Shallow air flotation sludge collecting device

Abstract

The utility model relates to a shallow air flotation sludge collecting device which comprises an inclined sludge skimming spoon and a speed reducing motor arranged on the outer side of the higher end of the sludge skimming spoon, the mud skimming spoon comprises a first end plate and a second end plate which are concentrically arranged, a mud outlet pipe which is concentrically inserted on the outer side of the first end plate, a partition plate which is fixed between the centers of the inner walls of the first end plate and the second end plate, and two baffles which are respectively fixed on two sides of the partition plate and are arranged on the outer side of an opening at the root of the mud outlet pipe in a central symmetry manner; the gear motor is fixed on the outer wall of the second end plate, and a rotating shaft of the gear motor is concentrically fixed on the second end plate; a boosting mechanism is further arranged between the gear motor and the second end plate. According to the sludge skimming device, sludge can be timely emptied in a short time to effectively prevent blockage, so that the autorotation speed of the sludge skimming spoon can be correspondingly increased to greatly improve the working efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of air flotation water purification, in particular to a shallow air flotation sludge collection device. Background Art

[0002] The shallow air flotation water purification equipment is integrally cylindrical, and its functions include coagulation, air flotation, scum skimming, sedimentation, and sludge scraping; during the working process of the shallow air flotation water purification equipment, impurities in the sewage will continuously float up and gradually concentrate on the water surface to form sludge; at this time, the sludge skimming spoon arranged in the shallow air flotation water purification equipment will rotate continuously so that its two scroll blades rotate alternately, and then scrape the sludge with the two scroll blades; in addition, the sludge skimming spoon will also rotate around the pool of the shallow air flotation water purification equipment through a supporting connecting mechanism to achieve revolution, so as to scrape the sludge at each place on the water surface; due to the small design slope of the existing sludge skimming spoon and the poor flow of the sludge, when the sludge collected by the scroll blade last time has not completely flowed out, the sludge collected next time will enter again, resulting in the sludge being blocked due to the inability to be emptied in time in a short time, and only by reducing the rotation speed of the sludge skimming spoon can it be alleviated, but this causes the problem of low work efficiency and needs to be further improved. Summary of the Utility Model

[0003] Aiming at the current situation of the above-mentioned existing technology, the technical problem to be solved by the utility model is to provide a shallow air flotation sludge collection device that can empty the sludge in time in a short time to effectively prevent blockage, and then can correspondingly increase the rotation speed of the sludge skimming spoon to greatly improve the work efficiency.

[0004] The technical solution adopted by the utility model to solve the above technical problems is: a shallow air flotation sludge collection device, including an inclined sludge skimming spoon and a reduction motor arranged outside the higher end of the sludge skimming spoon. The sludge skimming spoon includes a first end plate and a second end plate arranged concentrically, a sludge outlet pipe concentrically inserted outside the first end plate, a partition plate fixed between the centers of the inner walls of the first end plate and the second end plate, and two baffles respectively fixed on both sides of the partition plate and symmetrically arranged at the outside of the root opening of the sludge outlet pipe; the reduction motor is fixed on the outer wall of the second end plate, and the rotating shaft of the reduction motor is concentrically fixed on the second end plate, and its characteristics are that:

[0005] Two first bow-shaped plates are symmetrically arranged at the edge of the first end plate and extend outwards, and two second bow-shaped plates are symmetrically arranged at the edge of the second end plate and respectively cooperate with the two first bow-shaped plates, and the radius of the second bow-shaped plate is greater than that of the first bow-shaped plate.

[0006] A leaf-rolling plate is also fixedly arranged between the arc-shaped edges of one of the first arc-shaped plates and one of the second arc-shaped plates on the same side. One side edge of each leaf-rolling plate near the center connection line of the first end plate and the second end plate is hermetically fixed on the partition plate. A mud passage cavity is formed between one of the leaf-rolling plates and one of the baffles on the same side and the corresponding side of the partition plate.

[0007] A boosting mechanism is further arranged between the reduction motor and the second end plate. The boosting mechanism includes a shaft sleeve fixedly arranged on the reduction motor and concentrically sleeved outside the rotating shaft of the reduction motor, and a sleeve hermetically fixed on the outer wall of the second end plate and concentrically arranged with the shaft sleeve. The end opening of the shaft sleeve is hermetically and rotatably inserted into the inner part of the end opening of the sleeve or sleeved outside the end opening of the sleeve.

[0008] Two air outlet grooves or two air outlet hole units are formed in the second end plate. The two air outlet grooves or the two air outlet hole units are respectively arranged on both sides of the partition plate in central symmetry and are respectively communicated with the interiors of the two mud passage cavities.

[0009] The rotating shaft of the reduction motor passes through the sleeve and is concentrically fixed on the second end plate and is located between the two air outlet grooves or the two air outlet hole units.

[0010] At least one air inlet joint inserted into the outer wall of the shaft sleeve and communicated with the interior of the shaft sleeve.

[0011] Preferably, the air outlet hole unit includes a plurality of air outlet holes arranged in a straight line in sequence. Each of the air outlet grooves or each of the air outlet holes is arranged inside the root opening of the sleeve.

[0012] Preferably, a flared cylinder is formed outward at the end opening of the shaft sleeve. The end opening of the flared cylinder is hermetically and rotatably inserted into the inner part of the end opening of the sleeve or sleeved outside the end opening of the sleeve.

[0013] Preferably, at least one first sealing ring is sleeved on the outer peripheral surface or the inner peripheral surface of the flared cylinder. The outer wall of each first sealing ring is slidably attached to the inner peripheral surface or the outer peripheral surface of the sleeve so that the flared cylinder and the sleeve maintain a sealed state during relative rotation.

[0014] Preferably, at least one second sealing ring is sleeved on the outer peripheral surface of the rotating shaft of the reduction motor. The outer wall of each second sealing ring is slidably attached to the inner peripheral surface of the shaft sleeve so that the rotating shaft of the reduction motor and the shaft sleeve maintain a sealed state during relative rotation.

[0015] Preferably, a circumferentially arranged conical part is further formed at the outer edge of the root of the flared cylinder. At least one air inlet joint is inserted outside the conical part and communicated with the interior of the flared cylinder.

[0016] Preferably, at least one bearing ring is further provided between the outer peripheral surface of the flaring cylinder and the inner peripheral surface of the sleeve or between the inner peripheral surface of the flaring cylinder and the outer peripheral surface of the sleeve.

[0017] Compared with the prior art, the advantages of the present utility model are as follows: the present utility model can make the intermittent pressure air flow generated by the air cannon act on the sludge located in the sludge chamber through the boosting mechanism, and then push the sludge to quickly flow along the outer wall of the partition plate towards the sludge outlet pipe, so as to effectively prevent blockage by timely emptying the sludge in a short time, and further can correspondingly increase the rotation speed of the sludge skimming spoon to greatly improve the working efficiency. Description of the Drawings

[0018] Figure 1 is the exploded view of the present utility model;

[0019] Figure 2 is the exploded view of the present utility model after installing the boosting mechanism;

[0020] Figure 3 is the exploded view of the sludge skimming spoon of the present utility model;

[0021] Figure 4 is the exploded view of the present utility model when adopting the air outlet unit;

[0022] Figure 5 is the schematic diagram of the installation positions of the first sealing ring, the second sealing ring and the bearing ring of the present utility model;

[0023] Figure 6 is the schematic diagram of the working state of the present utility model after being installed on the shallow layer air flotation water purification equipment. Detailed Embodiments

[0024] Unless otherwise defined, the technical terms or scientific terms used in the present utility model should have the ordinary meanings understood by those with ordinary skills in the field to which the present utility model belongs. The "first", "second" and similar terms used in the present utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0025] To keep the following description of the embodiments of the present utility model clear and concise, the detailed description of known functions and known components is omitted in the present utility model.

[0026] As Figures 1 to 5 shown, a shallow air flotation sludge collection device includes a sludge skimming spoon 2 disposed obliquely and a speed reduction motor 1 disposed outside the higher end of the sludge skimming spoon 2. The sludge skimming spoon 2 includes a first end plate 21 and a second end plate 22 arranged concentrically, a sludge discharge pipe 24 concentrically inserted outside the first end plate 21, a partition plate 25 fixed between the centers of the inner walls of the first end plate 21 and the second end plate 22, and two baffles 26 respectively fixed on both sides of the partition plate 25 and symmetrically arranged at the outer side of the root opening of the sludge discharge pipe 24; the speed reduction motor 1 is fixed on the outer wall of the second end plate 22, and the rotating shaft of the speed reduction motor 1 is concentrically fixed on the second end plate 22.

[0027] Two first arc-shaped plates 211 arranged symmetrically about the center are formed outward at the edge of the first end plate 21, and two second arc-shaped plates 221 arranged symmetrically about the center and respectively cooperating with the two first arc-shaped plates 211 are formed outward at the edge of the second end plate 22. The radius of the second arc-shaped plate 221 is greater than that of the first arc-shaped plate 211.

[0028] A scroll plate 23 is also fixed between the arc-shaped edges of a first arc-shaped plate 211 and a second arc-shaped plate 221 on the same side. One side edge of each scroll plate 23 near the center connection line of the first end plate 21 and the second end plate 22 is hermetically fixed on the partition plate 25. A sludge flow cavity 27 is formed between a scroll plate 23 and a baffle 26 on the same side and the corresponding side of the partition plate 25.

[0029] A boosting mechanism 3 is further provided between the speed reduction motor 1 and the second end plate 22. The boosting mechanism 3 includes a shaft sleeve 31 fixed on the speed reduction motor 1 and concentrically sleeved outside the rotating shaft of the speed reduction motor 1, and a sleeve 32 hermetically fixed on the outer wall of the second end plate 22 and concentrically arranged with the shaft sleeve 31. The end opening of the shaft sleeve 31 is hermetically and rotatably inserted inside the end opening of the sleeve 32 or sleeved outside the end opening of the sleeve 32.

[0030] Two air outlet grooves 222 or two air outlet hole units are formed in the second end plate 22. The two air outlet grooves 222 or the two air outlet hole units are symmetrically arranged on both sides of the partition plate 25 and respectively communicate with the interiors of the two sludge flow cavities 27.

[0031] The rotating shaft of the speed reduction motor 1 passes through the sleeve 32 and is concentrically fixed on the second end plate 22 and is located between the two air outlet grooves 222 or the two air outlet hole units.

[0032] At least one air inlet joint 36 communicating with the inside of the shaft sleeve 31 is inserted on the outer wall of the shaft sleeve 31.

[0033] The air outlet hole unit includes a plurality of air outlet holes 223 arranged in a straight line in sequence. Each air outlet groove 222 or each air outlet hole 223 is provided inside the root opening of the sleeve 32.

[0034] At the end opening of the shaft sleeve 31, a flared cylinder 311 is formed outward. The end opening of the flared cylinder 311 is sealed and rotatably inserted inside the end opening of the sleeve 32 or sleeved outside the end opening of the sleeve 32.

[0035] At least one first sealing ring 33 is sleeved on the outer peripheral surface or the inner peripheral surface of the flared cylinder 311. The outer wall of each first sealing ring 33 is slidably attached to the inner peripheral surface or the outer peripheral surface of the sleeve 32 so that the flared cylinder 311 and the sleeve 32 remain in a sealed state during relative rotation.

[0036] At least one second sealing ring 34 is sleeved on the outer peripheral surface of the rotating shaft of the reduction motor 1. The outer wall of each second sealing ring 34 is slidably attached to the inner peripheral surface of the shaft sleeve 31 so that the rotating shaft of the reduction motor 1 and the shaft sleeve 31 remain in a sealed state during relative rotation.

[0037] A circumferentially arranged conical part 312 is further formed at the outer edge of the root of the flared cylinder 311. At least one air inlet joint 36 is inserted outside the conical part 312 and communicated with the inside of the flared cylinder 311.

[0038] At least one bearing ring 35 is further provided between the outer peripheral surface of the flared cylinder 311 and the inner peripheral surface of the sleeve 32 or between the inner peripheral surface of the flared cylinder 311 and the outer peripheral surface of the sleeve 32.

[0039] Working principle:

[0040] As Figure 6As shown in the figure, the framework of the shallow air flotation water purification equipment mainly consists of an outer cylinder 4, a middle cylinder 5 concentrically arranged inside the outer cylinder 4, and an inner cylinder 6 concentrically arranged inside the middle cylinder 5. After the shallow air flotation water purification equipment works, the sewage exists between the outer cylinder 4 and the middle cylinder 5. Above the outer cylinder 4, the middle cylinder 5 and the inner cylinder 6, there is also a rotatable frame 7 arranged obliquely. The inner side of the rotatable frame 7 is rotatably connected to the top opening of the middle cylinder 5, and the outer side of the rotatable frame 7 is rotatably connected to the top opening of the outer cylinder 4. The reduction motor 1 and the sludge skimming spoon 2 are both arranged inside the rotatable frame 7. The reduction motor 1 is fixed on the rotatable frame 7. The sludge discharge pipe 24 in the sludge skimming spoon 2 is movably connected above the top opening of the middle cylinder 5 through a support mechanism 8 so that the end opening thereof is exactly obliquely arranged above the top opening of the inner cylinder 6. Start the reduction motor 1 to rotate its rotating shaft, and then drive the entire sludge skimming spoon 2 to rotate self - clockwise by means of the second end plate 22. At the same time, the sludge skimming spoon 2 will also revolve with the rotatable frame 7. When the straight edge on the other side of any one of the scroll plates 23 in the sludge skimming spoon 2 will scoop the sludge floating on the surface of the sewage into the inside of the scroll plate 23 during the self - rotation process. After that, the sludge will first enter the sludge flow cavity 27 under the action of self - rotation, and then flow in the direction of the sludge discharge pipe 24 depending on the slope of the sludge flow cavity 27, and finally flow out into the inner cylinder 6 through the sludge discharge pipe 24. The purpose of self - rotation is to make the two scroll plates 23 work alternately, and the purpose of revolution is to enable the sludge skimming spoon 2 to collect the sludge at every place on the surface of the sewage. The above structures and principles are all prior arts.

[0041] Since the slope of the sludge skimming spoon 2 is not large and the flow of the sludge is poor, when the sludge collected by the scroll plate 23 last time has not completely flowed out, the sludge collected next time will enter again, which will cause the sludge flow cavity 27 to be blocked in a short time. It can only be relieved by reducing the self - rotation speed of the sludge skimming spoon 2, but this results in low work efficiency.

[0042] The characteristics of the present utility model are as follows: A boosting mechanism 3 is provided between the reduction motor 1 and the second end plate 22. The air outlet of the separately purchased air cannon is connected to at least one air inlet joint 36 via a pipeline. The air cannon will introduce the airflow with a certain pressure into the air inlet joint 36 at a certain frequency. Subsequently, it enters the sleeve 32 along the annular region between the rotating shaft of the reduction motor 1 and the shaft sleeve 31, or can directly enter the sleeve 32 through the air inlet joint 36 provided on the conical portion 312, and then enters the interiors of the two sludge flow chambers 27 respectively through the two air outlet grooves 222 or the two air outlet hole units provided in the second end plate 22. Since the sludge flows alternately along the outer walls on both sides of the partition plate 25 during the flow, the intermittent pressure airflow blown out from the two air outlet grooves 222 or the two air outlet hole units will push the sludge located on the partition plate 25 to flow rapidly towards the direction of the sludge outlet pipe 24, thereby quickly discharging the sludge located in the sludge flow chamber 27 to prevent blockage, and thus accelerating the rotation speed of the sludge skimming spoon 2 to improve the working efficiency; the setting of each first sealing ring 33 and each second sealing ring 34 can effectively prevent the airflow from escaping outward to ensure the sludge boosting effect.

[0043] The present utility model can make the intermittent pressure airflow generated by the air cannon act on the sludge located in the sludge flow chamber 27 through the boosting mechanism 3, and then push the sludge to flow rapidly along the outer wall of the partition plate 25 towards the sludge outlet pipe 24, so as to timely empty the sludge in a short time and effectively prevent blockage, and thus can correspondingly accelerate the rotation speed of the sludge skimming spoon 2 to greatly improve the working efficiency.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present utility model.

Claims

1. A shallow air flotation sludge collection device, comprising a sludge scraping spoon arranged obliquely and a reduction motor arranged outside the higher end of the sludge scraping spoon. The sludge scraping spoon includes a first end plate and a second end plate arranged concentrically, a sludge discharge pipe concentrically inserted outside the first end plate, a partition plate fixed between the centers of the inner walls of the first end plate and the second end plate, and two baffles respectively fixed on both sides of the partition plate and symmetrically arranged outside the root opening of the sludge discharge pipe; the reduction motor is fixed on the outer wall of the second end plate, and the rotating shaft of the reduction motor is concentrically fixed on the second end plate. Its characteristics are as follows: Two first bow-shaped plates symmetrically arranged about the center are formed outward at the edge of the first end plate, and two second bow-shaped plates symmetrically arranged about the center and respectively cooperating with the two first bow-shaped plates are formed outward at the edge of the second end plate, and the radius of the second bow-shaped plate is greater than that of the first bow-shaped plate; A scroll plate is fixed between the arc-shaped edges of one of the first bow-shaped plates and one of the second bow-shaped plates on the same side. One side edge of each scroll plate near the center connection line of the first end plate and the second end plate is hermetically fixed on the partition plate, and a sludge passage cavity is formed between one scroll plate and one baffle on the same side and the corresponding side of the partition plate; A boosting mechanism is further arranged between the reduction motor and the second end plate. The boosting mechanism includes a sleeve fixed on the reduction motor and concentrically sleeved outside the rotating shaft of the reduction motor, and a sleeve tube hermetically fixed on the outer wall of the second end plate and concentrically arranged with the sleeve. The end opening of the sleeve is hermetically and rotatably inserted inside the end opening of the sleeve tube or sleeved outside the end opening of the sleeve tube; Two air outlet grooves or two air outlet hole units are formed in the second end plate. The two air outlet grooves or the two air outlet hole units are symmetrically arranged about the center on both sides of the partition plate and respectively communicate with the interiors of the two sludge passage cavities; The rotating shaft of the reduction motor passes through the sleeve tube and is concentrically fixed on the second end plate and is located between the two air outlet grooves or the two air outlet hole units; At least one air inlet joint communicating with the inside of the sleeve is inserted on the outer wall of the sleeve; 2. The shallow air flotation sludge collection device according to claim 1, characterized in that, The air outlet hole unit includes a plurality of air outlet holes arranged in sequence on the same straight line. Each air outlet groove or each air outlet hole is arranged inside the root opening of the sleeve tube; 3. The shallow air flotation sludge collection device according to claim 1, characterized in that, A flared cylinder is formed outward at the end opening of the sleeve. The end opening of the flared cylinder is hermetically and rotatably inserted inside the end opening of the sleeve tube or sleeved outside the end opening of the sleeve tube; 4. The shallow air flotation sludge collection device according to claim 3, characterized in that, At least one first sealing ring is sleeved on the outer peripheral surface or the inner peripheral surface of the flared cylinder. The outer wall of each first sealing ring is slidably attached to the inner peripheral surface or the outer peripheral surface of the sleeve tube so that the flared cylinder and the sleeve tube maintain a sealed state during relative rotation; 5. A shallow air flotation sludge collection device according to claim 4, characterized in that At least one second sealing ring is sleeved on the outer peripheral surface of the rotating shaft of the reduction motor. The outer wall of each second sealing ring is slidably attached to the inner peripheral surface of the sleeve so that the rotating shaft of the reduction motor and the sleeve maintain a sealed state during relative rotation; 6. The shallow air flotation sludge collection device according to claim 3, characterized in that, A circumferentially arranged conical part is further formed at the outer edge of the root of the flared cylinder. At least one air inlet joint is inserted outside the conical part and communicates with the inside of the flared cylinder.

7. A shallow air flotation sludge collection device according to claim 3, characterized in that, At least one bearing ring is further provided between the outer peripheral surface of the flaring cylinder and the inner peripheral surface of the sleeve or between the inner peripheral surface of the flaring cylinder and the outer peripheral surface of the sleeve.

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