Sewage biochemical treatment equipment

Abstract

The utility model belongs to the technical field of sewage treatment, and particularly relates to sewage biochemical treatment equipment which comprises a tank body, a transmission mechanism and a control panel, and a mixing mechanism is arranged in the tank body; the mixing mechanism comprises a main shaft, stirring blades and a plurality of aeration assemblies, the main shaft is rotationally arranged in the tank body and is in transmission connection with the transmission mechanism, the stirring blades and the aeration assemblies are uniformly arranged on the main shaft from top to bottom, and an air supply channel is formed in the middle of the main shaft; the aeration assembly comprises a gas conveying pipe, a floater and a spray head, through the arrangement of the mixing mechanism, sewage can be synchronously mixed through the stirring blades and the aeration assembly, the mixing degree of the sewage and reaction liquid is improved, the bubble spraying direction of aeration can be changed in real time while stirring is conducted, and the aeration coverage is enlarged; and the aeration assembly can be automatically opened and closed according to the height of the liquid level, so that the problem of low gas utilization rate caused by purely vertical arrangement of a gas injection device is avoided while aeration treatment can be performed at each liquid level height.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and specifically relates to sewage biochemical treatment equipment. Background Art

[0002] With the development of industrialization and people's deepening awareness of environmental protection, sewage discharge is usually treated accordingly. Among them, biochemical treatment of sewage refers to the use of microorganisms to treat sewage.

[0003] At present, general sewage biochemical treatment equipment, in addition to mixing biochemical liquid with sewage for reaction, will also be equipped with corresponding stirring and aeration mechanisms to treat sewage. However, most general equipment only has aeration nozzles at the bottom of the sewage pool. When faced with a deeper sewage liquid level, it is easy to have problems such as reduced aeration efficiency and increased sewage treatment time, which leads to reduced equipment life. The method of setting a single nozzle at the height of the entire sewage pool has the problems of incomplete aeration coverage and low gas utilization rate, which is difficult to cooperate with the actual treatment liquid level height, and does not meet the needs of sewage treatment. Utility Model Content

[0004] The purpose of the utility model is to provide a sewage biochemical treatment device for solving the problems mentioned in the background technology.

[0005] In order to achieve the above technical purpose, the technical solution adopted by the utility model is as follows:

[0006] A sewage biochemical treatment device comprises a tank body, a transmission mechanism and a control panel, wherein the transmission mechanism is arranged on the upper side of the tank body, a sewage inlet and an auxiliary material inlet are arranged on the side of the tank body, a discharge port is arranged at the lower end of the tank body, and a mixing mechanism is arranged in the tank body;

[0007] The mixing mechanism comprises a main shaft, a stirring blade and a plurality of aeration components. The main shaft is rotatably arranged in the tank body and is in transmission connection with the transmission mechanism. The plurality of stirring blades and aeration components are evenly arranged on the main shaft from top to bottom. An air supply channel is opened in the middle of the main shaft. The air supply channel is connected to the external air supply mechanism, and the air supply channel is connected to the plurality of aeration components.

[0008] The aeration assembly comprises an air pipe, a floater and a nozzle. The air pipe is connected to the main shaft and communicated with the air supply channel. The floater is arranged in the middle of the air pipe. The nozzle is connected to the other end of the air pipe.

[0009] The floater comprises a shell and a floating pin. The shell is vertically connected to the gas pipe. The shell is provided with a step cavity with a smaller opening facing upwards. The floating pin is slidingly sealed in the step cavity.

[0010] The floating pin includes a floating plate, a connecting rod, an on-off head and a spring. The on-off head sliding seal is arranged in the step cavity. The connecting rod is connected to the on-off head and the sliding seal extends upwardly out of the step cavity. The floating plate is connected to the other end of the connecting rod. The spring is sleeved on the connecting rod and located in the step cavity.

[0011] The side of the on-off head is provided with an annular groove matching the gas delivery pipe.

[0012] A one-way exhaust valve and a one-way air intake valve are also provided on the upper side of the step cavity corresponding to the connecting rod section, and the one-way air intake valve is connected to the outside through a hose.

[0013] The transmission mechanism includes a motor, a driving wheel, a belt and a driven wheel. The driven wheel is concentrically connected to the main shaft located at the outer section of the tank body and the air supply passage is not closed. The motor is arranged at the upper end of the tank body through a bracket, the driving wheel is connected to the output shaft of the motor, and the belt is arranged between the driving wheel and the driven wheel.

[0014] Compared with the prior art, the utility model has at least the following advantages:

[0015] By setting up the mixing mechanism, the sewage can be mixed and treated synchronously through the stirring blades and the aeration component to improve the mixing degree of the sewage and the reaction liquid. During stirring, the spray direction of the aeration bubbles can be changed in real time to increase the aeration coverage. The aeration component can also be automatically opened and closed according to the liquid level. While ensuring that each liquid level can be aerated, the problem of low gas utilization rate caused by simply setting up the jet device vertically is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings.

[0017] Figure 1 The utility model is a schematic diagram of the structure of a sewage biochemical treatment device.

[0018] Figure 2 It is a structural sectional view of the utility model.

[0019] Figure 3 for Figure 2 A magnified schematic diagram of center A.

[0020] Figure 4 It is a structural schematic diagram of the mixing mechanism of the utility model.

[0021] Tank body 1, discharge port 11, main shaft 2, stirring blade 21, air supply channel 22, air delivery pipe 3, shell 4, step cavity 41, floating plate 5, connecting rod 51, on-off head 52, spring 53, annular groove 54, motor 6, driving wheel 61, belt 62, driven wheel 63. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Example 1: Figure 1-4 As shown, a sewage biochemical treatment device includes a tank body 1, a transmission mechanism and a control panel. The transmission mechanism is arranged on the upper side of the tank body 1. The side of the tank body 1 is provided with a sewage inlet and an auxiliary material inlet. The lower end of the tank body 1 is provided with a discharge port 11. The characteristics are: a mixing mechanism is arranged in the tank body 1;

[0024] The mixing mechanism includes a main shaft 2, a stirring blade 21 and a plurality of aeration components. The main shaft 2 is rotatably arranged in the tank body 1 and is transmission-connected to the transmission mechanism. The plurality of stirring blades 21 and the aeration components are evenly arranged on the main shaft 2 from top to bottom. An air supply channel 22 is opened in the middle of the main shaft 2. The air supply channel 22 is connected to the external air supply mechanism, and the air supply channel 22 is connected to the plurality of aeration components.

[0025] The aeration assembly includes an air pipe 3 , a floater and a nozzle. The air pipe 3 is connected to the main shaft 2 and communicated with the air supply channel 22 . The floater is arranged in the middle of the air pipe 3 , and the nozzle is connected to the other end of the air pipe 3 .

[0026] When the sewage is biochemically treated, the sewage and the biochemical liquid are respectively poured into the tank body 1 through the sewage inlet and the auxiliary material inlet for preparation. When the liquid injection is completed, the transmission mechanism can be turned on through the control panel to drive the main shaft 2. Since the main shaft 2 is provided with an air supply channel 22 in the middle and is connected with a plurality of aeration components, the external air supply mechanism also synchronously supplies the gas for aeration and makes the gas gush out from the liquid. In this way, through the rotation of the main shaft 2, on the one hand, the sewage and the biochemical liquid are mixed and stirred by the stirring blades 21, and on the other hand, the position and orientation of the aeration component in the sewage can be changed in real time to improve the stirring and aeration effects;

[0027] In order to further ensure the full utilization rate of the aeration gas and avoid the problem that the bubbles will float up to become large bubbles due to the single setting of the aeration element at the bottom of the pool, which will reduce the aeration effect of the upper sewage, the float will cut off the connection between the air pipe 3 and the nozzle in the initial state. In the process of the sewage gradually entering the tank body 1, the liquid will generate an upward buoyancy on the float, so that the float rises with the liquid level until the float connects the air path between the air pipe 3 and the air supply channel 22. In this way, the opening and closing of the air path can be automatically controlled by the liquid level, ensuring the full utilization of the gas and avoiding waste, and ensuring that liquids at different depths can be effectively aerated, avoiding the problem that the dissolved oxygen efficiency is reduced due to the simple setting at the bottom of the liquid, which leads to a reduction in the overall treatment efficiency and a reduction in the service life of the equipment due to a long operating time. In order to ensure the safety of the equipment, a pressure relief port is also provided at the upper end of the tank body.

[0028] The floater comprises a shell 4 and a floating pin. The shell 4 is vertically connected to the gas pipe 3 . The shell 4 is provided with a stepped cavity 41 with a smaller opening facing upward. The floating pin is slidably sealed in the stepped cavity 41 .

[0029] The floating pin includes a floating plate 5, a connecting rod 51, an on-off head 52 and a spring 53. The on-off head 52 is slidingly sealed in the step cavity 41. The connecting rod 51 is connected to the on-off head 52 and slidingly seals and extends upward from the step cavity 41. The floating plate 5 is connected to the other end of the connecting rod 51. The spring 53 is sleeved on the connecting rod 51 and is located in the step cavity 41.

[0030] An annular groove 54 matching the gas delivery pipe 3 is formed on the side of the on-off head 52 .

[0031] In the initial state, the spring 53 pushes the on-off head 52 downward to keep the annular groove 54 on the on-off head 52 offset from the gas pipe 3 to cut off the gas path. When the water level of the solution in the tank body 1 gradually rises, the float plate 5 is pushed upward by the buoyancy and pulls the on-off head 52 upward through the connecting rod 51 until the annular groove 54 corresponds to the gas pipe 3. At this time, the gas in the air supply channel 22 of the main shaft 2 is input into the gas pipe 3 and finally sprayed out through the nozzle, which is a one-way nozzle. This can ensure that sewage will not flow back into the gas pipe 3.

[0032] The transmission mechanism includes a motor 6, a driving wheel 61, a belt 62 and a driven wheel 63. The driven wheel 63 is concentrically connected to the main shaft 2 located at the outer section of the tank body 1 and does not close the air supply duct 22. The motor 6 is arranged at the upper end of the tank body 1 through a bracket, the driving wheel 61 is connected to the output shaft of the motor 6, and the belt 62 is arranged between the driving wheel 61 and the driven wheel 63.

[0033] When mixing and stirring, the motor 6 starts to drive the driving wheel 61 to rotate, and the driving wheel 61 transmits power to the driven wheel 63 through the belt 62. At this time, the driven wheel 63 drives the main shaft 2 to rotate to perform mixing and adjust the position of the nozzle.

[0034] Embodiment 2: A one-way exhaust valve and a one-way air intake valve are also provided on the upper side of the step cavity 41 corresponding to the connecting rod 51 , and the one-way air intake valve is connected to the outside through a hose.

[0035] In order to ensure the smooth operation of the components in the step cavity 41, when the on-off head 52 moves upward, the air in the step cavity 41 will be discharged into the tank body 1 through the one-way exhaust valve, and when the on-off head 52 descends and resets, the external air is input through the hose and the one-way air inlet valve, which can ensure the smooth and stable up and down movement of the components.

[0036] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A sewage biochemical treatment device, comprising a tank body, a transmission mechanism and a control panel, wherein the transmission mechanism is arranged on the upper side of the tank body, a sewage inlet and an auxiliary material inlet are arranged on the side of the tank body, and a discharge port is arranged at the lower end of the tank body, characterized in that: A mixing mechanism is provided in the tank; The mixing mechanism comprises a main shaft, a stirring blade and a plurality of aeration components. The main shaft is rotatably arranged in the tank body and is in transmission connection with the transmission mechanism. The plurality of stirring blades and aeration components are evenly arranged on the main shaft from top to bottom. An air supply channel is opened in the middle of the main shaft. The air supply channel is connected to the external air supply mechanism, and the air supply channel is connected to the plurality of aeration components. The aeration assembly comprises an air pipe, a floater and a nozzle. The air pipe is connected to the main shaft and communicated with the air supply channel. The floater is arranged in the middle of the air pipe. The nozzle is connected to the other end of the air pipe.

2. A sewage biochemical treatment equipment according to claim 1, characterized in that: The floater comprises a shell and a floating pin. The shell is vertically connected to the gas pipe. The shell is provided with a step cavity with a smaller opening facing upwards. The floating pin is slidingly sealed in the step cavity.

3. A sewage biochemical treatment equipment according to claim 2, characterized in that: The floating pin includes a floating plate, a connecting rod, an on-off head and a spring. The on-off head sliding seal is arranged in the step cavity. The connecting rod is connected to the on-off head and the sliding seal extends upwardly out of the step cavity. The floating plate is connected to the other end of the connecting rod. The spring is sleeved on the connecting rod and located in the step cavity.

4. A sewage biochemical treatment equipment according to claim 3, characterized in that: The side of the on-off head is provided with an annular groove matching the gas delivery pipe.

5. A sewage biochemical treatment device according to claim 4, characterized in that: A one-way exhaust valve and a one-way air intake valve are also provided on the upper side of the step cavity corresponding to the connecting rod section, and the one-way air intake valve is connected to the outside through a hose.

6. A sewage biochemical treatment equipment according to claim 5, characterized in that: The transmission mechanism includes a motor, a driving wheel, a belt and a driven wheel. The driven wheel is concentrically connected to the main shaft located at the outer section of the tank body and the air supply passage is not closed. The motor is arranged at the upper end of the tank body through a bracket, the driving wheel is connected to the output shaft of the motor, and the belt is arranged between the driving wheel and the driven wheel.

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