Cold and heat exchange mechanism for low-temperature distillation treatment of wastewater

Abstract

The utility model relates to the technical field of cold and heat exchangers, in particular to a cold and heat exchange mechanism for waste water low-temperature distillation treatment. The waste water low-temperature distillation treatment cold and heat exchange mechanism comprises a condensation tank, a spiral heat exchange pipe is arranged in the condensation tank, a gear ring is arranged on the outer ring of the spiral heat exchange pipe, a gear is meshed with the top of the gear ring, a motor is arranged on the right side of the gear, and two sets of limiting rings are evenly arranged on the outer ring of the spiral heat exchange pipe. The spiral heat exchange pipe is driven by the motor to rotate to generate centrifugal force, water drops attached to the surface of the spiral heat exchange pipe can be thrown down, so that the thermal resistance of a liquid film on the surface of the spiral heat exchange pipe is reduced, the heat exchange effect of the spiral heat exchange pipe is improved, the contact speed of the spiral heat exchange pipe and hot steam can be increased in the rotating process, and the heat exchange efficiency is improved. And meanwhile, the phenomenon of local overheating or supercooling can be reduced, the condensation process is more uniform, and stress damage caused by temperature gradient is avoided.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically a heat exchanger mechanism for low-temperature distillation treatment of wastewater. Background Technology

[0002] After wastewater undergoes low-temperature distillation, the resulting hot steam needs to be condensed in a heat exchanger. However, in traditional heat exchangers, the heat exchange tubes are mostly fixed within the machine body. Therefore, when the hot steam comes into contact with the heat exchange tubes, water droplets form on the tube surface, creating a liquid film. This affects the subsequent contact between the hot steam and the heat exchange tubes, thus reducing the heat exchange efficiency of the heat exchanger. To address this issue, a technological innovation is proposed based on the existing low-temperature distillation wastewater treatment heat exchange mechanism. Utility Model Content

[0003] The purpose of this invention is to provide a heat exchange mechanism for low-temperature distillation treatment of wastewater to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a wastewater low-temperature distillation treatment heat exchange mechanism, comprising:

[0005] A condenser is provided inside, with a spiral heat exchange tube inside. The outer ring of the spiral heat exchange tube is provided with a toothed ring, and a gear is engaged at the top of the toothed ring. A motor is provided on the right side of the gear. Two sets of limiting rings are evenly arranged on the outer ring of the spiral heat exchange tube. A set of connecting pipes is inserted into both the liquid inlet and the liquid outlet of the spiral heat exchange tube.

[0006] Preferably, a set of first through holes is provided on both the left and right sides of the condenser, and an annular limiting groove is provided in the first through hole. The limiting ring is disposed in the annular limiting groove, and the two sets of connecting pipes are respectively disposed on the left and right sides of the condenser.

[0007] Preferably, the outer ring of the connecting pipe is provided with a fourth perfluoroether rubber sealing ring, and the outer side wall of the fourth perfluoroether rubber sealing ring is in contact with the inner side wall of the spiral heat exchanger tube.

[0008] Preferably, a first perfluoroether rubber sealing ring and a second perfluoroether rubber sealing ring are provided in the first through hole, and the limiting ring is located between the first perfluoroether rubber sealing ring and the second perfluoroether rubber sealing ring. The first perfluoroether rubber sealing ring and the second perfluoroether rubber sealing ring are sleeved on the outer ring of the spiral heat exchange tube.

[0009] Preferably, the motor is located on the right side of the condenser tank, and a second through hole is provided on the right side of the condenser tank. A third perfluoroether rubber sealing ring is provided in the second through hole, and the output end of the motor is connected to the gear through the third perfluoroether rubber sealing ring.

[0010] Preferably, the top of the condenser is connected to a steam inlet valve, and the bottom of the condenser is connected to a drain valve.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention uses a motor to drive the spiral heat exchange tube to rotate. The centrifugal force generated by the rotation of the spiral heat exchange tube can shake off the water droplets adhering to the surface of the spiral heat exchange tube, thereby reducing the thermal resistance of the liquid film on the surface of the spiral heat exchange tube and improving the heat exchange effect of the spiral heat exchange tube. In addition, the spiral heat exchange tube can also increase its contact speed with hot steam during rotation, and at the same time reduce local overheating or overcooling, making the condensation process more uniform and avoiding stress damage caused by temperature gradient.

[0013] The sealing rings in this invention are all perfluoroether rubber sealing rings. Benefiting from the good temperature resistance of perfluoroether rubber, the coefficient of thermal expansion and contraction of the sealing ring is low, which can effectively prevent steam and liquid leakage during operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the heat exchange mechanism for low-temperature distillation treatment of wastewater according to the present invention.

[0015] Figure 2 This is a front sectional view of a heat exchange mechanism for low-temperature distillation treatment of wastewater according to the present invention.

[0016] Figure 3 This utility model Figure 2 Enlarged view of part A.

[0017] In the diagram: 1. Condenser; 11. Steam inlet valve; 12. Drain valve; 13. Motor; 14. Connecting pipe; 15. Spiral heat exchanger tube; 16. Gear; 17. Gear ring; 18. Limiting ring; 19. First perfluoroether rubber seal; 2. Second perfluoroether rubber seal; 21. Third perfluoroether rubber seal; 22. Fourth perfluoroether rubber seal. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-3A wastewater low-temperature distillation treatment heat exchange mechanism includes a condenser tank 1. A spiral heat exchange tube 15 is rotatably mounted inside the condenser tank 1. A toothed ring 17 is fixedly mounted on the outer ring of the spiral heat exchange tube 15. A gear 16 meshes with the top of the toothed ring 17. A motor 13 is fixedly mounted on the right side of the gear 16, driving the gear 16 to rotate. The gear 16, through the toothed ring 17, drives the spiral heat exchange tube 15 to rotate. Two sets of limiting rings 18 are evenly fixed on the outer ring of the spiral heat exchange tube 15, supporting the spiral heat exchange tube. The spiral heat exchange tube 15 rotates stably. A set of connecting pipes 14 are inserted into both the liquid inlet and the liquid outlet of the spiral heat exchange tube 15. The top of the condenser 1 is connected to the steam inlet valve 11, and the bottom of the condenser 1 is connected to the drain valve 12. The steam inlet valve 11 is connected to the steam outlet of the wastewater low-temperature distillation tank. The hot steam generated by the wastewater low-temperature distillation tank enters the condenser 1 through the steam inlet valve 11 and comes into contact with the spiral heat exchange tube 15 for heat exchange. After opening the drain valve 12, the condensate stored in the condenser 1 can be discharged.

[0020] A set of first through holes is provided on both the left and right sides of the condenser 1. An annular limiting groove is provided within each first through hole, and a limiting ring 18 is rotatably positioned within the annular limiting groove. Two sets of connecting pipes 14 are fixedly installed on the left and right sides of the condenser 1, respectively, connecting the connecting pipes 14 to the compressor. The refrigerant generated by the compressor enters the spiral heat exchange tube 15 through the connecting pipes 14. A fourth perfluoroether rubber sealing ring 22 is fixedly installed on the outer ring of the connecting pipe 14. The outer wall of the fourth perfluoroether rubber sealing ring 22 is in contact with the inner wall of the spiral heat exchange tube 15, sealing the connection gap between the spiral heat exchange tube 15 and the connecting pipe 14. Therefore, when the spiral heat exchange tube 15 rotates on the outer ring of the connecting pipe 14, the fourth perfluoroether rubber sealing ring 22 prevents leakage at the connection gap between the spiral heat exchange tube 15 and the connecting pipe 14. A first perfluoroether rubber sealing ring 19 and a second perfluoroether rubber sealing ring 19 are fixedly installed within the first through hole. The perfluoroether rubber sealing ring 2 and the limiting ring 18 are located between the first perfluoroether rubber sealing ring 19 and the second perfluoroether rubber sealing ring 2. The first perfluoroether rubber sealing ring 19 and the second perfluoroether rubber sealing ring 2 are fitted onto the outer ring of the spiral heat exchange tube 15. The first perfluoroether rubber sealing ring 19 and the second perfluoroether rubber sealing ring 2 seal the connection gap between the spiral heat exchange tube 15, the limiting ring 18 and the condenser 1, thereby preventing liquid and vapor leakage from the connection gap between the three. The motor 13 is fixedly installed on the right side of the condenser 1. A second through hole is opened on the right side of the condenser 1. A third perfluoroether rubber sealing ring 21 is fixedly installed in the second through hole. The output end of the motor 13 passes through the third perfluoroether rubber sealing ring 21 and is connected to the gear 16. The third perfluoroether rubber sealing ring 21 seals the connection between the output end of the motor 13 and the condenser 1, thereby preventing liquid and vapor leakage from the connection gap between the two.

[0021] Working principle: Connecting pipe 14 to the compressor, the cold liquid generated by the compressor enters the spiral heat exchange tube 15 through connecting pipe 14. Connecting steam inlet valve 11 to the steam outlet of the wastewater low-temperature distillation tank, the hot steam generated by the wastewater low-temperature distillation tank enters the condenser 1 through steam inlet valve 11 and comes into contact with the spiral heat exchange tube 15 for heat exchange. The motor 13 drives the gear 16 to rotate, and the gear 16 drives the spiral heat exchange tube 15 to rotate through the gear ring 17. Two sets of limiting rings 18 are evenly fixed on the outer ring of the spiral heat exchange tube 15. The limiting rings 18 support the spiral heat exchange tube 15 to rotate stably. The centrifugal force generated by the rotation of the spiral heat exchange tube 15 can shake off the water droplets attached to the surface of the spiral heat exchange tube 15, thereby reducing the thermal resistance of the liquid film on the surface of the spiral heat exchange tube 15 and improving the heat exchange effect of the spiral heat exchange tube 15. In addition, the spiral heat exchange tube 15 can also increase its contact speed with the hot steam during rotation, and at the same time reduce local overheating or overcooling, making the condensation process more uniform and avoiding stress damage caused by temperature gradient.

[0022] The fourth perfluoroether rubber sealing ring 22 seals the connection gap between the spiral heat exchange tube 15 and the connecting pipe 14. This prevents liquid leakage at the connection gap when the spiral heat exchange tube 15 rotates on the outer ring of the connecting pipe 14. The first perfluoroether rubber sealing ring 19 and the second perfluoroether rubber sealing ring 2 seal the connection gap between the spiral heat exchange tube 15, the limiting ring 18 and the condenser 1. This prevents liquid and vapor leakage at the connection gap between the three. The third perfluoroether rubber sealing ring 21 seals the connection between the output end of the motor 13 and the condenser 1. This prevents liquid and vapor leakage at the connection gap between the two.

Claims

1. A heat exchange mechanism for low-temperature distillation treatment of wastewater, characterized in that, include: A condenser (1) is provided inside the condenser (1), and a spiral heat exchange tube (15) is provided on the outer ring of the spiral heat exchange tube (15). A gear (16) is meshed on the top of the gear (17), and a motor (13) is provided on the right side of the gear (16). Two sets of limiting rings (18) are evenly provided on the outer ring of the spiral heat exchange tube (15). A set of connecting pipes (14) are inserted into the liquid inlet and liquid outlet of the spiral heat exchange tube (15).

2. The wastewater low-temperature distillation treatment heat exchange mechanism according to claim 1, characterized in that: The condenser (1) has a set of first through holes on both the left and right sides. An annular limiting groove is provided in the first through hole. The limiting ring (18) is set in the annular limiting groove. The two sets of connecting pipes (14) are respectively set on the left and right sides of the condenser (1).

3. The wastewater low-temperature distillation treatment heat exchange mechanism according to claim 1, characterized in that: The outer ring of the connecting pipe (14) is provided with a fourth perfluoroether rubber sealing ring (22), and the outer side wall of the fourth perfluoroether rubber sealing ring (22) is in contact with the inner side wall of the spiral heat exchange pipe (15).

4. The wastewater low-temperature distillation treatment heat exchange mechanism according to claim 2, characterized in that: The first through hole is provided with a first perfluoroether rubber sealing ring (19) and a second perfluoroether rubber sealing ring (2). The limiting ring (18) is located between the first perfluoroether rubber sealing ring (19) and the second perfluoroether rubber sealing ring (2). The first perfluoroether rubber sealing ring (19) and the second perfluoroether rubber sealing ring (2) are sleeved on the outer ring of the spiral heat exchange tube (15).

5. The wastewater low-temperature distillation treatment heat exchange mechanism according to claim 1, characterized in that: The motor (13) is located on the right side of the condenser (1). A second through hole is provided on the right side of the condenser (1). A third perfluoroether rubber sealing ring (21) is provided in the second through hole. The output end of the motor (13) is connected to the gear (16) through the third perfluoroether rubber sealing ring (21).

6. The wastewater low-temperature distillation treatment heat exchange mechanism according to claim 1, characterized in that: The top of the condenser (1) is connected to a steam inlet valve (11), and the bottom of the condenser (1) is connected to a drain valve (12).

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