Valve for sewage stirring treatment and aeration device

Abstract

The utility model discloses a sewage stirring treatment valve which comprises a stirring shaft, a stirring blade and a valve assembly, the stirring blade is installed at the bottom end of the stirring shaft, a communicated air channel is arranged between the stirring blade and the stirring shaft, the air channel on the stirring shaft is connected with an air source, and the valve assembly is installed on the stirring shaft. The valve assembly is mounted in the stirring blade and is matched with the gas channel; the utility model further discloses an aeration device for sewage stirring treatment. The device has the beneficial effects that the device can be opened under the action of stirring centrifugal force and airflow force without the control of electronic components through the purely mechanical valve assembly, and is automatically closed when stirring or aeration is stopped, so that the response speed is high; by means of the design, the valve assembly can stably operate in the severe environment, the reliability and safety of equipment are guaranteed, and then the service life of the valve can be prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of sewage treatment, and in particular to a valve and an aeration device for sewage mixing treatment. Background Art

[0002] In sewage purification, stirring is one of the key processes, which is to add chemicals into the sewage pool, and then promote the effective link of sewage biodegradation through stirring, mixing and aeration.

[0003] In the prior art, stirring and aeration are usually combined together, that is, aeration holes are provided on the stirring blades, which are then connected to the aeration device, so that aeration and stirring are carried out synchronously and can be coordinated with each other. A valve is usually required in the stirring blades to control the aerated gas and prevent sewage from flowing back. Existing valves usually use solenoid valves, which have the following disadvantages: they need to be connected and controlled by the circuit, are easy to be damaged and are inconvenient to install, and the service life of the solenoid valve is greatly reduced when used in water. Therefore, it is necessary to improve the existing valves. Utility Model Content

[0004] One of the purposes of the present application is to provide a valve for sewage mixing treatment.

[0005] Another object of the present application is to provide an aeration device for sewage mixing treatment.

[0006] In order to achieve the above purpose, the technical solution adopted in the present application is: a valve for sewage stirring treatment, comprising a stirring shaft, a stirring blade and a valve assembly, wherein the stirring blade is installed at the bottom end of the stirring shaft, and there is an air channel connected between the stirring blade and the stirring shaft, the air channel on the stirring shaft is connected to an air source, and the valve assembly is installed in the stirring blade and cooperates with the air channel; when stirring and aerating is performed, the valve assembly is suitable for opening under the action of the rotational centrifugal force of the stirring shaft and / or the air flow force generated by the air source.

[0007] Preferably, the valve assembly includes a valve core, which is elastically slidably installed in the stirring blade and cooperates with the air channel; when stirring and aeration is performed, the valve core is suitable for moving away from the air channel under the action of centrifugal force so that the valve assembly opens, and the degree of overlap between the valve core and the air channel is negatively correlated with the rotation speed of the stirring shaft.

[0008] Preferably, the air channel includes channel one arranged on the transmission shaft and channel two arranged on the stirring blade, and channel one and channel two are connected through a buffer section, and the valve core cooperates with the buffer section; when the airflow generated by the air source enters the buffer section, the valve core is suitable for moving away from the buffer section under the force of the airflow.

[0009] Preferably, the buffer section is arranged horizontally, and the valve core is horizontally slidably installed in the stirring blade and cooperates with the buffer section.

[0010] Preferably, the valve core is in a spherical structure, and the valve core is suitable for abutting against the buffer section when elastic force acts on the buffer section.

[0011] Preferably, the buffer section is matched with the channel 1 and the channel 2 in a circular arc transition.

[0012] Preferably, there are a plurality of the second channels, and the bottom end of the stirring blade has a plurality of aeration holes connected to the second channels.

[0013] Preferably, the second channel is arranged at an angle at the bottom end of the stirring blade so that the aeration holes on the same second channel are distributed in a stepped manner.

[0014] Preferably, the top end of the stirring blade is in an arc-shaped structure and corresponds to the channel one, so that the airflow in the channel one can evenly enter the channel two.

[0015] An aeration device for sewage mixing treatment comprises the above-mentioned valve for sewage mixing treatment.

[0016] Compared with the prior art, the beneficial effects of this application are:

[0017] The utility model uses a purely mechanical valve assembly, which does not require the control of electronic components. It can be opened by the centrifugal force of stirring and the force of airflow, and automatically closed when stirring or aeration stops, with a fast response speed. This design enables the valve assembly to operate stably in harsh environments, ensures the reliability and safety of the equipment, and further increases the service life of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model.

[0020] Figure 3 It is a schematic diagram of the enlarged structure of point A of the utility model.

[0021] In the figure: 1, stirring shaft; 2, stirring blade; 3, air channel; 301, channel one; 302, channel two; 303, buffer section; 4, valve assembly; 401, valve core; 402, spring. DETAILED DESCRIPTION

[0022] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0024] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0025] One of the preferred embodiments of the present application is as follows: Figures 1 to 3 As shown, a valve for sewage mixing treatment includes a mixing shaft 1, a mixing blade 2, and a valve assembly 4. The mixing blade 2 is installed at the bottom end of the mixing shaft 1, and there is an air channel 3 connected between the mixing blade 2 and the mixing shaft 1. The air channel 3 on the mixing shaft 1 is connected to the air source. It should be known that the air channel 3 on the mixing shaft 1 can be connected to an air pump, and the valve assembly 4 is installed in the mixing blade 2 and cooperates with the air channel 3.

[0026] It is understandable that the valve assembly 4 is in a closed state when not in use, and the air passage 3 is also blocked. At this time, the airflow cannot be discharged from the air passage 3 of the stirring shaft 1 and the stirring blade 2 for aeration. When stirring and aerating, it should be known that the stirring shaft 1 will rotate, and the air source will also supply gas into the air passage 3; the rotation of the stirring shaft 1 will exert a centrifugal force on the valve assembly 4, and the air flow force of the gas will also have an extrusion effect on the valve assembly 4. At this time, the valve assembly 4 can be opened under the centrifugal force or the air flow force generated by the air source (of course, it can also be the interaction force between the two).

[0027] It can be seen that the valve assembly 4 adopts a purely mechanical structure, and does not require the control of electronic components, that is, it can be opened by the centrifugal force of stirring and the force of airflow, and automatically closed when stirring or aeration stops, and the response speed is fast. This design enables the valve assembly 4 to operate stably in harsh environments, ensures the reliability and safety of the equipment, and further increases the service life of the valve.

[0028] As a further description of the above embodiment: Figure 3 As shown, the valve assembly 4 includes a valve core 401 , which is elastically slidably installed in the stirring blade 2 (through a spring 402 ) and cooperates with the air channel 3 .

[0029] It should be known that when stirring and aerating is performed, the valve core 401 will move away from the air channel 3 under the action of centrifugal force, so that the valve assembly 4 is opened, that is, the air channel 3 is in a smooth state. Of course, the degree of overlap between the valve core 401 and the air channel 3 is negatively correlated with the rotation speed of the stirring shaft 1.

[0030] It can be understood that the faster the rotation speed of the stirring shaft 1, the greater the centrifugal force generated, and thus the greater the movement distance of the valve core 401. In other words, the smaller the overlap between the valve core 401 and the air channel 3, the greater the amount of airflow passing through; conversely, when the rotation speed of the stirring shaft 1 is slower, the centrifugal force is smaller, and thus the amount of airflow passing through is smaller.

[0031] In this embodiment, when the valve core 401 is pushed open by the air flow force, it is assumed here that the air channel 3 is in a vertical state, and the valve core 401 is horizontally slidably arranged and cooperates with the air channel 3. At this time, if the valve core 401 is pushed out of the air channel 3 by the air flow force, it will be very difficult, because the air flow force also has a downward thrust on the valve core 401, and it is difficult to push the valve core 401 horizontally.

[0032] In order to solve the above technical problems, Figure 3 As shown, the air channel 3 includes a channel 1 301 arranged on the stirring shaft 1 and a channel 2 302 arranged on the stirring blade 2, and the channel 1 301 and the channel 2 302 are connected through a buffer section 303, and the valve core 401 cooperates with the buffer section 303.

[0033] It is understandable that the airflow generated by the air source will first enter the buffer section 303 from the channel 1 301, and at this time the airflow will face the valve core 401 and squeeze it, and then the valve core 401 can be driven away from the buffer section 303 by the airflow force. Of course, the greater the airflow force, the greater the squeezing force, and then the greater the moving distance of the valve core 401, that is, the smaller the overlap between the valve core 401 and the air channel 3 (buffer section 303), the greater the amount of airflow passing through, and the reverse reasoning can be applied.

[0034] Further, such as Figure 3 As shown, the buffer section 303 can have various positions. Here, the buffer section 303 is preferably arranged horizontally, and the valve core 401 is also horizontally slidably installed in the stirring blade 2 and cooperates with the buffer section 303.

[0035] It should be known that the channel 301 located in the stirring shaft 1 is generally vertical, and then the airflow will vertically enter the horizontally arranged buffer section 303. Under the guidance of the buffer section 303, the airflow will be horizontal and facing the valve core 401, and then the valve core 401 can be easily pushed under the action of the airflow force, thereby realizing the opening and closing function of the valve.

[0036] Furthermore, in order to reduce the friction resistance between the valve core 401 and the buffer section 303, the valve core 401 preferably adopts a spherical structure, and the valve core 401 is matched with the buffer section 303 under the action of the spring 402, so that the opening and closing of the valve core 401 is smoother. This design can not only improve the working efficiency of the valve, but also extend the service life of the valve. At the same time, the spherical structure can also reduce the wear between the valve core 401 and the buffer section 303, ensuring the stability and reliability of the valve.

[0037] Based on the above embodiment, another embodiment of the present application is as follows: Figure 3 As shown, in order to reduce the resistance of airflow, the buffer section 303 is matched with the arc transition of the channel 1 301 and the channel 2 302, so that the airflow can flow more smoothly when passing through the buffer section 303. The channel structure designed in this way can effectively reduce the turbulence of the airflow and improve the efficiency and performance of the overall system.

[0038] Of course, in order to further improve the effect of aeration, such as Figure 2 and Figure 3 As shown, there can be multiple channels 2 302, preferably distributed in an equidistant circle along the stirring blade 2, and the bottom end of the stirring blade 2 has multiple aeration holes connected to the channel 2 302 to increase the aeration area between the gas and the sewage, thereby improving the aeration effect.

[0039] Furthermore, the second channel 302 can be inclined at the bottom of the stirring blade 2, so that the aeration holes on the same second channel 302 are distributed in a stepped manner, thereby improving the stirring effect and the uniformity of gas-liquid mixing. This design can effectively reduce the aggregation of bubbles, can more evenly transport oxygen to the water body, improve the oxygen dissolution efficiency, promote the circulation of the water body and oxygen exchange, and thus effectively improve the treatment capacity and efficiency of the sewage treatment equipment.

[0040] One of the embodiments of the present application is as follows: Figure 3As shown, since there are multiple channels 2 302 and only one channel 1 301 , in order to allow the airflow to better enter each channel 2 302 , the top of the stirring blade 2 can be set to an arc-shaped structure and correspond to the channel 1 301 .

[0041] It is understandable that if Figure 3 As shown, when the airflow enters the channel 2 302 from the buffer section 303 from the channel 1 301 , the airflow will first hit the arc-shaped protrusion, and then the buffering and guiding effect of the protrusion can make the airflow evenly and smoothly dispersed into the channel 2 302 .

[0042] Another aspect of the present application also provides an aeration device for sewage mixing treatment, including the above-mentioned valve for sewage mixing treatment.

[0043] The working principle of the utility model is:

[0044] like Figure 1 As shown, we take stirring, aeration and mixing in a sewage pool as an example. First, the stirring shaft 1 is installed in the pool and connected to the output end of the driving device. The top of the stirring shaft 1 is connected to the aeration device (air pump) through an air pipe. Of course, the driving device and the air pump are common knowledge known to technicians in this field.

[0045] Start the device, and the driving device will drive the stirring shaft 1 to rotate, and the air pump will let the gas enter from the air channel 3 on the stirring shaft 1. Under the action of centrifugal force, the valve core 401 will move and open, and then the gas will be discharged from the aeration hole of the stirring blade 2, realizing the process of stirring and aerating. We assume that the power of the air pump is certain, then the moving distance of the valve core 401 will be driven by the centrifugal force of the stirring shaft 1. The faster the speed of the stirring shaft 1, the greater the centrifugal force will be, and the greater the moving distance of the valve core 401 will be. In other words, the smaller the overlap between the valve core 401 and the air channel 3, the greater the amount of airflow passing through; conversely, when the speed of the stirring shaft 1 is slower, the centrifugal force will be smaller, and the amount of airflow passing through will be smaller. That is to say, high speed and high aeration volume are related. For example, when the viscosity of sewage is high, in order to fully mix the air, chemicals, sewage and other substances, high speed and high aeration volume are required. Otherwise, low speed and low aeration volume are required. The two can be adaptively adjusted to meet the needs of different sewage treatment processes.

[0046] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A valve for sewage mixing treatment, characterized in that: include: Stirring shaft; A stirring blade, wherein the stirring blade is installed at the bottom end of the stirring shaft, and an air channel is connected between the stirring blade and the stirring shaft, and the air channel on the stirring shaft is connected to an air source; as well as A valve assembly is installed in the stirring blade and cooperates with the air channel; when stirring and aerating, the valve assembly is suitable for opening under the action of the rotating centrifugal force of the stirring shaft and / or the air flow force generated by the air source.

2. The valve for sewage mixing treatment according to claim 1, characterized in that: The valve assembly includes a valve core, which is elastically slidably installed in the stirring blade and cooperates with the air channel; when stirring and aerating, the valve core is suitable for moving away from the air channel under the action of centrifugal force so that the valve assembly opens, and the degree of overlap between the valve core and the air channel is negatively correlated with the rotation speed of the stirring shaft.

3. The valve for sewage mixing treatment as claimed in claim 2, characterized in that: The air channel includes channel one arranged on the stirring shaft and channel two arranged on the stirring blade, and channel one and channel two are connected through a buffer section, and the valve core cooperates with the buffer section; when the airflow generated by the air source enters the buffer section, the valve core is suitable for moving away from the buffer section under the driving force of the airflow.

4. The valve for sewage mixing treatment as claimed in claim 3, characterized in that: The buffer section is arranged horizontally, and the valve core is horizontally slidably installed in the stirring blade and cooperates with the buffer section.

5. The valve for sewage mixing treatment as claimed in claim 4, characterized in that: The valve core is in a spherical structure, and is suitable for abutting against the buffer section when elastic force acts on the buffer section.

6. The valve for sewage mixing treatment as claimed in claim 3, characterized in that: The buffer section is matched with the arc transition of the channel 1 and the channel 2 respectively.

7. The valve for sewage mixing treatment as claimed in claim 3, characterized in that: There are a plurality of the second channels, and the bottom end of the stirring blade has a plurality of aeration holes connected with the second channels.

8. The valve for sewage mixing treatment as claimed in claim 7, characterized in that: The second channel is arranged at the bottom end of the stirring blade in an inclined manner, so that the aeration holes on the same second channel are distributed in a stepped manner.

9. The valve for sewage mixing treatment as claimed in claim 8, characterized in that: The top end of the stirring blade is in an arc-shaped structure and corresponds to the channel one, so that the airflow in the channel one can evenly enter the channel two.

10. An aeration device for sewage mixing treatment, characterized in that: It comprises a valve for sewage mixing treatment as described in any one of claims 1 to 9.

Images