A treatment device and method for stable treatment of perchlorate wastewater

Abstract

The present invention belongs to the technical field of wastewater treatment, and specifically discloses a treatment device for stable treatment of perchlorate wastewater, including a casing, a flow sensing drive mechanism, an adaptive backwash mechanism and a compensatory water inlet mechanism, wherein the compensatory water inlet mechanism is arranged in the casing. The present invention can sense the liquid level height through a floating plate, thereby adjusting the actual size of the buffer water inlet valve; and the water inlet speed of the precision filtration zone is maintained within a certain range through negative feedback regulation. Not only that, in order to ensure that the water pressure in the pre-filtration zone can drive the adaptive backwash mechanism, the present invention also creatively proposes a flow sensing drive mechanism, which realizes the driving of the adaptive backwash mechanism through a structure similar to a hydraulic motor; in addition, the present invention can automatically replenish the liquid used for backwashing in the piston box through the guidance of the liquid guide shell.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment, and specifically refers to a treatment device and method for stable treatment of perchlorate wastewater. Background Art

[0002] Perchlorate appears in large quantities in industrial wastewater, which can have a significant negative impact on the human body. Therefore, wastewater treatment often requires treatment through sedimentation, filtration, adsorption and other systems. With the development and progress of the process, the equipment used must also be improved with the improvement of the process. At the same time, there are many areas that can be optimized in the purification equipment itself.

[0003] Wastewater purification often requires two steps, physical and chemical. The physical method mainly uses a filter element with micropores to filter out solid particle impurities in the liquid. This process is called pre-filtration. Therefore, the characteristics of pre-filtration are that the filtration speed limit is small and the filter element can be cleaned and reused after being blocked. The chemical method is mainly used to remove impurities that are extremely small or soluble in water. Because it is a chemical reaction and takes a certain amount of time, the liquid flow rate cannot be too fast and the filter element generally cannot be reused.

[0004] Due to the high content of particulate impurities in industrial wastewater, the current pre-filter element needs to be replaced frequently, which is not conducive to the continuity and overall efficiency of industrial production.

[0005] In addition, due to the unstable water flow rate of the water inlet joint, the rate at which the liquid flows through the pre-filtration area is unstable, but the precision filtration area can only ensure the filtration efficiency and effect at the same time when it is maintained near the rated flow rate; how to keep the water inlet speed of the precision filtration area stable when the water flow rate of the water inlet joint fluctuates is also a problem that needs to be solved urgently. Summary of the invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention proposes a treatment device and method for stable treatment of perchlorate wastewater. In order to maintain a stable water inlet speed in the precision filtration zone when the water inlet flow rate of the water inlet joint fluctuates, this scheme chooses to adopt a buffer tank to "cut the peaks and fill the valleys" of the drainage speed of the pre-filtration zone, thereby maintaining a stable water inlet speed in the precision filtration zone; and in order to simplify the structure, this scheme does not set a water pump, but directly sets a valve at the bottom of the buffer tank to complete the water inlet by the dead weight of the liquid. However, when the liquid level height of the buffer tank changes, the water pressure at the bottom of the buffer tank also changes, so that the water inlet speed in the precision filtration zone will also fluctuate. In order to solve this problem, the present invention creatively proposes a compensating water inlet mechanism, which can sense the liquid level height through a floating plate, thereby adjusting the actual size of the buffer water inlet valve; and through negative feedback regulation, the water inlet speed in the precision filtration zone is maintained within a certain range.

[0007] Moreover, in order to ensure that the water pressure in the pre-filtration area can drive the adaptive backwashing mechanism, the present invention also creatively proposes a flow sensing driving mechanism, which drives the adaptive backwashing mechanism through a structure similar to a hydraulic motor; in addition, the present invention can automatically replenish the liquid used for backwashing in the piston box through the guidance of the liquid guide shell.

[0008] The technical solution adopted by the present invention is as follows: The present invention proposes a treatment device for stable treatment of perchlorate wastewater, comprising a box, a flow sensing drive mechanism, an adaptive backwashing mechanism and a compensating water inlet mechanism, wherein the compensating water inlet mechanism is arranged in the box;

[0009] A water inlet joint is provided on the box body, and a pre-filtration area and a buffer tank are sequentially arranged on the top of the box body. A precision filtration area is provided below the pre-filtration area, and the top of the buffer tank is connected to the pre-filtration area. A buffer water inlet valve is provided between the bottom of the buffer tank and the precision filtration area, and the buffer tank and the precision filtration area are connected through the buffer water inlet valve.

[0010] Furthermore, the box body is provided with an impurity accumulation interlayer below the pre-filtration area, and an openable partition is provided between the pre-filtration area and the impurity accumulation interlayer. The interior of the box body is also provided with a primary adsorption area and a secondary adsorption area, the primary adsorption area is located below the precision filtration area, and the secondary adsorption area is located below the primary adsorption area.

[0011] Furthermore, the flow sensing drive mechanism includes a rotating support assembly, a top support rotating assembly and a liquid guide shell, the rotating support assembly is arranged in a box body, the top support rotating assembly is evenly distributed in a ring shape in the rotating support assembly, the liquid guide shell is arranged on the outside of the rotating support assembly, and the liquid guide shell is fixedly connected to the box body.

[0012] The flow-sensing drive mechanism is driven by the water pressure when the wastewater enters. The rotation speed of the flow-sensing drive mechanism is related to the flow rate but has nothing to do with the flow velocity. Therefore, through hydraulic drive, the backwashing frequency of the adaptive backwashing mechanism can be matched with the water treatment volume of the pre-filter area, thereby achieving the technical purpose of automatic backwashing and impurity removal after a certain amount of filtered water; thereby extending the cleaning and filtration cycle of the filter element in the pre-filter area.

[0013] Preferably, the rotating support assembly includes a mounting shaft, a bearing, a turntable and a cam, the mounting shaft is fixedly connected to the partition between the pre-filtration area and the buffer tank, the bearing is arranged on the mounting shaft, the turntable is arranged on the bearing, the turntable is annularly evenly provided with a first step hole and a second step hole, the first step hole and the second step hole are coaxially arranged, and the cam is fixedly connected to the mounting shaft.

[0014] As a further preferred embodiment of the present invention, the top support rotating assembly includes a fixed disc, a fork frame and a sliding piston, the fixed disc is fixedly connected to the first step hole, the fork frame is provided with a guide push rod, the guide push rod is snap-fitted and slidably arranged in the fixed disc, a roller is also provided at the end of the fork frame, the roller is in rolling contact with the cam, a first spring is arranged between the fork frame and the fixed disc, the sliding piston is snap-fitted and slidably arranged in the second step hole, and a second spring is arranged between the bottom of the second step hole and the sliding piston.

[0015] The water pressure in the pre-filter area can push the sliding piston to slide, so that the liquid enters the second step hole. At this time, the sliding piston supports the guide push rod to extend the fork frame, and then drives the turntable to rotate as a whole through the contact between the roller and the cam. By appropriately increasing the density of the support rotating assembly, the continuity of the rotation drive can be guaranteed.

[0016] Wherein, the liquid guide shell is fixedly connected to the partition between the pre-filtration area and the buffer tank, and a water inlet and a water outlet are provided on the liquid guide shell, and a guide pipe is provided on the water outlet. The circumferential surface of the turntable is in sliding and sealing contact with the inner wall of the liquid guide shell; the liquid in the water inlet can enter the second step hole, and the liquid is discharged through the guide pipe when the second step hole rotates to the water outlet.

[0017] Furthermore, the adaptive backwashing mechanism includes a transmission assembly, a force storage assembly and a backwashing assembly, the transmission assembly is arranged in a box, the force storage assembly is arranged in the box, and the backwashing assembly is arranged on the force storage assembly.

[0018] Preferably, the transmission assembly includes an adapter shaft and a spindle seat, the adapter shaft is fixedly connected to the side of the turntable, the adapter shaft is provided with a driving gear, the spindle seat is fixedly connected to the inner wall of the box body, a transmission spindle is rotatably provided on the spindle seat, a driven gear is provided on the transmission spindle, and the driven gear and the driving gear are meshed for transmission.

[0019] As a further preferred embodiment of the present invention, the force storage assembly includes a guide roller, a base, a guide slide and a guide slider. The guide roller is arranged on the transmission main shaft and rotates with the transmission main shaft. A spiral slide groove and a straight slide groove are provided on the outer wall of the guide roller. Both ends of the spiral slide groove are connected by the straight slide groove. The base is fixed to the box body, the guide slide seat is arranged on the base, the guide slider is snap-fitted and slidably arranged in the guide slide seat, and an offset slide rod is provided on the guide slider. The end of the offset slide rod is slidably arranged in the spiral slide groove and the straight slide groove, and the width of the straight slide groove is greater than the diameter of the offset slide rod.

[0020] The width of the spiral slide groove is slightly larger than the diameter of the offset slide rod to ensure that the offset slide rod can slide smoothly therein; the width of the straight slide groove is more than three times larger than the diameter of the offset slide rod to ensure that the guide roller can still rotate slowly normally during the process of the offset slide rod sliding and resetting along the straight slide groove.

[0021] Wherein, the reverse flushing assembly includes a piston box, a piston part and a force storage spring, the piston box is arranged on the base, a window part is provided on the top of the piston box, the end of the guide tube is located above the window part, the piston part is snap-fitted and slidably arranged in the piston box, a piston rod is provided on the piston part, the piston rod is fixedly connected to the guide slider, the piston rod is snap-fitted and slidably arranged on the side wall of the box body, the force storage spring is sleeved on the piston rod, and the force storage spring is located between the inner wall of the box body and the guide slider.

[0022] The liquid falls into the window part through the guide pipe. If the piston part is in an open state at this time, the liquid will first fill the piston box, and the excess liquid will fall into the buffer tank. During reverse flushing, the piston part will squeeze out the liquid in the piston box to achieve reverse flushing of the filter element in the pre-filter area, so that the impurities attached to the front side of the filter element fall off and enter the impurity accumulation interlayer.

[0023] Furthermore, the compensating water inlet mechanism includes a guide rail, a valve plate, a third spring and a floating plate. The guide rail is fixedly connected to the partition between the buffer tank and the precision filtration area. The valve plate is slidably arranged in the guide rail. A protrusion is provided on the valve plate. The third spring is arranged between the bottom of the buffer tank and the protrusion. The floating plate floats on the liquid surface. A pull rope is arranged between the floating plate and the protrusion.

[0024] The present invention also proposes a method for using a treatment device for stable treatment of perchlorate wastewater, which specifically comprises the following steps:

[0025] Step 1: First, the user needs to connect the wastewater outlet to the water inlet joint. When the wastewater flows through the pre-filter area, the solid impurity particles can be filtered through the filter element in the pre-filter area. During this process, some solid impurity particles will sink directly into the impurity accumulation interlayer, and others will adhere to the front side of the filter element in the pre-filter area;

[0026] Step 2: Due to the water inlet pressure in the pre-filter area, the liquid in the water inlet overcomes the elastic force of the second spring and pushes the sliding piston under the action of the water pressure, and enters the second step hole. When the sliding piston contacts the guide push rod and continues to slide, it pushes the fork frame toward the cam. The roller rolls on the inclined surface of the cam, so that the turntable can rotate relative to the mounting shaft.

[0027] When the top support rotating assembly containing liquid leaves the water inlet, it will enter a closed state through the sealing of the liquid guide shell. When it rotates to the water outlet, the fork frame and the second spring will be reset under the elastic force of the first spring and the second spring, and the liquid in the second step hole will be discharged through the guide pipe.

[0028] Step 3: In the above process, the turntable will rotate with the driving gear through the transfer shaft, and at the same time, it will rotate with the transmission main shaft and guide roller through the driven gear;

[0029] When the guide roller rotates, the spiral slide groove and the offset slide rod slide or roll contact, so that the guide slider can slide with the piston part and the piston rod. In this process, the force storage spring is compressed and the elastic force is accumulated at the same time.

[0030] When the piston part slides to the window part, the liquid in the guide tube will first fill the piston box, and then the excess liquid will directly enter the buffer tank;

[0031] When the guide roller rotates one circle and the offset slide bar moves to the straight slide groove, the guide slide block and the piston part will be reset under the elastic force of the storage spring. During this process, the filter element in the pre-filter area can be reversely flushed through the fine pipe connected to the piston box in the pre-filter area.

[0032] Step 4: After the particulate impurities are filtered out, the wastewater in the pre-filtration area enters the buffer tank, and then enters the precision filtration area through the buffer tank. After filtration and adsorption in the precision filtration area, the primary adsorption area and the secondary adsorption area, it can enter the next process;

[0033] The impurities filtered out in the pre-filter area sink into the impurity accumulation interlayer. When cleaning is needed, just close the partition between the pre-filter area and the impurity accumulation interlayer, and then clean the impurity accumulation interlayer.

[0034] Step 5: When the liquid level changes, the height of the float plate also changes. The float plate can slide up and down with the valve plate through the pull rope, thereby changing the actual size of the buffer inlet valve;

[0035] When the liquid level in the buffer tank is high, the bottom water pressure increases, and the float plate brings the valve plate up, thereby reducing the actual size of the buffer water inlet valve; when the liquid level in the buffer tank is low, the bottom water pressure decreases, and the valve plate drops, thereby increasing the actual size of the buffer water inlet valve.

[0036] The beneficial effects achieved by the present invention using the above structure are as follows:

[0037] (1) The flow-sensing drive mechanism is driven by the water pressure when the wastewater enters. The rotation speed of the flow-sensing drive mechanism is related to the flow rate but not to the flow velocity. Therefore, through hydraulic drive, the backwashing frequency of the adaptive backwashing mechanism can be matched with the water treatment volume of the pre-filter area, thereby achieving the technical purpose of automatic backwashing and impurity removal after a certain amount of filtered water; thereby extending the cleaning and filtration cycle of the filter element in the pre-filter area.

[0038] (2) The water pressure in the pre-filtration area can push the sliding piston to slide, so that the liquid enters the second step hole. At this time, the sliding piston supports the guide push rod to extend the fork frame, and then drives the turntable to rotate as a whole through the contact between the roller and the cam. By appropriately increasing the density of the support rotating assembly, the continuity of the rotation drive can be guaranteed.

[0039] (3) The width of the spiral slide groove is slightly larger than the diameter of the offset slide rod, ensuring that the offset slide rod can slide smoothly therein; the width of the straight slide groove is more than three times larger than the diameter of the offset slide rod, thereby ensuring that the guide roller can still rotate slowly normally during the process of the offset slide rod sliding and resetting along the straight slide groove.

[0040] (4) The liquid falls into the window part through the guide tube. If the piston part is in an open state at this time, the liquid will first fill the piston box, and the excess liquid will fall into the buffer tank. During reverse flushing, the piston part will squeeze out the liquid in the piston box, realizing reverse flushing of the filter element in the pre-filter area, so that the impurities attached to the front side of the filter element fall off and enter the impurity accumulation interlayer.

[0041] (5) The number of teeth on the driving gear is much smaller than that on the driven gear. This transmission ratio design can control the frequency of backwashing to match it with the specific working conditions. On the other hand, it also has the function of amplifying the torque, so that when there is a certain water pressure inside the pre-filter area, it can ensure that the adaptive backwashing mechanism is driven to accumulate force (the force accumulation spring can make the water pressure generated in the piston box greater than the water pressure inside the pre-filter area), thereby ensuring that the water flow can enter the pre-filter area during reverse punching. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A three-dimensional diagram of a treatment device for stable treatment of perchlorate wastewater proposed by the present invention;

[0043] Figure 2 A front view of a treatment device for stable treatment of perchlorate wastewater proposed by the present invention;

[0044] Figure 3 for Figure 2 A cross-sectional view along the cutting line AA;

[0045] Figure 4 for Figure 3 A cross-sectional view along the cutting line BB;

[0046] Figure 5 for Figure 3 A cross-sectional view along the cutting line CC;

[0047] Figure 6 A schematic diagram of the explosion structure of a treatment device for stable treatment of perchlorate wastewater proposed by the present invention;

[0048] Figure 7 for Figure 3 A partial enlarged view of point Ⅰ in the middle;

[0049] Figure 8 for Figure 3 A partial enlarged view of the middle II;

[0050] Fig. 9 for Figure 4 A partial enlarged view of the middle part III;

[0051] Fig.10 for Figure 6 A partial enlarged view of the middle IV;

[0052] Fig.11 for Figure 6 A partial enlarged view of point V in the middle;

[0053] Fig.12 for Figure 5 A partial enlarged view of the middle VI;

[0054] Fig.13 It is a schematic diagram of the location layout and partitioning inside the box;

[0055] Fig.14 Schematic diagram of the layout of the interior of the pre-filtration area and the impurity accumulation layer.

[0056] Among them, 1. box body, 2. flow sensing drive mechanism, 3. adaptive backwash mechanism, 4. compensating water inlet mechanism, 5. water inlet joint, 6. pre-filtration area, 7. buffer tank, 8. precision filtration area, 9. primary adsorption area, 10. secondary adsorption area, 11. impurity accumulation interlayer, 12. buffer water inlet valve, 13. rotating support assembly, 14. top support rotating assembly, 15. liquid guide shell, 16. mounting shaft, 17. bearing, 18. turntable, 19. cam, 20. fixed disc, 21. fork frame, 22. first spring, 23. sliding piston, 24. second spring, 25. water inlet part, 26. water outlet part, 27. guide pipe , 28. First step hole, 29. Second step hole, 30. Roller, 31. Guide push rod, 32. Transmission assembly, 33. Force storage assembly, 34. Back flushing assembly, 35. Adapter shaft, 36. Drive gear, 37. Spindle seat, 38. Transmission spindle, 39. Driven gear, 40. Guide roller, 41. Base, 42. Guide slide seat, 43. Guide slide block, 44. Piston box, 45. Piston part, 46. Force storage spring, 47. Spiral slide groove, 48. Straight slide groove, 49. Offset slide rod, 50. Window part, 51. Piston rod, 52. Guide rail, 53. Valve plate, 54. Third spring, 55. Float plate, 56. Pull rope.

[0057] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0058] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0059] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0060] like Figure 1 to Figure 12 As shown, the present invention proposes a treatment device and method for stable treatment of perchlorate wastewater, comprising a housing 1, a flow sensing drive mechanism 2, an adaptive backwashing mechanism 3 and a compensating water inlet mechanism 4, wherein the compensating water inlet mechanism 4 is arranged in the housing 1;

[0061] A water inlet joint 5 is provided on the box body 1, and a pre-filter area 6 and a buffer tank 7 are sequentially provided on the top of the box body 1. A precision filter area 8 is provided below the pre-filter area 6, and the top of the buffer tank 7 is connected to the pre-filter area 6. A buffer water inlet valve 12 is provided between the bottom of the buffer tank 7 and the precision filter area 8, and the buffer tank 7 and the precision filter area 8 are connected through the buffer water inlet valve 12.

[0062] The box body 1 is provided with an impurity accumulation interlayer 11 below the pre-filtration area 6, and an openable partition is provided between the pre-filtration area 6 and the impurity accumulation interlayer 11. The box body 1 is also provided with a primary adsorption area 9 and a secondary adsorption area 10. The primary adsorption area 9 is located below the precision filtration area 8, and the secondary adsorption area 10 is located below the primary adsorption area 9.

[0063] The compensating water inlet mechanism 4 includes a guide rail 52, a valve plate 53, a third spring 54 and a floating plate 55. The guide rail 52 is fixedly connected to the partition between the buffer tank 7 and the precision filtration area 8. The valve plate 53 is slidably arranged in the guide rail 52. A protrusion is arranged on the valve plate 53. The third spring 54 is arranged between the bottom of the buffer tank 7 and the protrusion. The floating plate 55 floats on the liquid surface. A pull rope 56 is arranged between the floating plate 55 and the protrusion.

[0064] The flow sensing drive mechanism 2 includes a rotating support assembly 13, a top support rotating assembly 14 and a liquid guide shell 15. The rotating support assembly 13 is arranged in the housing 1, the top support rotating assembly 14 is evenly distributed in a ring shape in the rotating support assembly 13, the liquid guide shell 15 is arranged outside the rotating support assembly 13, and the liquid guide shell 15 is fixedly connected to the housing 1.

[0065] The flow-sensing drive mechanism 2 is driven by the water pressure when wastewater enters. The rotation speed of the flow-sensing drive mechanism 2 is related to the flow rate but has nothing to do with the flow velocity. Therefore, through hydraulic drive, the backwashing frequency of the adaptive backwashing mechanism 3 can be matched with the water treatment volume of the pre-filter area 6, thereby achieving the technical purpose of automatic backwashing and impurity removal after a certain amount of filtered water; thereby extending the cleaning and filtration cycle of the filter element in the pre-filter area 6.

[0066] The rotating support assembly 13 includes a mounting shaft 16, a bearing 17, a turntable 18 and a cam 19. The mounting shaft 16 is fixedly connected to the partition between the pre-filtration area 6 and the buffer tank 7. The bearing 17 is arranged on the mounting shaft 16. The turntable 18 is arranged on the bearing 17. The turntable 18 is evenly distributed in an annular shape with first step holes 28 and second step holes 29. The first step holes 28 and the second step holes 29 are coaxially arranged. The cam 19 is fixedly connected to the mounting shaft 16.

[0067] The support rotating assembly 14 includes a fixed disc 20, a fork frame 21 and a sliding piston 23. The fixed disc 20 is fixedly connected to the first step hole 28. The fork frame 21 is provided with a guide push rod 31. The guide push rod 31 is slidably arranged in the fixed disc 20. A roller 30 is also provided at the end of the fork frame 21. The roller 30 and the cam 19 are in rolling contact. A first spring 22 is arranged between the fork frame 21 and the fixed disc 20. The sliding piston 23 is slidably arranged in the second step hole 29. A second spring 24 is arranged between the bottom of the second step hole 29 and the sliding piston 23.

[0068] The water pressure in the pre-filter area 6 can push the sliding piston 23 to slide, so that the liquid enters the second step hole 29. At this time, the sliding piston 23 supports the guide push rod 31 to extend the fork frame 21, and then drives the turntable 18 to rotate as a whole through the contact between the roller 30 and the cam 19. By appropriately increasing the density of the supporting rotating assembly 14, the continuity of the rotation drive can be guaranteed.

[0069] The liquid guide shell 15 is fixedly connected to the partition between the pre-filtration area 6 and the buffer tank 7. The liquid guide shell 15 is provided with a water inlet 25 and a water outlet 26. The water outlet 26 is provided with a guide pipe 27. The circumferential surface of the turntable 18 is in sliding and sealing contact with the inner wall of the liquid guide shell 15. The liquid in the water inlet 25 can enter the second step hole 29, and when the second step hole 29 rotates to the water outlet 26, the liquid is discharged through the guide pipe 27.

[0070] The adaptive backwashing mechanism 3 includes a transmission assembly 32 , a force storage assembly 33 and a backwashing assembly 34 . The transmission assembly 32 is arranged in the housing 1 , the force storage assembly 33 is arranged in the housing 1 , and the backwashing assembly 34 is arranged on the force storage assembly 33 .

[0071] The transmission assembly 32 includes an adapter shaft 35 and a spindle seat 37. The adapter shaft 35 is fixedly connected to the side of the turntable 18. A driving gear 36 is provided on the adapter shaft 35. The spindle seat 37 is fixedly connected to the inner wall of the box body 1. A transmission spindle 38 is rotatably provided on the spindle seat 37. A driven gear 39 is provided on the transmission spindle 38. The driven gear 39 and the driving gear 36 are meshed for transmission.

[0072] The power storage assembly 33 includes a guide roller 40, a base 41, a guide slide 42 and a guide slider 43. The guide roller 40 is arranged on the transmission main shaft 38 and rotates with the transmission main shaft 38. A spiral slide groove 47 and a straight slide groove 48 are provided on the outer wall of the guide roller 40. Both ends of the spiral slide groove 47 are connected by the straight slide groove 48. The base 41 is fixed to the box body 1. The guide slide 42 is arranged on the base 41. The guide slider 43 is engaged and slidably arranged in the guide slide 42. An offset slide rod 49 is provided on the guide slider 43. The end of the offset slide rod 49 is slidably arranged in the spiral slide groove 47 and the straight slide groove 48. The width of the straight slide groove 48 is greater than the diameter of the offset slide rod 49.

[0073] The width of the spiral slide groove 47 is slightly larger than the diameter of the offset slide rod 49 to ensure that the offset slide rod 49 can slide smoothly therein. The width of the straight slide groove 48 is more than three times the diameter of the offset slide rod 49 to ensure that the guide roller 40 can still rotate slowly normally during the process of the offset slide rod 49 sliding and resetting along the straight slide groove 48.

[0074] The reverse flushing assembly 34 includes a piston box 44, a piston portion 45 and a force storage spring 46. The piston box 44 is arranged on the base 41. A window portion 50 is provided above the piston box 44. The end of the guide tube 27 is located above the window portion 50. The piston portion 45 is slidably arranged in the piston box 44. A piston rod 51 is provided on the piston portion 45. The piston rod 51 is fixedly connected to the guide slider 43. The piston rod 51 is slidably arranged on the side wall of the box body 1. The force storage spring 46 is sleeved on the piston rod 51. The force storage spring 46 is located between the inner wall of the box body 1 and the guide slider 43.

[0075] The liquid falls into the window portion 50 through the guide tube 27. If the piston portion 45 is in an open state at this time, the liquid will first fill the piston box 44, and the excess liquid will fall into the buffer tank 7. During reverse flushing, the piston portion 45 will squeeze out the liquid in the piston box 44, thereby realizing reverse flushing of the filter element in the pre-filter area 6, so that impurities attached to the front side of the filter element fall off and enter the impurity accumulation interlayer 11.

[0076] like Fig.13 As shown, the figure shows the positions of various partitions in the box body 1, and the arrows indicate the flow direction of the liquid in the box body 1.

[0077] like Fig.14As shown in the figure, the structural distribution inside the pre-filter area 6 is schematically shown. The vertical box represents the filter element. Since the direction of liquid flow is from left to right, impurities will accumulate on the left side of the filter element. The right side of the filter element is a thin pipe connected to the piston box 44 for reverse flushing. When the water pressure in the thin pipe is large, the internal thin water flow can reversely impact the filter element with a large pressure. Although a stream of water can only impact one point on the filter element, when the distribution and density of the impact points are reasonably set, a good flushing effect can still be achieved on the impurities on the filter element. The horizontal box indicates the position of the impurity accumulation interlayer 11.

[0078] When in use, the user first needs to connect the wastewater outlet to the water inlet connector 5. When the wastewater flows through the pre-filter area 6, the solid impurity particles can be filtered by the filter element in the pre-filter area 6. During this process, some of the solid impurity particles will directly sink into the impurity accumulation interlayer 11, and others will adhere to the front side of the filter element in the pre-filter area 6.

[0079] Embodiment 1: After the particulate impurities are filtered out of the wastewater in the pre-filtration zone 6, the wastewater enters the buffer tank 7, and then enters the precision filtration zone 8 through the buffer tank 7. Since the reaction of the wastewater in the precision filtration zone 8 requires a certain duration, the filtration speed of the precision filtration zone 8 can basically be considered to be constant. Therefore, the buffer tank 7 can keep the speed of the liquid entering the precision filtration zone 8 stable when the water discharge speed in the pre-filtration zone 6 is uneven; after filtration and adsorption in the precision filtration zone 8, the primary adsorption zone 9 and the secondary adsorption zone 10, it can enter the next process.

[0080] Part of the impurities filtered out in the pre-filtering area 6 will enter the impurity accumulation interlayer 11. When cleaning is needed, it is only necessary to temporarily close the partition between the pre-filtering area 6 and the impurity accumulation interlayer 11, and then clean the impurity accumulation interlayer 11.

[0081] Embodiment 2: Since there is water inlet pressure in the pre-filter area 6, under the action of the water pressure, the liquid in the water inlet portion 25 will overcome the elastic force of the second spring 24 to push the sliding piston 23 and enter the second step hole 29. When the sliding piston 23 contacts the guide push rod 31 and continues to slide, it will push the fork frame 21 toward the cam 19. Through the process of the roller 30 rolling on the inclined surface of the cam 19, the turntable 18 can be rotated relative to the mounting shaft 16.

[0082] When the top support rotating assembly 14 containing liquid leaves the water inlet 25, it will enter a closed state through the sealing of the liquid guide shell 15. When it rotates to the water outlet 26, the fork frame 21 and the second spring 24 will be reset under the elastic force of the first spring 22 and the second spring 24, and the liquid in the second step hole 29 will be discharged through the guide pipe 27.

[0083] By appropriately increasing the density of the top support rotating assembly 14, the continuity of the rotating drive can be ensured.

[0084] In the above process, the turntable 18 rotates with the driving gear 36 through the transfer shaft 35, and at the same time rotates with the transmission main shaft 38 and the guide roller 40 through the driven gear 39;

[0085] When the guide roller 40 rotates, the spiral slide groove 47 and the biasing slide rod 49 slide or roll to make the guide slider 43 slide with the piston part 45 and the piston rod 51. In this process, the force storage spring 46 is compressed and accumulates elastic force.

[0086] When the piston portion 45 slides to the window portion 50, the liquid in the guide tube 27 will first fill the piston box 44, and then the excess liquid will directly enter the buffer tank 7;

[0087] When the guide roller 40 rotates one circle and the offset slide rod 49 moves to the straight slide groove 48, the guide slider 43 and the piston part 45 will gradually return to their original position under the elastic force of the storage spring 46. During this process, the filter element in the pre-filter area 6 can be backwashed through a fine pipe connected to the piston box 44 in the pre-filter area 6, so that most of the particulate impurities attached to the filter element fall off and settle in the impurity accumulation interlayer 11.

[0088] Although a stream of water can only impact one point on the filter element, when the distribution and density of the impact points are reasonably set, a good flushing effect can still be achieved on the impurities on the filter element.

[0089] The number of teeth of the driving gear 36 is much smaller than that of the driven gear 39. This transmission ratio design can control the frequency of backwashing to match it with the specific working conditions on the one hand, and on the other hand, it also has the function of amplifying the torque, so that when there is a certain water pressure inside the pre-filter area 6, it can ensure that the adaptive backwashing mechanism 3 is driven to accumulate force (the force storage spring 46 can make the water pressure generated in the piston box 44 greater than the water pressure inside the pre-filter area 6), thereby ensuring that the water flow can enter the pre-filter area 6 during reverse punching.

[0090] Embodiment 3: Since the liquid level in the buffer tank 7 is changing, the water pressure at the buffer water inlet valve 12 is also changing. When the liquid level changes, the height of the floating plate 55 is also changing. The floating plate 55 can slide up and down with the valve plate 53 through the pull rope 56, thereby changing the actual size of the buffer water inlet valve 12;

[0091] When the liquid level in the buffer tank 7 is high, the bottom water pressure increases, and the float plate 55 brings the valve plate 53 up, thereby reducing the actual size of the buffer water inlet valve 12; when the liquid level in the buffer tank 7 is low, the bottom water pressure decreases, and the valve plate 53 descends, thereby increasing the actual size of the buffer water inlet valve 12; through the above-mentioned negative feedback regulation method, when the liquid level in the buffer tank 7 changes, the water inlet speed fluctuation of the precision filtration zone 8 can be controlled within a certain range.

[0092] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0093] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A treatment device for stable treatment of perchlorate wastewater, comprising a housing, characterized in that: It also includes a flow sensing drive mechanism, an adaptive backwash mechanism and a compensatory water inlet mechanism, wherein the flow sensing drive mechanism includes a rotating support assembly, a top support rotating assembly and a liquid guide shell, wherein the rotating support assembly is arranged in a box body, the top support rotating assembly is evenly arranged in an annular shape in the rotating support assembly, the liquid guide shell is arranged outside the rotating support assembly, and the liquid guide shell is fixedly connected to the box body; The box body is provided with a water inlet joint, the top of the box body is sequentially provided with a pre-filtering area and a buffer tank, a precision filtering area is provided below the pre-filtering area, the top of the buffer tank is connected to the pre-filtering area, a buffer water inlet valve is provided between the bottom of the buffer tank and the precision filtering area, and the buffer tank and the precision filtering area are connected through the buffer water inlet valve; The rotating support assembly comprises a mounting shaft, a bearing, a rotating disk and a cam, wherein the mounting shaft is fixedly connected to a partition between the pre-filtering area and the buffer tank, the bearing is arranged on the mounting shaft, the rotating disk is arranged on the bearing, the rotating disk is evenly provided with a first step hole and a second step hole in an annular shape, the first step hole and the second step hole are coaxially arranged, and the cam is fixedly connected to the mounting shaft; The support rotation assembly includes a fixed disc, a fork frame and a sliding piston, the fixed disc is fixedly connected to the first step hole, the fork frame is provided with a guide push rod, the guide push rod is slidably arranged in the fixed disc, the end of the fork frame is also provided with a roller, the roller and the cam are in rolling contact, a first spring is arranged between the fork frame and the fixed disc, the sliding piston is slidably arranged in the second step hole, and a second spring is arranged between the bottom of the second step hole and the sliding piston; The liquid guide shell is fixedly connected to the partition between the pre-filtration area and the buffer tank. The liquid guide shell is provided with a water inlet and a water outlet. The water outlet is provided with a guide pipe. The circumferential surface of the turntable is in sliding and sealing contact with the inner wall of the liquid guide shell. The liquid in the water inlet can enter the second step hole, and the liquid is discharged through the guide pipe when the second step hole rotates to the water outlet.

2. The treatment equipment for stable treatment of perchlorate wastewater according to claim 1, characterized in that: The adaptive backwashing mechanism comprises a transmission assembly, a force storage assembly and a backwashing assembly, wherein the transmission assembly is arranged in a box, the force storage assembly is arranged in the box, and the backwashing assembly is arranged on the force storage assembly; The compensating water inlet mechanism is arranged in the box body.

3. A treatment device for stable treatment of perchlorate wastewater according to claim 2, characterized in that: The transmission assembly includes an adapter shaft and a spindle seat, the adapter shaft is fixedly connected to the side of the turntable, a driving gear is arranged on the adapter shaft, the spindle seat is fixedly connected to the inner wall of the box body, a transmission spindle is rotatably arranged on the spindle seat, a driven gear is arranged on the transmission spindle, and the driven gear and the driving gear are meshed for transmission.

4. The treatment equipment for stable treatment of perchlorate wastewater according to claim 3, characterized in that: The force storage assembly includes a guide roller, a base, a guide slide and a guide slider. The guide roller is arranged on the transmission main shaft and rotates with the transmission main shaft. A spiral slide groove and a straight slide groove are provided on the outer wall of the guide roller. Both ends of the spiral slide groove are connected by the straight slide groove. The base is fixed to the box body, and the guide slide seat is arranged on the base. The guide slider is engaged and slidably arranged in the guide slide seat. An offset slide rod is provided on the guide slider. The end of the offset slide rod is slidably arranged in the spiral slide groove and the straight slide groove, and the width of the straight slide groove is greater than the diameter of the offset slide rod.

5. A treatment device for stable treatment of perchlorate wastewater according to claim 4, characterized in that: The reverse flushing assembly includes a piston box, a piston part and a force storage spring. The piston box is arranged on a base. A window part is provided on the top of the piston box. The end of the guide pipe is located above the window part. The piston part is slidably arranged in the piston box. A piston rod is provided on the piston part. The piston rod is fixedly connected to a guide slider. The piston rod is slidably arranged on the side wall of the box body. The force storage spring is sleeved on the piston rod. The force storage spring is located between the inner wall of the box body and the guide slider.

6. A treatment equipment for stable treatment of perchlorate wastewater according to claim 1, characterized in that: The compensating water inlet mechanism includes a guide rail, a valve plate, a third spring and a floating plate. The guide rail is fixedly connected to the partition between the buffer tank and the precision filtration area. The valve plate is slidably arranged in the guide rail. A protrusion is arranged on the valve plate. The third spring is arranged between the bottom of the buffer tank and the protrusion. The floating plate floats on the liquid surface. A pull rope is arranged between the floating plate and the protrusion.

7. The treatment equipment for stable treatment of perchlorate wastewater according to claim 1, characterized in that: The box body is provided with an impurity accumulation interlayer below the pre-filtration area, and an openable partition is provided between the pre-filtration area and the impurity accumulation interlayer. The box body is also provided with a primary adsorption area and a secondary adsorption area inside, the primary adsorption area is located below the precision filtration area, and the secondary adsorption area is located below the primary adsorption area.

8. A method for using a treatment device for stable treatment of perchlorate wastewater according to any one of claims 5 to 7, characterized in that: The steps include: Step 1: First, the user needs to connect the wastewater outlet to the water inlet joint. When the wastewater flows through the pre-filter area, the solid impurity particles can be filtered through the filter element in the pre-filter area. During this process, some solid impurity particles will sink directly into the impurity accumulation interlayer, and others will adhere to the front side of the filter element in the pre-filter area; Step 2: Due to the water inlet pressure in the pre-filter area, the liquid in the water inlet overcomes the elastic force of the second spring and pushes the sliding piston under the action of the water pressure, and enters the second step hole. When the sliding piston contacts the guide push rod and continues to slide, it pushes the fork frame toward the cam. The roller rolls on the inclined surface of the cam, so that the turntable can rotate relative to the mounting shaft. When the top support rotating assembly containing liquid leaves the water inlet, it will enter a closed state through the sealing of the liquid guide shell. When it rotates to the water outlet, the fork frame and the second spring will be reset under the elastic force of the first spring and the second spring, and the liquid in the second step hole will be discharged through the guide pipe. Step 3: In the above process, the turntable will rotate with the driving gear through the transfer shaft, and at the same time, it will rotate with the transmission main shaft and guide roller through the driven gear; When the guide roller rotates, the spiral slide groove and the offset slide rod slide or roll contact, so that the guide slider can slide with the piston part and the piston rod. In this process, the force storage spring is compressed and the elastic force is accumulated at the same time. When the piston part slides to the window part, the liquid in the guide tube will first fill the piston box, and then the excess liquid will directly enter the buffer tank; When the guide roller rotates one circle and the offset slide bar moves to the straight slide groove, the guide slide block and the piston part will be reset under the elastic force of the storage spring. During this process, the filter element in the pre-filter area can be reversely flushed through the fine pipe connected to the piston box in the pre-filter area. Step 4: After the particulate impurities are filtered out, the wastewater in the pre-filtration area enters the buffer tank, and then enters the precision filtration area through the buffer tank. After filtration and adsorption in the precision filtration area, the primary adsorption area and the secondary adsorption area, it can enter the next process; The impurities filtered out in the pre-filter area sink into the impurity accumulation interlayer. When cleaning is needed, just close the partition between the pre-filter area and the impurity accumulation interlayer, and then clean the impurity accumulation interlayer. Step 5: When the liquid level changes, the height of the float plate also changes. The float plate can slide up and down with the valve plate through the pull rope, thereby changing the actual size of the buffer inlet valve; When the liquid level in the buffer tank is high, the bottom water pressure increases, and the float plate brings the valve plate up, thereby reducing the actual size of the buffer water inlet valve; when the liquid level in the buffer tank is low, the bottom water pressure decreases, and the valve plate drops, thereby increasing the actual size of the buffer water inlet valve.

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