A cooling tower backwater anti-vortex filter device

Abstract

The utility model belongs to cooling tower technical field discloses a kind of cooling tower backwater anti-vortex filtering devices, including filter screen, further include the backwater assembly for shunting backwater being arranged in the lower of filter screen, guide assembly for guiding and dividing water flow is installed in the backwater assembly;The backwater assembly includes piping groove, outlet pipe and waste pipe are provided in the piping groove, the top end of the outlet pipe is higher than the bottom surface of the piping groove, the top end of the waste pipe is flush with the bottom surface of the piping groove;The guide assembly includes the dividing frame being installed in the top end of the outlet pipe, the dividing frame is made of four anticlockwise arrangement angle steels, the top end of the dividing frame is provided with guide cover.The utility model discloses a kind of cooling tower backwater anti-vortex filtering devices, by filter screen side hole, umbrella-shaped guide cover and the three-stage water flow division and direction disturbance of dividing frame, effectively break circular water flow form, avoid backwater vortex generation, improve water flow stability.

Description

Technical Field

[0001] This utility model belongs to the field of cooling tower technology, and in particular relates to a cooling tower return water anti-vortex filtration device. Background Technology

[0002] Cooling towers are commonly used in industrial or air conditioning systems to dissipate heat through water circulation. The return water section involves the process of water flowing back from the bottom of the tower to the system. Currently, most cooling towers on the market exhibit vortex phenomena at the return water inlet. Firstly, when air is drawn into the vortex, a low-pressure zone may form at the center, causing air to be drawn into the water. Reduced air volume decreases the cooling tower's efficiency, and air bubbles in the water affect heat exchange. Furthermore, the introduction of oxygen can accelerate pipe corrosion, especially if the system contains metal pipes. Secondly, there are noise and vibration issues. Vortexes can cause unstable water flow, leading to pipe vibration and noise. Prolonged vibration can cause structural damage to pipes and pumps, such as loose joints or cracks. If the frequency of the vortex is close to the equipment's natural frequency, it can also cause resonance. Moreover, vortexes cause unstable return water flow, interfering with level sensor signals. Water level fluctuations can affect the stable operation of the cooling tower, leading to frequent adjustments in the level control system, increasing control complexity, and impacting the cooling tower's efficiency.

[0003] In today's increasingly energy-constrained world, the rational use of existing resources and the reduction of energy waste have received increasing attention. The vortex phenomenon in cooling towers can lead to a decrease in cooling efficiency, which may directly increase operating costs and shorten the lifespan of the entire cooling system, thus directly causing economic and energy waste. Therefore, it is urgent to find ways to avoid the vortex phenomenon.

[0004] Comparing this to Chinese patent CN219558889U, which discloses an anti-vortex return water filter for cooling towers, the filter includes an anti-vortex plate, a filter screen, and a square frame. The anti-vortex plate is installed on the upper part of the frame, and the filter screen is installed on the bottom and three sides of the frame. The other side has an opening connected to the return water inlet. While this method can increase the inlet water flow and prevent foreign objects from clogging the return water inlet, its ability to prevent vortexing at the return water inlet is limited, and it cannot prevent air from entering and causing cavitation in the air conditioning unit. Therefore, a new device needs to be designed. Utility Model Content

[0005] The purpose of this invention is to provide a cooling tower return water anti-vortex filtration device to solve the problems mentioned in the background art.

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

[0007] A cooling tower return water anti-vortex filtration device includes a filter screen and a return water assembly disposed below the filter screen for diverting return water. The return water assembly is equipped with a flow guiding component for guiding and dividing the water flow. The return water assembly includes a piping trench, in which a water outlet pipe and a waste discharge pipe are disposed. The top of the water outlet pipe is higher than the bottom surface of the piping trench, and the top of the waste discharge pipe is flush with the bottom surface of the piping trench. The flow guiding component includes a dividing frame installed at the top of the water outlet pipe. The dividing frame is composed of four clockwise arranged angle steels, and a flow guide cover is disposed at the top of the dividing frame.

[0008] Furthermore: the air deflector is umbrella-shaped, and the air deflector and the segmentation frame are welded together.

[0009] Furthermore: the top of the water outlet pipe is 40mm higher than the bottom of the piping trench, and the dividing frame is bolted to the top of the water outlet pipe.

[0010] Furthermore, the filter screen is a square box shape without a bottom surface, with holes of φ8mm in diameter and spaced 12mm apart on the sides.

[0011] Furthermore, the filter screen is made of stainless steel.

[0012] Furthermore, four connecting seats are evenly distributed at the four corners of the piping trench.

[0013] Compared with existing technologies, the beneficial effects are:

[0014] 1. Through the three-stage water flow division and directional disturbance of the filter screen side holes, umbrella-shaped guide cover and dividing frame, the circular water flow pattern is effectively broken, the backflow vortex is avoided, and the water flow stability is improved.

[0015] 2. The umbrella-shaped design of the flow guide shroud guides the water flow to spread evenly, and the dividing frame further divides the water flow into four streams to avoid local turbulence, improve water return efficiency and the overall performance of the cooling system; the dividing frame is bolted to the water outlet pipe, the overall structure is sturdy and easy to disassemble and maintain, the structure is simple, the manufacturing cost is low, and it is easy to promote in the market.

[0016] 3. The stepped design of the waste discharge pipe and piping trough (the water outlet pipe is 40mm higher than the bottom surface) enables automatic separation of impurities, preventing impurities from entering the water pump and extending the life of the cooling system; the structure design of the waste discharge pipe being flush with the bottom of the trough allows mud and sand and impurities to be discharged directly through the waste discharge pipe during cleaning, eliminating the need for additional cleaning of the water outlet pipe and reducing maintenance costs.

[0017] 4. Through multi-stage diversion, filtration and impurity removal design, it has the advantages of anti-vortex, anti-clogging, easy maintenance and long service life, which significantly improves the reliability and energy efficiency of the cooling tower return water system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a cooling tower return water anti-vortex filtration device according to the present invention;

[0019] Figure 2 This is a schematic diagram of the filter screen of a cooling tower return water anti-vortex filtration device according to the present invention;

[0020] Figure 3 This is a schematic diagram of the return water component of a cooling tower return water anti-vortex filtration device according to the present invention;

[0021] Figure 4 This is a front perspective view of the return water component of the cooling tower return water anti-vortex filtration device described in this utility model;

[0022] Figure 5 This is a front perspective view of the flow guiding component of the cooling tower return water anti-vortex filtration device described in this utility model;

[0023] Figure 6 This is a bottom view of the flow guiding component of the cooling tower return water anti-vortex filtration device described in this utility model.

[0024] In the attached diagram, the following are the reference numerals: 1. Filter screen; 201. Piping trough; 202. Connecting seat; 203. Water outlet pipe; 204. Waste discharge pipe; 301. Flow guide; 302. Divider frame. Detailed Implementation

[0025] 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.

[0026] Please see Figures 1-6 A cooling tower return water anti-vortex filtration device includes a filter screen 1 and a return water assembly disposed below the filter screen 1 for diverting return water. The return water assembly is equipped with a flow guiding component for guiding and dividing the water flow.

[0027] In this embodiment: the filter screen 1 is a square box without a bottom surface, and the side is distributed with holes with a vertical spacing of 12mm and a diameter of φ8mm. The filter screen 1 is made of stainless steel. Cooling water will pass through the side of the filter screen 1, which will not only filter out large impurities, but also divide the water flow into multiple fine water streams that flow into the piping groove 201.

[0028] In this embodiment: the water return assembly includes a piping trough 201, in which an outlet pipe 203 and a waste pipe 204 are installed. The top of the outlet pipe 203 is higher than the bottom surface of the piping trough 201, and the top of the waste pipe 204 is flush with the bottom surface of the piping trough 201. The top of the outlet pipe 203 is 40mm higher than the bottom surface of the piping trough 201. Four connecting seats 202 are evenly distributed at the four corners of the piping trough 201. The piping trough 201 is fixedly installed at the cooling tower return water inlet through the connecting seats 202. The cooling water flows out from the outlet pipe 203 through a three-stage segmentation disturbance. At the same time, since the top of the outlet pipe 203 is higher than the bottom surface of the piping trough 201, and the top of the waste pipe 204 is flush with the bottom surface of the piping trough 201, dirt, impurities, etc. fall into the waste pipe 204 and are discharged during cleaning, preventing them from entering the outlet pipe 203, protecting the water pump, and extending the service life of the cooling system.

[0029] In this embodiment: the flow guiding component includes a dividing frame 302 installed at the top of the water outlet pipe 203. The dividing frame 302 is bolted to the top of the water outlet pipe 203. The dividing frame 302 is composed of four angle steels arranged clockwise. A flow guiding cover 301 is provided at the top of the dividing frame 302. The flow guiding cover 301 is umbrella-shaped and is welded to the dividing frame 302. Water passing through the filter screen 1 will flow onto the flow guiding cover 301. The flow guiding cover 301 will change the direction of the water flow in an umbrella shape. After the water flow changes direction, it flows downward. The dividing frame 302 below will divide the water flow again. In this way, the water flow is divided into four halves and flows into the water outlet pipe 203, avoiding the original circular water flow.

[0030] Working principle: The piping trough 201 is fixedly installed at the return water inlet of the cooling tower via the connecting seat 202. The cooling water first passes through the side of the filter screen 1, which not only filters out large impurities but also divides the water flow into multiple fine streams that flow into the piping trough 201. The water passing through the filter screen 1 flows onto the guide shroud 301, which changes the direction of the water flow in an umbrella-like shape. After the water flow changes direction, it flows downwards, where the dividing frame 302 further divides the water flow. In this way, the water flow is divided into four parts and flows into the outlet pipe 203, avoiding the original circular flow. This process of dividing and disturbing the water flow three times avoids the generation of vortices. At the same time, since the top of the outlet pipe 203 is higher than the bottom of the piping trough 201, and the top of the waste pipe 204 is flush with the bottom of the piping trough 201, dirt and impurities fall into the waste pipe 204 and are discharged during cleaning, preventing them from entering the outlet pipe 203, protecting the water pump, and extending the service life of the cooling system.

[0031] 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 cooling tower return water anti-vortex filtration device, comprising a filter screen (1), characterized in that: It also includes a water return component for diverting and returning water, which is provided below the filter screen (1), and the water return component is equipped with a flow guide component for guiding and dividing the water flow; The water return assembly includes a piping trench (201), in which a water outlet pipe (203) and a waste discharge pipe (204) are provided. The top of the water outlet pipe (203) is higher than the bottom of the piping trench (201), and the top of the waste discharge pipe (204) is flush with the bottom of the piping trench (201). The flow guiding assembly includes a dividing frame (302) installed at the top of the water outlet pipe (203). The dividing frame (302) is composed of four angle steels arranged clockwise, and a flow guiding cover (301) is provided at the top of the dividing frame (302).

2. The cooling tower return water anti-vortex filtration device according to claim 1, characterized in that: The air deflector (301) is umbrella-shaped, and the air deflector (301) and the dividing frame (302) are welded together.

3. The cooling tower return water anti-vortex filtration device according to claim 1, characterized in that: The top of the water outlet pipe (203) is 40mm higher than the bottom of the piping trench (201), and the dividing frame (302) and the top of the water outlet pipe (203) are bolted together.

4. The cooling tower return water anti-vortex filtration device according to claim 1, characterized in that: The filter screen (1) is a square box without a bottom surface, with holes of φ8mm in diameter and spaced 12mm apart on the sides.

5. A cooling tower return water anti-vortex filtration device according to claim 4, characterized in that: The filter screen (1) is made of stainless steel.

6. A cooling tower return water anti-vortex filtration device according to claim 1, characterized in that: The piping trench (201) has four connecting seats (202) evenly distributed at its four corners.

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