Cooling water tank-based cooling water waste heat recovery and reuse process system

Abstract

The utility model discloses a cooling water waste heat recycling process system based on cooling water tank, it includes the crusher, cleaning and stirring water pool, hoist, vertical double heat source rotary dryer, extruder and cooling water tank that connects gradually, the cooling water in cooling water tank is connected with the central heat pipe of vertical double heat source rotary dryer through first recovery water pipeline, is provided with the water supply pipeline on cooling water tank, and the water outlet of central heat pipe is connected with cleaning and stirring water pool through second recovery pipeline, the utility model discloses simple structure, introduces the cooling water in cooling water tank to the central heat pipe of vertical double heat source rotary dryer, forms central heat source, improves the internal temperature of dryer, and forms the inside and outside double -deck heat source with electric heating ring cavity, effectively improves the drying efficiency of dryer, and simultaneously circulates the cooling water after cooling to cleaning and stirring water pool and reuses, realizes the step utilization of heat energy and water resource circulation.

Description

Technical Field

[0001] This utility model relates to the technical field of ton bag storage equipment, and in particular to a cooling water waste heat recovery and reuse process system based on a cooling water tank. Background Technology

[0002] In the production process of recycling and reusing waste drip irrigation tape, the waste drip irrigation tape needs to undergo processes such as crushing, washing, drying, extrusion, and cooling. In the existing technology, the water flow medium of each process operates independently. For example, the washing water of the washing machine and the cooling water in the drip irrigation tape cooling water tank are all independent pipe networks. The temperature of the cooling water in the drip irrigation tape cooling water tank can reach 60° after heat exchange with the hot drip irrigation tape product, without effective recycling and reuse. The drying process also requires additional electric heating for drying. Furthermore, if the washing water temperature in the washing process is increased, it will also help improve the washing efficiency. Therefore, this utility model provides a process system for recovering and reusing the waste heat of cooling water based on a cooling water tank. Utility Model Content

[0003] The purpose of this invention is to provide a process system for recovering and reusing waste heat from cooling water based on a cooling water tank, in order to solve the technical problem that the cooling water in the existing cooling water tank does not effectively reuse waste heat and there is a waste of resources.

[0004] The utility model discloses a cooling water waste heat recovery and reuse process system based on a cooling water tank, comprising a crusher, a cleaning and stirring water tank, an elevator, a vertical dual-heat source rotary dryer, an extruder, and a cooling water tank connected in sequence. The cooling water in the cooling water tank is connected to the central heat pipe of the vertical dual-heat source rotary dryer through a first recovery pipeline. A water supply pipeline is provided on the cooling water tank. The outlet of the central heat pipe is connected to the cleaning and stirring water tank through a second recovery pipeline. Water pumps are installed on both the first recovery pipeline and the second recovery pipeline.

[0005] Furthermore, a filter is installed on the first recovery pipeline.

[0006] Furthermore, the vertical dual-heat-source rotary dryer includes a central heat pipe, a filter cylinder, a vertical cylinder, and an electric heating ring cavity connected coaxially from the inside to the outside. The electric heating ring cavity is rotatably connected to the frame and is drive-connected to the drive mechanism.

[0007] Furthermore, a spiral water guide plate is provided on the inner wall of the central heat pipe.

[0008] Furthermore, the outlet end of the first recovery pipe is tangent to the inner wall of the central heat pipe, and the outlet direction of the first recovery pipe is consistent with the rotation direction of the central heat pipe.

[0009] Furthermore, an electric heating wire is provided inside the electric heating ring cavity.

[0010] The beneficial effects of this utility model are as follows: This utility model has a simple structure. The cooling water in the cooling water tank is introduced into the central heat pipe of the vertical dual heat source rotary dryer to form a central heat source, which increases the internal temperature of the dryer. It forms an inner and outer double-layer heat source with the electric heating ring cavity, which effectively improves the drying efficiency of the dryer. At the same time, the cooled water is circulated to the cleaning and stirring water tank for reuse, realizing the cascade utilization of heat energy and water resource recycling. It has the advantages of improving heat energy utilization rate, reducing energy consumption and production costs. Attached Figure Description

[0011] Figure 1 This is a process system diagram of the present invention;

[0012] Figure 2 This is a cross-sectional view of a vertical dual-heat-source rotary dryer.

[0013] In the diagram, the components are: 1. Crusher; 2. Cleaning and mixing water tank; 3. Elevator; 5. Extruder; 6. Cooling water tank; 7. Filter; 8. First recovery pipeline; 9. Central heat pipe; 10. Vertical cylinder; 11. Electric heating ring cavity; 12. Frame; 13. Drive assembly; 14. Filter screen cylinder; 15. Second recovery pipeline; 16. Water pump; 17. Water supply pipeline; and 18. Water guide plate. Detailed Implementation

[0014] like Figure 1 As shown, the cooling water waste heat recovery and reuse process system based on a cooling water tank includes a crusher 1, a cleaning and stirring water tank 2, an elevator 3, a vertical dual-heat source rotary dryer, an extruder 5, and a cooling water tank 6 connected in sequence. The cooling water in the cooling water tank 6 is connected to the central heat pipe 9 of the vertical dual-heat source rotary dryer through a first recovery pipeline 8. A water supply pipeline 17 is provided on the cooling water tank 6. The outlet of the central heat pipe 9 is connected to the cleaning and stirring water tank 2 through a second recovery pipeline 15. Water pumps 16 are installed on both the first recovery pipeline 8 and the second recovery pipeline 15. A filter 7 is installed on the first recovery pipeline 8. The filter 7 can be implemented using a stainless steel filter screen or a stacked filter structure, with a pore size of, for example, 0.5 mm to 2 mm. It is used to intercept particulate matter or fiber debris and can block impurities mixed into the cooling water tank due to contact with the hot drip irrigation tape, preventing them from entering the central heat pipe. Compared with the existing technology, the direct discharge of waste heat from the cooling water in the existing process leads to energy waste. However, this solution uses two-stage waste heat recovery to prioritize the use of high-temperature cooling water for heating in the drying process, and then uses the cooled cooling water to raise the temperature of the cleaning water, realizing the tiered utilization of energy. The traditional drying process relies on a single electric heating, while this solution uses the waste heat of the cooling water as an auxiliary heat source to reduce power consumption.

[0015] like Figure 2 As shown, the vertical dual-heat-source rotary dryer includes a central heat pipe 9, a filter cylinder 14, a vertical cylinder 10, and an electrically heated annular cavity 11, which are coaxially connected from the inside to the outside. Specifically, the central heat pipe 9 and the filter cylinder 14, and the vertical cylinder 10 and the filter cylinder 14, are connected by radially perforated rods. The electrically heated annular cavity 11 is rotatably connected to the frame 12 and is also connected to the drive mechanism. A spiral water guide plate 18 is provided on the inner wall of the central heat pipe 9. Specifically, the spiral water guide plate 18 can be a continuous spiral protrusion structure extending axially along the pipe wall. It can be achieved by welding metal strips or molding. The pitch range can be 0.8-1.5 times the pipe diameter. This structure guides the water flow by forming a spiral channel. The rotating motion increases the contact area between the fluid and the pipe wall. Specifically, the rotation speed of the water flow can be controlled by adjusting the tilt angle of the guide plate, which can range from 30° to 60°. This design enhances the turbulent mixing effect by extending the water flow residence time, thereby increasing heat exchange efficiency. The outlet end of the first recovery pipe 8 is tangent to the inner wall of the central heat pipe 9, and the outlet direction of the first recovery pipe 8 is consistent with the rotation direction of the central heat pipe 9. Specifically, when the cooling water enters the rotating central heat pipe 9 tangentially, the water flow is pulled by the pipe wall movement to form a spiral flow trajectory. Since the outlet direction is the same as the rotation direction of the central heat pipe 9, the water flow adheres tightly to the pipe wall under the action of centrifugal force to form a stable annular liquid film, thus extending the water flow heat transfer path.

[0016] like Figure 2 As shown, an electric heating wire is provided in the electric heating ring cavity 11. The electric heating ring cavity 11 refers to the annular sealed cavity wrapped around the outer layer of the vertical dryer. It is made of metal material, such as high-temperature resistant stainless steel, and is used to support the electric heating element and form a uniform heat radiation surface. This structure maintains a stable sealed state during the rotation of the dryer, and at the same time conducts heat to the internal material.

[0017] 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 cooling water waste heat recovery and reuse process system based on a cooling water tank, characterized in that: It includes a crusher (1), a cleaning and stirring water tank (2), an elevator (3), a vertical dual-heat source rotary dryer, an extruder (5), and a cooling water tank (6) connected in sequence. The cooling water in the cooling water tank (6) is connected to the central heat pipe (9) of the vertical dual-heat source rotary dryer through a first recovery pipe (8). A water supply pipe (17) is provided on the cooling water tank (6). The outlet of the central heat pipe (9) is connected to the cleaning and stirring water tank (2) through a second recovery pipe (15). A water pump (16) is installed on both the first recovery pipe (8) and the second recovery pipe (15).

2. The cooling water waste heat recovery and reuse process system based on a cooling water tank according to claim 1, characterized in that: A filter (7) is installed on the first recycling pipeline (8).

3. The cooling water waste heat recovery and reuse process system based on a cooling water tank according to claim 1, characterized in that: The vertical dual-heat-source rotary dryer includes a central heat pipe (9), a filter cylinder (14), a vertical cylinder (10), and an electric heating ring cavity (11) connected coaxially from the inside to the outside. The electric heating ring cavity (11) is rotatably connected to the frame (12) and is connected to the drive mechanism.

4. The cooling water waste heat recovery and reuse process system based on a cooling water tank according to claim 3, characterized in that: A spiral water guide plate (18) is provided on the inner wall of the central heat pipe (9).

5. The cooling water waste heat recovery and reuse process system based on a cooling water tank according to claim 3, characterized in that: The outlet end of the first recovery pipe (8) is tangent to the inner wall of the central heat pipe (9), and the outlet direction of the first recovery pipe (8) is consistent with the rotation direction of the central heat pipe (9).

6. The cooling water waste heat recovery and reuse process system based on a cooling water tank according to claim 3, characterized in that: A heating wire is provided inside the electric heating ring cavity (11).

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