Automatic sewage tank stirring device

Abstract

The present application relates to the technical field of sewage treatment, and discloses an automatic stirring device for sewage pool, which comprises a flow guide pipe, a first cylinder and a second cylinder, fluid flows in the flow guide pipe, a rotating body is arranged in the first cylinder, a stirrer is arranged in the second cylinder, the outlet end of the flow guide pipe extends into the first cylinder, one end of the rotating body is rotatably arranged in the first cylinder, the other end extends into the second cylinder and is detachably fixedly connected with the stirrer, the outlet end of the flow guide pipe is provided with a necking portion, a plurality of pressure bearing pieces are arranged on the outer side wall of the rotating body and along the circumferential direction thereof, and the fluid sprayed through the necking portion is sprayed to at least part of the pressure bearing pieces. The outlet end of the flow guide pipe is provided with the necking portion to realize secondary pressurization of the fluid, the pressurized fluid has high pressure, can generate great driving force on the pressure bearing pieces of the rotating body, accelerate the rotating speed of the rotating body, and thus accelerate the stirring speed of the stirrer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment, in particular to an automatic sewage tank stirring device. BACKGROUND

[0002] In the sewage treatment process, the raw water in the anaerobic tank is usually fully mixed with the returned activated sludge. The more uniform the mixture, the higher the anaerobic reaction efficiency of the sewage, and the better the water treatment effect.

[0003] Usually, a sewage stirring device is arranged at the bottom of the anaerobic tank to stir the water at the bottom to prevent the deposition of sludge. The existing sewage stirring device usually comprises a flow guide pipe, a rotating cylinder and a stirrer. The flow guide pipe sprays the guided fluid to the rotating cylinder, thereby driving the rotating cylinder to rotate, and thereby driving the stirrer to stir in the sewage tank.

[0004] However, the fluid pressure sprayed by the flow guide pipe to the rotating cylinder is small. The fluid pressure sprayed through the flow guide pipe is small. The small flow of fluid cannot exert sufficient pressure on the rotating cylinder. It is necessary to increase the flow of fluid to generate sufficient pressure on the rotating cylinder to make the rotating cylinder rotate effectively. SUMMARY

[0005] The purpose of the present application is to provide an automatic sewage tank stirring device to solve the problem of insufficient fluid pressure sprayed by the flow guide pipe to the rotating cylinder in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present application provides an automatic sewage tank stirring device, comprising a flow guide pipe, a first cylinder and a second cylinder. The flow guide pipe has fluid flowing inside. The first cylinder has a rotating body inside. The second cylinder has a stirrer inside. The outlet end of the flow guide pipe extends into the inside of the first cylinder. One end of the rotating body is rotatably arranged in the inside of the first cylinder, and the other end extends into the second cylinder and is detachably fixedly connected with the stirrer. The outlet end of the flow guide pipe is provided with a necking. A plurality of pressure receiving pieces are arranged on the outer side wall of the rotating body along the circumferential direction thereof. The fluid sprayed through the necking is sprayed to at least part of the pressure receiving pieces.

[0007] The above-mentioned automatic sewage tank stirring device, wherein each of the pressure receiving pieces has an inner concave surface, and the fluid sprayed through the necking is sprayed to the inner concave surface of at least part of the pressure receiving pieces.

[0008] The automatic sewage tank stirring device, wherein the first cylinder comprises a first column and a first circular truncated cone, one end of the first column is fixedly connected with the second cylinder, the other end of the first column is fixedly connected with one end of the first circular truncated cone, the inner diameter of the first circular truncated cone linearly decreases along the direction away from the middle position of the first column, the outlet end of the drainage pipe extends into the interior of the first column, and one end of the rotating body is rotatably arranged in the interior of the first circular truncated cone.

[0009] The automatic sewage tank stirring device, wherein the first circular truncated cone is provided with a plurality of water outlets away from one end of the first column.

[0010] The automatic sewage tank stirring device, wherein the second cylinder comprises a second column and a second circular truncated cone, one end of the second column is fixedly connected with one end of the first column, the other end of the second column is fixedly connected with one end of the second circular truncated cone, the other end of the second circular truncated cone is provided as an opening, the inner diameter of the second circular truncated cone linearly increases along the direction away from the middle position of the second column, the stirrer is rotatably arranged in the interior of the second column, the other end of the rotating body extends into the interior of the second column, and is detachably fixedly connected with the stirrer.

[0011] The automatic sewage tank stirring device, wherein the axis of the first column coincides with the axis of the second column, the axis of the first column coincides with the axis of the first circular truncated cone, and the axis of the second column coincides with the axis of the second circular truncated cone.

[0012] The automatic sewage tank stirring device, wherein the inner diameter of the first column is equal to the inner diameter of the second column, the inner diameter of the first column is equal to the maximum inner diameter of the first circular truncated cone, and the inner diameter of the second column is equal to the minimum inner diameter of the second circular truncated cone.

[0013] The automatic sewage tank stirring device, wherein the drainage pipe is provided with a valve body, the valve body is provided with a valve body controller, the interior of the first circular truncated cone is provided with a floating ball sensor, and the floating ball sensor is signal connected with the valve body controller.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] The outlet end of the drainage pipe is provided with a necking to realize secondary pressurization of the fluid, the pressurized fluid has a high pressure, can generate a greater driving force on the pressure-bearing piece of the rotating body, accelerate the rotating speed of the rotating body, and accelerate the stirring rate of the stirrer. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1It is an overall schematic diagram of the automatic stirring device for sewage pool of the present invention;

[0017] Figure 2 This is a schematic structural diagram of the agitator of the automatic agitating device for a sewage pool according to the present invention;

[0018] Figure 3 This is a schematic structural diagram of the first cylinder and the second cylinder of the automatic stirring device for a sewage pool of the present invention.

[0019] In the figure: 1. Drainage tube; 11. Narrow mouth; 2. First cylinder; 21. First column; 22. First conical body; 3. Second cylinder; 31. Second column; 32. Second conical body; 4. Rotating body; 41. Pressure plate; 5. Agitator; 51. Rotating shaft; 52. Blade; 6. Float sensor; 7. Valve body; 8. Booster pump; 9. Filter; A direction represents the flow direction of the fluid. DETAILED DESCRIPTION

[0020] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0021] like Figure 1 As shown, the automatic stirring device for a sewage pool of the present invention comprises: a drainage pipe 1, a first cylinder 2 and a second cylinder 3, a pressurized fluid (liquid or gas) circulates inside the drainage pipe 1, a necking 11 with an inner diameter smaller than that of the drainage pipe 1 is provided at the outlet end, a rotating body 4 is provided inside the first cylinder 2, the overall shape of the rotating body 4 is cylindrical, one end of the rotating body 4 is rotatably provided inside the first cylinder 2, a rotatable agitator 5 is provided inside the second cylinder 3, the other end of the rotating body 4 extends into the interior of the second cylinder 3 and is plugged into the agitator 5, a plurality of pressure-bearing plates 41 are provided on the outer side wall of the rotating body 4 and at equal intervals along its circumferential direction, the outlet end of the drainage pipe 1 extends into the interior of the first cylinder 2, and when the pressurized fluid passes through the necking 11, the necking 11 is rapidly The fluid ejected from the constriction 11 has a greater pressure, thereby realizing secondary pressurization of the fluid. The fluid after secondary pressurization is sprayed toward part or all of the pressure-bearing plates 41 of the rotor 4, thereby driving the rotor 4 to rotate in the direction of the fluid flow rate, thereby driving the agitator 5 inside the second cylinder 3 to rotate through the rotor 4. Since the second cylinder 3 is arranged in a sewage tank (not shown in the figure), the activated sludge and raw water in the sewage tank are fully integrated through the agitator 5 to form a vortex flow and fully stir the mixed liquid in the sewage tank, thereby avoiding sludge deposition in the sewage tank, increasing the mass transfer effect of sludge and wastewater, and making the mixed liquid more evenly mixed. This continuous vortex flow state keeps the activated granular sludge in an active state, effectively utilizes the biomass in the anaerobic tank, and accelerates the decomposition of organic matter in the sewage tank.

[0022] Further, as a preferred embodiment, the automatic sewage tank stirring device further comprises a pressure boosting device, the pressure boosting device comprises a pressure boosting pump 8 and a filter 9, the outlet of the pressure boosting pump 8 is sealingly connected to the inlet of the filter 9 through a flange, and the outlet of the filter 9 is sealingly connected to the inlet of the flow guide pipe 1 through a flange. The fluid flows into the inlet of the pressure boosting pump 8 at a low pressure, the pressure boosting pump 8 pressurizes the fluid and inputs the fluid into the flow guide pipe 1 after filtering by the filter 9, thereby realizing the first pressurization of the fluid. The fluid is secondarily pressurized after passing through the neck 11 of the flow guide pipe 1. The fluid is pressurized multiple times, thereby increasing the pressure of the fluid on the pressure bearing piece 41 of the rotating body 4, accelerating the rotation speed of the rotating body 4, and accelerating the stirring speed of the stirrer 5. In addition, the pressurized fluid has a large pressure, and a small flow of fluid can make the rotating body 4 rotate quickly, thereby driving the stirrer 5 to stir, thereby saving the flow of fluid to a certain extent.

[0023] Considering that the fluid can be a gas (such as compressed air, etc.) or a liquid (such as water, etc.), the pressure boosting pump 8 can be adaptively selected, that is, when the fluid is a gas, the pressure boosting pump 8 is preferably a vacuum pump, and when the fluid is a liquid, the pressure boosting pump 8 is preferably a hydraulic pump.

[0024] Further, as a preferred embodiment, each pressure bearing piece 41 has an inner concave surface, and the inner concave surface of at least part of the pressure bearing pieces 41 faces the neck 11 of the flow guide pipe 1 when the rotating body 4 rotates, so that the fluid sprayed through the neck 11 is sprayed to the inner concave surface of at least part of the pressure bearing pieces 41, thereby increasing the impact force of the fluid on the pressure bearing pieces 41, accelerating the rotation of the rotating body 4, and thereby accelerating the stirring rate of the stirrer 5.

[0025] Further, as a preferred embodiment, as shown in FIG. 2, the flow guide pipe 1 comprises a plurality of flow guide pipes 1, and the plurality of flow guide pipes 1 are arranged in the form of a ring around the rotating body 4. Figure 3As shown, the first cylinder 2 comprises: a first column 21 and a first circular truncated cone 22, one end of the first column 21 is fixedly connected with the second cylinder 3, the other end of the first column 21 is opposite to one end of the first circular truncated cone 22 and is welded together, and the inner diameter of the first circular truncated cone 22 linearly decreases along the direction away from the middle position of the first column 21 (i.e. the middle part of the height of the first column 21), the outlet end of the flow guide pipe 1 extends into the interior of the first column 21, one end of the rotating body 4 is rotatably arranged in the interior of the first circular truncated cone 22, and the one end of the rotating body 4 is detachably fixedly connected with the stirrer 5, the rotating body 4 is rotated to drive the stirrer 5 to rotate, so that the stirrer 5 can stir in the sewage pool, when the fluid is sprayed into the first column 21 through the flow guide pipe 1, due to the linearly decreasing inner diameter of the first circular truncated cone 22, the fluid does centrifugal motion in the first column 21 along the rotating body 4, and under the action of gravity, the fluid flows from the first column 21 into the first circular truncated cone 22, so that the fluid does downward spiral motion along the inner walls of the first column 21 and the first circular truncated cone 22, when the fluid moves to the bottom end of the first circular truncated cone 22, the fluid is thrown out through the water outlet holes of the first circular truncated cone 22.

[0026] Further, as a preferred embodiment, the second cylinder 3 comprises: a second column 31 and a second circular truncated cone 32, one end of the second column 31 is opposite to one end of the first column 21 and is welded together, the other end of the second column 31 is opposite to one end of the second circular truncated cone 32 and is welded together, the inner diameter of the second circular truncated cone 32 linearly increases along the direction away from the middle position of the second column 31 (i.e. the middle part of the height of the second column 31), and the other end of the second circular truncated cone 32 is open, due to the shape of the second circular truncated cone 32 being large at one end and small at the other end, when the stirrer 5 stirs in the second column 31, more mixed liquid in the sewage pool can be driven to participate in rotation, so that the stirring efficiency is improved.

[0027] Further, as a preferred embodiment, the axis of the first column 21 coincides with the axis of the second column 31, the axis of the first column 21 coincides with the axis of the first circular truncated cone 22, and the axis of the second column 31 coincides with the axis of the second circular truncated cone 32.

[0028] Further, as a preferred embodiment, the inner diameter of the first cylinder 21 is equal to the inner diameter of the second cylinder 31, the inner diameter of the first cylinder 21 is equal to the maximum inner diameter of the first circular truncated cone 22, and the inner diameter of the second cylinder 31 is equal to the minimum inner diameter of the second circular truncated cone 32. If the first cylinder 21 and the first circular truncated cone 22 are not directly connected, and the inner diameter of the first cylinder 21 is not equal to the inner diameter of the first circular truncated cone 22, the connecting part of the first cylinder 21 and the first circular truncated cone 22 will be misaligned, so that the fluid flowing downward in the first cylinder 21 cannot smoothly flow into the first circular truncated cone 22, which may cause the rotating fluid to rotate in the opposite direction, affecting the rotation of the rotating body 4.

[0029] Further, as a preferred embodiment, the rotating body 4 is fixedly connected to the first circular truncated cone 22 and the first cylinder 21 through a shaft sleeve, and a sealing ring is arranged at the connection between the other end of the rotating body 4 and the stirrer 5, to realize the sealed connection between the two.

[0030] Further, as a preferred embodiment, as shown in Figure 2 the stirrer 5 comprises a rotating shaft 51 and a plurality of blades 52, the rotating shaft 51 is sealingly connected to the other end of the first cylinder 21, and the plurality of blades 52 are inserted into the circumferential side of the rotating shaft 51 at equal intervals along the circumferential direction of the rotating shaft 51.

[0031] The working process of the present application is as follows: the fluid is pressurized once by the booster pump 8, filtered by the filter 9, enters the drainage pipe 1, and is sprayed into the first cylinder 21 from the outlet end of the drainage pipe 1. Since the outlet end of the drainage pipe 1 has a neck 11, the fluid sprayed into the first cylinder 21 has a higher pressure, realizing secondary pressurization of the fluid. The fluid sprayed on the plurality of pressure-bearing pieces 41 of the rotating body 4 drives the rotation of the rotating body 4, and the rotating body 4 drives the rotation of the stirrer 5 inserted together with it, thereby realizing the stirring of the mixed liquid in the sewage tank. Under the action of centrifugal force and gravity, the fluid sprayed on the plurality of pressure-bearing pieces 41 moves downward along the inner walls of the first cylinder 21 and the first circular truncated cone 22 in a spiral motion, until it moves to the bottom end of the first circular truncated cone 22 and is thrown out through the plurality of water outlets at the bottom end of the first circular truncated cone 22.

[0032] In summary, the application realizes the first pressurization of the fluid by the booster pump 8, the outlet end of the drainage pipe 1 is provided with the necking 11 to realize the second pressurization of the fluid, the fluid with twice pressurization has higher pressure, can generate greater driving force to the several pressure-bearing pieces 41 of the rotating body 4, speeds up the rotating speed of the rotating body 4, thereby speeds up the stirring rate of the stirrer 5, in addition, the inner diameter of the first circular cone body 22 of the first cylinder body 2 changes linearly, so that the fluid sprayed on the several pressure-bearing pieces 41 of the rotating body 4 rotates downward along the inner wall of the first cylinder body 2, can be quickly discharged from the first cylinder body 2, does not affect the rotation of the rotating body 4, furthermore, the inner diameter of the second circular cone body 32 of the second cylinder body 3 changes linearly, so that the second circular cone body 32 can accommodate more mixed liquid, when the stirrer 5 stirs, can drive more mixed liquid to stir, speeds up the stirring efficiency.

[0033] The above only describes the preferred embodiments of the application, and it should be noted that those skilled in the art can make some improvements and replacements without departing from the technical principles of the application, and these improvements and replacements should also be considered as the protection scope of the application.

Claims

1. An automatic sewage tank mixing device comprising: The drain pipe, the first cylinder and the second cylinder, the inside of the drain pipe flows with fluid, the inside of the first cylinder is provided with a rotating body, the inside of the second cylinder is provided with a stirrer, the outlet end of the drain pipe extends into the inside of the first cylinder, one end of the rotating body is rotatably arranged in the inside of the first cylinder, the other end extends into the second cylinder and is detachably fixedly connected with the stirrer, characterized in that the outlet end of the drain pipe is provided with a necking, a plurality of pressure receiving pieces are arranged on the outer side wall of the rotating body and along the circumferential direction thereof, and the fluid sprayed through the necking is sprayed to at least part of the pressure receiving pieces. The first cylinder comprises a first column and a first circular truncated cone body, one end of the first column is fixedly connected with the second cylinder, the other end of the first column is fixedly connected with one end of the first circular truncated cone body, and the inner diameter of the first circular truncated cone body linearly decreases away from the middle position of the first column, the outlet end of the drain pipe extends into the inside of the first column, and one end of the rotating body is rotatably arranged in the inside of the first circular truncated cone body. The circular truncated cone body away from the one end of the first column is provided with a plurality of water outlets. The second cylinder comprises a second column and a second circular truncated cone body, one end of the second column is fixedly connected with one end of the first column, the other end of the second column is fixedly connected with one end of the second circular truncated cone body, the other end of the second circular truncated cone body is provided as an opening, and the inner diameter of the second circular truncated cone body linearly increases away from the middle position of the second column, the stirrer is rotatably arranged in the inside of the second column, the other end of the rotating body extends into the inside of the second column and is detachably fixedly connected with the stirrer.

2. The automatic sewage tank stirring device according to claim 1, characterized in that, Each of the pressure receiving pieces has an inner concave surface, and the fluid sprayed through the necking is sprayed to the inner concave surface of at least part of the pressure receiving pieces.

3. The automatic sewage tank stirring device according to claim 1, characterized in that, The axis of the first column coincides with the axis of the second column, the axis of the first column coincides with the axis of the first circular truncated cone body, and the axis of the second column coincides with the axis of the second circular truncated cone body.

4. An automatic sewage tank mixing apparatus according to any one of claims 1 to 3, characterized in that, The inner diameter of the first column is equal to the inner diameter of the second column, the inner diameter of the first column is equal to the maximum inner diameter of the first circular truncated cone body, and the inner diameter of the second column is equal to the minimum inner diameter of the second circular truncated cone body.

5. The automatic sewage tank mixing apparatus according to claim 4, wherein A valve body is arranged on the drain pipe, a valve body controller is arranged on the valve body, a floating ball sensor is arranged in the inside of the first circular truncated cone body, and the floating ball sensor is signal connected with the valve body controller.

Images