A low-temperature treatment system for nylon ATY oil wastewater and its working method

Abstract

The present invention belongs to the technical field of low-temperature treatment systems for wastewater, and discloses a low-temperature treatment system for nylon ATY oil wastewater and a working method thereof. The system comprises a treatment device, a protective door hinged on one side of the treatment device, a treatment tank installed inside the treatment device, a liquid inlet pipe fixedly connected to the bottom end of the treatment tank, a connecting pipe fixedly installed on the top end of the treatment tank, a cooling tank fixedly installed on the end of the connecting pipe away from the treatment tank, the cooling tank is arranged on one side of the treatment tank, and a first liquid drain component and a second liquid drain component are installed inside the cooling tank; when the steam inside the cooling tank is condensed, it can be filtered through a filter screen first, and then stored in the bottom of the cooling tank for precipitation, thereby avoiding the presence of a part of impurities in the condensed water after the nylon ATY oil wastewater evaporates at low temperature, and directly discharging the condensed water with impurities from the equipment will affect the treatment effect of the equipment on the nylon ATY oil wastewater, thereby improving the treatment effect of the equipment on the nylon ATY oil wastewater.

Description

Technical Field

[0001] The invention belongs to the technical field of low-temperature wastewater treatment systems, and in particular relates to a low-temperature treatment system for nylon ATY oil wastewater and a working method thereof. Background Art

[0002] Nylon ATY oil wastewater is an industrial wastewater containing a variety of organic pollutants, mainly from the production process of nylon fiber. The pollutants in this wastewater include nylon polymer monomers, additives, oils and other organic compounds, such as amines, esters, ethers and phenols. Since these pollutants have high biological toxicity and chemical stability, nylon ATY oil wastewater poses a great threat to the environment and ecology.

[0003] The main purpose of wastewater treatment is to reduce the content of harmful substances in wastewater so that it meets national or local emission standards and reduces harm to the environment. There are many methods to treat nylon ATY oil wastewater, including physical, chemical and biological methods. According to the characteristics of the wastewater and treatment requirements, different treatment methods can be selected or a combination of multiple methods can be used to achieve the best treatment effect.

[0004] At present, when nylon ATY oil agent wastewater is treated at low temperature, the wastewater needs to be evaporated at low temperature first, then the water vapor is condensed, and finally the condensed water is discharged to complete the treatment. However, since there are still some impurities in the condensed water after the low-temperature evaporation of the nylon ATY oil agent wastewater, including incompletely evaporated oil, salt, heavy metals and other organic or inorganic impurities, directly discharging the condensed water with impurities from the equipment will affect the equipment's treatment effect on the nylon ATY oil agent wastewater, resulting in poor treatment effect. Summary of the Invention

[0005] The object of the present invention is to provide a low-temperature treatment system for nylon ATY oil wastewater and a working method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a low-temperature treatment system for nylon ATY oil wastewater, comprising a treatment device, a protective door hingedly connected to one side of the treatment device, a treatment tank installed inside the treatment device, a liquid inlet pipe fixedly connected to the bottom end of the treatment tank, a connecting pipe fixedly installed on the top end of the treatment tank, a cooling tank fixedly installed on one end of the connecting pipe away from the treatment tank, the cooling tank being arranged on one side of the treatment tank, and a first drain assembly and a second drain assembly installed inside the cooling tank;

[0007] A delivery pipe is installed inside the cooling tank, both ends of the delivery pipe pass through the inner wall of the cooling tank and extend to one side of the cooling tank, a circulating pump is installed on the outer wall of the delivery pipe, a refrigerant storage tank is provided above the circulating pump, and the circulating pump and the refrigerant storage tank are both installed inside the processing tank;

[0008] A filter is installed inside the cooling tank, and a cleaning component is provided on the outer wall of the filter.

[0009] As a further technical solution of the present invention, the first drainage assembly includes a first drainage pipe fixedly installed on one side of the cooling tank, a first ball valve is rotatably installed inside the first drainage pipe, a first connecting rod is fixedly installed on the top of the first ball valve, a first gear is fixedly installed on the top of the first connecting rod, one side of the first gear is meshed and connected with a first rack plate, one end of the first rack plate is fixedly installed with a first protrusion, the first protrusion is slidably installed inside the limit plate, the limit plate is fixedly installed inside the cooling tank, the limit rod is slidably installed inside the limit plate, a moving rod is fixedly installed on one side of the limit rod, and the bottom end of the limit rod is fixedly connected to a floating plate.

[0010] As a further technical solution of the present invention, the floating plate is arranged inside the cooling tank, and both sides of the floating plate are arranged obliquely.

[0011] As a further technical solution of the present invention, the second drainage assembly includes a second drainage pipe fixedly installed on one side of the cooling tank, a second ball valve is rotatably installed inside the second drainage pipe, a third connecting rod is fixedly installed on the top of the second ball valve, and the third connecting rod is fixedly installed on the bottom end of the first ball valve.

[0012] As a further technical solution of the present invention, the bottom of the cooling tank is inclined.

[0013] As a further technical solution of the present invention, the second liquid drain pipe is arranged below the first liquid drain pipe, and the second liquid drain pipe is arranged at the bottom of the cooling tank.

[0014] As a further technical solution of the present invention, a second gear is fixedly installed on the outer wall of the third connecting rod, a second rack plate is meshed and connected to one side of the second gear, a second protrusion is fixedly installed on one end of the second rack plate, and the second protrusion is slidably installed inside the cooling tank.

[0015] As a further technical solution of the present invention, one end of the second rack plate is fixedly connected to a push plate, and the push plate is arranged on one side of the cooling tank.

[0016] As a further technical solution of the present invention, the cleaning component includes a brush plate arranged on the outer wall of the filter, the bottom end of the brush plate is fixedly installed with bristles, the brush plate is fixedly installed on the outer wall of the second connecting rod, the second connecting rod is rotatably installed on the inner wall of the filter, the inner wall of the second connecting rod is slidably installed with a fixed rod, the fixed rod is fixedly installed on the top of the floating plate, the inner wall of the fixed rod is provided with a sliding groove and a spiral groove, the inner wall of the spiral groove is embedded with a slider, and the slider is fixedly installed on the inner wall of the second connecting rod.

[0017] A working method of a low-temperature treatment system for nylon ATY oil wastewater comprises the following steps:

[0018] S1: When nylon ATY oil wastewater needs to be treated at low temperature, the wastewater is first discharged into the treatment tank through the liquid inlet pipe, and then the wastewater is evaporated at low temperature in the treatment tank. The steam is then discharged into the cooling tank through the connecting pipe for condensation. Finally, the condensed water is filtered through the filter and stored at the bottom of the cooling tank for precipitation.

[0019] S2: As more and more condensed water accumulates inside the cooling tank, the floating plate moves upward, and the movement of the floating plate drives the movement of the limit rod, and the movement of the limit rod drives the movement of the moving rod. When the moving rod contacts the first protrusion, the movement of the moving rod drives the first protrusion to slide inside the limit plate, and the movement of the first protrusion drives the movement of the first rack plate, and the movement of the first rack plate drives the rotation of the first gear, and the rotation of the first gear drives the rotation of the first connecting rod, and the rotation of the first connecting rod drives the rotation of the first ball valve, and the rotation of the first ball valve discharges the condensed water inside the cooling tank from the first drain pipe;

[0020] S3: The rotation of the first ball valve drives the rotation of the third connecting rod, and the rotation of the third connecting rod drives the rotation of the second ball valve to discharge the condensed water from the second drain pipe;

[0021] S4: The movement of the floating plate drives the movement of the fixed rod, causing the fixed rod to slide inside the second connecting rod. When the spiral groove slides to the outer wall of the slider, the second connecting rod rotates. The rotation of the second connecting rod drives the brush plate and the bristles to rotate, cleaning the outer wall of the filter screen.

[0022] S5: When the condensed water inside the cooling tank is discharged, the float plate moves to the bottom of the cooling tank. Similarly, the movement of the float plate drives the movement of the moving rod. When the moving rod moves to one end of the second protrusion, the movement of the moving rod drives the second protrusion to move inside the cooling tank. The movement of the second protrusion drives the movement of the second rack plate. The movement of the second rack plate drives the rotation of the second gear. The rotation of the second gear drives the rotation of the third connecting rod. The rotation of the third connecting rod drives the rotation of the second ball valve and the first ball valve, closing the first drain pipe and the second drain pipe to stop the discharge of condensed water and continue to precipitate the condensed water.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. The present invention provides a filter screen. When the steam inside the cooling tank is condensed, it can be filtered through the filter screen first and then stored at the bottom of the cooling tank for precipitation. This avoids the presence of some impurities in the condensed water after the nylon ATY oil wastewater evaporates at low temperature, including incompletely evaporated oil, salt, heavy metals and other organic or inorganic impurities. Directly discharging the condensed water with impurities from the equipment will affect the treatment effect of the equipment on the nylon ATY oil wastewater, resulting in poor treatment effect. The treatment effect of the equipment on the nylon ATY oil wastewater is improved.

[0025] 2. The present invention is provided with a first drainage component. When condensed water is collected at the bottom of the cooling tank, as more and more condensed water is collected, the floating plate moves upward in the interior of the cooling tank. The movement of the floating plate drives the movement of the limit rod, and the movement of the limit rod drives the movement of the moving rod. When the moving rod moves to the bottom end of the first protrusion, the moving rod continues to move and drives the first protrusion to move in the interior of the limit plate. The movement of the first protrusion drives the movement of the first rack plate. The movement of the first rack plate drives the rotation of the first gear. The rotation of the first gear drives the rotation of the first connecting rod. The rotation of the first connecting rod drives the rotation of the first ball valve, so that the condensed water inside the cooling tank is discharged from the interior of the first drain pipe through the first ball valve.

[0026] 3. The present invention provides a cleaning component, and both ends of the spiral groove are fixedly connected with a slide groove. When the floating plate moves, the movement of the floating plate drives the movement of the fixed rod, and the fixed rod slides inside the second connecting rod. When the spiral groove moves to the outer wall of the slider, it drives the slider to rotate, and the rotation of the slider drives the rotation of the second connecting rod. The rotation of the second connecting rod drives the rotation of the brush plate, and the rotation of the brush plate drives the rotation of the bristles to rotate and clean the surface of the filter screen, avoiding the problem of reduced filtering effect after the filter screen has been used for a period of time, ensuring the filtering effect of the filter screen, and thereby improving the treatment effect of the equipment on nylon ATY oil wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0029] Figure 3 This is a schematic cross-sectional view of the structure of the processing equipment of the present invention;

[0030] Figure 4 This is a schematic cross-sectional view of the cooling tank structure of the present invention;

[0031] Figure 5Schematic diagram of the cross-section structure of the filter screen of the present invention;

[0032] Figure 6 For the present invention Figure 3 A schematic diagram of the structure at center A;

[0033] Figure 7 For the present invention Figure 4 A magnified schematic diagram of the structure at point B in the middle;

[0034] Figure 8 For the present invention Figure 5 A magnified schematic diagram of the structure at point C in the middle;

[0035] Figure 9 For the present invention Figure 5 Enlarged schematic diagram of the structure at point D in the middle.

[0036] In the figure: 1. processing equipment; 2. protective door; 3. processing tank; 4. liquid inlet pipe; 5. connecting pipe; 6. cooling tank; 7. delivery pipe; 8. circulating pump; 9. refrigerant storage tank; 10. first discharge pipe; 11. second discharge pipe; 12. filter; 13. floating plate; 14. limiting rod; 15. moving rod; 16. limiting plate; 17. first protrusion; 18. first rack plate; 19. first gear; 20. first connecting rod; 21. first ball valve; 22. second protrusion; 23. second rack plate; 24. push plate; 25. fixing rod; 26. spiral groove; 27. slider; 28. second connecting rod; 29. ​​brush plate; 30. bristles; 31. slide groove; 32. second ball valve; 33. third connecting rod; 34. second gear. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] Example 1

[0039] like Figures 1 to 9 As shown, in an embodiment of the present invention, a low-temperature treatment system for nylon ATY oil wastewater includes a treatment device 1, a protective door 2 is hingedly connected to one side of the treatment device 1, a treatment tank 3 is installed inside the treatment device 1, a liquid inlet pipe 4 is fixedly connected to the bottom end of the treatment tank 3, a connecting pipe 5 is fixedly installed on the top end of the treatment tank 3, a cooling tank 6 is fixedly installed on the end of the connecting pipe 5 away from the treatment tank 3, the cooling tank 6 is arranged on one side of the treatment tank 3, and a first drain assembly and a second drain assembly are installed inside the cooling tank 6;

[0040] A delivery pipe 7 is installed inside the cooling tank 6. Both ends of the delivery pipe 7 pass through the inner wall of the cooling tank 6 and extend to one side of the cooling tank 6. A circulating pump 8 is installed on the outer wall of the delivery pipe 7. A refrigerant storage tank 9 is provided above the circulating pump 8. The circulating pump 8 and the refrigerant storage tank 9 are both installed inside the processing tank 3.

[0041] A filter screen 12 is installed inside the cooling tank 6 , and a cleaning component is provided on the outer wall of the filter screen 12 .

[0042] When nylon ATY oil wastewater needs to be treated at low temperature, the wastewater is first discharged into the treatment tank 3 through the liquid inlet pipe 4, and the wastewater is evaporated at low temperature in the treatment tank 3. The steam is discharged into the cooling tank 6 through the connecting pipe 5 for condensation. The condensed water is filtered through the filter 12 and stored at the bottom of the cooling tank 6.

[0043] The interior of the treatment tank 3 is subjected to low-temperature evaporation by the refrigerant, and the interior of the cooling tank 6 is subjected to condensation of the vapor by the refrigerant;

[0044] By setting the filter 12, when the steam inside the cooling tank 6 is condensed, it can be filtered through the filter 12 first, and then stored at the bottom of the cooling tank 6 for precipitation, thereby avoiding the presence of some impurities in the condensed water after the nylon ATY oil wastewater evaporates at low temperature, including incompletely evaporated oil, salt, heavy metals and other organic or inorganic impurities. Directly discharging the condensed water with impurities from the equipment will affect the treatment effect of the equipment on the nylon ATY oil wastewater, resulting in poor treatment effect, thereby improving the treatment effect of the equipment on the nylon ATY oil wastewater.

[0045] like Figures 1 to 9 As shown, the first drainage assembly includes a first drainage pipe 10 fixedly mounted on one side of the cooling tank 6, a first ball valve 21 is rotatably mounted inside the first drainage pipe 10, a first connecting rod 20 is fixedly mounted on the top of the first ball valve 21, a first gear 19 is fixedly mounted on the top of the first connecting rod 20, one side of the first gear 19 is meshedly connected with a first rack plate 18, one end of the first rack plate 18 is fixedly mounted with a first protrusion 17, the first protrusion 17 is slidably mounted on the inside of the limit plate 16, the limit plate 16 is fixedly mounted on the inside of the cooling tank 6, a limit rod 14 is slidably mounted on the inside of the limit plate 16, a moving rod 15 is fixedly mounted on one side of the limit rod 14, and the bottom end of the limit rod 14 is fixedly connected to the floating plate 13.

[0046] Through the setting of the first drainage assembly, when condensed water is collected at the bottom of the cooling tank 6, as more and more condensed water is collected, the float plate 13 moves upward in the interior of the cooling tank 6, and the movement of the float plate 13 drives the movement of the limit rod 14, and the movement of the limit rod 14 drives the movement of the moving rod 15. When the moving rod 15 moves to the bottom end of the first protrusion 17, the moving rod 15 continues to move and drives the first protrusion 17 to move in the interior of the limit plate 16. The movement of the first protrusion 17 drives the movement of the first rack plate 18. The movement of the first rack plate 18 drives the rotation of the first gear 19. The rotation of the first gear 19 drives the rotation of the first connecting rod 20. The rotation of the first connecting rod 20 drives the rotation of the first ball valve 21, so that the condensed water inside the cooling tank 6 is discharged from the interior of the first drain pipe 10 through the first ball valve 21.

[0047] By the limiting rod 14 moving inside the limiting plate 16 , the position of the floating plate 13 can be limited.

[0048] like Figure 4 and Figure 5 As shown, the floating plate 13 is arranged inside the cooling tank 6, and both sides of the floating plate 13 are inclined.

[0049] The two sides of the float 13 are inclined. When the condensed water falls downward, it can be diverted by the float 13, so that the condensed water can be discharged into the bottom of the cooling tank 6 through the float 13; and the speed at which the condensed water falls downward can be slowed down to prevent the condensed water from shaking when falling, affecting the sedimentation effect of the condensed water at the bottom of the cooling tank 6, thereby ensuring the sedimentation effect of the condensed water at the bottom of the cooling tank 6, and thereby improving the treatment effect of the equipment on nylon ATY oil wastewater.

[0050] The floating plate 13 is configured to be light in weight and large in volume, and its density is less than that of water, so that the floating plate 13 can float on the surface of the condensed water.

[0051] like Figures 1 to 9 As shown, the second drainage assembly includes a second drainage pipe 11 fixedly installed on one side of the cooling tank 6, a second ball valve 32 is rotatably installed inside the second drainage pipe 11, a third connecting rod 33 is fixedly installed on the top of the second ball valve 32, and the third connecting rod 33 is fixedly installed on the bottom end of the first ball valve 21.

[0052] Through the setting of the second drainage assembly, when the first ball valve 21 rotates, the rotation of the first ball valve 21 drives the rotation of the third connecting rod 33, and the rotation of the third connecting rod 33 drives the rotation of the second ball valve 32, so that the condensed water inside the cooling tank 6 is discharged from the inside of the second drainage pipe 11 through the chute 31.

[0053] like Figure 5 As shown, the bottom of the cooling tank 6 is arranged tilted.

[0054] The bottom of the cooling tank 6 is tilted toward one side of the second drain pipe 11 so that the condensed water at the bottom of the cooling tank 6 flows toward one side of the second drain pipe 11 for easy discharge.

[0055] like Figures 1 to 5 As shown, the second drain pipe 11 is arranged below the first drain pipe 10 , and the second drain pipe 11 is arranged at the bottom of the cooling tank 6 .

[0056] After the condensed water is filtered through the filter screen 12, it is precipitated at the bottom of the cooling tank 6. Finally, the clear liquid at the top of the precipitated condensed water is discharged through the first drain pipe 10, and the turbid liquid at the bottom is discharged through the second drain pipe 11. The two are discharged separately to facilitate separate treatment, further improving the treatment effect of the equipment on nylon ATY oil wastewater.

[0057] like Figures 1 to 9 As shown, a second gear 34 is fixedly mounted on the outer wall of the third connecting rod 33, one side of the second gear 34 is meshedly connected with a second rack plate 23, one end of the second rack plate 23 is fixedly mounted with a second protrusion 22, and the second protrusion 22 is slidably mounted inside the cooling tank 6.

[0058] After the condensed water inside the cooling tank 6 is discharged, the float plate 13 moves to the bottom of the cooling tank 6. Similarly, the movement of the float plate 13 drives the movement of the moving rod 15. When the moving rod 15 moves to one end of the second protrusion 22, the movement of the moving rod 15 drives the second protrusion 22 to move inside the cooling tank 6. The movement of the second protrusion 22 drives the movement of the second rack plate 23. The movement of the second rack plate 23 drives the rotation of the second gear 34. The rotation of the second gear 34 drives the rotation of the third connecting rod 33. The rotation of the third connecting rod 33 drives the rotation of the second ball valve 32 and the first ball valve 21, closing the first drain pipe 10 and the second drain pipe 11, stopping the discharge of condensed water, and continuing to precipitate the condensed water.

[0059] like Figures 1 to 9 As shown, one end of the second rack plate 23 is fixedly connected to a push plate 24 , and the push plate 24 is arranged on one side of the cooling tank 6 .

[0060] When the first ball valve 21 and the second ball valve 32 are in the closed state, the push plate 24 is away from the cooling tank 6, and the staff can manually push the push plate 24 to one side of the cooling tank 6. Similarly, the movement of the push plate 24 drives the movement of the second rack plate 23, and the movement of the second rack plate 23 drives the second gear 34 to rotate. The rotation of the second gear 34 drives the second ball valve 32 and the first ball valve 21 to rotate, so that the condensed water inside the cooling tank 6 is discharged. When the condensed water does not reach a certain amount to be automatically discharged, it can be discharged manually by the staff, thereby improving the stability of the drainage.

[0061] Example 2

[0062] like Figures 1 to 9 As shown, in an embodiment of the present invention, the cleaning component includes a brush plate 29 arranged on the outer wall of the filter 12, and the bottom end of the brush plate 29 is fixedly installed with bristles 30, the brush plate 29 is fixedly installed on the outer wall of the second connecting rod 28, the second connecting rod 28 is rotatably installed on the inner wall of the filter 12, and the inner wall of the second connecting rod 28 is slidably installed with a fixed rod 25, the fixed rod 25 is fixedly installed on the top of the floating plate 13, the inner wall of the fixed rod 25 is provided with a slide groove 31 and a spiral groove 26, the inner wall of the spiral groove 26 is embedded with a slider 27, and the slider 27 is fixedly installed on the inner wall of the second connecting rod 28.

[0063] Through the setting of the cleaning component, both ends of the spiral groove 26 are fixedly connected with a slide groove 31. When the floating plate 13 moves, the movement of the floating plate 13 drives the movement of the fixed rod 25, and the fixed rod 25 slides inside the second connecting rod 28. When the spiral groove 26 moves to the outer wall of the slider 27, it drives the slider 27 to rotate. The rotation of the slider 27 drives the rotation of the second connecting rod 28. The rotation of the second connecting rod 28 drives the rotation of the brush plate 29. The rotation of the brush plate 29 drives the rotation of the bristles 30, and the surface of the filter screen 12 is rotated and cleaned, avoiding the problem of reduced filtering effect of the filter screen 12 after using it for a period of time, ensuring the filtering effect of the filter screen 12, and thereby improving the treatment effect of the equipment on nylon ATY oil wastewater.

[0064] By moving the fixing rod 25 inside the second connecting rod 28 , the position of the floating plate 13 can be limited, thereby improving the stability of the floating plate 13 during movement.

[0065] A working method of a low-temperature treatment system for nylon ATY oil wastewater comprises the following steps:

[0066] S1: When nylon ATY oil wastewater needs to be treated at low temperature, the wastewater is first discharged into the treatment tank 3 through the liquid inlet pipe 4, and then the wastewater is evaporated at low temperature in the treatment tank 3. The steam is then discharged into the cooling tank 6 through the connecting pipe 5 for condensation. Finally, the condensed water is filtered through the filter screen 12 and stored at the bottom of the cooling tank 6 for precipitation.

[0067] S2: As more and more condensed water accumulates inside the cooling tank 6, the floating plate 13 moves upward, and the movement of the floating plate 13 drives the movement of the limiting rod 14, and the movement of the limiting rod 14 drives the movement of the moving rod 15. When the moving rod 15 contacts the first protrusion 17, the movement of the moving rod 15 drives the first protrusion 17 to slide inside the limiting plate 16. The movement of the first protrusion 17 drives the movement of the first rack plate 18. The movement of the first rack plate 18 drives the rotation of the first gear 19. The rotation of the first gear 19 drives the rotation of the first connecting rod 20. The rotation of the first connecting rod 20 drives the rotation of the first ball valve 21. The rotation of the first ball valve 21 discharges the condensed water inside the cooling tank 6 from the first drain pipe 10.

[0068] S3: The rotation of the first ball valve 21 drives the rotation of the third connecting rod 33, and the rotation of the third connecting rod 33 drives the rotation of the second ball valve 32, thereby discharging the condensed water from the second drain pipe 11;

[0069] S4: The movement of the floating plate 13 drives the movement of the fixed rod 25, causing the fixed rod 25 to slide inside the second connecting rod 28. When the spiral groove 26 slides to the outer wall of the slider 27, the second connecting rod 28 rotates. The rotation of the second connecting rod 28 drives the brush plate 29 and the bristles 30 to rotate, cleaning the outer wall of the filter 12.

[0070] S5: After the condensed water inside the cooling tank 6 is discharged, the float plate 13 moves to the bottom of the cooling tank 6. Similarly, the movement of the float plate 13 drives the movement of the moving rod 15. When the moving rod 15 moves to one end of the second protrusion 22, the movement of the moving rod 15 drives the second protrusion 22 to move inside the cooling tank 6. The movement of the second protrusion 22 drives the movement of the second rack plate 23. The movement of the second rack plate 23 drives the rotation of the second gear 34. The rotation of the second gear 34 drives the rotation of the third connecting rod 33. The rotation of the third connecting rod 33 drives the rotation of the second ball valve 32 and the first ball valve 21, closing the first drain pipe 10 and the second drain pipe 11, stopping the discharge of condensed water, and continuing to precipitate the condensed water.

[0071] Working principle and usage process:

[0072] When nylon ATY oil wastewater needs to be treated at low temperature, the wastewater is first discharged into the treatment tank 3 through the liquid inlet pipe 4, and then the wastewater is evaporated at low temperature through the treatment tank 3. Then the steam is discharged into the cooling tank 6 through the connecting pipe 5 for condensation. Finally, the condensed water is filtered through the filter screen 12 and stored at the bottom of the cooling tank 6 for precipitation.

[0073] As more and more condensed water accumulates inside the cooling tank 6, the floating plate 13 moves upward, and the movement of the floating plate 13 drives the movement of the limiting rod 14, and the movement of the limiting rod 14 drives the movement of the moving rod 15. When the moving rod 15 contacts the first protrusion 17, the movement of the moving rod 15 drives the first protrusion 17 to slide inside the limiting plate 16. The movement of the first protrusion 17 drives the movement of the first rack plate 18. The movement of the first rack plate 18 drives the rotation of the first gear 19. The rotation of the first gear 19 drives the rotation of the first connecting rod 20. The rotation of the first connecting rod 20 drives the rotation of the first ball valve 21. The rotation of the first ball valve 21 discharges the condensed water inside the cooling tank 6 from the first drain pipe 10.

[0074] At the same time, the rotation of the first ball valve 21 drives the rotation of the third connecting rod 33, and the rotation of the third connecting rod 33 drives the rotation of the second ball valve 32, thereby discharging the condensed water from the second drain pipe 11;

[0075] At the same time, the movement of the floating plate 13 drives the movement of the fixed rod 25, causing the fixed rod 25 to slide inside the second connecting rod 28. When the spiral groove 26 slides to the outer wall of the slider 27, the second connecting rod 28 rotates. The rotation of the second connecting rod 28 drives the brush plate 29 and the bristles 30 to rotate, thereby cleaning the outer wall of the filter screen 12.

[0076] When the condensed water inside the cooling tank 6 is discharged, the float 13 moves to the bottom of the cooling tank 6. Similarly, the movement of the float 13 drives the movement of the moving rod 15. When the moving rod 15 moves to one end of the second protrusion 22, the movement of the moving rod 15 drives the second protrusion 22 to move inside the cooling tank 6. The movement of the second protrusion 22 drives the movement of the second rack plate 23. The movement of the second rack plate 23 drives the rotation of the second gear 34. The rotation of the second gear 34 drives the rotation of the third connecting rod 33. The rotation of the third connecting rod 33 drives the rotation of the second ball valve 32 and the first ball valve 21, closing the first drain pipe 10 and the second drain pipe 11, stopping the discharge of condensed water, and continuing to precipitate the condensed water.

[0077] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A low-temperature treatment system for nylon ATY oil wastewater, comprising a treatment device (1), characterized in that: A protective door (2) is hingedly connected to one side of the processing equipment (1), a processing tank (3) is installed inside the processing equipment (1), a liquid inlet pipe (4) is fixedly connected to the bottom end of the processing tank (3), a connecting pipe (5) is fixedly installed on the top end of the processing tank (3), a cooling tank (6) is fixedly installed on the end of the connecting pipe (5) away from the processing tank (3), the cooling tank (6) is arranged on one side of the processing tank (3), and a first drain assembly and a second drain assembly are installed inside the cooling tank (6); A delivery pipe (7) is installed inside the cooling tank (6), both ends of the delivery pipe (7) pass through the inner wall of the cooling tank (6) and extend to one side of the cooling tank (6), a circulation pump (8) is installed on the outer wall of the delivery pipe (7), a refrigerant liquid storage tank (9) is provided above the circulation pump (8), and the circulation pump (8) and the refrigerant liquid storage tank (9) are both installed inside the processing tank (3); A filter screen (12) is installed inside the cooling tank (6), and a cleaning component is provided on the outer wall of the filter screen (12); The first liquid discharge assembly includes a first liquid discharge pipe (10) fixedly mounted on one side of the cooling tank (6), a first ball valve (21) rotatably mounted inside the first liquid discharge pipe (10), a first connecting rod (20) fixedly mounted on the top of the first ball valve (21), a first gear (19) fixedly mounted on the top of the first connecting rod (20), a first rack plate (18) meshingly connected to one side of the first gear (19), a first protrusion (17) fixedly mounted on one end of the first rack plate (18), the first protrusion (17) slidably mounted inside a limit plate (16), the limit plate (16) fixedly mounted inside the cooling tank (6), a limit rod (14) slidably mounted inside the limit plate (16), a moving rod (15) fixedly mounted on one side of the limit rod (14), and a floating plate (13) fixedly connected to the bottom end of the limit rod (14); The second liquid discharge assembly comprises a second liquid discharge pipe (11) fixedly mounted on one side of the cooling tank (6); a second ball valve (32) is rotatably mounted inside the second liquid discharge pipe (11); a third connecting rod (33) is fixedly mounted on the top end of the second ball valve (32); and the third connecting rod (33) is fixedly mounted on the bottom end of the first ball valve (21).

2. The low-temperature treatment system for nylon ATY oil wastewater according to claim 1, characterized in that: The floating plate (13) is arranged inside the cooling tank (6), and both sides of the floating plate (13) are arranged at an inclination.

3. The low-temperature treatment system for nylon ATY oil wastewater according to claim 1, characterized in that: The bottom of the cooling tank (6) is arranged to be inclined.

4. The low-temperature treatment system for nylon ATY oil wastewater according to claim 1, characterized in that: The second liquid drain pipe (11) is arranged below the first liquid drain pipe (10), and the second liquid drain pipe (11) is arranged at the bottom of the cooling tank (6).

5. The low-temperature treatment system for nylon ATY oil wastewater according to claim 1, characterized in that: A second gear (34) is fixedly mounted on the outer wall of the third connecting rod (33), one side of the second gear (34) is meshedly connected to a second rack plate (23), one end of the second rack plate (23) is fixedly mounted with a second protrusion (22), and the second protrusion (22) is slidably mounted inside the cooling tank (6).

6. The low-temperature treatment system for nylon ATY oil wastewater according to claim 5, characterized in that: One end of the second rack plate (23) is fixedly connected to a push plate (24), and the push plate (24) is arranged on one side of the cooling tank (6).

7. The low-temperature treatment system for nylon ATY oil wastewater according to claim 1, characterized in that: The cleaning assembly includes a brush plate (29) arranged on the outer wall of the filter (12), bristles (30) are fixedly installed on the bottom end of the brush plate (29), the brush plate (29) is fixedly installed on the outer wall of the second connecting rod (28), the second connecting rod (28) is rotatably installed on the inner wall of the filter (12), a fixed rod (25) is slidably installed on the inner wall of the second connecting rod (28), the fixed rod (25) is fixedly installed on the top of the floating plate (13), the inner wall of the fixed rod (25) is provided with a sliding groove (31) and a spiral groove (26), the inner wall of the spiral groove (26) is embedded with a slider (27), and the slider (27) is fixedly installed on the inner wall of the second connecting rod (28).

8. A method for operating a low-temperature treatment system for nylon ATY oil wastewater, characterized in that: The following steps are involved: S1: When nylon ATY oil wastewater needs to be treated at low temperature, the wastewater is first discharged into the treatment tank (3) through the liquid inlet pipe (4), and then the wastewater is evaporated at low temperature in the treatment tank (3). The steam is then discharged into the cooling tank (6) through the connecting pipe (5) for condensation. Finally, the condensed water is filtered through the filter screen (12) and stored at the bottom of the cooling tank (6) for precipitation. S2: As more and more condensed water is stored inside the cooling tank (6), the floating plate (13) moves upward, the movement of the floating plate (13) drives the movement of the limiting rod (14), the movement of the limiting rod (14) drives the movement of the moving rod (15), when the moving rod (15) contacts the first protrusion (17), the movement of the moving rod (15) drives the first protrusion (17) to slide inside the limiting plate (16), the movement of the first protrusion (17) drives the movement of the first rack plate (18), the movement of the first rack plate (18) drives the rotation of the first gear (19), the rotation of the first gear (19) drives the rotation of the first connecting rod (20), the rotation of the first connecting rod (20) drives the rotation of the first ball valve (21), the first ball valve (21) rotates to discharge the condensed water inside the cooling tank (6) from the first drain pipe (10); S3: The rotation of the first ball valve (21) drives the rotation of the third connecting rod (33), and the rotation of the third connecting rod (33) drives the rotation of the second ball valve (32), thereby discharging the condensed water from the second drain pipe (11); S4: The movement of the floating plate (13) drives the movement of the fixed rod (25), causing the fixed rod (25) to slide inside the second connecting rod (28). When the spiral groove (26) slides to the outer wall of the slider (27), the second connecting rod (28) rotates. The rotation of the second connecting rod (28) drives the brush plate (29) and the bristles (30) to rotate, thereby cleaning the outer wall of the filter screen (12); S5: After the condensed water inside the cooling tank (6) is discharged, the float plate (13) moves to the bottom of the cooling tank (6). Similarly, the movement of the float plate (13) drives the movement of the moving rod (15). When the moving rod (15) moves to one end of the second protrusion (22), the movement of the moving rod (15) drives the second protrusion (22) to move inside the cooling tank (6). The movement of the second protrusion (22) drives the movement of the second rack plate (23). The movement of the second rack plate (23) drives the rotation of the second gear (34). The rotation of the second gear (34) drives the rotation of the third connecting rod (33). The rotation of the third connecting rod (33) drives the rotation of the second ball valve (32) and the first ball valve (21). The first drain pipe (10) and the second drain pipe (11) are closed, so that the condensed water stops being discharged and continues to be precipitated.

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