CN112978840B - Papermaking sewage air supporting treatment facility - Google Patents
Papermaking sewage air supporting treatment facility Download PDFInfo
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- CN112978840B CN112978840B CN202110224413.8A CN202110224413A CN112978840B CN 112978840 B CN112978840 B CN 112978840B CN 202110224413 A CN202110224413 A CN 202110224413A CN 112978840 B CN112978840 B CN 112978840B
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- scraper
- main body
- plate
- chain transmission
- slag scraping
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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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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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
- C02F11/00—Treatment of sludge; Devices therefor
Abstract
The application relates to papermaking sewage air-flotation treatment equipment, which comprises an air-flotation tank, wherein the air-flotation tank is provided with a separation area and a sludge area; the upper part of the floating pool is provided with a slag scraping device, the slag scraping device comprises two groups of chain transmission assemblies, a scraper assembly and a driving assembly, and the driving assembly drives the chain transmission assemblies to operate; the scraper component comprises a scraper main body, and two sides of the scraper main body in the length direction are respectively connected with the two groups of chain transmission components; connecting rods are respectively arranged at two sides of the scraper, a scraper plate is arranged between the two connecting rods, the scraper plate is far away from the chain transmission assembly relative to the scraper main body, rotating shafts are arranged at two opposite sides of the scraper plate, and the two rotating shafts are respectively rotatably connected with one ends of the connecting rods far away from the scraper main body; a magnet is arranged on one side of the scraper plate close to the scraper main body, and the scraper main body is made of ferromagnetic materials; the upper part of the air floatation tank is provided with a blocking piece which forces the slag scraping plate to turn over in the sludge area. This application can reduce and scrape the adnexed dross of sediment device and repeat in getting into the air supporting pond to the sediment efficiency is scraped in the improvement.
Description
Technical Field
The application relates to the technical field of sewage treatment, in particular to papermaking sewage air floatation treatment equipment.
Background
The dissolved air floatation machine is a common pretreatment device in sewage treatment, and the main principle is that tiny bubbles generated by a dissolved air system are contacted with suspended solid and oil in sewage, impurities are brought to the water surface under the action of bubble buoyancy, and the impurities are scraped away by a slag scraping device to achieve the purpose of purifying water quality. The method is generally applied to pretreatment workshop sections in industries such as papermaking, plastic washing, petroleum, printing and dyeing, slaughtering, food, breeding and the like, and also applied to deep purification workshop sections of effluent.
In the working process of the slag scraping device, more scum is inevitably attached to the surface of the slag scraping device, and after the scraper blade assembly leaves the separation area, the scraper blade assembly circularly moves under the driving of the chain transmission assembly to enter the separation area again, so that the scum attached to the scraper blade extends below the liquid level of the separation area again to enter the water in the separation area again, and the slag scraping efficiency is influenced.
Disclosure of Invention
In order to reduce the circumstances that the attached dross of scraping sediment device surface influences in scraping the separation zone and scrapes sediment efficiency scraping sediment in scraping sediment process repeatedly, this application provides a papermaking sewage air supporting treatment facility.
The application provides a papermaking sewage air supporting treatment facility adopts following technical scheme:
an air floatation treatment device for papermaking sewage comprises an air floatation tank, wherein the air floatation tank is provided with a separation area and a sludge area; the upper part of the air floatation tank is provided with a slag scraping device, the slag scraping device comprises two groups of chain transmission assemblies, a scraper assembly and a driving assembly, the two groups of chain transmission assemblies are respectively positioned at two opposite sides of the air floatation tank, and the driving assembly drives the chain transmission assemblies to operate; the scraper component comprises a scraper main body, and two sides of the scraper main body in the length direction are respectively connected with the two groups of chain transmission components; connecting rods are respectively arranged on two sides of the scraper main body in the direction, a scraper plate is arranged between the two connecting rods, and the scraper plate is far away from the chain transmission assembly relative to the scraper main body; two opposite sides of the scraper plate are provided with rotating shafts, and the two rotating shafts are respectively and rotatably connected with one end of the connecting rod, which is far away from the scraper plate main body; a magnet is arranged on one side, close to the scraper main body, of the scraper plate, and the scraper main body is made of a ferromagnetic material; and the upper part of the air floatation tank is provided with a blocking piece which forces the slag scraping plate to turn over in the sludge area.
By adopting the technical scheme, in the working process of the slag scraping device, the driving component drives the scraper component to operate through the chain transmission component; when the scraper blade assembly advances from the separation area of the air floatation tank to the sludge area, a scraper blade of the scraper blade assembly extends into the liquid level of the separation area to scrape scum floating on the liquid level so as to scrape the scum in the separation area into the sludge area; when the scum board enters the sludge area from the separation area, the scum board turns downwards under the action of the barrier piece, and the scum board turns over to dump scum on the surface of the scum board to the sludge area along with the turning of the scum board, so that the situation that the scum left on the surface of the scum board enters water in the separation area is reduced, and the working efficiency of the scum device is improved; when the scraper plate moves above the chain transmission assembly along with the chain transmission assembly, the relative position of the scraper plate and the scraper main body is gradually restored to the initial state, and the relative position of the scraper plate and the scraper main body is kept under the action of the magnetic attraction force between the magnet and the scraper main body, so that the slag scraping operation can be performed.
Optionally, the blocking member is a blocking rod, the blocking rod is located in the sludge area, and the length direction of the blocking rod faces the length direction of the scraper blade main body; one side part of the slag scraping plate, which is far away from the chain transmission assembly, is exposed between the two connecting rods, and the stop lever blocks the movement of the part, which is exposed between the two connecting rods, of the slag scraping plate in the sludge area.
By adopting the technical scheme, when the scraper blade assembly enters the sludge area from the separation area, the stop lever has an obstruction function on the part of the scraper blade, which is exposed between the two connecting rods; under the drive of the chain transmission assembly, a large interaction force is generated between the slag scraping plate and the stop lever, so that the slag scraping plate is forced to turn downwards around the rotating shaft; after the slag scraping plate is turned downwards, the working surface of the slag scraping plate is abutted to the stop lever under the action of gravity, and the slag scraping plate is gradually far away from the stop lever along with the operation of the chain transmission assembly, so that the surface of the slag scraping plate moves relative to the stop lever, and the stop lever has a scraping and cleaning effect on the surface of the slag scraping plate.
Optionally, the slag scraping plate and the blocking rod are both made of ferromagnetic materials, and the cross section of the blocking rod is polygonal.
By adopting the technical scheme, the slag scraping plate is made of ferromagnetic materials, so that the slag scraping plate is magnetized by the magnet, and magnetic attraction is generated on the stop lever which is also made of the ferromagnetic materials after the slag scraping plate is magnetized; in the process that the slag scraping plate moves away from the stop lever along with the scraper component, the slag scraping plate can overcome gravity and keep longer contact with the stop lever under the action of magnetic attraction, so that the cleaning effect of the stop lever on the slag scraping plate is enhanced, and the surface of the stop lever is provided with an edge which is beneficial to the stop lever to play a role in scraping the surface of the slag scraping plate; before the scum board leaves the stop lever along with the movement of the scraper component, the magnet on the scum board is gradually close to the stop lever, so that the magnetic attraction between the stop lever and the scum board is gradually strengthened until the scum board leaves the stop lever, thereby being beneficial to keeping the scum board in contact with the stop lever.
Optionally, the two connecting rods are connected with the scraper main body in a sliding manner along the axial direction, and each connecting rod is provided with a limiting piece for preventing the connecting rod from separating from the scraper main body; the air supporting pond is equipped with and is used for separating the disengagement zone with the baffle in mud district, the top edge connection of baffle is equipped with the deflector, the deflector is located one side at disengagement zone place, the deflector is along being close to the direction in mud district risees gradually, the deflector supplies the scum board is kept away from one side butt of scraper blade main part.
By adopting the technical scheme, when the scraper blade assembly moves from the separation area to the sludge area, the slag scraping plate of the scraper blade assembly is abutted against the upper surface of the guide plate, and the slag scraping plate drives the connecting rod to slide upwards relative to the scraper blade main body under the guiding action of the guide plate; in the process that the scum board moves towards the direction close to the sludge, the scum between the scum board and the partition board is gradually scraped into the sludge area by the scum board; under the combined action of the guide plate and the slag scraping plate, the influence on the slag scraping effect caused by the fact that the slag scraping plate avoids the partition plate to keep a gap can be reduced as much as possible.
Optionally, the guide plate is hinged to the partition plate, a plurality of rib plates are fixedly arranged on the lower surface of the guide plate, and the side edges of the rib plates are abutted to the side wall of the partition plate close to the separation area.
By adopting the technical scheme, the guide plate is hinged with the partition plate, the guide plate is kept in an inclined state by abutting the side wall of the partition plate through the rib plate, and the guide plate is hinged with the partition plate, so that the lower surface of the guide plate and the side wall of the partition plate can be conveniently cleaned by turning over the guide plate.
Optionally, one side of the guide plate, which is far away from the partition plate, extends into the liquid level of the separation area, and one side of the guide plate, which is far away from the partition plate, is provided with a plurality of through holes.
By adopting the technical scheme, in the process of scraping slag by extending the slag scraping plate below the liquid level of the separation area, the slag scraping plate simultaneously pushes the water body close to the liquid level in the separation area, so that the scum moves along with the water flow in the direction close to the sludge area; through the arrangement of the through hole, water can flow to the lower part of the guide plate in time when approaching the guide plate, so that the situation that water flows into a sludge area under the pushing of the slag scraping plate is reduced.
Optionally, the scraper main body is provided with two groups of bolts, each group of bolts at least includes two bolts, and the bolts in the same group are arranged along the length direction of the connecting rod; the connecting rod is provided with a sliding groove which is a through groove, the width of the sliding groove is matched with the diameter of a bolt body of the bolt, the bolt penetrates through the sliding groove and is in threaded connection with the scraper main body, one end of the bolt penetrating through the scraper main body is in threaded connection with a nut, and the nut is abutted against the scraper main body; and a space allowance is reserved between one bolt in each group of bolts, which is far away from the chain transmission assembly, and the groove wall of the sliding groove, which is far away from the side of the chain transmission assembly.
By adopting the technical scheme, the connecting rod realizes sliding connection through the matching of the sliding groove and the bolt, so that the connecting mode of the connecting rod is simple and convenient; gaps between the connecting rod and the bolt cap and between the connecting rod and the scraper can be adjusted by adjusting the distance between the bolt cap of the bolt and the scraper main body, so that the tightness of the connecting rod during up-and-down sliding can be easily adjusted; the nut is connected with the bolt, so that the stability between the bolt and the connecting plate can be guaranteed.
Optionally, a stepped groove is formed in one side, close to the scraper main body, of the sliding groove, a spring is arranged in the stepped groove, the length direction of the spring faces to the axial direction of the connecting rod, and the spring is far away from the chain transmission assembly relative to the two bolts; when the connecting rod slides in a direction close to the chain transmission assembly, the spring is compressed.
By adopting the technical scheme, when the connecting rod slides upwards under the guiding action of the guide plate, the distance between the bolt far away from the chain transmission assembly and the groove wall of the stepped groove far away from the side of the chain transmission assembly is reduced, so that the spring is compressed; when the scum board is instantaneously separated from the guide board, the elastic potential energy of the spring is instantaneously released, and the scum board is instantaneously downwards moved and stopped after being separated from the guide board, so that the scum on the scum board is instantaneously accelerated and then separated from the scum board under the action of inertia, thereby being beneficial to separating the scum from the surface of the scum board.
Optionally, the ladder groove is followed the length direction total length in groove of sliding sets up, bolt threaded connection has square nut, square nut is located the ladder inslot, square nut's length of side is less than or equal to the width in ladder groove.
By adopting the technical scheme, when the connecting rod axially slides relative to the scraper main body, the stepped groove moves relative to the square nut, so that two opposite side walls of the square nut form a guiding effect on the stepped groove, and the stability of the sliding motion of the connecting rod is improved; when the connection between the scraper main body and the bolt has the situation of tooth slipping, the square nut and the nut can be simultaneously screwed to clamp the scraper main body, so that the connection between the bolt and the scraper main body is maintained; when the bolt, the square nut or the nut is damaged by threads, the bolt, the square nut or the nut can be replaced in time, and the connecting function between the connecting rod and the scraper main body is kept.
Optionally, the square nut and the scraper blade main body are provided with a bolt in a penetrating manner.
Through adopting above-mentioned technical scheme, during bolt and the relative helical motion of square nut, square nut easily receives the relative connecting rod of the frictional force effect rotation of bolt to the easy closed angle butt ladder groove's that makes square nut all sides cell wall hinders the gliding movement of connecting rod, through setting up the bolt, makes square nut receive the positioning action, is favorable to making square nut's both sides wall and ladder groove keep being parallel to each other, makes square nut reduce the hindrance effect to the slide bar when keeping connecting rod guide effect.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the scraper component comprises a scraper main body and a scraper plate, the scraper plate and the scraper main body are attracted by magnetic attraction, and after the scraper plate enters the sludge area from the separation area, the scraper plate is turned downwards under the action of the blocking piece, so that scum on the attachment surface of the scraper plate is poured towards the sludge area, thereby reducing the condition that the scum residual on the surface of the scraper plate enters water in the separation area, and being beneficial to providing the working efficiency of the scraper device;
2. under the guiding action of the guide plate, the slag scraping plate drives the connecting rod and the scraper main body to relatively slide; under the combined action of the guide plate and the slag scraping plate, the influence on the slag scraping effect caused by the fact that the slag scraping plate avoids the partition plate to keep a gap can be reduced as much as possible.
Drawings
FIG. 1 is a schematic view of the overall structure of the present embodiment;
FIG. 2 is a sectional view of the embodiment for showing the positional relationship between the slag scraping device and the floatation tank;
FIG. 3 is a schematic view of the squeegee assembly of the present embodiment;
FIG. 4 is an exploded view of the squeegee assembly of the present embodiment;
FIG. 5 is a sectional view showing the connection relationship between the connecting rod and the squeegee main body according to the embodiment;
fig. 6 is a partial enlarged view at a in fig. 4.
Description of the reference numerals: 1. an air flotation tank; 11. a reaction zone; 12. a contact zone; 13. a separation zone; 131. a partition plate; 14. a sludge zone; 2. a clean water tank; 21. a water collection pipe; 3. a dissolved air tank; 4. a slag scraping device; 41. a chain drive assembly; 411. a sprocket; 412. a chain; 413. a drive shaft; 414. a pedestal bearing; 42. a squeegee assembly; 421. a squeegee body; 422. a slag scraping plate; 4221. a rotating shaft; 4222. a magnet; 423. a connecting rod; 4231. a sliding groove; 4232. a stepped groove; 424. a stopper; 4241. a bolt; 425. a square nut; 426. a bolt; 427. a nut; 428. a spring; 43. a drive assembly; 431. a motor; 432. a speed reducer; 5. a guide plate; 51. a through hole; 52. a rib plate; 6. a stopper; 61. a stop lever.
Detailed Description
The following application is described in further detail in connection with figures 1-6.
The embodiment of the application discloses papermaking sewage air supporting treatment facility. Referring to fig. 1, the papermaking sewage air-flotation treatment equipment comprises a dissolved air tank 3, an air-flotation tank 1 and a clean water tank 2, wherein the air-flotation tank 1 is provided with a reaction area 11, a contact area 12, a separation area 13 and a sludge area 14, and the upper part of the air-flotation tank 1 is provided with a residue scraping device 4; the sewage enters an air floatation reaction area 11 for flocculation reaction and then enters an air floatation contact area 12, wherein in the contact area 12, micro bubbles in the dissolved air water from the dissolved air tank 3 attach to flocculated suspended matters and enter a separation area 13, and the flocculated suspended matters and the bubbles rise to the liquid level together to form scum; the scum is scraped to the sludge area 14 by the scum scraping device 4, and the clear water at the lower layer of the separation area 13 automatically flows to the clear water tank 2 through the water collecting pipe 21.
With reference to fig. 1 and 2, the slag scraping device 4 comprises two sets of chain transmission assemblies 41, scraper assemblies 42 and drive assemblies 43; the two groups of chain transmission assemblies 41 are respectively positioned at two opposite sides of the air floatation tank 1, and the chain transmission assemblies 41 span the separation area 13 and the sludge area 14 of the air floatation tank 1; the chain transmission assembly 41 comprises two chain wheels 411 and a chain 412, the two chain wheels 411 of the two groups of chain transmission assemblies 41 are oppositely arranged, a transmission shaft 413 is connected between the two chain wheels 411 which are oppositely arranged on the two groups of chain transmission assemblies 41, two ends of the two transmission shafts 413 are respectively provided with a bearing with a seat 414, and the bearing with a seat 414 is fixed on the upper surface of the air flotation tank 1; the driving assembly 43 comprises a motor 431 and a speed reducer 432, wherein the output end of the motor 431 is connected with the input end of the speed reducer 432, and the output end of the speed reducer 432 is connected with one of the transmission shafts 413.
Referring to fig. 1 and 3, the squeegee assembly 42 includes a squeegee body 421, a squeegee plate 422, and two connecting rods 423; the scraper main body 421 and the scraper 422 are both made of ferromagnetic material, such as martensitic stainless steel; the scraper main body 421 is a rectangular structure, and two sides of the scraper main body 421 in the length direction are respectively fixedly connected with one chain link of the two chains 412; the cross sections of the two connecting rods 423 are rectangular, the two connecting rods 423 are respectively located on two sides of the scraper main body 421 in the length direction, the axial directions of the two connecting rods 423 face the width direction of the scraper main body 421, and the scraper plates 422 are far away from the chain transmission assembly 41 relative to the scraper main body 421; the scraper 422 is located between the two connecting rods 423, two opposite sides of the scraper 422 are respectively connected to the connecting rods 423, and a side of the scraper 422 away from the chain drive assembly 41 is partially exposed between the two connecting rods 423.
The driving assembly 43 drives the chain 412 of the chain transmission assembly 41 to circulate, thereby driving the scraper assembly 42 to move, so that the scraper plate 422 of the scraper assembly scrapes the scum on the liquid surface of the separation area 13 into the sludge area 14.
Referring to fig. 2 and 3, the connecting rod 423 is provided with a sliding groove 4231, the sliding groove 4231 penetrates through two opposite side surfaces of the connecting rod 423, a notch of the sliding groove 4231 faces the surface of the scraper main body 421, and the length direction of the sliding groove 4231 faces the axial direction of the connecting rod 423; the scraper main body 421 is provided with two groups of bolts 4241, the number of each group of bolts 4241 is two, the two bolts 4241 in the same group are arranged along the width direction of the scraper main body 421, and the bolts 4241 penetrate through the sliding grooves 4231 of the connecting rod 423 to be in threaded connection with the scraper main body 421, so that the bolts 4241 play a role of a limiting part 424 on the connecting rod 423; the width of the sliding groove 4231 is matched with the bolt body size of the bolt 4241, namely the width of the sliding groove 4231 is larger than the bolt body diameter of the bolt 4241 and smaller than the maximum size of a bolt cap of the bolt 4241 in a radial plane, wherein a space allowance for the bolt 4241 to move relative to the sliding groove 4231 is reserved between one bolt 4241 far away from the chain transmission assembly 41 and the groove wall of the sliding groove 4231 on the side far away from the chain transmission assembly 41; a partition plate 131 is arranged between the separation area 13 and the sludge area 14, the upper edge of the partition plate 131 is connected with a guide plate 5, the upper surface of the guide plate 5 is abutted by a slag scraping plate 422, the guide plate 5 is located in the separation area 13, and the guide plate 5 gradually rises along the direction close to the partition plate 131.
In the process of scraping scum by the scum board 422, when the scum board 422 moves from the separation area 13 to the sludge area 14, under the guiding action of the guide plate 5, the scum board 422 drives the connecting rod 423 to gradually slide upwards, so that scum is scraped into the sludge area 14 from the liquid surface of the separation area 13; under the combined action of the re-scraping plate 422 and the guide plate 5, the scraping plate 422 scrapes the scum into the sludge area 14 as much as possible, so that the scum is prevented from flowing back to the separation area 13 from the gap between the scraping plate 422 and the partition 131 because the scraping plate 422 is close to the partition 131 and the gap is kept between the scraping plate and the partition 131.
Referring to fig. 1 and 2, the higher side of the guide plate 5 is hinged to the upper edge of the partition 131, a plurality of ribs 52 are vertically arranged on the lower surface of the guide plate 5, and one side of each rib 52 abuts against the side wall of the partition 131 close to the separation area 13, so that the guide plate 5 is positioned; the guide plate 5 is hinged with the partition plate 131, so that the partition plate 131 and the air floatation tank 1 can be cleaned conveniently after the partition plate 131 is turned over; one side of the guide plate 5, which is far away from the partition plate 131, extends into the liquid level of the separation area 13, one side of the guide plate 5, which is far away from the partition plate 131, is provided with a plurality of through holes 51, when the scum board 422 scrapes scum, the water body on the upper part of the separation area 13 is driven to form water flow, and when the scum board 422 is close to the partition plate 131, the water can flow into the lower part of the guide plate 5 from the through holes 51 on the guide plate 5, so that the condition that the water enters a sludge tank along the surface of the guide plate 5 is reduced.
Referring to fig. 5 and 6, a stepped groove 4232 is formed in one side, close to the scraper main body 421, of the sliding groove 4231 of the connecting rod 423, a square nut 425 is in threaded connection with the bolt 4241, the square nut 425 is located in the stepped groove 4232, the side length of the square nut 425 is smaller than the width of the stepped groove 4232 and larger than the width of the sliding groove 4231, and a bolt 426 is jointly inserted between the square nut 425 and the scraper main body 421; the bolt body of the bolt 4241 is threaded with a nut 427 after passing through the scraper main body 421.
When the square nut 425 and the nut 427 are simultaneously locked, a clamping effect is formed on the scraper main body 421, so that the connection between the bolt 4241 and the scraper main body 421 is strengthened; when the connection between the bolts 4241 of the scraper has the situation of sliding teeth, the nuts 427 and the square nuts 425 can keep the bolts 4241 and the scraper main body 421 in a connection relation; the square nut 425 has a guiding function on the sliding motion of the connecting rod 423 along the axial direction, and the bolt 426 has a positioning function on the square nut 425, so that the rotation of the square nut 425 under the driving of the friction force of the spiral motion can be reduced, and the influence of the circumferential sharp angle of the square nut 425 on the groove wall of the stepped groove 4232 on the sliding motion of the connecting rod 423 can be reduced.
Referring to fig. 5, a spring 428 is arranged in the stepped groove 4232, one end of the spring 428 is abutted with the square nut 425 far away from the chain transmission assembly 41, and the other end of the spring 428 is abutted with the groove wall of the stepped groove 4232 far away from the side of the chain transmission assembly 41; when the connecting rod 423 is driven by the slag scraping plate 422 to slide upwards under the guiding action of the guide plate 5, the spring 428 is compressed; when the scraper 422 is instantaneously separated from the guide plate 5, the elastic potential energy accumulated by the compression of the spring 428 is instantaneously released, so that the scraper 422 is instantaneously moved downward and then stops, and the scum on the surface of the scraper 422 is separated from the scraper 422 under the action of inertia.
Referring to fig. 2 and 4, two opposite sides of the scum board 422 are provided with rotating shafts 4221, and the two rotating shafts 4221 are respectively rotatably connected with one end of the connecting rod 423 far away from the scum body 421; a magnet 4222 is arranged on one side of the scraper blade 422 close to the scraper blade main body 421, and the scraper blade main body 421 forces the magnet 4222 to be close to the scraper blade main body 421 through magnetic attraction; the upper part of the sludge area 14 is provided with a blocking piece 6, the blocking piece 6 is a blocking rod 61, the blocking rod 61 is made of ferromagnetic materials, the cross section of the blocking rod 61 is square, the blocking rod 61 is parallel to the length direction of the scraper main body 421, and two ends of the blocking rod 61 are fixedly connected with the tank walls on two opposite sides of the air floatation tank 1 respectively; the installation height of the blocking rod 61 is lower than the lowest point of the connecting rod 423 and higher than the lowest point of the scraper 422 in the state that the magnet 4222 is attracted with the scraper main body 421.
When the scraper assembly 42 is moved in the direction away from the separation area 13 after being separated from the guide plate 5, the part of the scraper 422 exposed between the two connecting rods 423 is blocked by the blocking rod 61; under the action of the stop lever 61, the scum board 422 overcomes the magnetic attraction of the scraper main body 421 to the magnet 4222 and falls downwards, so that scum attached to the scum board 422 falls towards the sludge area 14; when the slag scraping plate 422 turns downwards, the surface of the slag scraping plate abuts against the stop lever 61, magnetic attraction is generated on the stop lever 61 after the slag scraping plate 422 is magnetized by the magnet 4222, the surface of the slag scraping plate 422 scrapes relative to the stop lever 61 along with the continuous movement of the scraper component 42, the scum on the surface of the slag scraping plate 422 is further scraped by the edge of the surface of the stop lever 61, and the time for the slag scraping plate 422 to be in relative contact with the stop lever 61 is prolonged by the magnetic attraction between the slag scraping plate 422 and the stop lever.
The implementation principle of the papermaking sewage air-flotation treatment equipment in the embodiment of the application is as follows: in the working process of the air flotation tank 1, scum above the liquid level of the separation area 13 is scraped into the sludge area 14 through the scum scraping device 4; during the operation of the slag scraping device 4, the driving assembly 43 drives the scraper assembly 42 to operate through the chain transmission assembly 41.
When the chain 412 of the chain transmission assembly 41 drives the scraper assembly 42 to advance from the separation area 13 to the sludge area 14 of the air flotation tank 1, the scraper plate 422 of the scraper assembly 42 extends into the liquid level of the separation area 13 to scrape scum on the liquid level of the separation area 13 to the sludge area 14; when the scum board 422 abuts against the upper surface of the guide plate 5, the scum board 422 drives the connecting rod 423 to slide upwards under the guiding action of the guide plate 5, the scum board 422 scrapes the scum into the sludge area 14 along the guide plate 5 as much as possible, and the spring 428 in the stepped groove 4232 of the guide rod is compressed; when the scum is scraped into the sludge area 14 by the scum scraper 422, it is instantaneously separated from the guide plate 5, and the scum attached to the surface of the scum scraper 422 falls into the sludge area 14 by inertia.
After the scum board 422 enters the sludge area 14, the scum board 422 overturns downwards under the blocking action of the stop lever 61, so that scum on the surface of the scum board 422 topples over towards the sludge area 14 along with the overturning action of the scum board 422, the scum board 422 overturns downwards and abuts against the stop lever 61, and is attracted with the stop lever 61 through magnetic attraction under the magnetization action of the magnet 4222, along with the continuous movement of the scraper component 42, the surface of the scum board 422 and the surface of the stop lever 61 move relatively to scrape, so that the scum on the surface of the scum board 422 is further scraped, thereby reducing the condition that the scum left on the surface of the scum board 422 enters the separation area 13, and being beneficial to providing the working efficiency of the scum device 4.
When the scraper 422 moves above the chain transmission assembly 41 along with the chain transmission assembly 41, the relative position of the scraper 422 and the scraper main body 421 gradually returns to the initial state, and the magnetic attraction between the magnet 4222 and the scraper main body 421 maintains the relative position of the scraper main body 421, so that the scraping operation can be performed.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. An air floatation treatment device for papermaking sewage comprises an air floatation tank (1), wherein the air floatation tank (1) is provided with a separation area (13) and a sludge area (14); the upper part of the air flotation tank (1) is provided with a slag scraping device (4), the slag scraping device (4) comprises two groups of chain transmission assemblies (41), a scraper assembly (42) and a driving assembly (43), the two groups of chain transmission assemblies (41) are respectively positioned at two opposite sides of the air flotation tank (1), and the driving assembly (43) drives the chain transmission assemblies (41) to operate; the scraper component (42) comprises a scraper main body (421), and two sides of the scraper main body (421) in the length direction are respectively connected with the two groups of chain transmission components (41); connecting rods (423) are respectively arranged on two sides of the scraper main body (421) in the length direction, a scraper plate (422) is arranged between the two connecting rods (423), and the scraper plate (422) is far away from the chain transmission assembly (41) relative to the scraper main body (421); two opposite sides of the slag scraping plate (422) are provided with rotating shafts (4221), and the two rotating shafts (4221) are respectively and rotatably connected with one end, far away from the scraper main body (421), of the connecting rod (423); a magnet (4222) is arranged on one side, close to the scraper main body (421), of the scraper plate (422), and the scraper main body (421) is made of a ferromagnetic material; a blocking piece (6) is arranged at the upper part of the air floatation tank (1), and the blocking piece (6) forces the slag scraping plate (422) to turn over in the sludge area (14); the two connecting rods (423) are connected with the scraper main body (421) in a sliding manner along the axial direction, and the connecting rods (423) are provided with limiting pieces (424) for preventing the connecting rods from being separated from the scraper main body (421); the air floatation tank (1) is provided with a partition plate (131) for separating the separation area (13) from the sludge area (14), the upper edge of the partition plate (131) is connected with a guide plate (5), the guide plate (5) is positioned on one side where the separation area (13) is positioned, the guide plate (5) is gradually raised along the direction close to the sludge area (14), and one side, far away from the scraper blade main body (421), of the scraper blade (422) is abutted by the guide plate (5); the scraper main body (421) is provided with two groups of bolts (4241), each group of bolts (4241) at least comprises two, and the bolts (4241) in the same group are arranged along the length direction of the connecting rod (423); the connecting rod (423) is provided with a sliding groove (4231), the sliding groove (4231) is a through groove, the width of the sliding groove (4231) is matched with the bolt diameter of the bolt (4241), the bolt (4241) penetrates through the sliding groove (4231) to be in threaded connection with the scraper main body (421), one end, penetrating through the scraper main body (421), of the bolt (4241) is in threaded connection with a nut (427), and the nut (427) abuts against the scraper main body (421); a space allowance is reserved between one bolt (4241) of each group of bolts (4241) far away from the chain transmission assembly (41) and the groove wall of the sliding groove (4231) far away from the chain transmission assembly (41).
2. The air flotation treatment equipment for papermaking wastewater as claimed in claim 1, wherein: the blocking piece (6) is a blocking rod (61), the blocking rod (61) is positioned in the sludge area (14), and the length direction of the blocking rod (61) faces the length direction of the scraper blade main body (421); one side part of the slag scraping plate (422) far away from the chain transmission assembly (41) is partially exposed between the two connecting rods (423), and the stop lever (61) blocks the movement of the part of the slag scraping plate (422) exposed between the two connecting rods (423) in the sludge area (14).
3. The papermaking sewage air flotation treatment equipment as claimed in claim 2, wherein: the slag scraping plate (422) and the stop lever (61) are both made of ferromagnetic materials, and the cross section of the stop lever (61) is polygonal.
4. The air flotation treatment equipment for the papermaking wastewater as claimed in claim 1, wherein: the guide plate (5) is hinged with the partition plate (131), a plurality of rib plates (52) are fixedly arranged on the lower surface of the guide plate (5), and the side edges of the rib plates (52) are abutted to the side wall, close to the separation area (13), of the partition plate (131).
5. The air flotation treatment equipment for the papermaking wastewater as claimed in claim 4, wherein: one side of the guide plate (5) far away from the partition plate (131) extends into the liquid level of the separation area (13), and one side of the guide plate (5) far away from the partition plate (131) is provided with a plurality of through holes (51).
6. The air flotation treatment equipment for the papermaking wastewater as claimed in claim 1, wherein: a stepped groove (4232) is formed in one side, close to the scraper main body (421), of the sliding groove (4231), a spring (428) is arranged in the stepped groove (4232), the length direction of the spring (428) faces to the axial direction of the connecting rod (423), and the spring (428) is far away from the chain transmission assembly (41) relative to the two bolts (4241); when the connecting rod (423) slides in a direction approaching the chain transmission assembly (41), the spring (428) is compressed.
7. The air flotation treatment equipment for papermaking wastewater as claimed in claim 6, wherein: ladder groove (4232) are followed the length direction full length of groove (4231) of sliding sets up, bolt (4241) threaded connection has square nut (425), square nut (425) are located in ladder groove (4232), the length of side of square nut (425) is less than or equal to the width of ladder groove (4232).
8. The air flotation treatment equipment for the papermaking wastewater as claimed in claim 7, wherein: the square nut (425) and the scraper blade main body (421) are provided with a bolt (426) in a penetrating way.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110224413.8A CN112978840B (en) | 2021-03-01 | 2021-03-01 | Papermaking sewage air supporting treatment facility |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110224413.8A CN112978840B (en) | 2021-03-01 | 2021-03-01 | Papermaking sewage air supporting treatment facility |
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| CN112978840A CN112978840A (en) | 2021-06-18 |
| CN112978840B true CN112978840B (en) | 2022-07-15 |
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| CN115520928B (en) * | 2022-04-28 | 2023-09-26 | 无锡工源环境科技股份有限公司 | High-flux air floatation equipment for treating micro-polluted water |
| CN116282768A (en) * | 2023-05-10 | 2023-06-23 | 山东中侨启迪环保装备有限公司 | Impurity air-floatation separation device for water treatment and working method thereof |
| CN116675279B (en) * | 2023-07-28 | 2023-10-31 | 湖南和三环保科技有限公司 | Efficient sewage treatment device for sewage treatment and application method thereof |
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| CN207347211U (en) * | 2017-09-30 | 2018-05-11 | 北京海绵城市建设工程有限公司 | A kind of dissolved air flotation system scrapes mud groove device |
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