Waste water treatment device and method for polyamide 66 fiber production

Abstract

The invention discloses a wastewater treatment device and method for polyamide 66 fiber production, and belongs to the technical field of wastewater treatment. According to the device, a three-stage precipitation space is formed through height gradually-changing partition plates arranged in a box body, and a matched separation mechanism and a matched collection mechanism cooperatively work. The separation mechanism adopts a cam structure driven by a motor to push a piston rod to do reciprocating motion, compressed air is injected into wastewater in a first precipitation space in a microbubble form through an air spraying pipe, and efficient separation of grease and particle impurities is achieved through the bubble adsorption effect. The collecting mechanism drives a liftable sliding ring and a collecting barrel arranged in the circumferential direction to rotate through a rotating shaft, floating oil and impurities are guided into the detachable collecting barrel through a guide plate, an insertion pipe at the bottom of the collecting barrel communicates with an annular groove, and grease is automatically gathered and discharged through a hollow rotating shaft and a liquid discharging pipe. The problems that attachments on the inner wall of a traditional oil collecting cover are difficult to clean and sediments are deposited are solved, and the pretreatment efficiency of the high-ammonia-nitrogen polyamide 66 production wastewater is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a wastewater treatment device and method for polyamide 66 fiber production. Background Technology

[0002] The wastewater from the production of polyamide 66 mainly comes from the production processes of diammonium phosphate, hexamethylenediamine, salt formation, and slicing. This wastewater is characterized by high ammonia nitrogen, high nitrate nitrogen, low carbon source, high requirements for hexamethylenediamine treatment, and poor biodegradability. This type of wastewater needs to be treated before it can be discharged.

[0003] A search revealed that application CN115072893B discloses a device and method for treating oily wastewater. However, this device has the following drawbacks during use:

[0004] 1. After prolonged use, the inside of the oil collection hood becomes difficult to clean, affecting subsequent collection and use.

[0005] 2. Furthermore, after impurities settle, it becomes difficult to clean them, and continued sedimentation affects the discharge of wastewater. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies where oil collection via an oil collection hood is difficult to clean after prolonged use, affecting subsequent collection and use; and where impurities are difficult to clean after sedimentation, and continued sedimentation affects wastewater discharge. Therefore, this invention proposes a wastewater treatment device and method for polyamide 66 fiber production.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A wastewater treatment device for polyamide 66 fiber production includes a tank, an inlet pipe extending through one side of the tank, a drain pipe extending through the other side of the tank, and two partitions with gradually changing heights fixed inside the tank to divide the tank into a first sedimentation space, a second sedimentation space, and a third sedimentation space.

[0009] The separation mechanism is located in the first sedimentation space and is used to separate oil and grease from the wastewater in the first sedimentation space.

[0010] The collection mechanism is located in the first sedimentation space and is used in conjunction with the separation mechanism to collect the separated oil and impurities.

[0011] A drain pipe is connected to one side of the box, and the top of the drain pipe is connected to a collection mechanism for discharging the collected grease.

[0012] In one possible design, the separation mechanism includes a support frame fixed to the top of the housing. The bottom of the support frame is fixedly connected to a support ring via two connecting columns. The top of the support ring is fixedly provided with multiple evenly distributed sleeve rods. A piston rod is slidably provided at one end of each sleeve rod, and an air jet pipe is connected to the other end of the sleeve rod. The bottom end of the air jet pipe extends into the first sedimentation space, and multiple exhaust holes are provided on its outer wall. An air intake pipe for air intake is connected to the outer wall of the sleeve rod. Both the air intake pipe and the air jet pipe are provided with one-way valves. A driving component is provided on the support frame for driving the piston rod to reciprocate within the sleeve rod.

[0013] In one possible design, the drive component includes a rotating shaft rotatably mounted on the top of a support frame, the rotating shaft being located between a plurality of piston rods, a cam for cooperating with the piston rods being fixedly sleeved on the outer wall of the rotating shaft, a motor being fixedly mounted on the top of the support frame, the output end of the motor being fixedly connected to the top end of the rotating shaft, and a spring being provided inside the sleeve, the two ends of the spring being fixedly connected to one side of the inner wall of the sleeve and one end of the piston rod, respectively.

[0014] In one possible design, the collection mechanism includes a sliding ring slidably fitted onto the outer wall of the rotating shaft. The outer wall of the sliding ring is fixedly provided with a plurality of connecting frames. A collection bucket for collecting grease impurities is detachably provided inside the connecting frames. A guide plate for guiding the grease impurities is fixedly provided on one side of the connecting frames.

[0015] In one possible design, the connecting frame has a groove adapted to the collection bucket, the top of the sliding ring is threaded with a nut ring, and the bottom of the nut ring abuts against multiple collection buckets.

[0016] In one possible design, a support plate is fixedly fitted onto the outer wall of the sliding ring. An annular groove is formed inside the support plate. An insertion hole corresponding to the collection bucket is formed on the top of the support plate. The bottom end of the insertion hole is connected to the annular groove. An insertion tube is inserted into the insertion hole and is fixedly installed at the bottom of the collection bucket. A connecting tube is wound around the bottom end of the rotating shaft. The bottom end of the connecting tube is connected to the rotating shaft, and the top end of the connecting tube is connected to the annular groove.

[0017] In one possible design, a support bar is fixedly installed in the first sedimentation space, the rotating shaft is rotatably mounted on the support bar, a stirring blade is fixedly sleeved at the bottom end of the rotating shaft, and a fixing disc for supporting the connecting pipe is fixedly sleeved on the outer wall of the rotating shaft.

[0018] A method for using a wastewater treatment device for polyamide 66 fiber production includes the following steps:

[0019] S1. First, the wastewater enters the first sedimentation space through the inlet pipe. At the same time, the motor is started to drive the rotating shaft to rotate. During the rotation of the rotating shaft, the piston rod moves and air is introduced into the wastewater. The air bubbles are used to make the grease and particulate impurities float upward.

[0020] S2. Secondly, the collection bucket can float as the water level rises, and the rotating shaft can drive the collection bucket to rotate and collect floating grease and particles when it rotates.

[0021] S3. Then, the collected grease can be discharged through the connecting pipe and the drain pipe, while the impurities remain in the collection bucket.

[0022] S4. Finally, remove the collection bucket from the connecting frame for cleaning, and the wastewater after oil-water separation will be separated and settled in the second and third sedimentation spaces, and then discharged through the drain pipe.

[0023] Beneficial effects:

[0024] In this invention, a wastewater treatment device for polyamide 66 fiber production utilizes a separation mechanism to drive gas through a jet pipe into the wastewater, forming microbubbles. These bubbles effectively adsorb oil particles in the wastewater, achieving efficient oil separation. Simultaneously, the stirring blades at the bottom of the rotating shaft provide additional stirring during the wastewater treatment process, which helps accelerate the sedimentation of suspended solids and the separation of oil in the wastewater.

[0025] In this invention, a wastewater treatment device for polyamide 66 fiber production has a collection mechanism and a separation mechanism that work closely together. Through the design of a sliding ring, a connecting frame, and a collection bucket, it can automatically collect the separated grease and impurities, which not only saves labor costs but also improves processing efficiency. At the same time, the detachable design of the collection bucket makes cleaning and replacement more convenient.

[0026] In this invention, the separation mechanism utilizes a motor-driven piston rod to reciprocate within a sleeve, generating bubbles to adsorb grease. The collection mechanism, through components such as a sliding ring, connecting frame, and collection bucket, automatically guides and collects the separated grease and impurities. Furthermore, the device features a convenient grease discharge function, and additional designs such as stirring blades and connecting pipes further enhance the efficiency and flexibility of wastewater treatment. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural schematic diagram of a wastewater treatment device for polyamide 66 fiber production proposed in this invention;

[0028] Figure 2 This is a schematic diagram of the installation structure of the jet pipe and collection cylinder of a wastewater treatment device for polyamide 66 fiber production proposed in this invention;

[0029] Figure 3 This is a schematic diagram of the sleeve installation structure of a wastewater treatment device for polyamide 66 fiber production proposed in this invention;

[0030] Figure 4 This is a schematic cross-sectional view of the sleeve structure of a wastewater treatment device for polyamide 66 fiber production proposed in this invention;

[0031] Figure 5 This is an exploded structural diagram of the collection cylinder and support frame of a wastewater treatment device for polyamide 66 fiber production proposed in this invention.

[0032] Figure 6 This is a schematic diagram of the bottom structure of the collection cylinder of a wastewater treatment device for polyamide 66 fiber production proposed in this invention;

[0033] Figure 7 This is a cross-sectional view of the support plate structure of a wastewater treatment device for polyamide 66 fiber production proposed in this invention.

[0034] In the diagram: 1. Box body; 2. Water inlet pipe; 3. Drain pipe; 4. Liquid drain pipe; 5. Baffle plate; 6. First sedimentation space; 7. Second sedimentation space; 8. Third sedimentation space; 9. Support frame; 10. Motor; 11. Collection tank; 12. Sleeve rod; 13. Jet pipe; 14. Rotating shaft; 15. Support bar; 16. Stirring blade; 17. Fixed plate; 18. Connecting pipe; 19. Support ring; 20. Connecting column; 21. Piston rod; 22. Air inlet pipe; 23. Cam; 24. Spring; 25. Sliding ring; 26. Support plate; 27. Insertion hole; 28. Connecting frame; 29. ​​Groove; 30. Nut ring; 31. Insertion pipe; 32. Annular groove; 33. Guide plate. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] Example 1

[0037] Reference Figures 1-7 A wastewater treatment device includes: a tank 1, with an inlet pipe 2 on one side for introducing wastewater to be treated, and a drain pipe 3 on the other side for discharging treated wastewater. Inside the tank 1, the space is divided into three parts by two partitions 5 with gradually changing heights: a first sedimentation space 6, a second sedimentation space 7, and a third sedimentation space 8, to facilitate the step-by-step treatment and sedimentation of wastewater.

[0038] Within the first sedimentation space 6, a separation mechanism is installed to separate grease from the wastewater. Specifically, the separation mechanism includes a support frame 9, which is fixed to the top of the housing 1 and connected to a support ring 19 via two connecting columns 20. Multiple evenly distributed sleeves 12 are fixed to the top of the support ring 19, and a piston rod 21 slides within each sleeve 12. One end of each sleeve 12 is connected to a jet pipe 13, the bottom end of which extends into the first sedimentation space 6 and has multiple exhaust holes on its outer wall. The other end of each sleeve 12 is connected to an air inlet pipe 22. Both the air inlet pipe 22 and the jet pipe 13 are equipped with one-way valves to ensure that the gas flows in only one direction. To drive the piston rod 21 to reciprocate within the sleeve 12, a driving component is also provided on the support frame 9. This driving component includes a rotating shaft 14 that rotatably extends through the top of the support frame 9, located between the multiple piston rods 21, and a cam 23 that cooperates with the piston rod 21 is fixedly fitted onto its outer wall. In addition, a motor 10 is fixed to the top of the support frame 9, and the output end of the motor 10 is fixedly connected to the top end of the rotating shaft 14. A spring 24 is also provided inside the sleeve rod 12, and the two ends of the spring 24 are fixedly connected to one side of the inner wall of the sleeve rod 12 and one end of the piston rod 21, respectively, for resetting the piston rod 21 after the cam 23 rotates.

[0039] When the motor 10 starts, it drives the rotating shaft 14 and cam 23 to rotate, thereby pushing the piston rod 21 to reciprocate within the sleeve 12. When the piston rod 21 moves forward, it compresses the gas inside the sleeve 12, causing the gas to be injected into the wastewater in the first sedimentation space 6 through the jet pipe 13 and the exhaust port, forming tiny bubbles. These bubbles attach to the oil particles in the wastewater and carry them to the surface as the bubbles rise.

[0040] To collect the separated grease and impurities, a collection mechanism is also provided in the first sedimentation space 6. The collection mechanism includes a sliding ring 25 that is slidably fitted onto the outer wall of the rotating shaft 14. Multiple connecting frames 28 are fixed to the outer wall of the sliding ring 25, and each connecting frame 28 contains a detachable collection bucket 11 for collecting grease and impurities. A guide plate 33 is also fixed to one side of the connecting frame 28 to guide the grease and impurities, making it easier for them to fall into the collection bucket 11. An axial sliding seal structure is provided between the sliding ring 25 and the rotating shaft 14.

[0041] This application can be used in the field of wastewater treatment, or in other fields applicable to this application.

[0042] Example 2

[0043] refer to Figures 1-7Based on Example 1, an improvement is made to a wastewater treatment device for polyamide 66 fiber production, which is applied to the field of wastewater treatment. In order to facilitate the installation and disassembly of the collection bucket 11, a groove 29 adapted to the collection bucket 11 is provided in the connecting frame 28. A nut ring 30 is threaded on the top of the sliding ring 25. The bottom end of the nut ring 30 abuts against multiple collection buckets 11, thereby fixing the collection bucket 11 in the connecting frame 28.

[0044] In addition, a support plate 26 is fixedly fitted onto the outer wall of the sliding ring 25. An annular groove 32 is formed inside the support plate 26, and an insertion hole 27 corresponding to the collection bucket 11 is formed at the top of the support plate 26. The bottom end of the insertion hole 27 communicates with the annular groove 32. A tube 31 is inserted into the insertion hole 27 and is fixedly installed at the bottom of the collection bucket 11. Thus, when the collection bucket 11 is full of grease and impurities, the grease and impurities can be discharged into the annular groove 32 through the tube 31.

[0045] To discharge grease and impurities from the annular groove 32, a connecting pipe 18 is wound around the bottom end of the rotating shaft 14. The rotating shaft 14 is hollow, and the bottom end of the connecting pipe 18 is connected to the rotating shaft 14, while the top end is connected to the annular groove 32. A support bar 15 is also fixed in the first sedimentation space 6, through which the rotating shaft 14 is rotatably mounted. A stirring blade 16 is fixedly fitted at the bottom end of the shaft 14 to stir the wastewater during rotation, thereby improving the grease separation efficiency. Simultaneously, a fixing disc 17 is fixedly fitted on the outer wall of the rotating shaft 14 to support the connecting pipe 18, ensuring the stability and durability of the connecting pipe 18.

[0046] Finally, a drain pipe 4 is provided on one side of the housing 1. The top end of the drain pipe 4 is connected to the rotating shaft 14 for discharging the collected grease and impurities. When the grease and impurities in the collection tank 11 or the annular trough 32 accumulate to a certain extent, the valve of the drain pipe 4 can be opened to discharge the grease and impurities out of the device for treatment.

[0047] First, wastewater enters the first sedimentation space 6 through the inlet pipe 2. At the same time, the motor 10 is started to drive the rotating shaft 14 to rotate. During the rotation of the rotating shaft 14, the cam 23 can be driven to rotate. When the cam 23 contacts the piston rod 21, it can push the piston rod 21 to move into the sleeve rod 12, so that the air in the sleeve rod 12 is discharged into the wastewater through the jet pipe 13. The air bubbles drive the grease and particulate impurities to float upward. During the rotation of the rotating shaft 14, the stirring blade 16 can also be driven to rotate, stirring the wastewater and accelerating the floating of grease and impurities. When the cam 23 moves away from the piston rod 21, the piston rod 21 can be reset and moved under the force of the spring 24, and air is sent into the sleeve rod 12 through the air inlet pipe 22.

[0048] Secondly, the collection bucket 11 can float as the water level rises. When the collection bucket 11 moves upward, it can drive the sliding ring 25 to move upward through the nut ring 30, and drive the top of the connecting pipe 18 to move upward. When the rotating shaft 14 rotates, it can drive the cam 23 to rotate. The rotation of the cam 23 can drive the connecting frame 28 to rotate. The rotation of the connecting frame 28 can drive the collection bucket 11 to rotate. During the rotation, grease and impurities can move into the collection bucket 11 through the guide plate 33.

[0049] Then, the collected grease can be discharged into the annular groove 32 through the insertion tube 31, and into the bottom end of the rotating shaft 14 through the connecting tube 18, and finally discharged through the drain pipe 4, while impurities remain in the collection bucket 11.

[0050] Finally, rotate the nut ring 30 to disengage it from the sliding ring 25, and then remove the collection bucket 11 from the connecting frame 28 for cleaning. The wastewater after oil-water separation is then settled in the second sedimentation space 7 and the third sedimentation space 8, and discharged through the drain pipe 3.

[0051] However, as is well known to those skilled in the art, the working principle and wiring method of the motor 10 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0052] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A wastewater treatment device for polyamide 66 fiber production, characterized in that, Includes a box body (1), with a water inlet pipe (2) running through one side of the box body (1) and a drain pipe (3) running through the other side of the box body (1). Two partitions (5) with gradually changing heights are fixed inside the box body (1) to divide the inside of the box body (1) into a first sedimentation space (6), a second sedimentation space (7) and a third sedimentation space (8). The separation mechanism is set in the first sedimentation space (6) and is used to separate the oil and grease in the wastewater in the first sedimentation space (6); The collection mechanism is set in the first sedimentation space (6) and used in conjunction with the separation mechanism to collect the separated oil and impurities; A drain pipe (4) is connected to one side of the box (1), and the top end of the drain pipe (4) is connected to the collection mechanism for discharging the collected grease.

2. The wastewater treatment device for polyamide 66 fiber production according to claim 1, characterized in that, The separation mechanism includes a support frame (9) fixedly mounted on the top of the housing (1). The bottom of the support frame (9) is fixedly connected to a support ring (19) via two connecting columns (20). The top of the support ring (19) is fixedly provided with multiple evenly distributed sleeve rods (12). One end of the sleeve rod (12) is slidably provided with a piston rod (21). The other end of the sleeve rod (12) is connected to a jet pipe (13). The bottom end of the jet pipe (13) extends into the first sedimentation space (6). Multiple exhaust holes are provided on its outer wall. An air intake pipe (22) for air intake is connected to the outer wall of the sleeve rod (12). One-way valves are provided on both the air intake pipe (22) and the jet pipe (13). A driving component is provided on the support frame (9) for driving the piston rod (21) to reciprocate within the sleeve rod (12).

3. The wastewater treatment device for polyamide 66 fiber production according to claim 2, characterized in that, The driving component includes a rotating shaft (14) that is rotatably mounted on the top of the support frame (9). The rotating shaft (14) is located between a plurality of piston rods (21). A cam (23) that cooperates with the piston rod (21) is fixedly sleeved on the outer wall of the rotating shaft (14). A motor (10) is fixedly mounted on the top of the support frame (9). The output end of the motor (10) is fixedly connected to the top end of the rotating shaft (14). A spring (24) is provided inside the sleeve rod (12). The two ends of the spring (24) are fixedly connected to one side of the inner wall of the sleeve rod (12) and one end of the piston rod (21), respectively.

4. The wastewater treatment device for polyamide 66 fiber production according to claim 3, characterized in that, The collection mechanism includes a sliding ring (25) that is slidably sleeved on the outer wall of the rotating shaft (14). The outer wall of the sliding ring (25) is fixedly provided with a plurality of connecting frames (28). The connecting frames (28) are detachably provided with a collection bucket (11) for collecting grease impurities. A guide plate (33) for guiding grease impurities is fixedly provided on one side of the connecting frames (28).

5. The wastewater treatment device for polyamide 66 fiber production according to claim 4, characterized in that, The connecting frame (28) has a groove (29) that is compatible with the collection bucket (11). The top of the sliding ring (25) is threaded with a nut ring (30), and the bottom of the nut ring (30) abuts against the multiple collection buckets (11).

6. The wastewater treatment device for polyamide 66 fiber production according to claim 4, characterized in that, The outer wall of the sliding ring (25) is fixedly fitted with a support plate (26). The support plate (26) has an annular groove (32) inside. The top of the support plate (26) has an insertion hole (27) corresponding to the collection bucket (11). The bottom end of the insertion hole (27) is connected to the annular groove (32). An insertion tube (31) is inserted into the insertion hole (27). The insertion tube (31) is fixedly installed at the bottom of the collection bucket (11). The bottom end of the rotating shaft (14) is wrapped with a connecting tube (18). The bottom end of the connecting tube (18) is connected to the rotating shaft (14). The top end of the connecting tube (18) is connected to the annular groove (32).

7. A wastewater treatment device for polyamide 66 fiber production according to claim 6, characterized in that, A support bar (15) is fixedly provided in the first sedimentation space (6), and the rotating shaft (14) is rotatably mounted on the support bar (15). A stirring blade (16) is fixedly sleeved at the bottom end of the rotating shaft (14), and a fixed plate (17) for supporting the connecting pipe (18) is fixedly sleeved on the outer wall of the rotating shaft (14).

8. The method of using the wastewater treatment device for polyamide 66 fiber production according to any one of claims 1-7, characterized in that, Includes the following steps: S1. First, the wastewater enters the first sedimentation space (6) through the inlet pipe (2). At the same time, the motor (10) is started to drive the rotating shaft (14) to rotate. During the rotation of the rotating shaft (14), the piston rod (21) is moved to send air into the wastewater. The air bubbles are used to drive the grease and particulate impurities to float upward. S2. Secondly, the collection bucket (11) can float as the water level rises, and the rotating shaft (14) can drive the collection bucket (11) to rotate to collect floating grease and particles when it rotates. S3. Then, the collected grease can be discharged through the connecting pipe (18) and the drain pipe (4), while the impurities remain in the collection bucket (11). S4. Finally, the collection bucket (11) is removed from the connecting frame (28) for cleaning, and the wastewater after oil-water separation is successively settled through the second sedimentation space (7) and the third sedimentation space (8), and discharged through the drain pipe (3).

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