A return water filtration device for cooling towers

Abstract

This utility model relates to the technical field of industrial return water filtration equipment, specifically a return water filtration device for cooling towers. It includes a frame with an open top, the height of which is greater than the height of a buffer water tank. The frame has regularly arranged filter holes on its four sides and bottom. Guide plates are hinged to the top of the left and right sides of the frame, with baffles symmetrically arranged at their outermost ends. Width-limiting plates are provided on the left and right sides of the frame, and length-limiting plates are provided on the front and rear sides. The sum of the width of the frame and the lengths of the width-limiting plates on the left and right sides is slightly less than the width of the buffer water tank, and the sum of the length of the frame and the lengths of the length-limiting plates on the front and rear sides is slightly less than the length of the buffer water tank. This utility model can prevent sediment from clogging the filter holes at the bottom of the buffer water tank, avoiding the problem of insufficient circulating water volume affecting the production system. Furthermore, this utility model is easy to disassemble and install, effectively reducing the labor intensity of workers.

Description

Technical Field

[0001] This utility model relates to the technical field of industrial return water filtration equipment, specifically a return water filtration device for cooling towers. Background Technology

[0002] The basic process of a circulating water system in a chemical plant that uses circulating cooling water for cooling is as follows: a circulating water pump is used to transport the cooling water in the collection tank to the heat exchange users for heat exchange. After heat exchange, the high-temperature circulating water is returned to the cooling tower for cooling, filtered through the buffer water tank, collected in the collection tank, and then flows into the collection tank for recycling.

[0003] Currently, in the circulating water system of a PSA plant, the cooling tower has a square structure. The upper part is equipped with a water distributor and radiator, and the bottom has several buffer water tanks with filter holes at the bottom. After heat exchange, the circulating water is distributed to the radiator for cooling by the water distributor, and then flows along the inner wall of both sides of the cooling tower to the bottom of the cooling tower. It then flows from the inclined surface at the bottom of the cooling tower to the buffer water tank for filtration, and finally flows into the collection pool through the collection tank.

[0004] However, due to the need to control the return water pressure, the valves of the water distributors inside the cooling tower are generally closed relatively narrowly. This results in a small amount of water flowing into the water distributors, leading to a buildup of moss inside due to insufficient circulating water. Therefore, staff must regularly clean the moss from the water distributors with brushes. A small amount of moss after brushing flows directly into the radiators below, eventually covering them completely and requiring regular online cleaning of the radiator fins. The cleaned moss then flows into the buffer tank along with the circulating water. Simultaneously, after passing through numerous heat exchange devices, minerals in the circulating water or rust from the heat exchange equipment can precipitate as scale and other deposits. These deposits, including moss and dirt, flow into the buffer tank with the circulating water, clogging the filter holes and slowing down the filtration process. This reduces the amount of circulating water flowing into the collection tank, causing fluctuations in the production system's process parameters. If the circulating water is not replenished in time, it may cause a shutdown. Furthermore, the buffer tank is fixed to the bottom of the cooling tower and cannot be disassembled. When clogged, staff must clean it manually, bit by bit, resulting in low efficiency and a slow cleaning speed. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a return water filtration device for cooling towers. This device employs a design that combines a frame and a guide plate. The frame is placed inside a buffer tank, and the guide plate and baffles allow circulating water to first flow through the frame for filtration, removing algae, dirt, and other sediments. The water then flows back into the buffer tank and finally into an external collection pool. This design facilitates disassembly and installation, preventing sediment from clogging the filter holes at the bottom of the buffer tank and reducing the amount of filtered water flowing into the buffer tank, thus impacting the production system. Furthermore, when excessive algae, dirt, or other sediments accumulate inside the frame, it can be easily removed for cleaning, effectively reducing the workload for workers.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A return water filtration device for a cooling tower includes a frame with an open top, placed inside a buffer water tank of the cooling tower. The height of the frame is greater than the height of the buffer water tank. Regularly arranged filter holes are formed on the four sides and bottom of the frame. Guide plates are hinged to the top of the left and right sides of the frame. The height of the frame being greater than the buffer water tank facilitates the guide plates overlapping the inclined surface of the inner wall of the cooling tower, which helps guide the circulating water into the frame. Symmetrical baffles are provided on the outermost ends of the left and right sides of the guide plates near the frame to prevent circulating water from flowing out of the frame. Cooled circulating water flows down the inclined surface of the inner wall of the cooling tower and enters the frame under the action of the guide plates and baffles. Algae, dirt, and other impurities in the circulating water are deposited by the filter holes. The object is blocked and remains inside the frame, while the circulating water flows to the filter holes at the bottom of the buffer tank and finally flows into the external collection pool through the collection tank. The frame is provided with width limiting plates on the left and right sides and length limiting plates on the front and rear sides. The sum of the width of the frame and the length of the width limiting plates on the left and right sides is slightly less than the width of the buffer tank, and the sum of the length of the frame and the length of the length limiting plates on the front and rear sides is slightly less than the length of the buffer tank. This ensures that the frame is restricted and does not shift when it is placed in the buffer tank. When the guide plate is close to the inclined surface of the inner wall of the cooling tower, the guide plates between adjacent frames will overlap each other, and the baffles on them will abut each other, preventing the circulating water from flowing out of the guide plate and flowing into the frame below the guide plate.

[0008] Furthermore, the guide plate is an elastic thin plate, which facilitates the overlapping and bonding of adjacent guide plates together.

[0009] Furthermore, the top of the frame is equipped with a handle, which makes it convenient for staff to lift and remove the frame to clean moss, dirt and other sediments and place the frame into the buffer water tank.

[0010] Furthermore, the bottom of the frame is provided with support legs to ensure that there is a certain space between the bottom of the frame and the filter holes at the bottom of the buffer water tank, so that the circulating water can flow into the filter holes at the bottom of the buffer water tank and finally flow into the external water collection pool through the water collection tank.

[0011] Furthermore, the guide plate is designed with a trapezoidal shape.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This application employs a design that combines a frame and a baffle plate. The frame is placed inside a buffer tank, and the baffle plate and baffle plate allow the circulating water to first flow through the four sides and bottom of the frame for filtration, removing algae, dirt, and other sediments from the circulating water. The water then flows into the buffer tank and finally into an external collection pool. This design facilitates disassembly and installation, preventing sediment from clogging the filter holes at the bottom of the buffer tank, which could reduce the amount of filtered water flowing into the buffer tank and impact the production system. When excessive algae, dirt, or other sediments accumulate inside the frame, it can be easily removed for cleaning, effectively reducing the workload for workers. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the cooling tower water collection tank structure;

[0016] Figure 3 This is a diagram illustrating the effect of using this utility model;

[0017] Figure 4 This is a front view of the frame placed inside the buffer water tank.

[0018] In the diagram: 1. Frame; 2. Filter hole; 3. Width limiting plate; 4. Support leg; 5. Length limiting plate; 6. Guide plate; 7. Baffle; 8. Handle; 9. Inclined inner wall of cooling tower; 10. Buffer water tank; 11. Hinge. Detailed Implementation

[0019] 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.

[0020] like Figure 1-4As shown, a return water filtration device for a cooling tower includes a frame 1 with an open top, placed inside a buffer water tank 10 of the cooling tower. The frame 1 has a handle 8 at the top for easy lifting and removal by staff to clean algae, dirt, and other sediments before placing it into the buffer water tank 10. The frame 1 is higher than the buffer water tank 10. The four sides and bottom of the frame 1 have regularly arranged filter holes 2. Guide plates 6 are hinged to the top of the left and right sides of the frame 1 via hinges 11. The guide plates 6 are designed in a trapezoidal shape and are thin, elastic plates that allow adjacent guide plates 6 to overlap and fit together. The height of the frame 1 being higher than the buffer water tank 10 allows the guide plates to overlap the inclined surface 9 of the inner wall of the cooling tower, facilitating the flow of circulating water into the frame. Symmetrical baffles 7 are provided on the outermost ends of the left and right sides of the guide plates 6 near the frame 1 to prevent circulating water from flowing out of the guide plates 6. Cooled circulating water flows from the cooling tower... The water flows downwards from the inclined surface 9 of the inner wall of the tower, and enters the frame 1 under the action of the guide plate 6 and the baffle 7. Under the action of the filter hole 2, the algae, dirt and other sediments in the circulating water are blocked and retained in the frame 1. The circulating water then flows to the filter hole at the bottom of the buffer tank 10, and finally flows into the external collection pool through the collection tank. The frame 1 is provided with width limiting plates 3 on the left and right sides, and length limiting plates 5 on the front and rear sides. The width of the frame 1 and the length of the width limiting plates 3 on the left and right sides are... The sum of the lengths is slightly less than the width of the buffer water tank 10, and the sum of the length of the frame 1 and the lengths of the longitudinal limiting plates 5 on the front and rear sides is slightly less than the length of the buffer water tank 10. This ensures that the frame 1 is restricted and does not shift when it is placed in the buffer water tank 10. In this way, when the guide plate 6 is close to the inclined surface 9 of the inner wall of the cooling tower, the guide plates 6 between adjacent frames 1 will overlap each other, and the baffles 7 on them will abut each other, preventing the circulating water from flowing out of the guide plate 6 and flowing into the frame 1 below the guide plate 6.

[0021] Furthermore, the bottom of the frame 1 is provided with support legs to ensure that there is a certain space between the bottom of the frame 1 and the filter hole at the bottom of the buffer water tank 10, so that the circulating water can flow into the filter hole at the bottom of the buffer water tank 10 and finally flow into the external water collection tank through the water collection tank.

[0022] Working principle and usage process of this utility model:

[0023] like Figure 2As shown, the existing cooling tower has nine buffer water tanks 10 at its bottom. First, the frame 1 is placed into the buffer water tank 10 with the guide plate 6 on the same side as the inclined surface 9 of the inner wall of the cooling tower along its length. The hinged guide plate 6 overlaps on the inclined surface 9 of the inner wall of the cooling tower. Since the sum of the width of the frame 1 and the length of the width limiting plates 3 on the left and right sides is slightly less than the width of the buffer water tank 10, and the sum of the length of the frame 1 and the length of the length limiting plates 5 on the front and rear sides is slightly less than the length of the buffer water tank 10, the frame 1 does not move when it is placed into the buffer water tank 10 due to the restriction on all sides. Thus, when the guide plate 6 is tightly attached to the inclined surface 9 of the inner wall of the cooling tower, the guide plates 6 between adjacent frames 1 will overlap each other, and the baffles 7 on them will abut against each other (e.g., Figure 3 , Figure 4 As shown, the cooled circulating water flows down from the inclined surface 9 of the inner wall of the cooling tower into the guide plate 6. Due to the presence of the baffle 7, the circulating water either flows into the adjacent guide plate 6 or into the frame 1 below the guide plate 6. Subsequently, under the action of the filter holes 2, the algae, dirt and other sediments in the circulating water are blocked and remain in the frame 1. The filtered circulating water then flows to the filter holes at the bottom of the buffer water tank 10, and finally flows into the external water collection pool through the collection tank. When there is too much algae, dirt and other sediment in the frame 1 and it needs to be cleaned, the staff only needs to lift the handle 8, take out the device to clean the algae, dirt and other sediment in the frame 1, and then put the device back into the buffer water tank 9. This reduces the labor intensity of the staff.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A return water filtration device for cooling towers, characterized in that: The system includes a frame with an open top, which is placed inside a cooling tower buffer water tank. The height of the frame is greater than that of the buffer water tank. The frame has regularly arranged filter holes on its four sides and bottom. Guide plates are hinged to the top of the left and right sides of the frame. Symmetrical baffles are provided on the outermost ends of the guide plates on the left and right sides closest to the frame. Width-limiting plates are provided on the left and right sides of the frame, and length-limiting plates are provided on the front and rear sides of the frame. The sum of the width of the frame and the lengths of the width-limiting plates on the left and right sides is slightly less than the width of the buffer water tank, and the sum of the length of the frame and the lengths of the length-limiting plates on the front and rear sides is slightly less than the length of the buffer water tank.

2. The return water filtration device for cooling towers according to claim 1, characterized in that: The guide plate is an elastic thin plate.

3. The return water filtration device for cooling towers according to claim 1, characterized in that: The frame is equipped with a handle at the top.

4. The return water filtration device for cooling towers according to claim 1, characterized in that: The frame is equipped with support legs at the bottom.

5. The return water filtration device for a cooling tower according to claim 1, characterized in that: The guide vane is designed with a trapezoidal shape.

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