CN117735742B - An aerated grit chamber for efficient sand removal - Google Patents
An aerated grit chamber for efficient sand removalInfo
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- CN117735742B CN117735742B CN202410104270.0A CN202410104270A CN117735742B CN 117735742 B CN117735742 B CN 117735742B CN 202410104270 A CN202410104270 A CN 202410104270A CN 117735742 B CN117735742 B CN 117735742B
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- sand
- pipe
- aeration
- slag
- discharging
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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
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
本申请提供的一种高效排砂的曝气沉砂池，涉及污水处理技术领域，包括：所述集砂斗内设置有池底排砂管，且所述池底排砂管沿所述集砂斗的长度方向铺设，所述池底排砂管被设置为顶部敞口的半圆形管或顶部敞口的方形管，所述池底排砂管内均布有多个刮砂板，所述刮砂板被设置为沿所述池底排砂管的长度方向移动，以刮除集砂斗内的砂粒；所述池底排砂管通过输送管与驱动箱体相连接，所述驱动箱体内设置有驱动齿轮，所述驱动齿轮与所述第一驱动器相连接，所述第一驱动器被设置为根据控制器的信号反馈而正反旋转；所述曝气沉砂池的顶部平面上设置有密封盖体，防止臭气逸散。本申请具有排砂效率高、防止臭气逸散和同时实现池底除砂池顶除渣的优点。
This application provides an efficient aerated grit chamber for sand removal, relating to the field of wastewater treatment technology. It includes: a bottom sand discharge pipe installed within the sand collection hopper, laid along the length of the hopper; the bottom sand discharge pipe is configured as a semi-circular or square pipe with an open top; multiple scraper blades are evenly distributed within the bottom sand discharge pipe, configured to move along the length of the pipe to scrape sand particles from the sand collection hopper; the bottom sand discharge pipe is connected to a drive housing via a conveying pipe; a drive gear is installed within the drive housing, connected to a first actuator, which is configured to rotate in both directions based on signal feedback from a controller; a sealing cover is installed on the top surface of the aerated grit chamber to prevent odor escape. This application has the advantages of high sand removal efficiency, prevention of odor escape, and simultaneous bottom sand removal and top slag removal.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to an aeration sand setting tank capable of efficiently discharging sand.
Background
The sewage treatment of sewage treatment plants generally comprises three stages of sewage treatment, namely a sewage pretreatment process section, wherein suspended particles and floating substances in the sewage are mainly removed, the sewage treatment is generally carried out by adopting physical treatment modes such as screening, precipitation and the like, the second stage of sewage treatment, namely a biochemical treatment process section, is mainly used for removing organic pollutants dissolved in the sewage and in a colloid state, is generally carried out by adopting a chemical or biological treatment method, and the third stage of sewage treatment, namely an advanced treatment process section, is mainly used for further treating organic matters, nitrogen, phosphorus and other nutrients which are difficult to degrade, and is usually carried out by adopting flocculation precipitation, physical filtration, ion exchange, ultrafiltration disinfection and the like.
The sand setting tank belongs to a pretreatment process section, is arranged behind a sewage treatment fine grid machine and in front of a biochemical treatment tank, and mainly separates larger sand grains in sewage from the sewage, reduces the load of the sedimentation tank, protects a water pump unit of the subsequent sewage treatment tank from abrasion, has various forms, is provided with an aeration pipe on one longitudinal side of a tank body, controls the rotation speed of water flow by adjusting the aeration amount, improves the stability of sand setting, cleans organic matters on the sand grain surface by aeration, and ensures that the sand setting is clean and easy to treat.
The common aeration sand basin generally adopts a bridge type sand sucker for sand discharge, the bridge type sand sucker is more frequently damaged and maintained, the top of part of the aeration sand basin is often provided with a deodorizing and sealing device, the gap between the aeration sand basin and the deodorizing and sealing device is increased due to the reciprocating motion of the bridge type sand sucker, so that the sealing performance is reduced, odor is leaked into the environment, and in addition, the sand water content discharged by sand sucking equipment is higher, the sand sucking efficiency is low, and the energy consumption is high. Therefore, a high-efficiency sand removal aeration grit chamber with high sand removal efficiency, low water content, odor dissipation prevention and simultaneous realization of bottom sand removal and top slag removal is needed, which is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide an aeration sand setting tank capable of efficiently discharging sand.
Embodiments of the present invention are implemented as follows:
The invention provides an aeration sand setting tank capable of efficiently discharging sand, which comprises a first slope and a second slope, wherein the first slope is arranged above the second slope, a sand collecting hopper is arranged below the second slope, the sand collecting hopper is arranged at the bottom of the aeration sand setting tank, a tank bottom sand discharging pipe is arranged in the sand collecting hopper, the tank bottom sand discharging pipe is paved along the length direction of the sand collecting hopper, the tank bottom sand discharging pipe is arranged as a semicircular pipe with an open top or a square pipe with an open top, a plurality of sand scraping plates are uniformly distributed in the tank bottom sand discharging pipe and are arranged to move along the length direction of the tank bottom sand discharging pipe so as to scrape sand grains in the sand collecting hopper, the tank bottom sand discharging pipe is connected with a driving box body through a conveying pipe, a driving gear is arranged in the driving box body and is connected with a first driver, the first driver is arranged to rotate according to signal feedback of a controller, and an odor emission prevention cover is arranged on the top of the aeration sand setting tank.
In a preferred embodiment of the invention, the first driver is provided with a torque sensor, the torque sensor is electrically connected with the controller, the torque sensor transmits the currently detected torque value to the controller in real time, the controller is provided with a torque threshold, and when the torque detected by the torque sensor reaches the set torque threshold, the controller controls the first driver to reversely rotate by a preset angle and then rotate forward again.
In a preferred embodiment of the invention, a skimming pipe is arranged in the upper space of the scum zone of the aeration grit chamber, and the skimming pipe is arranged to rotate positively and negatively according to the driving of the driving unit so as to skim the scum in the aeration grit chamber in two directions.
In a preferred embodiment of the invention, a deslagging pipe is arranged in the skimming pipe, the deslagging pipe and the skimming pipe are coaxially arranged, the deslagging pipe is arranged as a semicircular pipe with an open top or a square pipe with an open top, a plurality of sand scraping plates are uniformly distributed in the deslagging pipe, and the sand scraping plates are arranged to move along the length direction of the deslagging pipe so as to scrape scum in the skimming pipe.
According to a preferred embodiment of the invention, a slag discharging channel is arranged in the aeration sand setting tank, a slag discharging pipe is arranged at the bottom of the slag discharging channel, the slag discharging pipe is arranged along the length direction of the aeration sand setting tank, the slag discharging pipe is arranged above the slag discharging channel, a slag discharging port is arranged below the slag discharging pipe, and scum in the slag discharging pipe is discharged into the slag discharging channel along the slag discharging port.
In a preferred embodiment of the invention, the driving box body is communicated with the sand discharge hopper, the lowest point of the sand discharge hopper is lower than the lowest point of the driving box body, the sand discharge hopper is provided with an inclined wall, the sand deposit in the driving box body falls into the driving box body, and the bottom end of the sand discharge hopper is provided with a sand discharge pipe.
In a preferred embodiment of the present invention, the sand discharge pipe is provided with an electric knife gate valve, the electric knife gate valve is opened after the first driver is opened for a predetermined time, and the electric knife gate valve is closed after the first driver is closed and stopped for a predetermined time.
In a preferred embodiment of the invention, a flushing pipe is arranged above the aeration grit chamber, a plurality of flushing spray heads are uniformly distributed on the flushing pipe, and the flushing spray heads are arranged above the skimming pipe and the deslagging well.
In a preferred embodiment of the present invention, the flushing pipe is provided with an electrically operated valve, which is electrically connected to a controller, and which is arranged to be opened or closed in synchronization with the first driver.
According to the preferred specific embodiment of the invention, the sand discharging pipe at the bottom of the tank, the conveying pipe, the deslagging pipe, the driving box body, the connecting pipe and the steering gear are sequentially connected end to form a conveying pipe chain, sand scraping plates and chains are arranged in the conveying pipe chain at intervals, and the driving gear is clamped on the chains and drives the sand scraping plates to move circumferentially along the conveying pipe chain.
The beneficial effects of the invention are as follows:
1. the first slope is positioned above the second slope, the inclination angle of the first slope is smaller than that of the second slope, a sand collecting hopper is arranged below the second slope, a bottom sand discharging pipe is arranged in the sand collecting hopper, the bottom sand discharging pipe is paved along the length direction of the sand collecting hopper, the bottom sand discharging pipe is arranged as a semicircular pipe with an open top or a square pipe with an open top, so that settled sand in an aeration sand settling tank falls into the bottom sand discharging pipe under the action of aeration gas, a plurality of scraping plates are uniformly distributed in the bottom sand discharging pipe and are arranged to move along the length direction of the bottom sand discharging pipe so as to scrape sand in the sand collecting hopper, and the bottom sand discharging pipe is connected with a driving box body through a conveying pipe.
2. The upper space of the scum area of the aeration grit chamber is provided with a skimming pipe which is arranged to rotate positively and negatively according to the driving of a driving unit so as to skim scum in the scum area of the aeration grit chamber in two directions, the skimming pipe is internally provided with a deslagging pipe which is coaxially arranged with the skimming pipe, the deslagging pipe is arranged as a semicircular pipe with an open top or a square pipe with an open top, a plurality of sand scraping plates are uniformly distributed in the deslagging pipe, the sand scraping plates are arranged to move along the length direction of the deslagging pipe so as to scrape scum in the skimming pipe, and the movement direction of the sand scraping plates arranged in the sand discharging pipe at the bottom of the tank is opposite to that of the sand scraping plates arranged in the skimming pipe, and meanwhile, the sand removal at the bottom of the tank and the top of the tank are realized;
3. the top plane of the aeration grit chamber is provided with a sealing cover body, so that the sealing effect is good, and odor is prevented from escaping;
4. The sand discharge pipe at the bottom of the pool is connected with the drive box body through the conveying pipe, be provided with drive gear in the drive box body, drive gear with first driver is connected, first driver is set up and is rotated forward and backward according to the signal feedback of controller, be provided with torque sensor on the first driver, torque sensor with the controller electricity is connected, torque sensor will be detected the moment of torsion numerical value real time transmission extremely the controller, the controller is provided with the moment of torsion threshold value, works as when torque sensor detects the moment of torsion reaches the moment of torsion threshold value of settlement, the controller control behind the reverse rotation predetermined angle of first driver, forward rotation once more prevents to lead to the moment of torsion too big and burn out the motor because of sand block the sand scraper, reduces the damage probability of equipment, improves the life of equipment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an overall schematic diagram of an aeration grit chamber for efficient grit removal of the present invention;
FIG. 2 is a schematic diagram of the internal structure of an aeration grit chamber for efficient grit removal of the present invention;
FIG. 3 is a schematic top view showing the internal structure of an aeration grit chamber for efficient grit removal of the present invention;
FIG. 4 is a schematic diagram of a skimming tube structure of an aeration grit chamber for efficient grit removal in accordance with the present invention;
FIG. 5 is a schematic diagram of a skimmer tube driving unit of an aerated grit chamber for efficient grit removal in accordance with the present invention;
FIG. 6 is a schematic diagram of a conveying pipe chain of an aeration grit chamber for efficient grit removal in accordance with the present invention;
FIG. 7 is a schematic diagram of the internal structure of a conveying pipe chain of the high-efficiency sand-discharging aeration grit chamber;
FIG. 8 is a schematic sectional view of a driving box of the aeration grit chamber for efficient grit removal of the present invention.
Reference numerals:
1. The device comprises a tank bottom sand discharging pipe, 2, a steering gear, 3, a conveying pipe, 4, a driving box body, 5, a sand discharging hopper, 6, a sand discharging pipe, 7, an electric knife gate valve, 8, a driving unit, 9, a skimming pipe, 10, a supporting plate, 11, a deslagging pipe, 12, a flushing nozzle, 13, a flushing pipe, 14, an electric valve, 15, a deslagging channel, 16, a blow-off valve, 17, a blow-off pipe, 18, a water outlet pipe, 19, a first driver, 20, a water outlet well, 21, a first slope, 22, a second slope, 23, a torque sensor, 24, a sand scraping plate, 25, a chain, 26, a driving gear, 27, a sleeve, 28, a clamping ring, 29, a second driver, 30, a driving rod, 31, a deslagging port, 32 and a deslagging pipe.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The application provides an aeration sand setting tank capable of efficiently discharging sand, which aims to solve the technical problems that odor in the aeration sand setting tank escapes when the existing aeration sand setting tank discharges sand by adopting a bridge type sand sucker, the sand sucking efficiency of the bridge type sand sucker is low, and the sand discharge and deslagging cannot be synchronously realized.
The embodiment provides an aeration sand setting pond of high-efficient sediment outflow, refer to fig. 1 through 8, include, with reference to fig. 3, first slope 21 and second slope 22, first slope 21 is located the top of second slope 22, the inclination of first slope 21 is less than the inclination of second slope 22, the below of second slope 22 is provided with the sand collecting hopper, the sand collecting hopper sets up in the bottom of aeration sand setting pond to when sand grain or great particulate matter slide along the slope, have great kinetic energy can slide the bottom of aeration sand setting pond.
A water inlet is arranged above one side wall of the aeration grit chamber and is mechanically communicated with the fine grid.
The aeration grit chamber is characterized in that aeration pipes are arranged in the length direction of the chamber body of the aeration grit chamber, a plurality of aeration holes are uniformly distributed on the aeration pipes, sewage flows forwards along the spiral direction of the chamber body through microporous aeration, and the aeration quantity is regulated to enable the sewage to have constant flow rate, so that the flow rate of the sewage is not changed due to flow change. In addition, the aeration quantity is regulated to control the rotation speed of water flow, so that the aeration sand basin has stable sand removal rate, and organic matters on the sand grain surface can be effectively separated through aeration, so that sand grains deposited at the bottom of the aeration sand basin are clean and easy to treat.
The sand collecting hopper is provided with a vertical groove wall, sand grains or larger particles can fall into the sand collecting hopper, a bottom sand discharging pipe 1 is arranged in the sand collecting hopper, the bottom sand discharging pipe 1 is abutted with the sand collecting hopper, the bottom sand discharging pipe 1 is paved along the length direction of the sand collecting hopper, and the bottom sand discharging pipe 1 is arranged into a semicircular pipe with an open top or a square pipe with an open top, so that sand grains or larger particles in the aeration sand setting tank can fall into the sand collecting hopper.
A plurality of scraping plates 24 are uniformly distributed in the bottom sand discharge pipe 1, and referring to fig. 3 and 6, the scraping plates 24 are arranged to move along the length direction of the bottom sand discharge pipe 1, and the outer contour of the scraping plates 24 is matched with the inner contour of the bottom sand discharge pipe 1 so as to scrape sand grains in a sand collecting hopper.
The bottom of the pool sand discharging pipe 1 is connected with the driving box body 4 through the conveying pipe 3, the conveying pipe 3 and the bottom of the pool sand discharging pipe 1 are integrally formed, the inner outline and the outer outline of the conveying pipe 3 are matched with the inner outline and the outer outline of the bottom of the pool sand discharging pipe 1, the conveying pipe 3 is connected with the driving box body 4, the upper space of the conveying pipe 3 is higher than the liquid level of the aeration sand basin, the driving box body 4 is arranged at the top of the conveying pipe 3, and sewage in the aeration sand basin is prevented from flowing back to the driving box body 4.
The driving box 4 is internally provided with a driving gear 26, referring to fig. 7, the driving gear 26 is connected with the first driver 19, the first driver 19 is configured to rotate positively and negatively according to signal feedback of a controller, the first driver 19 is provided with a torque sensor 23, the torque sensor 23 is electrically connected with the controller, and the torque sensor 23 detects the current torsion moment of the driving gear 26 in real time and transmits the current detected torque value to the controller in real time.
Specifically, in this embodiment, the torque sensor 23 is configured as a strain gauge type torque sensor, referring to fig. 1 and 3, the strain gauge is attached to the stress shaft, when the stress shaft is deformed by an external force, the strain gauge is synchronously deformed, and the elastic deformation of the strain gauge causes the resistance value of the strain gauge to change, so that the voltage at two ends of the strain gauge is changed, and further the torque value at two ends of the strain gauge is obtained.
The controller is provided with a torque threshold, when the torque detected by the torque sensor 23 reaches the set torque threshold, the controller controls the first driver 19 to reversely rotate for a preset angle and then rotate forward again, so that the sand in the sand discharging pipe 1 at the bottom of the pond is prevented from sliding into the gap between the sand scraping plate 24 and the sand discharging pipe 1 at the bottom of the pond, and the motor is prevented from being burnt due to overlarge torque.
Specifically, the controller is provided with a comparator, the comparator compares the torque value currently detected by the strain gauge with a torque threshold set by the controller, if the torque value currently detected by the torque sensor 23 reaches the set torque threshold, the controller controls the first driver 19 to reversely rotate by a preset angle, the preset angle is 90 degrees, 180 degrees or 360 degrees, and the first driver 19 reversely rotates by a preset angle and then rotates forward again.
If the first driver 19 rotates forward after rotating backward by a predetermined angle, the torque detected by the torque sensor 23 is still greater than the set torque threshold, and the controller controls the first driver 19 to continue rotating backward by a predetermined angle until the torque detected by the torque sensor 23 is within the set torque threshold.
And a buzzer is further arranged on the controller, if the torque detected by the torque sensor 23 is larger than a set torque threshold value when the first driver 19 rotates forwards and rotates reversely, the controller controls the buzzer to give out alarm sound, and the controller controls the first driver 19 to be closed, so that the motor is prevented from being burnt due to overlarge torque.
One end of the bottom sand discharge pipe 1 is communicated with the conveying pipe 3, referring to fig. 6, the other end of the bottom sand discharge pipe 1 is connected with the steering gear 2, a steering gear is arranged in the steering gear 2 and is rotationally connected in the steering gear 2 through a rotating shaft, a plurality of pointed teeth which are convexly arranged are uniformly distributed on the rotating gear, the pointed teeth are clamped in gaps of the chain 25, and the horizontal movement of the sand scraping plate 24 is converted into the inclined movement in the vertical direction.
The upper space of the scum area of the aeration grit chamber is also provided with a skimming tube 9, and referring to fig. 2 to 4, the skimming tube 9 is internally provided with a deslagging tube 11, the deslagging tube 11 and the skimming tube 9 are coaxially arranged, and the deslagging tube 11 removes scum in the skimming tube 9.
One end of the deslagging pipe 11 is connected with the driving box 4 through an elbow joint, the other end of the deslagging pipe 11 is connected with the steering gear 2, a steering gear is arranged in the steering gear 2 and is rotationally connected in the steering gear 2 through a rotating shaft, a plurality of pointed teeth which are convexly arranged are uniformly distributed on the rotating gear and are clamped in gaps of the chain 25 to convert horizontal movement of the sand scraping plate 24 into vertical oblique movement, the steering gear 2 connected with the deslagging pipe 11 and the steering gear 2 connected with the sand discharging pipe 1 at the bottom of the pond are symmetrically arranged, the two steering gears 2 which are symmetrically arranged are connected through connecting pipes, and the inner contour and the outer contour of the connecting pipes are matched with the inner contour and the outer contour of the sand discharging pipe 1 at the bottom of the pond.
The sand removing pipe 1, the conveying pipe 3, the deslagging pipe 11, the connecting pipe, the steering gear 2 and the driving box 4 are sequentially connected end to form a conveying pipe chain, a chain 25 and a sand scraping plate 24 are arranged in the conveying pipe chain at intervals, the driving gear 26 is clamped on the chain 25 and drives the sand scraping plate 24 to linearly or obliquely move along the conveying pipe 3, the sand scraping plate 24 arranged in the deslagging pipe 11 and the sand scraping plate 24 arranged in the sand removing pipe 1 at the bottom of the tank have a trend of reverse movement, so that sand removing at the bottom of the tank and deslagging at the top of the tank are synchronously realized, and the sand removing efficiency is high.
The diverter 2 and the driving box 4 are arranged in the outer space of the tank body of the aeration sand basin, equipment is convenient to check and maintain, and the upper parts of the scum area and the pipeline of the bottom sand discharge area are arranged to be open, so that scum and sand can enter the pipeline and be scraped by the sand scraping plate, the observation is convenient, and when the equipment needs to be maintained, the equipment can be maintained without stopping water.
The section of the conveying pipeline chain is square or round, the sand scraping plate 24 is square or round matched with the conveying pipeline, and the tops of the bottom sand discharging pipe 1 and the slag removing pipe 11 forming the conveying pipeline chain are both open so as to discharge scum and sand setting.
In addition, the conveying pipe chain can be customized and generated according to the three-dimensional space size of the existing aeration sand basin, so that three-dimensional space arrangement is realized, and the conveying pipe chain is used for project transformation of the existing aeration sand basin or installation of sand removal and slag removal integrated projects of a newly built aeration sand basin.
Preferably, the diverter 2 communicated with the bottom sand discharge pipe 1 is provided with a blow-down pipe 17, and the blow-down pipe 17 is used for discharging sewage in the aeration sand basin when the aeration sand basin needs to be emptied. The blow-down pipe 17 is provided with a blow-down valve 16, the blow-down valve 16 is provided with a gate valve, and water in the aeration grit chamber can be regulated and controlled to flow out of the blow-down pipe 17 and enter a factory drainage pipe network by manually opening the gate valve.
The top plane of the aeration grit chamber is provided with a sealing cover body, and referring to figure 1, the sealing cover body is buckled on the top plane of the aeration grit chamber to prevent odor from escaping, preferably, the lower part of the sealing cover body is provided with a sealing ring which is abutted with the top plane of the aeration grit chamber to improve the sealing performance of the aeration grit chamber.
The upper space of the scum area of the aeration grit chamber is provided with a skimming tube 9, referring to fig. 2, 3 and 4, the skimming tube 9 is rotatably connected in a slag discharging channel 15, the tail end of the slag discharging channel 15 is provided with a sleeve 27, the sleeve 27 is rotatably connected with the skimming tube 9, the skimming tube 9 is provided with a thin-wall cylinder tube, and the top of the skimming tube 9 is provided with interval openings, so that the strength requirement of the skimming tube 9 can be met, and scum in the aeration grit chamber can be skimmed.
The skimming tube 9 is configured to rotate forward and backward according to driving of a driving unit to skim scum in the aeration grit chamber, specifically, the driving unit 8 comprises a second driver 29, a pair of gears meshed with each other are arranged on the second driver 29, a driving rod 30 is arranged on one of the gears in a penetrating manner, external threads are arranged in an upper space of the driving rod 30, internal threads matched with the driving rod are arranged on the gears, the driving rod 30 is configured to move up and down according to rotation of the gears, the other gear is fixedly arranged on an output shaft of the second driver 29, and after the second driver 29 is started, the gears meshed with each other and arranged on the second driver 29 rotate synchronously to drive the driving rod 30 penetrating through the gears to move up and down.
The lower part of the driving rod 30 is provided with a convex block, referring to fig. 5, the convex block is hinged with the clamping ring 28, the clamping ring 28 is fixedly connected with the skimming tube 9, the skimming tube 9 is rotationally connected with the aeration grit chamber, and the skimming tube 9 rotates positively and negatively according to the up-and-down movement of the driving rod 30, so that the scum in the aeration grit chamber is skimmed in two directions, and the skimming efficiency is high.
Preferably, a hand wheel is arranged above the driving rod 30, and the forward and reverse rotation of the hand wheel can also control the forward and reverse rotation of the skimming tube 9, so that the skimming of the scum in the aeration grit chamber is manually controlled.
The aeration grit chamber is also provided with a plurality of support plates 10, and the support plates 10 are provided with through holes matched with the skimming tubes 9 to assist in supporting the skimming tubes 9.
The skimming tube 9 is internally provided with a deslagging tube 11, referring to fig. 2 and 3, the deslagging tube 11 and the skimming tube 9 are coaxially arranged, the deslagging tube 11 is arranged as a semicircular tube with an open top or a square tube with an open top, a plurality of sand scraping plates 24 are uniformly distributed in the deslagging tube 11, the sand scraping plates 24 are arranged to move along the length direction of the deslagging tube 11 so as to scrape scum in the skimming tube 9, the sand scraping plates 24 arranged on the deslagging tube 11 and the sand scraping plates 24 arranged on the bottom sand discharging tube 1 move in opposite directions, and accordingly, when the first driver 19 is started, settled sand in the bottom sand discharging tube 1 and scum in the deslagging tube 11 are synchronously discharged.
Preferably, a slag discharging channel 15 is arranged in the aeration sand basin, a slag discharging pipe 32 is arranged at the bottom of the slag discharging channel 15, the slag discharging pipe 11 is arranged along the length direction of the aeration sand basin, the slag discharging pipe 11 is arranged above the slag discharging channel 15, a slag discharging port 31 is arranged below the slag discharging pipe 11, the slag discharging port 31 is opposite to the slag discharging channel 15, and scum in the scum skimming pipe 9 is discharged into the slag discharging channel 15 along the slag discharging port 31 and finally discharged from the slag discharging pipe 32.
The aeration sand basin is characterized in that a water outlet well 20 is further arranged in the aeration sand basin, the water outlet well 20 is arranged on one side far away from the driving box body 4, one side wall of the water outlet well 20 is lower than the outer wall of the aeration sand basin, sewage treated by the aeration sand basin flows to the water outlet well 20, a water outlet pipe 18 is arranged below the water outlet well 20, and water in the water outlet well 20 is discharged through the water outlet pipe 18.
One end of the driving box body 4 is communicated with the conveying pipe 3, a sand discharge hopper 5 is further communicated with the driving box body 4, referring to fig. 8, a sand discharge pipe 6 is arranged at the bottommost end of the sand discharge hopper 5, the sand discharge pipe 6 is vertically arranged and discharges the sand which falls into the sand discharge hopper 5, preferably, the sand discharge hopper 5 is provided with an inclined wall which is arranged at an acute angle with the horizontal direction, the lowest point of the sand discharge hopper 5 is lower than the lowest point of the driving box body 4, further, the sand which is conveyed by a sand scraping plate 24 in the conveying pipe 3 directly falls into the sand discharge hopper 5 and is discharged along the sand discharge pipe 6, the sand scraping plate 24 automatically realizes sand-water separation in the lifting process of the conveying pipe 3, the water content of the discharged sand is low, a sand-water separator is not needed for secondary separation, the sand discharge efficiency is high, and the energy consumption of the sand discharge is reduced.
The outlet of the sand discharge pipe 6 is connected with a sand sedimentation collector to collect the sand sedimentation discharged from the aeration sand basin.
Preferably, the sand discharge pipe 6 is provided with an electric knife gate valve 7, the electric knife gate valve 7 is electrically connected with the controller, the electric knife gate valve 7 is set to be opened after the first driver 19 is opened and rotated for a preset time, and the electric knife gate valve 7 is closed after the first driver 19 is closed and stopped for a preset time.
The predetermined time is the ratio of the length of the bottom sand discharging pipe 1 to the driving box 4 to the moving speed of the sand scraping plate 24.
The electric knife gate valve 7 comprises a gate plate, a shell, a screw and a driving motor, wherein two ends of the shell are respectively connected with the sand discharge pipe 6, the shell is provided with a cavity for the gate plate to pass through, the gate plate is slidably connected in the cavity, the other end of the gate plate is rotationally connected with the screw, an output shaft of the driving motor is connected with a pair of bevel gears meshed with each other, the screw penetrates through one of the bevel gears, a threaded hole matched with the screw is formed in the bevel gears, the screw is sleeved in the threaded hole, the gate plate is arranged to open the sand discharge pipe or close the sand discharge pipe 6 according to positive and negative rotation of the driving motor, the driving motor is electrically connected with the controller, and the driving motor is arranged to rotate positively and negatively according to signals of the controller.
Preferably, the electric knife gate valve 7 is further provided with a switch in-place sensor for detecting the in-place opening and closing of the electric knife gate valve 7.
The top of aeration grit chamber is provided with wash pipe 13, referring to fig. 1 and 2, a plurality of shower nozzles 12 have been evenly distributed on the wash pipe 13, shower nozzles 12 arrange in the top of skimming pipe 9 and water outlet well 20, wash deslagging pipe 11, avoid dross and other fibrous material to adhere to.
The electric valve 14 is arranged on the flushing pipe 13, the electric valve 14 is provided with an in-place opening sensor and an in-place closing sensor, the electric valve 14 is electrically connected with a controller, and the electric valve 14 is synchronously opened or synchronously closed with the first driver 19 so as to remove scum and other fiber substances attached to the surfaces of the deslagging pipe 11 and the skimming pipe 9.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides an aeration grit chamber of high-efficient sediment outflow, includes first slope (21) and second slope (22), first slope (21) are located the top of second slope (22), the below of second slope (22) is provided with the sand collecting hopper, the sand collecting hopper sets up in the bottom of aeration grit chamber, characterized in that, be provided with bottom of the pool sediment outflow pipe (1) in the sand collecting hopper, just bottom of the pool sediment outflow pipe (1) are followed the length direction of sand collecting hopper lays, bottom of the pool sediment outflow pipe (1) are set up to open semicircle pipe in top or open square tube in top, equipartition has a plurality of scraping plates (24) in bottom of the pool sediment outflow pipe (1), scraping plates (24) are set up to follow bottom of the pool sediment outflow pipe (1) length direction removes, in order to scrape the sand in the sand collecting hopper; the bottom sand discharge pipe (1) is connected with a driving box body (4) through a conveying pipe (3), a driving gear (26) is arranged in the driving box body (4), the driving gear (26) is connected with a first driver (19), the first driver (19) is arranged to rotate positively and negatively according to signal feedback of a controller, a sealing cover body is arranged on the top plane of the aeration sand basin to prevent odor from escaping, a skimming pipe (9) is arranged in the upper space of a scum area of the aeration sand basin, the skimming pipe (9) is arranged to rotate positively and negatively according to driving of a driving unit, the device comprises a slag skimming pipe (9), wherein a slag skimming pipe (11) is arranged in the slag skimming pipe (9), the slag skimming pipe (11) and the slag skimming pipe (9) are coaxially arranged, the slag skimming pipe (11) is arranged to be a semicircular pipe with an open top or a square pipe with an open top, a plurality of sand scraping plates (24) are uniformly distributed in the slag skimming pipe (11), and the sand scraping plates (24) are arranged to move along the length direction of the slag skimming pipe (11) so as to scrape the slag in the slag skimming pipe (9).
2. An aeration grit chamber for efficient grit removal as in claim 1 wherein a torque sensor (23) is provided on said first drive (19), said torque sensor (23) is electrically connected to said controller, said torque sensor (23) transmits a currently detected torque value to said controller in real time, said controller is provided with a torque threshold, and said controller controls said first drive (19) to rotate forward again after a reverse rotation by a predetermined angle when the torque detected by said torque sensor (23) reaches a set torque threshold.
3. The high-efficiency sand-discharging aeration sand-setting pond according to claim 1, wherein a slag discharging channel (15) is arranged in the aeration sand-setting pond, a slag discharging pipe (32) is arranged at the bottom of the slag discharging channel (15), the slag discharging pipe (11) is arranged along the length direction of the aeration sand-setting pond, the slag discharging pipe (11) is arranged above the slag discharging channel (15), a slag discharging opening (31) is arranged below the slag discharging pipe (11), and scum in the slag skimming pipe (9) is discharged into the slag discharging channel (15) along the slag discharging opening (31).
4. The high-efficiency sand-discharging aeration sand-settling pond according to claim 1, wherein the driving box body (4) is communicated with a sand-discharging hopper (5), the lowest point of the sand-discharging hopper (5) is lower than the lowest point of the driving box body (4), the sand-discharging hopper (5) is provided with an inclined wall, sand settled in the driving box body (4) falls into the driving box body (4), and a sand-discharging pipe (6) is arranged at the bottommost end of the sand-discharging hopper (5).
5. The high-efficiency sand-discharging aeration grit chamber of claim 4, wherein the sand-discharging pipe (6) is provided with an electric knife gate valve (7), the electric knife gate valve (7) is opened after the electric knife gate valve (7) is opened according to the first driver (19) for a preset time, and the electric knife gate valve (7) is closed after the first driver (19) is closed and stopped for a preset time.
6. The high-efficiency sand-discharging aeration sand-setting tank as claimed in claim 1, wherein a flushing pipe (13) is arranged above the aeration sand-setting tank, a plurality of flushing spray heads (12) are uniformly distributed on the flushing pipe (13), and the flushing spray heads (12) are arranged above the skimming pipe (9) and the water outlet well (20).
7. An aerated grit chamber with efficient grit removal as in claim 6, wherein said flushing pipe (13) is provided with an electrically operated valve (14), said electrically operated valve (14) being electrically connected to a controller, said electrically operated valve (14) being arranged to be opened or closed in synchronization with said first driver (19).
8. The high-efficiency sand discharge aeration grit chamber of claim 1, wherein the bottom sand discharge pipe (1), the conveying pipe (3), the deslagging pipe (11), the driving box body (4), the connecting pipe and the steering gear (2) are sequentially connected end to form a conveying pipe chain, sand scraping plates (24) and chains (25) are arranged in the conveying pipe chain at intervals, and the driving gear (26) is clamped on the chains (25) and drives the sand scraping plates (24) to move circumferentially along the conveying pipe chain.
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| CN202410104270.0A CN117735742B (en) | 2024-01-25 | 2024-01-25 | An aerated grit chamber for efficient sand removal |
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| CN202410104270.0A CN117735742B (en) | 2024-01-25 | 2024-01-25 | An aerated grit chamber for efficient sand removal |
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| CN117735742A CN117735742A (en) | 2024-03-22 |
| CN117735742B true CN117735742B (en) | 2026-02-17 |
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| CN120247256B (en) * | 2025-06-05 | 2025-11-14 | 北京恒润慧创环境技术有限公司 | A sand removal system for hydrolysis acidification tank |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203663509U (en) * | 2013-11-29 | 2014-06-25 | 博天环境集团股份有限公司 | Aerated grit chamber capable of being sealed entirely |
| CN217322102U (en) * | 2022-05-13 | 2022-08-30 | 山东德沃环保科技有限公司 | Scraper conveyor |
| CN117427378A (en) * | 2023-11-16 | 2024-01-23 | 苏州工业园区清源华衍水务有限公司 | Sand removing device and method for aeration sand basin |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105692737A (en) * | 2016-04-21 | 2016-06-22 | 上海市城市建设设计研究总院 | Aerated grit chamber with integrated functions of grit removing, skimming and oil removing |
| CN218740389U (en) * | 2022-10-18 | 2023-03-28 | 安徽欧石环保科技有限公司 | Sewage sedimentation tank |
| CN116672763B (en) * | 2023-07-12 | 2024-02-13 | 广州科学城水务投资集团有限公司 | Aeration spiral-flow type sewage treatment grit chamber |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203663509U (en) * | 2013-11-29 | 2014-06-25 | 博天环境集团股份有限公司 | Aerated grit chamber capable of being sealed entirely |
| CN217322102U (en) * | 2022-05-13 | 2022-08-30 | 山东德沃环保科技有限公司 | Scraper conveyor |
| CN117427378A (en) * | 2023-11-16 | 2024-01-23 | 苏州工业园区清源华衍水务有限公司 | Sand removing device and method for aeration sand basin |
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