Wastewater purification treatment device and treatment method for photovoltaic industry

Abstract

The invention relates to the technical field of the photovoltaic industry, in particular to a wastewater purification treatment device for the photovoltaic industry and a treatment method.The wastewater purification treatment device comprises a sedimentation tank, the left side of the sedimentation tank is provided with a water inlet allowing wastewater to enter, and the inner side surface of the sedimentation tank is fixedly connected with a buffer chamber communicating with the water inlet; the bottom surface of the buffer chamber is provided with a diversion port for wastewater to flow out, the bottom of the buffer chamber is fixedly connected with a support frame, the surface of the support frame is provided with a water supply assembly capable of moving up and down, and the water supply assembly is used for receiving the wastewater flowing out of the diversion port and conveying the wastewater to the internal area of the sedimentation tank; the water supply assembly comprises a water separation frame and a bottom plate, the bottom plate is connected to the bottom end of the water separation frame in an up-down moving mode, and a lifting block is fixedly connected to the surface of the water separation frame.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic industry, and in particular to a wastewater purification treatment device and treatment method for photovoltaic industry. Background Art

[0002] In the photovoltaic industry, wastewater mainly comes from the silicon wafer cutting process. Taking the multi-wire cutting process as an example, the cutting process requires the use of cutting fluid to achieve the purpose of cooling and lubricating the cutting wire. This type of cutting fluid is generally a suspension mixed with polyethylene glycol and silicon carbide micropowder. After the cutting operation is completed, the cutting fluid is mixed into the wastewater together with a large amount of silicon powder particles, so that the silicon wafer cutting wastewater contains many fine silicon powder and other solid suspended matter. They are evenly dispersed in the wastewater and are in a suspended state. If they are discharged directly, it will inevitably cause turbidity in the water, seriously affecting the water quality, and it is very easy to clog the pipes and filters of subsequent treatment equipment, hindering the effective purification of wastewater. In view of this, for this type of wastewater, the physical and chemical flocculation sedimentation technology is usually used first. Appropriate coagulants and flocculants are added to the wastewater to promote the coagulation of suspended particles, colloidal substances and some soluble pollutants in the wastewater, and then sedimentation and separation to reduce the workload of subsequent purification treatment, effectively improve the overall treatment efficiency and effect, thereby promoting the green and sustainable development of the photovoltaic industry.

[0003] In the sedimentation tank stage of photovoltaic industry wastewater treatment, after adding coagulants and flocculants, the suspended particles, colloidal substances and some soluble pollutants in the wastewater coagulate with each other to form flocs. These flocs settle to the bottom of the sedimentation tank by gravity. As time goes by and the treatment process continues, the flocs accumulate and form sludge. In the sedimentation tank, the flocs slowly settle under the action of gravity. However, the flow rate at the wastewater inlet is usually too fast, and the flocs at the water inlet have a high probability of being dispersed by the sewage with a too fast flow rate, resulting in low sedimentation efficiency and long sedimentation time. Summary of the invention

[0004] The purpose of the present invention is to provide a photovoltaic industry wastewater purification treatment device and treatment method to solve the problem of excessively fast flow rate of existing wastewater when it enters a sedimentation tank.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A wastewater purification treatment device for photovoltaic industry includes a sedimentation tank, a water inlet for wastewater to enter is provided on the left side of the sedimentation tank, the inner surface of the sedimentation tank is fixedly connected to a buffer chamber connected to the water inlet, the bottom surface of the buffer chamber is provided with a diversion port for wastewater to flow out, the bottom of the buffer chamber is fixedly connected to a support frame, the surface of the support frame is equipped with a water supply component that can move up and down, the water supply component is used to receive the wastewater flowing out of the diversion port and transport it to the internal area of ​​the sedimentation tank, the water supply component includes a water-blocking frame and a bottom plate, and the bottom plate can be moved up and down and is connected to the bottom end of the water-blocking frame.

[0007] Preferably, a lifting block is fixedly connected to the surface of the water-blocking frame, and a second vertically arranged screw is rotatably connected to the surface of the support frame. The second screw movably penetrates the surface of the lifting block, and the second screw and the lifting block are threadedly connected.

[0008] Preferably, the interior of the water-blocking frame is rotatably connected to a third screw rod, the surface of the third screw rod is coaxially fixedly connected to a first limiting ring, the first limiting ring and the water-blocking frame are rotatably connected, a threaded sleeve rod is installed on the surface of the bottom plate, the threaded sleeve rod movably passes through the bottom of the water-blocking frame, and the threaded sleeve rod is coaxially threadedly connected to the third screw rod.

[0009] Preferably, a linkage sleeve is rotatably connected to the surface of the buffer chamber, and a second limit ring is coaxially fixedly connected to the surface of the linkage sleeve. The second limit ring and the buffer chamber are rotatably connected, and the linkage sleeve movably passes through the top of the water-blocking frame, and the linkage sleeve is connected to a third screw coaxially sleeved, and the third screw rotates synchronously with the linkage sleeve.

[0010] Preferably, the surface of the second screw rod is coaxially fixedly connected with the second bevel gear, the surface of the linkage sleeve rod is coaxially fixedly connected with the first bevel gear, a transmission shaft for transmission is meshingly connected between the first bevel gear and the second bevel gear, the transmission shaft is rotatably connected with the buffer chamber, a linkage block that can move up and down is installed at the bottom end of the base plate, the bottom end of the threaded sleeve rod is coaxially fixedly connected with a square block, the surface of the linkage block is cooperated with to open a circular rotating groove for the square block to rotate, and the surface of the linkage block is cooperated with to open a square positioning groove for the square block to be embedded.

[0011] Preferably, the surface of the linkage block is fixedly connected to a limit slider, the surface of the base plate is provided with a third slide groove for the limit slider to move up and down, and a return spring is fixedly connected between the groove wall of the third slide groove and the surface of the linkage block.

[0012] Preferably, there are multiple diversion ports, the number of the water delivery components corresponds one-to-one to the number of the diversion ports, a first slide groove is provided at the mouth wall of each diversion port, and a sealing plate for opening and closing the corresponding diversion port is slidably connected in each of the first slide grooves.

[0013] Preferably, the surface of the buffer chamber is rotatably connected to the same number of first screws as the sealing plates, each of the first screws is threadedly connected to a sealing plate, the surface of the buffer chamber is rotatably connected to the same number of square rods as the first screws, and each square rod is coaxially aligned with a first screw, the surface of the buffer chamber is connected to a horizontally movable gear bar, each of the gear shafts is meshed with the gear bar, the surface of each gear shaft is coaxially slidably connected to a square rod, and the end of each of the first screws is coaxially matched to form a square slot for the square rod to be embedded.

[0014] A photovoltaic industry wastewater purification treatment method is carried out using a photovoltaic industry wastewater purification treatment device, and the specific steps are as follows:

[0015] A. The pretreated wastewater flows into the buffer chamber from the water inlet, and then falls into the water delivery component from the diversion port;

[0016] B. Rotate the second screw to drive the lifting block to move downward, and the movement of the lifting block drives the water blocking frame to move downward;

[0017] C. When the water delivery assembly moves downward, the bottom plate as a whole enters the wastewater level in the sedimentation tank. The buoyancy generated by the wastewater pushes the linkage block upward. The upward movement of the linkage block causes the square block to move into the square positioning groove, limiting the rotation of the threaded sleeve rod.

[0018] D. Continue to rotate the second screw rod to move the water barrier frame further downward. At the same time, the second screw rod drives the linkage sleeve rod to rotate, the linkage sleeve rod drives the third screw rod to rotate, the third screw rod rotates and drives the threaded sleeve rod to move downward, the threaded sleeve rod moves and drives the bottom plate to move downward, and a gap is formed between the bottom plate and the bottom end of the water barrier frame. The wastewater in the water supply assembly flows into the sedimentation tank from the gap until the liquid level of the wastewater in the water supply assembly reaches the same level as that in the sedimentation tank.

[0019] E. Return the water delivery component to repeat the wastewater delivery.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] By setting up a step-by-step movement mechanism for the water delivery component and cleverly utilizing the principle of hydraulic difference, the wastewater can be smoothly delivered to the sedimentation tank and smoothly mixed with the original wastewater in the sedimentation tank, thereby greatly reducing the disturbance of the incoming water flow to the internal water body, effectively maintaining the stability of the water flow state in the device, ensuring that the flocs settle in a relatively calm water flow environment, reducing the "re-suspension to re-sedimentation" cycle repeatedly started due to external water flow impact, avoiding long-term suspension of flocs to consume the efficiency of flocculants, ensuring the long-term and stability of the sedimentation effect, and laying a solid foundation for subsequent efficient sedimentation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the present invention as a whole;

[0023] Figure 2 It is a schematic diagram of the structure inside the sedimentation tank of the present invention;

[0024] Figure 3 It is a schematic diagram of the vertical section of the structure inside the sedimentation tank of the present invention;

[0025] Figure 4 It is a schematic diagram of a cross section of a buffer chamber of the present invention;

[0026] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle

[0027] Figure 6 It is a schematic diagram of a cross section of the first screw rod and the gear shaft of the present invention;

[0028] Figure 7 It is a schematic structural diagram of a vertical section of a water delivery assembly of the present invention;

[0029] Figure 8 For the present invention Figure 7 A magnified view of the structure at B in the middle;

[0030] Fig. 9 It is a structural schematic diagram of the linkage sleeve rod of the present invention;

[0031] Fig.10 is a schematic structural diagram of the third screw of the present invention;

[0032] Fig.11 It is a schematic diagram of a vertical section of a threaded sleeve rod and a linkage block of the present invention;

[0033] Fig.12 This is a state display diagram of the second screw transmission of the present invention;

[0034] Fig.13 For the present invention Fig.12 Enlarged view of the structure at C in the middle.

[0035] In the figure: 1. sedimentation tank; 2. water inlet; 3. buffer chamber; 4. diversion port; 5. first slide; 6. sealing plate; 7. first screw; 8. gear shaft; 9. gear bar; 10. second slide; 11. driving gear; 12. first motor; 13. electric push rod; 14. connecting shaft; 15. square rod; 16. support frame; 17. second screw; 18. second motor; 19. lifting block; 20. water-proof frame; 21. third screw; 22. first limit ring; 23. threaded sleeve; 24. square block; 25. circular rotating groove; 26. square positioning groove; 27. linkage block; 28. third slide; 29. ​​reset spring; 30. bottom plate; 31. linkage sleeve; 32. second limit ring; 33. first bevel gear; 34. transmission shaft; 35. second bevel gear; 36. limit slider. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 12 , the present invention provides a technical solution.

[0038] A wastewater purification and treatment device for photovoltaic industry includes a sedimentation tank 1, a water inlet 2 for wastewater to enter is provided on the left side of the sedimentation tank 1, a buffer chamber 3 connected to the water inlet 2 is fixedly connected to the inner surface of the sedimentation tank 1, and the wastewater enters through the water inlet 2 and flows into the buffer chamber 3. It is worth noting that those skilled in the art can know based on actual needs that the buffer chamber 3 can be designed as a top-closed structure according to actual conditions, and a diversion port 4 for wastewater to flow out is provided on the bottom surface of the buffer chamber 3. A support frame 16 is fixedly connected to the bottom of the buffer chamber 3, and a water supply component that can move up and down is installed on the surface of the support frame 16. The water supply component is used to receive the wastewater flowing out of the diversion port 4 and transport it to the internal area of ​​the sedimentation tank 1. The water supply component includes The bottom plate 30 includes a water-blocking frame 20 and a bottom plate 30. The bottom plate 30 can move up and down and is connected to the bottom end of the water-blocking frame 20. Conventionally, the bottom plate 30 can close the bottom surface of the water-blocking frame 20, and the wastewater flowing out from the diversion port 4 enters the water supply component. The water supply component first moves downward to make the bottom plate 30 immersed below the liquid level of the wastewater in the sedimentation tank 1, and then the bottom plate 30 moves downward again. In this way, a gap is formed between the bottom plate 30 and the bottom end of the water-blocking frame 20. Based on the principle of hydraulic pressure difference, the wastewater inside the water supply component is driven by pressure and flows out slowly and orderly from the preset gap, so that the liquid level of the wastewater inside the water supply component is consistent with the liquid level of the wastewater in the sedimentation tank 1, and finally the purpose of smoothly transporting the wastewater to the sedimentation tank 1 is achieved.

[0039] A lifting block 19 is fixedly connected to the surface of the water-blocking frame 20, and a second vertically arranged second screw 17 is rotatably connected to the surface of the support frame 16. The second screw 17 movably penetrates the surface of the lifting block 19, and the second screw 17 and the lifting block 19 are threadedly connected. By driving the second screw 17 to rotate, the lifting block 19 moves up and down according to the threaded action between the second screw 17 and the lifting block 19, thereby driving the water-blocking frame 20 to move up and down, thereby achieving the purpose of installing a water supply component that can move up and down on the surface of the support frame 16. The second screw 17 movably penetrates the surface of the buffer chamber 3, and a second motor 18 is installed on the surface of the buffer chamber 3. The second motor 18 is used to drive the second screw 17 to rotate. With this design, the second motor 18 can be installed away from wastewater.

[0040] The inner part of the water-blocking frame 20 is rotatably connected with a third screw rod 21, and the surface of the third screw rod 21 is coaxially fixedly connected with a first limit ring 22. The first limit ring 22 and the water-blocking frame 20 are rotatably connected. A threaded sleeve 23 is installed on the surface of the bottom plate 30. The threaded sleeve 23 movably passes through the bottom of the water-blocking frame 20, and the threaded sleeve 23 is coaxially threadedly connected with the third screw rod 21, so that the threaded sleeve 23 and the third screw 21 are threadedly connected. The third screw 21 cannot move in the water-blocking frame 20 under the restriction of the first limit ring 22. Then, by rotating the third screw 21, according to the threaded action between the third screw 21 and the threaded sleeve 23, the threaded sleeve 23 can move up and down, driving the bottom plate 30 to move up and down, thereby achieving the purpose of the bottom plate 30 being able to move up and down and connected to the bottom end of the water-blocking frame 20.

[0041] The surface of the buffer chamber 3 is rotatably connected with a linkage sleeve rod 31, and the surface of the linkage sleeve rod 31 is coaxially fixedly connected with a second limit ring 32. The second limit ring 32 and the buffer chamber 3 are rotatably connected. The linkage sleeve rod 31 movably passes through the top of the water-blocking frame 20, and the linkage sleeve rod 31 is connected to the coaxial sleeve of the third screw 21. The third screw 21 and the linkage sleeve rod 31 rotate synchronously. In a conventional arrangement, the third screw 21 and the linkage sleeve rod 31 are connected by a flat key to achieve synchronous rotation between the third screw 21 and the linkage sleeve rod 31 without affecting the third screw 2 1 and the linkage sleeve rod 31 move horizontally relative to each other, and by rotating the linkage sleeve rod 31, the third screw rod 21 is driven to rotate synchronously, so that the threaded sleeve rod 23 can move up and down. Through such an arrangement, the power equipment can be installed on the buffer chamber 3 as needed, away from the wastewater. In a conventional arrangement, since the water-blocking frame 20 needs to move up and down, the third screw rod 21 also needs to move up and down. Therefore, the length of the linkage sleeve rod 31 sleeved on the surface of the third screw rod 21 is to ensure that when the water-blocking frame 20 moves up and down, a part of the linkage sleeve rod 31 is always connected to the third screw rod 21.

[0042] The surface of the second screw rod 17 is coaxially fixedly connected with the second bevel gear 35, and the surface of the linkage sleeve rod 31 is coaxially fixedly connected with the first bevel gear 33. The first bevel gear 33 and the second bevel gear 35 are meshedly connected with a transmission shaft 34 for transmission. The transmission shaft 34 is rotatably connected with the buffer chamber 3. By arranging the second bevel gear 35, the transmission shaft 34, and the first bevel gear 33, the bevel gears at both ends of the transmission shaft 34 are respectively meshed with the second bevel gear 35 and the first bevel gear 33, so that when the second screw rod 17 rotates, the linkage sleeve rod 31 can be driven to rotate, so that only one power source of the second motor 18 needs to be installed, which is convenient to use. A linkage block 27 that can move up and down is installed at the bottom end of the bottom plate 30, and the bottom end of the threaded sleeve rod 23 is coaxially fixedly connected with the square block 24, and the surface of the linkage block 27 cooperates with the open A circular rotating groove 25 is provided for the square block 24 to rotate, and a square positioning groove 26 for the square block 24 to be embedded is provided on the surface of the linkage block 27. The circular rotating groove 25 is located directly above the square positioning groove 26. When the bottom plate 30 has not yet contacted the wastewater level in the sedimentation tank 1, the linkage block 27 moves downward so that the square block 24 is located in the circular rotating groove 25. At this time, if the third screw 21 rotates, since the square block 24 can rotate freely in the circular rotating groove 25, the threaded sleeve rod 23 will rotate with the third screw 21. In this way, even if the second screw 17 is used to drive the water-blocking frame 20 to move up and down, and at the same time, the linkage sleeve rod 31 rotates accordingly, the bottom plate 30 will not move downward. This is because the rotation of the square block 24 in the circular rotating groove 25 is not hindered, thereby avoiding unnecessary linkage;

[0043] When the bottom plate 30 contacts the wastewater level in the sedimentation tank 1, the linkage block 27 moves upward, prompting the square block 24 to move into the square positioning groove 26. At this time, the linkage block 27 limits the rotation of the square block 24 by virtue of the limiting effect of the square positioning groove 26, thereby limiting the rotation of the threaded sleeve 23. Therefore, when the third screw 21 rotates, it can only drive the threaded sleeve 23 to move downward along the axial direction, thereby causing the bottom plate 30 to move downward as well. Conventionally, by reasonably setting the winding direction of the third screw 21 and the second screw 17, it is ensured that the moving directions of the water-blocking frame 20 and the bottom plate 30 can be kept consistent, so as to meet the requirements of stable and efficient operation of the entire device.

[0044] Conventionally, the threaded sleeve 23 and the base plate 30 are rotatably connected, a third limit ring is coaxially fixedly connected to the surface of the threaded sleeve 23, and the third limit ring and the base plate 30 are rotatably connected, thereby ensuring that the base plate 30 and the threaded sleeve 23 move up and down synchronously.

[0045] The surface of the linkage block 27 is fixedly connected to the limit slider 36, and the surface of the bottom plate 30 is cooperated to open a third slide groove 28 for the limit slider 36 to move up and down. A return spring 29 is fixedly connected between the groove wall of the third slide groove 28 and the surface of the linkage block 27, so that the linkage block 27 automatically moves downward and resets under the elastic force of the return spring 29 without external force, so that the square block 24 is located in the circular rotating groove 25. It is worth noting that the ingenuity of this design lies in that when the linkage block 27 contacts the wastewater in the sedimentation tank 1, the buoyancy generated by the wastewater can prompt the linkage block 27 to automatically move upward, and when the linkage block 27 is away from the wastewater and the buoyancy disappears, the elastic force of the return spring 29 will play a leading role again and pull the linkage block 27 back to the bottom. Specifically, in the initial state, that is, When the bottom plate 30 has not yet contacted the wastewater surface in the sedimentation tank 1, driven by the elastic force of the reset spring 29, the linkage block 27 is in the lower position, ensuring that the square block 24 is located in the circular rotating groove 25. At this time, the threaded sleeve 23 can rotate freely with the third screw 21, and the bottom plate 30 will not move down accidentally. Once the bottom plate 30 contacts the wastewater surface, the buoyancy of the wastewater pushes the linkage block 27 to move upward, so that the square block 24 is embedded in the square positioning groove 26. At this time, the linkage block 27 limits the rotation of the threaded sleeve 23. Therefore, it is only necessary to start the second motor 18 to move the water-blocking frame 20 downward. After the bottom plate 30 falls below the wastewater surface in the sedimentation tank 1, the bottom plate 30 will naturally move downward due to the linkage to form a gap with the water-blocking frame 20. It is easy to use. According to needs, the linkage block 27 is a hollow structure.

[0046] Furthermore, there are multiple diversion ports 4, and the number of water supply components corresponds to the number of diversion ports 4. A first chute 5 is provided at the mouth wall of each diversion port 4, and a sealing plate 6 for opening and closing the corresponding diversion port 4 is slidably connected in each first chute 5. By setting up multiple water supply components, efficient operation of wastewater transportation is guaranteed. For example, when one of the water supply components is filled with wastewater and transported downward, the corresponding sealing plate 6 is used to close the diversion port 4, and another sealing plate 6 is moved to open the corresponding diversion port 4, so that the other water supply component can be loaded with wastewater, thereby achieving uninterrupted transportation.

[0047] The surface of the buffer chamber 3 is rotatably connected with the same number of first screws 7 as the sealing plates 6, and each first screw 7 is threadedly connected to a sealing plate 6 respectively. By rotating the first screw 7, the corresponding sealing plate 6 is horizontally moved, thereby opening and closing the diversion port 4. The surface of the buffer chamber 3 is rotatably connected with the same number of square rods 15 as the first screws 7, and each square rod 15 is coaxially aligned with a first screw 7. The surface of the buffer chamber 3 is connected with a horizontally movable gear bar 9, and each gear shaft 8 is meshed and connected with the gear bar 9. By moving the gear bar 9 horizontally back and forth, each gear shaft 8 is reversed. The surface of each gear shaft 8 is coaxially slidably connected with the square rod 15, and the end of each first screw 7 is coaxially matched to open a square slot for the square rod 15 to be embedded. When one of the sealing plates 6 needs to be moved, the corresponding square rod 15 is embedded in the corresponding square slot, so that the first screw 7 is connected to the gear shaft 8, and the rotation of the gear shaft 8 will drive the first screw 7 to rotate, thereby moving the corresponding sealing plate 6.

[0048] The surface of the buffer chamber 3 is provided with a second slide groove 10 for horizontal movement of the gear bar 9. The surface of the buffer chamber 3 is rotatably connected with a driving gear 11, which is meshed with the gear bar 9. The surface of the buffer chamber 3 is installed with a first motor 12, which is used to drive the driving gear 11 to rotate. The surface of the buffer chamber 3 is installed with the same number of electric push rods 13 as the square rods 15. The telescopic end of each electric push rod 13 is fixedly connected with a connecting shaft 14, and each connecting shaft 14 is coaxially rotatably connected with a square rod 15. The connecting shaft 14 is driven to move by starting the electric push rod 13 to extend and retract, and the movement of the connecting shaft 14 drives the square rod 15 to move.

[0049] The specific scheme is as follows: wastewater inlet preparation stage: wastewater flows into the buffer chamber 3 connected to the water inlet 2 through the water inlet 2 for wastewater to enter. The buffer chamber 3 can be designed as a top closed structure according to the situation to prevent wastewater from splashing and odor, ensuring that the wastewater is in a relatively stable environment before entering the subsequent treatment process, and then the wastewater falls into the water delivery component from the diversion port 4.

[0050] Wastewater conveying stage: start the second motor 18, the second motor 18 drives the second screw 17 to rotate, and since the second screw 17 is threadedly connected to the lifting block 19 fixed on the surface of the water-blocking frame 20, according to the principle of thread transmission, the lifting block 19 will move, thereby driving the water-blocking frame 20 to move downward;

[0051] As the water-blocking frame 20 moves downward, the water supply assembly as a whole approaches the wastewater level in the sedimentation tank 1. When the bottom plate 30 in the water supply assembly contacts the wastewater level in the sedimentation tank 1, the buoyancy generated by the wastewater pushes the linkage block 27 to move upward. The linkage block 27 moves upward so that the square block 24 moves into the square positioning groove 26. At this time, the linkage block 27 limits the rotation of the square block 24 by virtue of the limiting effect of the square positioning groove 26, thereby limiting the rotation of the threaded sleeve 23.

[0052] Continue to rotate the second screw 17 to move the water blocking frame 20 further downward. At the same time, since the second screw 17 is coaxially fixedly connected to the surface of the second bevel gear 35, the linkage sleeve 31 is coaxially fixedly connected to the surface of the first bevel gear 33, and the bevel gears at both ends of the transmission shaft 34 are respectively meshed with the second bevel gear 35 and the first bevel gear 33, the second screw 17 drives the linkage sleeve 31 to rotate when it rotates. Since the third screw 21 and the linkage sleeve 31 are conventionally connected by a flat key, the two rotate synchronously. Then, according to the threaded connection relationship between the third screw 21 and the threaded sleeve 23, and the synchronous up and down movement connection design of the threaded sleeve 23 and the bottom plate 30, the bottom plate 30 moves downward, thereby forming a gap between the bottom plate 30 and the bottom end of the water blocking frame 20.

[0053] Based on the principle of hydraulic difference, the wastewater inside the water delivery component is driven by pressure and flows out slowly and orderly from the preset gap, so that the liquid level of the wastewater inside the water delivery component is consistent with the liquid level of the wastewater in the sedimentation tank 1, and finally the wastewater is smoothly transported to the sedimentation tank 1, and then the water delivery component returns.

[0054] When it is necessary to switch the water delivery assembly for uninterrupted wastewater transportation, the first motor 12 is started to drive the driving gear 11 to rotate, and the driving gear 11 is meshed with the gear bar 9, driving the gear bar 9 to move horizontally. The gear bar 9 moves to rotate each gear shaft 8, and then the coaxial sliding connection between the gear shaft 8 and the square rod 15 and the matching connection relationship between the square rod 15 and the first screw 7 are utilized, that is, the square slot at the end of each first screw 7 is embedded and matched with the square rod 15, so that the corresponding first screw 7 is connected to the gear shaft 8, and the rotating gear shaft 8 drives the first screw 7 to rotate, so that the first screw 7 is controlled to be connected with the sealing plate 6, and only the corresponding sealing plate 6 is controlled to move. For example, when one of the water delivery assemblies is filled with wastewater and transported downward, the corresponding sealing plate 6 is used to close the diversion port 4, and the other sealing plate 6 is moved to open the corresponding diversion port 4, so that the other water delivery assembly can be loaded with wastewater, and this cycle is repeated to ensure efficient operation of wastewater transportation.

[0055] After the sedimentation is completed, the supernatant is introduced into the subsequent deep processing stage by pump as needed.

[0056] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic industry wastewater purification treatment device, comprising a sedimentation tank (1), characterized in that: The left side of the sedimentation tank (1) is provided with a water inlet (2) for wastewater to enter; the inner surface of the sedimentation tank (1) is fixedly connected to a buffer chamber (3) in communication with the water inlet (2); the bottom surface of the buffer chamber (3) is provided with a diversion port (4) for wastewater to flow out; the bottom of the buffer chamber (3) is fixedly connected to a support frame (16); a water supply component that can move up and down is installed on the surface of the support frame (16); the water supply component is used to receive wastewater flowing out of the diversion port (4) and transport it to the inner area of ​​the sedimentation tank (1); the water supply component includes a water-blocking frame (20) and a bottom plate (30); the bottom plate (30) is connected to the bottom end of the water-blocking frame (20) and can move up and down.

2. A photovoltaic industry wastewater purification device according to claim 1, characterized in that: The surface of the water-blocking frame (20) is fixedly connected to a lifting block (19), and the surface of the support frame (16) is rotatably connected to a vertically arranged second screw rod (17), the second screw rod (17) movably penetrates the surface of the lifting block (19), and the second screw rod (17) and the lifting block (19) are threadedly connected.

3. A photovoltaic industry wastewater purification device according to claim 2, characterized in that: The inner part of the water-blocking frame (20) is rotatably connected to a third screw rod (21), and the surface of the third screw rod (21) is coaxially fixedly connected to a first limiting ring (22). The first limiting ring (22) and the water-blocking frame (20) are rotatably connected. The surface of the bottom plate (30) is provided with a threaded sleeve (23), and the threaded sleeve (23) movably passes through the bottom of the water-blocking frame (20), and the threaded sleeve (23) is coaxially threadedly connected to the third screw rod (21).

4. A photovoltaic industry wastewater purification device according to claim 3, characterized in that: The surface of the buffer chamber (3) is rotatably connected to a linkage sleeve rod (31), and the surface of the linkage sleeve rod (31) is coaxially fixedly connected to a second limit ring (32). The second limit ring (32) and the buffer chamber (3) are rotatably connected. The linkage sleeve rod (31) movably passes through the top of the water-blocking frame (20), and the linkage sleeve rod (31) is connected to a third screw rod (21) coaxially sleeved thereon. The third screw rod (21) and the linkage sleeve rod (31) rotate synchronously.

5. A photovoltaic industry wastewater purification device according to claim 4, characterized in that: The surface of the second screw rod (17) is coaxially fixedly connected with a second bevel gear (35), the surface of the linkage sleeve rod (31) is coaxially fixedly connected with a first bevel gear (33), a transmission shaft (34) for transmission is meshingly connected between the first bevel gear (33) and the second bevel gear (35), the transmission shaft (34) is internally rotatably connected with the buffer chamber (3), a linkage block (27) movable up and down is installed at the bottom end of the bottom plate (30), the bottom end of the threaded sleeve rod (23) is coaxially fixedly connected with a square block (24), a circular rotating groove (25) for the square block (24) to rotate is formed on the surface of the linkage block (27), and a square positioning groove (26) for the square block (24) to be embedded is formed on the surface of the linkage block (27).

6. A photovoltaic industry wastewater purification device according to claim 5, characterized in that: The surface of the linkage block (27) is fixedly connected to a limit slider (36), and the surface of the bottom plate (30) is provided with a third slide groove (28) for the limit slider (36) to move up and down, and a return spring (29) is fixedly connected between the groove wall of the third slide groove (28) and the surface of the linkage block (27).

7. A photovoltaic industry wastewater purification device according to claim 6, characterized in that: The number of the diversion ports (4) is plural, the number of the water supply components corresponds to the number of the diversion ports (4) one by one, a first slide groove (5) is provided at the mouth wall of each diversion port (4), and a sealing plate (6) for opening and closing the corresponding diversion port (4) is slidably connected in each first slide groove (5).

8. A photovoltaic industry wastewater purification device according to claim 7, characterized in that: The surface of the buffer chamber (3) is rotatably connected to the same number of first screws (7) as the sealing plates (6), and each of the first screws (7) is threadedly connected to a sealing plate (6). The surface of the buffer chamber (3) is rotatably connected to the same number of square rods (15) as the first screws (7), and each square rod (15) is coaxially aligned with a first screw (7). The surface of the buffer chamber (3) is connected to a horizontally movable gear bar (9), and each of the gear shafts (8) is meshedly connected to the gear bar (9). The surface of each gear shaft (8) is coaxially slidably connected to the square rod (15), and the end of each of the first screws (7) is coaxially matched to form a square slot for the square rod (15) to be embedded.

9. A method for purifying wastewater for photovoltaic industry, characterized in that: The photovoltaic industry wastewater purification treatment device according to claim 8 is used, and the specific steps are as follows: A. The pretreated wastewater flows from the water inlet (2) into the buffer chamber (3), and then the wastewater falls into the water delivery component from the diversion port (4); B. Rotate the second screw rod (17) to drive the lifting block (19) to move downward, and the movement of the lifting block (19) drives the water blocking frame (20) to move downward; C. When the water delivery assembly moves downward, the bottom plate (30) as a whole enters the wastewater liquid level in the sedimentation tank (1), and the buoyancy generated by the wastewater pushes the linkage block (27) to move upward. The linkage block (27) moves upward so that the square block (24) moves into the square positioning groove (26), thereby limiting the rotation of the threaded sleeve (23); D. Continue to rotate the second screw rod (17) to move the water-blocking frame (20) further downward. At the same time, the second screw rod (17) drives the linkage sleeve rod (31) to rotate. The linkage sleeve rod (31) drives the third screw rod (21) to rotate. The rotation of the third screw rod (21) drives the threaded sleeve rod (23) to move downward. The movement of the threaded sleeve rod (23) drives the bottom plate (30) to move downward. A gap is formed between the bottom plate (30) and the bottom end of the water-blocking frame (20). The wastewater in the water supply assembly flows into the sedimentation tank (1) through the gap until the liquid level of the wastewater in the water supply assembly reaches the same level as the liquid level of the wastewater in the sedimentation tank (1). E. Return the water delivery component to repeat the wastewater delivery.

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