CN115849582B - Stirring aeration device for sewage treatment - Google Patents
Stirring aeration device for sewage treatment Download PDFInfo
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- CN115849582B CN115849582B CN202211602987.5A CN202211602987A CN115849582B CN 115849582 B CN115849582 B CN 115849582B CN 202211602987 A CN202211602987 A CN 202211602987A CN 115849582 B CN115849582 B CN 115849582B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The application discloses sewage treatment is with stirring aeration equipment includes: the base plate is arranged above the sewage pool; the transmission shaft is rotatably arranged on the base plate and is suitable for extending downwards into the sewage pool; a diversion channel is axially formed on the transmission shaft; the impeller is fixedly arranged at the lower end of the transmission shaft; the power source is suitable for driving the transmission shaft to rotate; the air source is connected with the transmission shaft and is suitable for supplying air to the sewage pool through the diversion channel; the valve component is arranged on the transmission shaft and is suitable for controlling the air supply quantity of the diversion channel; and the rotating speed of the transmission shaft is positively correlated with the opening degree of the valve component. Has the advantages of integrating stirring and aeration, convenient control and full mixing.
Description
Technical Field
The application relates to the field of sewage treatment, in particular to a stirring aeration device.
Background
In recent years, the discharge amount of industrial sewage and domestic sewage in China tends to increase year by year, and untreated or improperly treated sewage is directly discharged into the nature, so that the environmental sanitation is seriously affected, and the water use safety of people is threatened. In order to achieve the water quality requirement of sewage discharged into a certain water body or reused, the sewage needs to be purified, and the process is sewage treatment. Sewage treatment is becoming an important link for environmental protection.
In the sewage purification treatment, stirring is one of the key technological processes, and is used for stirring and mixing substances such as sewage, medicaments and the like; in the stirring process, an aeration process is often needed for fully mixing sewage, and the contact area of the sewage and oxygen is increased, so that the effective link of sewage biodegradation is promoted. In the process, a stirrer, an aerator and a medicine adding machine are required to be arranged.
However, in the existing sewage purification treatment, there are several problems as follows: (1) A plurality of devices such as a stirrer, an aerator, a medicine adding machine and the like are required to be equipped, so that the cost of the sewage treatment system is high, and the maintenance is inconvenient; (2) The stirrer, the aerator and the medicine adding machine are required to be controlled respectively according to the process steps, and a great obstacle exists in the cooperative control of various devices; (3) Stirring, aeration and medicine adding processes are independently carried out, and cannot be coordinated, so that insufficient mixing of sewage and medicines can be caused.
Therefore, how to improve the existing sewage treatment equipment to overcome the above problems is a problem to be solved by those skilled in the art.
Disclosure of Invention
An object of the present application is to provide a stirring aeration device for sewage treatment which integrates stirring and aeration, is convenient to control and is fully mixed.
In order to achieve the above purpose, the technical scheme adopted in the application is as follows: a stirring aeration device for sewage treatment, comprising:
the base plate is arranged above the sewage pool;
the transmission shaft is rotatably arranged on the base plate and is suitable for extending downwards into the sewage pool; a diversion channel is axially formed on the transmission shaft;
the impeller is fixedly arranged at the lower end of the transmission shaft;
the power source is suitable for driving the transmission shaft to rotate;
the air source is connected with the transmission shaft and is suitable for supplying air to the sewage pool through the diversion channel;
the valve component is arranged on the transmission shaft and is suitable for controlling the air supply quantity of the diversion channel; the rotating speed of the transmission shaft is positively correlated with the opening of the valve assembly;
the valve assembly comprises a valve body and a valve core, a valve channel is arranged in the valve body, the valve body is fixedly connected with the transmission shaft, the valve channel is communicated with the diversion channel, and the valve core is movably arranged in the valve body and is suitable for opening and closing the valve channel; the valve core has eccentric mass, the valve core has a movement trend along the horizontal direction, the rotation of the transmission shaft is suitable for generating centrifugal force on the valve core, the valve core is driven to move in a direction far away from the rotation center, the valve channel is opened, and the rotation speed of the transmission shaft is positively correlated with the opening size of the valve channel.
Further, the valve core is slidably arranged in the valve body along the horizontal direction, the valve core comprises a separation section, an extension section and a balancing weight, the separation section is suitable for penetrating into the valve channel and controlling the opening size of the valve channel, one end of the extension section is connected with the separation section, the other end of the extension section extends towards the eccentric direction, and the balancing weight is arranged at the other end of the extension section; an elastic piece is arranged between the valve body and the valve core, the elastic piece is suitable for forcing the valve core to slide towards the direction of the rotation center, the separation section is used for closing the valve channel, the centrifugal force generated by the rotation of the transmission shaft on the valve core is suitable for overcoming the elastic force of the elastic piece, the valve core is driven to slide towards the direction far away from the rotation center, and the separation section is used for opening the valve channel.
Further, the balancing weights are arranged on the extension section in a replaceable manner, and the valve core is suitable for being configured with the balancing weights with different masses or different numbers and is used for matching the relation between the opening degree of the valve assembly and the rotating speed of the transmission shaft.
Further, the valve body comprises a lower valve body and an upper valve body, the valve channel penetrates through the lower valve body and the upper valve body in the vertical direction and is positioned at the rotation center, a partition chamber is arranged at the center of the lower valve body, the valve channel is positioned in the partition chamber, a counterweight chamber is arranged at the eccentric position of the lower valve body, the partition section is slidably arranged in the partition chamber, the extension section passes through the partition chamber in a sealing manner and enters the counterweight chamber, the counterweight is suitable for being placed on the extension section entering the counterweight chamber, and the upper valve body is sealed on the partition chamber;
an openable cover body is arranged above the counterweight chamber, an upright post is arranged at the other end of the extension section along the vertical direction, the counterweight is suitable for being sleeved on the upright post, and the counterweight is suitable for being replaced or increased or decreased after the cover body is opened;
the valve body is also provided with a ball, and the valve core is suitable for sliding on the ball.
Further, the valve cores are multiple and uniformly distributed along the circumferential direction;
the valve body is further provided with a plurality of rollers which are uniformly distributed along the circumferential direction, the base plate is fixedly provided with a circular guide rail, and the rollers are suitable for rolling along the circular guide rail when the transmission shaft rotates.
Further, the sewage treatment device also comprises a medicine adding assembly, wherein the medicine adding assembly is connected with the transmission shaft and is suitable for supplying medicine to the sewage pool through the diversion channel.
Further, the medicine adding component comprises a barrel, a piston and a driving mechanism, wherein the barrel is connected with a liquid suction pipe and a liquid delivery pipe, the liquid suction pipe is provided with a first one-way valve for the medicine to flow into the barrel, the liquid delivery pipe is provided with a second one-way valve for the medicine to flow out of the barrel, the liquid suction pipe is connected with a medicine box, the liquid delivery pipe is connected with the flow guide channel, and the driving mechanism is suitable for driving the piston to slide in the barrel; when the driving mechanism pulls the piston, the medicament enters the cylinder body from the medicament box through the liquid suction pipe and the first one-way valve, and when the driving mechanism pushes the piston, the medicament enters the flow guide channel from the cylinder body through the liquid delivery pipe and the second one-way valve.
Further, the driving mechanism comprises a base, a screw rod, a guide rod, a slide block and a medicine adding motor, wherein the base is fixedly arranged, the screw rod extends along the sliding direction of the piston and is rotationally arranged on the base, the guide rod is fixedly arranged on the base and is parallel to the screw rod, the slide block is in threaded connection with the screw rod and is suitable for sliding along the guide rod, and the medicine adding motor is suitable for driving the screw rod to rotate so as to drive the slide block to slide; a bridging plate extends out of the piston and is fixedly connected with the sliding block;
the flow guide channel penetrates through the upper end of the transmission shaft, the upper end of the transmission shaft is connected with a rotating joint in a sealing and rotating manner, a support is fixedly arranged on the substrate, the rotating joint is fixedly arranged on the support, an air passage is formed in the rotating joint, and the air passage is connected with the air source through an air pipe;
the air flue penetrates through the upper end of the rotating joint, the upper end of the rotating joint is fixedly connected with a liquid feeding end cover in a sealing mode, and the liquid feeding pipe penetrates through the liquid feeding end cover and is communicated with the diversion channel.
Further, the impeller includes hyperboloid agitator disk, water conservancy diversion rib and shearing rib, the water conservancy diversion rib have many and be the heliciform distribute in hyperboloid agitator disk upper surface, hyperboloid agitator disk below has the negative pressure chamber, water conservancy diversion passageway intercommunication the negative pressure chamber, shearing rib have a plurality of and evenly distributed in hyperboloid agitator disk lower surface, shearing rib follows the negative pressure chamber outwards extends and surpass hyperboloid agitator disk side.
Further, an air outlet disc is fixedly arranged at the lower end of the transmission shaft, the air outlet disc is communicated with the diversion channel, and a plurality of air outlet holes are uniformly formed in the air outlet disc;
the shearing rib comprises a pointed end section, an inclined extension section and a horizontal section, the top of the pointed end section is sharp, the pointed end section extends upwards into the negative pressure cavity, the horizontal section extends outwards beyond the side surface of the hyperboloid stirring disc, and the inclined extension section is connected with the pointed end section and the horizontal section;
the lower part of the horizontal section is in a zigzag shape;
the shearing ribs are spirally distributed, and the spiral directions of the shearing ribs and the flow guiding ribs are the same.
Compared with the prior art, the beneficial effect of this application lies in: firstly, the stirring function and the aeration function are integrated on the same device, and the device has the advantages of compact structure, convenience in installation, simplicity and convenience in maintenance and low cost. Secondly, the scheme utilizes the diversion channel of the transmission shaft to supply air, thereby realizing one-shaft multi-purpose and further simplifying the structure of the device; and the transmission shaft directly conveys the gas to the impeller, so that the impeller is convenient for stirring the gas in time, and the gas can be efficiently mixed in sewage, thereby achieving the aim of full mixing. More key is that the valve assembly is arranged, the valve core of the valve assembly is rotated by the transmission shaft to obtain centrifugal force, and then the opening degree of the valve assembly can be automatically controlled according to the rotating speed of the transmission shaft, so that the self-adaption of the air supply quantity is realized.
Drawings
Fig. 1 is a perspective structural view according to a preferred embodiment of the present application.
Fig. 2 is a half cross-sectional view according to a preferred embodiment of the present application.
Fig. 3 is a half cross-sectional view of an impeller in accordance with a preferred embodiment of the present application.
Fig. 4 is a schematic illustration of an improved arrangement of shear ribs in accordance with a preferred embodiment of the present application.
Fig. 5 is a schematic view of the structure of a shear rib in accordance with a preferred embodiment of the present application.
Fig. 6 is a schematic view of a modified structure of a shear rib according to a preferred embodiment of the present application.
Fig. 7 is an enlarged view of a portion at a in fig. 1 according to a preferred embodiment of the present application.
Fig. 8 is a schematic perspective view of a valve assembly according to a preferred embodiment of the present application.
Fig. 9 is an exploded schematic view of a valve assembly in accordance with a preferred embodiment of the present application.
Fig. 10 is a half cross-sectional view (closed state) of a valve assembly in accordance with a preferred embodiment of the present application.
Fig. 11 is a top view (closed state) of the valve assembly with the upper valve body and cover hidden according to a preferred embodiment of the present application.
Fig. 12 is a half cross-sectional view (open state) of a valve assembly according to a preferred embodiment of the present application.
Fig. 13 is a top view (open state) of the valve assembly with the upper valve body and cover hidden according to a preferred embodiment of the present application.
Fig. 14 is a schematic view of a valve assembly according to a preferred embodiment of the present application with a balancing weight replaced.
Fig. 15 is a schematic view of a valve cartridge according to a preferred embodiment of the present application using gravity as a restoring force.
Fig. 16 is a schematic illustration of the connection of the swivel joint, the bracket and the air tube according to a preferred embodiment of the application.
FIG. 17 is a schematic illustration of the connection of a liquid delivery end cap and a liquid delivery tube in accordance with a preferred embodiment of the present application.
Fig. 18 is a schematic perspective view of a dosing assembly according to a preferred embodiment of the present application.
Fig. 19 is an installation schematic diagram according to a preferred embodiment of the present application.
In the figure: 100. a sewage pool; 200. a medicament box; 1. a substrate; 11. a bracket; 2. a transmission shaft; 21. a diversion channel; 22. an air outlet disc; 221. an air outlet hole; 3. an impeller; 30. a negative pressure chamber; 31. hyperboloid agitator disk; 32. a guide rib; 33. shearing the ribs; 331. a tip segment; 332. an inclined extension section; 333. a horizontal section; 4. a power source; 41. a power motor; 42. a reduction gearbox; 43. a drive gear; 44. a driven gear; 5. a gas source; 51. an air pipe; 52. a rotary joint; 521. an airway; 6. a valve assembly; 61. a valve body; 610. a valve passageway; 611. a lower valve body; 612. an upper valve body; 613. a compartment; 614. a counterweight chamber; 615. a cover body; 616. a ball; 617. a roller; 618. a circular guide rail; 62. a valve core; 621. a separation section; 622. an extension section; 623. balancing weight; 624. a column; 63. an elastic member; 7. a drug adding component; 71. a cylinder; 72. a piston; 721. a bridging plate; 73. a driving mechanism; 731. a base; 732. a screw rod; 733. a guide rod; 734. a slide block; 735. a medicine adding motor; 74. a liquid suction pipe; 75. a liquid feeding pipe; 76. a first one-way valve; 77. a second one-way valve; 78. a liquid feeding end cover.
Detailed Description
The present application will be further described with reference to the specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.
In the description of the present application, it should be noted that, for the azimuth terms, such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships of the drawings, only for convenience of description and simplification of the description, and not to indicate or imply that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and should not be construed as limiting the specific protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
The terms "comprises" and "comprising," along with any variations thereof, in the description and claims of the present application are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1 to 19, a preferred embodiment of the present application includes:
a base plate 1, the base plate 1 is arranged above the sewage tank 100.
A transmission shaft 2 rotatably provided on the base plate 1 and adapted to extend downward into the sewage tank 100; the transmission shaft 2 is axially provided with a diversion channel 21.
The impeller 3, the impeller 3 is fixedly arranged at the lower end of the transmission shaft 2.
A power source 4, the power source 4 is suitable for driving the transmission shaft 2 to rotate; the present embodiment adopts a conventional combination mechanism of a power motor 41, a reduction gearbox 42, a driving gear 43 and a driven gear 44 as the power source 4.
The air source 5, the air source 5 is connected with the transmission shaft 2 and is suitable for supplying air to the sewage pool 100 through the diversion channel 21. In this embodiment, the air pump station with the air source 5 supplying air in a centralized manner replaces the conventional independent air blower to supply air, and the air pump station can be connected with a plurality of stirring aeration devices through the air pipe 51 to supply air to a plurality of sewage tanks 100, so that the sewage tank has the advantages of simple structure, convenient control and low cost.
The valve component 6, the valve component 6 is set up on drive shaft 2, and is suitable for controlling the air supply amount of the diversion channel 21; and the rotation speed of the transmission shaft 2 is positively correlated with the opening degree of the valve assembly 6.
The dosing assembly 7. The dosing assembly 7 is connected to the drive shaft 2 and is adapted to supply a drug to the lagoon 100 through the diversion channel 21.
The stirring function, the aeration function and the medicine adding function are integrated on the same device, and the device has the advantages of compact structure, convenience in installation, simplicity and convenience in maintenance and low cost. In addition, the embodiment utilizes the diversion channel 21 of the transmission shaft 2 to supply air and add medicine, thereby realizing one-shaft multi-purpose and further simplifying the structure of the device. And the transmission shaft 2 directly conveys gas and medicament to the impeller 3, so that the impeller 3 can stir the gas and the medicament in time, and the gas and the medicament can be efficiently mixed in sewage, thereby achieving the aim of fully mixing.
It is known that in sewage purification treatment, there is a difference in the rotational speed requirement of the stirring apparatus for different sewage and different treatment stages, and also there is a difference in the aeration amount requirement of the aeration apparatus. For example, when the viscosity of sewage is high, in order to sufficiently mix air, chemicals, sewage and the like, a high rotation speed and a high aeration rate are required, whereas a low rotation speed and a low aeration rate are required. According to the actual demand summary, the rotating speed demand of the stirring equipment and the aeration quantity demand of the aeration equipment are positively correlated.
Therefore, according to the integrated stirring aeration device of the embodiment, the above requirements can be met only by setting the rotation speed of the transmission shaft 2 to be positively correlated with the opening degree of the valve assembly 6. To achieve the above function, it is easily conceivable to design the valve assembly 6 as a solenoid valve and integrate it into the same control system as the power motor 41, which can dynamically adjust the opening of the solenoid valve according to the rotation speed of the power motor 41. Although the above-mentioned electric embodiment can realize the above-mentioned function, there is the shortcoming of high cost, and the environmental gap of different effluent water ponds 100 is huge, and the comparatively accurate components and parts of solenoid valve use in the comparatively abominable effluent water pond 100 of environment, life can greatly reduced, has further increased use and maintenance cost.
Based on this, this application has carried out the key design improvement to valve subassembly 6, adopts pure mechanical structure to utilize centrifugal principle, realized the self-adaptation of its aperture and adjusted, specific structure is as follows:
as shown in fig. 8 to 15, the valve assembly 6 includes a valve body 61 and a valve core 62, the valve body 61 has a valve channel 610 therein, the valve body 61 is fixedly connected with the transmission shaft 2, the valve channel 610 is communicated with the diversion channel 21, and the valve core 62 is movably arranged in the valve body 61 and is suitable for opening and closing the valve channel 610; the valve core 62 has eccentric mass, the valve core 62 has a movement trend along the horizontal direction, the rotation of the transmission shaft 2 is suitable for generating centrifugal force (belonging to virtual force) on the valve core 62, the valve core 62 is driven to move away from the rotation center, the valve channel 610 is opened, and the rotation speed of the transmission shaft 2 is positively correlated with the opening size of the valve channel 610, namely, the opening is larger as the rotation speed is larger.
The various structural forms of the valve core 62 driven by centrifugal force can be realized, and the present embodiment illustrates only one preferred embodiment. As shown in fig. 8 to 14, the valve core 62 is slidably disposed in the valve body 61 along a horizontal direction, and as can be seen from fig. 11 and 13, the valve core 62 includes a partition 621, an extension 622 and a balancing weight 623, the partition 621 is adapted to invade the valve channel 610 and control the opening size of the valve channel 610, one end of the extension 622 is connected to the partition 621, the other end of the extension 622 extends in an eccentric direction, and the balancing weight 623 is disposed at the other end of the extension 622; an elastic member 63 is arranged between the valve body 61 and the valve core 62, the elastic member 63 is suitable for forcing the valve core 62 to slide towards the rotation center, and the partition 621 is used for closing the valve channel 610, the centrifugal force generated by the rotation of the transmission shaft 2 on the valve core 62 is suitable for overcoming the elastic force of the elastic member 63, driving the valve core 62 to slide towards the direction away from the rotation center, and the partition 621 is used for opening the valve channel 610; wherein divider 621 fully closes valve passageway 610 in fig. 11 and divider 621 fully opens valve passageway 610 in fig. 13.
It can be seen that in the above-described structure of the valve assembly 6, the elastic force of the elastic member 63 is introduced as the restoring force of the valve body 62 to close the valve passage 610. Obviously, other external forces may also be used as the restoring force. As shown in fig. 15, when the valve body 62 has a movement tendency in the vertical direction with respect to the valve body 61, the valve body 62 can slide obliquely downward with respect to gravity as a restoring force when the transmission shaft 2 is not rotated, for closing the valve passage 610, and slide obliquely upward against gravity when the transmission shaft 2 is rotated, for opening the valve passage 610.
As shown in fig. 14, a further key design of this embodiment is that the balancing weights 623 are interchangeably disposed on the extension 622, and the valve core 62 is adapted to be configured with different weights or different numbers of balancing weights 623 for matching the relationship between the opening of the valve assembly 6 and the rotational speed of the transmission shaft 2. Although the rotation speed of the transmission shaft 2 is positively correlated with the opening degree of the valve component 6, for different sewage and different treatment stages, different requirements for aeration amount exist under the same rotation speed of the transmission shaft 2, namely, the opening degree requirement for the valve component 6 is different, so that the valve component 6 can be used for changing the opening degree of the valve component 6 under the same condition by adjusting the quantity or the quality of the balancing weights 623, and the applicability of the valve component is improved.
As shown in fig. 8 to 13, in view of processing and assembly, the valve body 61 is designed to be divided into a lower valve body 611 and an upper valve body 612, the valve passage 610 is vertically penetrating through the lower valve body 611 and the upper valve body 612 and is located at the center of rotation, the lower valve body 611 is provided with a compartment 613, the valve passage 610 is located in the compartment 613, the lower valve body 611 is provided with a weight chamber 614 at an eccentric position, the compartment 621 is slidably disposed in the compartment 613, the extension 622 is sealed to penetrate through the compartment 613 and enter the weight chamber 614, the weight 623 is adapted to be placed on the extension 622 entering the weight chamber 614, and the upper valve body 612 is sealed to the compartment 613; as shown in fig. 14, in order to replace the balancing weight 623 conveniently, a openable cover 615 is arranged above the balancing weight chamber 614, a vertical column 624 is arranged at the other end of the extension section 622 along the vertical direction, the balancing weight 623 is suitable for being sleeved on the vertical column 624, and the balancing weight 623 is suitable for being replaced or increased or decreased after the cover 615 is opened.
As shown in fig. 10 and 12, in order to reduce friction force when the spool 62 slides, thereby reducing wear, the valve body 61 is further provided with balls 616, and the spool 62 is adapted to slide on the balls 616.
Considering the stability of the operation of the present embodiment (mainly rotational stability is considered), as shown in fig. 7 to 14, two spools 62 are symmetrically provided for balancing the weight; the valve body 61 is also provided with a plurality of rollers 617, the rollers 617 are uniformly distributed along the circumferential direction, the base plate 1 is fixedly provided with a circular guide rail 618, and the rollers 617 are suitable for rolling along the circular guide rail 618 when the transmission shaft 2 rotates, which is equivalent to a rotating bearing of the valve assembly 6, so that the rotating stability of the valve assembly is ensured.
The medicine adding module 7 and the air source 5 in this embodiment share the diversion channel 21, and the air source 5 has a requirement for sealing the diversion channel 21 when supplying air, and the air pressure in the diversion channel 21 is large (higher than the atmospheric pressure) when supplying air, so that the medicine adding module 7 is difficult to implement by adopting a instillation or pumping mode to deliver medicine.
Based on this, the drug adding module 7 of the present embodiment performs drug delivery by pressure injection, specifically, adopts the principle of a syringe injector, performs liquid suction by negative pressure, and performs liquid delivery by positive pressure. As shown in fig. 18, the medicine adding assembly 7 of the embodiment includes a cylinder 71, a piston 72 and a driving mechanism 73, the cylinder 71 is connected with a liquid suction pipe 74 and a liquid feeding pipe 75, the liquid suction pipe 74 is provided with a first one-way valve 76 for the medicine to flow into the cylinder 71, the liquid feeding pipe 75 is provided with a second one-way valve 77 for the medicine to flow out of the cylinder 71, the liquid suction pipe 74 is connected with a medicine box 200, the liquid feeding pipe 75 is connected with a diversion channel 21, and the driving mechanism 73 is suitable for driving the piston 72 to slide in the cylinder 71; when the driving mechanism 73 pulls the piston 72, the medicine enters the cylinder 71 from the medicine box 200 through the liquid suction pipe 74 and the first check valve 76, and when the driving mechanism 73 pushes the piston 72, the medicine enters the diversion channel 21 from the cylinder 71 through the liquid feed pipe 75 and the second check valve 77. Wherein, the combination of the first check valve 76 and the second check valve 77 can realize the one-way flow of the medicament, and the second check valve 77 also has the function of preventing the gas from entering the cylinder 71.
Further specifically, as shown in fig. 18, the driving mechanism 73 of the present embodiment adopts a screw slider structure (the same working principle as that of the injection pump), and includes a base 731, a screw 732, a guide rod 733, a slider 734 and a dosing motor 735, wherein the base 731 is fixedly arranged, the screw 732 extends along the sliding direction of the piston 72 and is rotatably arranged on the base 731, the guide rod 733 is fixedly arranged on the base 731 and is parallel to the screw 732, the slider 734 is in threaded connection with the screw 732 and is suitable for sliding along the guide rod 733, and the dosing motor 735 is suitable for driving the screw 732 to rotate, so as to drive the slider 734 to slide; extending from the piston 72 is a bridge plate 721, the bridge plate 721 being fixedly connected to the slider 734. The driving mechanism 73 with the above structure can realize quantitative medicine adding and is convenient to control.
As shown in fig. 2, 7 and 16, the embodiment designs that the diversion channel 21 penetrates through the upper end of the transmission shaft 2, the upper end of the transmission shaft 2 is in sealed rotation connection with a rotary joint 52, a bracket 11 is fixedly arranged on the base plate 1, the rotary joint 52 is fixedly arranged on the bracket 11, an air channel 521 is arranged on the rotary joint 52, and the air channel 521 is connected with the air source 5 through the air pipe 51; as shown in fig. 2, 7 and 17, the air passage 521 in this embodiment is designed to penetrate through the upper end of the rotary joint 52, the upper end of the rotary joint 52 is fixedly connected with a liquid-feeding end cover 78 in a sealing manner, and the liquid-feeding pipe 75 penetrates through the liquid-feeding end cover 78 and is communicated with the diversion channel 21.
In addition, the impeller 3 structure plays a critical role in the mixing effect. As shown in fig. 3 to 6, the impeller 3 of the present embodiment adopts a hyperboloid structure, which includes a hyperboloid stirring disc 31, a flow guiding rib 32 and a shearing rib 33, the flow guiding rib 32 has a plurality of spiral shapes and is distributed on the upper surface of the hyperboloid stirring disc 31, a negative pressure cavity 30 is arranged below the hyperboloid stirring disc 31, the flow guiding channel 21 is communicated with the negative pressure cavity 30, the shearing rib 33 has a plurality of shapes and is uniformly distributed on the lower surface of the hyperboloid stirring disc 31, and the shearing rib 33 extends outwards from the negative pressure cavity 30 and exceeds the side surface of the hyperboloid stirring disc 31. Wherein the guide rib 32 is matched with the hyperboloid stirring disc 31 to play a main role of stirring. The shearing ribs 33 can divide the bubbles formed in the negative pressure cavity 30, so that the volume of the bubbles is smaller, and therefore, oxygen in the bubbles can be more easily dissolved into sewage, and the bubbles are widely distributed in a liquid phase space; simultaneously, the shearing rib 33 can stir the mud-water mixture in the play pond effectively, and supplementary hyperboloid agitator disk 31, water conservancy diversion rib 32 stir, reinforcing stirring effect. In addition, as shown in fig. 4, the shearing ribs 33 are spirally distributed, and the shearing ribs 33 and the guide ribs 32 are spirally oriented in the same direction, so as to reduce stirring resistance.
To further enhance the "aeration" effect, this embodiment also makes the following three improvements:
(1) As shown in fig. 2, an air outlet disc 22 is fixedly arranged at the lower end of the transmission shaft 2, the air outlet disc 22 is communicated with the diversion channel 21, and a plurality of air outlet holes 221 are uniformly formed in the air outlet disc 22; the air outlet disc 22 can divide the single air flow of the diversion channel 21 into a plurality of air flows to form smaller bubbles, thereby improving the aeration effect.
(2) As shown in fig. 5, the shearing rib 33 is designed into three parts of a tip section 331, an inclined extension section 332 and a horizontal section 333, the top of the tip section 331 is sharp, the tip section 331 extends upwards into the negative pressure cavity 30, the horizontal section 333 extends outwards beyond the side surface of the hyperboloid stirring disc 31, and the inclined extension section 332 connects the tip section 331 and the horizontal section 333; the tip section 331 can timely further puncture and divide the bubbles coming out of the air outlet disc 22 to form smaller bubbles, and the horizontal section 333 is epitaxially arranged to stir the bubbles to a wider area, so that the aeration effect is promoted again.
(3) As shown in fig. 6, the design level 333 is saw-toothed below; the air bubbles can be further punctured to improve the aeration effect.
The foregoing has outlined the basic principles, main features and advantages of the present application. It will be appreciated by persons skilled in the art that the present application is not limited to the embodiments described above, and that the embodiments and descriptions described herein are merely illustrative of the principles of the present application, and that various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of protection of the present application is defined by the appended claims and equivalents thereof.
Claims (9)
1. A stirring aeration device for sewage treatment, characterized by comprising:
the base plate is arranged above the sewage pool;
the transmission shaft is rotatably arranged on the base plate and is suitable for extending downwards into the sewage pool; a diversion channel is axially formed on the transmission shaft;
the impeller is fixedly arranged at the lower end of the transmission shaft;
the power source is suitable for driving the transmission shaft to rotate;
the air source is connected with the transmission shaft and is suitable for supplying air to the sewage pool through the diversion channel;
the valve component is arranged on the transmission shaft and is suitable for controlling the air supply quantity of the diversion channel; the rotating speed of the transmission shaft is positively correlated with the opening of the valve assembly;
the valve assembly comprises a valve body and a valve core, a valve channel is arranged in the valve body, the valve body is fixedly connected with the transmission shaft, the valve channel is communicated with the diversion channel, and the valve core is movably arranged in the valve body and is suitable for opening and closing the valve channel; the valve core has eccentric mass, the valve core has a movement trend along the horizontal direction, the rotation of the transmission shaft is suitable for generating centrifugal force on the valve core and driving the valve core to move in a direction far away from the rotation center so as to open the valve channel, and the rotation speed of the transmission shaft is positively correlated with the opening size of the valve channel;
the valve core is arranged in the valve body in a sliding manner along the horizontal direction, the valve core comprises a separation section, an extension section and a balancing weight, the separation section is suitable for penetrating into the valve channel and controlling the opening size of the valve channel, one end of the extension section is connected with the separation section, the other end of the extension section extends towards the eccentric direction, and the balancing weight is arranged at the other end of the extension section; an elastic piece is arranged between the valve body and the valve core, the elastic piece is suitable for forcing the valve core to slide towards the direction of the rotation center, the separation section is used for closing the valve channel, the centrifugal force generated by the rotation of the transmission shaft on the valve core is suitable for overcoming the elastic force of the elastic piece, the valve core is driven to slide towards the direction far away from the rotation center, and the separation section is used for opening the valve channel.
2. A stirring aeration device for sewage treatment according to claim 1, wherein: the balancing weights are arranged on the extending sections in a replaceable mode, and the valve cores are suitable for being configured with balancing weights of different masses or different numbers and used for matching the relation between the opening degree of the valve assembly and the rotating speed of the transmission shaft.
3. A stirring aeration device for sewage treatment according to claim 2, wherein: the valve body comprises a lower valve body and an upper valve body, the valve channel penetrates through the lower valve body and the upper valve body in the vertical direction and is positioned at the rotating center, a partition chamber is arranged at the center of the lower valve body, the valve channel is positioned in the partition chamber, a counterweight chamber is arranged at the eccentric position of the lower valve body, the partition section is slidably arranged in the partition chamber, the extension section passes through the partition chamber in a sealing manner and enters the counterweight chamber, the counterweight is suitable for being placed on the extension section entering the counterweight chamber, and the upper valve body is sealed on the partition chamber;
an openable cover body is arranged above the counterweight chamber, an upright post is arranged at the other end of the extension section along the vertical direction, the counterweight is suitable for being sleeved on the upright post, and the counterweight is suitable for being replaced or increased or decreased after the cover body is opened;
the valve body is also provided with a ball, and the valve core is suitable for sliding on the ball.
4. A stirring aeration device for sewage treatment according to claim 1, wherein: the valve cores are multiple and uniformly distributed along the circumferential direction;
the valve body is further provided with a plurality of rollers which are uniformly distributed along the circumferential direction, the base plate is fixedly provided with a circular guide rail, and the rollers are suitable for rolling along the circular guide rail when the transmission shaft rotates.
5. A stirring aeration device for sewage treatment according to claim 1, wherein: the device also comprises a medicine adding component which is connected with the transmission shaft and is suitable for supplying medicine to the sewage pool through the diversion channel.
6. A stirring aeration device for sewage treatment according to claim 5, wherein: the medicine adding assembly comprises a barrel, a piston and a driving mechanism, wherein the barrel is connected with a liquid suction pipe and a liquid delivery pipe, the liquid suction pipe is provided with a first one-way valve for the medicine to flow into the barrel, the liquid delivery pipe is provided with a second one-way valve for the medicine to flow out of the barrel, the liquid suction pipe is connected with a medicine box, the liquid delivery pipe is connected with the flow guide channel, and the driving mechanism is suitable for driving the piston to slide in the barrel; when the driving mechanism pulls the piston, the medicament enters the cylinder body from the medicament box through the liquid suction pipe and the first one-way valve, and when the driving mechanism pushes the piston, the medicament enters the flow guide channel from the cylinder body through the liquid delivery pipe and the second one-way valve.
7. A stirring aeration device for sewage treatment according to claim 6, wherein: the driving mechanism comprises a base, a screw rod, a guide rod, a sliding block and a medicine adding motor, wherein the base is fixedly arranged, the screw rod extends along the sliding direction of the piston and is rotationally arranged on the base, the guide rod is fixedly arranged on the base and is parallel to the screw rod, the sliding block is in threaded connection with the screw rod and is suitable for sliding along the guide rod, and the medicine adding motor is suitable for driving the screw rod to rotate so as to drive the sliding block to slide; a bridging plate extends out of the piston and is fixedly connected with the sliding block;
the flow guide channel penetrates through the upper end of the transmission shaft, the upper end of the transmission shaft is connected with a rotating joint in a sealing and rotating manner, a support is fixedly arranged on the substrate, the rotating joint is fixedly arranged on the support, an air passage is formed in the rotating joint, and the air passage is connected with the air source through an air pipe;
the air flue penetrates through the upper end of the rotating joint, the upper end of the rotating joint is fixedly connected with a liquid feeding end cover in a sealing mode, and the liquid feeding pipe penetrates through the liquid feeding end cover and is communicated with the diversion channel.
8. A stirring aeration device for sewage treatment according to claim 1, wherein: the impeller comprises a hyperboloid stirring disc, flow guide ribs and shearing ribs, wherein the flow guide ribs are provided with a plurality of flow guide ribs and are spirally distributed on the upper surface of the hyperboloid stirring disc, a negative pressure cavity is formed below the hyperboloid stirring disc, the flow guide channels are communicated with the negative pressure cavity, the shearing ribs are provided with a plurality of flow guide channels and are uniformly distributed on the lower surface of the hyperboloid stirring disc, and the shearing ribs extend outwards from the negative pressure cavity and exceed the side surface of the hyperboloid stirring disc.
9. A stirring aeration device for sewage treatment according to claim 8, wherein: an air outlet disc is fixedly arranged at the lower end of the transmission shaft, the air outlet disc is communicated with the diversion channel, and a plurality of air outlet holes are uniformly formed in the air outlet disc;
the shearing rib comprises a pointed end section, an inclined extension section and a horizontal section, the top of the pointed end section is sharp, the pointed end section extends upwards into the negative pressure cavity, the horizontal section extends outwards beyond the side surface of the hyperboloid stirring disc, and the inclined extension section is connected with the pointed end section and the horizontal section;
the lower part of the horizontal section is in a zigzag shape;
the shearing ribs are spirally distributed, and the spiral directions of the shearing ribs and the flow guiding ribs are the same.
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| CN202211602987.5A CN115849582B (en) | 2022-12-13 | 2022-12-13 | Stirring aeration device for sewage treatment |
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| CN202211602987.5A CN115849582B (en) | 2022-12-13 | 2022-12-13 | Stirring aeration device for sewage treatment |
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| Publication number | Publication date |
|---|---|
| CN115849582A (en) | 2023-03-28 |
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