CN113499629B - Domestic sewage treatment device for realizing separation of solid, liquid and oil - Google Patents
Domestic sewage treatment device for realizing separation of solid, liquid and oil Download PDFInfo
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- CN113499629B CN113499629B CN202110828572.9A CN202110828572A CN113499629B CN 113499629 B CN113499629 B CN 113499629B CN 202110828572 A CN202110828572 A CN 202110828572A CN 113499629 B CN113499629 B CN 113499629B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/003—Filters in combination with devices for the removal of liquids
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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Abstract
The invention relates to the technical field of domestic sewage treatment devices, in particular to a domestic sewage treatment device for realizing separation of solid, liquid and oil. The one end of inlet pipe extends to the lower part of the jar body from the upper end middle part of the jar body, the other end of inlet pipe is connected with the liquid storage tank of storing domestic sewage, the one end of pipette extends to a jar body middle part from the upper portion of the jar body, be equipped with first suction mechanism on the other end of pipette, the outside of inlet pipe is equipped with concentric pipe, concentric pipe is connected with the inside rotation of the jar body, and the part that concentric pipe is located the end cover outside is equipped with rotary mechanism, concentric pipe is located and is equipped with solid-liquid separation mechanism and fluid separating mechanism on the lateral surface of jar internal portion. The technical scheme is used for solving the problems that in the prior art, a filter hole of a solid-liquid separation device is easy to block, and oil liquid in domestic sewage cannot be separated, so that the treatment effect of a subsequent sewage treatment device is poor, and the problem of resource waste due to recycling is caused.
Description
Technical Field
The invention relates to the technical field of domestic sewage treatment devices, in particular to a domestic sewage treatment device for realizing separation of solid, liquid and oil.
Background
Domestic sewage is wastewater discharged in daily life of residents and mainly comes from residential buildings and public buildings, such as houses, institutions, schools, hospitals, shops, public places, industrial enterprise toilets and the like. The pollutants contained in the domestic sewage are mainly organic matters (such as protein, carbohydrate, fat, urea, ammonia nitrogen and the like) and a large amount of pathogenic microorganisms (such as parasitic ova, enteroinfectious viruses and the like). Organic matters existing in domestic sewage are extremely unstable and easily decomposed to generate offensive odor. Bacteria and pathogens propagate in large quantities by taking organic matters in domestic sewage as nutrition, and can cause epidemic of infectious diseases. Therefore, domestic sewage must be treated before being discharged.
Because impurity is more among the current domestic sewage, need filter domestic sewage before discharging to sewage treatment plant, avoid the solid impurity in the domestic sewage to cause sewage treatment plant to block up, but solid-liquid separation equipment among the prior art is when filtering, it is easy to block up to cross the filtration pore, cause the problem that the filter effect is low and awkward, solid-liquid separation equipment among the prior art can not separate the fluid in the domestic sewage simultaneously, lead to sewage treatment plant's treatment effect poor, and can not carry out the utilization of resources to fluid, cause the problem of wasting of resources.
Disclosure of Invention
In view of the above technical shortcomings, the present invention provides a domestic sewage treatment device for separating solid from liquid, and aims to solve the problems that in the prior art, a filter hole of a solid-liquid separation device is easy to be blocked, and the oil in the domestic sewage cannot be separated, which results in poor treatment effect of a subsequent sewage treatment device, and waste of recyclable resources.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a domestic sewage treatment device for realizing the separation of solid, liquid and oil comprises a tank body, wherein an end cover is arranged at the upper end of the tank body, a discharging mechanism is arranged at the lower end of the tank body, a feeding pipe is arranged in the middle of the tank body, one end of the feeding pipe extends to the lower part of the tank body from the middle of the upper end of the tank body, the other end of the feeding pipe is connected with a liquid storage pool for storing domestic sewage, a liquid suction pipe is further arranged in the tank body, one end of the liquid suction pipe extends to the middle of the tank body from the upper part of the tank body, a first suction mechanism is arranged at the other end of the liquid suction pipe, a concentric pipe is arranged on the outer side of the feeding pipe and is rotationally connected with the inside of the tank body, a rotating mechanism is arranged at the part of the concentric pipe, which is positioned outside the end cover, a solid-liquid separation mechanism and an oil separation mechanism are arranged on the outer side surface of the inside of the tank body, the domestic sewage treatment device is used for separating solid and liquid in domestic sewage, and the oil-liquid separation mechanism is used for absorbing oil liquid floating on the upper surface of the liquid after solid-liquid separation.
The working principle of the technical scheme is as follows:
the inlet pipe pours into the bottom of the jar body with domestic sewage, under solid-liquid apparatus's effect, realize solid and the liquid separation in the domestic sewage, liquid is to the top motion of the jar body, the light in weight of fluid this moment, can float in the top of liquid level, the pipette begins the suction to the liquid of jar body lower part this moment, what the suction was gone out is the liquid that does not contain fluid, fluid separation frame mechanism aspirates the fluid of fluid level top, solid has been realized promptly, separation between liquid and the fluid three, be convenient for follow-up sewage, the independent processing and the utilization of solid and fluid.
Further inject, rotary mechanism includes rotating electrical machines, driven gear and driving gear, rotating electrical machines is fixed in on the end cover, driven gear is fixed in on the concentric tube, the driving gear is fixed in on the output of rotating electrical machines, driven gear and driving gear meshing are connected, and its beneficial effect lies in, drives the rotation of concentric tube through rotating electrical machines, simple structure.
Further limiting, the first suction mechanism comprises a sewage treatment device and a first water pump, the water suction end of the water pump is connected with the liquid suction pipe, the water outlet end of the water pump is connected with the water inlet of the sewage treatment device, and the first suction mechanism has the advantages that water is sucked by the first water pump, liquid filtered out from the tank body is sucked into the sewage treatment device for treatment, and the sewage treatment device can realize filtering and sewage treatment at the same time.
Further inject, be equipped with the mount between concentric tube and the jar body, the edge of mount is fixed in on the medial surface of the jar body, the middle part of mount is equipped with antifriction bearing, concentric tube and antifriction bearing's inner circle fixed connection, its beneficial part lies in, mount and antifriction bearing's setting makes concentric tube fix in the jar body simultaneously, still makes concentric tube realize rotatoryly.
Further limiting, the solid-liquid separation mechanism comprises a baffle, a first filter plate and a second filter plate, a plurality of filter holes with the same shape, size and position are arranged on the first filter plate and the second filter plate, the baffle is fixedly connected to the bottom of the concentric tube, the first filter plate is arranged on the upper part of the baffle, the edge of the first filter plate is in sliding connection with the inner wall of the tank body, the first filter plate can slide up and down on the outer wall of the concentric tube, the second filter plate is arranged above the first filter plate, the middle part of the second filter plate is in telescopic connection with the concentric tube, the solid-liquid separation mechanism has the advantages that the concentric tube is driven to rotate by the rotating motor, the second filter plate can be driven to rotate, when the second filter plate rotates on the first filter plate, the filter holes on the second filter plate and the second filter plate are in an overlapped state, and the size of the filter holes can be changed, one side can adjust the filtering precision of the device, on the other hand, when the filtering holes formed by the second filtering plate and the first filtering plate are blocked, only the second filtering plate needs to be rotated, the filtering holes formed between the first filtering plate and the second filtering plate are enlarged, the blocking object can move downwards under the action of gravity, thereby removing the state that the filtering holes are blocked, meanwhile, when the domestic sewage is continuously added into the tank body by the inlet pipe, because the solid is accumulated at the bottom of the tank body, under the long-time action, the height of the accumulated solid is increased, a pressure can be formed between the solid and the first filtering plate, the solid is easily extruded into the filtering holes, so that the inner side sliding connection of the first filtering plate and the tank body is realized, namely, the first filtering plate and the second filtering plate can move upwards under the action of the solid extrusion, thereby reducing the extrusion acting force, and enabling the filtering holes not to be blocked easily, the solid accumulation volume at the bottom of the tank body can be increased.
Further inject, the top of second filter is equipped with expanding spring, the concentric tube is located expanding spring's inside, expanding spring's one end and concentric tube fixed connection, expanding spring's the other end and second filter fixed connection for support the second filter tightly on first filter, its useful part lies in, the spring has flexible efficiency, can satisfy the up-and-down motion of first filter and second filter, and simultaneously, the spring can also support the second filter tightly on first filter, make the two time installation clearance can not appear, the solid of having avoided in the sewage gets into between the two, cause the poor problem of filter effect, and is further, the spring stretches out and draws back from top to bottom, can form the shake, thereby discharge the plug in the filter hole.
Further inject, the fluid separation mechanism includes oil suction pipe, second water pump and oil storage tank, the oil suction pipe is spiral, and the oil suction pipe is equipped with a plurality of oil suction holes inclined downwards on the side wall of the circumference, the middle part of the oil suction pipe is sleeved on the concentric pipe, the outside bottom surface of the oil suction pipe is equipped with a floating part which makes the oil suction pipe float on the liquid level, one end of the outside of the oil suction pipe is connected with the second water pump through a hose, the water pump sucks the oil in the tank body into the oil storage tank for collection, the beneficial effects are that the oil suction pipe is always kept on the upper surface of the liquid under the action of the floating part, because the oil is light, the oil can float on the liquid level, thereby better clear the oil in the sewage, the oil suction pipe is spiral, the advantage is that the oil floats between the spiral spaces of the spiral pipe, the movement of the oil is limited, the oil suction hole with the inclined design can better suck the oil.
Further defined, the floating member is one of an air bag and a foam block, which is advantageous in that it has a simple structure and a reliable floating capability.
Further inject, the one end of pipette is located the third department of jar body height, and first water pump is intermittent type nature suction at the during operation, and its is intentional lies in, intermittent type nature suction liquid, can avoid in the suction process, form the whirl in jar internal portion, because the whirl can be adsorbed with the fluid of come-up, thereby lead to fluid to be taken out by the pipette, cause the fluid separation effect poor, the pipette is located jar internal portion's that separates liquid for as much as possible extraction in the third of body height, also really be for the internal portion of jar of portion of reserving liquid along with the solid discharges simultaneously, wash the plug of filtration pore, of course also can set up at other heights, specific height setting is confirmed by actual conditions.
Further limiting, a position sensor is arranged on the second filter plate, when the position sensor detects that the height of the second filter plate is one third of the height of the tank body, a signal is transmitted to the control system, the control system stops the first water pump and controls the discharging mechanism to discharge materials, the feeding mechanism has the advantages that when more solids are separated, the first filter plate and the second filter plate move upwards to a threshold point, the first water pump is closed at the moment, certain liquid is reserved in the tank body, meanwhile, the discharging mechanism is opened to discharge materials, the liquid moves downwards from above the filter holes formed by the first filter plate and the second filter plate when the materials are discharged, under the action of the gravity of the liquid, the blockage in the filter holes can be discharged, preferably, the rotating motor can be controlled to rotate at the moment, so that the filter holes formed between the first filter plate and the second filter plate are in the maximum state, therefore, the filter holes can be better cleaned under the action of the gravity of the liquid.
The invention has the following technical effects:
(1) the device can realize the separation of solid, liquid and oil in domestic sewage, and is convenient for the subsequent treatment of the domestic sewage. (2) This solid-liquid separation mechanism can adjust the size of filtration pore under the effect of rotating electrical machines, first filter and second filter, can realize that the multiresolution filters, still is favorable to relieving the jam state of filtration pore simultaneously, makes this device can the continuous operation. (3) The oil suction pipe in the oil-liquid separation mechanism floats above liquid all the time, so that oil is sucked, and the oil suction effect is better improved.
Drawings
FIG. 1 is a schematic view of the entire apparatus in this embodiment.
Fig. 2 is a schematic sectional view of a can body in this embodiment.
Fig. 3 is a schematic perspective view of the solid-liquid separation mechanism and the oil-liquid separation mechanism in the present embodiment.
Fig. 4 is a schematic top view of the interior of the can body in this embodiment.
Fig. 5 is a schematic view showing the operation of the first filter plate and the second filter plate forming the combined filter holes according to the present embodiment.
The device comprises a tank body 1, a liquid storage tank 2, a sewage treatment device 3, a first water pump 4, an oil storage tank 5, a second water pump 6, a collecting tank 7, a hose 8, a liquid suction pipe 9, a feeding pipe 10, a second filter plate 11, a first filter plate 12, a baffle 13, a telescopic spring 14, an upper baffle 15, an oil suction pipe 16, a fixing frame 17, a rotating motor 18, a driving gear 19, a telescopic cylinder 20, a bottom cover 21, an end cover 22, a driven gear 23 and a concentric pipe 24.
Detailed Description
The following is further detailed by way of specific embodiments:
as shown in FIG. 1, a domestic sewage treatment device for separating solid, liquid and oil comprises a tank body 1, wherein a bracket and other mounting structures are fixed on the outer side of the tank body 1, which is not described in detail in this embodiment. The upper end of the tank body 1 is provided with an end cover 22, the lower end of the tank body 1 is provided with a discharging mechanism, the discharging mechanism comprises a bottom cover 21 and a telescopic cylinder 20, the bottom cover 21 is in sliding connection with the lower outlet of the tank body 1 to seal the lower outlet of the tank body 1, and the telescopic cylinder 20 is connected with the bottom cover 21 to change the position of the bottom cover 21, so that the bottom of the tank body 1 is opened and closed, and the functions of discharging solids into the collecting tank 7 and sealing the tank body 1 are realized. The middle part of the jar body 1 is equipped with inlet pipe 10, the one end of inlet pipe 10 extends to the lower part of the jar body 1 from the upper end middle part of the jar body 1, the other end of inlet pipe 10 is connected with the liquid storage tank 2 of storing domestic sewage, still be equipped with pipette 9 in the jar body 1, the one end of pipette 9 extends to jar body 1 middle part from the upper portion of the jar body 1, be equipped with first suction mechanism on the other end of pipette 9, the one end of pipette 9 is located the third department of the jar body 1 height, and first water pump 4 is intermittent type nature suction at the during operation, it is intentional that it lies in, intermittent type nature suction liquid, can avoid at the suction in-process, form the whirl at jar internal portion, because the whirl can be adsorbed with the fluid of come-up, thereby lead to fluid to be taken out by pipette 9, cause fluid separation effect poor. The outer side of the feeding pipe 10 is provided with a concentric pipe 24, the concentric pipe 24 is rotatably connected with the inside of the tank body 1, the part of the concentric pipe 24, which is positioned on the outer side of the end cover 22, is provided with a rotating mechanism, the outer side surface of the concentric pipe 24, which is positioned inside the tank body 1, is provided with a solid-liquid separation mechanism and an oil-liquid separation mechanism, the solid-liquid separation mechanism is arranged on the lower part of the oil-liquid separation mechanism and is used for separating solid and liquid in domestic sewage, and the oil-liquid separation mechanism is used for absorbing oil floating on the upper surface of the liquid after the solid-liquid separation.
In summary, the working principle of the technical scheme is as follows:
Preferably, the rotating mechanism comprises a rotating motor 18, a driven gear 23 and a driving gear 19, the rotating motor 18 is fixed on the end cover 22, the driven gear 23 is fixed on the concentric tube 24, the driving gear 19 is fixed on the output end of the rotating motor 18, the driven gear 23 is meshed with the driving gear 19, the concentric tube 24 is driven to rotate through the rotating motor 18, and the structure is simple.
Preferably, the first pumping mechanism comprises a sewage treatment device 3 and a first water pump 4, the water suction end of the water pump is connected with the liquid suction pipe 9, the water outlet end of the water pump is connected with the water inlet of the sewage treatment device 3, in the embodiment, the sewage treatment device 3 is a common sewage treatment integrated device on the market, water is sucked by the first water pump 4, and the liquid filtered out from the tank body 1 is sucked into the sewage treatment device 3 for treatment, so that the device can realize filtering and sewage treatment at the same time.
Preferably, a fixing frame 17 is arranged between the concentric tube 24 and the tank body 1, the edge of the fixing frame 17 is fixed on the inner side surface of the tank body 1, a rolling bearing is arranged in the middle of the fixing frame 17, the concentric tube 24 is fixedly connected with the inner ring of the rolling bearing, and the fixing frame 17 and the rolling bearing are arranged so that the concentric tube 24 can rotate while being fixed in the tank body 1.
As shown in fig. 2 to 4, the solid-liquid separation mechanism includes a baffle 13, a first filter plate 12 and a second filter plate 11, the first filter plate 12 and the second filter plate 11 are provided with a plurality of filter holes with the same shape, size and position, the baffle 13 is fixedly connected to the bottom of the concentric tube 24, the first filter plate 12 is arranged on the upper portion of the baffle 13, and the edge of the first filter plate 12 is connected with the inner wall of the tank body 1 in a sliding manner, the first filter plate 12 can slide up and down on the outer wall of the concentric tube 24, the second filter plate 11 is arranged above the first filter plate 12, and the middle portion of the second filter plate 11 is telescopically connected with the concentric tube 24, the concentric tube 24 is driven to rotate by the rotating motor 18, so as to drive the second filter plate 11 to rotate, when the second filter plate 11 rotates on the first filter plate 12, the filter holes on the second filter plate 11 and the second filter plate 11 are overlapped, namely, the size of the filter hole can be changed, so that the filtering precision of the device can be adjusted, on the other hand, when the filter hole formed by the second filter plate 11 and the first filter plate 12 is blocked, only the second filter plate 11 needs to be rotated, the filter hole formed between the first filter plate 12 and the second filter plate 11 is enlarged, the blocking object can move downwards under the action of gravity, thereby the state that the filter hole is blocked is eliminated, meanwhile, when the domestic sewage is continuously added into the tank body 1 through the feeding pipe 10, because the solid is accumulated at the bottom of the tank body 1, the height of the accumulated solid is increased under the long-time action, a pressure is formed between the solid and the first filter plate 12, the solid is easily extruded into the filter hole, so that the first filter plate 12 is in sliding connection with the inner side of the tank body 1, namely, the first filter plate 12 and the second filter plate 11 are under the action of solid extrusion, can move upwards to reduce the extrusion effort, when making the difficult jam of filter orifice, can also increase the solid accumulation volume of jar body 1 bottom. The top of second filter 11 is equipped with expanding spring 14, concentric tube 24 is located expanding spring 14's inside, 15 fixed connection of overhead gage on one end of expanding spring 14 and the concentric tube 24, the other end and the 11 fixed connection of second filter of expanding spring 14, be used for supporting second filter 11 tightly on first filter 12, the spring has flexible efficiency, can satisfy the up-and-down motion of first filter 12 and second filter 11, and simultaneously, the spring can also support second filter 11 tightly on first filter 12, make the two time installation clearance can not appear, the solid of having avoided in the sewage gets into between the two, cause the poor problem of filter effect, and is further, the upper and lower flexible of spring, can form the shake, thereby the plug in the filtration pore is discharged. The oil-liquid separation mechanism comprises an oil suction pipe 16, a second water pump 6 and an oil storage tank 5, wherein the oil suction pipe 16 is spiral, and the side wall of the oil suction pipe 16 facing the circumference is equidistantly provided with a plurality of oil suction holes which are inclined downwards, the middle part of the oil suction pipe 16 is sleeved on the concentric pipe 24, the bottom surface of the outer side of the oil suction pipe 16 is provided with a floating part which enables the oil suction pipe 16 to float on the liquid level, one end of the outer side of the oil suction pipe 16 is connected with the second water pump 6 through a hose 8, the water pump pumps the oil in the tank body 1 into the oil storage tank 5 for collection, under the action of the floating member, the oil suction pipe 16 is always kept on the upper surface of the liquid, because the oil is light and floats above the liquid surface, thereby better clear away the fluid in the sewage, inhale oil pipe 16 and be the heliciform, such benefit lies in that fluid floats between the spiral interval of spiral pipe, and the removal of fluid is spacing, makes the oil absorption hole of slope design can be better carry out the suction to fluid.
Preferably, the floating member is one of an air bag and a foam block, which is simple in structure and reliable in floating capacity.
Preferably, the second filter plate 11 is provided with a position sensor, when the position sensor detects that the height of the second filter plate 11 is one third of the height of the tank body 1, the position sensor transmits a signal to the control system, the control system stops the first water pump 4, controls the emptying mechanism to empty when the separated solids are more, the first filter plate 12 and the second filter plate 11 will move upwards to a threshold point, at the moment, the first water pump 4 is closed, certain liquid is reserved in the tank body 1, meanwhile, the emptying mechanism is opened to discharge, the liquid moves downwards from above the filter holes formed by the first filter plate 12 and the second filter plate 11 during discharging, under the action of the weight of the liquid, the blockage in the filter holes can be discharged, preferably, the rotating motor 18 can be controlled to rotate at the moment, so that the filter holes formed between the first filter plate 12 and the second filter plate 11 are in the maximum state, therefore, under the action of the gravity of the liquid, the filter holes can be better cleaned.
It should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used broadly in the present invention, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (8)
1. A domestic sewage treatment device for realizing the separation of solid, liquid and oil is characterized by comprising a tank body, wherein an end cover is arranged at the upper end of the tank body, a discharging mechanism is arranged at the lower end of the tank body, a feeding pipe is arranged in the middle of the tank body, one end of the feeding pipe extends to the lower part of the tank body from the middle of the upper end of the tank body, the other end of the feeding pipe is connected with a liquid storage pool for storing domestic sewage, a pipette is further arranged in the tank body, one end of the pipette extends to the middle of the tank body from the upper part of the tank body, a first suction mechanism is arranged at the other end of the pipette, a concentric pipe is arranged on the outer side of the feeding pipe, the concentric pipe is rotatably connected with the inner part of the tank body, a rotating mechanism is arranged at the part of the concentric pipe, which is positioned outside the end cover, a solid-liquid separation mechanism and an oil separation mechanism are arranged on the outer side surface of the inner part of the tank body, and the solid-liquid separation mechanism is arranged at the lower part of the oil separation mechanism, the oil-liquid separation mechanism is used for absorbing oil liquid floating on the upper surface of the liquid after solid-liquid separation;
the solid-liquid separation mechanism comprises a baffle, a first filter plate and a second filter plate, wherein a plurality of filter holes with the same shape, size and position are formed in the first filter plate and the second filter plate;
the rotating mechanism drives the concentric tube to rotate, the concentric tube drives the second filter plate to rotate, when the second filter plate rotates on the first filter plate, the filter holes in the first filter plate and the second filter plate are in an overlapped state, the size of the filter holes can be changed in the rotating process, when the filter holes formed by the second filter plate and the first filter plate are blocked, the second filter plate is rotated, the filter holes formed between the first filter plate and the second filter plate are enlarged, and a blocking object can move downwards under the action of gravity, so that the state that the filter holes are blocked is eliminated;
the domestic sewage is continuously added into the tank body through the feeding pipe, pressure is formed between the accumulated solids at the bottom of the tank body and the first filter plate, the formed pressure extrudes the solids into the filter holes, and the first filter plate and the second filter plate can move upwards under the action of the extrusion of the solids;
the top of second filter is equipped with expanding spring, concentric tube is located expanding spring's inside, expanding spring's one end and concentric tube fixed connection, expanding spring's the other end and second filter fixed connection for support the second filter tightly on first filter.
2. The domestic sewage treatment device for separating solid, liquid and oil according to claim 1, wherein the rotating mechanism comprises a rotating motor, a driven gear and a driving gear, the rotating motor is fixed on the end cover, the driven gear is fixed on the concentric tube, the driving gear is fixed on the output end of the rotating motor, and the driven gear is meshed with the driving gear.
3. The domestic sewage treatment device for separating solid, liquid and oil according to claim 1, wherein the first pumping mechanism comprises a sewage treatment device and a first water pump, the water suction end of the water pump is connected with the liquid suction pipe, and the water outlet end of the water pump is connected with the water inlet of the sewage treatment device.
4. The domestic sewage treatment device for realizing the separation of solid, liquid and oil according to claim 1, wherein a fixing frame is arranged between the concentric tube and the tank body, the edge of the fixing frame is fixed on the inner side surface of the tank body, a rolling bearing is arranged in the middle of the fixing frame, and the concentric tube is fixedly connected with the inner ring of the rolling bearing.
5. The domestic sewage treatment device for separating solid from liquid according to claim 1, wherein the oil-liquid separating mechanism comprises an oil suction pipe, a second water pump and an oil storage tank, the oil suction pipe is spiral, a plurality of oil suction holes inclined downwards are formed in the side wall, facing the circumference, of the oil suction pipe at equal intervals, the middle of the oil suction pipe is sleeved on a concentric pipe, a floating piece enabling the oil suction pipe to float on the liquid level is arranged on the bottom surface of the outer side of the oil suction pipe, one end of the outer side of the oil suction pipe is connected with the second water pump through a hose, and the water pump sucks the oil in the tank body into the oil storage tank for collection.
6. The domestic sewage treatment device for separating solid, liquid and oil according to claim 5, wherein the floating member is one of an air bag and a foam block.
7. The domestic sewage treatment device for realizing the separation of solid, liquid and oil according to claim 1, wherein one end of the suction pipe is positioned at one third of the height of the tank body, and the first water pump is used for intermittently pumping when in operation.
8. The domestic sewage treatment device for separating solid, liquid and oil according to claim 1, wherein the second filter plate is provided with a position sensor, the position sensor transmits a signal to the control system when detecting that the height of the second filter plate is one third of the height of the tank body, and the control system stops the first water pump and controls the discharging mechanism to discharge.
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| CN202110828572.9A CN113499629B (en) | 2021-07-22 | 2021-07-22 | Domestic sewage treatment device for realizing separation of solid, liquid and oil |
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