Novel aeration device for sewage treatment

Abstract

The utility model relates to the technical field of sewage treatment, and particularly discloses a novel aeration device for sewage treatment, which comprises a bell jar with an upper opening and a lower opening and a cylindrical shell structure, an aeration pipe is communicated above a central shaft of the bell jar, and a pushing fan blade capable of generating pushing force downwards is arranged in the bell jar. By utilizing the channel structure of the bell jar and the pushing fan blades, the technical problems that in the prior art, air in an aeration device cannot reach the lower part of the aeration device, so that dead angles exist at the bottom of a sewage treatment container, and aeration is insufficient are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field, concretely is a novel aeration device of sewage treatment. BACKGROUND

[0002] Sewage is the effluent water that loses the original use function in the process of being polluted in life and production, and directly discharging can have certain harm to the environment, cause the water quality of other water bodies to deteriorate, and pollute the soil. Therefore, people will build sewage treatment plants in cities or factory areas, and discharge the sewage after centralized treatment.

[0003] Because the sewage contains a large amount of organic matter, the microorganism needs to consume oxygen to degrade the organic matter, and the sewage needs to be aerated, such as the patent document with the application number CN200920195253.3 discloses an aeration disc, the aeration disc is a disc body composed of an upper cover and a lower cover, the disc body is a cavity, and a plurality of aeration holes are arranged on the surface of the upper cover. In use, the aeration disc is placed at the bottom of the sewage, air is supplied into the cavity of the disc body, and the air is divided into small bubbles when coming out of the aeration holes, and then fully mixes with the sewage. The aeration disc technology can realize the mixing of the sewage and the air, but the aeration disc can only contact the sewage by the kinetic energy of the air itself and the floating process, and the efficiency is low, so there are certain aeration devices with stirring function in the market, such as the patent document with the application number CN202410745596.1 discloses a gas stripping type aeration device, which includes stirring blades, and the oxygen in the air is accelerated to transfer to the water by the stirring of the plurality of stirring blades, so as to improve the aeration effect of the sewage treatment.

[0004] In the above-mentioned technology, the aeration of the sewage can be completed, and the aeration device with the stirring function can also accelerate the transfer of the oxygen to the water, but no matter what kind of aeration device, the air coming out of the aeration device will quickly float upward after entering the sewage due to the action of the buoyancy, so that the sewage below the aeration device cannot contact the air, and there is a dead angle at the bottom of the sewage treatment equipment tank or the bottom of the tank, the bottom is in an anaerobic state, and then the denitrification and phosphorus removal effect of the sewage treatment at the dead angle position is poor. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a novel aeration device for sewage treatment, which solves the technical problem that the air in the aeration device of the prior art cannot reach the lower part of the aeration device, so that there is a dead angle at the bottom of the sewage treatment container, and the aeration is insufficient.

[0006] In order to solve the above problems, the technical scheme adopted by the utility model is as follows: a novel aeration device for sewage treatment, including the bell jar of the upper and lower opening, cylindrical shell structure, the aeration pipe is connected on the upper of the bell jar central axis, the bell jar is equipped with the push fan blade that can produce the push power downward.

[0007] The beneficial effects of the embodiment are:

[0008] 1、In the prior art, when air is aerated in sewage, the bubbles formed will quickly float upward due to buoyancy, so the mixing effect of the sewage at the bottom of the sewage tank is not good, and the bell jar is designed in the present application, and the push fan blade is designed in the bell jar, so that when aeration, the gas enters the bell jar, and small bubbles are formed under the dispersion of the push fan blade, and the push fan blade pushes the small bubbles downward and mixes with the air below the aeration device, so there is no dead angle area, and the mixing is more sufficient.

[0009] 2、In the prior art, in order to increase the aeration effect, the air is also pressurized, so that the kinetic energy of the air increases, so that it can cover a larger area after entering the water, but this direct air pressurization method is blocked by the resistance of the water after entering the water, and the effect is not good, and the energy consumption is large, but the bell jar of the present application is designed as a cylindrical channel with upper and lower openings, so that the water flow can flow downward through the inside of the bell jar from the top of the bell jar, when the push fan blade is started, the water body will flow from top to bottom in the bell jar, and the air entering the sewage will be driven to each position of the sewage tank during the flow process, compared with the direct pressurization of the air in the prior art, the efficiency of this air bubble driving method using water flow is higher, and the mixing effect is better.

[0010] Further, the bell jar is provided with an aeration pipe mounting disc above the bell jar, the middle part of the aeration pipe mounting disc is hollow, but provided with a cross support member, and the cross intersection of the cross support member is provided with an aeration passage, the upper end surface of the aeration passage is provided with an aeration threaded hole, the lower end of the aeration pipe is provided with a connecting disc, and the connecting disc is provided with a bolt matched with the aeration threaded hole.

[0011] Further, the aeration passage is fixedly connected with a cross bearing, the push fan blade is provided with a rotating shaft, and the upper end of the rotating shaft is rotatably connected with the cross bearing.

[0012] Further, the lower end of the rotating shaft is connected with a conical table. The conical table can guide the water body with bubbles pushed by the push fan blade to the dead angle position of the container, so that the aeration is more uniform.

[0013] Further, the push fan blade is connected with a rotary motor through the rotating shaft, and the rotary motor is arranged in the conical table. The space is more compact, so that the structure of the aeration device is small as a whole.

[0014] Further, the cross-shaped supporting member comprises a connecting head which is attached to the aeration pipe mounting disc. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 Structure diagram of the utility model,

[0016] Fig. 2 Structure diagram of the utility model after removing the bell jar,

[0017] Fig. 3 Structure diagram of the aeration pipe mounting disc of the utility model. DETAILED DESCRIPTION

[0018] The following will be further explained in detail through specific embodiments:

[0019] The reference signs in the drawings of the specification include: bell jar 1, aeration pipe mounting disc 11, cross-shaped supporting member 111, aeration passage 112, aeration threaded hole 1121, cross-shaped bearing 113, pushing fan blade 12, rotating shaft 121, aeration pipe 2, connecting disc 21, conical table 3.

[0020] Embodiments as shown in the drawings Figs. 1-3 A novel aeration device for sewage treatment, comprising a bell jar 1 with an upper and lower opening and a cylindrical shell structure, the bell jar 1 is a passage structure with an upper and lower opening, an aeration pipe mounting disc 11 is welded on the upper end of the bell jar 1, the cross section of the aeration pipe mounting disc 11 is a circular ring structure, so the middle part of the aeration pipe mounting disc 11 is hollow, a cross-shaped supporting member 111 is welded on the inner side wall of the aeration pipe mounting disc 11, in order to ensure stable welding, the cross-shaped supporting member 111 comprises a rod part and a connecting head part, which are an integral structure, the cross-shaped supporting member 111 is connected with the aeration pipe mounting disc 11 by the connecting head, the width of the connecting head is greater than that of the rod of the cross-shaped supporting member 111, and in order to attach to the inner wall of the aeration pipe mounting disc 11, the outer contour of the connecting head is arc-shaped, and the arc is consistent with the inner side of the aeration pipe mounting disc 11.

[0021] The cross-shaped intersection of the cross-shaped supporting member 111 is provided with an aeration passage 112, the outer contour of the aeration passage 112 is cylindrical, and the middle part is a through hole structure, so that air can pass through the aeration passage 112 and enter the inside of the bell jar 1, and an aeration threaded hole 1121 is arranged on the upper end surface of the aeration passage 112.

[0022] The bell jar 1 is provided with an aeration pipe 2 at the top, the aeration pipe 2 is a stainless steel pipe, a connecting disc 21 with a larger diameter than the aeration pipe 2 is welded at the lower end of the aeration pipe 2, the cross section of the connecting disc 21 is a circular ring, the inner diameter is consistent with the aeration pipe 2, the connecting disc 21 is also provided with an aeration threaded hole 1121, so that the connecting disc 21 can be attached to the upper end surface of the aeration channel 112, and the aeration threaded holes 1121 on the two are aligned, and the bolt is used to fixedly connect them, and then the aeration pipe 2 and the bell jar 1 are fixedly connected.

[0023] A pushing fan blade 12 capable of generating a downward pushing force is arranged in the inner cavity of the bell jar 1, the pushing fan blade 12 comprises a rotating shaft 121 and a fan blade, the rotating shaft 121 is coincident with the central shaft of the bell jar 1, and a cross bearing 113 is arranged at the upper end of the rotating shaft 121. Fig. 3 As shown in the figure, the cross bearing 113 comprises a common bearing and a support rod welded on the outer periphery of the bearing, one end of the support rod is welded with the outer periphery of the common bearing, and the other end is welded with the inner side of the aeration channel 112. Therefore, the cross bearing 113 is fixed in the aeration channel 112, but the rotating shaft 121 can rotate relative to the bell jar 1, and the pushing fan blade 12 is keyed connected with the rotating shaft 121, so that the pushing fan blade 12 can rotate with the rotating shaft 121.

[0024] The upper end of the rotating shaft 121 is fixedly connected with the aeration channel 112, and the lower end is rotatably connected with a conical table 3, the conical table 3 is a conical shell formed by sheet metal, a rotating motor for driving the pushing fan blade 12 to rotate is arranged in the inside, and the output shaft of the rotating motor is connected with the rotating shaft through a shaft coupling by penetrating the upper end surface of the conical table 3. And the place where the conical table 3 is penetrated by the output shaft of the rotating motor is rotatably sealed by a sealing bearing, so as to ensure that no water can leak into the inside of the conical table.

[0025] The above is only an embodiment of the present application, and the specific structure and characteristics of the scheme are not described in detail. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, which will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A novel aeration device for wastewater treatment, comprising a bell-shaped shell with openings at the top and bottom, and an aeration pipe connected above the central axis of the bell-shaped shell, characterized in that: The bell jar is equipped with a pusher fan blade that can generate downward thrust.

2. The novel aeration device for wastewater treatment according to claim 1, characterized in that: Above the bell jar is an aeration pipe mounting plate with a hollow center but a cross support component. An aeration channel is provided at the intersection of the cross support component and an aeration threaded hole is provided on the upper end face of the aeration channel. Below the aeration pipe is a connecting plate with bolts that mate with the aeration threaded hole.

3. The novel aeration device for wastewater treatment according to claim 2, characterized in that: A cross bearing is fixedly connected inside the aeration channel, and a rotating shaft is provided on the pushing fan blade. The upper end of the rotating shaft is rotatably connected to the cross bearing.

4. The novel aeration device for wastewater treatment according to claim 3, characterized in that: A conical platform is connected to the lower end of the rotating shaft.

5. The novel aeration device for wastewater treatment according to claim 4, characterized in that: The driving fan blades are connected to a rotary motor via a rotating shaft, and the rotary motor is located inside the conical platform.

6. The novel aeration device for wastewater treatment according to claim 5, characterized in that: The cross-shaped support component includes a connector that fits into the aeration pipe mounting plate.

Images