CN111170549B

CN111170549B - Sewage treatment device

Info

Publication number: CN111170549B
Application number: CN202010129568.9A
Authority: CN
Inventors: 季红英
Original assignee: Zhongshan Zhengtu Environmental Protection Technology Co ltd
Current assignee: Zhongshan Zhengtu Environmental Protection Technology Co ltd
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2022-03-15
Anticipated expiration: 2040-02-28
Also published as: CN111170549A

Abstract

The invention discloses a sewage treatment device, wherein a sewage inlet pipe and an oil dirt suction pipe are arranged on an upper end cover of a pressure tank, a separation layer plate is arranged in the middle of the pressure tank, a stirring shaft is arranged in the pressure tank, a water collecting tray is movably sleeved on the stirring shaft below the separation layer plate, the separation layer plate is provided with a communicating hole, an electromagnetic valve is arranged in the communicating hole, a plurality of centrifugal filters are uniformly distributed and connected below the water collecting tray, the lower part of the stirring shaft is sleeved with a connecting lantern ring, the lower part of the centrifugal filter is connected with the connecting lantern ring through a connecting rod, a rotating disk is arranged in the lower end cover of the pressure tank, a supporting spring is arranged between a guide cylinder at the lower end of the centrifugal filter and the rotating disk, a combination mechanism is arranged between the linkage seat and the water collecting tray, an electrostatic field generating device is arranged in the pressure tank above the separation layer plate, and an aeration mechanism is arranged on a stirring shaft in the pressure tank above the separation layer plate. The invention has simple structure, can quickly separate the oily sewage, has high operation efficiency and low oil content of the effluent.

Description

Sewage treatment device

Technical Field

The invention relates to the field of sewage treatment equipment, in particular to a sewage treatment device.

Background

The daily production and living activities of human beings produce various oil compounds, which gradually invade into the water body to form various types of oily sewage. The arbitrary discharge of oily sewage not only wastes natural resources, but also affects environmental media such as soil, underground water, atmosphere and the like and the whole ecological system, and directly or indirectly harms human health. Therefore, the separation and treatment of oily sewage has become one of the key problems in environmental management, and has attracted high attention from countries around the world.

There are many ways to separate oil from water, such as: the gravity separation method is a traditional oil-water separation technology which is the earliest and commonly applied, and is a physical method for separating oil droplets, suspended matters and water in a static or flowing state by utilizing the density difference of oil and water and the incompatibility of the oil and the water through a gravity separator. Adopt gravity separation method to carry out oil-water separation and have equipment structure simple, convenient operation, operation stability, maintenance cost hang down, and the separation process does not consume the medicament, need not plus power, a great deal of advantages such as no secondary pollution, nevertheless still have some unfavorable factor and restrict its application, if: the oil separation time is long, the separation efficiency is low, the occupied area of equipment is large and the like due to the fact that only the density difference of oil and water phases is relied on.

Furthermore, before sewage treatment, the sewage generally needs to be pretreated by adding chemicals, such as sodium hypochlorite, so as to remove bacteria, microorganisms and the like in the sewage and prevent the bacteria from damaging the subsequent filtering membrane. The existing dosing device generally comprises a dosing pool, a medicine storage pool, a medicine mixing pool, a matched pipeline, a valve and the like, namely, sodium hypochlorite is added after being prepared into a solution. However, sodium hypochlorite solution is easily decomposed by light, so that it is easy to lose its sterilizing effect. At present, a valve for a sewage treatment device can not directly add solid sodium hypochlorite in the sewage conveying process.

Therefore, the existing valves for sewage treatment devices and for sewage treatment devices are to be further improved.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the sewage treatment device which has a simple structure, can quickly separate oil-containing sewage, and has high operation efficiency and low oil content of effluent;

the invention also aims to provide a sewage treatment device which can conveniently add materials into the pressure tank body in the sewage treatment project.

In order to achieve the first purpose, the invention adopts the following scheme: the utility model provides a sewage treatment device, including the overhead tank be equipped with sewage inlet tube and oil absorption dirty pipe on the upper end cover of overhead tank, the oil absorption dirty pipe stretches into in the overhead tank upper portion, its characterized in that: the pressure tank is internally provided with a separation layer plate, a stirring shaft is arranged in the pressure tank, the upper end of the stirring shaft extends out of the upper end cover and is connected with a driving motor arranged on the pressure tank, the lower end of the stirring shaft penetrates through the separation layer plate and extends into a lower end cover of the pressure tank, a water collecting tray is movably sleeved on the stirring shaft below the separation layer plate, a communicating hole which can communicate the pressure tank at the upper part of the separation layer plate with the water collecting tray is arranged on the separation layer plate, an electromagnetic valve is arranged in the communicating hole, a plurality of centrifugal filters are uniformly distributed and connected below the water collecting tray, a connecting sleeve ring is sleeved at the lower part of the stirring shaft, the lower parts of the centrifugal filters are connected with the connecting sleeve ring through connecting rods, a rotating disk is arranged in the lower end cover of the pressure tank, the lower ends of the centrifugal filters are provided with guide cylinders, and abdicating through holes are arranged at the positions corresponding to the rotating disk and the guide cylinders, the direction cylinder sets up in the through-hole of stepping down be equipped with supporting spring between the direction cylinder between rotary disk and the connecting rod be equipped with the linkage seat on the (mixing) shaft of water-collecting tray below be equipped with between linkage seat and the water-collecting tray and enable centrifugal filter along with the rotatory combined mechanism of (mixing) shaft when the water-collecting tray descends and be connected with the linkage seat be equipped with electrostatic field generating device in the overhead tank of separate floor board is equipped with aeration mechanism on the (mixing) shaft.

As another improvement of the sewage treatment device, the aeration mechanism comprises aeration pipes uniformly distributed on the outer wall of a stirring shaft, a plurality of aeration holes are densely distributed on the aeration pipes, an air supply channel is arranged in the stirring shaft, an air conveying vertical pipe is arranged in a lower end cover, an inserting pipe is arranged at the upper end of the air conveying vertical pipe and is inserted in the air supply channel, an air conveying horizontal pipe is arranged on the lower end cover, one end of the air conveying horizontal pipe is connected with the lower end of the air conveying vertical pipe, and one end of the air conveying horizontal pipe extends out of the lower end cover.

As another improvement of the sewage treatment device, the electrostatic field generating device comprises a plurality of negative coils arranged in the pressure tank at intervals from top to bottom, the negative coils are connected through a negative lead, a conductive slip ring is arranged in the upper end of the upper end cover, the stirring shaft is arranged in the conductive slip ring, the conductive slip ring is connected with a positive lead, and the positive lead passes through the upper end cover.

As another improvement of the sewage treatment device, the water collecting tray comprises a conical tray body, a conical connecting boss is arranged in the middle of the upper end of the conical tray body, a communicating groove hole is formed in the middle of the conical connecting boss, the stirring shaft is arranged in the communicating groove hole, a conduction opening is formed in the upper portion of the conical tray body, and a connecting guide pipe is arranged between the conduction opening and the water inlet end of the centrifugal filter.

As another improvement of the sewage treatment device, the combination mechanism comprises positioning convex strips arranged on the outer wall of the lower end face of the conical disc body at intervals, a conical notch is arranged at the upper end of the linkage seat, a plurality of limiting convex strips are arranged on the surface of the conical notch at intervals, and a gap between every two adjacent limiting convex strips can accommodate the positioning convex strips.

As another improvement of the sewage treatment device, a pressure sensor is arranged in the pressure tank above the separation diaphragm.

In order to achieve the first purpose, on the basis of the scheme, the sewage inlet pipe is additionally provided with a dosing valve.

As a further improvement of the dosing valve, the dosing valve comprises a valve body, a valve cavity is arranged in the valve body, a liquid inlet pipe communicated with the valve cavity is arranged in the middle of the valve body, and a liquid outlet pipe is arranged at the lower part of the valve body, and the dosing valve is characterized in that: valve rod that the activity is equipped with valve pocket inner wall dynamic seal in the valve body valve rod lower part outer wall is equipped with the intercommunication mouth that can communicate with the feed liquor pipe the valve rod lower extreme is equipped with the liquid outlet be equipped with the passageway in the valve rod be equipped with the feed bin above the valve body the feed bin lower extreme is equipped with the connecting pipe, valve rod upper end movable sleeve is established on the connecting pipe outer wall and with connecting pipe outer wall dynamic seal be equipped with the switching pipe that is linked together with the feed bin on the feed liquor pipe switching pipe middle part is equipped with presses down the water valve switch be equipped with the drive block that can drive to press down the water valve switch and open on the outer wall of valve rod upper portion be equipped with the sealed pressure head that can seal the connecting pipe import in the feed liquor pipe with the intercommunication mouth of passageway be equipped with on the valve rod and order to drive when the valve rod removes the valve rod and make the valve rod of intercommunication mouth downside seal feed liquor pipe and press down water valve switch and sealed pressure head The opening driving mechanism is provided with a feed inlet at the upper end of the feed bin, and the feed inlet is provided with a sealing cover capable of being separated from the feed bin.

As a further improvement of the dosing valve, the sealing cover is provided with an exhaust mechanism.

As a further improvement of the dosing valve, the exhaust mechanism comprises an exhaust rod, a mounting hole is formed in the middle of the sealing cover, the exhaust rod is movably arranged in the mounting hole, an exhaust channel is formed in the upper portion of the exhaust rod, an exhaust port communicated with the exhaust channel is formed in the middle of the exhaust rod, a floating plate is sleeved on the exhaust rod below the sealing cover, a limiting round table capable of preventing the floating plate from being separated is arranged at the lower end of the exhaust rod, an exhaust groove is formed in the outer wall of the floating plate, and a sealing block capable of sealing the exhaust groove is arranged in the position, corresponding to the exhaust groove, of the inner wall of the feeding bin.

As a further improvement of the dosing valve, the sealing cover is provided with a limiting groove, the outer wall of the exhaust rod is provided with a limiting driving strip, the outer wall of the sealing cover is provided with external threads, the inner wall of the upper end of the feeding bin is provided with internal threads, and the sealing cover is screwed on the valve body.

As a further improvement of the dosing valve, the driving mechanism comprises a hinged seat arranged on the outer wall of the upper part of the valve body, a connecting arm is hinged on the hinged seat, a driving handle is hinged on the outer end of the connecting arm, a hinged middle shaft is arranged in the middle of the driving handle, a driving arm is hinged on the hinged middle shaft, a hinged platform is arranged on the outer wall of the upper part of the valve rod, the upper end of the driving arm is hinged on the hinged platform, a driving arm is hinged on the upper part of the driving arm, a driving convex column is arranged at the upper end of the driving arm, a guide rod is arranged on the outer side of the sealing pressure head, the lower part of the guide rod is connected with the sealing pressure head through a connecting block, a abdicating slotted hole is arranged at the lower part of the feeding bin, the connecting block is arranged in the abdicating slotted hole, a dynamic sealing mechanism is arranged between the connecting block and the abdicating slotted hole, a waist-shaped long slot is arranged at the lower part of the guide rod, the drive convex column is movably arranged in the waist-shaped long groove, the outer wall of the feeding bin is provided with a guide ring, the guide rod is movably arranged in the guide ring, a first spring is sleeved on the guide rod between the guide ring and the drive convex column, the drive block is arranged on the position, corresponding to the pressing water valve switch, of the hinge table, and a second spring is sleeved outside a connecting pipe between the feeding bin and the hinge table. The push water valve switch belongs to a commercial product, has a structure similar to a flush valve on a urinal, can be communicated when being pressed by force, and can be reset and closed after being released.

As a further improvement of the dosing valve, the upper part of the valve body is provided with a yielding vertical groove, the hinge joint of the hinge joint platform and the driving arm is arranged in the yielding vertical groove, a yielding long groove is arranged on one side of the upper part of the valve body corresponding to the pressing water valve switch, and the driving block is arranged in the yielding long groove.

As a further improvement of the dosing valve, the dynamic sealing mechanism comprises a connecting sealing groove which is longitudinally arranged on the feeding bin on the upper side and the lower side of the abdicating slotted hole and communicated with the abdicating slotted hole, a sealing lug is arranged on the connecting block at a position corresponding to the connecting sealing groove, and the sealing lug is movably arranged in the connecting sealing groove.

As a further improvement of the dosing valve, the two sides of the driving mechanism are respectively provided with a baffle plate, and the baffle plates are connected to the feeding bin or/and the outer wall of the valve body.

As a further improvement of the dosing valve, a positioning mechanism is arranged on the inner wall of the baffle.

As a further improvement of the dosing valve, the positioning mechanism comprises a positioning slot hole arranged on the inner wall of the baffle, an elastic positioning convex column is arranged at the position of the driving mechanism corresponding to the positioning slot hole, the elastic positioning convex column comprises a positioning convex column, an installation slot hole is arranged in the positioning convex column, a marble is arranged in the installation slot hole, and a jacking spring is arranged between the marble and the bottom of the installation slot hole.

In summary, compared with the prior art, the invention has the beneficial effects that: firstly, the upper part of the sewage treatment device is provided with the stirring mechanism, the aeration mechanism and the electrostatic field generating device, thereby greatly accelerating the speed and the effect of oil-water separation. Secondly, the centrifugal filter is arranged at the lower part of the sewage treatment device, so that the sewage after oil-water separation is effectively filtered, the filtering efficiency is high, and the effect is good. The dosing valve is simple in structure, can realize opening and closing of a pipeline, can add solid materials such as solid sodium hypochlorite and the like into the valve under the condition of not influencing the use, and is convenient to use. And fourthly, the exhaust mechanism in the dosing valve can effectively exhaust the gas in the feeding bin in the process of mixing the liquid and the solid materials, so that the liquid can smoothly enter the feeding bin, and in addition, the air entering the liquid outlet pipe in the process of reinforcing the solid materials is effectively reduced. Fifthly, in the dosing valve, the vertical moving process of the sealing pressure head is mutually attached to the conical discharge hole on the lower side inside the feeding bin, so that solid materials are effectively hammered and rolled, the solid materials are prevented from caking, can smoothly enter the valve rod, and the dissolving effect of the solid materials is improved.

Drawings

Fig. 1 is a perspective view of the present invention.

FIG. 2 is a schematic top view of the present invention.

Fig. 3 is a schematic cross-sectional view taken along line a-a in fig. 2.

Fig. 4 is a schematic cross-sectional view of B-B in fig. 2.

Fig. 5 is a schematic view of the internal structure of the present invention.

FIG. 6 is a schematic sectional view of the water collection tray of the present invention in combination with the linkage.

Fig. 7 is an enlarged view at C in fig. 5.

FIG. 8 is a perspective view of the dosing valve of the present invention.

FIG. 9 is a second schematic perspective view of the dosing valve of the present invention.

FIG. 10 is a schematic sectional view of the chemical adding valve of the present invention in an open state.

FIG. 11 is a schematic cross-sectional view of the medicated valve of the present invention in a closed state.

FIG. 12 is a schematic sectional perspective view of the medicated valve of the present invention.

FIG. 13 is a schematic cross-sectional view of the dosing process in the dosing valve of the present invention.

FIG. 14 is a third schematic perspective view of the medicated valve of the present invention.

FIG. 15 is a schematic view of the venting mechanism in the dosing valve of the present invention.

Fig. 16 is a perspective view of fig. 13 at D.

In the figure: 1. a valve body; 2. a valve cavity; 3. a liquid inlet pipe; 4. a valve stem; 5. a communication port; 6. a liquid outlet; 7. a channel; 8. a feeding bin; 9. a connecting pipe; 10. switching the tube; 11. pressing a water valve switch; 12. a drive block; 13. sealing the pressure head; 14. a drive mechanism; 15. a feed inlet; 16. a sealing cover; 17. an exhaust mechanism; 18. a baffle plate; 19. a positioning mechanism; 20. a liquid outlet pipe; 100. a pressure tank; 101. a abdication vertical slot; 102. an abdicating long groove; 110. an upper end cover; 120. a sewage inlet pipe; 130. a dirty oil suction pipe; 140. separating the laminate; 141. a hinged seat; 142. a connecting arm; 143. a drive handle; 144. the middle shaft is hinged; 145. a drive arm; 146. a hinging table; 147. a drive arm; 148. a driving boss; 149. a guide bar; 150. a lower end cover; 160. a communicating hole; 170. an exhaust passage; 171. an exhaust rod; 172. mounting holes; 173. an exhaust port; 174. a floating plate; 175. An exhaust groove; 176. a sealing block; 177. sealing the convex column; 178. a limiting groove; 179. limiting the driving strip; 180. an electromagnetic valve; 191. positioning the slotted hole; 200. a stirring shaft; 210. a linkage seat; 300. a drive motor; 400. a water collection tray; 410. a conical disk body; 420. a conical connection boss; 430. the groove hole is communicated; 440. a conduction port; 450. connecting a conduit; 500. a centrifugal filter; 510. a guide cylinder; 600. a connecting lantern ring; 610. a connecting rod; 620. rotating the disc; 630. a yielding through hole; 640. a support spring; 700. a linkage mechanism; 710. positioning the convex strip; 720. a tapered notch; 730. limiting convex strips; 800. an electrostatic field generating device; 801. a conical discharge hole; 810. a negative pole coil; 820. a negative electrode lead; 830. a positive electrode lead; 900. an aeration mechanism; 910. an aeration pipe; 920. an aeration hole; 930. an air supply channel; 940. a gas transmission vertical pipe; 950. inserting a pipe; 960. a transverse gas conveying pipe; 1000. a dosing valve; 1410. connecting blocks; 1411. yielding slotted holes; 1412. a dynamic sealing mechanism; 14121. connecting the sealing groove; 14122. sealing the bump; 1413. a waist-shaped long groove; 1415. a guide ring; 1416. a first spring; 1417. a second spring; 1501. connecting the bosses; 1502. a central abdicating hole; 1503. positioning the ring table; 1504. a water outlet; 1505 connecting the notch; 1710. A limiting round table; 1741. A first seal ring; 1742. a second seal ring; 1743. and a third seal ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the specification of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 7, a sewage treatment apparatus comprises a pressure tank 100, a sewage inlet pipe 120 and a sewage suction pipe 130 are arranged on an upper end cover 110 of the pressure tank 100, the sewage suction pipe 130 extends into the upper portion of the pressure tank 100, a partition plate 140 is arranged in the middle of the pressure tank 100, a stirring shaft 200 is arranged in the pressure tank 100, the upper end of the stirring shaft 200 extends out of the upper end cover 110 and is connected with a driving motor 300 arranged on the pressure tank 100, the lower end of the stirring shaft 200 penetrates through the partition plate 140 and extends into a lower end cover 150 of the pressure tank 100, a water collecting tray 400 is movably sleeved on the stirring shaft 200 below the partition plate 140, a communication hole 160 capable of communicating the pressure tank 100 on the upper portion of the partition plate 140 and the water collecting tray 400 is arranged on the partition plate 140, an electromagnetic valve 180 is arranged in the communication hole 160, a plurality of centrifugal filters 500 are uniformly connected below the water collecting tray 400, the lower part of the stirring shaft 200 is sleeved with a connecting sleeve ring 600, the lower part of the centrifugal filter 500 is connected with the connecting sleeve ring 600 through a connecting rod 610, a rotating disc 620 is arranged in the lower end cover 150 of the pressure tank 100, a guide cylinder 510 is arranged at the lower end of the centrifugal filter 500, a yielding through hole 630 is arranged on the rotating disc 620 corresponding to the guide cylinder 510, the guide cylinder 510 is arranged in the yielding through hole 630, a supporting spring 640 is arranged between the guide cylinder 510 between the rotating disc 620 and the connecting rod 610, a linkage seat 210 is arranged on the stirring shaft 200 below the water collecting tray 400, a combination mechanism 700 which can enable the centrifugal filter 500 to rotate along with the stirring shaft 200 when the water collecting tray 400 descends and is connected with the linkage seat 210 is arranged between the linkage seat 210 and the water collecting tray 400, and an electrostatic field generating device 800 is arranged in the pressure tank 100 above the partition plate 140, an aeration mechanism 900 is arranged on the stirring shaft 200 in the pressure tank 100 above the division layer plate 140. According to the invention, a boss 1501 is connected in the lower end cover 150, a central abdicating hole 1502 is arranged in the middle of the connecting boss 1501, a positioning ring platform 1503 is arranged on the connecting boss 1501 outside the central abdicating hole 1502, the rotating disk 620 is movably arranged in the positioning ring platform 1503, the abdicating through hole 630 is communicated with the central abdicating hole 1502, and a plurality of communicating notch 1505 communicated with a water outlet 1504 of the lower end cover 150 are uniformly distributed on the periphery of the positioning ring platform 1503.

When the invention is used for sewage treatment, the electromagnetic valve 180, the oil dirt suction pipe 130 and the aeration mechanism 900 are controlled to be in a closed state, sewage enters the pressure tank 100 from the sewage inlet pipe 120, and when the depth of the sewage is higher than the lower end of the oil dirt suction pipe 130 and lower than the joint of the upper end cover 110 and the pressure tank 100, water inlet is stopped; the aeration mechanism 900 and the driving motor 300 are started, the aeration mechanism 900 is enabled to perform aeration and stirring simultaneously, the aeration mechanism 900 is started to perform rotary stirring to enable the oily sewage to form uniform oil-water emulsion, aeration is performed during the stirring process, gas moves in the oily sewage, larger oil is brought to the oily sewage to form a layer of oil film, and the oil film is pumped out to remove the larger oil particles in the oily sewage; the pressure inside the pressure tank 100 is effectively increased in the aeration process, so that the air can be well dissolved in the sewage, when the pressure reaches the preset pressure, the aeration is stopped, and the electrostatic field generating device 800 is started; because the dielectric constant of water is far higher than that of oil, when a high electric field is externally added, the oil can be regarded as an insulating medium, water drops dispersed in the oil are polarized under the action of the electric field force, the surfaces of the water drops are not uniform under the action of the electric field force, the stronger the electric field, the more obvious the action is, the deformation of the pull rope along the direction of a power line can be caused, the collision between the adjacent water drops is caused, the coalescence is further caused, the water drops with small particles are combined into large water drops, and thus the continuous oil phase is separated by sedimentation. After standing and separating for a period of time, the oil suction device connected with the oil suction pipe 130 is controlled to be opened to suck the oil stain on the upper layer, the electromagnetic valve 180 is controlled to be opened, the water phase enters the centrifugal filter 500 below the partition plate 140 for centrifugal filtration, the impurities in the water are further filtered, and the filtered water is discharged from the water outlet 1504 on the lower end cover 150 or enters the next process.

The aeration mechanism 900 comprises aeration pipes 910 uniformly distributed on the outer wall of a stirring shaft 200, a plurality of aeration holes 920 are densely distributed on the aeration pipes 910, an air supply channel 930 is arranged in the stirring shaft 200, an air supply vertical pipe 940 is arranged in a lower end cover 150, an insertion pipe 950 is arranged at the upper end of the air supply vertical pipe 940, the insertion pipe 950 is inserted in the air supply channel 930, an air supply horizontal pipe 960 is arranged on the lower end cover 150, one end of the air supply horizontal pipe 960 is connected with the lower end of the air supply vertical pipe 940, and one end of the air supply horizontal pipe 960 extends out of the lower end cover 150. In the technical scheme of the invention, the gas transmission vertical pipe 940 plays a role in auxiliary support for the stirring shaft 200, and in addition, the aeration pipe 910 provided by the invention rotates along with the stirring shaft 200 and aerates at the same time, so that gas can effectively form small bubbles in water, and the oil-water separation can be effectively accelerated.

The electrostatic field generating device 800 of the present invention comprises a plurality of negative coils 810 arranged in the pressure tank 100 at intervals from top to bottom, the plurality of negative coils 810 are connected by a negative wire 820, a conductive slip ring is arranged in the upper end of the upper end cover 110, the stirring shaft 200 is arranged in the conductive slip ring, the conductive slip ring is connected with a positive wire 830, and the positive wire 830 passes through the upper end cover 110. According to the invention, the outer surface of the stirring shaft 200 used as the anode can be coated with the insulating layer, so that the breakdown phenomenon caused by excessive local current of droplet chaining is effectively prevented, and the energy consumption is reduced. The invention also comprises a control box, wherein the control box is internally provided with an adaptive module, a central computer, a controller, a transformer and the like, and the negative lead 820 and the positive lead 830 are respectively connected with the transformer. The intensity of the electrostatic field can be varied by means of a transformer.

The pressure tank 100 is a vertical pressure tank, so that the retention time of the emulsion in an electric field is effectively prolonged, and oil-water separation is facilitated.

The water collecting tray 400 comprises a conical tray body 410, a conical connecting boss 420 is arranged in the middle of the upper end of the conical tray body 410, a communicating slot hole 430 is formed in the middle of the conical connecting boss 420, the stirring shaft 200 is arranged in the communicating slot hole 430, a conduction opening 440 is formed in the upper portion of the conical tray body 410, and a connecting conduit 450 is arranged between the conduction opening 440 and the water inlet end of the centrifugal filter 500. The outer wall of the upper end of the conical disc body 410 of the invention can form a dynamic seal with the inner wall of the pressure tank 100.

The combination mechanism 700 of the present invention comprises positioning convex strips 710 arranged on the outer wall of the lower end surface of the conical disc body 410 at intervals, a conical notch 720 is arranged at the upper end of the linkage seat 210, a plurality of limiting convex strips 730 are arranged on the surface of the conical notch 720 at intervals, and the positioning convex strips 710 can be accommodated in the gap between two adjacent limiting convex strips 730.

The oil stain absorption pipe 130 can adopt a telescopic structure, and specifically can comprise a sleeve fixedly connected to the pressure tank 100, wherein a telescopic pipe is arranged in the sleeve, an abdicating long groove is arranged on the outer wall of the sleeve, a transmission rack is arranged on the outer wall of the telescopic pipe corresponding to the abdicating long groove, a motor is arranged on the outer wall of the sleeve, a motor shaft of the motor is provided with a driving gear, and the driving gear is meshed with the transmission rack. The present invention provides a pressure sensor in the pressure tank 100 above the division plate 140. A pressure gauge is also arranged on the upper end cover 110. In the invention, pressure sensors can be respectively arranged at the lower part and the upper part in the pressure tank 100 above the separation plate 140, the upper pressure sensor measures the upper pressure value in the pressure tank 100, the lower pressure sensor measures the lower pressure value in the pressure tank 100, the upper pressure value and the lower pressure value are transmitted to the adaptation module through leads, the adaptation module converts pressure value signals and inputs the pressure value signals into the central computer, and the central computer calculates the upper-lower pressure difference in the oil-water separation tank to obtain the position of an oil-water interface in the oil-water separation tank. The controller controls the motor to work, so that the oil and sewage suction pipe 130 enters an oil and sewage layer, and the position of the oil and sewage suction pipe is adjusted according to the oil and sewage suction process, and oil and sewage are sucked and removed accurately.

The invention is provided with a dosing valve 1000 on the sewage inlet pipe 120, the dosing valve 1000 comprises a valve body 1, a valve cavity 2 is arranged in the valve body 1, a liquid inlet pipe 3 communicated with the valve cavity 2 is arranged in the middle of the valve body 1, a liquid outlet pipe 20 is arranged at the lower part of the valve body 1, a valve rod 4 dynamically sealed with the inner wall of the valve cavity 2 is movably arranged in the valve body 1, a communicating port 5 capable of being communicated with the liquid inlet pipe 3 is arranged at the outer wall of the lower part of the valve rod 4, a liquid outlet 6 is arranged at the lower end of the valve rod 4, a channel 7 is arranged in the valve rod 4, a feeding bin 8 is arranged above the valve body 1, a connecting pipe 9 is arranged at the lower end of the feeding bin 8, the upper end of the valve rod 4 is movably sleeved on the outer wall of the connecting pipe 9 and dynamically sealed with the outer wall of the connecting pipe 9, a switching pipe 10 communicated with the feeding bin 8 is arranged on the liquid inlet pipe 3, a pressing water valve switch 11 is arranged in the middle of the switching pipe 10, be equipped with on the outer wall of 4 upper portions of valve rod and drive the driver block 12 that can drive and press water valve switch 11 and open be equipped with the sealed pressure head 13 that can seal the 9 imports of connecting pipe in the feeding bin 8 valve rod 4 middle part is equipped with can feed through feed liquor pipe 3 with the intercommunication mouth 5 of passageway 7 be equipped with on the valve body 1 and drive when can order about valve rod 4 to remove thereby valve rod 4 seals feed liquor pipe 3 and press water valve switch 11 and the actuating mechanism 14 that sealed pressure head 13 was opened the feeding bin 8 upper end is equipped with charge door 15 the charge door 15 is equipped with the sealed lid 16 that can separate with feeding bin 8. The valve can effectively control the opening and closing of the pipeline, and can add solid materials such as solid sodium hypochlorite and the like into the valve under the condition of not influencing the use, so that the use is convenient. The dosing valve 1000 of the present invention can also be used as an exhaust valve.

In the present invention, the sealing cover 16 is provided with an air discharge mechanism 17. Wherein exhaust mechanism 17 includes exhaust rod 171 sealed lid 16 middle part is equipped with mounting hole 172, the activity of exhaust rod 171 sets up in the mounting hole 172 be equipped with exhaust passage 170 in the exhaust rod 171 upper portion exhaust rod 171 middle part is equipped with the gas vent 173 with exhaust passage 170 intercommunication the cover is equipped with kickboard 174 on the exhaust rod 171 of sealed lid 16 below the cover be equipped with can prevent the spacing round platform 1710 that kickboard 174 breaks away from be equipped with exhaust groove 175 on the kickboard 174 outer wall, be equipped with the seal block 176 that can seal exhaust groove 175 in the corresponding position of charging bin 8 inner wall and exhaust groove 175. In the invention, the sealing convex column 177 is arranged in the middle of the upper end surface of the floating plate 174, when the liquid in the feeding bin 8 is increased to enable the floating plate 174 to ascend, the gas in the feeding bin 8 enters the space formed by the upper end surface of the floating plate 174, the lower end surface of the sealing cover 16 and the inner wall of the feeding bin 8 from the exhaust groove 175, then enters the exhaust channel 170 in the exhaust rod 171 through the exhaust port 173 and is exhausted to the outside, so that the liquid can be effectively ensured to smoothly enter the feeding bin, the amount of air mixed in the liquid is effectively reduced, and the stability of liquid conveying is ensured. According to the invention, the first sealing ring 1741, the second sealing ring 1742 and the third sealing ring 1743 are arranged on the peripheral wall surface of the floating plate 174 at intervals, so that the sealing property between the floating plate 174 and the inner wall of the upper part of the feeding bin 8 is effectively ensured.

According to the invention, the sealing cover 16 is provided with a limiting groove 178, the outer wall of the exhaust rod 171 is provided with a limiting driving strip 179, the outer wall of the sealing cover 16 is provided with an external thread, the inner wall of the upper end of the feeding bin 8 is provided with an internal thread, and the sealing cover 16 is screwed on the valve body 1.

The driving mechanism 14 of the invention comprises a hinge seat 141 arranged on the outer wall of the upper part of the valve body 1, a connecting arm 142 is hinged on the hinge seat 141, a driving handle 143 is hinged on the outer end of the connecting arm 142, a hinge middle shaft 144 is arranged in the middle of the driving handle 143, a driving arm 145 is hinged on the hinge middle shaft 144, a hinge table 146 is arranged on the outer wall of the upper part of the valve rod 4, the upper end of the driving arm 145 is hinged on the hinge table 146, a driving arm 147 is hinged on the upper part of the driving arm 145, a driving convex column 148 is arranged on the upper end of the driving arm 147, a guide rod 149 is arranged on the outer side of the sealing pressure head 13, the lower part of the guide rod 149 is connected with the sealing pressure head 13 through a connecting block 1410, a yielding slotted hole 1411 is arranged on the lower part of the feeding bin 8, the connecting block 1410 is arranged in the yielding slotted hole 1411, a dynamic sealing mechanism 1412 is arranged between the connecting block 1410 and the yielding slotted hole 1411, a waist-shaped long groove 1413 is arranged at the lower part of the guide rod 149, the driving convex column 148 is movably arranged in the waist-shaped long groove 1413, a guide ring 1415 is arranged on the outer wall of the feeding bin 8, the guide rod 149 is movably arranged in the guide ring 1415, a first spring 1416 is sleeved on the guide rod 149 between the guide ring 1415 and the driving convex column 148, the driving block 12 is arranged at the position corresponding to the hinged platform 146 and the pressing water valve switch 11, and a second spring 1417 is sleeved outside the connecting pipe 9 between the feeding bin 8 and the hinged platform 146. In the invention, the driving handle 143 is pulled to drive the driving arm 145 to drive the valve rod 4 connected to the hinged platform 146 to move, when the communicating port 5 at the lower part of the valve rod 4 is separated from the liquid inlet pipe 3, the outer wall of the valve rod 4 at the lower part of the communicating port 5 seals the liquid inlet pipe 3, at the moment, the driving block 12 on the hinged platform 146 is positioned below the pressing water valve switch 11, and the valve is in a closed state; the driving handle 143 is continuously shifted upwards, when the driving block 12 extrudes the pressing water valve switch 11, the pressing water valve switch 11 is opened, the liquid in the liquid inlet pipe 3 enters the feeding bin 8 through the switching pipe 10, at the moment, the sealing pressure head 13 seals the connecting pipe 9, the liquid is continuously increased in the feeding bin 8, and the air in the feeding bin 8 is discharged to the outside through the exhaust mechanism 17, so that the solid material and the liquid are mixed; when the driving handle 143 is further pushed upward, the driving boss 148 on the driving arm 147 presses against the upper end of the elongated slot 1413, the guiding rod 149 is forced to overcome the pressure of the first spring 1416 to move up and down in the guiding ring 1415, so as to drive the sealing pressure head 13 to move, the connecting pipe 9 is communicated with the interior of the feeding bin 8, and the solid material or the solid material solution mixed with the liquid can enter the valve rod 4 through the connecting pipe 9 and flow to the liquid outlet pipe 20 on the valve body 1.

According to the invention, the upper part of the valve body 1 is provided with the abdicating vertical groove 101, the hinged part of the hinged platform 146 and the driving arm 145 is arranged in the abdicating vertical groove 101, the upper part of the valve body 1 corresponding to one side of the pressing water valve switch 11 is provided with an abdicating long groove 102, and the driving block 12 is arranged in the abdicating long groove 102. In the invention, the abdicating vertical slot 101 and the abdicating long slot 102 not only effectively abdicating the hinged part of the hinge table 146 and the driving arm 145 and the driving block 12, but also effectively enabling the driving block 12 to stably move along a fixed position.

The dynamic sealing mechanism 1412 of the present invention includes a connecting sealing groove 14121 longitudinally disposed on the feeding bin 8 at the upper and lower sides of the abdicating slotted hole 1411 and communicated with the abdicating slotted hole 1411, a sealing protrusion 14122 is disposed at the corresponding position of the connecting block 1410 and the connecting sealing groove 14121, and the sealing protrusion 14122 is movably disposed in the connecting sealing groove 14121. The depth of the connecting sealing groove 14121 is greater than the length of the sealing bump 14122, and when the sealing ram 13 moves up or down, the sealing bump 14122 and the connecting sealing groove 14121 are always dynamically sealed, so that the sealing performance of the feeding bin 8 at the yielding groove hole 1411 is ensured, and the pressure of the feeding and mixing process can be borne.

In the invention, two sides of the driving mechanism 14 are respectively provided with a baffle 18, and the baffles 18 are connected to the outer wall of the feeding bin 8 or/and the valve body 1.

In the invention, a positioning mechanism 19 is arranged on the inner wall of the baffle plate 18. The positioning mechanism 19 comprises a positioning slot 191 arranged on the inner wall of the baffle 18, an elastic positioning convex column is arranged at the position of the driving mechanism 14 corresponding to the positioning slot 191, the elastic positioning convex column comprises a positioning convex column, a mounting slot is arranged in the positioning convex column, a marble is arranged in the mounting slot, and a jacking spring is arranged between the marble and the bottom of the mounting slot.

In the present invention, four positioning slots 191, namely, a first positioning slot, a second positioning slot, a third positioning slot and a fourth positioning slot from bottom to top, may be disposed on the inner side of the baffle 18, and the positioning posts are disposed on the driving handle 143, so that the valve may be in different states by fixing the handle at different positions:

the first state:

when the elastic positioning convex column in the driving handle 143 is located below the first positioning slot hole, the communicating port 5 on the valve body 1 is communicated with the liquid inlet pipe 3, and at this time, the liquid can enter the liquid outlet pipe 20 of the valve body 1 through the liquid guiding passage at the lower end of the valve rod 4 from the liquid inlet pipe 3 through the communicating port 5.

The second state:

when the elastic positioning convex column of the driving handle 143 moves to the second positioning slotted hole, the outer wall of the lower part of the valve rod 4 seals the liquid inlet pipe 3, the driving block is positioned below the pressing water valve switch 11, at this time, the pressing water valve switch 11 is in a closed state, the sealing pressure head 13 seals the conical discharge hole 801 at the lower end of the inner part of the feeding bin 8 under the action of the first spring 1416, and at this time, the valve is in a sealed state.

The third state:

when the elastic positioning convex column of the driving handle 143 moves to the third positioning slot hole, the driving block is located at the position of pressing the water valve switch 11, the pressing water valve switch 11 is squeezed to be in an open state, at this time, the outer wall of the lower part of the valve rod 4 seals the feeding pipe, the sealing pressure head 13 and the conical discharging hole 801 of the lower part of the feeding bin 8 are still sealed, liquid enters the feeding bin 8 from the switching pipe 10, gas in the feeding bin 8 is discharged through the exhaust mechanism 17, and the exhaust mechanism 17 is closed when the liquid in the feeding bin 8 reaches a certain degree.

The fourth state:

when the elastic positioning convex column of the driving handle 143 moves to the fourth positioning slot hole, the sealing pressure head 13 is separated from the conical discharge hole 801 at the lower part of the feeding bin 8, the communicating pipe is in a conducting state, and the material mixed with the liquid in the feeding bin 8 enters the valve rod 4 through the communicating pipe and then enters the liquid outlet 6.

In the invention, the lower end of the sealing pressure head 13 is provided with a conical part which can be attached to the conical discharge hole 801, and the middle of the conical part is provided with a cylindrical sealing head which can seal the inner wall of the connecting pipe 9.

The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a sewage treatment plant, including overhead tank (100) be equipped with sewage inlet tube (120) and oil absorption dirt pipe (130) on the upper end cover (110) of overhead tank (100), oil absorption dirt pipe (130) stretch into in overhead tank (100) upper portion, its characterized in that: a partition plate (140) is arranged in the middle of the pressure tank (100), a stirring shaft (200) is arranged in the pressure tank (100), the upper end of the stirring shaft (200) extends out of the upper end cover (110) and is connected with a driving motor (300) arranged on the pressure tank (100), the lower end of the stirring shaft (200) penetrates through the partition plate (140) and extends into a lower end cover (150) of the pressure tank (100), a water collecting disc (400) is movably sleeved on the stirring shaft (200) below the partition plate (140), a communicating hole (160) capable of communicating the upper pressure tank (100) of the partition plate (140) with the water collecting disc (400) is arranged on the partition plate (140), an electromagnetic valve (180) is arranged in the communicating hole (160), a plurality of centrifugal filters (500) are uniformly distributed and connected below the water collecting disc (400), and a connecting sleeve ring (600) is sleeved on the lower portion of the stirring shaft (200), the lower part of the centrifugal filter (500) is connected with the connecting sleeve ring (600) through a connecting rod (610), a rotating disc (620) is arranged in a lower end cover (150) of the pressure tank (100), a guide cylinder (510) is arranged at the lower end of the centrifugal filter (500), a yielding through hole (630) is arranged at the corresponding position of the rotating disc (620) and the guide cylinder (510), the guide cylinder (510) is arranged in the yielding through hole (630), a supporting spring (640) is arranged between the rotating disc (620) and the connecting rod (610), a linkage seat (210) is arranged on a stirring shaft (200) below the water collecting disc (400), a combination mechanism (700) which can enable the centrifugal filter (500) to rotate along with the stirring shaft (200) when the water collecting disc (400) descends and is connected with the linkage seat (210) is arranged between the linkage seat (210) and the water collecting disc (400), an electrostatic field generating device (800) is arranged in the pressure tank (100) above the partition plate (140), an aeration mechanism (900) is arranged on a stirring shaft (200) in the pressure tank (100) above the partition plate (140), the water collecting tray (400) comprises a conical tray body (410), a conical connecting boss (420) is arranged in the middle of the upper end of the conical tray body (410), a communicating slotted hole (430) is arranged in the middle of the conical connecting boss (420), the stirring shaft (200) is arranged in the communicating slotted hole (430), a conducting hole (440) is arranged above the conical tray body (410), a connecting pipe (450) is arranged between the conducting hole (440) and the water inlet end of the centrifugal filter (500), dynamic sealing is formed between the outer wall of the upper end of the conical tray body (410) and the inner wall of the pressure tank (100), and the combination mechanism (700) comprises positioning convex strips (710) arranged on the outer wall of the lower end face of the conical tray body (410) at intervals, be equipped with toper scarce groove (720) in linkage seat (210) upper end be equipped with a plurality of spacing sand grip (730) on the surface of toper scarce groove (720) interval, the clearance between two adjacent spacing sand grip (730) can hold location sand grip (710).

2. The sewage treatment apparatus according to claim 1, wherein: the aeration mechanism (900) comprises aeration pipes (910) uniformly distributed on the outer wall of a stirring shaft (200), a plurality of aeration holes (920) are densely distributed on the aeration pipes (910), an air supply channel (930) is arranged in the stirring shaft (200), an air conveying vertical pipe (940) is arranged in a lower end cover (150), an insertion pipe (950) is arranged at the upper end of the air conveying vertical pipe (940), the insertion pipe (950) is inserted in the air supply channel (930), an air conveying transverse pipe (960) is arranged on the lower end cover (150), one end of the air conveying transverse pipe (960) is connected with the lower end of the air conveying vertical pipe (940), and one end of the air conveying transverse pipe (960) extends out of the lower end cover (150).

3. The sewage treatment apparatus according to claim 1, wherein: the electrostatic field generating device (800) comprises a plurality of negative coils (810) which are arranged in the pressure tank (100) from top to bottom at intervals, the negative coils (810) are connected through a negative lead (820), a conductive sliding ring is arranged at the upper end of the upper end cover (110), the stirring shaft (200) is arranged in the conductive sliding ring, the conductive sliding ring is connected with a positive lead (830), and the positive lead (830) penetrates out of the upper end cover (110).

4. The sewage treatment apparatus according to claim 1, wherein: a pressure sensor is arranged in the pressure tank (100) above the division layer plate (140).

5. The sewage treatment apparatus according to claim 1, wherein: the sewage treatment device is characterized in that a dosing valve (1000) is arranged on the sewage inlet pipe (120), the dosing valve (1000) comprises a valve body (1), a valve cavity (2) is arranged in the valve body (1), a liquid inlet pipe (3) communicated with the valve cavity (2) is arranged in the middle of the valve body (1), a liquid outlet pipe (20) is arranged at the lower part of the valve body (1), a valve rod (4) dynamically sealed with the inner wall of the valve cavity (2) is movably arranged in the valve body (1), a communication port (5) capable of being communicated with the liquid inlet pipe (3) is arranged on the outer wall of the lower part of the valve rod (4), a liquid outlet (6) is arranged at the lower end of the valve rod (4), a channel (7) is arranged in the valve rod (4), a feeding bin (8) is arranged above the valve body (1), a connecting pipe (9) is arranged at the lower end of the feeding bin (8), a movable sleeve at the upper end of the valve rod (4) is sleeved on the outer wall of the connecting pipe (9) and dynamically sealed with the outer wall of the connecting pipe (9), be equipped with on feed liquor pipe (3) with add switching tube (10) that feed bin (8) are linked together switching tube (10) middle part is equipped with presses down water valve switch (11) be equipped with on valve rod (4) upper portion outer wall and drive block (12) that can drive and press down water valve switch (11) and open add the feed bin (8) in be equipped with sealed pressure head (13) that can seal connecting pipe (9) import be equipped with in valve rod (4) middle part can communicate feed liquor pipe (3) with the intercommunication mouth (5) of passageway (7) be equipped with on valve body (1) and drive when valve rod (4) that can order to drive valve rod (4) removal messenger intercommunication mouth (5) downside seals feed liquor pipe (3) and press down water valve switch (11) and sealed pressure head (13) actuating mechanism (14) open add feed bin (8) upper end and be equipped with charge door (15), the charging opening (15) is provided with a sealing cover (16) which can be separated from the charging bin (8).

6. The sewage treatment apparatus according to claim 5, wherein: an air exhaust mechanism (17) is arranged on the sealing cover (16), the air exhaust mechanism (17) comprises an air exhaust rod (171), a mounting hole (172) is arranged in the middle of the sealing cover (16), the exhaust rod (171) is movably arranged in the mounting hole (172), an exhaust channel (170) is arranged in the upper part of the exhaust rod (171), an exhaust port (173) communicated with the exhaust channel (170) is arranged in the middle of the exhaust rod (171), a floating plate (174) is sleeved on the exhaust rod (171) below the sealing cover (16), a limiting round table (1710) which can prevent the floating plate (174) from separating is arranged at the lower end of the exhaust rod (171), an exhaust groove (175) is arranged on the outer wall of the floating plate (174), and a sealing block (176) capable of sealing the exhaust groove (175) is arranged at the position, corresponding to the exhaust groove (175), on the inner wall of the feeding bin (8).

7. The sewage treatment apparatus according to claim 5, wherein: the driving mechanism (14) comprises a hinge seat (141) arranged on the outer wall of the upper part of the valve body (1), a connecting arm (142) is hinged on the hinge seat (141), a driving handle (143) is hinged on the outer end of the connecting arm (142), a hinge middle shaft (144) is arranged in the middle of the driving handle (143), a driving arm (145) is hinged on the hinge middle shaft (144), a hinge table (146) is arranged on the outer wall of the upper part of the valve rod (4), the upper end of the driving arm (145) is hinged on the hinge table (146), a transmission arm (147) is hinged on the upper part of the driving arm (145), a driving convex column (148) is arranged at the upper end of the transmission arm (147), a guide rod (149) is arranged on the outer side of the sealing pressure head (13), the lower part of the guide rod (149) is connected with the sealing pressure head (13) through a connecting block (1410), a yielding groove hole (1411) is arranged at the lower part of the feeding bin (8), the connecting block (1410) is arranged in an abdicating slotted hole (1411), a dynamic sealing mechanism (1412) is arranged between the connecting block (1410) and the abdicating slotted hole (1411), a waist-shaped long groove (1413) is arranged at the lower part of the guide rod (149), the driving convex column (148) is movably arranged in the waist-shaped long groove (1413), a guide ring (1415) is arranged on the outer wall of the feeding bin (8), the guide rod (149) is movably arranged in the guide ring (1415), a first spring (1416) is sleeved on the guide rod (149) between the guide ring (1415) and the driving convex column (148), the driving block (12) is arranged at a position corresponding to the hinged platform (146) and the pressing water valve switch (11), a second spring (1417) is sleeved outside a connecting pipe (9) between the feeding bin (146) and the hinged platform (1418), and the dynamic sealing mechanism (1412) is longitudinally arranged on the abdicating slotted hole (1), Go up and with the connection seal groove (14121) of abdicating slotted hole (1411) intercommunication on the reinforced storehouse (8) of lower both sides be equipped with sealing lug (14122) on connecting block (1410) and the corresponding position of connection seal groove (14121), sealing lug (14122) activity sets up in connecting seal groove (14121).

8. The sewage treatment apparatus according to claim 5, wherein: the improved feeding device is characterized in that two sides of the driving mechanism (14) are respectively provided with a baffle (18), the baffle (18) is connected to the outer wall of the feeding bin (8) or/and the outer wall of the valve body (1), the inner wall of the baffle (18) is provided with a positioning mechanism (19), the positioning mechanism (19) comprises a positioning slotted hole (191) formed in the inner wall of the baffle (18), an elastic positioning convex column is arranged at a position corresponding to the positioning slotted hole (191) of the driving mechanism (14), the elastic positioning convex column comprises the positioning convex column, an installation slotted hole is formed in the positioning convex column, a marble is arranged in the installation slotted hole, and a jacking spring is arranged between the marble and the bottom of the installation slotted hole.