A multi-stage purification treatment system for PET bottle chip production wastewater

Abstract

The utility model discloses a kind of multistage purification treatment systems of PET bottle piece production sewage, including treatment box, fixedly connected with baffle in treatment box, baffle is divided into sedimentation tank and treatment pool by treatment box, start speed reducer motor drives filter drum rotation, the setting of filter drum can play the role of slow flow, still can be collected and filtered to the debris in sewage by the rotation of filter drum, debris moves to scraper with filter drum, debris on the surface of filter drum is scraped off by scraper, debris enters collection tank along slope and is collected, without shutdown when cleaning debris, guarantee the continuity of filtration;Add reagent to treatment pool, rotate by the second motor driven rotating shaft and stirring plate, mix water and reagent in treatment pool, adjust the ph of sewage, and react with sewage, after reaction, water is filtered again in ultrafilter, improve filtration effect.

Description

Technical Field

[0001] This utility model relates to the field of wastewater purification and treatment technology, specifically to a multi-stage purification and treatment system for wastewater from PET bottle flake production. Background Technology

[0002] In the production of PET materials, the wastewater from cleaning PET is discharged by pumps. However, when the wastewater contains a lot of impurities and residual material fragments, it can easily cause equipment blockage.

[0003] Patent CN207811315U discloses a wastewater treatment device for PET plastic production, comprising a wastewater tank, a wastewater pipe, and a drain pipe located at the bottom of the wastewater tank. A mixer is installed at the bottom of the wastewater tank, and a horizontally pull-out support net is also provided inside the tank. A filter screen is laid on the support net, and a retractable tray is located on one side below the support net. The device is simple to operate, requires low labor intensity, and the wastewater treated in the wastewater tank does not pollute the environment.

[0004] However, conventional filtration is relatively simple, only able to filter small fragments, resulting in poor filtration efficiency. Furthermore, wastewater treatment needs to be stopped when cleaning up the fragments, and continuous filtration of wastewater is not possible. Utility Model Content

[0005] The purpose of this invention is to provide a multi-stage purification system for wastewater from PET bottle flake production, in order to solve the technical problems of a single filtration method and the need to shut down the machine to clean blockages during the discharge process.

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

[0007] A multi-stage purification system for PET bottle flake production wastewater includes a treatment tank with a partition fixedly connected inside, dividing the treatment tank into a sedimentation tank and a treatment tank. An inlet pipe connected to the sedimentation tank is provided on the surface of the treatment tank, and a connecting pipe connected to the treatment tank is provided on the treatment tank. One end of the connecting pipe is fixedly connected to an ultrafilter, and a drain pipe is fixedly connected to the lower part of the ultrafilter surface. A debris filtration mechanism is located in the sedimentation tank for filtering debris from the PET bottle flake production wastewater. A treatment mechanism is located in the treatment tank for mixing and agitating the wastewater in the treatment tank.

[0008] As a further embodiment of this utility model, the debris filtering mechanism includes brackets symmetrically arranged on the top of the processing box, a filter drum rotatably connected between the two brackets, a geared motor fixedly installed on one side of the bracket, and the output shaft end of the geared motor fixedly connected to the filter drum.

[0009] As a further embodiment of this utility model, the filter drum is rotatably connected to the sedimentation tank, the height of the baffle is lower than the height of the treatment box, and a drain pipe connected to the sedimentation tank is provided on the surface of the treatment box.

[0010] As a preferred embodiment of this utility model, a collection box is fixedly connected to the top of the processing box, and a ramp is fixedly connected to the side of the collection box near the filter drum. A scraper that fits against the surface of the filter drum is fixedly connected to the surface of the ramp.

[0011] As a further preferred embodiment of this utility model, the processing mechanism includes a second motor fixedly installed on one side of the processing box, a rotating shaft fixedly connected to the output shaft end of the second motor, the rotating shaft being rotatably connected to the processing pool, and agitation plates being evenly arranged on the surface of the rotating shaft.

[0012] As a further embodiment of this utility model, the rotating shaft is hollow, and the stirring plate is provided with an air outlet that communicates with the rotating shaft. An air inlet pipe is rotatably connected to the side of the processing box away from the second motor. One end of the air inlet pipe is connected to an external air pump, and the other end of the air inlet pipe is connected to the rotating shaft.

[0013] As a preferred embodiment of this utility model, the water inlet pipe is located at the upper part of the surface of the treatment tank, and a valve is installed on the sewage discharge pipe.

[0014] Compared with existing technologies, the multi-stage purification system for PET bottle flake production wastewater provided by this utility model has the following beneficial effects: In the debris filtration mechanism, wastewater enters the sedimentation tank through the inlet pipe. The geared motor is started to drive the filter drum to rotate. The filter drum can both slow down the flow and collect and filter debris in the wastewater through its rotation. The debris moves with the filter drum to the scraper, where it is scraped off from the surface of the filter drum. The debris then enters the collection box along the slope and is collected. There is no need to stop the machine when cleaning the debris, ensuring continuous filtration. Chemicals are added to the treatment tank, and a second motor drives the rotating shaft and agitator to rotate, mixing the water and chemicals in the treatment tank, adjusting the pH of the wastewater, and reacting with the wastewater. The reacted water enters the ultrafiltration unit for further filtration, improving the filtration effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only examples of embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the debris filtering mechanism in an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the collection box, ramp, and scraper in an embodiment of this utility model;

[0019] Figure 4 This is a schematic diagram of the processing mechanism in an embodiment of the present invention.

[0020] Figure label:

[0021] 1. Treatment tank; 2. Baffle plate; 3. Sedimentation tank; 4. Treatment tank; 5. Inlet pipe; 6. Connecting pipe; 7. Ultrafilter; 8. Drain pipe; 9. Debris filtration mechanism; 901. Support; 902. Gear motor; 903. Filter drum; 904. Collection box; 905. Inclined ramp; 906. Scraper; 10. Sewage pipe; 11. Treatment mechanism; 1101. Second motor; 1102. Rotating shaft; 1103. Stirring plate; 1104. Air outlet; 1105. Air inlet pipe. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0023] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0024] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to the internal connection of two components; they can refer to a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present invention should be understood according to the specific circumstances.

[0025] like Figures 1-4 As shown in the figure, an embodiment of the present invention provides a multi-stage purification system for wastewater from PET bottle flake production, comprising a treatment tank 1, a debris filtration mechanism 9, and a treatment mechanism 11.

[0026] A partition 2 is fixedly connected inside the treatment tank 1, dividing the treatment tank 1 into a sedimentation tank 3 and a treatment tank 4. An inlet pipe 5 connected to the sedimentation tank 3 is provided on the surface of the treatment tank 1. A connecting pipe 6 connected to the treatment tank 4 is provided on the treatment tank 1. An ultrafilter 7 is fixedly connected to one end of the connecting pipe 6. A drain pipe 8 is fixedly connected to the lower part of the surface of the ultrafilter 7. A debris filtration mechanism 9 is provided in the sedimentation tank 3 for filtering debris in the wastewater from PET bottle flake production. A treatment mechanism 11 is provided in the treatment tank 4 for mixing and stirring the wastewater in the treatment tank 4.

[0027] In order to filter and collect debris in wastewater, the debris filtration mechanism 9 includes brackets 901 symmetrically arranged on the top of the treatment tank 1, a filter drum 903 rotatably connected between the two brackets 901, a geared motor 902 fixedly installed on one side of the brackets 901, and the output shaft end of the geared motor 902 fixedly connected to the filter drum 903.

[0028] In order to settle the sewage and improve the filtration effect, the filter drum 903 is rotatably connected to the sedimentation tank 3. The height of the baffle 2 is lower than the height of the treatment box 1. The surface of the treatment box 1 is provided with a sewage pipe 10 that is connected to the sedimentation tank 3.

[0029] To remove debris from the surface of the filter drum 903, a collection box 904 is fixedly connected to the top of the processing box 1. A ramp 905 is fixedly connected to the side of the collection box 904 near the filter drum 903, and a scraper 906 that is in contact with the surface of the filter drum 903 is fixedly connected to the surface of the ramp 905. The debris is scraped off by the scraper 906 and collected in the collection box 904.

[0030] To improve the mixing speed of chemical reagents and water, the treatment mechanism 11 includes a second motor 1101 fixedly installed on one side of the treatment tank 1. A rotating shaft 1102 is fixedly connected to the output shaft end of the second motor 1101. The rotating shaft 1102 is rotatably connected inside the treatment tank 4, and stirring plates 1103 are evenly arranged on the surface of the rotating shaft 1102. The second motor 1101 drives the rotating shaft 1102 and the stirring plates 1103 to rotate, thereby agitating the water in the treatment tank 4 and improving the mixing effect of the reagents and water.

[0031] To aerate the wastewater, the rotating shaft 1102 is hollow, and the agitator plate 1103 has an air outlet 1104 connected to the rotating shaft 1102. An air inlet pipe 1105 is rotatably connected to the side of the treatment tank 1 furthest from the second motor 1101. One end of the air inlet pipe 1105 is connected to an external air pump, and the other end is connected to the rotating shaft 1102. Air is introduced into the air inlet pipe 1105 and discharged from the air outlet 1104, increasing the contact area with the water.

[0032] In order to discharge the precipitated impurities, the water inlet pipe 5 is located at the upper part of the surface of the treatment tank 1, and the sewage discharge pipe 10 is equipped with a valve.

[0033] During use, wastewater enters the sedimentation tank 3 through the inlet pipe 5, is filtered by the debris filter mechanism 9, settles in the sedimentation tank 3, and then enters the treatment tank 4. After pH adjustment and chemical reaction in the treatment tank 4, it enters the ultrafiltration unit 7 for filtration and is discharged from the drain pipe 8. A booster pump is installed on the connecting pipe 6 to improve the filtration effect of the ultrafiltration unit 7 on the water.

[0034] The geared motor 902 starts and drives the filter drum 903 to rotate. The filter drum 903 can slow down the flow and collect and filter debris in the sewage through the rotation of the filter drum 903. The debris moves to the scraper 906 with the filter drum 903, and the scraper 906 scrapes off the debris on the surface of the filter drum 903. The debris enters the collection box 904 along the slope 905 and is collected.

[0035] Add chemicals into treatment tank 4, and drive the rotating shaft 1102 and the stirring plate 1103 to rotate via the second motor 1101 to mix the water and chemicals in treatment tank 4, adjust the pH of the sewage, and react with the sewage to improve the sewage treatment effect.

[0036] The foregoing has shown and described the basic principles of the present invention. The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. The above embodiments and descriptions in the specification are only illustrative of the principles of the present invention. Any modifications, equivalent substitutions, and improvements made within the scope of the present invention without departing from the scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-stage purification system for wastewater from PET bottle flake production, characterized in that... include: A treatment tank (1) is fixedly connected to a partition (2), which divides the treatment tank (1) into a sedimentation tank (3) and a treatment tank (4). An inlet pipe (5) connected to the sedimentation tank (3) is provided on the surface of the treatment tank (1). A connecting pipe (6) connected to the treatment tank (4) is provided on the treatment tank (1). An ultrafilter (7) is fixedly connected to one end of the connecting pipe (6). A drain pipe (8) is fixedly connected to the lower part of the surface of the ultrafilter (7). The debris filtration mechanism (9) is installed in the sedimentation tank (3) to filter debris in the wastewater from PET bottle flake production. The treatment unit (11) is installed in the treatment tank (4) to mix and stir the sewage in the treatment tank (4); The debris filtration mechanism (9) includes brackets (901) symmetrically arranged on the top of the processing box (1), a filter drum (903) is rotatably connected between the two brackets (901), a geared motor (902) is fixedly installed on one side of the bracket (901), and the output shaft end of the geared motor (902) is fixedly connected to the filter drum (903). The processing mechanism (11) includes a second motor (1101) fixedly installed on one side of the processing box (1). The output shaft of the second motor (1101) is fixedly connected to a rotating shaft (1102). The rotating shaft (1102) is rotatably connected to the processing pool (4). Agitator plates (1103) are evenly arranged on the surface of the rotating shaft (1102).

2. The multi-stage purification system for PET bottle flake production wastewater according to claim 1, characterized in that: The filter drum (903) is rotatably connected to the sedimentation tank (3). The height of the partition (2) is lower than the height of the treatment box (1). The surface of the treatment box (1) is provided with a drain pipe (10) that is connected to the sedimentation tank (3).

3. The multi-stage purification system for PET bottle flake production wastewater according to claim 1, characterized in that: The top of the processing box (1) is fixedly connected to a collection box (904), and a ramp (905) is fixedly connected to the side of the collection box (904) near the filter drum (903). A scraper (906) that is in contact with the surface of the filter drum (903) is fixedly connected to the surface of the ramp (905).

4. The multi-stage purification system for PET bottle flake production wastewater according to claim 1, characterized in that: The rotating shaft (1102) is hollow, and the stirring plate (1103) is provided with an air outlet (1104) connected to the rotating shaft (1102). The processing box (1) is rotatably connected to an air inlet pipe (1105) on the side away from the second motor (1101). One end of the air inlet pipe (1105) is connected to an external air pump, and the other end of the air inlet pipe (1105) is connected to the rotating shaft (1102).

5. The multi-stage purification system for PET bottle flake production wastewater according to claim 2, characterized in that: The water inlet pipe (5) is located on the upper part of the surface of the treatment tank (1), and the sewage pipe (10) is equipped with a valve.

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