A water recycling system

Abstract

The present application discloses a water recycling and reuse system, relating to the field of wastewater treatment technology, including a cooling water tank, a cooling return water tank, and a condensation return water tank. The cooling return water tank is provided with a first main compartment and a first compartment, the volume of the first main compartment being larger than that of the first compartment. The condensation return water tank is provided with a second main compartment and a second compartment, the volume of the second main compartment being larger than that of the second compartment. A heat pump unit is provided between the first compartment and the second compartment, the heat pump unit having a cold end water supply pipeline and a hot end water supply pipeline, the water inlet of the cold end water supply pipeline being connected to the first compartment, and the water inlet of the hot end water supply pipeline being connected to the second compartment. A first siphon is provided between the first main compartment and the first compartment, the port of the first siphon connected to the first main compartment being higher than the other end. A second siphon is provided between the second main compartment and the second compartment, the port of the second siphon connected to the second main compartment being higher than the other end. The present application can simplify the preparation of recovered hot water.

Description

Technical Field

[0001] The present application relates to the field of wastewater treatment technology, and in particular to a water recycling and reuse system. Background Art

[0002] Printing and dyeing, also known as dyeing and finishing, is a processing method encompassing pre-treatment, dyeing, printing, finishing, and washing. Dyeing and printing plants consume significant amounts of heat and electricity throughout their production processes, with heat being the largest contributor. Since dyeing and finishing processes require heating large amounts of industrial water to temperatures between 90°C and 130°C, heat energy used in washing, bleaching, and dyeing accounts for approximately 80% of the total heat energy used in the entire process, with a further 20% used in drying and heat-setting. Wastewater discharged from the dyeing and printing processes reaches temperatures exceeding 80°C. Currently, most dyeing and printing plants in my country fail to recycle the heat from this wastewater, resulting in significant waste. Recovering this heat energy could bring significant economic benefits.

[0003] In the printing and dyeing process, the temperature of condensed water recovered from the heat exchangers of setting machines and dryers is generally between 80-90°C. The temperature of the cooling water recovered from dyeing machines is generally between 55-80°C, with the amount of cooling water recovered from dyeing machines being relatively high. This recycled water can be used in washing processes in washing machines, reduction cleaning of polyester, and oxygen bleaching of cotton. Washing machines have multiple washing steps at different temperatures. The washing process ranges from 60-85°C, the reduction cleaning process of polyester is between 85-90°C, and the oxygen bleaching process of cotton is above 95°C.

[0004] Therefore, recycled water from the printing and dyeing process can be used directly in some processes, but it needs to be reheated for use in other processes. In order to allocate recycled water, additional containers and pipelines are required, which is relatively cumbersome. Therefore, how to best allocate and use recycled water has become a major challenge. Summary of the Invention

[0005] In order to make the preparation and use of hot water recovered from printing and dyeing simpler, the present application provides a water recovery and reuse system.

[0006] The water recycling and reuse system provided in this application adopts the following technical solution:

[0007] A water recycling and reuse system includes a cooling water pool, a cooling return water pool and a condensation return water pool, wherein the water temperature of the cooling water pool is lower than the water temperature of the cooling return water pool, and the water temperature of the cooling return water pool is lower than the water temperature of the condensation return water pool; the cooling return water pool is provided with a first main compartment and a first compartment, the volume of the first main compartment is larger than the volume of the first compartment, the condensation return water pool is provided with a second main compartment and a second compartment, the volume of the second main compartment is larger than the volume of the second compartment; the first main compartment and the second main compartment are used to supply water to dyeing and finishing equipment, the first main compartment A heat pump group is provided between the secondary compartment and the second secondary compartment, and the heat pump group has a cold end water supply pipeline and a hot end water supply pipeline. The water inlet end of the cold end water supply pipeline is connected to the first primary compartment, and the water inlet end of the hot end water supply pipeline is connected to the second secondary compartment; a first siphon is provided between the first main compartment and the first primary compartment, and the port of the first siphon connected to the first main compartment is higher than the other port; a second siphon is provided between the second main compartment and the second secondary compartment, and the port of the second siphon connected to the second main compartment is higher than the other port.

[0008] By adopting this technical solution, the water in the cooling tank is used to regulate the water temperature of equipment such as dyeing machines. After passing through the dyeing machines, the water temperature of the cooling tank increases and is discharged into the cooling return tank. The water in the cooling return tank and the condensation return tank remains at a higher temperature and can be used for washing in the washing machine. The cooling return tank is divided into a first main compartment and a primary compartment, while the condensation return tank is divided into a second main compartment and a secondary compartment. The water in these two compartments is used to supply water to dyeing and finishing equipment such as washing machines. The heat pump unit transfers heat from the primary compartment to the secondary compartment, raising the water temperature in the secondary compartment and thus achieving a higher water temperature. The water in the secondary compartment can be recycled, and the water in the primary compartment is cooled and discharged, thus reducing energy waste. The heat pump unit's cold-end water supply pipeline consumes the hot water in the primary compartment, while the hot-end water supply pipeline consumes the hot water in the secondary compartment. As the hot water in the primary and secondary compartments gradually depletes, the first siphon pipe siphons in hot water from the first main compartment, and the second siphon pipe siphons in hot water from the second main compartment. By separating the cooling and condensing return water tanks to create additional water storage space and utilizing the first and second siphon pipes for automatic water replenishment, the allocation and use of recycled hot water for printing and dyeing is simplified.

[0009] Optionally, the water outlet end of the cold end water supply pipeline is connected to the cooling water pool.

[0010] By adopting the above technical solution, the temperature of the water in the first compartment drops after passing through the cold end of the heat pump unit and can be discharged into the cooling water pool for utilization, thereby reducing water resource waste.

[0011] Optionally, the drainage water level of the first main compartment is higher than the drainage water level of the first primary compartment, and the drainage water level of the second main compartment is higher than the drainage water level of the second secondary compartment.

[0012] By adopting the above technical solution, the drainage level of the first main compartment is higher than that of the first compartment, so that the first compartment can preferentially supply water to the second compartment through the first siphon. Similarly, the second main compartment can preferentially supply water to the second compartment through the second siphon.

[0013] Optionally, the outlet pipe section of the cold end water supply pipeline is provided with a bypass pipe, the bypass pipe extends into the first isolation tank, and the bypass pipe is provided with a first switch valve.

[0014] By adopting the above technical solution, when the bypass pipe is opened, the water discharged from the cold end water supply pipeline of the heat pump group can be discharged into the first compartment through the bypass pipe, so that the cold end water supply pipeline of the heat pump group circulates and drains the water in the first compartment, thereby increasing the reduction in the water temperature in the first compartment. When the water temperature in the first compartment drops to a lower temperature, the first switch valve on the bypass pipe is closed to discharge the water in the first compartment into the cooling water pool, which is beneficial to lowering the water temperature in the cooling water pool, thereby improving the cooling and temperature regulation effect of the water in the cooling water pool.

[0015] Optionally, the first switch valve is a three-way valve, the inner cavity of the three-way valve is connected to the water inlet end of the cold end water supply pipeline, and the three-way valve is alternately connected to the bypass pipe and the water outlet end of the cold end water supply pipeline.

[0016] By adopting the above technical solution, the connection state between the water inlet and the water outlet of the cold end water supply pipeline or the bypass pipe can be directly controlled by the three-way valve, which is conducive to simplifying the structure.

[0017] Optionally, a vertical partition is provided in the first partition, and the vertical partition can slide in the horizontal direction, and there is friction damping between the vertical partition and the inner wall of the first partition, and the sliding direction of the vertical partition is perpendicular to the vertical partition; the vertical partition is provided with a connecting port, and a sealing plate is hingedly provided on the side of the vertical partition away from the bypass pipe, and the sealing plate closes the connecting port in a suspended state; a reciprocating drive mechanism is installed on the top surface of the first partition, and the reciprocating drive mechanism is located on the side of the vertical partition away from the bypass pipe, and a traction rope is connected between the reciprocating drive mechanism and the sealing plate; the bypass pipe and the water inlet end of the cold end water supply pipeline are located on one side of the vertical partition, and the first siphon pipe is located on the other side of the vertical partition.

[0018] By adopting the above technical solution, since the water inlet end of the cold-end water supply pipeline of the heat pump group and the bypass pipe are located on the same side of the vertical partition, when the bypass pipe is opened, the cold-end water supply pipeline of the heat pump group can circulate and drain the water in the first compartment located on one side of the vertical partition. When the bypass pipe is closed, the cold-end drain pipe of the heat pump group discharges the water in the first compartment into the cooling water tank. During this process, the amount of water on the side of the vertical partition close to the bypass pipe gradually decreases. At the same time, the first siphon pipe draws the water in the first main compartment to the side of the first compartment away from the bypass pipe for replenishment. During this process, the vertical partition can adaptively move toward the water inlet of the cold-end water supply pipeline to reduce the mixing of water of different temperatures on both sides of the vertical partition. When the second partition tank is filled with water, the reciprocating drive mechanism is used to slowly drive the vertical partition to move in the opposite direction through the traction rope. During this process, the traction rope forces the seal to rotate upward and away from the connecting port, so that the water on the side of the vertical partition close to the first siphon can flow to the other side. When the vertical partition moves to reset and the water levels on both sides of the vertical partition are consistent, the reciprocating drive mechanism is reset, and then the reciprocating drive mechanism loosens the traction rope and the sealing plate, so that the sealing plate closes the connecting port again.

[0019] Optionally, the vertical partition is a hollow shell structure, the interior of the vertical partition is vacuumed, an exhaust pipe is provided on the top of the vertical partition, the exhaust pipe is provided with a third switch valve, and the exhaust pipe is provided with a pneumatic joint.

[0020] By adopting the above technical solution, the vertical baffles are configured as hollow structures. When the vertical baffles are evacuated, heat transfer from the water on both sides of the vertical baffles is reduced, which helps the heat pump unit to minimize the water temperature on one side of the vertical baffles. Furthermore, the hollow structure of the vertical baffles helps reduce their weight, making it easier for the reciprocating drive mechanism to drive the vertical baffles horizontally.

[0021] Optionally, grooves are provided at the bottom and both sides of the vertical partition, the grooves at the bottom and both sides of the vertical partition are connected to each other, and flexible water-absorbing filling material is provided in each groove of the vertical partition, and the bottom and both sides of the vertical partition are in contact with the inner wall of the first partition through the flexible water-absorbing filling material.

[0022] By adopting the above technical solution, the flexible water-absorbing filling material can block the gap between the vertical partition and the inner wall of the first partition, and the flexible water-absorbing filling material has dense gaps that can hinder the flow of water. When the bottom and both sides of the vertical partition are in contact with the inner wall of the first partition through the flexible water-absorbing filling material, the convection of water on both sides of the vertical partition can be effectively hindered, thereby ensuring the heat insulation effect of the vertical partition. The flexible water-absorbing filling material can make the vertical partition form a flexible contact with the inner wall of the first partition to better adapt to the unevenness of the inner wall of the first partition, which is conducive to reducing the jamming of the vertical partition when moving. The flexible water-absorbing filling material is arranged in the groove of the vertical partition, which can keep the position of the flexible water-absorbing filling material stable.

[0023] Optionally, the first siphon tube and the second siphon tube are siphon tubes with the same structure, and the siphon tubes are provided with a water injection riser, the water injection riser is arranged upward, and the water injection riser is provided with a second switch valve.

[0024] By adopting the above technical solution, when the siphon tube is empty and cannot work normally, water can be injected into the siphon tube through the water injection riser to fill the water injection riser. When the siphon tube is full of water, the second switch valve is closed to keep the siphon tube in normal working condition.

[0025] Optionally, a movable sealing member is provided at one end of the siphon tube, and the movable sealing member is used to close the port of the siphon tube; the movable sealing member of the first siphon tube is located in the first main compartment, and the movable sealing member of the second siphon tube is located in the second main compartment.

[0026] By adopting the above technical solution, when filling the siphon tube with water through the water injection riser, one end of the siphon tube is first closed using the movable sealing member, so that during the process of the water injection riser injecting water into the siphon tube, the siphon tube only drains water through one port, thereby making it easier for the water injection riser to fill the siphon tube and meet the siphoning conditions.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] The heat pump unit's cold-end water supply pipeline consumes the hot water in the primary compartment, while the hot-end water supply pipeline consumes the hot water in the secondary compartment. As the hot water in the primary and secondary compartments gradually depletes, the first siphon pipe siphons in hot water from the first main compartment, and the second siphon pipe siphons in hot water from the second main compartment. By separating the cooling and condensing return water tanks to create additional water storage space and utilizing the first and second siphon pipes for automatic water replenishment, the allocation and use of recycled hot water for printing and dyeing is simplified.

[0029] The water in the first compartment has its temperature dropped after passing through the cold end of the heat pump unit and can be discharged into the cooling water pool for utilization, thus reducing water waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of Example 1.

[0031] Figure 2 It is a schematic structural diagram of the cooling water pool, the cooling return water pool and the condensation return water pool of Example 1.

[0032] Figure 3 Schematic diagram of the structure of the siphon tube of Example 1.

[0033] Figure 4 It is a schematic structural diagram of the cooling water pool, the cooling return water pool and the condensation return water pool of Example 2.

[0034] Figure 5 It is a top view of the cooling and return water tank of Example 2.

[0035] Figure 6 This is a cross-sectional view of the vertical partition of Example 2.

[0036] Description of reference numerals:

[0037] 1. Cooling water tank; 2. Cooling return water tank; 21. First main compartment; 22. First compartment; 3. Condensation return water tank; 31. Second main compartment; 32. Second compartment; 4. Heat pump unit; 41. Cold end water supply pipeline; 411. Bypass pipe; 412. First on-off valve; 42. Hot end water supply pipeline; 43. Compressor; 44. Expansion valve; 45. Evaporator; 46. Condenser; 5. Siphon; 501. First siphon; 502. Second siphon; 51. Water injection riser; 52. Movable sealing member; 521, horizontal plate; 522, plug rod; 523, sling; 53, second switch valve; 6, vertical partition; 61, roller; 62, exhaust pipe; 621, third switch valve; 622, pneumatic joint; 63, groove; 64, flexible water-absorbing filling material; 65, connecting port; 66, sealing plate; 7, reciprocating drive mechanism; 71, traction rope; 8, drainage pipeline; 10, dyeing machine; 20, drying heat exchanger; 30, setting machine; 40, flash tank; 50, washing machine. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-6 This application is described in further detail. Example 1

[0039] The present application embodiment discloses a water recycling system. Figure 1 and Figure 2The system comprises a cooling water tank 1, a cooling return water tank 2, and a condensing return water tank 3. The water temperature in cooling water tank 1 is lower than that in cooling return water tank 2, which in turn is lower than that in condensing return water tank 3. The water in cooling water tank 1 is used to regulate the water temperature of equipment such as the dyeing machine 10. The pipe connecting cooling water tank 1 to dyeing machine 10 controls the water inlet via a solenoid valve. The water in cooling water tank 1 is used to cool the cooling water supplied to dyeing machine 10 and other equipment. After passing through dyeing machine 10 and other equipment, the water temperature of cooling water tank 1 increases before being discharged into cooling return water tank 2. The water in cooling return water tank 2 and condensing return water tank 3 is at a higher temperature and can be used for washing in washing machine 50. The condensing return water tank 3 is used to recover steam condensate from the setting machine 30 and the drying heat exchanger 20. The medium-pressure steam exhaust from the setting machine 30 is fed into a flash tank 40 to produce low-pressure steam. The condensate generated in the flash tank 40 is automatically discharged into the condensing return water tank 3 according to the set water level.

[0040] Reference Figure 1 and Figure 2 The cooling return water tank 2 is provided with a first main compartment 21 and a first compartment 22. The volume of the first main compartment 21 is larger than that of the first compartment 22. The condensation return water tank 3 is provided with a second main compartment 31 and a second compartment 32. The volume of the second main compartment 31 is larger than that of the second compartment 32. The cooling water tank 1, the first main compartment 21 and the second main compartment 31 are all provided with a drainage pipe 8 for external water supply. The drainage pipe 8 is provided with a solenoid valve to control the water supply. The drainage pipe 8 of the first main compartment 21 supplies water to the washing machine, and the washing machine 50 automatically replenishes water according to the change of the water level. The drainage pipe 8 of the second main compartment 31 supplies water to the polyester reduction cleaning process and the cotton-containing oxygen bleaching process of the dyeing and finishing equipment.

[0041] Reference Figure 2 A heat pump unit 4 is provided between the first compartment 22 and the second compartment 32. The heat pump unit 4 is used to transfer heat from the first compartment 22 to the second compartment 32. The heat pump unit 4 includes a compressor 43, an expansion valve 44, an evaporator 45, a condenser 46, a cold-end water supply pipeline 41, and a hot-end water supply pipeline 42. The compressor 43, expansion valve 44, evaporator 45, and condenser 46 are connected in series via pipelines to form a refrigerant circuit. The cold-end water supply pipeline 41 is connected to the evaporator 45, and the hot-end water supply pipeline 42 is connected to the condenser 46. The water inlet of the cold-end water supply pipeline 41 is connected to the first compartment 22, and the water outlet of the cold-end water supply pipeline 41 is connected to the cooling water tank 1. The water inlet of the hot-end water supply pipeline 42 is connected to the second compartment 32, and the water outlet of the hot-end water supply pipeline 42 is used to supply hot water to dyeing and finishing equipment such as the dyeing machine 10.

[0042] Reference Figure 2 and Figure 3The cooling return water tank 2 and the condensation return water tank 3 are both provided with a siphon pipe 5. The siphon pipe 5 of the cooling return water tank 2 is a first siphon pipe 501, and the siphon pipe 5 of the condensation return water tank 3 is a second siphon pipe 502. The first siphon pipe 501 connects the first main compartment 21 with the first secondary compartment 22, and the port of the first siphon pipe 501 connected to the first main compartment 21 is higher than the other port; the second siphon pipe 502 connects the second main compartment 31 with the second secondary compartment 32, and the port of the second siphon pipe 502 connected to the second main compartment 31 is higher than the other port.

[0043] The drainage water level of the first main compartment 21 is higher than the drainage water level of the first primary compartment 22, the end of the first siphon 501 located in the first main compartment 21 is higher than the drainage water level of the first primary compartment 22, the drainage water level of the second main compartment 31 is higher than the drainage water level of the second secondary compartment 32, and the end of the second siphon 502 located in the second main compartment 31 is higher than the drainage water level of the second secondary compartment 32.

[0044] The water recycling system of this embodiment operates as follows: the cooling return water tank 2 is divided into a first main compartment 21 and a first primary compartment 22, and the condensation return water tank 3 is divided into a second main compartment 31 and a second secondary compartment 32. The water in the first and second main compartments 21 and 31 is used to supply water to the washing machine. The heat pump unit 4 transfers heat from the first compartment 22 to the second secondary compartment 32, raising the water temperature in the second compartment 32 to a higher temperature. The water in the second compartment 32 can be recycled, and the water in the first compartment 22 is cooled and discharged, thus reducing energy waste. The cold-end water supply pipe 41 of the heat pump unit 4 consumes the hot water in the primary compartment 22, while the hot-end water supply pipe 42 of the heat pump unit 4 consumes the hot water in the secondary compartment 32. As the hot water in the primary compartment 22 and the secondary compartment 32 is gradually consumed, the first siphon pipe 501 siphons hot water from the first main compartment 21, and the second siphon pipe 502 siphons hot water from the second main compartment 31. By separating the cooling return water tank 2 and the condensation return water tank 3 to create additional water storage space and using the siphon pipe 5 for automatic water replenishment, the preparation and use of recycled hot water for printing and dyeing can be simplified.

[0045] Reference Figure 2 The outlet pipe section of the cold-end water supply pipeline 41 is provided with a bypass pipe 411, which extends into the first compartment 22; the bypass pipe 411 is provided with a first switch valve 412, which is a three-way valve. The inner cavity of the three-way valve is connected to the water inlet end of the cold-end water supply pipeline 41, and the three-way valve is alternately switched to connect with the bypass pipe 411 and the water outlet end of the cold-end water supply pipeline 41.

[0046] When the bypass pipe 411 is opened, the water discharged from the cold-end water supply pipeline 41 of the heat pump group 4 can be discharged into the first compartment 22 through the bypass pipe 411, so that the cold-end water supply pipeline 41 of the heat pump group 4 circulates and drains the water in the first compartment 22, thereby increasing the reduction in the water temperature in the first compartment. When the water temperature in the first compartment drops to a lower temperature, the first switch valve 412 on the bypass pipe 411 is closed to discharge the water in the first compartment into the cooling water pool 1, which is beneficial to lowering the water temperature in the cooling water pool 1, thereby improving the cooling and temperature regulation effect of the water in the cooling water pool 1.

[0047] Reference Figure 3 The siphon tube 5 is provided with an upwardly directed water injection riser 51 and a second on-off valve 53, such as a ball valve or a stop valve. A movable sealing member 52 is provided at one end of the siphon tube 5 for sealing the end of the siphon tube 5. The movable sealing member 52 comprises a horizontal plate 521, which is provided with a plurality of insertion rods 522. Each insertion rod 522 is inserted upwardly into the inner side of the siphon tube 5 and abuts the inner wall of the siphon tube 5. A sling 523 is connected to the horizontal plate 521, and the end of the sling 523, which is away from the horizontal plate 521, is tied to the siphon tube 5 or the water injection riser 51. The movable sealing member 52 of the first siphon tube 501 is located within the first main compartment 21, while the movable sealing member 52 of the second siphon tube 502 is located within the second main compartment 31.

[0048] The water injection riser 51 can be used to inject water into the siphon tube 5, causing the siphon tube 5 to fill with water and create siphoning conditions. To do this, the movable sealing member 52 is lifted upward using the sling 523, causing the horizontal plate 521 of the movable sealing member 52 to seal the port at one end of the siphon tube 5. The second on-off valve 53 is then opened, and water is injected into the siphon tube 5 through the water injection riser 51. When the siphon tube 5 is filled with water and reaches siphoning conditions, the second on-off valve 53 is closed. The sling 523 is then lowered, causing the movable sealing member 52 to move downward and away from the port of the siphon tube 5. Example 2

[0049] Reference Figure 4 and Figure 5 The difference between this embodiment and embodiment 1 is that a vertical partition 6 is provided in the first partition 22, and a group of rollers 61 are provided on both sides of the top of the vertical partition 6. The rollers 61 can slide along the top surface of the first partition 22, so that the vertical partition 6 can slide in the horizontal direction. There is friction damping between the vertical partition 6 and the inner wall of the first partition 22, and the sliding direction of the vertical partition 6 is perpendicular to the vertical partition 6.

[0050] Reference Figure 6The vertical partition 6 has a hollow shell structure. The bottom of the vertical partition 6 is thickened to lower the center of gravity of the vertical partition. An exhaust pipe 62 is provided at the top of the vertical partition 6. The exhaust pipe 62 is equipped with a third on-off valve 621, which can be a ball valve or a stop valve. A pneumatic connector 622 is provided at the end of the exhaust pipe 62 away from the vertical partition 6. The interior of the vertical partition 6 is evacuated using a vacuum pump to prevent heat transfer between the water at different temperatures on both sides of the vertical partition 6. In addition, to facilitate observation of the vacuum state inside the vertical partition 6, a vacuum pressure gauge can be installed at the top of the vertical partition 6 for monitoring.

[0051] Reference Figure 6 The bottom and both sides of the vertical partition 6 are provided with grooves 63. The grooves 63 on the bottom and both sides of the vertical partition 6 are interconnected. Each groove 63 of the vertical partition 6 is provided with a flexible water-absorbing filling material 64. The flexible water-absorbing filling material 64 is a water-absorbing sponge or a layered cloth or non-woven fabric. The bottom and both sides of the vertical partition 6 abut against the inner wall of the primary compartment 22 through the flexible water-absorbing filling material 64. The flexible water-absorbing filling material can hinder the convection of water on both sides of the vertical partition 6 and is unlikely to cause a jam in the sliding of the vertical partition 6.

[0052] Reference Figure 6 The vertical partition 6 is provided with a connecting port 65, and a sealing plate 66 is hingedly provided on the side of the vertical partition 6 away from the bypass pipe 411. The sealing plate 66 closes the connecting port 65 in a suspended state; a reciprocating drive mechanism 7 is installed on the top surface of the first partition 22, and the reciprocating drive mechanism 7 is a hydraulic cylinder, an electric cylinder or a linear module, etc. The reciprocating drive mechanism 7 is located on the side of the vertical partition 6 away from the bypass pipe 411, and a traction rope 71 is connected between the reciprocating drive mechanism 7 and the sealing plate 66; the bypass pipe 411 and the water inlet end of the cold end water supply pipeline 41 are located on one side of the vertical partition 6, and the first siphon pipe 501 is located on the other side of the vertical partition 6.

[0053] Since the water inlet end of the cold-end water supply pipeline 41 of the heat pump group 4 and the bypass pipe 411 are located on the same side of the vertical partition 6, when the bypass pipe 411 is opened, the cold-end water supply pipeline 41 of the heat pump group 4 can circulate and drain the water in the first compartment 22 located on one side of the vertical partition 6. When the bypass pipe 411 is closed, the cold-end drain pipeline of the heat pump group 4 discharges the water in the first compartment 22 into the cooling water tank 1. During this process, the amount of water on the side of the vertical partition 6 close to the bypass pipe 411 gradually decreases. At the same time, the first siphon 501 draws the water in the first main compartment 21 into the side of the first compartment 22 away from the bypass pipe 411 for replenishment. In this process, the vertical partition 6 can adaptively move toward the water inlet of the cold-end water supply pipeline 41 to reduce the mixing of water of different temperatures on both sides of the vertical partition 6.

[0054] After the second water replenishment of the partition tank 32 is completed, the reciprocating drive mechanism 7 is used to slowly drive the vertical partition 6 to move in the opposite direction through the traction rope 71. During this process, the traction rope 71 forces the seal to rotate upward and away from the connecting port 65, so that the water on the side of the vertical partition 6 close to the first siphon tube 501 can flow to the other side. When the vertical partition 6 moves to its reset position and the water levels on both sides of the vertical partition 6 are consistent, the reciprocating drive mechanism 7 is reset, and then the reciprocating drive mechanism 7 loosens the traction rope 71 and the sealing plate 66, so that the sealing plate 66 closes the connecting port 65 again.

[0055] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A water recycling system, characterized by: The invention comprises a cooling water pool (1), a cooling return water pool (2) and a condensation return water pool (3), wherein the water temperature of the cooling water pool (1) is lower than the water temperature of the cooling return water pool (2), and the water temperature of the cooling return water pool (2) is lower than the water temperature of the condensation return water pool (3); the cooling return water pool (2) is provided with a first main compartment (21) and a first compartment (22), the volume of the first main compartment (21) is larger than the volume of the first compartment (22), the condensation return water pool (3) is provided with a second main compartment (31) and a second compartment (32), the volume of the second main compartment (31) is larger than the volume of the second compartment (32); the first main compartment (21) and the second main compartment (31) are used to supply water to the dyeing and finishing equipment, the first compartment (22) and the second compartment (22) are connected to each other. A heat pump group (4) is provided between the compartments (32), and the heat pump group (4) has a cold end water supply pipeline (41) and a hot end water supply pipeline (42), the water inlet end of the cold end water supply pipeline (41) is connected to the first compartment (22), and the water inlet end of the hot end water supply pipeline (42) is connected to the second compartment (32); a first siphon (501) is provided between the first main compartment (21) and the first compartment (22), and the port of the first siphon (501) connected to the first main compartment (21) is higher than the other port; a second siphon (502) is provided between the second main compartment (31) and the second compartment (32), and the port of the second siphon (502) connected to the second main compartment (31) is higher than the other port; The outlet pipe section of the cold end water supply pipeline (41) is provided with a bypass pipe (411), the bypass pipe (411) extends into the first separator (22), and the bypass pipe (411) is provided with a first switch valve (412); a vertical partition (6) is provided in the first separator (22), the vertical partition (6) can slide in the horizontal direction, there is friction damping between the vertical partition (6) and the inner wall of the first separator (22), and the sliding direction of the vertical partition (6) is perpendicular to the vertical partition (6); the vertical partition (6) is provided with a connecting port (65), and the vertical partition (6) is away from the bypass pipe (4 11) is hingedly provided with a sealing plate (66) on one side, and the sealing plate (66) closes the connecting port (65) in a suspended state; a reciprocating drive mechanism (7) is installed on the top surface of the first partition (22), and the reciprocating drive mechanism (7) is located on the side of the vertical partition (6) away from the bypass pipe (411), and a traction rope (71) is connected between the reciprocating drive mechanism (7) and the sealing plate (66); the water inlet end of the bypass pipe (411) and the cold end water supply pipeline (41) are located on one side of the vertical partition (6), and the first siphon pipe (501) is located on the other side of the vertical partition (6).

2. A water recycling system according to claim 1, characterized in that: The water outlet end of the cold end water supply pipeline (41) is connected to the cooling water pool (1).

3. The water recycling system according to claim 1, characterized in that: The drainage water level of the first main compartment (21) is higher than the drainage water level of the first primary compartment (22), and the drainage water level of the second main compartment (31) is higher than the drainage water level of the second secondary compartment (32).

4. The water recycling system according to claim 1, characterized in that: The first switch valve (412) is a three-way valve, the inner cavity of the three-way valve is connected to the water inlet end of the cold end water supply pipeline (41), and the three-way valve is alternately connected to the bypass pipe (411) and the water outlet end of the cold end water supply pipeline (41).

5. The water recycling system according to claim 1, characterized in that: The vertical partition (6) is a hollow shell structure, the interior of the vertical partition (6) is vacuumed, an exhaust pipe (62) is provided at the top of the vertical partition (6), the exhaust pipe (62) is provided with a third switch valve (621), and the exhaust pipe (62) is provided with a pneumatic joint (622).

6. The water recycling system according to claim 1, characterized in that: The bottom and both sides of the vertical partition (6) are provided with grooves (63), the grooves (63) at the bottom and both sides of the vertical partition (6) are interconnected, and each groove (63) of the vertical partition (6) is provided with a flexible water-absorbing filling material (64), and the bottom and both sides of the vertical partition (6) abut against the inner wall of the first partition (22) through the flexible water-absorbing filling material (64).

7. The water recycling system according to claim 1, characterized in that: The first siphon pipe (501) and the second siphon pipe (502) are siphon pipes (5) of the same structure. The siphon pipe (5) is provided with a water injection riser (51). The water injection riser (51) is arranged upward and is provided with a second switch valve (53).

8. The water recycling system according to claim 7, characterized in that: A movable sealing member (52) is provided at one end of the siphon tube (5), and the movable sealing member (52) is used to close the end of the siphon tube (5); the movable sealing member (52) of the first siphon tube (501) is located in the first main compartment (21), and the movable sealing member (52) of the second siphon tube (502) is located in the second main compartment (31).

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