Power plant wastewater treatment and recovery device

Abstract

The invention belongs to the technical field of wastewater treatment, and particularly relates to a power plant wastewater treatment and recovery device which comprises a reservoir, and a water inlet pipe and a water outlet pipe are fixed to the side edge of the reservoir; the floating oil collecting assembly is arranged in the water storage tank and comprises a barrel, the top of the barrel is open, a floating plate is fixed to the outer side of the top of the barrel, the bottom of the barrel is fixedly connected with the tank body through a hydraulic cylinder, a negative pressure pipe is fixed to the bottom of the barrel, and the negative pressure pipe is connected with the hydraulic cylinder. The other end of the negative pressure pipe is connected with a negative pressure pump; the filtering assembly is arranged on the inner side of the top of the barrel body, and floating objects on the surface of the wastewater are separated through the filtering assembly; floating oil on the surface of wastewater is cleaned through the floating oil collecting assembly, floating objects on the surface of the wastewater are collected through the filtering assembly, and the situation that the negative pressure pipe is blocked by the floating objects, and the treatment efficiency is affected is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment, in particular to a power plant wastewater treatment and recovery device. Background Art

[0002] During the operation of thermal power plants, the oily wastewater generated poses a potential risk of environmental pollution, especially the floating oil component. The traditional wastewater treatment process usually includes floating oil treatment equipment, oil-water separation equipment and separation and purification equipment. The original design of these equipment is to effectively remove the oil in the wastewater, but in actual operation, there are still many technical problems in the collection and removal of floating oil.

[0003] The thickness and distribution of floating oil are affected by many factors. For example, changes in temperature and wastewater composition may cause uneven distribution of floating oil on the wastewater surface, posing a great challenge to its collection. In addition, the oily wastewater contains floating objects such as leaves, which will move closer to the collection port of the floating oil collector along with the floating oil, causing the floating oil collection port to be blocked, thereby affecting the collection efficiency of floating oil in the oily wastewater.

[0004] To this end, the present invention provides a power plant wastewater treatment and recovery device. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a power plant wastewater treatment and recovery device described in the present invention comprises:

[0007] A water reservoir, wherein a water inlet pipe and a water outlet pipe are respectively fixed to the sides of the water reservoir;

[0008] The floating oil collection assembly is arranged inside the water reservoir, and the floating oil collection assembly includes a cylinder, the top of the cylinder is open, a floating plate is fixed to the outside of the top of the cylinder, the bottom of the cylinder is fixedly connected to the tank body through a hydraulic cylinder, a negative pressure pipe is fixed to the bottom of the cylinder, and the other end of the negative pressure pipe is connected to a negative pressure pump;

[0009] The filter assembly is arranged on the inner side of the top of the cylinder body, and the floating objects on the surface of the wastewater are separated by the filter assembly.

[0010] Preferably, the filter assembly comprises an annular filter frame for collecting floating objects, and a plurality of groups of filter slots are evenly arranged on the filter frame.

[0011] Preferably, a support plate is fixed to the outer wall of the middle part of the cylinder, an annular side plate is provided on the outer side of the cylinder, the upper and lower ends of the side plate are respectively fixedly connected to the floating plate and the support plate, a collecting box is installed above the support plate, an opening is provided on the side plate, a filter is fixed on the side edges of the collecting box and the side plate that are in contact with each other, through grooves are symmetrically provided on the filter frame, a guide groove is fixed on the bottom of the through groove, through holes are provided on the side plate and the collecting box and located above the opening, an end of the guide groove away from the through groove is obliquely inserted into the through hole, an opening is provided on the side wall of the cylinder, and a pushing component is provided on the filter frame, by which floating objects in the filter frame are pushed to the through groove position.

[0012] Preferably, a rotating shaft is rotatably mounted on the floating plate via a one-way bearing, the top end of the rotating shaft extends above the floating plate and an impeller is fixed on the end, the bottom end of the rotating shaft extends downward to the middle of the gap between the cylinder and the side plate, and a cam is fixed on the rotating shaft, and the cam is adapted to the position of the filter.

[0013] Preferably, the pushing assembly includes a rotating ring, which is rotatably installed on the inner side of the filter frame, and scrapers are symmetrically fixed on the side walls of the rotating ring. A fixed rod is fixed in the middle of the top of the rotating ring, a rotating rod is fixed in the middle of the lower end surface of the fixed rod, and a cross bar is fixed in the middle of the cylinder body. The rotating rod vertically penetrates and is rotatably installed in the middle position of the cross bar, and the rotating shaft and the bottom end of the rotating rod are connected by a transmission chain.

[0014] Preferably, a movable ring is movably installed above the support plate, a plurality of groups of springs are symmetrically fixedly installed between the movable ring and the support plate, a clamping block is fixed at the top of the movable ring, a base is fixed at the bottom of the collecting box, a clamping slot is provided at the bottom end of the base, and the clamping block and the clamping slot are engaged with each other.

[0015] Preferably, the fixed rod, the rotating ring and the scraper are made of lightweight materials.

[0016] Preferably, grooves are symmetrically provided on the top of the floating plate, the grooves gradually narrow from the outside to the inside, and the impeller is arranged in the middle of the narrow end of the groove.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. A power plant wastewater treatment and recovery device described in the present invention is provided with a floating oil collection component to clean the floating oil on the surface of the wastewater, and a filtering component to simultaneously collect floating objects on the surface of the wastewater. When in use, the cylinder is driven downward by a hydraulic cylinder so that the upper end surface of the float plate slowly moves below the liquid surface. Under the action of pressure, the floating oil on the surrounding water surface flows toward the inside of the cylinder together with the wastewater, so that the floating oil on the water surface can be quickly collected. Afterwards, the floating oil and wastewater in the cylinder are discharged together through the cooperation of a negative pressure pump and a negative pressure pipe, so as to facilitate the rapid collection of floating oil. When the wastewater enters the cylinder, it first enters the filter frame, and the floating objects, wastewater and floating oil are separated through the filter holes in the filter frame, so as to prevent the floating objects from falling into the bottom of the cylinder and blocking the negative pressure pipe.

[0019] 2. The power plant wastewater treatment and recovery device described in the present invention is provided with a driving component and a collection box to clean the filter frame and avoid clogging of the filter frame. When in use, when the wastewater flows through the top of the floating plate, it drives the impeller to rotate, and the impeller drives the rotating shaft to rotate. The rotating shaft drives the rotating rod to rotate through the transmission chain, and then drives the rotating ring to rotate through the fixed rod. The rotating ring drives the scraper to move, and the scraper pushes the floating objects in the filter frame so that the floating objects move to the through groove position, and then fall into the collection box through the guide groove to be collected, so as to automatically collect the floating objects. At the same time, the rotation of the rotating shaft drives the cam below to rotate, so that the cam intermittently squeezes the filter screen, causing the filter screen to reciprocate, which can make the floating objects accumulated inside the collection box move, which is beneficial to discharge the wastewater inside the collection box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is an overall schematic diagram of the present invention;

[0022] Figure 2 is a schematic diagram of an oil spill collection assembly of the present invention;

[0023] Figure 3 It is a partial structural cross-sectional view of the present invention;

[0024] Figure 4 yes Figure 3 A partial enlarged view of the middle part;

[0025] Figure 5 It is a schematic diagram of the installation position of the collection box of the present invention.

[0026] In the figure: 1. water reservoir; 2. water inlet pipe; 3. water outlet pipe; 4. cylinder; 5. floating plate; 6. hydraulic cylinder; 7. negative pressure pipe; 8. groove; 9. filter frame; 10. filter tank; 11. support plate; 12. side plate; 13. collecting box; 14. through groove; 15. guide groove; 16. filter screen; 17. impeller; 18. rotating shaft; 19. cam; 20. opening; 21. transmission chain; 22. rotating rod; 23. opening; 24. fixing rod; 25. rotating ring; 26. scraper; 27. base; 28. movable ring; 29. ​​spring; 30. block; 31. slot. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0028] Embodiment 1: Figures 1 to 5 As shown, a power plant wastewater treatment and recovery device according to an embodiment of the present invention comprises:

[0029] A water reservoir 1, wherein a water inlet pipe 2 and a water outlet pipe 3 are respectively fixed to the sides of the water reservoir 1;

[0030] A floating oil collection assembly is arranged inside the water reservoir 1, and comprises a cylinder 4, the top of which is open, a floating plate 5 is fixed to the outside of the top of the cylinder 4, the bottom of the cylinder 4 is fixedly connected to the tank body through a hydraulic cylinder 6, a negative pressure pipe 7 is fixed to the bottom of the cylinder 4, and the other end of the negative pressure pipe 7 is connected to a negative pressure pump;

[0031] A filter assembly, the filter assembly is arranged on the inner side of the top of the cylinder, and floating objects on the surface of the wastewater are separated by the filter assembly;

[0032] During operation, a proper amount of oily wastewater is injected into the water reservoir 1 through the water injection pipe so that the liquid level is below the edge of the floating plate 5. Then, the telescopic end of the hydraulic cylinder 6 is controlled to contract, thereby driving the cylinder 4 to move downward, so that the upper end surface of the floating plate 5 slowly moves below the liquid level. Under the action of pressure, the floating oil on the surrounding water surface flows into the cylinder 4 together with the wastewater, so that the floating oil on the water surface can be quickly collected. According to the size of the water reservoir 1, multiple floating oil collection components can be set to work simultaneously to comprehensively collect the floating oil; then, the floating oil and wastewater inside the cylinder 4 are discharged together through the cooperation of the negative pressure pump and the negative pressure pipe 7, so as to facilitate the rapid collection of floating oil; then, the floating objects entering the cylinder 4 are separated and collected by the filtering component.

[0033] The filter assembly includes an annular filter frame 9 for collecting floating objects, and a plurality of filter slots 10 are evenly arranged on the filter frame 9. During operation, floating objects such as leaves may be contained on the liquid surface, and the floating objects may enter the cylinder 4 along with the floating oil, thereby causing the negative pressure pipe 7 to be blocked, affecting the collection efficiency. Therefore, by installing the filter frame 9 on the upper inner wall of the cylinder 4, the wastewater first enters the filter frame 9 when entering the cylinder 4, and the floating objects, wastewater and floating oil are separated through the filter holes in the filter frame 9, so as to prevent the floating objects from falling into the bottom of the cylinder 4 and blocking the negative pressure pipe 7.

[0034] A support plate 11 is fixed to the outer wall of the middle part of the cylinder 4, and an annular side plate 12 is provided on the outer side of the cylinder 4. The upper and lower ends of the side plate 12 are fixedly connected to the floating plate 5 and the support plate 11 respectively. A collecting box 13 is installed above the support plate 11, and an opening 20 is provided on the side plate 12. A filter screen 16 is fixed to the side of the collecting box 13 and the side plate 12 that are in contact with each other. Through grooves 14 are symmetrically provided on the filter frame 9, and a guide groove 15 is fixed to the bottom of the through groove 14. Through holes are provided on the side plate 12 and the collecting box 13 and located above the opening 20, and the guide groove 15 is obliquely inserted into the through hole at one end away from the through groove 14. An opening 23 is provided on the side wall of the cylinder 4, and the filter frame 9 is provided with a pushing component, by which the floating objects in the filter frame 9 are pushed to the position of the through groove 14; when working, the pushing component can move along the inside of the filter frame 9, and the floating objects collected in the filter frame 9 are driven by the pushing component to move to the position of the through groove 14, and then fall into the guide groove 15 below, and the floating objects in the guide groove 15 are introduced into the collection box 13, so that the filter frame 9 can be cleaned in time to avoid the floating objects clogging the filter groove 10 of the filter frame 9, thereby ensuring the separation effect of the filter frame 9; at the same time, part of the wastewater will be collected in the collection box 13 together with the floating objects, and the troublesome separation of the floating objects will be carried out by the filter screen 16, so as to avoid the accumulation of too much wastewater in the collection box 13, thereby affecting the use.

[0035] A rotating shaft 18 is rotatably mounted on the floating plate 5 through a one-way bearing, the top end of the rotating shaft 18 extends to the top of the floating plate 5 and an impeller 17 is fixed on the end, the bottom end of the rotating shaft 18 extends downward to the middle of the gap between the cylinder 4 and the side plate 12, and a cam 19 is fixed on the rotating shaft 18, and the cam 19 is adapted to the position of the filter screen 16; during operation, when wastewater flows through the top of the floating plate 5, the impeller 17 is synchronously pushed to rotate, and the rotating shaft 18 is driven to rotate by the impeller 17, thereby driving the cam 19 below to rotate, so that the cam 19 intermittently squeezes the filter screen 16, so that the filter screen 16 reciprocates, which can make the floating objects accumulated inside the collection box 13 move, and thus facilitate the discharge of the wastewater inside the collection box 13.

[0036] The pushing assembly includes a rotating ring 25, which is rotatably installed on the inner side of the filter frame 9, and a scraper 26 is symmetrically fixed on the side wall of the rotating ring 25. A fixed rod 24 is fixed in the middle of the top of the rotating ring 25, and a rotating rod 22 is fixed in the middle of the lower end surface of the fixed rod 24. A cross bar is fixed in the middle of the cylinder 4, and the rotating rod 22 vertically penetrates and is rotatably installed in the middle position of the cross bar. The rotating shaft 18 and the bottom end of the rotating rod 22 are connected by a transmission chain 21. During operation, when the rotating shaft 18 rotates, the rotating rod 22 is driven to rotate through the transmission chain 21, and then the rotating ring 25 is driven to rotate through the fixed rod 24, and the rotating ring 25 drives the scraper 26 to move, and the scraper 26 pushes the floating objects in the filter frame 9, so that the floating objects move to the position of the through groove 14, and then fall into the collection box 13 through the guide groove 15 to be collected, so as to automatically collect the floating objects.

[0037] The top of the support plate 11 is movably provided with a movable ring 28, and a plurality of groups of springs 29 are symmetrically fixedly provided between the movable ring 28 and the support plate 11. A block 30 is fixedly provided at the top of the movable ring 28, and a base 27 is fixedly provided at the bottom of the collecting box 13. A slot 31 is provided at the bottom end of the base 27, and the block 30 and the slot 31 are engaged with each other. When working, when installing the collecting box 13, the movable ring 28 is first pressed downward, and the spring 29 is compressed. Then the slot 31 at the lower end surface of the base 27 is engaged with the block 30 at the top of the movable ring 28. Then the movable ring 28 is released, and the collecting box 13 is pushed upward by the rebound action of the spring 29 until its top end abuts against the lower end surface of the floating plate 5, and the installation of the collecting box 13 is completed. When disassembling, the movable ring 28 is pressed downward again, and then the collecting box 13 can be removed. This facilitates the quick disassembly and assembly of the collecting box 13, and the disassembly and assembly efficiency is high. Then the detachable top plate of the collecting box 13 is opened, and it is convenient to clean the floating objects inside.

[0038] The fixed rod 24, the rotating ring 25 and the scraper 26 are made of light materials; when working, the weight of the fixed rod 24, the rotating ring 25 and the scraper 26 is reduced so that the power generated by the water force can drive the movement of the related structures.

[0039] Embodiment 2: Figure 3 As shown, compared with Example 1, another implementation of the present invention is: a groove 8 is symmetrically provided on the top of the floating plate 5, and the groove 8 gradually narrows from the outside to the inside, and the impeller 17 is arranged in the middle of the narrow end of the groove 8; when working, the flow rate of the wastewater flowing into the groove 8 is accelerated, thereby providing a greater force to drive the impeller 17 to rotate, so as to drive the movement of the related structure.

[0040] Working principle: inject a proper amount of oily wastewater into the water reservoir 1 through the water injection pipe so that the liquid level is below the edge of the floating plate 5, and then control the telescopic end of the hydraulic cylinder 6 to contract, thereby driving the cylinder 4 to move downward, so that the upper end surface of the floating plate 5 slowly moves below the liquid level, and under the action of pressure, the floating oil on the surrounding water surface flows into the cylinder 4 together with the wastewater, so that the floating oil on the water surface can be quickly collected, and then the floating oil and wastewater inside the cylinder 4 are discharged together through the negative pressure pump and the negative pressure pipe 7, so as to facilitate the rapid collection of floating oil; when the wastewater enters the cylinder 4, it first enters the filter frame 9, and the floating objects, wastewater and floating oil are separated through the filter holes in the filter frame 9, preventing the floating objects from falling into the bottom of the cylinder 4 and blocking the negative pressure pipe 7; in addition, when the wastewater is discharged from the filter frame 9, the floating objects, wastewater and floating oil are separated, so as to prevent ... When the water flows over the top of the floating plate 5, the impeller 17 is synchronously driven to rotate, and the impeller 17 drives the rotating shaft 18 to rotate. When the rotating shaft 18 rotates, the transmission chain 21 drives the rotating rod 22 to rotate, and then the fixed rod 24 drives the rotating ring 25 to rotate, and the rotating ring 25 drives the scraper 26 to move, and the scraper 26 pushes the floating objects in the filter frame 9, so that the floating objects move to the position of the through groove 14, and then fall into the collecting box 13 through the guide groove 15 to be collected, so as to automatically collect the floating objects. At the same time, the rotation of the rotating shaft 18 drives the cam 19 below to rotate, so that the cam 19 intermittently squeezes the filter screen 16, so that the filter screen 16 reciprocates, so that the floating objects accumulated inside the collecting box 13 can be moved, which is beneficial to discharge the wastewater inside the collecting box 13.

[0041] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations 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 orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A power plant wastewater treatment and recovery device, characterized in that: include: A water reservoir (1), wherein a water inlet pipe (2) and a water outlet pipe (3) are respectively fixed to the sides of the water reservoir (1); A floating oil collection assembly, the floating oil collection assembly is arranged inside a water storage tank (1), the floating oil collection assembly comprises a cylinder (4), the top of the cylinder (4) is open, a floating plate (5) is fixed to the outside of the top of the cylinder (4), the bottom of the cylinder (4) is fixedly connected to the tank body via a hydraulic cylinder (6), a negative pressure pipe (7) is fixed to the bottom of the cylinder (4), and the other end of the negative pressure pipe (7) is connected to a negative pressure pump; A filter assembly is arranged on the inner side of the top of the cylinder (4), and floating objects on the surface of the wastewater are separated by the filter assembly.

2. A power plant wastewater treatment and recovery device according to claim 1, characterized in that: The filter assembly comprises an annular filter frame (9) for collecting floating objects, and a plurality of groups of filter slots (10) are evenly arranged on the filter frame (9).

3. A power plant wastewater treatment and recovery device according to claim 2, characterized in that: A support plate (11) is fixed to the outer wall of the middle part of the cylinder (4), an annular side plate (12) is provided on the outer side of the cylinder (4), the upper and lower ends of the side plate (12) are respectively fixedly connected to the floating plate (5) and the support plate (11), a collecting box (13) is installed above the support plate (11), an opening (20) is provided on the side plate (12), a filter screen (16) is fixed to the side of the collecting box (13) and the side plate (12), and a filter frame (9) is symmetrically provided with a filter screen (16) and a filter screen (16) is fixed to the side of the collecting box (13) and the side plate (12). A through groove (14) is provided, a guide groove (15) is fixed at the bottom of the through groove (14), a through hole is provided on the side plate (12) and the collecting box (13) and located above the opening (20), an end of the guide groove (15) away from the through groove (14) is obliquely inserted into the through hole, an opening (23) is provided on the side wall of the cylinder (4), and a pushing component is provided in the filter frame (9), and the floating objects in the filter frame (9) are pushed to the position of the through groove (14) by the pushing component.

4. A power plant wastewater treatment and recovery device according to claim 3, characterized in that: A rotating shaft (18) is rotatably mounted on the floating plate (5) via a one-way bearing, the top end of the rotating shaft (18) extends to above the floating plate (5) and an impeller (17) is fixed on the end, the bottom end of the rotating shaft (18) extends downward to the middle of the gap between the cylinder (4) and the side plate (12), and a cam (19) is fixed on the rotating shaft (18), and the cam (19) is adapted to the position of the filter screen (16).

5. A power plant wastewater treatment and recovery device according to claim 4, characterized in that: The pushing assembly comprises a rotating ring (25), the rotating ring (25) is rotatably mounted on the inner side of the filter frame (9), a scraper (26) is symmetrically fixed on the side wall of the rotating ring (25), a fixed rod (24) is fixed in the middle of the top of the rotating ring (25), a rotating rod (22) is fixed in the middle of the lower end surface of the fixed rod (24), a cross bar is fixed in the middle of the cylinder (4), the rotating rod (22) vertically penetrates and is rotatably mounted in the middle position of the cross bar, and the rotating shaft (18) and the bottom end of the rotating rod (22) are connected by a transmission chain (21).

6. A power plant wastewater treatment and recovery device according to claim 5, characterized in that: A movable ring (28) is movably installed above the support plate (11), and a plurality of groups of springs (29) are symmetrically fixedly installed between the movable ring (28) and the support plate (11). A clamping block (30) is fixed at the top of the movable ring (28), and a base (27) is fixed at the bottom of the collection box (13). A clamping groove (31) is provided at the bottom end of the base (27), and the clamping block (30) and the clamping groove (31) are engaged with each other.

7. A power plant wastewater treatment and recovery device according to claim 6, characterized in that: The fixed rod (24), the rotating ring (25) and the scraper (26) are made of light materials.

8. A power plant wastewater treatment and recovery device according to claim 7, characterized in that: A groove (8) is symmetrically arranged on the top of the floating plate (5), and the groove (8) gradually narrows from the outside to the inside. The impeller (17) is arranged in the middle of the narrow end of the groove (8).

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