A circulating water purification device for phosphate ester production

Abstract

This utility model discloses a circulating water purification device for phosphate ester production, including a water tank, a filter tank, and a sedimentation device. The water tank is equipped with a water pump. The filter includes a lower shell and an upper shell that can be separated vertically. The outlet of the water pump is connected to a delivery pipe communicating with the top of the upper shell, and a filter is installed between the lower and upper shells. The drain pipe at the bottom of the lower shell is connected to the water pump. This circulating water purification device for phosphate ester production employs a combined process of filtration and two-stage sedimentation. The filtration effectively intercepts most suspended solids and larger particulate pollutants in the water, and the two-stage sedimentation tank removes fine suspended particles and light pollutants through two deep sedimentations. This improves the purification effect of the circulating water, meets the water quality requirements for phosphate ester production, allows for quick filter replacement, and is simple and convenient to operate.

Description

Technical Field

[0001] This utility model relates to the technical field of phosphate ester production equipment, specifically a circulating water purification device for phosphate ester production. Background Technology

[0002] Phosphate esters, as important chemical products, are widely used in plasticizers, flame retardants, lubricant additives, and many other fields. Their production process requires a large amount of circulating water for cooling, washing, and other processes. This circulating water contains residual phosphate ester raw materials after use. If this water is directly reused without sufficient purification, the organic matter and suspended solids it contains will accumulate, leading to pipe scaling, equipment corrosion, reduced heat exchange efficiency, and potentially affecting the purity and quality of the final product. Therefore, efficient purification of the circulating water used in the production process is crucial for achieving water resource recycling, ensuring stable production and product quality, and reducing energy consumption and wastewater discharge.

[0003] Currently, common circulating water purification methods mostly employ filtration or sedimentation processes. Traditional filtration equipment typically encapsulates filters inside a tank, requiring the entire tank to be opened for replacement, a cumbersome and time-consuming process. Sedimentation alone has limited effectiveness in separating micron-sized and emulsified light pollutants, resulting in incomplete purification and effluent quality that fails to meet the reuse requirements of high-end production. Therefore, this application provides a circulating water purification device for phosphate ester production to solve the aforementioned problems. Utility Model Content

[0004] The technical problem this invention aims to solve is to overcome existing defects and provide a circulating water purification device for phosphate ester production. This device employs a combined process of filtration and two-stage sedimentation. First, filtration effectively intercepts most suspended solids and larger particulate pollutants in the water. Then, the two-stage sedimentation tank performs two deep sedimentation processes to remove fine suspended particles and light pollutants. This improves the purification effect on the circulating water, meets the water quality requirements of phosphate ester production, allows for quick filter replacement, and is simple and convenient to operate, effectively solving the problems in the background technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a circulating water purification device for phosphate ester production, comprising a water tank, a filter tank, and a sedimentation device. The water tank is equipped with a water pump. The filter includes a lower shell and an upper shell that can be separated vertically. The outlet of the water pump is provided with a conveying pipe communicating with the top of the upper shell. A filter is provided between the lower shell and the upper shell. The drain pipe at the bottom of the lower shell is connected to the water pump. The outlet of the water pump is connected to the sedimentation tank device through a lift pipe. The sedimentation device is provided with a return pipe that conveys the purified water back to the water tank.

[0006] As a preferred embodiment of this utility model, the side of the lower housing is provided with an electric push rod that is connected to the side of the upper housing.

[0007] As a preferred embodiment of the present invention, the filter includes a filter screen filled with sand and activated carbon. Both the upper and lower ends of the filter screen are provided with annular inserts. The lower end of the inner side of the upper housing is provided with a sealing ring that contacts the annular inserts on the upper side.

[0008] As a preferred embodiment of the present invention, the sedimentation device includes two sedimentation tanks arranged in sequence. A central tube extending to the lower end of the interior of the sedimentation tank is provided in the middle of the upper surface of the sedimentation tank, and a drain valve is provided on the drain pipe at the bottom of the sedimentation tank.

[0009] As a preferred embodiment of this utility model, the lifting pipe is connected to the central pipe on the first sedimentation tank in the sedimentation device, and a connecting pipe is provided on the upper side of the first sedimentation tank for connecting to the central pipe on the second sedimentation tank.

[0010] As a preferred technical solution of this utility model, the reflux pipe is installed on the upper side of the second sedimentation tank.

[0011] As a preferred embodiment of this utility model, the side of the central tube and the inner side of the sedimentation tank are provided with cross-arranged guide plates.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The circulating water purification device for phosphate ester production of this utility model adopts a combination process of filtration and two-stage sedimentation. It can first effectively intercept most of the suspended solids and larger particulate pollutants in the water through filtration, and then remove fine suspended particles and light pollutants through two deep sedimentation processes in the two-stage sedimentation tank. This can improve the purification effect of circulating water, meet the water quality requirements of phosphate ester production, and also allow for quick filter replacement. It is simple to operate and convenient to use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the rear view structure of this utility model; Figure 3 This is a schematic diagram of the filter tank in this utility model; Figure 4 This is a schematic diagram of the precipitation device in this utility model.

[0014] In the diagram: 1. Water tank, 2. Water pump, 21. Delivery pipe, 3. Lower shell, 31. Electric push rod, 32. Upper shell, 33. Sealing ring, 4. Filter screen, 41. Annular insert plate, 5. Water pump, 51. Lifting pipe, 6. Sedimentation tank, 61. Central pipe, 62. Guide plate, 63. Drain valve, 64. Connecting pipe, 7. Return pipe. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-4 This utility model provides a technical solution: a circulating water purification device for phosphate ester production, including a water tank 1, a filter tank, and a sedimentation device. The water tank 1 is equipped with a water pump 2. The filter includes a lower housing 3 and an upper housing 32 that can be separated vertically. The outlet of the water pump 2 is connected to a conveying pipe 21 that communicates with the top of the upper housing 32. A filter is installed between the lower housing 3 and the upper housing 32. A drain pipe at the bottom of the lower housing 3 is connected to a water pump 5. The outlet of the water pump 5 is connected to the sedimentation tank via a riser pipe 51. The sedimentation device is equipped with a return pipe 7 that transports purified water to the water tank 1. The water pump 2 draws circulating water from the water tank 1 and conveys it to the filter tank through the conveying pipe 21. A filter screen 4 filled with sand and activated carbon filters the circulating water. The water pump 5 draws the filtered water and conveys it to the sedimentation tank 6 through the riser pipe 51. After two sedimentation processes, the overflow water flows back to the water tank 1 through the return pipe 7, thus completing the purification of the circulating water.

[0017] Furthermore, the lower housing 3 has an electric push rod 31 connected to the side of the upper housing 32. The filter includes a filter screen 4 filled with sand and activated carbon. The upper and lower end faces of the filter screen 4 are provided with annular insert plates 41. The lower end of the inner side of the upper housing 32 is provided with a sealing ring 33 that contacts the annular insert plate 41 on the upper side. When the filter screen 4 needs to be replaced, first control the water pump 2 and water pump 5 to stop working, then control the electric push rod 31 to extend, the electric push rod 31 pushes the upper housing 32 to move upward, then remove and replace the filter screen 4 with the filter element inside, and finally control the electric push rod 31 to reset, and control the water pump 2 and water pump 5 to work in sequence.

[0018] Furthermore, the sedimentation device includes two sedimentation tanks 6 arranged in sequence. A central pipe 61 extending to the lower end of the interior of the sedimentation tank 6 is provided in the middle of the upper surface of the sedimentation tank 6. A drain valve 63 is provided on the drain pipe at the bottom of the sedimentation tank 6. The drain valve is opened periodically to discharge and clean the sediment in the sedimentation tank 6.

[0019] Furthermore, the riser pipe 51 is connected to the central pipe 61 on the first sedimentation tank 6 in the sedimentation device. The upper side of the first sedimentation tank 6 is provided with a connecting pipe 64 for connecting the central pipe 61 on the second sedimentation tank 6. The return pipe 7 is installed on the upper side of the second sedimentation tank 6.

[0020] Furthermore, the side of the central pipe 61 and the inner side of the sedimentation tank 6 are provided with cross-arranged guide plates 62, which can increase the movement path of circulating water in the sedimentation tank 6, thereby improving the sedimentation effect of impurities.

[0021] The water pump 2, electric push rod 31 and water pump 5 used in this utility model are all common electrical equipment in the prior art, and the synchronous extension and retraction of the two electric push rods 31 is a conventional technical means in this invention. Their working method and circuit structure are well known technologies and will not be described in detail here.

[0022] When using: Pump 2 draws circulating water from pool 1 and delivers it to filter tank through delivery pipe 21. Filter screen 4, which is filled with sand and activated carbon, filters the circulating water. Pump 5 draws the filtered water and delivers it to the central pipe 61 of sedimentation tank 6 through riser pipe 51. After two sedimentation processes, the overflow water flows back to pool 1 through return pipe 7, thus completing the purification of circulating water. When the filter screen 4 needs to be replaced, first control the water pump 2 and water pump 5 to stop working, then control the electric push rod 31 to extend, the electric push rod 31 pushes the upper housing 32 to move upward, then remove and replace the filter screen 4 with the filter element inside, and finally control the electric push rod 31 to reset, and control the water pump 2 and water pump 5 to work in sequence. Regularly open the drain valve to drain and clean the sediment in sedimentation tank 6.

[0023] This invention employs a combined process of filtration and two-stage sedimentation. The filtration first effectively intercepts most of the suspended solids and larger particulate pollutants in the water, and then the two-stage sedimentation tank performs two deep sedimentations to remove fine suspended particles and light pollutants. This improves the purification effect on circulating water, meets the requirements of phosphate esters for circulating water quality, and allows for quick filter replacement. The operation is simple and convenient.

[0024] The parts not disclosed in this utility model are all prior art, and their specific structures, materials, and working principles will not be described in detail. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circulating water purification device for phosphate ester production, comprising a water tank (1), a filter tank, and a sedimentation device, characterized in that: The water tank (1) is equipped with a water pump (2). The filter tank includes a lower shell (3) and an upper shell (32) that can be separated. The outlet of the water pump (2) is provided with a conveying pipe (21) that communicates with the top of the upper shell (32). A filter is provided between the lower shell (3) and the upper shell (32). The drain pipe at the bottom of the lower shell (3) is connected to a water pump (5). The outlet of the water pump (5) is connected to a sedimentation tank device through a lift pipe (51). The sedimentation device is provided with a return pipe (7) that transports the purified water to the water tank (1).

2. The circulating water purification device for phosphate ester production according to claim 1, characterized in that: The side of the lower housing (3) is provided with an electric push rod (31) that is connected to the side of the upper housing (32).

3. The circulating water purification device for phosphate ester production according to claim 1, characterized in that: The filter includes a filter screen (4) filled with sand and activated carbon. Both the upper and lower ends of the filter screen (4) are provided with annular inserts (41). The lower end of the inner side of the upper housing (32) is provided with a sealing ring (33) that contacts the annular inserts (41) on the upper side.

4. The circulating water purification device for phosphate ester production according to claim 1, characterized in that: The sedimentation device includes two sedimentation tanks (6) arranged in sequence. A central tube (61) extending to the lower end of the interior of the sedimentation tank (6) is provided in the middle of the upper surface of the sedimentation tank (6). A drain valve (63) is provided on the drain pipe at the bottom of the sedimentation tank (6).

5. The circulating water purification device for phosphate ester production according to claim 4, characterized in that: The riser pipe (51) is connected to the central pipe (61) on the first sedimentation tank (6) in the sedimentation device. The upper side of the first sedimentation tank (6) is provided with a connecting pipe (64) for connecting the central pipe (61) on the second sedimentation tank (6).

6. The circulating water purification device for phosphate ester production according to claim 5, characterized in that: The reflux pipe (7) is installed on the upper side of the second sedimentation tank (6).

7. The circulating water purification device for phosphate ester production according to claim 5, characterized in that: The side of the central tube (61) and the inner side of the sedimentation tank (6) are provided with cross-arranged guide plates (62).

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