CN115611484B - Equipment and process for removing heavy metal in waste incineration power plant sewage treatment by neutralization and coagulation - Google Patents

Abstract

The invention relates to the field of sewage treatment, in particular to equipment and a process for removing heavy metal in sewage treatment of a waste incineration power plant by neutralization and coagulation, wherein the equipment comprises a frame structure, a holding and stagnation barrel is rotatably arranged on the frame structure, and a plurality of filter holes are formed in the circumferential outer wall of the holding and stagnation barrel; the plugging plate slides on the circumferential outer wall of the stagnation holding barrel, and a through hole matched with the filter hole is formed in the plugging plate; the stirring mechanism is arranged on the stagnation containing barrel, is connected with the plugging plate and comprises a stirring component and a centrifugal component; strike off the mechanism, set up the support body is structural, be used for right the inboard flocculus of filtration pore is got rid of, strike off the mechanism and include lifting unit and multiunit extending structure, lifting unit can drive extending structure is in hold the bucket that stagnates and go up and down, the last arc that is provided with of extending structure strikes off the piece, just extending structure is in with the setting hold the subassembly adaptation that gathers together in the bucket to improve separation efficiency.

Description

Equipment and process for removing heavy metal in waste incineration power plant sewage treatment by neutralization and coagulation

Technical Field

The invention relates to the field of sewage treatment, in particular to equipment and a process for removing heavy metal in sewage treatment of a waste incineration power plant by neutralization and coagulation.

Background

With the rapid development of the urbanization process, the land resources are increasingly in short supply, and the traditional landfill treatment method gradually shows the defects. The household garbage incineration power generation not only can effectively treat the household garbage, but also can utilize incineration heat energy, and becomes a new way for solving the problem of the household garbage in recent years.

However, the incineration of household garbage to generate electricity also faces the problem of treating leachate, as in the landfill treatment of sanitary garbage. The landfill leachate is black or yellow brown liquid and contains a large amount of organic matters and inorganic matters, including various refractory organic matters (such as aromatic compounds, humus and the like), inorganic salts (such as ammonia, carbonic acid, sulfuric acid and the like) and metal ions (such as chromium, lead, copper and the like).

In the treatment of metal ions, particularly copper ions, the copper ions are mostly treated by adopting an alkali solution, a heavy metal capture agent and anionic polyacrylamide, and in the treatment process, the copper ions react to generate alum flocs, and at the moment, the alum flocs and the wastewater are filtered.

However, in the filtration, alum floc is easy to block filter holes, so that the filtration speed is slow, and the treatment speed of copper ions is seriously influenced.

Disclosure of Invention

The invention aims to provide equipment and a process for removing heavy metal in waste incineration power plant sewage treatment by neutralization and coagulation, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

waste incineration power plant sewage treatment heavy metal neutralization coagulation removal equipment includes:

the device comprises a frame body structure, wherein a stagnation accommodating barrel is rotatably arranged on the frame body structure, and a plurality of filter holes are formed in the circumferential outer wall of the stagnation accommodating barrel;

the plugging plate slides on the circumferential outer wall of the stagnation holding barrel, a through hole matched with the filter hole is formed in the plugging plate, and the filter hole is communicated when the through hole is superposed with the filter hole;

the stirring mechanism is arranged on the stagnation accommodating barrel, is connected with the plugging plate, and comprises a stirring component and a centrifugal component, wherein the centrifugal component is used for driving the plugging plate to move downwards to plug the filter holes when the stirring component acts;

strike off the mechanism, set up the support body is structural, be used for right the inboard flocculus of filtration pore is got rid of, strike off the mechanism and include lifting unit and multiunit extending structure, lifting unit can drive extending structure is in hold the bucket that stagnates and go up and down, the last arc that is provided with of extending structure strikes off the piece, just extending structure and setting are in hold the subassembly adaptation that gathers together in the bucket that stagnates the extending structure drives when the arc strikes off the piece and rises, the arc strikes off the piece with hold the inner wall laminating of the bucket that stagnates, and extending structure drives when the arc strikes off the piece and descends, the arc strike off the piece with hold the inner wall separation that stagnates the bucket.

As a further scheme of the invention: the stirring assembly comprises a first driving device fixed at the bottom of the stagnation containing barrel, an output shaft of the first driving device penetrates through the stagnation containing barrel and is connected with a rotating shaft, a transverse rod is fixedly installed at the upper part of the rotating shaft, and stirring pieces extending into the stagnation containing barrel are fixed at two ends of the transverse rod;

the stirring piece comprises a plurality of stirring rods which are sleeved in a sliding mode, and the stirring rods which are located at the bottommost part are in sliding abutting connection with support rings arranged in the containing stagnation barrel.

As a still further scheme of the invention: the centrifugal assembly comprises two sliding grooves symmetrically formed in the transverse rod, sliding blocks are arranged in the sliding grooves in a sliding mode, balancing weights are fixedly arranged on the sliding blocks, supporting rods are rotatably arranged on the sliding blocks, one ends, far away from the sliding blocks, of the supporting rods are rotatably connected with a lifting sleeve sleeved on the rotating shaft in a sliding mode, and a follower fixedly connected with the plugging plate through connecting rods is rotatably arranged on the lifting sleeve;

the slider with be provided with the energy storage external member between the spout, the energy storage external member including fixing in the slider and with slider sliding connection's horizontal pole, the cover is equipped with a spring on the horizontal pole, the one end of a spring with the lateral wall of spout is connected, the other end with the slider is connected.

As a still further scheme of the invention: the lifting assembly comprises two driving wheels which are rotatably arranged on the frame body structure, a driving belt is sleeved between the two driving wheels, and one driving wheel is connected with a second driving device fixed on the frame body structure;

a rotating shaft of one of the driving wheels is also connected with a bevel gear set arranged on the frame body structure, and the bevel gear set is connected with the stagnation accommodating barrel through a belt;

the lifting assembly is characterized by further comprising two guide rods fixed on the frame body structure, connecting pieces connected with the telescopic structures are slidably mounted on the guide rods, and the connecting pieces are connected with the transmission belt through embedded structures.

As a still further scheme of the invention: the embedded structure comprises an embedded groove formed on the side part of the connecting piece and a pulley rotatably mounted on the transmission belt, and the pulley can slide in the embedded groove.

As a still further scheme of the invention: a fixed sleeve and a square block which is sleeved on the fixed sleeve in a sliding manner are fixedly arranged in the stagnation containing barrel, the square block is rotatably connected with the connecting piece through a vertical rod penetrating through the stagnation containing barrel, an embedded block is arranged on the inner wall of the square block, and the embedded block slides in a limiting groove on the fixed sleeve;

the telescopic structure comprises a fixed sleeve plate fixedly arranged on the square block and a telescopic rod arranged in the fixed sleeve plate in a sliding manner, one end of the telescopic rod, far away from the square block, is connected with the arc scraping piece, and an abutting wheel matched with the gathering component is rotatably arranged on the telescopic rod;

the telescopic structure further comprises an elastic sleeve connected with the fixed sleeve plate and the telescopic rod.

As a still further scheme of the invention: the elasticity external member includes fixed mounting and is in No. two horizontal poles in the fixed lagging, no. two horizontal poles are kept away from the one end of fixed lagging inner wall is inserted and is put in the through-hole in the telescopic link, it is equipped with No. two springs still to overlap on No. two horizontal poles, the one end of No. two springs with the interior wall connection of fixed lagging, the other end with the telescopic link is connected.

As a still further scheme of the invention: the fixed sleeve is also sleeved with a sliding ring, a bulge in sliding fit with the limiting groove is arranged in the sliding ring, and the sliding ring is matched with a stop piece arranged on the fixed sleeve;

the gathering assembly comprises a clamping piece fixed on the sliding ring, one end, far away from the sliding ring, of the clamping piece is provided with a guide inclined plane, and the middle of the inner side of the clamping piece is provided with a locking groove.

Waste incineration power plant sewage treatment heavy metal neutralization coagulation gets rid of technology, adopts the aforesaid waste incineration power plant sewage treatment heavy metal neutralization coagulation and gets rid of equipment, includes the following step:

the method comprises the following steps: collecting waste water, pouring the collected waste water into a pH adjusting tank, adding a proper amount of alkaline solution into the pH adjusting tank, stirring to ensure that the pH value in the waste water is between 7 and 7.5, pumping the waste water into an oil separation settling tank, removing large-particle oil droplets in the waste water, discharging oil through an oil collecting pipe, and simultaneously settling a little precipitate generated by reaction in the pH adjusting tank;

step two: starting the equipment, pouring the wastewater with large oil droplets removed into a holding tank, wherein at the moment, because a stirring mechanism is in a working state, a filter hole on the side wall of the holding tank is in a blocking state, simultaneously adding a heavy metal capture agent, flake caustic soda and lime into the holding tank, stirring by using the stirring mechanism, further adding polyacrylamide to enable copper ions in the wastewater to form alum floc, and then keeping the stirring mechanism to work continuously for 20-40min;

step three: closing the stirring mechanism, controlling the action of the scraping mechanism, driving the stagnation containing barrel to rotate by the scraping mechanism, upwards scraping alum flocs at the filter hole of the stagnation containing barrel by lifting the telescopic structure, improving the separation speed, and closing the scraping mechanism after the wastewater in the stagnation containing barrel is completely lost;

step four: collecting the waste water in the stagnation holding barrel and on the telescopic structure after removing the alum floc and the copper ions, cleaning the equipment, and then removing the heavy metal ions such as chromium ions, lead ions and the like in the waste water by using the equipment;

step five: and finishing the neutralization and coagulation removal of heavy metals in the sewage of the waste incineration power plant.

Compared with the prior art, the invention has the beneficial effects that: the invention has novel design, and can improve the mixing speed of the waste water, the heavy metal catching agent, the flake caustic soda and the lime through the arranged stirring mechanism, so that after the polyacrylamide is added, copper ions in the mixture can quickly form alum floc, thereby improving the removal speed of the copper ions in the waste water on one hand, and enabling the copper ions in the waste water to fully react on the other hand, thereby achieving more thorough removal effect, simultaneously realizing the step-by-step stirring and separation in a stagnation-containing barrel, reducing the structural complexity of equipment, saving the production cost and the operation and maintenance cost, and being more suitable for popularization and use;

strike off the mechanism through setting up, it is rotatory to make the appearance stagnate the bucket, and separation speed with higher speed, the reciprocal lift of extending structure simultaneously, can order about the arc and strike off the reciprocal lift of piece, thereby strike off stifled alum blossom in the filtration pore inboard to the centrifugal separation in-process, avoid alum blossom to block up the filtration pore, improve the speed of holding the bucket when centrifugal separation, and strike off the piece when descending at the arc, with holding the separation of a barrel inner wall that stagnates, avoid taking the lower part of the bucket that stagnates to holding the alum blossom that the filtration pore department blockked up again, cause the alum blossom to pile up in the bottom of holding the bucket that stagnates.

Drawings

FIG. 1 is a schematic structural view of an embodiment of a waste incineration power plant sewage treatment heavy metal neutralization coagulation removal device.

FIG. 2 is a schematic structural diagram of an embodiment of a waste incineration power plant sewage treatment heavy metal neutralization coagulation removal device after an annular receiving hopper and a drainage box body are removed.

FIG. 3 is a schematic structural diagram of an angle formed after an annular receiving hopper and a drainage box body are removed in the sewage treatment heavy metal neutralization coagulation removal equipment of a waste incineration power plant.

FIG. 4 is a schematic structural diagram of a lifting component in an embodiment of a waste incineration power plant sewage treatment heavy metal neutralization coagulation removal device.

FIG. 5 is an exploded view of the lifting unit in the embodiment of the heavy metal neutralization coagulation removing apparatus for waste incineration power plant sewage treatment.

FIG. 6 is a schematic view of the internal structure of a stagnation-accommodating barrel in an embodiment of a waste incineration power plant sewage treatment heavy metal neutralization and coagulation removal device.

FIG. 7 is a schematic structural view of a telescopic structure and a holding tank in an embodiment of a waste incineration power plant sewage treatment heavy metal neutralization coagulation removal device.

FIG. 8 is a schematic structural diagram of an upright rod, a stagnation accommodating barrel and a fixing sleeve in an embodiment of a waste incineration power plant sewage treatment heavy metal neutralization coagulation removal device.

FIG. 9 is a schematic structural view of a fixed sleeve, a square block and a sliding ring in an embodiment of a waste incineration power plant sewage treatment heavy metal neutralization and coagulation removal device.

FIG. 10 is a schematic structural view of a telescopic structure in an embodiment of a waste incineration power plant sewage treatment heavy metal neutralization coagulation removal device.

FIG. 11 is a schematic structural view of an abutment wheel and a clamping member in an embodiment of a heavy metal neutralization coagulation removal device for sewage treatment in a waste incineration power plant.

FIG. 12 is an exploded view of a plugging plate and a holding tank in an embodiment of a waste incineration power plant sewage treatment heavy metal neutralization coagulation removal device.

FIG. 13 is a schematic structural diagram of a centrifugal assembly in an embodiment of a waste incineration power plant sewage treatment heavy metal neutralization coagulation removal device.

Fig. 14 is an enlarged view of the structure at a in fig. 13.

In the figure: 1. a frame structure; 2. a stagnation-containing barrel; 201. an annular receiving hopper; 202. a drainage box body; 203. a limiting frame; 3. a first driving device; 4. a rotating shaft; 5. a transverse rod; 501. a chute; 502. a slider; 503. a balancing weight; 6. a first cross bar; 7. a first spring; 8. a support bar; 9. a lifting sleeve; 10. a follower; 11. a connecting rod; 12. a plugging plate; 13. a stirring member; 14. a support ring; 15. a second driving device; 16. a driving wheel; 17. a transmission belt; 18. a pulley; 19. a connecting member; 1901. a fitting groove; 20. a guide bar; 21. erecting a rod; 22. a square block; 2201. an engagement block; 23. fixing the sleeve; 2301. a limiting groove; 2302. a stopper; 24. fixing the sleeve plate; 25. a telescopic rod; 2501. a butting wheel; 26. an arc-shaped scraping piece; 27. a second cross bar; 28. a second spring; 29. a slip ring; 2901. a protrusion; 30. a clamping member; 3001. a locking groove; 3002. a guide slope; 31. a belt; 32. a bevel gear set.

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 embodiments 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.

In addition, an element of the present invention may be said to be "fixed" or "disposed" to another element, either directly on the other element or with intervening elements present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Referring to fig. 1 to 14, in an embodiment of the present invention, a heavy metal neutralization coagulation removal apparatus for waste incineration power plant sewage treatment includes: support body structure 1, shutoff board 12, rabbling mechanism and scraping mechanism.

The frame body structure 1 is rotatably provided with a stagnation accommodating barrel 2, the circumferential outer wall of the stagnation accommodating barrel 2 is provided with a plurality of filter holes, the outside of the stagnation accommodating barrel 2 is further wrapped with a drainage box body 202 fixedly connected with the frame body structure 1, the drainage box body 202 is in sliding fit with the circumferential outer wall of the stagnation accommodating barrel 2, and the upper part of the stagnation accommodating barrel 2 is further fixed with an annular bearing hopper 201;

the plugging plate 12 slides on the circumferential outer wall of the stagnation accommodating barrel 2, specifically, a limiting frame 203 is fixed on the circumferential outer wall of the stagnation accommodating barrel 2, the plugging plate 12 slides between the limiting frame 203 and the outer wall of the stagnation accommodating barrel 2, a conducting hole matched with the filtering hole is arranged on the plugging plate 12, and when the conducting hole is superposed with the filtering hole, the filtering hole is conducted;

the stirring mechanism is arranged on the stagnation containing barrel 2, is connected with the plugging plate 12 and comprises a stirring component and a centrifugal component, and the centrifugal component is used for driving the plugging plate 12 to move downwards to plug the filter holes when the stirring component acts;

the stirring assembly comprises a first driving device 3 fixed at the bottom of the stagnation containing barrel 2, an output shaft of the first driving device 3 penetrates through the stagnation containing barrel 2 and is connected with a rotating shaft 4, a transverse rod 5 is fixedly installed at the upper part of the rotating shaft 4, and stirring pieces 13 extending into the stagnation containing barrel 2 are fixed at two ends of the transverse rod 5;

the stirring piece 13 comprises a plurality of stirring rods which are sleeved in a sliding mode, and the stirring piece 13 positioned at the bottommost part is in sliding abutting joint with a supporting ring 14 arranged in the stagnation accommodating barrel 2.

When a drive arrangement 3 during operation, it is rotatory to drive rotation axis 4 of being connected with it, drive stirring piece 13 and be circular motion in holding bucket 2 that stagnates under the effect of horizontal pole 5, empty waste water to holding this moment in bucket 2 that stagnates, rotatory stirring piece 13 can stir waste water, simultaneously to holding behind the bucket 2 that stagnates adding heavy metal catching agent, flake alkali and lime, can make four intensive mixing through the stirring, and behind the polyacrylamide of adding again in holding bucket 2 that stagnates, through the reaction, make the copper ion in the waste water form the alum blossom, get rid of through the copper ion to in the waste water.

The mixing speed of the wastewater, the heavy metal capture agent, the flake caustic soda and the lime can be improved through stirring, so that after the polyacrylamide is added, copper ions in the mixture quickly form alum floc, on one hand, the removal speed of the copper ions in the wastewater is improved, on the other hand, the copper ions in the wastewater can fully react, and the removal effect is more thorough.

Referring to fig. 12, 13, and 14, the centrifugal assembly includes two sliding grooves 501 symmetrically disposed on the transverse rod 5, a sliding block 502 is slidably mounted in the sliding groove 501, a weight block 503 is fixedly mounted on the sliding block 502, a supporting rod 8 is rotatably mounted on the sliding block 502, one end of the supporting rod 8, which is far away from the sliding block 502, is rotatably connected to a lifting sleeve 9 slidably sleeved on the rotating shaft 4, and a follower 10 fixedly connected to the blocking plate 12 through a connecting rod 11 is rotatably mounted on the lifting sleeve 9;

the slider 502 with be provided with the energy storage external member between the spout 501, the energy storage external member is including fixing in the slider 502 and with slider 502 sliding connection's horizontal pole 6, the cover is equipped with spring 7 on the horizontal pole 6, spring 7's one end with the lateral wall of spout 501 is connected, the other end with the slider 502 is connected.

In the invention, a mixing and separating integrated device is adopted, the problem that the structure of the device is complex due to the use of a plurality of cylinders is avoided, in a specific using process, in an initial state, the first driving device 3 is in a stop state, before waste water is poured into the stagnation accommodating barrel 2, the via hole and the filter hole on the blocking plate 12 are in a superposed state, namely, if waste water exists in the stagnation accommodating barrel 2, the waste water can flow out, so that the first driving device 3 needs to work and keep a certain rotating speed before the waste water is poured into the stagnation accommodating barrel 2, in the state, the rotating shaft 4 is in a rotating state, the transverse rod 5 rotates along with the rotating shaft 4, the sliding block 502 and the counterweight block 503 which are arranged on the transverse rod 5 generate centrifugal force, under the action of the centrifugal force, slider 502 deviates from the rotation center motion of rotation axis 4 and compresses spring 7, slider 502 will pass through bracing piece 8 tractive lifting sleeve 9 downwards simultaneously, lifting sleeve 9 passes through follower 10, connecting rod 11 drives shutoff board 12 downstream, and make conducting hole and filtration pore dislocation, realize the shutoff to the filtration pore, under this state, when waste water emptys to holding in the bucket 2, waste water can not flow and hold in the bucket 2, make in holding in the bucket 2 to waste water, heavy metal trapping agent, caustic soda flakes, the stirring of lime and polyacrylamide is mixed and can be realized, when drive arrangement 3 stall simultaneously, under the effect of spring 7, slider 502 resets, shutoff board 12 rises this moment, the conducting hole is in the coincidence state with the filtration pore and makes the filtration pore switch-on, can filter the separation to waste water this moment.

In the stirring process, the stagnation-containing barrel 2 is in a static state, at this time, although the rotating shaft 4, the transverse rod 5, the slider 502, the support rod 8 and the lifting sleeve 9 are in a rotating state, the lifting sleeve 9 and the follower 10 are in a rotating connection state, so that the lifting sleeve 9 is in a rotating state, but the plugging plate 12 can still be driven to lift and lower, so as to achieve the conduction and plugging of the filter holes.

Through the setting, realized can step by step stir and separate in holding bucket 2 that stagnates, reduced the structure complexity of equipment, save manufacturing cost and fortune dimension cost, more be fit for using widely.

Please refer to fig. 3, 4, 5, and 6, wherein the scraping mechanism is disposed on the frame structure 1 and configured to remove floccules inside the filter holes, the scraping mechanism includes a lifting assembly and a plurality of sets of telescopic structures, the lifting assembly can drive the telescopic structures to lift in the stagnation accommodating barrel 2, the telescopic structures are provided with arc scraping members 26, and the telescopic structures are adapted to the gathering assembly disposed in the stagnation accommodating barrel 2, when the telescopic structures drive the arc scraping members 26 to ascend, the arc scraping members 26 are attached to the inner wall of the stagnation accommodating barrel 2, and when the telescopic structures drive the arc scraping members 26 to descend, the arc scraping members 26 are separated from the inner wall of the stagnation accommodating barrel 2;

the lifting assembly comprises two driving wheels 16 which are rotatably arranged on the frame body structure 1, a driving belt 17 is sleeved between the two driving wheels 16, and one driving wheel 16 is connected with a second driving device 15 fixed on the frame body structure 1;

a bevel gear set 32 arranged on the frame body structure 1 is further connected to a rotating shaft of one of the driving wheels 16, and the bevel gear set 32 is connected with the stagnation accommodating barrel 2 through a belt 31;

the lifting assembly further comprises two guide rods 20 fixed on the frame body structure 1, a connecting piece 19 connected with the telescopic structure is mounted on each guide rod 20 in a sliding mode, the connecting piece 19 is connected with the transmission belt 17 through a chimeric structure, the chimeric structure comprises a chimeric groove 1901 formed in the side portion of the connecting piece 19 and a pulley 18 rotatably mounted on the transmission belt 17, and the pulley 18 can slide in the chimeric groove 1901.

When the wastewater in the stagnation barrel 2 reacts with the heavy metal catching agent, the flake caustic soda, the lime and the polyacrylamide to form alum flocs, the first driving device 3 is controlled to stop working, the plugging plate 12 moves upwards at the moment, the filter holes are communicated when the conducting hole and the filter holes are in a superposed state, the wastewater can be filtered and separated, in the state, the second driving device 15 is controlled to work, on one hand, the stagnation barrel 2 is driven to do circular motion through the bevel gear set 32 and the belt 31, the stagnation barrel 2 rotates, the separation speed is accelerated, on the other hand, the output shaft of the second driving device 15 rotates to drive one of the driving wheels 16 to rotate, the driving belt 17 sleeved between the two driving wheels 16 moves, the pulley 18 is driven to move along with the driving belt 17, the pulley 18 slides in the embedded groove 1901 in the connecting piece 19, and the driving belt 17 is of a double-layer closed structure, so that in the continuous motion of the driving belt 17, the connecting piece 19 can be driven to reciprocate and lift and drive the telescopic structure to lift and drive the arc scraping piece 26 to lift, thereby scraping the reciprocating and separating of the filter holes in the centrifugal separation process to avoid the inner side of the reciprocating alum flocs from being blocked when the filter holes to avoid the reciprocating separation.

Note that, when the pulley 18 moves to the circumferential end of the belt 17, it slides in the fitting groove 1901.

Referring to fig. 6, 7, 9, 10 and 11, a fixed sleeve 23 and a square block 22 slidably sleeved on the fixed sleeve 23 are fixedly installed in the stagnation-accommodating barrel 2, the square block 22 is rotatably connected to the connecting member 19 through an upright rod 21 penetrating through the stagnation-accommodating barrel 2, an engagement block 2201 is arranged on an inner wall of the square block 22, and the engagement block 2201 slides in a limit groove 2301 on the fixed sleeve 23;

the telescopic structure comprises a fixed sleeve plate 24 fixedly mounted on the square block 22 and a telescopic rod 25 arranged in the fixed sleeve plate 24 in a sliding manner, one end, far away from the square block 22, of the telescopic rod 25 is connected with the arc-shaped scraping piece 26, and an abutting wheel 2501 matched with the gathering component is rotatably mounted on the telescopic rod 25;

the telescopic structure further comprises an elastic suite which is connected with the fixed sleeve plate 24 and the telescopic rod 25, the fixed sleeve plate 24 is fixedly connected with the support ring 14, the elastic suite comprises a second cross rod 27 which is fixedly installed in the fixed sleeve plate 24, one end, far away from the inner wall of the fixed sleeve plate 24, of the second cross rod 27 is inserted into a through hole in the telescopic rod 25, a second spring 28 is further sleeved on the second cross rod 27, one end of the second spring 28 is connected with the inner wall of the fixed sleeve plate 24, and the other end of the second spring is connected with the telescopic rod 25;

the fixed sleeve 23 is further sleeved with a sliding ring 29, a protrusion 2901 in sliding fit with the limiting groove 2301 is arranged in the sliding ring 29, and the sliding ring 29 is matched with a stop piece 2302 arranged on the fixed sleeve 23;

the gathering assembly comprises a clamping piece 30 fixed on the sliding ring 29, one end, far away from the sliding ring 29, of the clamping piece 30 is provided with a guide inclined plane 3002, and the middle of the inner side of the clamping piece 30 is provided with a locking groove 3001.

When the connecting piece 19 goes up and down in a reciprocating way, the square block 22 is driven to go up and down by the vertical rod 21, the embedded block 2201 on the square block 22 is in sliding fit with the limiting groove 2301 on the fixed sleeve 23, so that the square block 22 and the vertical rod 21 can rotate along with the accommodating barrel 2, and the end, far away from the square block 22, of the vertical rod 21 is rotatably connected with the connecting piece 19, so that the square block 22 can always go up and down along with the connecting piece 19 even if the square block 22 rotates.

The sliding ring 29 is also provided with an embedded block 2201, so that the position of the clamping piece 30 on the sliding ring 29 can keep corresponding to the abutting wheel 2501 on the telescopic rod 25, and meanwhile, under the action of the embedded block 2201 and the limiting groove 2301, the vertical position of the arc scraping piece 26 in the accommodating barrel 2 is kept consistent, and the arc scraping piece 26 is prevented from being dislocated with the filter hole.

When the square block 22 is at the lowest position, the second spring 28 is in a compressed state, so that the telescopic rod 25 is located at one end of the stroke end part far from the square block 22, at the same time, the arc-shaped scraping piece 26 is in a state of sliding fit with the inner wall of the accommodating barrel 2, so as to scrape off alum flocs blocked on the filter hole, so as to prevent the alum flocs from blocking the filter hole, meanwhile, in the process that the square block 22 rises, the abutting wheel 2501 abuts against the guide inclined plane 3002 on the clamping piece 30, at the same time, the clamping piece 30 and the sliding ring 29 rise along with the square block 22, after the arc-shaped scraping piece 26 rises to the upper end part of the accommodating barrel 2, the square block 22 drives the arc-shaped scraping piece 26 to continue to rise, in the process, the embedded block 2201 on the sliding ring 29 moves to the end part of the limiting groove 2301, and in the process that the square block 22 continues to rise, the abutting wheel 2501 enters the locking groove 3002, the telescopic rod 25 moves towards the square block 22, at this time, the arc scraping piece 26 is separated from the inner wall of the holding stagnation barrel 2, the rear block 22 moves downwards, at this time, the arc scraping piece 26 is kept separated from the inner wall of the holding stagnation barrel 2, when the square block 22 is about to move to the lowest position, the sliding ring 29 is abutted against the stop piece 2302 on the fixed sleeve 23, the abutting wheel 2501 is separated from the clamping piece 30, the arc scraping piece 26 is kept in a state of being in sliding fit with the inner wall of the holding stagnation barrel 2 again, namely, in the process that the arc scraping piece 26 moves upwards, the arc scraping piece is in sliding fit with the inner wall of the holding stagnation barrel 2, in the process that the arc scraping piece 26 descends, the arc scraping piece 26 is separated from the inner wall of the holding stagnation barrel 2, through the arrangement, alum blossom on the filtering hole on the inner wall of the holding stagnation barrel 2 can be scraped in the ascending process of the arc scraping piece 26, so as to improve the centrifugal separation effect, and when the arc scraping piece 26 descends, separated from the inner wall of the stagnation containing barrel 2, avoiding the alum blossom blocked at the filter hole from being brought to the lower part of the stagnation containing barrel 2 again to cause the alum blossom to be accumulated at the bottom of the stagnation containing barrel 2.

Further, the middle of the square block 22 is provided with an arc-shaped through groove, and the shape of the arc-shaped through groove is larger than that of the stop part 2302, so that the stop part 2302 cannot interfere with the stop part 2302 when the square block goes up and down.

It should be noted that, since the arc scraping element 26 rotates along with the containing stagnation barrel 2, when the arc scraping element 26 moves to the upper part of the containing stagnation barrel 2, the alum blossom may fall into the annular receiving hopper 201 under the action of centrifugal force.

As an embodiment of the invention, the invention also provides a process for removing heavy metals in sewage of a waste incineration power plant by using the equipment, which comprises the following steps:

the method comprises the following steps: collecting waste water, pouring the collected waste water into a pH adjusting tank, adding a proper amount of alkaline solution into the pH adjusting tank, stirring to ensure that the pH value in the waste water is between 7 and 7.5, pumping the waste water into an oil separation settling tank, removing large-particle oil droplets in the waste water, discharging oil through an oil collecting pipe, and simultaneously settling a little precipitate generated by reaction in the pH adjusting tank;

step two: starting the equipment, pouring the wastewater with large oil droplets removed into the stagnation holding barrel 2, at the moment, because the stirring mechanism is in a working state, enabling filter holes in the side wall of the stagnation holding barrel 2 to be in a blocking state, simultaneously adding a heavy metal catching agent, flake caustic soda and lime into the stagnation holding barrel 2, stirring by using the stirring mechanism, further adding polyacrylamide to enable copper ions in the wastewater to form alum flocs, and then keeping the stirring mechanism to continuously work for 20-40min;

step three: the stirring mechanism is closed, the action of the scraping mechanism is controlled, the scraping mechanism drives the stagnation containing barrel 2 to rotate so as to carry out centrifugal separation, meanwhile, the telescopic structure ascends and descends to scrape alum flocs at the filter hole of the stagnation containing barrel 2 upwards, the separation speed is improved, and the scraping mechanism is closed after the wastewater in the stagnation containing barrel 2 is completely lost;

step four: collecting the waste water with the alumen ustum and copper ions removed from the telescopic structure in the stagnation holding barrel 2, cleaning the equipment, and removing heavy metal ions such as chromium ions, lead ions and the like in the waste water by using the equipment;

step five: and finishing the neutralization and coagulation removal of heavy metals in the sewage of the waste incineration power plant.

In summary, when the first driving device 3 works, the first driving device drives the rotating shaft 4 connected with the first driving device to rotate, the stirring piece 13 is driven to do circular motion in the holding tank 2 under the action of the transverse rod 5, at the moment, the wastewater is poured into the holding tank 2, the rotating stirring piece 13 can stir the wastewater, meanwhile, after the heavy metal catching agent, the flake caustic soda and the lime are added into the holding tank 2, the heavy metal catching agent, the flake caustic soda and the lime are fully mixed through stirring, and after the polyacrylamide is added into the holding tank 2, copper ions in the wastewater form alum flocs through reaction, and the copper ions in the wastewater are removed.

The mixing speed of the wastewater, the heavy metal capture agent, the flake caustic soda and the lime can be improved through stirring, so that after the polyacrylamide is added, copper ions in the mixture quickly form alum floc, on one hand, the removal speed of the copper ions in the wastewater is improved, on the other hand, the copper ions in the wastewater can fully react, and the removal effect is more thorough.

In the invention, a mixing and separating integrated device is adopted, the problem that the structure of the device is complex due to the use of a plurality of cylinders is avoided, in a specific using process, in an initial state, the first driving device 3 is in a stop state, before waste water is poured into the stagnation accommodating barrel 2, the via hole and the filter hole on the blocking plate 12 are in a superposed state, namely, if waste water exists in the stagnation accommodating barrel 2, the waste water can flow out, so that the first driving device 3 needs to work and keep a certain rotating speed before the waste water is poured into the stagnation accommodating barrel 2, in the state, the rotating shaft 4 is in a rotating state, the transverse rod 5 rotates along with the rotating shaft 4, the sliding block 502 and the counterweight block 503 which are arranged on the transverse rod 5 generate centrifugal force, under the action of the centrifugal force, slider 502 deviates from the rotation center motion of rotation axis 4 and compresses spring 7, while slider 502 will be through bracing piece 8 tractive lifting sleeve 9 downwards, lifting sleeve 9 passes through follower 10, connecting rod 11 drives shutoff board 12 downstream, and make conducting hole and filtration pore dislocation, realize the shutoff to the filtration pore, under this state, when waste water is emptyd to the bucket 2 that stagnates that holds, waste water can not flow the bucket 2 that stagnates that holds, make to waste water in the bucket 2 that stagnates that holds, heavy metal catching agent, caustic soda flakes, the stirring of lime and polyacrylamide is mixed and can be realized, simultaneously when drive arrangement 3 stall, under the effect of spring 7, slider 502 resets, shutoff board 12 rises this moment, the conducting hole is in the coincidence state with the filtration pore and makes the filtration pore switch-on, can carry out the filtering separation to waste water this moment.

In the stirring process, the stagnation-containing barrel 2 is in a static state, at this time, although the rotating shaft 4, the transverse rod 5, the slider 502, the support rod 8 and the lifting sleeve 9 are in a rotating state, the lifting sleeve 9 and the follower 10 are in a rotating connection state, so that the lifting sleeve 9 is in a rotating state, but the plugging plate 12 can still be driven to lift and lower, so as to achieve the conduction and plugging of the filter holes.

Through the setting, realized can step by step stir and separate in holding bucket 2 that stagnates, reduced the structure complexity of equipment, save manufacturing cost and fortune dimension cost, more be fit for using widely.

When the wastewater in the stagnation barrel 2 reacts with the heavy metal catching agent, the flake caustic soda, the lime and the polyacrylamide to form alum flocs, the first driving device 3 is controlled to stop working, the plugging plate 12 moves upwards at the moment, the filter holes are communicated when the conducting hole and the filter holes are in a superposed state, the wastewater can be filtered and separated, in the state, the second driving device 15 is controlled to work, on one hand, the stagnation barrel 2 is driven to do circular motion through the bevel gear set 32 and the belt 31, the stagnation barrel 2 rotates, the separation speed is accelerated, on the other hand, the output shaft of the second driving device 15 rotates to drive one of the driving wheels 16 to rotate, the driving belt 17 sleeved between the two driving wheels 16 moves, the pulley 18 is driven to move along with the driving belt 17, the pulley 18 slides in the embedded groove 1901 in the connecting piece 19, and the driving belt 17 is of a double-layer closed structure, so that in the continuous motion of the driving belt 17, the connecting piece 19 can be driven to reciprocate and lift and drive the telescopic structure to lift and drive the arc scraping piece 26 to lift, thereby scraping the reciprocating and separating of the filter holes in the centrifugal separation process to avoid the inner side of the reciprocating alum flocs from being blocked when the filter holes to avoid the reciprocating separation.

When the connecting piece 19 goes up and down in a reciprocating way, the square block 22 is driven to go up and down by the vertical rod 21, the embedded block 2201 on the square block 22 is in sliding fit with the limiting groove 2301 on the fixed sleeve 23, so that the square block 22 and the vertical rod 21 can rotate along with the accommodating barrel 2, and the end, far away from the square block 22, of the vertical rod 21 is rotatably connected with the connecting piece 19, so that the square block 22 can always go up and down along with the connecting piece 19 even if the square block 22 rotates.

The sliding ring 29 is also provided with an embedded block 2201, so that the position of the clamping piece 30 on the sliding ring 29 can keep corresponding to the abutting wheel 2501 on the telescopic rod 25, and meanwhile, under the action of the embedded block 2201 and the limiting groove 2301, the vertical position of the arc scraping piece 26 in the accommodating barrel 2 is kept consistent, and the arc scraping piece 26 is prevented from being dislocated with the filter hole.

When the square block 22 is at the lowest position, the second spring 28 is in a compressed state, so that the telescopic rod 25 is located at one end of the stroke end part far from the square block 22, at the same time, the arc-shaped scraping piece 26 is in a state of sliding fit with the inner wall of the accommodating barrel 2, so as to scrape off alum flocs blocked on the filter hole, so as to prevent the alum flocs from blocking the filter hole, meanwhile, in the process that the square block 22 rises, the abutting wheel 2501 abuts against the guide inclined plane 3002 on the clamping piece 30, at the same time, the clamping piece 30 and the sliding ring 29 rise along with the square block 22, after the arc-shaped scraping piece 26 rises to the upper end part of the accommodating barrel 2, the square block 22 drives the arc-shaped scraping piece 26 to continue to rise, in the process, the embedded block 2201 on the sliding ring 29 moves to the end part of the limiting groove 2301, and in the process that the square block 22 continues to rise, the abutting wheel 2501 enters the locking groove 3002, the telescopic rod 25 moves towards the square block 22, at the moment, the arc scraping piece 26 is separated from the inner wall of the storage barrel 2, the rear-side block 22 moves downwards, at the moment, the arc scraping piece 26 is kept separated from the inner wall of the storage barrel 2, when the square block 22 is about to move to the lowest position, the sliding ring 29 is abutted against the stop piece 2302 on the fixed sleeve 23, the abutting wheel 2501 is separated from the clamping piece 30, the arc scraping piece 26 is kept in a state of sliding fit with the inner wall of the storage barrel 2 again, namely, in the process that the arc scraping piece 26 moves upwards, the arc scraping piece is in sliding fit with the inner wall of the storage barrel 2, in the descending process of the arc scraping piece 26, the arc scraping piece 26 is separated from the inner wall of the storage barrel 2, through the arrangement, flowers on the filtering holes on the inner wall of the storage barrel 2 can be scraped in the ascending process of the arc scraping piece 26, so that the centrifugal separation effect is improved, and when the arc scraping piece 26 descends, separated from the inner wall of the stagnation containing barrel 2, avoiding the alum blossom blocked at the filter hole from being brought to the lower part of the stagnation containing barrel 2 again to cause the alum blossom to be accumulated at the bottom of the stagnation containing barrel 2.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (3)

1. Waste incineration power plant sewage treatment heavy metal neutralization coagulation removal equipment, its characterized in that includes:

the device comprises a frame body structure (1), wherein a holding stagnation barrel (2) is rotatably mounted on the frame body structure (1), and a plurality of filtering holes are formed in the circumferential outer wall of the holding stagnation barrel (2);

the plugging plate (12) slides on the circumferential outer wall of the stagnation-containing barrel (2), a through hole matched with the filter hole is formed in the plugging plate (12), and the filter hole is communicated when the through hole is coincident with the filter hole;

the stirring mechanism is arranged on the stagnation containing barrel (2), is connected with the blocking plate (12) and comprises a stirring component and a centrifugal component, and the centrifugal component is used for driving the blocking plate (12) to move downwards to block the filter holes when the stirring component acts;

the scraping mechanism is arranged on the frame body structure (1) and used for removing floccules on the inner side of the filter holes, the scraping mechanism comprises a lifting assembly and a plurality of groups of telescopic structures, the lifting assembly can drive the telescopic structures to lift in the storage tank (2), the telescopic structures are provided with arc scraping pieces (26), the telescopic structures are matched with gathering assemblies arranged in the storage tank (2), when the telescopic structures drive the arc scraping pieces (26) to lift, the arc scraping pieces (26) are attached to the inner wall of the storage tank (2), and when the telescopic structures drive the arc scraping pieces (26) to descend, the arc scraping pieces (26) are separated from the inner wall of the storage tank (2);

the stirring assembly comprises a first driving device (3) fixed at the bottom of the stagnation containing barrel (2), an output shaft of the first driving device (3) penetrates through the stagnation containing barrel (2) and is connected with a rotating shaft (4), a transverse rod (5) is fixedly installed at the upper part of the rotating shaft (4), and stirring pieces (13) extending into the stagnation containing barrel (2) are fixed at two ends of the transverse rod (5);

the stirring piece (13) comprises a plurality of stirring rods which are sleeved in a sliding mode, and the stirring piece (13) positioned at the bottommost part is in sliding abutting joint with a supporting ring (14) arranged in the stagnation containing barrel (2);

the centrifugal assembly comprises two sliding grooves (501) symmetrically formed in the transverse rod (5), a sliding block (502) is arranged in each sliding groove (501) in a sliding mode, a balancing weight (503) is fixedly arranged on each sliding block (502), a supporting rod (8) is rotatably arranged on each sliding block (502), one end, far away from each sliding block (502), of each supporting rod (8) is rotatably connected with a lifting sleeve (9) sleeved on the rotating shaft (4) in a sliding mode, and a follower (10) fixedly connected with the plugging plate (12) through a connecting rod (11) is rotatably arranged on each lifting sleeve (9);

an energy storage suite is arranged between the sliding block (502) and the sliding groove (501), the energy storage suite comprises a first cross rod (6) which is fixed in the sliding block (502) and is in sliding connection with the sliding block (502), a first spring (7) is sleeved on the first cross rod (6), one end of the first spring (7) is connected with the side wall of the sliding groove (501), and the other end of the first spring (7) is connected with the sliding block (502);

the lifting assembly comprises two driving wheels (16) rotatably mounted on the frame body structure (1), a driving belt (17) is sleeved between the two driving wheels (16), and one of the driving wheels (16) is connected with a second driving device (15) fixed on the frame body structure (1);

a rotating shaft of one of the driving wheels (16) is also connected with a bevel gear set (32) arranged on the frame body structure (1), and the bevel gear set (32) is connected with the stagnation accommodating barrel (2) through a belt (31);

the lifting assembly further comprises two guide rods (20) fixed on the frame body structure (1), a connecting piece (19) connected with the telescopic structure is slidably mounted on each guide rod (20), and the connecting piece (19) is connected with the transmission belt (17) through an embedded structure;

the embedding structure comprises an embedding groove (1901) formed at the side part of the connecting piece (19) and a pulley (18) rotatably mounted on the transmission belt (17), and the pulley (18) can slide in the embedding groove (1901);

a fixed sleeve (23) and a square block (22) which is sleeved on the fixed sleeve (23) in a sliding manner are fixedly arranged in the stagnation containing barrel (2), the square block (22) is rotatably connected with the connecting piece (19) through an upright rod (21) penetrating through the stagnation containing barrel (2), an embedded block (2201) is arranged on the inner wall of the square block (22), and the embedded block (2201) slides in a limiting groove (2301) on the fixed sleeve (23);

the telescopic structure comprises a fixed sleeve plate (24) fixedly mounted on the square block (22) and a telescopic rod (25) arranged in the fixed sleeve plate (24) in a sliding mode, one end, far away from the square block (22), of the telescopic rod (25) is connected with the arc scraping piece (26), and an abutting wheel (2501) matched with the gathering component is rotatably mounted on the telescopic rod (25);

the telescopic structure also comprises an elastic sleeve member which is connected with the fixed sleeve plate (24) and the telescopic rod (25);

the fixed sleeve (23) is further sleeved with a sliding ring (29), a protrusion (2901) in sliding fit with the limiting groove (2301) is arranged in the sliding ring (29), and the sliding ring (29) is matched with a stop piece (2302) arranged on the fixed sleeve (23);

gather together the subassembly including fixing holder (30) on slip ring (29), holder (30) are kept away from the one end of slip ring (29) is provided with and leads inclined plane (3002), just holder (30) inboard middle part is provided with locking groove (3001).

2. The waste incineration power plant sewage treatment heavy metal neutralization and coagulation removal equipment according to claim 1, wherein the elastic sleeve comprises a second cross rod (27) fixedly installed in the fixed sleeve plate (24), one end of the second cross rod (27) far away from the inner wall of the fixed sleeve plate (24) is inserted into a through hole in the telescopic rod (25), a second spring (28) is further sleeved on the second cross rod (27), one end of the second spring (28) is connected with the inner wall of the fixed sleeve plate (24), and the other end of the second spring is connected with the telescopic rod (25).

3. The process for removing heavy metal neutralization coagulation in sewage treatment of a waste incineration power plant adopts the equipment for removing heavy metal neutralization coagulation in sewage treatment of a waste incineration power plant according to claim 1, and is characterized by comprising the following steps:

the method comprises the following steps: collecting waste water, pouring the collected waste water into a pH adjusting tank, adding a proper amount of alkaline solution into the pH adjusting tank, stirring to ensure that the pH value in the waste water is between 7 and 7.5, pumping the waste water into an oil separation settling tank, removing large-particle oil droplets in the waste water, discharging oil through an oil collecting pipe, and simultaneously settling a little precipitate generated by reaction in the pH adjusting tank;

step two: starting the device according to claim 1, pouring the wastewater from which the large oil droplets are removed into the stagnation holding barrel (2), wherein at this time, the stirring mechanism is in an operating state, so that the filtration pores on the side wall of the stagnation holding barrel (2) are in a blocking state, simultaneously adding the heavy metal capture agent, the flake caustic soda and the lime into the stagnation holding barrel (2), stirring by using the stirring mechanism, further adding the polyacrylamide to form alum flocs from copper ions in the wastewater, and then keeping the stirring mechanism to operate for 20-40min;

step three: the stirring mechanism is closed, the scraping mechanism is controlled to act, the scraping mechanism drives the stagnation containing barrel (2) to rotate, meanwhile, the telescopic structure is lifted to upwards scrape alum flocs at the filter hole of the stagnation containing barrel (2), the separation speed is improved, and the scraping mechanism is closed after the wastewater in the stagnation containing barrel (2) is completely lost;

step four: collecting the waste water with the alum floc and the copper ions removed in the telescopic structure in the stagnation holding barrel (2), cleaning the equipment, and then removing the chromium ions and the lead ions in the waste water by using the equipment;

step five: and finishing the neutralization and coagulation removal of heavy metals in the sewage of the waste incineration power plant.

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