Waste heat recovery structure of adsorption type dryer

Abstract

The utility model discloses a waste heat recovery structure of an adsorption dryer, which belongs to the technical field of dryers and comprises a first water storage tank and a second water storage tank which are fixedly arranged on a rack, upper connecting pipes are arranged on two sides of the first water storage tank, an upper connecting hole and a lower connecting hole are respectively arranged on a first adsorption tower and a second adsorption tower, and the upper connecting holes are communicated with the lower connecting holes. The upper connecting pipes on the two sides are fixedly connected with the upper connecting holes correspondingly, conduction pipes are arranged in the first adsorption tower and the second adsorption tower correspondingly, the two ends of each conduction pipe are fixedly connected with the corresponding upper connecting hole and the corresponding lower connecting hole correspondingly, and lower connecting pipes are fixedly arranged on the two sides of the second water storage tank. The lower connecting pipes on the two sides are fixedly connected with the lower connecting holes respectively, water pumps are fixedly arranged on the two sides of the first water storage tank, a controller is fixedly arranged on the machine frame, and the controller is electrically connected to the two water pumps respectively.

Description

Technical Field

[0001] This utility model relates to the field of dryer technology, specifically to a waste heat recovery structure for an adsorption dryer. Background Technology

[0002] The micro-heat regenerative adsorption dryer is a highly efficient, energy-saving, and reliable drying device, particularly suitable for industrial applications requiring high air dryness. Its low gas consumption and low dew point temperature make it an indispensable piece of equipment in many industries.

[0003] A typical micro-heat dryer consists of a frame, two adsorption towers, a heater, and several connecting pipes. Each tower is filled with adsorbent. Compressed air enters one tower for adsorption and drying, where moisture is absorbed by the adsorbent, resulting in the output of dry compressed air. Simultaneously, the other tower undergoes regeneration by heating the adsorbent with a micro-heating method, causing the moisture in the adsorbent to evaporate and be discharged, restoring the adsorbent's adsorption capacity. The two towers alternate between adsorption and regeneration to achieve a continuous supply of dry air.

[0004] However, a large amount of hot gas is present in the heated tower, and the heat in the gas is not effectively utilized, resulting in energy waste.

[0005] Based on this, the present invention designs a waste heat recovery structure for an adsorption dryer to solve the above problems. Utility Model Content

[0006] To achieve the above objectives, this utility model provides the following technical solution: A first water storage tank and a second water storage tank are fixedly mounted on the frame. Upper connecting pipes are provided on both sides of the first water storage tank. Upper connecting holes and lower connecting holes are respectively opened on the first and second adsorption towers. The upper connecting pipes on both sides are fixedly connected to the upper connecting holes. Conducting pipes are provided inside both the first and second adsorption towers. The two ends of the conducting pipes are fixedly connected to the upper connecting holes and lower connecting holes, respectively. Lower connecting pipes are fixedly mounted on both sides of the second water storage tank. The lower connecting pipes on both sides are fixedly connected to the lower connecting holes. Water pumps are fixedly mounted on both sides of the first water storage tank. A controller is fixedly mounted on the frame, and the controller is electrically connected to the two water pumps.

[0007] By adopting the above technical solution, after the second adsorption tower is heated, the water pump is turned on by the controller to draw water from the first water storage tank. The water flows out from the upper connecting pipe and enters the conduction pipe in the second adsorption tower. After flowing through the conduction pipe, the water carries away the heat on the conduction pipe, reducing the temperature in the second adsorption tower. The heated water flows through the conduction pipe and then into the lower connecting pipe until it enters the second water storage tank for storage. When the first adsorption tower needs to be heated, the water pump is controlled to draw water from the storage tank into the conduction pipe in the first adsorption tower. The heat in the water is carried to the conduction pipe, accelerating the heating rate in the first adsorption tower, reducing the heat loss of the dryer, and improving the operating efficiency of the dryer.

[0008] Preferably, the conductive tube is spirally arranged around the inner wall of the first adsorption tower and the second adsorption tower.

[0009] By adopting the above technical solution, the flow path of the water is extended, the area of ​​the conduction pipe in the first and second adsorption towers is increased, and the conduction efficiency is improved.

[0010] Preferably, the conductive pipe is made of a high thermal conductivity material, and the upper connecting pipe and the lower connecting pipe are made of thermal insulation material.

[0011] By adopting the above technical solution, the conduction pipe can exchange heat more efficiently in the first and second adsorption towers. After the water flows out of the conduction pipe, the water can reduce heat loss when flowing through the upper and lower connecting pipes, thereby increasing the heat utilization rate.

[0012] Preferably, both the first and second water storage tanks are provided with a plurality of heat dissipation holes, and an expansion ball is slidably disposed in the heat dissipation hole. The expansion ball is provided with an opening, and the edge of the opening is fixedly connected to the bottom of the heat dissipation hole.

[0013] By adopting the above technical solution, on the one hand, the water flow that is about to be cooled can be further cooled, and on the other hand, when the heated water enters the first and second water storage tanks, the expansion ball expands due to heat and blocks the heat dissipation holes, which can reduce the loss of temperature in the tank.

[0014] In summary, this application has the following beneficial technical effects: After the second adsorption tower is heated, the water pump is turned on by the controller to draw water from the first water storage tank. The water flows out from the upper connecting pipe and enters the conduction pipe in the second adsorption tower. After flowing through the conduction pipe, the water carries away the heat on the conduction pipe, reducing the temperature in the second adsorption tower. The heated water flows through the conduction pipe and then into the lower connecting pipe until it enters the second water storage tank for storage. When the first adsorption tower needs to be heated, the water pump is controlled to draw water from the water storage tank into the conduction pipe in the first adsorption tower. The heat in the water is carried to the conduction pipe, accelerating the heating rate in the first adsorption tower, reducing the heat loss of the dryer, and improving the operating efficiency of the dryer. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0017] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this embodiment;

[0018] Figure 3 This is a schematic diagram of a partial cross-sectional structure of the heat dissipation hole in this embodiment.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Frame; 2. First adsorption tower; 3. Second adsorption tower; 4. Water storage tank one; 5. Water storage tank two; 6. Controller; 7. Water pump; 8. Conducting pipe; 9. Upper connecting pipe; 10. Lower connecting pipe; 11. Opening; 12. Upper connecting hole; 13. Lower connecting hole; 14. Heat dissipation hole; 15. Expansion ball. Detailed Implementation

[0021] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0023] A waste heat recovery structure for an adsorption dryer includes a frame 1, a heater, several connecting pipes, and a first adsorption tower 2 and a second adsorption tower 3 mounted on the frame 1. The pipes inside the dryer are equipped with distributors and switching valves for uniformly distributing airflow and switching airflow between the two towers. A first water storage tank 4 and a second water storage tank 5 are fixedly mounted on the frame 1. Upper connecting pipes 9 are mounted on both sides of the first water storage tank 4. The first adsorption tower 2 and the second adsorption tower 3 are respectively provided with upper connecting holes 12 and lower connecting holes 13. The upper connecting pipes 9 on both sides are fixedly connected to the upper connecting holes 12. Conducting pipes 8 are installed inside both the first adsorption tower 2 and the second adsorption tower 3. The two ends of the conducting pipes 8 are fixedly connected to the upper connecting holes 12 and the lower connecting holes 13, respectively. Lower connecting pipes 10 are fixedly mounted on both sides of the second water storage tank 5. The lower connecting pipes 10 on both sides are fixedly connected to the lower connecting holes 13, respectively. Water pumps 7 are fixedly mounted on both sides of the first water storage tank 4. A controller 6 is fixedly mounted on the frame 1, and the controller 6 is electrically connected to the two water pumps 7.

[0024] In operation, the first adsorption tower 2 dries and adsorbs air, while the heater heats the second adsorption tower 3. After the second adsorption tower 3 is heated, the controller 6 controls the water pump 7 to start, drawing water from the storage tank 4. The water flows out through the upper connecting pipe 9 and into the conduction pipe 8 in the second adsorption tower 3. The water carries away the heat from the conduction pipe 8, lowering its temperature and accelerating the temperature reduction in the second adsorption tower 3. The heated water then flows through the conduction pipe 8 into the lower connecting pipe 10, eventually entering the storage tank 5 for storage. When the first adsorption tower 2 needs to be heated, the controller 6 controls the water pump 7 to draw water from the storage tank into the conduction pipe 8 in the first adsorption tower 2. The heat in the water is carried to the conduction pipe 8, accelerating the heating rate in the first adsorption tower 2, reducing heat loss in the dryer, and improving the dryer's operating efficiency.

[0025] Both water storage tank 4 and water storage tank 5 are provided with several heat dissipation holes 14. An expansion ball 15 is slidably disposed in the heat dissipation hole 14. The expansion ball 15 is provided with an opening 11. The edge of the opening 11 is fixedly connected to the bottom of the heat dissipation hole 14. When the heated water flows into the tank, the hot air rises and enters the expansion ball 15 through the opening 11, causing the expansion ball 15 to expand due to heat. The expanded ball presses against the heat dissipation hole 14, so that the temperature in the tank will not continue to be lost, thus reducing heat loss. When the water that has been preheated in the adsorption tower flows into the tank, there may still be residual heat in the water. This heat can be evaporated through the heat dissipation hole 14, so that the temperature of the water can drop, preparing for the next heat adsorption.

[0026] The conduction pipe 8 is spirally arranged around the inner wall of the first adsorption tower 2 and the second adsorption tower 3, which extends the flow path of the water and increases the area of ​​the conduction pipe 8 in the first adsorption tower 2 and the second adsorption tower 3, so that the water flow and the conduction pipe 8 can carry out more sufficient heat exchange and improve the conduction efficiency. The conduction pipe 8 is made of a high thermal conductivity material, and the upper connecting pipe 9 and the lower connecting pipe 10 are made of thermal insulation material. When the water flows through the conduction pipe 8, the conduction pipe 8 can carry out heat exchange in the first adsorption tower 2 and the second adsorption tower 3 more efficiently. After the water flows out of the conduction pipe 8, the water will flow through the upper connecting pipe 9 and the lower connecting pipe 10. The thermal insulation material of the upper connecting pipe 9 and the lower connecting pipe 10 can reduce heat loss and increase heat utilization.

[0027] The implementation principle of this embodiment is as follows: During use, the first adsorption tower 2 dries and adsorbs air, and the heater heats the second adsorption tower 3. After the second adsorption tower 3 is heated, the controller 6 controls the water pump 7 to start, drawing water from the storage tank 4. The water flows out from the upper connecting pipe 9 and enters the conduction pipe 8 in the second adsorption tower 3. After the water flows through the conduction pipe 8, it carries away the heat on the conduction pipe 8, reducing the temperature of the conduction pipe 8, so that the temperature in the second adsorption tower 3 can be reduced more quickly. The heated water flows through the conduction pipe 8 and then into the lower connecting pipe 10 until it enters the storage tank 5 for storage. The heated water flows into the tank body 2, and the hot air rises and enters the expansion ball 15 through the opening 11, causing the expansion ball 15 to expand due to heat. The expanded ball presses against the heat dissipation hole 14, so that the temperature in the tank body will not continue to be lost.

[0028] After the second adsorption tower 3 cools down, it begins to dry the gas, while the first adsorption tower 2 needs to be heated to evaporate the water vapor in the adsorption tower. The controller 6 controls the water pump 7 to draw water from the water storage tank into the conduction pipe 8 in the first adsorption tower 2, so that the heat in the water flow is carried to the conduction pipe 8, which accelerates the heating rate in the first adsorption tower 2 and reduces the heat loss of the dryer. After passing through the conduction pipe 8, the water flow flows into the water storage tank 4 through the upper connecting pipe 9. There may still be residual heat in the water flow, which can be evaporated through the heat dissipation hole 14, so that the temperature of the water flow can drop, preparing for the next adsorption heat.

[0029] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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 this utility model.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] 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 waste heat recovery structure for an adsorption dryer, comprising a frame (1), and a first adsorption tower (2) and a second adsorption tower (3) disposed on the frame (1), characterized in that: Water storage tank 1 (4) and water storage tank 2 (5) are fixedly installed on the frame (1). Water storage tank 1 (4) has upper connecting pipes (9) on both sides. The first adsorption tower (2) and the second adsorption tower (3) are respectively provided with upper connecting holes (12) and lower connecting holes (13). The upper connecting pipes (9) on both sides are fixedly connected to the upper connecting holes (12). The first adsorption tower (2) and the second adsorption tower (3) are both provided with conduction pipes (8). The two ends of the conduction pipes (8) are fixedly connected to the upper connecting holes (12) and the lower connecting holes (13) respectively. Water storage tank 2 (5) has lower connecting pipes (10) fixedly installed on both sides. The lower connecting pipes (10) on both sides are fixedly connected to the lower connecting holes (13) respectively. Water pumps (7) are fixedly installed on both sides of water storage tank 1 (4). Controller (6) is fixedly installed on the frame (1). Controller (6) is electrically connected to the two water pumps (7) respectively.

2. The waste heat recovery structure of an adsorption dryer according to claim 1, characterized in that: The conduction tube (8) is spirally arranged around the inner wall of the first adsorption tower (2) and the second adsorption tower (3).

3. The waste heat recovery structure of an adsorption dryer according to claim 1, characterized in that: The conductive pipe (8) is made of a high thermal conductivity material, and the upper connecting pipe (9) and the lower connecting pipe (10) are made of thermal insulation material.

4. The waste heat recovery structure of an adsorption dryer according to claim 1, characterized in that: Both the first water tank (4) and the second water tank (5) are provided with a number of heat dissipation holes (14). An expansion ball (15) is slidably disposed in the heat dissipation hole (14). An opening (11) is provided on the expansion ball (15). The edge of the opening (11) is fixedly connected to the bottom of the heat dissipation hole (14).

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