CN219279684U - Oily wastewater filtering device of thermal power plant - Google Patents

Abstract

The utility model relates to the technical field of thermal power plant wastewater treatment, in particular to an oily wastewater filtering device of a thermal power plant, which comprises a frame and a wastewater filtering barrel, wherein the wastewater filtering barrel is rotationally connected with the frame through a rotary supporting structure, a liquid injection port is arranged at the top of the wastewater filtering barrel, a plurality of water filtering holes are formed in the wall of the wastewater filtering barrel, a water-oil separation device is arranged in the wastewater filtering barrel, and a water collecting device is arranged below the wastewater filtering barrel; according to the utility model, the filtered thermal power plant wastewater is injected into the wastewater filter cartridge, the oil liquid is filtered and intercepted by the water-oil separation device, the wastewater filter cartridge rotates around the axis of the wastewater filter cartridge, oil-water separation is carried out by adopting a centrifugal method, and the oil liquid is retained in the wastewater filter cartridge.

Description

Oily wastewater filtering device of thermal power plant

Technical Field

The utility model relates to the technical field of thermal power plant wastewater treatment, in particular to an oily wastewater filtering device of a thermal power plant.

Background

The large-scale thermal power plant is a main source of electric power in China and is one of main pollution sources, in terms of green development, environmental protection and energy conservation and emission reduction are more dependent on a wastewater treatment mode of a thermal power plant, wherein the main source of oily wastewater in the power plant is mainly wastewater of equipment such as an oil storage tank, a pump house and ground cleaning, the main pollution sources in the wastewater are oil substances and suspended matters, the treatment of the oily wastewater is mainly carried out in modes such as oil separation, adsorption, filtration and air floatation, the collected oil substances are treated and recovered, the treated wastewater can be recycled or discharged, the operation of the wastewater filtering device is needed in the process, the wastewater filtering device based on the thermal power plant is disclosed as an authorized bulletin No. CN215653986U, and comprises a filtering cylinder, a control box and a filtering material port, wherein the control box is fixedly connected to the right side of the filtering cylinder, the filtering material port is arranged on the left side of the filtering cylinder, the top of the right side of the filtering cylinder is fixedly connected with a working box, and the inside of the working box is fixedly connected with a driving motor, so that the filtering material is required to be manually replaced by means of the bottom of the filtering cylinder after the filtering device is used for a long time.

However, when the above technical scheme is used for filtering wastewater, the natural flow of wastewater and filter materials is mainly used for filtering and removing the waste materials, the oily substances in the wastewater are easily discharged together with the wastewater in the operation process, the filtering effect is poor, the use requirement is difficult to meet, in addition, the wastewater is usually required to be subjected to multiple-time and multiple-time filtering treatment and discharged into a sedimentation tank, then agents such as a dehydration auxiliary agent, a demulsifier and the like are manually added into the sedimentation tank, and the agents are uniformly mixed by a mixing device, so that the operation treatment cost of the wastewater is increased by using the mixing device.

Disclosure of Invention

The utility model aims to provide an oily wastewater filtering device of a thermal power plant, which aims to solve the problem that the filtering effect of wastewater is poor because oil substances in the wastewater are discharged together with the wastewater during the filtering operation in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides an oily waste water filter equipment of thermal power plant, includes frame and waste water cartridge filter, the waste water cartridge filter rotates with the frame through rotatory bearing structure and is connected, the tip of waste water cartridge filter sets up annotates the liquid mouth, a plurality of drainage holes have been seted up on the section of thick bamboo wall of waste water cartridge filter, the inside of waste water cartridge filter sets up water oil separator, the below of waste water cartridge filter sets up water collector.

Further, the water-oil separation device comprises an oil-water separation filter membrane, and the oil-water separation filter membrane is paved on the inner wall of the wastewater filter cartridge.

Further, the oil-water separation filter membrane is a polyethersulfone ultrafiltration membrane or a polyvinylidene fluoride ultrafiltration membrane.

Further, a conveying pipeline is arranged below the water collecting device, a transition pipe is arranged at the bottom of the water collecting device, the water collecting device is communicated with a liquid inlet of the conveying pipeline through the transition pipe, and a liquid outlet of the conveying pipeline is provided with a medicament pretreatment device.

Further, the medicament pretreatment device comprises an auger roller and a stirring driving device, wherein the auger roller is arranged inside the conveying pipeline along the axial direction of the conveying pipeline, a medicament inlet is formed in the auger roller of the conveying pipeline, and the auger roller is rotationally connected with the stirring driving device.

Further, the rotary support structure comprises a gear rotary mechanism comprising intermeshing sprockets and links, the links being circumferentially disposed on the outer wall of the waste water filter cartridge, the sprockets being rotatably connected to the frame by bearings.

Further, the rotary supporting structure further comprises a rotary driving mechanism, the rotary driving mechanism comprises a gear motor, a belt transmission structure and a transverse shaft, the gear motor is arranged at one end of the frame, an output shaft of the gear motor is connected with one end of the transverse shaft through the belt transmission structure, the other end of the transverse shaft is fixed with a chain wheel, the gear motor drives the transverse shaft to rotate through the belt transmission structure, the transverse shaft drives the chain wheel to rotate, and the chain wheel drives the chain ring and the waste water filter cylinder to rotate.

Further, the rotary supporting structure further comprises a barrel supporting structure, the barrel supporting structure comprises a supporting seat and rollers, the supporting seat is arranged on the upper end face of the frame, the rollers are arranged at the top of the supporting seat, and the rollers are abutted to the barrel walls of the wastewater filtering barrel.

Further, an outer support ring is arranged on the wall of the wastewater filter cylinder along the circumferential direction, and the outer support ring is in butt joint with the roller.

Compared with the prior art, the utility model has the beneficial effects that:

(1) Through setting up the waste water cartridge filter that is connected through rotatory bearing structure with the frame, offer the drainage hole on the waste water cartridge filter section of thick bamboo wall, and set up the water oil separator in the waste water cartridge filter, pour into the thermal power plant waste water of filtration treatment into the waste water cartridge filter, utilize the water oil separating filter membrane to filter and intercept fluid, simultaneously through rotatory bearing structure drive waste water cartridge filter rotatory, utilize the principle that water is heavier than oil, adopt high-speed centrifugation to make water oil separating, fluid is detained in the waste water cartridge filter, compare in the filter equipment in the past, effectively improve the filtration efficiency of device to thermal power plant waste water and filtration efficiency; the water-oil separation device is preferably an oil-water separation filter membrane, the inner wall of the oil-water separation filter membrane is paved on the inner wall of the waste water filter cartridge, the filtering precision of the oil-water separation filter membrane is high, the model of the oil-water separation filter membrane can be matched according to the property of oil-containing waste water materials, and meanwhile, the membrane structure can be better adapted to the shape of the waste water filter cartridge.

(2) The filtered waste water of the thermal power plant enters into a conveying pipeline, a chemical pretreatment device is arranged at a liquid outlet of the conveying pipeline, the chemical pretreatment device comprises a packing auger roller, a chemical inlet is formed in the packing auger roller by the conveying pipeline, chemicals such as a dehydration aid and a demulsifier are injected into the packing auger roller, the waste water and the chemicals are mixed and uniformly stirred, and the mixed waste water is discharged into a sedimentation tank to be directly precipitated, so that a subsequent mixing device is omitted, the treatment cost of the waste water of the thermal power plant is effectively reduced, meanwhile, sedimentation of the waste water in the later stage is facilitated, and the sedimentation time is saved.

Drawings

FIG. 1 is a schematic diagram of a front view of the present utility model;

FIG. 2 is a schematic side view of the present utility model;

FIG. 3 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;

FIG. 4 is a schematic diagram of a front view of a wastewater filter cartridge of the present utility model;

FIG. 5 is a schematic perspective view of a sprocket according to the present utility model;

in the figure: 1. a frame; 2. a support base; 3. a roller; 4. a waste water filter cartridge; 401. an outer support ring; 402. a liquid injection port; 403. a water filtering hole; 404. a chain ring; 405. an oil-water separation filter membrane; 5. a water collecting device; 501. a transition pipe; 6. a delivery conduit; 601. auger rollers; 602. a one-way valve; 7. a motor base; 8. a speed reducing motor; 801. a coupling; 802. a belt drive structure; 9. a bearing seat; 10. a horizontal axis; 11. a sprocket.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

Referring to fig. 1-5, the utility model provides an oily wastewater filtering device of a thermal power plant, which comprises a frame 1, wherein a wastewater filtering cylinder 4 is installed at the top end of the frame 1, the wastewater filtering cylinder 4 is rotationally connected with the frame 1 through a rotary supporting structure, the frame 1 and the wastewater filtering cylinder 4 are both arranged along the horizontal direction, and the rotary supporting structure comprises a cylinder supporting structure, a gear rotating mechanism and a rotary driving mechanism: the gear rotating structure is arranged between the frame 1 and the waste water filtering cylinder 4 and is used for driving the waste water filtering cylinder 4 to rotate; the rotary driving mechanism is arranged at one end of the frame 1, and the rotary driving assembly drives the gear rotary structure to work through the belt transmission structure 802 so as to drive the wastewater filter cartridge 4 to axially rotate around the wastewater filter cartridge; the barrel bearing structure is used for providing supporting effect to the rotation of waste water cartridge filter 4, promotes the stability of device operation.

As shown in fig. 4, the structure of the waste water filtering cylinder 4 is that one end of the waste water filtering cylinder 4 is provided with a liquid injection port 402, the cylinder wall of the waste water filtering cylinder 4 is provided with a plurality of water filtering holes 403 distributed in a ring shape along the outer peripheral surface, and the inner wall of the cylinder wall of the waste water filtering cylinder 4 is paved with an oil-water separation filter membrane 405; a water collecting device 5 is arranged at the top end of the frame 1 below the wastewater filtering cylinder 4; the thermal power plant wastewater to be filtered is injected into the wastewater filtering cylinder 4 through the liquid injection port 402, the oil-water separation filter membrane 405 can intercept oil liquid as a water-oil separation device, and the water in the wastewater is filtered through the centrifugal effect generated by the rotation of the wastewater filtering cylinder 4 by separating the water from the oil liquid, and the filtered water is discharged from the water filtering holes on the wall of the wastewater filtering cylinder 4; the type of the oil-water separation filter membrane can be matched according to the property of the oily wastewater material of the thermal power plant, the oil-water separation filter membrane 405 in the utility model is preferably a polyether sulfone ultrafiltration membrane (PES ultrafiltration membrane) or a polyvinylidene fluoride ultrafiltration membrane (PVDF ultrafiltration membrane), the two membranes have high filtration precision, the interception effect on oil liquid is better, the water quality obtained after filtration is better, and the membrane structure of the oil-water separation filter membrane can be better adapted to the shape and the area of a wastewater filter cartridge.

The water collecting device 5 in the utility model is an arc plate as shown in fig. 1, and can be further improved, a barrel cover is arranged outside the wastewater filtering barrel 4, or the wastewater filtering barrel 4 is provided with a sleeve structure comprising an outer barrel and an inner barrel, the barrel cover and the outer barrel are used for collecting the filtering water rotationally separated from the wastewater filtering barrel 4, preventing the filtering water rotationally centrifuged from splashing everywhere, and the collected water is conveyed to the water collecting device 5;

the bottom of the water collecting device 5 is provided with a transition pipe 501 and a conveying pipeline 6, the water collecting device 5 is communicated with a liquid inlet of the conveying pipeline 6 through the transition pipe 501, water phase in wastewater enters the water collecting device 5 through a water filtering hole 403 of the wastewater filtering barrel 4 and enters the conveying pipeline 6 through the transition pipe 501 for conveying, and the conveying pipeline 6 conveys the wastewater after degreasing to a sedimentation tank; a one-way valve 602 is arranged at a liquid inlet of the conveying pipeline 6, a medicament pretreatment device is arranged at a liquid outlet of the conveying pipeline 6, the medicament pretreatment device comprises a packing auger roller 601 and a stirring driving device, the packing auger roller 601 is arranged inside the conveying pipeline 6 along the axial direction of the conveying pipeline 6, the packing auger roller 601 rotates inside the conveying pipeline 6, the conveying pipeline 6 is provided with a medicament inlet at the packing auger roller 601, the medicament inlet is connected with pumping ends of medicaments such as external dehydration aids, demulsifiers and the like, the dewatering aids, demulsifiers and the like are used for injecting the dehydration aids, the demulsifiers and the like at the tail end of the conveying pipeline 6, the packing auger roller 601 is rotationally connected with the stirring driving device, and the packing auger roller 601 is used for stirring the medicaments added into wastewater in the conveying pipeline 6, so that the medicaments are fully mixed with oil in the wastewater to be condensed, and flocculates in the wastewater are convenient to settle in a settling pond; the outer wall of one end of the frame 1 is provided with a stirring driving device for driving the auger roller 601 to rotate.

The barrel supporting structure is shown in fig. 2, and comprises a supporting seat 2 and rollers 3, wherein the supporting seat 2 is relatively arranged on two sides of the top of the frame 1, the rollers 3 are rotatably arranged at the top end of the supporting seat 2, outer supporting rings 401 which are mutually abutted with the rollers 3 are arranged at two ends of the surface of the wastewater filtering cylinder 4, and the rotation stability of the wastewater filtering cylinder 4 is improved through the arrangement of the supporting seat 2, the rollers 3 and the outer supporting rings 401 in the rotation process of the wastewater filtering cylinder 4;

the toothed chain rotating structure is shown in fig. 3, and comprises a chain ring 404 and a chain wheel 11 shown in fig. 5, wherein a transverse shaft 10 is arranged in the chain wheel 11, the transverse shaft 10 and the chain wheel 11 are rotatably arranged at the top of the frame 1 through a bearing seat 9, the axial direction of the transverse shaft 10 is parallel to the axial direction of the waste water filter cartridge 4, the chain ring 404 is arranged along the circumferential direction of the outer wall of the waste water filter cartridge 4, the chain ring 404 is meshed with the chain wheel 11, one end of the transverse shaft 10, which is far away from the bearing seat 9, is connected with a rotary driving assembly through a belt transmission structure 802, the transverse shaft 10 and the chain wheel 11 are driven by the rotary driving assembly together, and the chain ring 404 and the waste water filter cartridge 4 are driven to rotate by the chain wheel 11;

the rotary driving assembly is shown in combination with fig. 1, 2 and 3, and comprises a gear motor 8, a belt transmission structure 802 and a transverse shaft 10, wherein one end of the frame 1 is provided with a motor seat 7, the gear motor 8 is arranged on the motor seat 7, the output end of the gear motor 8 is in transmission with the transverse shaft 10 through the belt transmission structure 802, the belt transmission structure 802 comprises a driving wheel arranged on the output shaft of the gear motor 8 and a driven wheel arranged at one end of the transverse shaft 10 far away from the bearing seat 9, and the driving wheel and the driven wheel are in transmission through multi-wedge belt connection;

meanwhile, the gear motor 8 is also used as a stirring driving device, the output end of the gear motor 8 is connected with one end of the auger roller 601 through the coupler 801, when the conveying pipeline 6 at the auger roller 601 is filled with agents such as a dehydration assistant and a demulsifier, the auger roller 601 can mix and uniformly mix the wastewater and the agents, and the mixed wastewater is directly precipitated in a precipitation tank, so that a subsequent mixing device is omitted.

When the gear motor 8 is started, the rotary driving assembly drives the cross shaft 10 to rotate through the belt transmission structure 802, the cross shaft 10 drives the wastewater filtering cylinder 4 to rotate through the toothed chain rotary structure, the wastewater filtering cylinder 4 rotates around the axis of the wastewater filtering cylinder 4, and meanwhile, the output end of the gear motor 8 drives the auger roller 601 to rotate, so that wastewater and medicaments are mixed and uniformly mixed.

When the method is used, firstly, a worker injects thermal power plant waste water to be filtered into the waste water filter cartridge 4 through the liquid injection port 402, the worker starts the gear motor 8 to work, the gear motor 8 drives the transverse shaft 10 to rotate through the coupler 801 and the belt transmission structure 802, the transverse shaft 10 drives the waste water filter cartridge 4 to rotate through the toothed chain rotating structure, at the moment, the waste water filter cartridge 4 rotates around the axis of the waste water filter cartridge 4, thermal power plant waste water in the waste water filter cartridge 4 is subjected to centrifugal treatment, the principle that water is heavier than oil is utilized, oil-water separation is carried out by adopting a high-speed centrifugal method, meanwhile, the oil-water separation filter membrane 405 intercepts oil liquid, so that water is communicated with the water filtering water hole 403 to enter the water collecting device 5, and enters the conveying pipeline 6 through the transition pipe 501, the oil liquid is in the waste water filter cartridge 4, the oil-water separation filter membrane 405 adopts a polyether sulfone ultrafiltration membrane (PES ultrafiltration membrane) or a polyvinylidene fluoride ultrafiltration membrane (PVDF ultrafiltration membrane), and the two preferable filter membranes have good interception effects on the oil liquid, and the water quality obtained after filtration is better compared with the traditional filtering device, the filtering efficiency of the thermal power plant waste water is effectively improved;

the filtered thermal power plant waste water enters the conveying pipeline 6, and as the gear motor 8 is connected with the auger roller 601 through the coupler 801, the dewatering auxiliary agent, the demulsifier and other agents are injected into the conveying pipeline 6 from the agent inlet, when the dewatering auxiliary agent, the demulsifier and other agents are injected, the auger roller 601 is used for mixing and uniformly mixing the waste water and the agents, and the mixed waste water is discharged into the sedimentation tank for direct sedimentation, so that a mixing device is omitted, the treatment cost of the thermal power plant waste water is effectively reduced, and the sedimentation time is saved.

Claims (9)

1. An oily wastewater filtering device of a thermal power plant, which is characterized in that: including frame (1) and waste water cartridge filter (4), waste water cartridge filter (4) are connected with frame (1) rotation through rotary support structure, the tip of waste water cartridge filter (4) sets up annotates liquid mouth (402), a plurality of drainage holes (403) have been seted up on the section of thick bamboo wall of waste water cartridge filter (4), the inside of waste water cartridge filter (4) sets up water oil separator, the below of waste water cartridge filter (4) sets up water collector (5).

2. The oily wastewater filtering device of a thermal power plant according to claim 1, wherein: the water-oil separation device comprises an oil-water separation filter membrane (405), and the oil-water separation filter membrane (405) is paved on the inner wall of the wastewater filter cartridge (4).

3. The oily wastewater filtering device of a thermal power plant according to claim 2, wherein: the oil-water separation filter membrane (405) is a polyethersulfone ultrafiltration membrane or a polyvinylidene fluoride ultrafiltration membrane.

4. The oily wastewater filtering device of a thermal power plant according to claim 1, wherein: the water collecting device is characterized in that a conveying pipeline (6) is arranged below the water collecting device (5), a transition pipe (501) is arranged at the bottom of the water collecting device (5), the water collecting device (5) is communicated with a liquid inlet of the conveying pipeline (6) through the transition pipe (501), and a medicament pretreatment device is arranged at a liquid outlet of the conveying pipeline (6).

5. The oily wastewater filtering device of a thermal power plant according to claim 4, wherein: the medicament pretreatment device comprises an auger roller (601) and a stirring driving device, wherein the auger roller (601) is arranged inside a conveying pipeline (6) along the axial direction of the conveying pipeline (6), a medicament inlet is formed in the auger roller (601) of the conveying pipeline (6), and the auger roller (601) is rotationally connected with the stirring driving device.

6. The oily wastewater filtering device of a thermal power plant according to claim 5, wherein: the rotary supporting structure comprises a gear rotary mechanism, the gear rotary mechanism comprises a sprocket wheel (11) and a chain ring (404) which are meshed with each other, the chain ring (404) is circumferentially arranged on the outer wall of the waste water filter cartridge (4), and the sprocket wheel (11) is rotationally connected with the frame (1) through a bearing.

7. The oily wastewater filtering device of a thermal power plant according to claim 6, wherein: the rotary supporting structure further comprises a rotary driving mechanism, the rotary driving mechanism comprises a gear motor (8), a belt transmission structure (802) and a transverse shaft (10), the gear motor (8) is arranged at one end of the frame (1), an output shaft of the gear motor (8) is connected with one end of the transverse shaft (10) through the belt transmission structure (802), the other end of the transverse shaft (10) is fixed with a sprocket (11), the gear motor (8) drives the transverse shaft (10) to rotate through the belt transmission structure (802), the transverse shaft (10) drives the sprocket (11) to rotate, and the sprocket (11) drives the chain ring (404) and the waste water filter cartridge (4) to rotate.

8. The oily wastewater filtering device of a thermal power plant according to claim 7, wherein: the rotary supporting structure further comprises a barrel supporting structure, the barrel supporting structure comprises a supporting seat (2) and a roller (3), the supporting seat (2) is arranged on the upper end face of the frame (1), the roller (3) is arranged at the top of the supporting seat (2), and the roller (3) is in butt joint with the barrel wall of the wastewater filtering barrel (4).

9. The oily wastewater filtering device of a thermal power plant of claim 8, wherein: an outer supporting ring (401) is arranged on the wall of the wastewater filtering cylinder (4) along the circumferential direction, and the outer supporting ring (401) is abutted with the roller (3).

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