CN115634491A

CN115634491A - Coal washing wastewater treatment device capable of regularly self-cleaning

Info

Publication number: CN115634491A
Application number: CN202211290816.3A
Authority: CN
Inventors: 石海州; 宋欢; 孔帅; 刘运昌
Original assignee: Wuxi Wardco Autocontrol Technology Co ltd
Current assignee: Wuxi Wardco Autocontrol Technology Co ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-01-24
Anticipated expiration: 2042-10-21
Also published as: CN115634491B

Abstract

The invention discloses a coal washing wastewater treatment device capable of regularly self-cleaning, which comprises a tank body, wherein the top of the tank body is communicated with a water inlet pipe, the bottom of the tank body is communicated with a water outlet pipe, two filter screens in a semicircular structure are rotatably arranged in the tank body, the two filter screens are matched to form a circular structure matched with the inner diameter of the tank body, the two filter screens synchronously rotate towards or away from each other by taking the diameter ends of the two filter screens as axes, and the maximum rotation angle of each filter screen is 90 degrees; the inside below that is located the filter screen of jar body still rotates installs the stock guide, and during initial condition, two filter screens are horizontal arrangement and form circular structure and be used for carrying out filtration treatment to coal waste water, and the stock guide then arranges along vertical direction for the filter screen. The coal wastewater treatment device provided by the invention can automatically clean at regular time, and the filtered wastewater is utilized during cleaning, so that the wastewater is recycled, energy is saved, and the environment is protected.

Description

Coal washing wastewater treatment device capable of regularly self-cleaning

Technical Field

The invention relates to the technical field of coal wastewater treatment, in particular to a coal washing wastewater treatment device capable of periodically self-cleaning.

Background

China is a big energy country, and a large amount of coal resources are reserved. After coal mining, in order to improve the combustion quality of the coal, processes such as washing and selecting the coal transported to the ground from the underground are generally needed, and a large amount of coal washing water, coal slime water, mine sewage and other coal mine wastewater can be generated in the coal washing and coal selecting processes. The coal mine wastewater has the characteristics of high content of suspended matters, difficult natural sedimentation and the like. If the coal mine wastewater is directly discharged, the coal mine wastewater can not only pollute water bodies and foul riverways, but also can hinder the growth of aquatic organisms. Therefore, before being discharged, the coal wastewater needs to be purified to reach the discharge standard.

At present, the most adoption is still the physical method to the processing of coal waste water, filter through step by step in with waste water not equidimension particulate matter select, and then make the water in the waste water obtain purifying, this just proposes strict requirement to the filter screen that plays the filtering action, the purifying effect of waste water is directly influenced to the quality of filter screen, however in the actual operation in-process, because the impurity in the coal waste water is more, the filter screen is very easily blockked up after using a period of time, consequently, in order to guarantee the purifying effect of waste water, need regularly clear up the filth of filter screen surface adhesion, when clearing up the filter screen among the prior art, usually the personnel take out the filter screen from clarification plant, then utilize outside washing equipment to erode the filter screen, this kind of mode can be with the filter screen clean up, but the manual work is unpicked and washed the filter screen more troublesome, and clarification plant also can be in the shut down state because of manual work unpicking and washing, this washing machining efficiency that can influence undoubtedly.

Disclosure of Invention

In order to solve the technical problems in the prior art, the invention provides a coal washing wastewater treatment device capable of periodically self-cleaning.

In order to achieve the purpose, the invention provides the following technical scheme: a coal washing wastewater treatment device capable of regularly self-cleaning comprises a tank body, wherein the top of the tank body is communicated with a water inlet pipe, the bottom of the tank body is communicated with a water outlet pipe, two filter screens in semicircular structures are rotatably arranged in the tank body, the two filter screens are matched to form a circular structure matched with the inner diameter of the tank body, the two filter screens synchronously face to or are away from each other by taking the diameter ends of the filter screens as axes, and the maximum rotation angle of each filter screen is 90 degrees; the interior of the tank body is positioned below the filter screens and is also rotatably provided with a material guide plate, when in an initial state, the two filter screens are horizontally arranged to form a circular structure for filtering coal wastewater, and the material guide plate is arranged along the vertical direction relative to the filter screens; the two filter screens are connected with an electric actuator arranged outside the tank body in a driving mode and rotate 90 degrees towards each other, meanwhile, the material guide plate rotates to a horizontal state from a vertical state and is communicated with a drain pipe on the outer wall of the tank body, the spraying mechanism close to the lower portion of the two filter screens downwards moves along the vertical direction along with the rotation of the filter screens to spray the material guide plate, and the cleaned sewage flows out of the tank body through the drain pipe guided by the material guide plate.

Preferably, the periphery of the tank body corresponds two filter screen positions that are in the horizontality and locates integrated into one piece and be connected with the ring tube, the bottom fixedly connected with center pin of every filter screen diameter end, every center pin all extends to in the ring tube along the diameter end length direction of filter screen, one of them center pin both ends rotate respectively and install on the inner wall of ring tube, the output drive that passes through connecting axle and electric actuator behind the ring tube towards electric actuator's one end of another center pin orientation, two center pins have fixed the first gear and the second gear that two mesh each other to have cup jointed after extending to the ring tube inside towards one side of electric actuator.

Preferably, the end face of the guide plate, which faces one side of the filter screen, is of an inclined structure, a guide groove is formed by inward concave of the end face, one side of the guide groove is gradually wide and extends to the edge of the guide plate, the other side of the guide groove is gradually narrow and is communicated with a guide outlet at the edge of the guide plate, the guide plate is rotatably arranged in the tank body through rotating shafts on the outer walls of the two sides of the guide plate, and when the guide plate rotates to a horizontal state, the guide outlet is close to the pipe opening of the drain pipe; one side of the guide plate facing the filter screen is gradually increased from the diversion outlet to the widest end of the diversion groove to form an inclined structure, and one side of the guide plate departing from the filter screen is of a plane structure.

Preferably, a second chain wheel is fixedly sleeved on a central shaft which is connected with the connecting shaft inside the annular pipe, a rotating shaft of the material guide plate, which faces one side of the electric actuator, penetrates through the tank body and then is fixedly sleeved with a first chain wheel, and the first chain wheel is in transmission connection with the second chain wheel through a first chain.

Preferably, the spraying mechanism comprises a spraying pipe which is arranged in the tank body and can lift along the vertical direction, two rows of spray heads are distributed on the pipe wall of the spraying pipe along the length of the spraying pipe, the two rows of spray heads respectively face two filter screens, the middle parts of the spray heads are communicated with a third pipeline, and the third pipeline extends out of the tank body and then is communicated with a water tank arranged outside the tank body through a second pipeline.

Preferably, grooves are formed in two sides of the interior of the tank body corresponding to the lifting tracks of the spray pipes, wherein the grooves facing the direction of the electric actuator are communicated with an installation frame integrally formed on the outer wall of the tank body, a fourth chain wheel is installed at the top of the inner side of the installation frame, a sixth chain wheel is installed at the bottom of the inner side of the installation frame, a fourth chain is sleeved between the sixth chain wheel and the fourth chain wheel, a chain wheel shaft of the fourth chain penetrates through the installation frame and extends to the exterior of the installation frame, a third chain wheel externally meshed with the second gear is further rotatably installed on the outer wall of the installation frame, a seventh chain wheel is integrally formed in the center of the third chain wheel, and a second chain is sleeved between the seventh chain wheel and the third chain wheel; the both ends of shower nozzle respectively fixedly connected with jar internal wall sliding connection's of body spacing slide, have arranged the rack along vertical direction in two recesses of the internal portion of jar, the both ends of shower nozzle still rotate and install respectively with rack engaged with fourth gear, the center pin that is close to the fourth gear of installing frame one side extends to the installing frame inside after cup jointed with fourth chain mesh driven fifth sprocket.

Preferably, the inboard middle part integrated into one piece of shower is formed with the baffle, the both sides of baffle are all rotated and are installed the threaded rod, the threaded rod passes the shower back along its pole length direction respectively and is fixed continuous with corresponding fourth gear, the slide damper that the symmetry set up has been cup jointed to the screw thread on every threaded rod, and the screw thread opposite direction of two threaded rods, the shower is along jar internal wall lapse in-process, order about two slide damper rotations through fourth gear and rack cooperation, and then make two slide damper synchronous opposite movements.

Preferably, the spraying mechanism is still including the horizontal pole of two filter screen junctions of next-door neighbour, and on the both ends of horizontal pole were fixed in the inner wall of the jar body, the both ends bottom fixedly connected with connecting plate of horizontal pole was connected with the jib between two connecting plates, and it has a plurality of rings to slide to cup joint on the jib, and the third pipeline passes in proper order and extends to behind all rings and the shower intercommunication to two bifurcated pipes that the third pipeline end was divided distribute in the baffle both sides respectively.

Preferably, a three-way electromagnetic valve is connected to the water outlet pipe at the bottom of the tank body, the middle of the three-way electromagnetic valve is connected with the water tank through a first pipeline, a water level sensor is arranged inside the water tank, and the water level sensor is electrically connected with the three-way electromagnetic valve.

Compared with the prior art, the invention provides a coal washing wastewater treatment device capable of periodically self-cleaning, which has the following beneficial effects:

(1) According to the coal washing wastewater treatment device capable of regularly self-cleaning, when dirt on the filter screens needs to be cleaned, the electric actuator drives the two filter screens to rotate from the horizontal state to the vertical state, in the process, the guide plate and the filter screens generate a linkage effect and rotate from the vertical state to the horizontal state and are communicated with the sewage discharge pipe on the outer wall of the tank body, the spraying mechanism utilizes the purified wastewater to spray and clean the filter screens, the dirt can be separated from the filter screens, the mixture of the wastewater and the dirt is discharged from the sewage discharge pipe under the action of the guide plate, the self-cleaning of the filter screens is realized, the whole device can completely realize mechanical automatic cleaning, the device can be switched between the cleaning mode and the wastewater purification mode quickly and conveniently, the shutdown is not needed, and the purification treatment efficiency of the coal wastewater can be guaranteed. And the particulate matter that is cleared up on the filter screen is not discharged through the outlet pipe of jar body, but discharges from the blow off pipe, and coal waste water and particulate matter separately discharge, thoroughly do not have the particulate matter in the coal waste water that can ensure to discharge.

(2) In addition, the mechanism that sprays in this application goes up and down along with the rotation of filter screen and going up and down in vertical direction to the spray range of shower also changes along with the rotation of filter screen, and messenger shower upper nozzle spun liquid directly spouts to the filter screen all the time, can satisfy and spray abluent demand, can reduce the waste of resource again.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:

FIG. 1 is a schematic diagram showing an overall structure of a coal washing wastewater treatment apparatus capable of periodically self-cleaning according to an embodiment;

FIG. 2 is a schematic view of the entire apparatus in another angle in the example;

FIG. 3 is a schematic view of the internal structure of the can body according to the embodiment of the present invention;

fig. 4 is a schematic structural view of a material guide plate according to an embodiment;

FIG. 5 is a schematic view showing the installation of two filter screens in the tank in the embodiment;

FIG. 6 is a schematic structural view of the outer side of the mounting frame on the tank body in the embodiment;

FIG. 7 is a schematic structural view of the inner side of the mounting frame on the tank body in the embodiment;

FIG. 8 is an enlarged view of a portion of the structure of FIG. 7 at A;

FIG. 9 is a schematic view of the installation of the shower pipe inside the tank body in the embodiment;

FIG. 10 is a schematic view of the overall structure of the shower pipe according to the embodiment;

FIG. 11 is a schematic view of the internal structure of the shower pipe in the embodiment;

FIG. 12 is a schematic view of the assembly of two screens and a cross bar in the example;

FIG. 13 is a schematic view showing the connection of a third pipe to a cross bar in the embodiment;

fig. 14 is a schematic view showing the distribution of the hoisting ring on the suspension rod in the embodiment.

In the figure: 1. a tank body; 2. an annular tube; 3. a water inlet pipe; 4. a connecting flange; 5. a water tank; 6. a first pipe; 7. a second conduit; 8. a blow-off pipe; 9. an electric actuator; 10. a shield; 11. a first chain; 12. installing a frame; 13. filtering with a screen; 14. a material guide plate; 15. a rotating shaft; 16. a first sprocket; 17. a diversion trench; 18. a diversion outlet; 19. a protrusion; 20. a central shaft; 21. a connecting shaft; 22. a first gear; 23. a second gear; 24. a second sprocket; 25. a third gear; 26. a second chain; 27. a third sprocket; 28. a fourth sprocket; 29. a fourth chain; 30. a fifth sprocket; 31. a fourth gear; 32. a shower pipe; 33. a rack; 34. a sixth sprocket; 35. a spray head; 36. a third pipeline; 37. a limiting sliding plate; 38. a partition plate; 39. a threaded rod; 40. a sliding baffle; 41. a cross bar; 42. a boom; 43. a connecting plate; 44. a hoisting ring; 45. three-way electromagnetic valve.

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. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

Coal washing water, coal slime water, mine sewage and other coal mine wastewater can be generated in a large amount in the coal washing, coal dressing and coal digging processes. The coal mine wastewater has the characteristics of high content of suspended matters, difficult natural sedimentation and the like. If the coal mine wastewater is directly discharged, the coal mine wastewater not only pollutes water bodies and clogs riverways, but also can hinder the growth of aquatic organisms, so the coal mine wastewater becomes one of main pollution sources and coal loss sources of the coal industry, and therefore, the coal mine wastewater needs to be strictly treated by adopting effective means.

Referring to fig. 1 to 14, the present embodiment provides a coal washing wastewater treatment device capable of periodically self-cleaning, which includes a tank body 1, wherein a water inlet pipe 3 is communicated with the top of the tank body 1, a water outlet pipe is communicated with the bottom of the tank body 1, and a connecting flange 4 is connected to the bottom of the water outlet pipe.

When carrying out filtration treatment to coal waste water, the inside rotation of jar body 1 installs two semicircular structure's filter screen 13, because the application scene of this application is coal washing waste water, and the carbon particle needs most to carry out the filtering in the waste water, therefore filter screen 13's aperture sets up to 1.5mm. The two filter screens 13 are matched to form a circular structure matched with the inner diameter of the tank body 1, the two filter screens 13 synchronously rotate towards or away from each other by taking the diameter ends of the two filter screens 13 as axes, and the maximum rotation angle of each filter screen 13 is 90 degrees; the inside of jar body 1 is located the below of filter screen 13 and still rotates and installs stock guide 14, during initial condition, two filter screens 13 are horizontal arrangement and form circular structure and be used for carrying out filtration treatment to coal waste water, and stock guide 14 then arranges along vertical direction for filter screen 13, coal waste water passes through two filter screens 13 after entering jar body 1 is inside, the granule that the particle diameter is less than 1.5mm in the coal waste water passes through filter screen 13 along with water, and the granule that the particle diameter is greater than 1.5mm is then blockked on filter screen 13, and stock guide 14 is owing to keep vertical state and be located the intermediate position of two filter screens 13, therefore it can not cause great influence to the waste water flow after filtering.

When the filter screens 13 are adhered to a large number of particles, the filter screens 13 need to be cleaned, when the filter screens 13 are cleaned, the two filter screens 13 are in driving connection with an electric actuator 9 arranged outside the tank body 1, the electric actuator 9 drives the two filter screens 13 to rotate 90 degrees towards each other, finally, the two filter screens 13 are in a vertical state, meanwhile, the material guide plate 14 rotates from the vertical state to a horizontal state and is communicated with the sewage discharge pipe 8 on the outer wall of the tank body 1, the spraying mechanism next to the lower parts of the two filter screens 13 moves downwards along the vertical direction along with the rotation of the filter screens 13 to spray the filter screens, the cleaned sewage flows out of the tank body 1 through the material guide plate 14 and the sewage discharge pipe 8, the cleaned particles on the filter screens 13 are discharged from the sewage discharge pipe 8 instead of the tank body 1, the coal wastewater and the particles are discharged separately, and the coal wastewater and the particles can be ensured to be completely free of particles.

The periphery of the tank body 1 is integrally connected with the annular tube 2 corresponding to the positions of the two horizontal filter screens 13, the bottom of the diameter end of each filter screen 13 is fixedly connected with a central shaft 20, each central shaft 20 extends into the annular tube 2 along the length direction of the diameter end of each filter screen 13, two ends of one central shaft 20 are respectively rotatably mounted on the inner wall of the annular tube 2, one end of the other central shaft 20, facing the electric actuator 9, penetrates through the annular tube 2 and then is connected with the output end of the electric actuator 9 through a connecting shaft 21 in a driving manner, two sides of the central shafts 20, facing the electric actuator 9, extend into the annular tube 2 and then are fixedly sleeved with two first gears 22 and two second gears 23 which are meshed with each other, when the two filter screens 13 rotate relative to each other, the central shaft 20 connected with the connecting shaft 21 is driven by the electric actuator 9 to rotate, so as to drive the corresponding filter screens 13 and the first gears 22 to rotate, and the second gears 23 are in meshed with the first gears 22 for transmission, so as to drive the second gears 23 and the corresponding central shafts 20 to rotate relative to further realize the relative rotation of the two filter screens 13.

In a preferred embodiment, the guide plate 14 in the present application has an inclined structure at an end surface facing one side of the screen 13, the end surface is recessed inwards to form a guide groove 17, a region of the end surface extending upwards relative to the guide groove 17 forms a protrusion 19, one side of the guide groove 17 is gradually widened and extends to an edge of the guide plate 14, the other side of the guide groove 17 is gradually narrowed and is communicated with a guide outlet 18 at the edge of the guide plate 14, the guide plate 14 is rotatably mounted inside the tank 1 through a rotating shaft 15 on outer walls at two sides of the guide plate 14, and when the guide plate 14 rotates to a horizontal state, the guide outlet 18 is closely adjacent to a nozzle of the sewage discharge pipe 8, the spraying mechanism is operative to clean the particles attached to the screen 13, and the particles flow onto the guide plate 14 along with the water flow, then flow downwards under the action of the guide groove 17 and are finally discharged from the sewage discharge pipe 8. In order to thoroughly discharge the particulate matters on the material guide plate 14 to the outside of the tank body 1, the structure of the material guide plate 14 is further improved in the application, the height of the widest end of the material guide plate 14 facing the filter screen 13 is gradually increased from the flow guide outlet 18 to the flow guide groove 17 to form an inclined structure, the side of the material guide plate 14 facing away from the filter screen 13 is a plane structure, and after the mixture of the water flow and the particulate matters falls into the upper end surface of the material guide plate 14 which is in the inclined structure, the mixture of the water flow and the particulate matters can be quickly and thoroughly discharged to the outside of the tank body 1 under the action of gravity.

A second chain wheel 24 is fixedly sleeved on a central shaft 20 connected with a connecting shaft 21 in the annular pipe 2, a rotating shaft 15 of the material guide plate 14 facing one side of the electric actuator 9 penetrates through the tank body 1 and then is fixedly sleeved with a first chain wheel 16, the first chain wheel 16 is in transmission connection with the second chain wheel 24 through a first chain 11, when the electric actuator 9 drives the first gear 22 to rotate anticlockwise, the second chain wheel 24 and the first gear 22 rotate synchronously, the first chain wheel 16 is further driven to rotate through the first chain 11, and the material guide plate 14 located in the tank body 1 rotates anticlockwise.

Spray mechanism in this application then has including setting up in jar body 1 inside and can follow the shower 32 that vertical direction goes up and down, it has two rows of shower nozzles 35 to distribute along its length on the pipe wall of shower 32, two rows of shower nozzles 35 are respectively towards two filter screens 13, the middle part intercommunication of shower nozzle 35 is provided with third pipeline 36, third pipeline 36 extends to jar body 1 outside back through second pipeline 7 with set up in jar 5 intercommunications of body 1 outside water tank, during this spray mechanism operation, inside water pump through 5 inside water tanks pumps liquid to shower 32, and clear up filter screen 13 after the shower nozzle 35 blowout of two rows on the shower 32, utilize the impact force of rivers to carry out the reverse washing to filter screen 13, can clear up the particulate matter that is attached to filter screen 13 surface.

Because the mechanism that sprays in this application goes up and down along with the rotation of two filter screens 13, motion between them belongs to the linkage state, in order to realize above-mentioned effect, this application corresponds the lift orbit of shower 32 in the inside both sides of jar body 1 and is formed with the recess, wherein the recess and the integrated into one piece of the direction of electric actuator 9 set up in the installing frame 12 intercommunication of jar body 1 outer wall, fourth sprocket 28 is installed at the inboard top of installing frame 12, sixth sprocket 34 is installed to the bottom, cup joint fourth chain 29 between sixth sprocket 34 and the fourth sprocket 28, the sprocket shaft of fourth chain 29 passes installing frame 12 and extends to its outside back fixed the cup jointing and has third sprocket 27, still rotate on the outer wall of installing frame 12 and install the third gear 25 with second gear 23 external toothing, the center department integrated into one piece of third gear 25 is connected with the seventh sprocket, cup joint second chain 26 between seventh sprocket and the third sprocket 27. When the two filter screens 13 rotate from the horizontal state to the vertical state, the electric actuator 9 drives the first gear 22 to rotate counterclockwise, the second gear 23 rotates clockwise, the third gear 25 engaged with the second gear 23 rotates counterclockwise, the seventh sprocket and the third gear 25 rotate synchronously, the second chain 26 drives the third sprocket 27 to rotate counterclockwise, and the sixth sprocket 34 rotating synchronously with the third sprocket 27 drives the fourth sprocket 28 to rotate counterclockwise through the fourth chain 29. In order to avoid the exposure of each transmission element outside the installation frame 12, the present application further provides a shield 10 integrally connected with the annular pipe 2 outside the installation frame 12, and the shield 10 can enable each transmission element on the installation frame 12 to be located in a closed space.

The two ends of the spray head 35 are fixedly connected with limit sliding plates 37 which are slidably connected with the inner wall of the tank body 1, racks 33 are arranged in two grooves in the tank body 1 along the vertical direction, the two ends of the spray head 35 are also rotatably provided with fourth gears 31 which are respectively meshed with the racks 33, the central shaft of the fourth gear 31 close to one side of the mounting frame 12 extends into the mounting frame 12 and then is sleeved with a fifth chain wheel 30 which is meshed with the fourth chain 29 for transmission, the fourth chain wheel 28 and the fourth chain wheel 34 rotate anticlockwise, referring to the attached drawing 8, as the angle of the inner view of the tank body 1 is shown in the attached drawing, the fourth chain 29 rotates clockwise, the fourth chain 29 drives the fifth chain wheel 30 to rotate anticlockwise when rotating, as the limit sliding plates 37 at the two ends of the spray pipe 32 are connected with the inner wall of the tank body 1 in a sliding fit manner, and the fifth chain wheel 30 and the fourth gear 31 can rotate relative to the spray pipe 32, when the fourth chain wheel 31 rotates, the fourth chain wheel 31 is meshed with the grooves 33 on the tank body 1, so that the spray pipe 32 moves downwards, and the fifth chain wheel 30 and the fourth chain wheel 30 moves downwards at the same speed as the fourth chain wheel 29, but the fourth chain wheel 30 moves downwards. In addition, since the shower 32 and the filter 13 are in synchronous motion, the present application has a certain requirement for the angle of the spray head 35 on the shower 32, and the spray heads 35 on both sides of the shower 32 all face the filter 13 in an inclined state, which is not shown in the drawings, but in order to enable the spray head 35 to form a good spray washing effect on the filter 13 when the filter 13 rotates, all the spray heads 35 must be inclined.

Further, in order to reduce the waste of water resources, because the spray pipe 32 is in a downward movement process, the filter screen 13 is in a rotation state, and the filter screen 13 is in a semicircular structure, if all the spray heads 35 on the spray pipe 32 are always in a spraying operation state, then the liquid sprayed from the spray heads 35 at two ends of the spray pipe 32 cannot be sprayed onto the filter screen 13, so that the waste of the liquid can be caused, in order to avoid the above situation, the present application structurally improves the spray pipe 32, in the present application, the partition plate 38 is integrally formed in the middle of the inner side of the spray pipe 32, the threaded rods 39 are rotatably installed on two sides of the partition plate 38, the threaded rods 39 respectively penetrate through the spray pipe 32 along the rod length direction and then are fixedly connected with the corresponding fourth gear 31, the sliding baffles 40 symmetrically arranged are sleeved on the threaded rods 39, the thread directions of the two sliding baffles 39 are opposite, in the downward sliding process of the inner wall of the spray pipe 32 along the tank body 1, the two sliding baffles 40 are driven to rotate through the cooperation of the fourth gear 31 and the rack 33, so that the two sliding baffles 40 synchronously move towards the inner wall of the spray pipe 32, and the spray pipe 32, thereby reducing the waste of the spray pipe in the waste of the spray pipe, and the waste of the spray pipe can be gradually reduced, and the waste of the spray pipe can be reduced.

In addition, the spraying mechanism in this application still includes the horizontal pole 41 that is close to two filter screens 13 junctions, the both ends of horizontal pole 41 are fixed in on the inner wall of jar body 1, the both ends bottom fixedly connected with connecting plate 43 of horizontal pole 41, be connected with jib 42 between two connecting plate 43, a plurality of rings 44 have been cup jointed in the slip on jib 42, third pipeline 36 passes in proper order and extends to and communicates with shower 32 behind all rings 44, and two furcate tubes that third pipeline 36 end was divided distribute in baffle 38 both sides respectively, inside water of water tank 5 passes through second pipeline 7 and third pipeline 36 in proper order and gets into inside shower 32, and water gets into from the middle part of shower 32, flow to its both ends by the both sides of baffle 38 inside shower 32, when two slide damper 40 move in opposite directions, shower 35 on the shower 32 is gradually blocked, the range of spraying of shower 32 shortens from both ends to the middle part gradually. It should be further noted that, because the shower pipe 32 in the present application performs reciprocating lifting movement inside the tank body 1, a sufficient length is reserved inside the tank body 1 for the shower pipe 32 to move, so as to avoid pulling the shower pipe 32 when the shower pipe 32 moves up and down. Since the spraying mechanism is disposed at the joint of the two filter screens 13, even if the two filter screens 13 rotate to a maximum angle of 90 °, the spraying mechanism and the third duct 36 do not interfere with the filter screens 13.

As a preferred embodiment, the device in the application mainly aims at the coal wastewater, the coal wastewater is filtered by the filter screen 13 to reach the discharge standard, and after the filter screen 13 works for a period of time, the particulate matters attached to the surface of the filter screen 13 influence the filtering effect of the filter screen, so that the filter screen needs to be cleaned regularly, while the electric actuator 9 in the application can be arranged and started once every fixed time, so that the regular automatic cleaning of the whole device is realized. In the cleaning process, the spraying mechanism also needs to use clean water source to spray the filter screen 13, and the coal wastewater after processing through this application has reached emission standard, consequently, also can utilize it, collect this waste water again and utilize and be used for spraying the operation to filter screen 13, thereby can save resources, be favorable to energy-concerving and environment-protective, in order to reach this purpose, this application is connected with three-way solenoid valve 45 on the outlet pipe of jar body 1 bottom, the middle part of three-way solenoid valve 45 links to each other with water tank 5 through first pipeline 6, the inside of water tank 5 is provided with water level sensor, and this water level sensor is connected with three-way solenoid valve 45 electricity, when whole device is in operating condition, through the inside water level sensor of water tank 5 and three-way solenoid valve 45 cooperation, can realize the inside automatic water injection of water tank 5, when water level sensor monitors that the inside water level of water tank 5 is not enough, then three-way solenoid valve 45 action can block up the outlet pipe, coal wastewater after the filtration processing then gets into inside water tank 5 through first pipeline 6 entering water tank 5, after the inside water level sensor action water level reaches the target, water level sensor action water level sends the signal to three-way solenoid valve 45, the normal water tank 45 that the water tank operates, the filter screen is gone on the water tank after the water tank works, the water outlet pipe is carried out the processing, the normal input of the water supply once more, the water supply is finished, the water supply mechanism, after the water supply, the coal wastewater after the water supply is carried out, the water supply is carried out, the work of once more, the water supply that the water supply is finished.

In the description of the present invention, the terms "first", "second", "another", and "yet" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and alterations can be made to these embodiments without departing from the spirit and scope of the invention, which is defined by the claims and their equivalents.

Claims

1. The utility model provides a but coal washing effluent treatment plant of regular self-cleaning, includes a jar body (1), and the top intercommunication of jar body (1) is provided with inlet tube (3), and the bottom intercommunication is provided with outlet pipe, its characterized in that: two filter screens (13) in a semicircular structure are rotatably arranged in the tank body (1), the two filter screens (13) are matched to form a circular structure matched with the inner diameter of the tank body (1), the two filter screens (13) synchronously rotate towards or away from each other by taking the diameter ends of the two filter screens as axes, and the maximum rotation angle of each filter screen (13) is 90 degrees; a material guide plate (14) is rotatably arranged in the tank body (1) below the filter screens (13), when in an initial state, the two filter screens (13) are horizontally arranged to form a circular structure for filtering coal wastewater, and the material guide plate (14) is arranged in the vertical direction relative to the filter screens (13); the two filter screens (13) are in driving connection with an electric actuator (9) arranged outside the tank body (1) and rotate 90 degrees towards each other, meanwhile, the material guide plate (14) rotates to a horizontal state from a vertical state and is communicated with a drain pipe (8) on the outer wall of the tank body (1), the spraying mechanism close to the lower part of the two filter screens (13) moves downwards along the vertical direction along with the rotation of the filter screens (13) to spray the filter screens, and the cleaned sewage flows out of the tank body (1) through the material guide plate (14) and is guided into the drain pipe (8).

2. The apparatus for treating coal washing wastewater capable of being periodically self-cleaned according to claim 1, wherein: the periphery of the tank body (1) corresponds two filter screens (13) in a horizontal state and is integrally connected with the annular pipe (2), the bottom fixedly connected with center shaft (20) of the diameter end of each filter screen (13), each center shaft (20) extends into the annular pipe (2) along the length direction of the diameter end of each filter screen (13), two ends of one center shaft (20) are respectively rotatably installed on the inner wall of the annular pipe (2), one end of the other center shaft (20) facing the electric actuator (9) penetrates through the annular pipe (2) and then is connected with the output end of the electric actuator (9) through a connecting shaft (21), and the two center shafts (20) extend to one side of the electric actuator (9) and are fixedly sleeved with two first gears (22) and second gears (23) which are meshed with each other after the annular pipe (2) is internally.

3. The coal washing wastewater treatment device capable of being periodically self-cleaned according to claim 2, characterized in that: the end face of one side, facing the filter screen (13), of the material guide plate (14) is of an inclined structure, a guide groove (17) is formed in the end face in a downward concave mode, one side of the guide groove (17) is gradually wide and extends to the edge of the material guide plate (14), the other side of the guide groove is gradually narrowed and is communicated with a guide outlet (18) in the edge of the material guide plate (14), the material guide plate (14) is rotatably installed inside the tank body (1) through rotating shafts (15) on outer walls of two sides of the material guide plate, and when the material guide plate (14) rotates to be in a horizontal state, the guide outlet (18) is close to the pipe opening of the sewage discharge pipe (8); one side of the material guide plate (14) facing the filter screen (13) is gradually increased from the diversion outlet (18) to the widest end of the diversion groove (17) to form an inclined structure, and one side of the material guide plate (14) departing from the filter screen (13) is of a plane structure.

4. The coal washing wastewater treatment device capable of being periodically self-cleaned according to claim 3, characterized in that: a central shaft (20) connected with the connecting shaft (21) in the annular pipe (2) is fixedly sleeved with a second chain wheel (24), a rotating shaft (15) of the material guide plate (14) facing one side of the electric actuator (9) penetrates through the tank body (1) and then is fixedly sleeved with a first chain wheel (16), and the first chain wheel (16) is in transmission connection with the second chain wheel (24) through a first chain (11).

5. The coal washing wastewater treatment device capable of periodic self-cleaning according to any one of claims 2 to 4, characterized in that: the spraying mechanism comprises a spraying pipe (32) which is arranged inside the tank body (1) and can be lifted along the vertical direction, two rows of spray heads (35) are distributed on the pipe wall of the spraying pipe (32) along the length of the pipe wall, the two rows of spray heads (35) respectively face the two filter screens (13), a third pipeline (36) is communicated with the middle of each spray head (35), and the third pipeline (36) is communicated with a water tank (5) arranged outside the tank body (1) through a second pipeline (7) after extending to the outside of the tank body (1).

6. The apparatus for treating coal washing wastewater capable of being periodically self-cleaned according to claim 5, wherein: grooves are formed in two sides of the inner portion of the tank body (1) corresponding to lifting tracks of the spray pipes (32), wherein the grooves facing the direction of the electric actuator (9) are communicated with a mounting frame (12) which is integrally formed on the outer wall of the tank body (1), a fourth chain wheel (28) is mounted at the top of the inner side of the mounting frame (12), a sixth chain wheel (34) is mounted at the bottom of the mounting frame, a fourth chain (29) is sleeved between the sixth chain wheel (34) and the fourth chain wheel (28), a chain wheel shaft of the fourth chain (29) penetrates through the mounting frame (12) and extends to the outer portion of the mounting frame, then a third chain wheel (27) is fixedly sleeved on the inner side of the mounting frame (12), a third gear (25) which is externally meshed with the second gear (23) is further rotatably mounted on the outer wall of the mounting frame (12), a seventh chain wheel is integrally formed at the center of the third gear (25), and a second chain (26) is sleeved between the seventh chain wheel and the third chain wheel (27); both ends of shower nozzle (35) are fixedly connected with respectively and jar spacing slide (37) of the inner wall sliding connection of body (1), have arranged rack (33) along vertical direction in two inside recesses of the body (1), the both ends of shower nozzle (35) are still rotated and are installed fourth gear (31) engaged with respectively with rack (33), the center pin that is close to fourth gear (31) of installing frame (12) one side extends to installing frame (12) inside back cup joints with fourth chain (29) meshing driven fifth sprocket (30).

7. The apparatus for treating coal washing wastewater capable of being periodically self-cleaned according to claim 6, wherein: inboard middle part integrated into one piece of shower (32) is formed with baffle (38), threaded rod (39) are all rotated to the both sides of baffle (38) and are installed, threaded rod (39) are respectively along its pole length direction pass shower (32) back and corresponding fourth gear (31) fixed linking to each other, the slide damper (40) that the symmetry set up are cup jointed to the screw thread on every threaded rod (39), and the screw thread opposite direction of two threaded rod (39), shower (32) are along jar body (1) inner wall lapse in-process, order to order about two slide damper (40) rotatoryly through fourth gear (31) and rack (33) cooperation, and then make two slide damper (40) synchronous opposite movements.

8. The coal washing wastewater treatment device capable of being periodically self-cleaned according to claim 7, wherein: spraying mechanism is still including horizontal pole (41) of two filter screen (13) junctions of next-door neighbour, the both ends of horizontal pole (41) are fixed in on the inner wall of the jar body (1), both ends bottom fixedly connected with connecting plate (43) of horizontal pole (41), be connected with jib (42) between two connecting plates (43), sliding sleeve has a plurality of rings (44) on jib (42), third pipeline (36) pass in proper order extend to behind all rings (44) and communicate with shower (32), and two bifurcated pipes that third pipeline (36) end was divided distribute respectively in baffle (38) both sides.

9. The apparatus for treating coal washing wastewater capable of being periodically self-cleaned according to claim 5, wherein: the water outlet pipe at the bottom of the tank body (1) is connected with a three-way electromagnetic valve (45), the middle part of the three-way electromagnetic valve (45) is connected with a water tank (5) through a first pipeline (6), a water level sensor is arranged inside the water tank (5), and the water level sensor is electrically connected with the three-way electromagnetic valve (45).