A biochemically active fine particle sludge separator with sand selection and discharge functions

Abstract

The present invention relates to the technical field of sludge treatment equipment, and discloses a biochemically active fine granular sludge separator with sand selection and sand discharge functions, including a feed body, a cone, an ultrasonic activated sludge enhancer and a sand settling box, water inlet pipes are installed on opposite sides of the feed body, the lower end of the feed body is fixedly connected to the upper end of the ultrasonic activated sludge enhancer, the upper end of the cone is fixed to the lower end of the ultrasonic activated sludge enhancer, the sand settling box is fixed to the lower end of the cone, and a flow guide mechanism is installed in the feed body, and the flow guide mechanism forms a double channel through two channels with a height difference. The biochemically active fine granular sludge separator with sand selection and sand discharge functions can separate and treat sewage in a secondary sedimentation tank, and can separate and discharge sediment and water in sections, and the discharged fine granular sludge can also be refluxed for secondary utilization.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment equipment, in particular to a biochemically active fine particle sludge separator with sand selection and discharge functions. Background Art

[0002] When treating domestic sewage, the raw water first enters the primary sedimentation tank. The rising flow rate of sewage in the primary sedimentation tank is 0.6-0.7 mm / s. The precipitated sludge is lifted to the sludge tank by air. The precipitated sewage enters the contact oxidation tank for biochemical treatment. The contact tank is divided into three levels, with a total residence time of more than 4 hours. The contact oxidation time of the enhanced equipment can reach 6 hours. The sewage after biochemical treatment flows to the secondary sedimentation tank. The secondary sedimentation tank is two vertical flow sedimentation tanks running in parallel, with an rising flow rate of 0.3-0.4 mm / s. The sludge is lifted to the sludge tank by air. The sewage discharged from the secondary sedimentation tank is added with flocculants in the pipeline using a dosing device before entering the flocculation tank. Coagulant can make the impurities such as suspended solids, colloids and organic matter in the sewage condense into larger particles, which are then separated by sedimentation, filtration and other methods. The flocculated sewage enters the disinfection tank and disinfection device, and adopts the disinfection method of solid chlorine tablet contact dissolution. The disinfection tank and disinfection device can continuously change the dosage according to the amount of water output, so as to achieve the purpose of more water output and more dosage, and less water output and less dosage. The disinfected sewage can meet the discharge standards. In addition, the integrated sewage treatment equipment also needs to be equipped with a fan room. The fan usually adopts two L-type Roots blowers, which can automatically operate alternately to supply the required air volume for the entire sewage treatment equipment.

[0003] At present, after the sewage after biochemical treatment is discharged into the secondary sedimentation tank, the settled silt is regularly cleaned and piled up in the sludge pool. However, since the settled sludge contains not only active fine particles but also a large amount of sand, the active fine particles cannot be returned to the biological reactor for reuse, resulting in a waste of active fine particles. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a biochemical active fine granular sludge separator with sand selection and discharge functions, which solves the problem that the active fine granular sludge cannot be returned to the biological reaction tank for reuse because the sedimentation sludge contains not only active fine granular sludge but also a large amount of sand, resulting in waste of active fine granular sludge.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a biochemically active fine granular sludge separator with sand selection and discharge functions, comprising a feed body, a cone, an ultrasonic activated sludge enhancer and a sand settling box, wherein water inlet pipes are installed on opposite sides of the feed body, the lower end of the feed body is fixedly connected to the upper end of the ultrasonic activated sludge enhancer, the upper end of the cone is fixed to the lower end of the ultrasonic activated sludge enhancer, and the sand settling box is fixed to the lower end of the cone;

[0008] A flow guide mechanism is installed in the feed body. The flow guide mechanism forms a double channel through two channels with a height difference. The double channel is used to guide sewage into the feed body from two different directions, so that the sewage forms a rotating flow field in the cone.

[0009] The upper end of the feed body is fixedly connected to an end cover, the upper end of the end cover is fixedly connected to an overflow pipe, the lower end of the overflow pipe extends into the feed body, and the lower end of the end cover is fixedly connected to a flow-disturbing mechanism, the flow-disturbing mechanism is used to balance the swirl in the feed body, so that the swirl enters the cone smoothly;

[0010] A mud discharge pipe is fixedly connected to one side of the cone, a sand discharge pipe is obliquely fixedly connected to one side of the sand settling box, and a sealing assembly is installed in the sand discharge pipe.

[0011] Preferably, the flow guiding mechanism includes two flow guiding parts, both of which are arc-shaped structures and have opposite opening directions, the pipe mouth of the water inlet pipe is fixedly connected to the flow guiding part, a circular ring is sleeved in the feed body, the upper end of the circular ring is fixedly connected to a first flow guiding body, the first flow guiding body forms a first vortex channel in the feed body, the lower end of the circular ring is fixedly connected to a second flow guiding body, the second flow guiding body forms a second vortex channel in the feed body, and the first vortex channel and the second vortex channel together constitute a double channel;

[0012] A limiting ring is fixedly connected in the feed body, the limiting ring contacts the lower end of the second flow guide body, the lower end of the end cover contacts the upper end of the first flow guide body, an annular groove is provided at the edge of the circular ring, and an adjusting component is installed in the annular groove.

[0013] Preferably, the adjustment component includes an arc-shaped rack, which is fixed in an annular groove, a rectangular tube is fixedly connected to one side of the feed body, a spur rack is sleeved in the rectangular tube, the spur rack is meshed with the arc-shaped rack, a mounting portion is provided on one side of the rectangular tube, the mounting portion is rotatably connected to a gear shaft through a ball bearing, the gear shaft is meshed with the spur rack, and a first motor is fixedly connected to the upper end of the rectangular tube, and the output end of the first motor is fixedly connected to the upper end of the gear shaft.

[0014] Preferably, two rubber rings are clamped at the edge of the circular ring through a first clamping groove, and two second clamping grooves are provided on the inner side of the feed body, and the rubber rings are clamped in the second clamping grooves.

[0015] Preferably, the spoiler mechanism includes a cylinder, an upper end of the cylinder is provided with an inner recess, the inner recess is rotatably connected to the tube wall of the overflow pipe through a sealed bearing, the cylinder is sleeved in a circular ring and has a plurality of rectangular holes, a plurality of rectangular holes are all obliquely fixedly connected with a guide plate, one end of the guide plate extends into the cylinder and is provided with a bending portion, a gear ring is sleeved on the tube wall of the overflow pipe, the lower end of the gear ring is fixed to one side of the inner recess through a connecting block, one side of the end cover is rotatably connected with a rotating shaft and a rotating shaft through a sealed bearing, a driving gear is fixedly connected to the shaft wall of the rotating shaft, a second motor is fixedly connected to the upper end of the end cover, an output end of the second motor is fixedly connected to the upper end of the rotating shaft, a driven gear is fixedly connected to the shaft wall of the rotating shaft, the driven gear is meshed with the driving gear, a transition gear is fixedly connected to the shaft wall of the rotating shaft, and the transition gear is meshed with the gear ring.

[0016] Preferably, a spoiler is fixedly connected to the lower end of the cylinder, a plurality of notches are provided on the side wall of the spoiler, spoilers are fixedly connected in the plurality of notches, a flared portion is provided at the lower end of the spoiler, the flared portion is in contact with the inner wall of the feed body, a plurality of spoilers are fixedly connected to the inner wall of the lower end of the spoiler located in the flared portion, and a rubber pad is fixedly connected to the lower end of the end cover, and the rubber pad is in contact with the upper end of the cylinder.

[0017] Preferably, a cross bar is fixedly connected inside the spoiler, an impeller is fixedly connected to the rod wall of the cross bar, the impeller is coaxially arranged with the cylinder and the overflow pipe, and the lower end of the overflow pipe is sleeved with the impeller.

[0018] Preferably, the sealing assembly includes a first circular plate and a second circular plate, a plurality of fan-shaped openings are opened at the edge of the first circular plate, a plurality of sand discharge openings are opened on the side wall of the second circular plate, a support shaft is fixedly connected to one side of the first circular plate, the center of the second circular plate is rotatably connected to the support shaft through a ball bearing, a fixing ring is fixedly connected to the mouth of the sand discharge pipe by bolts, the fixing ring is in contact with one side of the second circular plate, a strip hole is opened on the wall of the sand discharge pipe, a brake block is arranged in the strip hole, and the brake block is fixed at the edge of the second circular plate.

[0019] Preferably, one side of the first circular plate is rotatably connected to a main shaft via a sealed bearing, a spiral strip is fixedly connected to the shaft wall of the main shaft, one side of the sand settling box is fixedly connected to a mounting tube, the mounting tube is coaxially arranged with the inclined sand discharge tube, one end of the mounting tube is fixedly connected to a third motor, and the output end of the third motor is fixedly connected to one end of the main shaft.

[0020] Preferably, an inner sleeve is fixedly connected inside the cone, a first extension portion is provided at the upper end of the inner sleeve, the first extension portion extends to the lower opening of the ultrasonic activated sludge enhancer, and a second extension portion is provided at the lower end of the inner sleeve, the second extension portion extends to the upper opening of the sedimentation box.

[0021] (III) Beneficial effects

[0022] Compared with the prior art, the present invention provides a biochemically active fine particle sludge separator with sand selection and discharge functions, which has the following beneficial effects:

[0023] 1. When the present invention is in use, the water in the secondary sedimentation tank is sent to the feed body through the water inlet pipe, and the sewage is introduced into the feed body from two different directions through the two channels of the guide mechanism to form a vortex. At this time, the sewage passes through the spoiler to make the vortex smoothly enter the cone cylinder to generate a high-speed rotating flow field. Under the action of gravity, the sand particles quickly move down and deposit in the sand settling box, and the sludge is separated from the sand particles and deposited at the lower end of the cone cylinder. The separated clean water forms a middle vortex and is concentrated in the center of the feed body and the cone cylinder, and is finally discharged through the overflow pipe. In this way, the sewage in the secondary sedimentation tank can be separated and treated, and the silt and water can be separated and discharged in stages. At the same time, the discharged biochemically active fine granular sludge can also be returned for secondary utilization.

[0024] 2. The flow guide mechanism provided in the present invention can enable the sewage to form a stable vortex and enter the cone cylinder. Moreover, when the vortex speed needs to be changed, under the condition that the water pressure at the water inlet end remains unchanged, the first motor is started to drive the gear shaft to move the spur rack, and the movement of the spur rack drives the arc-shaped rack to rotate, and the rotation of the arc-shaped rack drives the circular ring to rotate the first flow guide body and the second flow guide body. At this time, the first flow guide body and the second flow guide body can change the opening area of ​​the flow guide part. In this way, under the condition that the water pressure at the water inlet remains unchanged, when the opening area is reduced, the speed at which the sewage enters the feed body is increased, thereby increasing the speed of the rotating flow field in the feed body, and thus can cope with sewage with different sediment contents.

[0025] 3. The present invention is provided with a spoiler mechanism, which starts the second motor to drive the rotating shaft to rotate the driving gear, the rotation of the driving gear drives the driven gear to rotate the rotating shaft and the transition gear, the rotation of the transition gear drives the gear ring to rotate the cylinder, and when the cylinder rotates, the spoiler and the spoiler plate are used to drive the sewage to form a rotating flow field. In this way, when the sewage pressure is insufficient, mechanical force can be used to ensure that a rotating flow field required for separating sediment can be formed in the feed body and the cone. When the water inlet pressure is sufficient, the sewage passes through multiple rectangular holes and under the action of the guide plate and the bending part, multiple streams of water are formed to cut into the feed body, and finally a stable rotating flow field is formed in the cone, so that the sediment can be fully separated. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The structural schematic diagram, cross-sectional view and cross-sectional view of the cone of a biochemically active fine granular sludge separator with sand selection and discharge functions proposed by the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of a disturbance mechanism in a biochemically active fine granular sludge separator with sand selection and discharge functions proposed by the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of a cylinder and a spoiler in a biochemically active fine granular sludge separator with sand selection and discharge functions proposed by the present invention;

[0029] Figure 4 A schematic diagram of the structure of the flow disturbance component in a biochemically active fine granular sludge separator with sand selection and discharge function proposed by the present invention Figure 1 ;

[0030] Figure 5 A schematic diagram of the structure of the flow disturbance component in a biochemically active fine granular sludge separator with sand selection and discharge function proposed by the present invention Figure 2 ;

[0031] Figure 6 A schematic diagram of the structure of the flow disturbance component in a biochemically active fine granular sludge separator with sand selection and discharge function proposed by the present invention Figure 3 ;

[0032] Figure 7 This is a schematic structural diagram of a feed body, a water inlet pipe and a diversion part in a biochemically active fine granular sludge separator with sand selection and discharge functions proposed by the present invention;

[0033] Figure 8 This is a schematic structural diagram of a sand settling box and a sealing assembly in a biochemically active fine granular sludge separator with sand selection and discharge functions proposed by the present invention;

[0034] Fig. 9 This is a schematic structural diagram of a first circular plate and a second circular plate in a biochemically active fine granular sludge separator with sand selection and discharge functions proposed by the present invention;

[0035] Fig.10 This is a schematic diagram of the structure of a sand settling tube and a fixing ring in a biochemically active fine granular sludge separator with sand selection and discharge functions proposed by the present invention;

[0036] Fig.11 A biochemically active fine particle sludge separator with sand selection and discharge function proposed by the present invention Figure 8 A magnified view of the structure at center.

[0037] In the figure: 1, feed body; 2, water inlet pipe; 3, ultrasonic activated sludge intensifier; 4, cone; 5, mud discharge pipe; 6, third motor; 7, sand discharge pipe; 8, sand settling box; 9, guide part; 10, end cover; 11, second motor; 12, overflow pipe; 13, first vortex channel; 14, first guide body; 15, ring; 16, second guide body; 17, spoiler; 18, inner sleeve; 19, spiral strip; 20, impeller; 21, cross bar; 22, spoiler; 2 3. Cylinder; 24. Gear ring; 25. Rubber pad; 26. Driving gear; 27. Driven gear; 28. Transition gear; 29. ​​Spoiler; 30. Guide plate; 31. Rubber ring; 32. Arc rack; 33. Rectangular tube; 34. First motor; 35. Gear shaft; 36. Straight rack; 37. Second vortex channel; 38. Limiting ring; 39. First circular plate; 40. Second circular plate; 41. Sector-shaped opening; 42. Brake block; 43. Strip hole; 44. Fixing ring. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example 1: Refer to the attached Figure 1-Figure 11 ,A biochemically active fine granular sludge separator with sand selection and sand discharge function, comprising a feed body 1, a cone 4, an ultrasonic activated sludge enhancer 3 and a sand settling box 8, characterized in that: water inlet pipes 2 are installed on opposite sides of the feed body 1, the lower end of the feed body 1 is fixedly connected to the upper end of the ultrasonic activated sludge enhancer 3, the upper end of the cone 4 is fixed to the lower end of the ultrasonic activated sludge enhancer 3, the sand settling box 8 is fixed to the lower end of the cone 4, an inner sleeve 18 is fixedly connected in the cone 4, a first extension portion is provided at the upper end of the inner sleeve 18, the first extension portion extends to the lower end opening of the ultrasonic activated sludge enhancer 3, a second extension portion is provided at the lower end of the inner sleeve 18, the second extension portion extends to the upper end opening of the sand settling box 8, a flow guide mechanism is installed in the feed body 1, the flow guide mechanism forms a double channel through two channels with a height difference, and the double channel is used to introduce sewage into the feed body 1 from two different directions, so that the sewage forms a rotating flow field in the cone 4;

[0040] The upper end of the feed body 1 is fixedly connected with an end cover 10, the upper end of the end cover 10 is fixedly connected with an overflow pipe 12, the lower end of the overflow pipe 12 extends into the feed body 1, the lower end of the end cover 10 is fixedly connected with a flow disturbance mechanism, the flow disturbance mechanism is used to balance the swirl in the feed body 1, so that the swirl smoothly enters the cone 4, one side of the cone 4 is fixedly connected with a mud discharge pipe 5, one side of the sand settling box 8 is obliquely fixedly connected with a sand discharge pipe 7, a sealing assembly is installed in the sand discharge pipe 7, and the sealing assembly includes a first circular plate 39 and a second circular plate 40, a plurality of fan-shaped openings 41 are opened at the edge of the first circular plate 39, a plurality of sand discharge openings are opened on the side wall of the second circular plate 40, a support shaft is fixedly connected to one side of the first circular plate 39, and a plurality of fan-shaped openings 41 are opened on the side wall of the second circular plate 40, a support shaft is fixedly connected to one side of the first circular plate 39, and a plurality of fan-shaped openings 41 are opened on the side wall of the second circular plate 40, a support shaft is fixedly connected to one side of the second circular plate 40, and a plurality of fan-shaped openings 41 ... The center of the circular plate 40 is rotatably connected to the support shaft through a ball bearing, a fixing ring 44 is fixedly connected to the pipe mouth of the sand discharge pipe 7 by bolts, and the fixing ring 44 contacts one side of the second circular plate 40. A strip hole 43 is opened on the pipe wall of the sand discharge pipe 7, and a brake block 42 is arranged in the strip hole 43. The brake block 42 is fixed at the edge of the second circular plate 40. One side of the first circular plate 39 is rotatably connected to the main shaft through a sealed bearing, and a spiral strip 19 is fixedly connected to the shaft wall of the main shaft. One side of the sand settling box 8 is fixedly connected to a mounting pipe, and the mounting pipe is coaxially arranged with the inclined sand discharge pipe 7. One end of the mounting pipe is fixedly connected to the third motor 6, and the output end of the third motor 6 is fixedly connected to one end of the main shaft.

[0041] When the present invention is in use, a lifting pump is used to deliver water in the secondary sedimentation tank to the feed body 1 through the water inlet pipe 2, and sewage is introduced into the feed body 1 from two different directions through two channels with a height difference provided by the flow guide mechanism to form a vortex. At this time, the sewage passes through the flow spoiler to make the vortex smoothly enter the cone cylinder 4 to generate a high-speed rotating flow field. The components with high density in the sewage move downward in the axial direction under the action of the vortex field, and move outward in the radial direction at the same time. When reaching the cone section, it moves downward along the wall of the device and is discharged from the bottom flow port. In this way, an external vortex flow field is formed, and the components with low density move toward the central axis and form an upward-moving inner vortex at the center of the axis, so as to achieve the purpose of two-phase separation. Under the action of gravity, the sand particles quickly move downward and are deposited in the sand settling box 8, and the sludge is separated from the sand particles and settled. It accumulates at the lower end of the cone 4, and the separated clean water forms an inner vortex and is concentrated in the center of the feed body 1 and the cone 4, and is finally discharged through the overflow pipe 12. Under the action of the ultrasonic activated sludge enhancer 3, the reproduction and growth rate of activated sludge microorganisms can be improved to form aerobic granular sludge. The selected fine granular sludge is returned to the biological reactor system from the sludge discharge pipe 5. After the reflux, it can be mixed with the sewage newly entering the sewage treatment system, which increases the substrate concentration of the fine granular sludge particles in the biological reactor and prolongs the contact time with the substrate. In this way, the sewage in the secondary sedimentation tank can be separated and treated, and the silt and water can be separated and discharged in stages, so that the sewage in the secondary sedimentation tank can be effectively separated and treated, and the discharged fine granular sludge can also be returned for secondary utilization.

[0042] Embodiment 2: Based on embodiment 1, the difference is that;

[0043] See attached Figure 4-Figure 7 The flow guiding mechanism includes two flow guiding parts 9, both of which are arc-shaped structures and have opposite opening directions. The pipe mouth of the water inlet pipe 2 is fixedly connected to the flow guiding part 9. A circular ring 15 is sleeved in the feed body 1. The upper end of the circular ring 15 is fixedly connected to a first flow guiding body 14. The first flow guiding body 14 forms a first vortex channel 13 in the feed body 1. The lower end of the circular ring 15 is fixedly connected to a second flow guiding body 16. The second flow guiding body 16 forms a second vortex channel 37 in the feed body 1. The first vortex channel 13 and the second vortex channel 37 together constitute a double channel.

[0044] A limit ring 38 is fixedly connected inside the feed body 1, and the limit ring 38 contacts the lower end of the second flow guide 16. The lower end of the end cover 10 contacts the upper end of the first flow guide 14. An annular groove is provided at the edge of the circular ring 15, and an adjustment component is installed in the annular groove. The adjustment component includes an arc rack 32, which is fixed in the annular groove. A rectangular tube 33 is fixedly connected to one side of the feed body 1, and a spur rack 36 is sleeved in the rectangular tube 33, and the spur rack 36 is meshed with the arc rack 32. A mounting portion is provided on one side of the rectangular tube 33, and the mounting portion is rotatably connected to a gear shaft 35 through a ball bearing, and the gear shaft 35 is meshed with the spur rack 36. A first motor 34 is fixedly connected to the upper end of the rectangular tube 33, and the output end of the first motor 34 is fixedly connected to the upper end of the gear shaft 35. Two rubber rings 31 are clamped at the edge of the circular ring 15 through the first clamping groove, and two second clamping grooves are provided on the inner side of the feed body 1, and the rubber ring 31 is clamped in the second clamping groove.

[0045] The present invention is provided with a flow guide mechanism. When in use, the flow guide part 9 conveys the sewage in the water inlet pipe 2 to the feed body 1 according to a certain cut-in angle, and under the action of the first flow guide 14 and the second flow guide 16 in the feed body 1, the two streams of sewage are conveyed into the vortex from two directions, so that the sewage can form a stable vortex and enter the cone 4. When the vortex speed needs to be changed, under the condition that the water pressure at the water inlet end remains unchanged, the first motor 34 is started to drive the gear shaft 35 to move the spur rack 36, and the movement of the spur rack 36 drives the arc rack 32 to rotate, and the rotation of the arc rack 32 drives the ring 15 to rotate the first flow guide 14 and the second flow guide 16. At this time, the first flow guide 14 and the second flow guide 16 can change the opening area of ​​the flow guide part 9. Under the condition that the water pressure at the water inlet end remains unchanged, when the opening area is reduced, the speed at which the sewage enters the feed body 1 increases, so that the speed of the rotating flow field in the feed body 1 can be increased, and it can be used to deal with sewage with different sediment contents.

[0046] Embodiment 3: Based on embodiment 1, the difference is that;

[0047] Refer to the attached Figure 2-Figure 3 The flow-disturbing mechanism includes a cylinder 23, an inner concave portion is provided at the upper end of the cylinder 23, and the inner concave portion is rotatably connected to the wall of the overflow pipe 12 through a sealed bearing. The cylinder 23 is sleeved in the ring 15 and has a plurality of rectangular holes, and a guide plate 30 is fixedly connected to each of the plurality of rectangular holes in an inclined manner. One end of the guide plate 30 extends into the cylinder 23 and is provided with a bending portion. A toothed ring 24 is sleeved on the wall of the overflow pipe 12, and the lower end of the toothed ring 24 is fixed to one end of the inner concave portion through a connecting block. On one side, a rotating shaft and a rotating shaft are rotatably connected through a sealed bearing on one side of the end cover 10, a driving gear 26 is fixedly connected to the shaft wall of the rotating shaft, a second motor 11 is fixedly connected to the upper end of the end cover 10, an output end of the second motor 11 is fixedly connected to the upper end of the rotating shaft, a driven gear 27 is fixedly connected to the shaft wall of the rotating shaft, the driven gear 27 is meshed with the driving gear 26, a transition gear 28 is fixedly connected to the shaft wall of the rotating shaft, and the transition gear 28 is meshed with the gear ring 24;

[0048] The lower end of the cylinder 23 is fixedly connected with a spoiler 17, and the side wall of the spoiler 17 is provided with a plurality of notches, and spoiler plates 22 are fixedly connected in the plurality of notches. The lower end of the spoiler 17 is provided with a flared portion, and the flared portion contacts the inner wall of the feed body 1. The lower inner wall of the spoiler 17 is located in the flared portion and is fixedly connected with a plurality of spoiler plates 29. The lower end of the end cover 10 is fixedly connected with a rubber pad 25, and the rubber pad 25 contacts the upper end of the cylinder 23. A cross bar 21 is fixedly connected in the spoiler 17, and an impeller 20 is fixedly connected to the rod wall of the cross bar 21. The impeller 20 is coaxially arranged with the cylinder 23 and the overflow pipe 12, and the lower end of the overflow pipe 12 is sleeved with the impeller 20.

[0049] The spoiler mechanism provided in the present invention, when in use, starts the second motor 11 to drive the rotating shaft to rotate the driving gear 26, the driving gear 26 rotates to drive the driven gear 27 to rotate the rotating shaft and the transition gear 28, the transition gear 28 rotates to drive the gear ring 24 to rotate the cylinder 23, and when the cylinder 23 rotates, the spoiler 29 and the spoiler plate 22 are used to drive the sewage to form a rotating flow field, so that when the sewage pressure is insufficient, mechanical force can be used to ensure that the rotating flow field required for separating sediment can be formed in the feed body 1 and the cone 4. When the water inlet pressure is sufficient, the sewage passes through multiple rectangular holes and under the action of the guide plate 30 and the bending portion, multiple streams of water are formed to cut into the feed body 1, and finally a stable rotating flow field is formed in the cone 4, so that the sediment can be fully separated.

[0050] It should be noted that the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A biochemically active fine granular sludge separator with sand selection and discharge functions, comprising a feed body (1), a cone (4), an ultrasonic activated sludge enhancement instrument (3) and a sand settling box (8), characterized in that: Water inlet pipes (2) are installed on opposite sides of the feed body (1); the lower end of the feed body (1) is fixedly connected to the upper end of the ultrasonic activated sludge enhancement device (3); the upper end of the cone cylinder (4) is fixed to the lower end of the ultrasonic activated sludge enhancement device (3); and the sedimentation box (8) is fixed to the lower end of the cone cylinder (4); A flow guide mechanism is installed in the feed body (1), and the flow guide mechanism forms a double channel through two channels with a height difference, and uses the double channel to guide sewage into the feed body (1) from two different directions, so that the sewage forms a rotating flow field in the cone (4); The upper end of the feed body (1) is fixedly connected to an end cover (10), the upper end of the end cover (10) is fixedly connected to an overflow pipe (12), the lower end of the overflow pipe (12) extends into the feed body (1), and the lower end of the end cover (10) is fixedly connected to a flow-disturbing mechanism, the flow-disturbing mechanism is used to balance the swirl flow in the feed body (1) so that the swirl flow enters the cone (4) smoothly; A mud discharge pipe (5) is fixedly connected to one side of the cone (4), a sand discharge pipe (7) is obliquely fixedly connected to one side of the sand settling box (8), and a sealing assembly is installed in the sand discharge pipe (7); The flow guiding mechanism comprises two flow guiding parts (9), both of which are arc-shaped structures and have opening directions opposite to each other; the pipe mouth of the water inlet pipe (2) is fixedly connected to the flow guiding part (9); a circular ring (15) is sleeved inside the feed body (1); the upper end of the circular ring (15) is fixedly connected to a first flow guiding body (14); the first flow guiding body (14) forms a first vortex channel (13) inside the feed body (1); the lower end of the circular ring (15) is fixedly connected to a second flow guiding body (16); the second flow guiding body (16) forms a second vortex channel (37) inside the feed body (1); the first vortex channel (13) and the second vortex channel (37) together form a double channel; A limit ring (38) is fixedly connected inside the feed body (1), the limit ring (38) contacts the lower end of the second guide body (16), the lower end of the end cover (10) contacts the upper end of the first guide body (14), an annular groove is provided at the edge of the circular ring (15), an adjustment component is installed in the circular groove, and the circular ring (15) is driven by the adjustment component to rotate the first guide body (14) and the second guide body (16), and the rotation of the first guide body (14) and the second guide body (16) can change the opening area of ​​the guide part (9).

2. The biochemically active fine granular sludge separator with sand selection and discharge functions according to claim 1, characterized in that: The adjustment assembly comprises an arc-shaped rack (32), the arc-shaped rack (32) being fixed in the annular groove; a rectangular tube (33) is fixedly connected to one side of the feed body (1); a spur rack (36) is sleeved in the rectangular tube (33); the spur rack (36) meshes with the arc-shaped rack (32); a mounting portion is provided on one side of the rectangular tube (33); the mounting portion is rotatably connected to a gear shaft (35) via a ball bearing; the gear shaft (35) meshes with the spur rack (36); a first motor (34) is fixedly connected to the upper end of the rectangular tube (33); and an output end of the first motor (34) is fixedly connected to the upper end of the gear shaft (35).

3. The biochemically active fine granular sludge separator with sand selection and discharge functions according to claim 1, characterized in that: Two rubber rings (31) are clamped at the edge of the circular ring (15) via a first clamping groove, and two second clamping grooves are provided on the inner side of the feed body (1), and the rubber rings (31) are clamped in the second clamping grooves.

4. The biochemically active fine granular sludge separator with sand selection and discharge functions according to claim 1, characterized in that: The flow-disturbing mechanism comprises a cylinder (23), the upper end of which is provided with an inner concave portion, the inner concave portion being rotatably connected to the wall of the overflow pipe (12) via a sealing bearing, the cylinder (23) being sleeved in a circular ring (15) and having a plurality of rectangular holes, the plurality of rectangular holes being all obliquely fixedly connected with a guide plate (30), one end of the guide plate (30) extending into the cylinder (23) and being provided with a bent portion, a toothed ring (24) being sleeved on the wall of the overflow pipe (12), the lower end of the toothed ring (24) being fixed to one end of the inner concave portion via a connecting block, A rotating shaft and a rotating shaft are rotatably connected on one side of the end cover (10) via a sealed bearing, a driving gear (26) is fixedly connected to the shaft wall of the rotating shaft, a second motor (11) is fixedly connected to the upper end of the end cover (10), an output end of the second motor (11) is fixedly connected to the upper end of the rotating shaft, a driven gear (27) is fixedly connected to the shaft wall of the rotating shaft, the driven gear (27) is meshed with the driving gear (26), and a transition gear (28) is fixedly connected to the shaft wall of the rotating shaft, the transition gear (28) is meshed with the gear ring (24).

5. The biochemically active fine granular sludge separator with sand selection and discharge functions according to claim 4, characterized in that: The lower end of the cylinder (23) is fixedly connected to a spoiler (17), a side wall of the spoiler (17) is provided with a plurality of notches, and spoiler plates (22) are fixedly connected in each of the plurality of notches. The lower end of the spoiler (17) is provided with a flared portion, and the flared portion is in contact with the inner wall of the feed body (1). The inner wall of the lower end of the spoiler (17) is located in the flared portion and fixedly connected to a plurality of spoiler plates (29). The lower end of the end cover (10) is fixedly connected to a rubber pad (25), and the rubber pad (25) is in contact with the upper end of the cylinder (23).

6. The biochemically active fine granular sludge separator with sand selection and discharge functions according to claim 5, characterized in that: A cross bar (21) is fixedly connected inside the spoiler (17), an impeller (20) is fixedly connected to the rod wall of the cross bar (21), the impeller (20) is coaxially arranged with the cylinder (23) and the overflow pipe (12), and the lower end of the overflow pipe (12) is sleeved with the impeller (20).

7. The biochemically active fine granular sludge separator with sand selection and discharge functions according to claim 1, characterized in that: The sealing assembly comprises a first circular plate (39) and a second circular plate (40), the edge of the first circular plate (39) is provided with a plurality of fan-shaped openings (41), the side wall of the second circular plate (40) is provided with a plurality of sand discharge openings, one side of the first circular plate (39) is fixedly connected to a support shaft, the center of the second circular plate (40) is rotatably connected to the support shaft via a ball bearing, a fixing ring (44) is fixedly connected to the pipe opening of the sand discharge pipe (7) via bolts, the fixing ring (44) is in contact with one side of the second circular plate (40), a strip hole (43) is provided on the pipe wall of the sand discharge pipe (7), a brake block (42) is arranged in the strip hole (43), and the brake block (42) is fixed to the edge of the second circular plate (40).

8. The biochemically active fine granular sludge separator with sand selection and discharge functions according to claim 7, characterized in that: One side of the first circular plate (39) is rotatably connected to a main shaft via a sealed bearing, a spiral strip (19) is fixedly connected to the shaft wall of the main shaft, one side of the sand settling box (8) is fixedly connected to a mounting pipe, the mounting pipe is coaxially arranged with an inclined sand discharge pipe (7), one end of the mounting pipe is fixedly connected to a third motor (6), and an output end of the third motor (6) is fixedly connected to one end of the main shaft.

9. The biochemically active fine granular sludge separator with sand selection and discharge functions according to claim 1, characterized in that: An inner sleeve (18) is fixedly connected inside the cone (4), a first extension portion is provided at the upper end of the inner sleeve (18), the first extension portion extends to the lower opening of the ultrasonic activated sludge enhancement device (3), and a second extension portion is provided at the lower end of the inner sleeve (18), the second extension portion extends to the upper opening of the sedimentation box (8).

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