Centrifugal bubble eliminating device

Abstract

The utility model discloses a centrifugal bubble eliminating device which comprises a motor and a centrifugal machine, the periphery of the centrifugal machine is open, the centrifugal machine is provided with a flywheel and a suction inlet, the suction inlet faces the liquid level in an aeration chamber, the motor drives the flywheel to rotate, and the centrifugal machine is further provided with a top supporting plate and a bottom supporting plate. The center of the top supporting plate and the center of the bottom supporting plate are both provided with holes and connected through a supporting rod, the flywheel is located between the top supporting plate and the bottom supporting plate and comprises a flywheel shaft and blades, the flywheel shaft penetrates through the center hole of the top supporting plate, the tail end of the flywheel shaft is a disc, and the blades are fixed to the lower surface of the disc. The opening of the collecting cover faces the liquid level in the aeration chamber. During working, the motor drives the flywheel to rotate, air in the centrifugal machine is reduced, internal and external pressure difference is formed, negative pressure is formed at the opening of the collecting cover, bubbles are sucked into the centrifugal machine, the bubbles are broken through impact of the flywheel and the action of centrifugal force, and accordingly defoaming is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field especially, relate to a kind of aeration chamber defoaming device of marine domestic sewage treatment equipment. BACKGROUND

[0002] At present, in the domestic sewage treatment system of ship, due to the high concentration of sewage and the rich organic matter, a large amount of foam is easily generated in the biochemical treatment process. These foams not only reduce the aeration efficiency and affect the oxygen transfer in the biochemical tank, but also may cause water accumulation and blockage of the aeration pipeline, causing more complex maintenance problems. The traditional solution often relies on the addition of chemical defoaming agent, but this may adversely affect the microbial community of the biochemical system or increase the difficulty of the backend treatment. At the same time, the increase in treatment cost also brings environmental pollution, therefore, the development of a physical defoaming technology that does not rely on chemical additives has become an industry demand. SUMMARY

[0003] In order to solve the defects in the above-mentioned prior art, the utility model provides a centrifugal water bubble elimination device, which breaks the water bubble by centrifugal force and flywheel impact, realizes gas-liquid separation and eliminates the water bubble on the liquid surface in the aeration chamber.

[0004] In order to solve the above technical problems, the utility model is realized by the following technical scheme:

[0005] A centrifugal water bubble elimination device, comprising: a centrifuge, the periphery of the centrifuge is open and has a flywheel and a suction port, the suction port is directed to the liquid surface in the aeration chamber, and an electric motor, the electric motor drives the flywheel to rotate.

[0006] The centrifugal water bubble elimination device of the technical scheme, the electric motor drives the flywheel to rotate, the air in the centrifuge is reduced, a pressure difference is formed between the inside and the outside, thereby forming a negative pressure at the opening of the suction port. In this way, the water bubble on the liquid surface near the suction port is sucked into the centrifuge and broken by the flywheel or the centrifugal force generated by rotation, thereby achieving gas-liquid separation and eliminating the water bubble.

[0007] In the specific embodiment of the utility model, the centrifuge has a top support plate and a bottom support plate, the top support plate and the bottom support plate are connected by a support rod and have a central opening, and the central opening of the bottom support plate is the suction port of the centrifuge.

[0008] In the specific embodiment of the utility model, the flywheel is located between the top support plate and the bottom support plate, the flywheel includes a flywheel shaft and a blade, the flywheel shaft passes through the central opening of the top support plate, and the blade is fixed on the flywheel shaft.

[0009] In the embodiment of the utility model, the end of the flywheel shaft is a disc, the disc is located at the underside of the top support plate, and the blades are fixed to the lower surface of the disc.

[0010] In the embodiment of the utility model, the suction inlet is connected with a collecting cover, and the opening of the collecting cover faces the liquid surface in the aeration chamber.

[0011] In the embodiment of the utility model, a gearbox is arranged between the motor and the centrifugal machine, and the motor drives the flywheel to rotate through the gearbox.

[0012] In the embodiment of the utility model, the centrifugal machine is provided with a protective cover, and the upper and lower edges of the protective cover are connected with the edges of the top support plate and the bottom support plate respectively.

[0013] In the embodiment of the utility model, the sidewall of the protective cover is provided with through holes in a distributed manner, and the through holes are circular, elliptical, star-shaped or rhombic.

[0014] In the embodiment of the utility model, the top support plate and the bottom support plate are circular, the central hole is circular, and the support rod is cylindrical and located at the edge of the top support plate and the bottom support plate.

[0015] In the embodiment of the utility model, the top of the top support plate is provided with a fixing rod, the fixing rod fixes the centrifugal machine to the inner side of the top cover of the aeration chamber, and the motor and the gearbox are arranged on the outer side of the top cover of the aeration chamber.

[0016] The utility model has the beneficial effects that: firstly, the motor drives the flywheel to rotate, the air in the centrifugal machine is reduced, the pressure difference between the inside and the outside is formed, and thus the negative pressure is formed at the opening of the collecting cover, the water bubbles on the liquid surface close to the opening of the collecting cover are sucked into the centrifugal machine, and are broken by the flywheel or the centrifugal force, so that the gas-liquid separation is realized, and the effect of eliminating water bubbles is achieved. Secondly, the speed of the flywheel can be adjusted through the gearbox, so that the speed of the flywheel can be adjusted according to the situation of the water bubbles on the liquid surface in the aeration chamber to achieve a better defoaming effect. Thirdly, the centrifugal machine is provided with a protective cover, and the sidewall of the protective cover has through holes, so that the flywheel can be protected, and the water droplets produced after the water bubbles are broken can return to the aeration chamber through the through holes. Finally, the defoaming process is realized by the centrifugal force and the impact of the flywheel, and is a purely physical means without adding any chemical reagent, so that the cost is low and no environmental pollution is caused. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further described below in combination with the drawings:

[0018] Figure 1The centrifugal water bubble eliminating device structure schematic view of the utility model;

[0019] Figure 2 The centrifugal machine structure schematic view of the utility model with protective cover;

[0020] Figure 3 The centrifugal machine structure schematic view of the utility model;

[0021] Figure 4 The sewage treatment equipment structure schematic view.

[0022] In the drawing,

[0023] 100, centrifugal machine, 101, flywheel, 102, top support plate, 103, bottom support plate, 104, blade, 105, disc, 106, support rod, 107, protective cover, 108, through hole, 109, flywheel shaft, 110, fixed rod, 111, suction inlet, 200, motor, 300, collection cover, 400, gearbox, 500, sewage treatment equipment, 501, first aeration chamber, 502, second aeration chamber, 503, top cover. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] It should be understood that the structures, proportions, sizes, etc. shown in the drawings of the specification are only used to cooperate with the content disclosed in the specification, to enable those skilled in the art to understand and read, and are not used to limit the limiting conditions of the embodiments of the utility model, so they do not have technical substantive significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "top", "bottom", "side", "middle" and "one" in the specification are only for the convenience of clear description, and are not used to limit the scope of the utility model that can be implemented. The change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the scope of the utility model that can be implemented.

[0026] For example, Figure 1 And Figure 3As shown, the centrifugal water bubble eliminating device comprises a centrifuge 100 and a motor 200, the centrifuge 100 is arranged in an aeration chamber, the centrifuge 100 is open around and has a flywheel 101 and a suction inlet 111, the suction inlet 111 faces the liquid surface in the aeration chamber. When working, the motor 200 drives the flywheel 101 to rotate, the air in the centrifuge 100 is discharged, a pressure difference between the inside and the outside is formed to generate negative pressure at the suction inlet 111 of the centrifuge 100.

[0027] The centrifuge 100 also has a top support plate 102 and a bottom support plate 103, the top support plate 102 and the bottom support plate 103 are both provided with a central hole, the central hole of the bottom support plate 103 is the suction inlet 111 of the centrifuge 100, and the top support plate 102 and the bottom support plate 103 are connected through a support rod 106, so that the structure of the centrifuge 100 is relatively stable, and the flywheel 101 is located between the top support plate 102 and the bottom support plate 103. In the embodiment, the top support plate 102 and the bottom support plate 103 are both circular and the central holes thereof are also circular, and the support rod 106 is cylindrical and is distributed at the edge of the top support plate 102 and the bottom support plate 103.

[0028] The flywheel 101 comprises a flywheel shaft 109 and a blade 104, the flywheel shaft 109 passes through the central hole of the top support plate 102 and its end is a disc 105, the disc 105 is located at the lower side of the top support plate 102, and the blade 104 is fixed to the lower surface of the disc 105. The motor 200 drives the disc 105 to rotate through the flywheel shaft 109, and the blade 104 fixed to the disc 105 also rotates.

[0029] The bottom support plate 103 is connected with a collecting cover 300 at the edge of the lower side of the central hole, the opening of the collecting cover 300 faces and is close to the liquid surface in the aeration chamber, the collecting cover 300 is in a horn shape, and the opening facing the liquid surface is large, so that the water bubble on the liquid surface is more convenient to collect.

[0030] When the water bubble eliminating device works, the motor 200 drives the flywheel 101 to rotate through the flywheel shaft 109, and the air in the centrifuge 100 is discharged, so that the air in the centrifuge 100 is reduced, a pressure difference between the inside and the outside is formed to generate negative pressure at the opening of the collecting cover 300 facing the liquid surface, so that the water bubble on the liquid surface near the opening of the collecting cover 300 is sucked into the centrifuge 100. The rotating flywheel 101 will hit the water bubble to break the water bubble, and the centrifugal force generated by the rotation will also tear the water bubble, so that the water bubble is finally broken through the double action of the impact of the flywheel 101 and the centrifugal force, the gas-liquid separation is realized, and the water droplets generated after the separation return to the inside of the aeration chamber, so that the water bubble on the liquid surface in the aeration chamber is eliminated.

[0031] In operation, in order to adjust the rotating speed of the flywheel 101, a gearbox 400 is arranged between the motor 200 and the centrifuge 100, the motor 200 drives the flywheel shaft 109 through the gearbox 400 to rotate the flywheel 101. In this way, the rotating speed of the flywheel 101 can be adjusted through the gearbox 400 to adjust the suction force of the centrifuge 100, the higher the rotating speed of the flywheel 101, the greater the suction force of the centrifuge, so that larger water bubbles can be sucked in. Therefore, according to the water bubble situation on the liquid surface in the aeration chamber, the rotating speed of the flywheel 101 can be reasonably set through the gearbox 400, so as to achieve better defoaming effect.

[0032] In combination Figure 2 As shown in the figure, the sewage treatment equipment 500 has oxidation balls inside the aeration chamber, which are used to enhance the compression resistance of sludge in the aeration chamber and improve the sewage treatment efficiency. In order to prevent the oxidation balls from being broken by the rotating flywheel 101 inside the centrifuge 100 when the water bubble elimination device is working, and in order to protect the flywheel 101 from being damaged due to the large amount of impurities in the sewage, the centrifuge 100 is provided with a protective cover 107, the upper and lower edges of the protective cover 107 are connected to the edges of the top support plate 102 and the bottom support plate 103 respectively, so that the flywheel 101 is wrapped inside the centrifuge 100. In order to make the water droplets generated after the water bubble is broken return to the aeration chamber, the side wall of the protective cover 107 is provided with through holes 108, which can be circular, oval, star-shaped or rhombic, etc. This will not be listed here. In this embodiment, the through holes 108 are circular. In this way, the water droplets generated after the water bubble is broken are thrown to the side wall of the protective cover 107 and return to the aeration chamber through the through holes 108 of the side wall.

[0033] In combination Figure 4 As shown in the figure, the sewage treatment equipment 500 has multiple aeration chambers, and the centrifugal water bubble elimination device can be arranged in any aeration chamber. In this embodiment, the sewage treatment equipment 500 has a first aeration chamber 501 and a second aeration chamber 502, and the centrifugal water bubble elimination device is arranged in the first aeration chamber 501. In order to fix the centrifuge 100 inside the aeration chamber, the centrifuge 100 is provided with a fixing rod 110 at the upper part of the top support plate 102, which can fix the centrifuge 100 at the corresponding position inside the aeration chamber by welding or bolts. In this embodiment, the fixing rod 110 is cylindrical, and the centrifuge 100 is fixed inside the top cover 503 of the first aeration chamber 501, the motor 200 and the gearbox 400 are arranged outside the top cover 503, and the flywheel shaft 109 of the centrifuge 100 is driven to rotate by the gearbox 400 through the opening of the top cover 503.

[0034] From the technical scheme of the utility model, firstly, the motor 200 drives the flywheel 101 to rotate, the air inside the centrifugal machine 100 is reduced, the pressure difference between inside and outside is formed to form the negative pressure at the opening of the collecting cover 300, the water bubble on the liquid surface near the opening of the collecting cover 300 is sucked into the centrifugal machine 100, is broken by the rotating flywheel 101 or is torn by centrifugal force, and the gas-liquid separation is realized, the effect of eliminating water bubble is achieved.Secondly, the gearbox 400 is arranged between the motor 200 and the centrifugal machine 100, the flywheel 101 is driven to rotate by the flywheel shaft 109 of the gearbox 400, so that the rotating speed of the flywheel 101 can be set according to the water bubble condition on the liquid surface in the aeration chamber to achieve better defoaming effect.Thirdly, the centrifugal machine 100 is provided with the protective cover 107, the side wall of the protective cover 107 has the through hole 108, the water drop produced after the water bubble breaks can return to the aeration chamber through the through hole 108 while protecting the flywheel 101.Finally, the defoaming process is realized by the centrifugal and flywheel 101 impact mode, is a kind of pure physical means, does not add any chemical reagent, and cost is low and does not produce environmental pollution.

[0035] The above embodiment of the utility model is described in detail, but the content described can only be the preferred embodiment of the utility model, and cannot be considered to limit the implementation range of the utility model. Any equivalent change and improvement made within the scope of the utility model application should still belong to the patent coverage range of the utility model.

Claims

1. A centrifugal water bubble eliminating device, comprising: a centrifuge, the centrifuge being open at its periphery and having a flywheel and a suction inlet, the suction inlet being directed to the liquid surface in the aeration chamber; a motor, the motor driving the flywheel to rotate; characterized in that, the centrifuge has a top support plate and a bottom support plate, both of which have a central opening and are connected by a support rod, the central opening of the bottom support plate being the suction inlet of the centrifuge.

2. The centrifugal water bubble elimination device according to claim 1, characterized in that: the flywheel is located between the top support plate and the bottom support plate, the flywheel comprising a flywheel shaft and blades, the flywheel shaft passing through the central opening of the top support plate, the blades being fixed on the flywheel shaft.

3. The centrifugal water bubble elimination device according to claim 2, characterized in that: the end of the flywheel shaft is a disc, the disc being located on the underside of the top support plate, the blades being fixed on the lower surface of the disc.

4. The centrifugal water bubble elimination device according to claim 1, characterized by: the suction inlet is connected with a collection cover, the collection cover being open to the liquid surface in the aeration chamber.

5. The centrifugal water bubble elimination device according to claim 1, characterized by: a gearbox is provided between the motor and the centrifuge, the motor driving the flywheel to rotate through the gearbox.

6. The centrifugal water bubble elimination device according to claim 1, characterized by: the centrifuge is provided with a protective cover, the upper and lower edges of the protective cover being connected with the edges of the top support plate and the bottom support plate respectively.

7. The centrifugal water bubble elimination device according to claim 6, characterized in that: the sidewall of the protective cover is provided with through holes, the through holes being circular, elliptical, star-shaped or rhombic in shape.

8. The centrifugal water bubble elimination device according to claim 1, characterized in that the top support plate and the bottom support plate are both circular, the central openings are circular, and the support rod is cylindrical and located at the edges of the top support plate and the bottom support plate.

9. The centrifugal water bubble elimination device according to claim 1, characterized in that: the top of the top support plate is provided with a fixing rod, the fixing rod fixing the centrifuge to the inside of the top cover of the aeration chamber, the motor and the gearbox being provided on the outside of the top cover of the aeration chamber.

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