temperature heat pump unit via an integrated connection. The cleaning wipe 18 is made of metal fiber material and has wear-resistant characteristics.

[0022] When the cleaning device 17 needs to be disassembled and replaced, follow the above-described steps of disconnecting the pipe and removing the pull rope 19 to remove the cleaning wipe 18 and pull rope 19 from the pipe. When replacing the cleaning wipe 18, ensure that the material and size of the new cleaning wipe 18 meet the requirements. Place the new cleaning wipe 18 onto the pull rope 19, then re-thread the pull rope 19 through the rope hole of the crossbar 20 and secure it. Finally, restore the pipe connection according to the pipe connection procedure. The cleaning wipe 18 is made of metal fiber material and has multiple through holes with a diameter of 3-5mm, evenly distributed throughout. Water flows normally through the pipe via these through holes, and the presence of the cleaning wipe 18 does not significantly obstruct the flow of the medium within the pipe. Experimental tests show that under normal water flow velocity, the water pressure loss in the pipe before and after installing the cleaning device is less than 5%, which does not affect the normal operation of the system.

[0023] The connecting sleeve 16 is a flange-type connecting sleeve, including an upper semi-annular flange and a lower semi-annular flange, which are detachably connected by bolts. A sealing groove is provided on the inner wall of the connecting sleeve 16, and a rubber sealing ring is installed in the sealing groove to ensure a tight fit with the outer walls of the main water pipe 7 entering the drying chamber, the main pipe 3 entering the ambient temperature heat pump unit, the main water pipe 11 exiting the drying chamber, and the main pipe 5 entering the high temperature heat pump unit, thus ensuring the sealing of the connection.

[0024] Example 2

[0025] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5This utility model provides a technical solution: a drying application device with a pipe scale removal structure. Two pull ropes 19 are made of fiber material and are corrosion-resistant and wear-resistant. The two pull ropes 19 are connected to the cleaning wipe 18 via an integrated connection. The two pull ropes 19 are also connected to two crossbars 20 via a winding connection. The crossbars 20 are U-shaped stainless steel rods. Both ends of the crossbars 20 are fixedly connected to the inner walls of pipes such as the main water pipe 7 entering the drying chamber, the main pipe 3 entering the ambient temperature heat pump unit, the main water pipe 11 exiting the drying chamber, and the main pipe 5 entering the high temperature heat pump unit by welding. A rope-passing hole with a diameter of 6mm is provided in the middle of the crossbars 20 for threading the pull ropes 19. The pull ropes 19 are made of corrosion-resistant and wear-resistant fiber material. Both ends of the pull ropes 19 pass through the rope-passing holes on both sides of the crossbars 20, and are then knotted and fixed on the outside of the crossbars 20, forming a pull rope loop that allows the cleaning wipe 18 to slide. The cleaning wipe 18 is set inside the pull rope ring and can move on the inner wall of the pipe by the pull rope 19. The new type of cleaning device 17 can quickly wipe the scale accumulated on the inner wall of the main water pipe 7 entering the drying room, the main pipe 3 entering the normal temperature heat pump unit, the main water pipe 11 exiting the drying room, and the main pipe 5 entering the high temperature heat pump unit. The connecting sleeve 16 and the connecting pipe 21 can disconnect the main water pipe 7 entering the drying room, the main pipe 3 entering the normal temperature heat pump unit, the main water pipe 11 exiting the drying room, and the main pipe 5 entering the high temperature heat pump unit, and flush out the scale.

[0026] The connecting pipe 21 is a short connecting pipe with external threads processed at both ends. The pipe openings of the corresponding connection parts of the main water pipe 7 entering the drying room, the main pipe 3 entering the ambient temperature heat pump unit, the main water pipe 11 exiting the drying room, and the main pipe 5 entering the high temperature heat pump unit are processed with internal threads. The connecting pipe 21 is screwed to the internal threads of the pipes through the external threads at both ends to realize the detachable connection between the pipes.

[0027] The working principle and usage process of this utility model are as follows: After installation, the circulating hot water pump 1, the air source heat pump unit 4 (normal temperature), and the air source heat pump unit 6 are powered by an external power source. The circulating hot water pump 1 draws water from the water tank 12 and sends it to the air source heat pump unit 6 and the air source heat pump unit 4 through the main pipe 3 and the main pipe 5 of the air source heat pump unit. The air source heat pump unit 6 heats the water to a temperature of 80 to 95 degrees Celsius. The main water pipe 7 heats the drying chamber 10, and the cooled water is then sent to the air-source heat pump unit 4 for secondary heating, improving heat recovery efficiency and saving energy. After prolonged use of the system to heat the drying chamber 10, the user can disconnect the main water pipe 7, the main pipe 3 of the air-source heat pump unit, the main water pipe 11 of the drying chamber, and the main pipe 5 of the high-temperature heat pump unit via the connecting sleeve 16 and connecting pipe 21, and then pull the rope 19 from the crossbar. Untie the top 20 and pull the two ropes 19 to move the cleaning wiping 18 against the inner wall of the main water pipe 7 entering the drying chamber, the main pipe 3 entering the ambient temperature heat pump unit, the main water pipe 11 exiting the drying chamber, and the main pipe 5 entering the high temperature heat pump unit. During this repeated movement, the cleaning wiping 18 scrapes away the scale inside the main water pipes 7 entering the drying chamber, 3 entering the ambient temperature heat pump unit, 11 exiting the drying chamber, and 5 entering the high temperature heat pump unit, effectively cleaning the condensed scale. Afterwards, the user can reconnect the main water pipes 7 entering the drying chamber and 3 entering the ambient temperature heat pump unit. The main water pipe 11 exits the drying chamber and the main pipe 5 enters the high-temperature heat pump unit. The valve is opened to allow water to flow through, and the scale wiped off is flushed out from the ends of the main water pipe 7 entering the drying chamber, the main pipe 3 entering the ambient temperature heat pump unit, the main water pipe 11 exiting the drying chamber, and the main pipe 5 entering the high-temperature heat pump unit. This completes the cleaning of the main water pipe 7 entering the drying chamber, the main pipe 3 entering the ambient temperature heat pump unit, the main water pipe 11 exiting the drying chamber, and the main pipe 5 entering the high-temperature heat pump unit. The cleaning wiping 18 has many through holes in the middle, and water can flow through the through holes, so the presence of the cleaning wiping 18 will not obstruct the flow of water.

[0028] The procedure for disconnecting and connecting pipes is as follows: "When it is necessary to disconnect the main water pipe 7 entering the drying room, the main pipe 3 entering the ambient temperature heat pump unit, the main water pipe 11 exiting the drying room, and the main pipe 5 entering the high temperature heat pump unit for cleaning, first use a tool to loosen the bolt group on the connecting sleeve 16 to separate the upper and lower half-ring flanges. Then, rotate the connecting pipe 21 counterclockwise from the threaded interface of the pipe to separate the pipe into sections. After cleaning, rotate the connecting pipe 21 clockwise into the threaded interface of the pipe. Then, align the upper and lower half-ring flanges of the connecting sleeve 16 and tighten them with bolts. At the same time, the rubber sealing ring ensures the sealing performance of the connection under the compression action."

[0029] After disconnecting the pipe, pull the rope 19 out of the rope hole in the crossbar 20. Since the two ends of the rope 19 are knotted and fixed on the outside of the crossbar 20, simply untie one end of the knot to remove the rope 19 from the crossbar 20. Then, hold both ends of the rope 19 and pull it back and forth, causing the cleaning wipe 18 to move back and forth along the trajectory of the rope 19 on the inner wall of the pipe. During the movement, the cleaning wipe 18 scrapes away the scale on the inner wall of the pipe. After cleaning, thread the rope 19 back into the rope hole in the crossbar 20 and tie a knot on the outside to fix it, restoring the cleaning device to its installed state.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drying application device with a pipe scale cleaning structure, comprising a drying chamber (10), characterized in that: A water supply tank (12) is located on the lower right side of the drying chamber (10). A main water pipe (11) for the drying chamber is located below the water supply tank (12). A water supply valve (13) is located at the connection between the main water pipe (11) and the water supply tank (12). A circulating hot water pump (1) is located at the left end of the main water pipe (11). A main pipe (3) for the ambient temperature heat pump unit is located to the left of the circulating hot water pump (1). The main water pipe (11) for the drying chamber and the main pipe (3) for the ambient temperature heat pump unit are connected to the main water pipe (11) for the drying chamber. A maintenance valve (2) is provided at the connection position of the circulating hot water pump (1). An air source ambient temperature heat pump unit (4) is provided at the lower end of the main pipe (3) of the ambient temperature heat pump unit. An air source ambient temperature heat pump unit (3) is provided at the upper left side of the air source ambient temperature heat pump unit (4). A maintenance valve A (14) is provided at the connection position of the main pipe (3) of the ambient temperature heat pump unit and the air source ambient temperature heat pump unit (4). An air source ambient temperature heat pump unit (4) is provided at the left end of the main pipe (3). A high-temperature heat pump unit (6) is provided with a main water pipe (7) for the drying chamber located on the upper left side of the air-source high-temperature heat pump unit (6). A maintenance valve B (15) is provided at the connection point between the main water pipe (3) for the room temperature heat pump unit and the main water pipe (7) for the drying chamber and the air-source high-temperature heat pump unit (6). A flow control valve (8) is provided on the upper right side of the main water pipe (7) for the drying chamber. An integrated radiator (9) is provided above the flow control valve (8). The main water pipe (7) for the drying chamber and the main water pipe (3) for the room temperature heat pump unit are connected. A connecting sleeve (16) is provided at the outer side of the main water pipe (11) of the drying room and the main pipe (5) of the high temperature heat pump unit. A connecting pipe (21) is provided at the connection position of the main water pipe (7) of the drying room, the main pipe (3) of the room temperature heat pump unit, the main water pipe (11) of the drying room, the main pipe (5) of the high temperature heat pump unit and the connecting sleeve (16). A crossbar (20) is provided at the middle inner side of the main water pipe (7) of the drying room, the main pipe (3) of the room temperature heat pump unit, the main water pipe (11) of the drying room and the main pipe (5) of the high temperature heat pump unit.

2. A drying application device with a pipe scale cleaning structure according to claim 1, characterized in that: A cleaning device (17) is provided on the left side of the crossbar (20). The cleaning device (17) includes a cleaning wiping cloth (18) and a pull rope (19). Pull ropes (19) are provided on the left and right sides of the cleaning wiping cloth (18). The cleaning wiping cloth (18) has a hollow through hole inside, allowing water to flow freely. The circulating hot water pump (1), the air source ambient temperature heat pump unit (4), and the air source high temperature heat pump unit (6) are powered by connecting to an external power source.

3. A drying application device with a pipe scale cleaning structure according to claim 1, characterized in that: There are four flow control valves (8), and the four flow control valves (8) are respectively located on the outside of the main water pipe (7) of the drying room.

4. The drying application device with a pipe scale removal structure according to claim 1, characterized in that: There are four integrated heat sinks (9), and the four integrated heat sinks (9) are respectively located on the upper side of the four flow control valves (8).

5. A drying application device with a pipe scale cleaning structure according to claim 1, characterized in that: Multiple connecting sleeves (16) are provided, and the multiple connecting sleeves (16) are respectively located at the external positions of the main water pipe (7) entering the drying room, the main pipe (3) entering the normal temperature heat pump unit, the main water pipe (11) exiting the drying room, and the main pipe (5) entering the high temperature heat pump unit.

6. A drying application device with a pipe scale cleaning structure according to claim 2, characterized in that: There are multiple crossbars (20), and the multiple crossbars (20) are respectively located on the inner side of the main water pipe (7) entering the drying room, the main pipe (3) entering the normal temperature heat pump unit, the main water pipe (11) exiting the drying room, and the main pipe (5) entering the high temperature heat pump unit.

7. A drying application device with a pipe scale cleaning structure according to claim 2, characterized in that: The multiple crossbars (20) are made of stainless steel and have corrosion resistance. The multiple crossbars (20) are connected to the main water pipe (7) into the drying room, the main pipe (3) into the ambient temperature heat pump unit, the main water pipe (11) out of the drying room, and the main pipe (5) into the high temperature heat pump unit through an integrated connection method.

8. A drying application device with a pipe scale cleaning structure according to claim 2, characterized in that: The cleaning wipe (18) is made of metal fiber material and has wear-resistant properties.

9. A drying application device with a pipe scale cleaning structure according to claim 2, characterized in that: The two pull ropes (19) are made of fiber material and have the characteristics of corrosion resistance and wear resistance. The two pull ropes (19) are connected by an integrated connection method and a cleaning wipe (18). The two pull ropes (19) are connected by a winding connection method and two crossbars (20).

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