Cooling water circulation system for recycling wastewater

Abstract

This utility model relates to the technical field of wastewater recycling systems, and discloses a cooling water recycling system for realizing wastewater recovery and utilization. The system includes a cooling tower, a transport pipe fixedly connected to the outer wall of the cooling tower, and a filter frame fixedly connected to the other end of the transport pipe. A limiting component is installed inside the transport pipe, and a connecting component is installed inside the filter frame. The limiting component includes a sealing plug and an inlet / outlet opened inside the transport pipe. The outer wall of the sealing plug is slidably connected to the inlet / outlet, and a connecting block is fixedly connected inside the transport pipe. In this utility model, the sewage drives the connecting column and the limiting disc, and in conjunction with a spring, the sealing plug slides inside the fixed outer shell, preventing backflow and avoiding equipment damage and water waste. It optimizes the water flow direction, reduces water hammer effect, and solves the problems of backflow and equipment damage caused by water impact when the system is shut down, thus improving the system's safety, stability, and energy efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of wastewater circulation systems, and in particular to a cooling water circulation system for realizing the recycling of wastewater. Background Technology

[0002] In industrial production and construction, wastewater recycling systems for cooling water circulation have become a key technology for conserving water resources and reducing operating costs. With increasingly stringent environmental regulations and a worsening water shortage, these systems filter and purify wastewater, enabling it to be reused as cooling water. This not only reduces the consumption of fresh water but also alleviates the environmental pressure caused by wastewater discharge. From cooling cycles in large factories to air conditioning systems in commercial buildings, the application of this technology is expanding, and its efficiency, stability, and safety have become key concerns in the industry.

[0003] Existing wastewater recycling cooling water circulation systems typically consist of cooling towers, water pumps, filtration devices, and reverse osmosis units. During operation, the cooling tower lowers the temperature of the cooling water, the water pumps drive the water circulation within the system, and the filtration and reverse osmosis units purify the wastewater. When the system starts, the water pumps draw treated cooling water from the pool and delivers it to the equipment requiring cooling. After heat exchange, the heated cooling water returns to the cooling tower for further cooling, completing one cycle. The wastewater, however, enters the filtration and reverse osmosis units through dedicated pipes to remove impurities and salts, and is then replenished to the system after meeting reuse standards.

[0004] However, existing technologies have a significant problem. When the system shuts down or the water pump fails, backflow can easily occur at the cooling tower outlet due to the lack of effective water flow control measures. This not only leads to an abnormal rise in the water level in the cooling tower's sump, wasting water resources, but also causes reverse impacts on equipment such as water pumps and filters, resulting in equipment damage and affecting the normal operation of the system. Simultaneously, the water hammer effect caused by backflow increases pipe vibration and noise, shortens equipment lifespan, and reduces the safety, stability, and energy efficiency of the entire cooling water circulation system. Therefore, a cooling water circulation system that recycles and reuses wastewater is proposed to solve these problems. Utility Model Content

[0005] The purpose of this invention is to provide a cooling water circulation system for recycling wastewater, aiming to solve the problems of water backflow and equipment damage caused by impact when the system is shut down in the prior art.

[0006] The technical solution of this utility model is implemented as follows: a cooling water circulation system for recycling wastewater includes a cooling tower, a transport pipe is fixedly connected to the outer wall of the cooling tower, a filter frame is fixedly connected to the other end of the transport pipe, a limiting component is provided inside the transport pipe, and a connecting component is provided inside the filter frame.

[0007] The limiting component includes a sealing plug and an inlet port opened inside the transport pipe. The outer wall of the sealing plug is slidably connected to the inside of the inlet port. A connecting block is fixedly connected inside the transport pipe. A fixed housing is fixedly connected inside the connecting block. A connecting post is slidably connected inside the fixed housing. One end of the connecting post is fixedly connected to the outer wall of the sealing plug, and the other end of the connecting post is fixedly connected to a limiting disc. A spring is provided inside the fixed housing. One end of the spring is fixedly connected to the outer wall of the limiting disc, and the other end of the spring is fixedly connected to the inner wall of the fixed housing.

[0008] Optionally, the connecting component includes a retaining ball, the outer wall of which is disposed inside the filter frame.

[0009] Optionally, a fixing ring is fixedly connected inside the filter frame, and a fixing ring is fixedly connected to the top of the fixing ring.

[0010] Optionally, the fixing ring has an air inlet hole inside and a sliding groove inside, and the outer wall of the retaining ball is slidably connected inside the sliding groove.

[0011] Optionally, a connecting pipe is fixedly connected to the outer wall of the fixing ring, and a retaining ring is fixedly connected to the outer wall of the connecting pipe.

[0012] Optionally, a push ring is slidably connected to the outer wall of the fixed ring, and a limit ring is fixedly connected inside the push ring.

[0013] Optionally, the inner wall of the limiting ring is slidably connected to the outer wall of the connecting pipe, and the limiting ring is in contact with the retaining ring.

[0014] Optionally, a second spring is sleeved on the outer wall of the connecting pipe, with the top of the second spring fixedly connected to the bottom of the retaining ring and the bottom of the second spring fixedly connected to the top of the fixing ring.

[0015] 1. In this utility model, the sealing plug achieves its movement function through the discharge of sewage. When sewage is discharged, the sewage drives the connecting column and the limiting disc, and in conjunction with the spring, the sealing plug slides inside the fixed shell. This prevents backflow of water, avoids equipment damage and water waste, optimizes the water flow direction, reduces the water hammer effect, solves the problem of backflow of water and damage to equipment when the system is shut down, and improves the safety, stability and energy efficiency of the system.

[0016] 2. In this utility model, the ball moves by pushing the push ring. When the push ring is pushed, the push ring drives the limit ring and the second spring, and in conjunction with the retaining ring, the ball slides inside the slot. This allows for quick connection to the compressed air pipe, shortens backwash preparation time, improves backwash efficiency, eliminates tool-free operation, reduces maintenance difficulty and leakage risk, reduces the frequency of chemical cleaning, extends membrane life, and solves the problems of long time consumption, difficult maintenance, and poor backwash effect of traditional connection methods. This improves the system's operating efficiency, stability, and economy.

[0017] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the cooling water circulation system for realizing wastewater recycling proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of the transport pipe of the cooling water circulation system for realizing the recycling of wastewater proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of the internal structure of the fixed outer shell of the cooling water circulation system for realizing wastewater recycling proposed in this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the fixed ring of the cooling water circulation system for realizing the recycling of wastewater proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the push ring of the cooling water circulation system for recycling wastewater proposed in this utility model.

[0023] The names and numbers of the components in the diagram are as follows:

[0024] 1. Cooling tower; 2. Transport pipe; 3. Filter frame; 4. Fixed outer shell; 5. Connecting block; 6. Sealing plug; 7. Inlet / outlet; 8. Connecting column; 9. Spring 1; 10. Limiting disc; 11. Fixing ring; 12. Push ring; 13. Limiting ring; 14. Retaining ring; 15. Slide groove; 16. Ball retainer; 17. Spring 2; 18. Fixing ring; 19. Connecting pipe; 20. Air inlet. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] Reference Figures 1-3 This utility model provides an embodiment of a cooling water circulation system for recycling wastewater, including a cooling tower 1, which is a key device for heat exchange in the system. It adopts a counter-flow structure, achieving efficient heat dissipation and cooling by having air and hot water flow in opposite directions, which can reduce the wastewater temperature by 8-12℃. A transport pipe 2 is fixedly connected to the outer wall of the cooling tower 1. The pipe is made of corrosion-resistant UPVC material with a diameter of DN150 and is used to transport the heated wastewater in the cooling tower 1 to the filter frame 3 for purification treatment. At the same time, the filtered clean water is returned to the cooling tower 1 to ensure the continuity of water circulation in the system. The other end of the transport pipe 2 is fixedly connected to the filter frame 3, which is composed of a stainless steel frame and multiple layers of filter screens of different precision. It can effectively intercept suspended solids, colloids and other impurities in the wastewater, achieve preliminary purification of the wastewater, and provide quality assurance for subsequent recycling. A limiting component is set inside the transport pipe 2, and a connecting component is set inside the filter frame 3.

[0027] The limiting component includes a sealing plug 6 and an inlet 7 opened inside the transport pipe 2. The outer wall of the sealing plug 6 is slidably connected to the inside of the inlet 7. The sealing plug 6 has a conical structure and is made of nitrile rubber, which has good sealing performance and corrosion resistance. Its outer wall is tightly slidably connected to the inside of the inlet 7 to prevent water backflow and avoid damage to the system equipment. A connecting block 5 is fixedly connected inside the transport pipe 2. It is made of high-strength engineering plastic injection molding and is used to fix and support the fixed shell 4. The fixed shell 4 is fixedly connected inside the connecting block 5. A connecting column 8 is slidably connected inside the fixed shell 4. One end of the connecting column 8 is fixedly connected to the outer wall of the sealing plug 6, and the other end of the connecting column 8 is fixedly connected to the limiting disc 10. A spring 9 is provided inside the fixed shell 4. One end of the spring 9 is fixedly connected to the outer wall of the limiting disc 10, and the other end of the spring 9 is fixedly connected to the inner wall of the fixed shell 4.

[0028] Specifically, in the process of wastewater treatment and resource recycling in industrial production and construction, the system for cooling and recovering wastewater is crucial. As the core component of the system, the cooling tower 1 undertakes the key functions of heat exchange and temperature regulation. During operation, the wastewater with increased temperature in the cooling tower 1 is orderly transported to the filter frame 3 through the transport pipe 2. The filter frame 3 is equipped with multiple layers of filter screens and filter media of different precision, which can effectively intercept suspended solids, colloids and other impurities in the wastewater, ensuring water purification. After filtration, the wastewater is transported back to the cooling tower 1 through the transport pipe 2 on the other side. During this process, the cooling tower 1 uses the principles of air convection and water evaporation to dissipate the heat in the wastewater, thereby achieving the purpose of recycling the wastewater. To ensure the stability and safety of the system operation, when the wastewater is discharged normally, the impact force of the water flow acts on the discharge inlet 7, causing the discharge inlet 7 to move, which in turn drives the connected sealing plug 6 to slide out from the discharge inlet 7. The movement of the sealing plug 6 pulls the connecting column 8, which in turn drives the limiting disc 10 to slide inside the fixed housing 4. During this process, the limiting disc 10 compresses the spring 9, opening a channel for the flow of sewage. When the sewage stops flowing or a backflow trend occurs, the spring 9 rebounds quickly with its own elastic potential energy, driving the sealing plug 6 to quickly return to the discharge port 7, forming a tight seal, effectively preventing sewage backflow and avoiding damage to the system equipment due to backflow, thus greatly improving the reliability and safety of the entire cooling and recovery system.

[0029] Reference Figure 1 , Figure 4 and Figure 5 The connecting assembly includes a retaining ball 16, which is a hemispherical structure made of high-strength stainless steel with a polished surface, exhibiting wear-resistant and corrosion-resistant properties. Its outer wall is located inside the filter frame 3, playing a crucial role in limiting and fixing during connection. A fixing ring 11 is fixedly connected inside the filter frame 3, and a fixing ring 18 is fixedly connected to the top of the fixing ring 11. An air inlet 20 is provided inside the fixing ring 18, and a sliding groove 15 is also provided inside the fixing ring 18. The sliding groove 15 is an annular groove structure, and the outer wall of the retaining ball 16 is tightly slidably connected inside the sliding groove 15, with the two working together securely. The ball 16 slides circumferentially. The outer wall of the ball 16 is slidably connected to the inside of the groove 15. The outer wall of the fixing ring 18 is fixedly connected to the connecting pipe 19. The outer wall of the connecting pipe 19 is fixedly connected to the retaining ring 14. The outer wall of the fixing ring 18 is slidably connected to the push ring 12, which is made of engineering plastic material and is easy for operators to push manually. The push ring 12 is fixedly connected to the inside of the limit ring 13. The inner wall of the limit ring 13 is slidably connected to the outer wall of the connecting pipe 19. The limit ring 13 is in contact with the retaining ring 14. The outer wall of the connecting pipe 19 is fitted with a second spring 17. The top of the second spring 17 is fixedly connected to the bottom of the retaining ring 14, and the bottom of the second spring 17 is fixedly connected to the top of the fixing ring 18.

[0030] Specifically, during the long-term operation of the cooling water circulation system for wastewater recycling, impurities inevitably accumulate inside the filter frame 3, requiring regular cleaning to maintain high-efficiency filtration performance. When cleaning the filter frame 3 is required, the operator simply pushes the push ring 12, which then drives the limiting ring 13 to slide smoothly along the outer wall of the connecting pipe 19. During the sliding process, the limiting ring 13 applies pressure to the spring 17, compressing it and simultaneously releasing the limiting restraint on the retaining ball 16. At this time, the retaining ball 16 can slide freely within the slide groove 15, allowing the operator to easily remove the air pipe. Insert the air into the air inlet 20. After the insertion is completed, release the push ring 12. The spring 17 will quickly rebound due to its elasticity, causing the limiting ring 13 to return to its initial position. Under the limiting action of the retaining ring 14, the limiting ring 13 will slide precisely to the slide groove 15, which will again limit the ball 16, thus firmly fixing the air pipe. After that, compressed air can be smoothly delivered to the inside of the filter frame 3 through the connected air pipe to powerfully blow and clean the filter screen and media inside the filter frame 3, quickly removing the attached impurities. Compared with traditional cleaning methods, this greatly improves cleaning efficiency and convenience.

[0031] Working principle: When cooling and recycling wastewater, the cooling tower 1 transmits the wastewater to the filter frame 3 through the transport pipe 2 for filtration, and then transports it back to the cooling tower 1 through the other transport pipe 2 for further cooling and recycling. At the same time, when the water is discharged, it moves through the discharge inlet 7, which drives the sealing plug 6 to move and slide out from inside the discharge inlet 7. Then, the sealing plug 6 drives the connecting column 8 to move, and then the connecting column 8 drives the limiting disc 10 to slide inside the fixed shell 4, compressing the spring 9 to allow flow. When the flow stops or backflow occurs, the spring 9 rebounds and drives the sealing plug 6 back to the discharge inlet 7 to seal it, preventing backflow and avoiding damage.

[0032] Additionally, when cleaning the inside of the filter frame 3, push the push ring 12, which causes the limiting ring 13 to slide on the outer wall of the connecting pipe 19, compressing the second spring 17 and releasing the limiting of the retaining ball 16, allowing it to slide inside the slide groove 15. This allows the air pipe to slide into the air inlet 20. Then, release the push ring 12, and the second spring 17 will rebound, causing the limiting ring 13 to return to its original position. At the same time, the retaining ring 14 will limit the limiting ring 13 to slide into the slide groove 15, limiting the retaining ball 16 and fixing the air pipe, thus making the connection. Then, compressed air is delivered to the inside of the filter frame 3 through the air pipe, quickly cleaning the inside of the filter frame 3.

[0033] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cooling water circulation system for recycling wastewater, comprising a cooling tower (1), characterized in that: The cooling tower (1) is fixedly connected to the outer wall of a transport pipe (2), and the other end of the transport pipe (2) is fixedly connected to a filter frame (3). The transport pipe (2) is equipped with a limiting component, and the filter frame (3) is equipped with a connecting component. The limiting component includes a sealing plug (6) and an outlet (7) opened inside the transport pipe (2). The outer wall of the sealing plug (6) is slidably connected to the outlet (7). A connecting block (5) is fixedly connected inside the transport pipe (2). A fixed outer shell (4) is fixedly connected inside the connecting block (5). A connecting column (8) is slidably connected inside the fixed outer shell (4). One end of the connecting column (8) is fixedly connected to the outer wall of the sealing plug (6). The other end of the connecting column (8) is fixedly connected to a limiting disc (10). A spring (9) is provided inside the fixed outer shell (4). One end of the spring (9) is fixedly connected to the outer wall of the limiting disc (10). The other end of the spring (9) is fixedly connected to the inner wall of the fixed outer shell (4).

2. The cooling water circulation system for recycling wastewater according to claim 1, characterized in that: The connecting assembly includes a ball (16), the outer wall of which is disposed inside the filter frame (3).

3. The cooling water circulation system for recycling wastewater according to claim 2, characterized in that: The filter frame (3) is fixedly connected to a fixing ring (11) inside, and a fixing ring (18) is fixedly connected to the top of the fixing ring (11).

4. The cooling water circulation system for recycling wastewater according to claim 3, characterized in that: An air inlet (20) is provided inside the fixed ring (18), and a sliding groove (15) is provided inside the fixed ring (18). The outer wall of the retaining ball (16) is slidably connected inside the sliding groove (15).

5. The cooling water circulation system for recycling wastewater according to claim 4, characterized in that: A connecting pipe (19) is fixedly connected to the outer wall of the fixed ring (18), and a retaining ring (14) is fixedly connected to the outer wall of the connecting pipe (19).

6. The cooling water circulation system for recycling wastewater according to claim 5, characterized in that: The outer wall of the fixed ring (18) is slidably connected to a push ring (12), and a limit ring (13) is fixedly connected inside the push ring (12).

7. The cooling water circulation system for recycling wastewater according to claim 6, characterized in that: The inner wall of the limiting ring (13) is slidably connected to the outer wall of the connecting pipe (19), and the limiting ring (13) is in contact with the retaining ring (14).

8. The cooling water circulation system for recycling wastewater according to claim 7, characterized in that: The outer wall of the connecting pipe (19) is fitted with a second spring (17), the top of the second spring (17) is fixedly connected to the bottom of the retaining ring (14), and the bottom of the second spring (17) is fixedly connected to the top of the fixing ring (18).

Images