Adjusting tank with sludge circulation function

Abstract

The utility model relates to the field of sewage treatment, in particular to an adjusting tank with a sludge circulation function, which comprises an adjusting tank, a fixing frame is arranged in the middle of the upper surface of an adjusting tank body, a limiting unit is arranged on the upper surface of the middle of the fixing frame, and a sludge stirring unit is arranged at the bottom of the limiting unit. A sludge circulating pipe is arranged on the lower surface of the fixed frame, a conventional sludge backflow pipe is changed from an anaerobic tank to a regulating tank and is changed into the sludge circulating pipe, and circulating sludge fed by the sludge circulating pipe can be effectively and fully mixed with sewage in the regulating tank in cooperation with a sludge stirring unit in the regulating tank; a granulation reaction is carried out under the fluidization effect of sludge and sewage, the sludge flocculation effect is improved, the co-digestion effect of the sludge is promoted, release of organic matter is improved, carbon source supplementation is carried out on the sewage, the sludge at the bottom is discharged into a sludge concentration tank, and therefore the residual sludge amount in the discharged sewage is reduced, the sludge amount is reduced, and the tail end treatment burden is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a regulating pool with a sludge circulation function. Background Art

[0002] Sewage refers to the water discharged from life and production that is polluted to a certain extent. Water that has lost its original function is simply called sewage. It is mainly water used in life, which contains more organic matter and is easier to treat. Sewage treatment is the process of purifying sewage to meet the water quality requirements for discharge into a certain water body or reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscape, medical care, catering, etc., and is increasingly entering the daily lives of ordinary people.

[0003] At present, conventional sewage treatment adopts denitrification treatment, among which the denitrification process consumes a large amount of carbon source, and there is often a shortage of carbon source. Generally, the method of adding carbon source is adopted. On the one hand, the external carbon source increases the operating cost, and on the other hand, it increases the amount of sludge, increasing the burden of terminal treatment. Moreover, a large amount of sludge will be generated in the sewage treatment process. Conventional treatment methods include composting, incineration, and landfill, all of which require the sludge to be concentrated, dehydrated, and transported, which increases carbon emissions. On the one hand, it increases transportation costs, and on the other hand, there is anaerobic fermentation in the transportation process, which causes odor and methane gas to escape. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a regulating tank with a sludge circulation function.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A regulating tank with a sludge circulation function comprises a regulating tank, wherein a fixing frame is arranged in the middle of the upper surface of the regulating tank body, a limiting unit is arranged on the upper surface of the middle part of the fixing frame, a sludge stirring unit is installed at the bottom of the limiting unit, a sludge circulation pipe is arranged on the lower surface of the fixing frame, and a sludge collecting barrel is arranged below the fixing frame, a sludge outlet of the sludge circulation pipe is aligned with the sludge collecting barrel below, a sludge scraping unit is arranged on one side of the regulating tank, and a shaft body portion of the sludge stirring unit passes through the sludge collecting barrel;

[0007] A lifting unit is provided on the upper surface of the regulating tank body at one side away from the scraping unit, a traction unit is provided at one side of the lifting unit, a locking unit is provided at one side of the lifting unit away from the traction unit, and a driving unit is provided at one side of the traction unit away from the lifting unit;

[0008] The traction unit is used for traction of the sludge scraping unit, the pulling unit is used for pulling of the sludge stirring unit, and the driving unit is used for driving the pulling unit and the traction unit.

[0009] In addition, a preferred structure is that a mud collecting portion recessed downward to a certain depth is provided on one side of the bottom of the regulating tank, sludge discharge pipes connected to the outside are symmetrically provided on the tank wall on one side of the mud collecting portion, a drainage pipe is provided above the bottom of the mud collecting portion, and a water inlet pipe is provided on the tank wall on the side of the regulating tank away from the mud collecting portion.

[0010] In addition, the preferred structure is that the sludge stirring unit includes a stirring motor, the upper part of the stirring motor is installed and connected with the limit unit, the bottom output end of the stirring motor is connected with a rotating shaft, the upper part of the rotating shaft body and located in the mud collecting barrel is provided with a first stirring part, the middle part of the rotating shaft body is located above the first stirring part and is provided with a second stirring part, and the bottom of the rotating shaft body is located below the second stirring part and is provided with a third stirring part;

[0011] The first stirring part comprises a plurality of stirring plates fixedly connected in two layers, the stirring plates are inclined at a certain angle, and the stirring plates are all located in the mud collecting barrel;

[0012] The second stirring part includes a plurality of curved stirring blades, and the stirring blades are evenly arranged in the middle of the shaft body;

[0013] The third stirring part includes a plurality of fixed plates, which are evenly arranged at the bottom end of the rotating shaft body. A hanging piece is arranged at the bottom of the fixed plate body. A gap is left between the bottom of the hanging piece and the bottom of the regulating tank, and reinforcing rods are fixedly connected between the fixed plate bodies.

[0014] In addition, the preferred structure is that the mud collecting barrel body is arranged at the bottom of the fixed frame body, a water inlet is opened through the mud collecting barrel body on the side facing the water inlet pipe, a second drain outlet is opened through the bottom surface of the mud collecting barrel body, and a plurality of first drain outlets are evenly opened through the mud collecting barrel body above the second drain outlet.

[0015] In addition, the preferred structure is that the limit unit includes a support frame, the support frame body is arranged at the middle of the upper surface of the fixed frame, the limit columns are symmetrically arranged on the support frame, the upper part of the support frame body is supported by a connecting head, and a stirring motor is connected and installed below the connecting head;

[0016] The upper disk of the connecting head is arranged on the upper surface of the support frame and can move up and down, and the connecting head is symmetrically provided with limiting holes consistent with the diameter of the limiting column, a fixing ring is arranged in the middle of the upper surface of the upper disk of the connecting head, the fixing ring is connected to the lifting unit, and support feet are symmetrically arranged on the bottom end surface of the upper disk of the connecting head.

[0017] In addition, a preferred structure is that the pulling unit includes a second winding frame, the second winding frame is arranged at one side of the regulating tank, a pulling rope is wound on the second winding frame, one end of the pulling rope away from the second winding frame is connected to the fixing ring, a plurality of second traction wheel frames are arranged between the fixing ring and the second winding frame, a traction wheel on the second traction wheel frame is provided with a pulling rope, and the second traction wheel frame is used for pulling the pulling rope;

[0018] The second winding frame includes a second winding disk, and second bearing seats are arranged on both sides of the second winding disk body. The second winding disk body is arranged to rotate on the second bearing seats on both sides. The second winding disk is driven to rotate by the driving unit, and a limiting plug hole is provided on the surface of the locking unit on one side of the second winding disk body;

[0019] In addition, a preferred structure is that the locking unit includes a hydraulic telescopic machine, and a locking plug is fixedly connected to the end of the telescopic rod of the hydraulic telescopic machine, and the locking plug can be inserted into the locking socket.

[0020] In addition, a preferred structure is that the scraper unit includes guide rails, which are symmetrically arranged on the upper surfaces of both sides of the regulating tank body, and a slidable scraper frame is arranged between the guide rails on both sides;

[0021] The scraper frame includes a scraper plate, which is arranged on the upper surface of the bottom of the regulating tank away from the bottom. Connecting rods are symmetrically arranged on the upper surface of the scraper plate body. A guide block is fixedly connected to the upper end of the connecting rod. The guide block is movably arranged on a guide rail. A push handle is arranged on the upper surface of the guide block on one side, and the front ends of the two guide blocks on one side away from the push handles are connected to the traction unit.

[0022] In addition, a preferred structure is that the traction unit includes a first winding frame, a traction rope is arranged on the first winding frame for winding, one end of the traction rope away from the first winding frame is fixedly connected to the guide block, a first traction wheel frame is arranged between the guide block and the first winding frame, a plurality of traction wheels are arranged on the first traction wheel frame, and the traction rope passes through the first traction wheel frame and is pulled by the traction wheel; the first winding frame includes a first winding disk, first bearing seats are arranged on both sides of the first winding disk, the first winding disk is arranged on the first bearing seats on both sides to rotate, and the first winding disk is driven by a driving unit on one side;

[0023] The driving unit includes a movable guide rail, on which a traversable rotating motor is arranged, and a driving shaft of the rotating motor can pass through the first winding reel and the second winding reel and be assembled therewith, so as to drive the first winding reel and the second winding reel.

[0024] The beneficial effects of the utility model are as follows: the conventional sludge return pipe is changed from the anaerobic tank to be connected to the regulating tank, and is changed into a sludge circulation pipe. In conjunction with the sludge stirring unit in the regulating tank, the circulating sludge sent into the sludge circulation pipe can be fully mixed with the sewage in the regulating tank, and the fluidization effect of the sludge and sewage is used to carry out granulation reaction, thereby improving the sludge flocculation effect and promoting the co-digestion of the sludge, increasing the release of organic matter to supplement the carbon source for the sewage, and the sludge settled at the bottom is discharged to the bottom of the sludge collecting tank through the sludge scraping unit, so as to be discharged to the sludge concentration tank, thereby reducing the amount of residual sludge in the discharged sewage, thereby reducing the amount of sludge and reducing the burden of terminal treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the regulating pool;

[0026] Figure 2 This is a cross-sectional view of the regulating pool from the front;

[0027] Figure 3 It is a cross-sectional view of the regulating tank from the right side;

[0028] Figure 4 It is a structural schematic diagram of the sludge stirring unit and the fixing frame;

[0029] Figure 5 It is a schematic diagram of the structure of the traction unit, the lifting unit and the mud scraping unit;

[0030] Figure 6 It is a structural schematic diagram of the sludge mixing unit;

[0031] Figure 7 It is a structural schematic diagram of the limit unit;

[0032] Figure 8 It is a structural schematic diagram of the connection head and the stirring motor being separated;

[0033] Fig. 9 It is a schematic diagram of the structure of each stirring part;

[0034] Fig.10 It is a structural schematic diagram of the mud collecting barrel;

[0035] Fig.11 It is a structural schematic diagram of the mud scraper frame;

[0036] Fig.12 It is a structural schematic diagram of the traction unit and the lifting unit;

[0037] Fig.13 It is a schematic diagram of the structure in which the locking unit and the lifting unit are separated;

[0038] Fig.14 It is a schematic diagram of the structure after the traction unit and the pulling unit are separated.

[0039] In the figure: 1 regulating tank, 11 water inlet pipe, 12 sludge discharge pipe, 13 drainage pipe, 14 mud collecting part, 15 fixed frame, 2 sludge circulation pipe, 3 driving unit, 31 rotating motor, 32 moving guide rail, 4 traction unit, 41 traction rope, 42 first traction wheel frame, 43 first winding frame, 431 first bearing seat, 432 first winding disk, 5 pulling unit, 51 pulling rope, 52 second traction wheel frame, 53 second winding frame, 531 second bearing seat, 532 second winding disk, 5321 limit socket, 6 locking unit, 61 hydraulic telescopic machine, 62 locking plug, 7 sludge stirring Unit, 71 stirring motor, 72 rotating shaft, 73 first stirring part, 731 stirring plate, 74 second stirring part, 741 stirring sheet, 75 third stirring part, 751 fixing plate, 752 hanging plate, 753 reinforcing rod, 8 scraping unit, 81 guide rail, 82 scraping frame, 821 guide block, 822 connecting rod, 823 scraping plate, 824 push handle, 9 mud collecting cylinder, 91 water inlet, 92 first drain outlet, 93 second drain outlet, 10 limiting unit, 101 connecting head, 1011 fixing ring, 1012 limiting hole, 1013 support foot, 102 supporting frame, 1021 limiting column. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0041] Reference Figure 1-14 A regulating tank with a sludge circulation function comprises a regulating tank 1, a fixing frame 15 is arranged in the middle of the upper surface of the regulating tank 1, a limiting unit 10 is arranged on the upper surface of the middle part of the fixing frame 15, a sludge stirring unit 7 is installed at the bottom of the limiting unit 10, a sludge circulation pipe 2 is arranged on the lower surface of the fixing frame 15, and a sludge collecting barrel 9 is arranged below the fixing frame 15, the sludge outlet of the sludge circulation pipe 2 is aligned with the sludge collecting barrel 9 below, a sludge scraping unit 8 is arranged on one side of the regulating tank 1, and the shaft of the sludge stirring unit 7 partially passes through the sludge collecting barrel 9;

[0042] A lifting unit 5 is provided on the upper surface of the regulating tank 1 at a side away from the scraping unit 8, a traction unit 4 is provided at one side of the lifting unit 5, a locking unit 6 is provided at a side of the lifting unit 5 away from the traction unit 4, and a driving unit 3 is provided at a side of the traction unit 4 away from the lifting unit 5;

[0043] The traction unit 4 is used for traction of the sludge scraping unit 8 , the lifting unit 5 is used for lifting the sludge stirring unit 7 , and the driving unit 3 is used for driving the lifting unit 5 and the traction unit 4 .

[0044] Among them, a mud collecting part 14 which is recessed downward to a certain depth is provided on one side of the bottom of the regulating tank 1, a sludge discharge pipe 12 connected to the outside is symmetrically provided on the tank wall on one side of the mud collecting part 14, and a drainage pipe 13 is provided above the bottom of the mud collecting part 14, and a water inlet pipe 11 is provided on the tank wall of the regulating tank 1 away from the mud collecting part 14. The sludge discharge pipe 12 facilitates the suction and discharge of sludge into the sludge thickening tank for sludge treatment.

[0045] The sludge stirring unit 7 includes a stirring motor 71, the upper part of the stirring motor 71 is installed and connected with the limit unit 10, the bottom output end of the stirring motor 71 is connected with a rotating shaft 72, the upper part of the rotating shaft 72 and located in the mud collecting barrel 9 is provided with a first stirring part 73, the middle part of the rotating shaft 72 is located above the first stirring part 73 and is provided with a second stirring part 74, and the bottom of the rotating shaft 72 is located below the second stirring part 74 and is provided with a third stirring part 75;

[0046] The first stirring part 73 includes two layers of a plurality of stirring plates 731 fixedly connected to each other. The stirring plates 731 are inclined at a certain angle and are all located in the mud collecting barrel 9. The stirring plates 731 are convenient for mixing the sewage with the circulating sludge flowing down.

[0047] The second stirring part 74 includes a plurality of curved stirring blades 741 , and the stirring blades 741 are evenly arranged in the middle of the shaft 72 . The large stirring blades 741 are convenient for further mixing.

[0048] The third stirring part 75 includes a plurality of fixed plates 751, which are evenly arranged at the bottom end of the shaft 72. A hanging piece 752 is arranged at the bottom of the fixed plate 751. A gap is left between the bottom of the hanging piece 752 and the bottom of the regulating tank 1, and reinforcing rods 753 are fixedly connected between the fixed plates 751. The reinforcing rods 753 are convenient for reinforcing the fixed plates 751, so that the fixed plates 751 are more firm, and the hanging piece 752 can scrape the sludge better.

[0049] Among them, the body of the mud collecting barrel 9 is arranged at the bottom of the fixed frame 15, and a water inlet 91 is opened through the body of the mud collecting barrel 9 on the side facing the water inlet pipe 11, and a second drain outlet 93 is opened through the bottom surface of the body of the mud collecting barrel 9. The body of the mud collecting barrel 9 is located above the second drain outlet 93 and has multiple first drain outlets 92 evenly opened through it. The first drain outlet 92 and the second drain outlet 93 facilitate the mixed sewage to be splashed downward, so that it is convenient for further stirring by the second stirring part 74.

[0050] The limiting unit 10 includes a support frame 102, the support frame 102 frame body is arranged at the middle of the upper surface of the fixing frame 15, the support frame 102 is symmetrically provided with limiting columns 1021, the upper part of the support frame 102 frame body is supported by a connector 101, and a stirring motor 71 is connected and installed below the connector 101, so that the support frame 102 can support the connector 101.

[0051] The upper disk of the connecting head 101 is arranged on the upper surface of the support frame 102 and can move up and down, and the connecting head 101 is symmetrically provided with limiting holes 1012 with the same diameter as the limiting column 1021, and a fixing ring 1011 is arranged in the middle of the upper surface of the upper disk of the connecting head 101, and the fixing ring 1011 is connected to the lifting unit 5, and the supporting feet 1013 are symmetrically arranged on the bottom surface of the upper disk of the connecting head 101, and the supporting feet 1013 are convenient for assisting in lifting the stirring motor 71.

[0052] Among them, the lifting unit 5 includes a second winding frame 53, the second winding frame 53 is arranged on one side of the regulating tank 1, and a lifting rope 51 is wound on the second winding frame 53. The end of the lifting rope 51 away from the second winding frame 53 is connected to the fixed ring 1011, and a plurality of second traction wheel frames 52 are arranged between the fixed ring 1011 and the second winding frame 53. The traction wheel on the second traction wheel frame 52 is provided with a lifting rope 51. The second traction wheel frame 52 is used for pulling the lifting rope 51. The second traction wheel frame 52 facilitates the traction of the lifting rope 51 to keep it in one line and prevent it from detaching.

[0053] The second winding frame 53 includes a second winding disk 532, and second bearing seats 531 are arranged on both sides of the disk body of the second winding disk 532, and the disk body of the second winding disk 532 is arranged on the second bearing seats 531 on both sides to rotate. The second winding disk 532 is driven to rotate by the driving unit 3, and a limiting hole 5321 is provided on the surface of the locking unit 6 on one side of the disk body of the second winding disk 532. The limiting hole 5321 facilitates the locking unit 6 to be locked, thereby ensuring that the driving unit 3 will not rotate after being disengaged.

[0054] Among them, the locking unit 6 includes a hydraulic telescopic machine 61, and a locking plug 62 is fixedly connected to the end of the telescopic rod of the hydraulic telescopic machine 61. The locking plug 62 can be inserted into the locking socket 5321. The locking plug 62 can effectively lock the second winding disk 532 to prevent it from rotating.

[0055] The scraper unit 8 includes guide rails 81 symmetrically arranged on the upper surfaces of both sides of the regulating tank 1 , and a slidable scraper frame 82 is arranged between the guide rails 81 on both sides. The guide rails 81 facilitate the guidance of the scraper frame 82 .

[0056] The scraper frame 82 includes a scraper plate 823, which is arranged on the upper surface of the bottom of the regulating tank 1 away from the bottom. Connecting rods 822 are symmetrically arranged on the upper surface of the scraper plate 823. The upper end of the connecting rod 822 is fixedly connected to a guide block 821. The guide block 821 is movably arranged on the guide rail 81. A pusher 824 is arranged on the upper surface of the guide block 821 on one side, and the front ends of the two side guide blocks 821 away from the pushers 824 are connected to the traction unit 4. The scraper plate 823 facilitates the slow scraping of the sludge to the mud collecting part 14.

[0057] Among them, the traction unit 4 includes a first winding frame 43, on which a traction rope 41 is arranged for winding, and one end of the traction rope 41 away from the first winding frame 43 is fixedly connected to the guide block 821, and a first traction wheel frame 42 is arranged between the guide block 821 and the first winding frame 43, and a plurality of traction wheels are arranged on the first traction wheel frame 42, and the traction rope 41 passes through the first traction wheel frame 42 and is pulled by the traction wheel; the first winding frame 43 includes a first winding disk 432, and first bearing seats 431 are arranged on both sides of the first winding disk 432, and the first winding disk 432 is arranged on the first bearing seats 431 on both sides to rotate, and the first winding disk 432 is driven by a one-side driving unit 3, and the first winding disk 432 is convenient for winding up the traction rope 41.

[0058] The driving unit 3 includes a movable guide rail 32, on which a transversely movable rotating motor 31 is arranged. The driving shaft of the rotating motor 31 can pass through the first winding disk 432 and the second winding disk 532 and be assembled therewith, so as to drive the first winding disk 432 and the second winding disk 532. The movable rotating motor 31 can conveniently rotate the first winding disk 432 and the second winding disk 532 for winding at the same time, and can also drive the second winding disk 532 for winding alone.

[0059] In this embodiment, the original sludge treatment process is that the sewage enters the regulating tank after reaching the grid, and then passes through the anaerobic tank and the aerobic tank for anaerobic-aerobic treatment process, using the biochemical principle of ammoniation-nitrification-denitrification, and then is sent to the MBR membrane tank and then enters the disinfection tank for disinfection to complete the effluent. This is a conventional sewage treatment process. When the MBR membrane tank is treated, sludge return and nitrification liquid will be returned to the anaerobic tank. The utility model changes the conventional sludge return pipe from the anaerobic tank to the regulating tank 1, and changes it to a sludge circulation pipe 2. After the sludge is circulated to the regulating tank 1, on the one hand, the flocculation effect of the sludge is used to precipitate the suspended matter in the sludge, reducing the burden of subsequent solid-liquid separation; on the other hand, a co-digestion reaction occurs with the sewage in the regulating tank 1, and the organic matter in the sludge is released as a carbon source for the denitrification reaction in the anaerobic tank, saving the addition of an external carbon source, and also through the sludge circulation, the amount of residual sludge is reduced, the burden of residual sludge reduction-transportation-disposal is reduced, and carbon emissions are reduced.

[0060] Moreover, the sludge stirring unit 7 in the regulating tank 1 can fully mix the circulating sludge sent into the sludge circulation pipe 2 with the sewage in the regulating tank, and use the fluidization effect of the sludge and sewage to carry out granulation reaction, thereby improving the sludge flocculation effect, promoting the co-digestion of the sludge, and increasing the release of organic matter.

[0061] First, the circulating sludge is discharged from the sludge circulation pipe 2 and flows into the regulating tank 1. The circulating sludge will flow vertically into the sludge collecting barrel 9 and mix with the sewage discharged into the sludge collecting barrel 9 from the water inlet 91 of the sludge collecting barrel 9 and sent into the regulating tank 1 through the water inlet pipe 11. The sludge collecting barrel 9 is used to form a small mixing space, which is convenient for the sewage coming in from the water inlet 91 and the circulating sludge left in the sludge circulation pipe 2 to be fully mixed, thereby improving the mixing effect of the sludge stirring unit 7.

[0062] The stirring motor 71 will drive the rotating shaft 72 to rotate slowly. First, the first stirring part 73 on the upper part of the rotating shaft 72, and the upper and lower layers of multiple stirring plates 731 set on the first stirring part 73, this inclined stirring plate 731 can effectively stir the sewage, and when the stirring plate 731 stirs clockwise, the stirring plate 731 is tilted forward as a whole, with the top facing the front and the bottom facing the mouth, so that the sewage and the circulating sludge can be effectively mixed, and the stirring blade is downward, so that the mixed new sewage can be quickly discharged from the first drain port 92 and the second drain port 93 to the outside of the sludge collecting barrel 9, which is convenient for the mixing of the new sewage and the circulating sludge, so that the new sewage can be circulated and mixed in the sludge collecting barrel 9.

[0063] The sewage discharged from the first drain outlet 92 and the second drain outlet 93 will be formed into a vortex by the multiple stirring blades 741 of the second stirring part 74, and will be further mixed with the external sewage, so that the circulating sludge and the sewage can be mixed more fully. In this process, because the circulating sludge is mixed with the sewage in the regulating tank 1, the sewage in the regulating tank 1 is subjected to flocculation and sedimentation to remove suspended particles in the sewage, and a part of the sludge can be quickly precipitated from the sewage to the bottom of the regulating tank 1, reducing the amount of residual sludge in the sewage discharged from the drain pipe 13 to the next process, thereby reducing the burden of residual sludge reduction-transportation-disposal and reducing carbon emissions.

[0064] The sludge accumulated at the bottom of the regulating tank 1 below the sludge stirring unit 7 will be stirred by the third stirring part 75, and a part of the sludge will be hung to the sludge collecting part 14. The sludge settled from above will be hung to the bottom of the sludge collecting part 14 of the regulating tank 1 by the rotating hanging piece 752, and the sludge will be extracted by the sludge discharge pipe 12 and sent to the sludge thickening tank for subsequent treatment of the sludge.

[0065] The other part of the sludge accumulated at the bottom of the regulating tank 1 and located between the sludge stirring unit 7 and the water inlet pipe 11 needs to be cleaned regularly after a long time because the precipitated sludge is thick. At this time, the driving unit 3 can drive the lifting unit 5 to lift the sludge stirring unit 7, so that a gap is left between the hanging piece 752 and the bottom of the regulating tank 1, so that the traction unit 4 can pull the scraping unit 8 to scrape the sludge.

[0066] First, the lifting unit 5 lifts the sludge lowering plate unit 7 a certain distance. At this time, the rotating motor 31 is located at the frontmost side of the movable guide rail 32. At this time, the driving shaft of the rotating motor 31 passes through the assembly holes in the middle of the first winding drum 423 and the second winding drum 532, so that when the driving shaft of the rotating motor 31 rotates, the first winding drum 423 and the second winding drum 532 cooperate with the first bearing seat 431 and the second bearing seat 531 to reel in at the same time, so as to reel in the traction rope 41 and the lifting rope 51.

[0067] After the pulling rope 51 is rolled up to a certain length, the pulling rope 51 cooperates with the traction wheel of the second traction wheel frame 52 to lift the connecting head 101 on the limiting unit 10, and the connecting head 101 cooperates with the support foot 1013 to lift the stirring motor 71 fixed at the bottom, so that the sludge stirring unit 7 can be lifted as a whole, and the disk of the connecting head 101 changes from the original state of being against the support frame 102 to the raised state, and the limiting hole 1012 of the connecting head 101 is on the limiting position of the limiting column 1021, so that the sludge stirring unit 7 can only be lifted up and down in a straight line, which plays a role of limiting and ensuring that the sludge stirring unit 7 will not shake when it is lifted.

[0068] The support frame 102 is used for supporting the connecting head 101 when it is not lifted up, so that the connecting head 101 can be supported by the support frame 102, thereby supporting the sludge stirring unit 7 as a whole, and the materials of each stirring part of the sludge stirring unit 7 are all light materials, so they can be lifted up.

[0069] When the sludge stirring unit 7 is raised, the lifting distance is fixed. When the limit socket 5321 on the second winding drum 532 is aligned with the locking plug 62, the drive shaft of the rotating motor 31 stops rotating and the locking unit 6 is locked. First, after the rotating motor 31 stops, the limit socket 5321 of the hydraulic telescopic machine 61 is aligned with the center of the locking plug 62. The telescopic rod of the hydraulic telescopic machine 61 will insert the locking plug 62 into the limit socket 5321, and the high-strength locking plug 62 can lock the second winding drum 532. When the locking plug 62 is locked, the movable guide rail 32 moves the rotating motor 31 backward, so that the drive shaft can be separated from the second winding drum 532 and out of the assembly state.

[0070] The driving shaft can only drive the first winding disk 432 to continue rotating, thereby winding up the traction rope 41, and cooperating with the traction wheels on the first traction wheel frame 42 to wind up the traction rope 41, so that the traction rope 41 can pull the scraper frame 82 to make a linear motion on the guide rail 81, so that the guide block 821 moves on the guide rail 81, and the scraper plate 823 at the bottom of the connecting rod 822 slowly hangs the sludge accumulated at the bottom after sedimentation to the bottom of the mud collecting part 14 for discharge. After winding up, when returning to its original position, the operator needs to climb onto the regulating tank 1 and use the push handle 824 to push the guide block 821 back slowly on the guide rail 81 to reset it.

[0071] In the utility model, the conventional sludge return pipe is changed from the anaerobic tank to be connected to the regulating tank 1, and is changed into a sludge circulation pipe 2. The sludge stirring unit 7 in the regulating tank 1 can be used to fully mix the circulating sludge sent into the sludge circulation pipe 2 with the sewage in the regulating tank, and the fluidization effect of the sludge and sewage is used to carry out granulation reaction, thereby improving the sludge flocculation effect and promoting the co-digestion of the sludge, increasing the release of organic matter and supplementing the carbon source for the sewage, and the sludge settled at the bottom is discharged to the bottom of the sludge collecting part 14 through the sludge scraping unit 8, so as to be discharged to the sludge concentration tank, thereby reducing the amount of residual sludge in the discharged sewage.

[0072] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A regulating tank with sludge circulation function, comprising a regulating tank (1), characterized in that: A fixing frame (15) is provided in the middle of the upper surface of the regulating tank (1), a limiting unit (10) is provided on the upper surface of the middle part of the fixing frame (15), a sludge stirring unit (7) is installed at the bottom of the limiting unit (10), a sludge circulation pipe (2) is provided on the lower surface of the fixing frame (15), and a sludge collecting barrel (9) is provided below the fixing frame (15), the sludge outlet of the sludge circulation pipe (2) is aligned with the sludge collecting barrel (9) below, a sludge scraping unit (8) is provided on one side of the regulating tank (1), and the shaft of the sludge stirring unit (7) partially passes through the sludge collecting barrel (9); A lifting unit (5) is provided on the upper surface of the regulating tank (1) at a side away from the scraping unit (8), a traction unit (4) is provided on one side of the lifting unit (5), a locking unit (6) is provided on the side of the lifting unit (5) away from the traction unit (4), and a driving unit (3) is provided on the side of the traction unit (4) away from the lifting unit (5); The traction unit (4) is used to pull the sludge scraping unit (8), the lifting unit (5) is used to lift the sludge stirring unit (7), and the driving unit (3) is used to drive the lifting unit (5) and the traction unit (4).

2. A regulating tank with sludge circulation function according to claim 1, characterized in that: A mud collecting portion (14) recessed downward to a certain depth is arranged on one side of the bottom of the regulating tank (1), a mud discharge pipe (12) connected to the outside is symmetrically arranged on the tank wall located on one side of the mud collecting portion (14), and a drainage pipe (13) is arranged above the bottom of the mud collecting portion (14), and a water inlet pipe (11) is arranged on the tank wall of the regulating tank (1) on the side away from the mud collecting portion (14).

3. The regulating tank with sludge circulation function according to claim 1 is characterized in that: The sludge stirring unit (7) comprises a stirring motor (71), the upper part of the stirring motor (71) is installed and connected to the limit unit (10), the bottom output end of the stirring motor (71) is connected to a rotating shaft (72), the upper part of the rotating shaft (72) and located in the mud collecting barrel (9) is provided with a first stirring portion (73), the middle part of the rotating shaft (72) and located above the first stirring portion (73) is provided with a second stirring portion (74), and the bottom part of the rotating shaft (72) and located below the second stirring portion (74) is provided with a third stirring portion (75); The first stirring part (73) comprises a plurality of stirring plates (731) which are fixedly connected in two layers, the stirring plates (731) are inclined at a certain angle, and the stirring plates (731) are all located in the mud collecting barrel (9); The second stirring portion (74) comprises a plurality of curved stirring blades (741), and the stirring blades (741) are evenly arranged in the middle of the shaft body of the rotating shaft (72); The third stirring portion (75) comprises a plurality of fixed plates (751), the fixed plates (751) being evenly arranged at the bottom end of the shaft body of the rotating shaft (72), a hanging piece (752) being arranged at the bottom of the plate body of the fixed plates (751), a gap being left between the bottom of the hanging piece (752) and the bottom of the regulating tank (1), and a reinforcing rod (753) being fixedly connected between the plate bodies of the fixed plates (751).

4. A regulating tank with sludge circulation function according to claim 3, characterized in that: The body of the mud collecting barrel (9) is arranged at the bottom of the fixed frame (15); a water inlet (91) is provided through the body of the mud collecting barrel (9) on the side facing the water inlet pipe (11); a second drainage outlet (93) is provided through the bottom surface of the body of the mud collecting barrel (9); and a plurality of first drainage outlets (92) are evenly provided through the body of the mud collecting barrel (9) above the second drainage outlet (93).

5. The regulating tank with sludge circulation function according to claim 3 is characterized in that: The limiting unit (10) comprises a support frame (102), the support frame (102) being arranged at the middle of the upper surface of the fixed frame (15), limiting columns (1021) being symmetrically arranged on the support frame (102), a connecting head (101) being arranged on the upper part of the support frame (102), and a stirring motor (71) being connected and installed below the connecting head (101); The upper disk of the connecting head (101) is arranged on the upper surface of the support frame (102) and can move up and down, and a limiting hole (1012) having the same diameter as the limiting column (1021) is symmetrically opened on the connecting head (101), a fixing ring (1011) is arranged in the middle of the upper surface of the upper disk of the connecting head (101), and the fixing ring (1011) is connected to the lifting unit (5), and a supporting foot (1013) is symmetrically arranged on the bottom surface of the upper disk of the connecting head (101).

6. A regulating tank with sludge circulation function according to claim 5, characterized in that: The pulling unit (5) comprises a second winding frame (53), the second winding frame (53) is arranged on one side of the regulating tank (1), a pulling rope (51) is wound on the second winding frame (53), one end of the pulling rope (51) away from the second winding frame (53) is connected to a fixing ring (1011), a plurality of second traction wheel frames (52) are arranged between the fixing ring (1011) and the second winding frame (53), a traction wheel on the second traction wheel frame (52) is provided with a pulling rope (51), and the second traction wheel frame (52) is used for pulling the pulling rope (51); The second winding frame (53) comprises a second winding disk (532), and second bearing seats (531) are arranged on both sides of the disk body of the second winding disk (532). The disk body of the second winding disk (532) is arranged to rotate on the second bearing seats (531) on both sides. The second winding disk (532) is driven to rotate by the driving unit (3), and a limiting plug hole (5321) is provided on the surface of the second winding disk (532) facing the locking unit (6) on one side.

7. A regulating tank with sludge circulation function according to claim 6, characterized in that: The locking unit (6) comprises a hydraulic telescopic machine (61), and a locking plug (62) is fixedly connected to the end of the telescopic rod of the hydraulic telescopic machine (61), and the locking plug (62) can be inserted into the limit socket (5321).

8. The regulating tank with sludge circulation function according to claim 1, characterized in that: The scraper unit (8) comprises guide rails (81), the guide rails (81) are symmetrically arranged on the upper surfaces of both sides of the regulating tank (1), and a slidable scraper frame (82) is arranged between the guide rails (81) on both sides; The scraper frame (82) comprises a scraper plate (823), the scraper plate (823) being arranged on the upper surface of the bottom of the regulating tank (1) away from the bottom, the scraper plate (823) being symmetrically provided with connecting rods (822) on the upper surface of the plate body, the upper end of the connecting rod (822) being fixedly connected with a guide block (821), the guide block (821) being movably arranged on a guide rail (81), a push handle (824) being arranged on the upper surface of the block body of one side of the guide block (821), and the front ends of the two side guide blocks (821) away from the push handle (824) being connected to the traction unit (4).

9. The regulating tank with sludge circulation function according to claim 8, characterized in that: The traction unit (4) comprises a first winding frame (43), a traction rope (41) is arranged on the first winding frame (43) for winding, one end of the traction rope (41) away from the first winding frame (43) is fixedly connected to a guide block (821), a first traction wheel frame (42) is arranged between the guide block (821) and the first winding frame (43), a plurality of traction wheels are arranged on the first traction wheel frame (42), and the traction rope (41) passes through the first traction wheel frame (42) and is pulled by the traction wheel; the first winding frame (43) comprises a first winding disk (432), first bearing seats (431) are arranged on both sides of the first winding disk (432), the first winding disk (432) is arranged on the first bearing seats (431) on both sides for rotation, and the first winding disk (432) is driven by a driving unit (3) on one side; The driving unit (3) comprises a movable guide rail (32), on which a transversely movable rotating motor (31) is arranged, and a driving shaft of the rotating motor (31) can pass through the first winding reel (432) and the second winding reel (532) and be assembled therewith, so as to drive the first winding reel (432) and the second winding reel (532).

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