CN113617074A - High-efficient aeration grit chamber with scrape sediment function - Google Patents
High-efficient aeration grit chamber with scrape sediment function Download PDFInfo
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- CN113617074A CN113617074A CN202110928678.6A CN202110928678A CN113617074A CN 113617074 A CN113617074 A CN 113617074A CN 202110928678 A CN202110928678 A CN 202110928678A CN 113617074 A CN113617074 A CN 113617074A
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- grit chamber
- aeration
- chamber body
- silt
- sand
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
- B01D21/265—Separation of sediment aided by centrifugal force or centripetal force by using a vortex inducer or vortex guide, e.g. coil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/245—Discharge mechanisms for the sediments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
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- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
The invention discloses a high-efficiency aeration grit chamber with a slag scraping function, which comprises a grit chamber body constructed by mirroring, wherein a sand accumulation channel distributed close to the inner wall of one side of the grit chamber body is preset at the bottom of the grit chamber body, and aeration pipeline systems are respectively arranged on the walls and the bottom of the grit chamber body at two opposite sides and used for enabling liquid in the two grit chamber bodies to flow from the wall far away from one side of the grit chamber body to the wall of the adjacent side of the grit chamber body so as to enable silt to be precipitated into the sand accumulation channel; the top of the two grit chamber bodies is provided with a gantry moving frame. The efficient aeration grit chamber with the slag scraping function changes the mode of cleaning crude mechanical silt, improves the original aeration pipeline, enables liquid to form water flow vortex under the cooperation of all aeration units, improves the aeration effect, accelerates the mixing of the liquid with the medicament, enables the silt to sink intensively, treats the settled silt in the aeration process, reduces the requirement on mechanical performance and reduces energy consumption.
Description
Technical Field
The invention relates to a grit chamber, in particular to a high-efficiency aeration grit chamber with a slag scraping function.
Background
The aeration grit chamber makes the silt in the liquid in the grit chamber deposit on the bottom of the tank by using an aeration mode.
According to patent No. CN201510882312.4, a slag scraping device of an aeration grit chamber is disclosed, which comprises a scraping plate, a slag scraping arm, a traveling gear, a driving shaft, a driven shaft, a fixed chain, a driving shaft chute and a driven shaft chute; the scraper, the slag scraping arm, the traveling gear, the driving shaft and the driven shaft form a moving part of the slag scraping device; the fixed chain, the driving shaft sliding groove and the driven shaft sliding groove form a fixed part of the slag scraping device. The scraper blade is arranged on the slag scraping arm, and the installation height and the angle can be adjusted according to the requirement. The slag scraping arm is connected with the driving shaft and the driven shaft. The walking gear is installed on the driving shaft and moves on the fixed chain by rotating along with the driving shaft.
The above patent provides a way of cleaning the silt inside the grit chamber. This treatment method does not specify whether cleaning is performed after the grit chamber is stopped or during the operation. The scraping mode depends on a pure mechanical structure to scrape the silt in the grit chamber, the kinetic energy consumption is high, the scraping effect of the rough scraping mode is limited inevitably, and the rough scraping mode is subject to the weight of accumulated silt, so that the device provided by the invention is damaged to a certain extent along with the strong resistance of accumulated silt when the silt is scraped, and the structure needs to be repaired and checked regularly.
Disclosure of Invention
The invention aims to provide a high-efficiency aeration grit chamber with a slag scraping function, which is used for cleaning silt in an aeration process and avoiding the problems of inconvenience in centralized treatment of the silt after sedimentation and high energy consumption.
In order to achieve the above purpose, the invention provides the following technical scheme: a high-efficiency aeration grit chamber with a slag scraping function comprises a grit chamber body which is constructed in a mirror image mode, wherein a sand accumulation channel which is distributed close to the inner wall of one side of the grit chamber body is preset at the bottom of the grit chamber body, aeration pipeline systems are respectively installed on the walls and the bottom of the two opposite sides of the grit chamber body and are used for enabling liquid in the two grit chamber bodies to flow to the adjacent wall from the wall far from the one side of the grit chamber body so as to enable silt to be precipitated into the sand accumulation channel;
two the gantry moving frame is installed at the top of grit chamber body, install on the gantry moving frame:
the submerged sucker assembly extends to the bottom of the sand accumulating channel;
the thread feeding mechanism, the formula sucking disc subassembly that sinks be used for with long-pending husky transmission in the long-pending husky ditch extremely in the thread feeding mechanism, thread feeding mechanism is used for shifting silt.
Preferably, the bottom of the grit chamber body is provided with an inclined part, the inclined part is inclined towards the sand accumulation channel from the chamber wall far away from the sand accumulation channel, and the inclined angle is 0.3-0.5 degrees.
Preferably, the aeration pipeline system comprises a first main air pipe, a second main air pipe and a third main air pipe;
the first main air pipe and the third main air pipe are arranged on the tank wall on one side opposite to the two grit chamber bodies and are communicated with a first air pipe pre-embedded in the tank wall, the first aeration pipes distributed along a linear array are arranged on the tank wall on one side opposite to the two grit chamber bodies, the inclined part is provided with an aeration disc, and the first air pipes are respectively communicated with a plurality of groups of aeration pipes and the aeration disc;
the second main air pipes are arranged on the tank walls on the adjacent sides of the two grit chamber bodies and communicated with second air pipes pre-buried in the tank walls, and the second aeration pipes which are in a linear array and distributed relative to the aeration pipes are arranged on the grit chamber body.
Preferably, an arc-shaped guide part and a blocking part distributed along a central line between the inclined part and the sand accumulating channel are built in the grit chamber body, wherein:
the first aeration pipe is matched with the aeration disc, so that the excited water flow is kept on an inclined phase and is guided to flow along the parabola of the outer wall by the arc-shaped guide part;
the second aeration pipe drives water flow to flow towards the blocking part and is blocked by the blocking part to form a water vortex, and the water vortex attracts so that liquid flowing along a parabola is collected above the sand accumulating channel.
Preferably, the sliding blocks are mounted on the supporting legs on two sides of the gantry moving frame, sliding grooves are formed in the tops of the two grit chamber bodies, threaded rods are arranged in the sliding grooves, the sliding blocks are arranged in the sliding grooves in a sliding mode and driven by the threaded rods to move, a leather wheel is arranged at one end of each of the two threaded rods, the driving motor further comprises a driving motor, the leather wheel is arranged at the output end of the driving motor, and the leather wheel is connected with the two leather wheels through a belt.
Preferably, the submerged sucker assembly comprises connecting seats, a communicating pipe and a sucker seat, the two connecting seats are mounted on the gantry moving frame, the communicating pipe is mounted on the connecting seats, one end of the communicating pipe is connected with the sucker seat connecting port, the other end of the communicating pipe is communicated with the water pump input end on the connecting seats, and the output end of the water pump is communicated with the thread feeding mechanism.
Preferably, the bottom of the sucker seat is provided with a sand shoveling plate which is arranged in parallel, and the sand shoveling plate and the bottom of the inner side of the sand accumulating channel are arranged.
Preferably, the thread feeding mechanism comprises a feeding barrel, a driving motor and a thread feeding rod, a water filtering tank distributed towards the grit chamber body is formed in the inner wall of the feeding barrel, a filter screen frame is installed at a port of the water filtering tank, a water outlet of the water filtering tank is communicated with a water outlet pipe, the water outlet pipe is located in one of the grit chamber bodies, and the driving motor is used for driving the thread feeding rod to rotate so as to convey silt.
In the technical scheme, the high-efficiency aeration grit chamber with the slag scraping function provided by the invention has the following beneficial effects: this scheme utilizes aeration pipe-line system to make the inside liquid of grit chamber body be located long-pending husky canal top and form the rivers vortex to utilize the vortex principle to make silt concentrate to deposit in long-pending husky canal, then utilize the formula sucking disc subassembly of sinking to sweep the silt in long-pending husky canal channel at the gantry movable frame that utilizes reciprocating motion and inhale, then concentrate the conveying through stating silt in the screw feeding mechanism to liquid, and inside liquid then flows back to this is internal to the grit chamber. Change former rudimental formula machinery silt clearance's mode with this, improve original aeration pipe, make liquid form the rivers vortex under each aeration unit cooperation, not only promoted the aeration effect, with higher speed medicament mixing liquid to make silt can concentrate and sink, handle the silt of sediment at the in-process of aeration, reduced mechanical properties's requirement, reduced the energy consumption.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic overall structure diagram provided in an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of a point A provided in the embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a suction cup seat and a sand shoveling plate according to an embodiment of the present invention;
FIG. 4 is an enlarged schematic view of a point B provided in the present embodiment;
fig. 5 is a schematic structural view of a threaded rod provided in an embodiment of the present invention.
Description of reference numerals:
1. a grit chamber body; 11. an inclined portion; 12. a chute; 13. a threaded rod; 2. accumulating sand in the channel; 3. an aeration pipeline system; 31. a first main air pipe; 32. a second main air pipe; 33. a third main air pipe; 34. a first air pipe; 35. a first aeration pipe; 36. an aeration disc; 37. a second air pipe; 38. a second aeration pipe; 4. a gantry moving frame; 41. a slider; 5. a submerged sucker assembly; 51. a connecting seat; 52. a communicating pipe; 53. a sucker seat; 54. shoveling a sand table; 6. a screw feeding mechanism; 61. a feed cylinder; 611. a water filtering tank; 612. a screen frame; 62. a threaded feed rod; 80. an arc-shaped guide part; 81. a blocking portion.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1-5, a high-efficiency aeration grit chamber with a slag scraping function comprises a grit chamber body 1 constructed by mirror images, a sand accumulation channel 2 distributed close to the inner wall of one side of the grit chamber body 1 is preset at the bottom of the grit chamber body 1, aeration pipeline systems 3 are respectively installed on the walls and the bottom of the grit chamber body 1 at the two opposite sides, and the aeration pipeline systems 3 are used for enabling liquid in the two grit chamber bodies 1 to flow from the wall far away from one side to the wall of the adjacent side so as to enable silt to be precipitated into the sand accumulation channel 2;
the gantry moving frame 4 is installed at the top of the two grit chamber bodies 1, and the gantry moving frame 4 is installed with:
a submerged sucker assembly 5 extending to the bottom of the sand accumulating channel 2;
the thread feeding mechanism 6 and the submerged sucker assembly 5 are used for transmitting accumulated sand in the accumulated sand channel 2 to the thread feeding mechanism 6, and the thread feeding mechanism 6 is used for transferring the sediment.
Specifically, the aeration pipeline system 3 in the above-described embodiment includes a first main air pipe 31, a second main air pipe 32, and a third main air pipe 33. The first main air pipe 31 and the third main air pipe 33 are communicated with the first air pipes 34 which are pre-embedded in the tank walls on the opposite sides of the two grit chamber bodies 1, the first aeration pipes 35 which are distributed along the linear array are arranged on the tank walls on the opposite sides of the two grit chamber bodies 1, the aeration discs 36 are arranged on the inclined part 11, and the first air pipes 34 are respectively communicated with the multiple groups of first aeration pipes 35 and the aeration discs 36. Further, the second main air pipe 32 is installed on the adjacent side wall of the two grit chamber bodies 1 and is communicated with a second air pipe 37 pre-embedded in the wall, and the second aeration pipes 38 which are in a linear array and distributed relative to the aeration pipes 35 are installed on the grit chamber body 1. In this embodiment, an arc guide part 80 and a blocking part 81 distributed along the center line between the inclined part 11 and the sand accumulating channel 2 are built in the grit chamber body 1, wherein: the first aeration pipe 35 and the aeration disc 36 are matched to enable the excited water flow to keep in an inclined phase and to guide the water flow along the parabola of the outer wall at the arc-shaped guide part 80; the second aeration pipe 38 drives the water flow toward the blocking portion 81, and is blocked by the blocking portion 81 to form a water vortex, and the water vortex attracts the liquid flowing along the parabola to collect above the sand collecting channel 2. In short, the solution uses three independent aeration units, namely the first main air pipe 31 and the third main air pipe 33, so that the liquid in the grit chamber body 1 flows in a parabolic direction along the outer wall thereof under the guiding action of the arc-shaped guiding part 80; the second main air pipe 32 drives the liquid tank above the sand accumulating channel 2 to block the blocking part 81 to form a water vortex, and under the drainage of the water vortex, the liquid flowing along the outer wall of the water vortex along the parabola direction is sucked into the water vortex, so that the settled silt can be left in the sand accumulating channel 2.
In the above scheme, utilize aeration pipe-line system 3 to make the inside liquid of grit chamber body 1 be located 2 tops of long-pending husky canal and form the rivers vortex to utilize the vortex principle to make silt concentrate to deposit in long-pending husky canal 2, then utilize heavy water formula sucking disc subassembly 5 to sweep the silt in long-pending husky canal 2 channel at gantry moving frame 4 that utilizes reciprocating motion and inhale, then concentrate the conveying through the silt in screw feeding mechanism 6 to liquid, and inside liquid then flows back to in grit chamber body 1. Change former rudimental formula machinery silt clearance's mode with this, improve original aeration pipe, make liquid form the rivers vortex under each aeration unit cooperation, not only promoted the aeration effect, with higher speed medicament mixing liquid to make silt can concentrate and sink, handle the silt of sediment at the in-process of aeration, reduced mechanical properties's requirement, reduced the energy consumption.
Further, as shown in fig. 1, the bottom of the grit chamber body 1 is provided with an inclined portion 11, and the inclined portion 11 is inclined from the chamber wall on the side far from the sand accumulating channel 2 to the sand accumulating channel 2, and the inclination angle is 0.3 ° to 0.5 °. The water flow direction under the agitation of the aeration disc 36 leans against the arc-shaped guide part 80 to flow in an inclined manner, so that the water flow directly flowing to the arc-shaped guide part 80 under the agitation of the first aeration pipe 35 is driven by the water flow under the agitation of the aeration disc 36 to flow upwards, and the water flow is guided by the water vortex.
As a further technical solution provided by the present invention, as shown in fig. 1 and 4, the sliding blocks 41 are mounted on the supporting legs at both sides of the gantry moving frame 4, the top of the two grit chamber bodies 1 is provided with a chute 12, a threaded rod 13 is disposed in the chute 12, the sliding blocks 41 are slidably disposed in the chute 12 and are driven by the threaded rod 13 to keep moving, one end of each threaded rod 13 is provided with a pulley, and the present invention further comprises a driving motor, the output end of the driving motor is provided with a pulley, and the pulley is connected with the two pulleys through a belt. The belt is used for transmission to drive the rotating direction of the threaded rod 13 to be consistent, so that the gantry moving frame 4 is driven to keep moving along the direction of the sliding groove 12, and the submerged sucker assembly 5 is driven to perform reciprocating cleaning and suction in the sand accumulating channel 2.
In the above scheme, the submerged sucker assembly 5 comprises connecting seats 51, a communicating pipe 52 and a sucker seat 53, the two connecting seats 51 are mounted on the gantry moving frame 4, the communicating pipe 52 is mounted on the connecting seats 51, one end of the communicating pipe is connected with a connector of the sucker seat 53, the other end of the communicating pipe is communicated with the input end of a water pump on the connecting seats 51, and the output end of the water pump is communicated with the thread feeding mechanism 6. Furthermore, as can be seen from fig. 3, the bottom of the suction cup seat 53 is provided with a sand shoveling plate 54 arranged in parallel, and the sand shoveling plate 54 is arranged at the bottom of the inner side of the sand accumulating canal 2. The silt cleaning in the scheme is actually carried out under the aeration link (the moving speed of the gantry moving frame 4 is kept at 0.1m/s), the interference of the moving process to water vortex is small, the water vortex is affected by the reaction and precipitation reaction and the time problem, and the precipitation amount is small in the aeration process, so that the power of the water pump is low.
It should be noted that the movement of the gantry moving frame 4, the operation of the submerged sucker assembly 5 and the movement of the screw feeding mechanism 6 are performed once every 15min, and the gantry moving frame 4 is operated twice in each operation, so as to ensure that a certain amount of silt is accumulated in the silt accumulating channel 2 within 15 min.
Further, as can be seen from fig. 1 and 2. The thread feeding mechanism 6 comprises a feeding barrel 61, a driving motor and a thread feeding rod 62, a water filtering groove 611 distributed towards the grit chamber body 1 is formed in the inner wall of the feeding barrel 61, a filtering net rack 612 is installed at the port of the water filtering groove 611, a water outlet of the water filtering groove 611 is communicated with a water discharging pipe, the water discharging pipe is located in one of the grit chamber bodies 1, and the driving motor is used for driving the thread feeding rod 62 to rotate so as to convey silt. Then, a feed hopper is arranged at the discharge port of the feed cylinder 61, and the silt sent out by the thread feed rod 62 falls into the inclined feed hopper and slides into the ground to be accumulated.
The working principle is as follows:
the first main air pipe 31 and the third main air pipe 33 enable the liquid in the grit chamber body 1 to flow along the outer wall of the grit chamber body in a parabolic direction under the guiding action of the arc-shaped guiding part 80; the second main air pipe 32 drives the liquid tank above the sand accumulating channel 2 to block the blocking part 81 to form a water vortex, and under the drainage of the water vortex, the liquid flowing along the outer wall of the water vortex along the parabola direction is sucked into the water vortex, so that the settled silt can be left in the sand accumulating channel 2. And the movement of the gantry moving frame 4, the work of the submerged sucker component 5 and the movement of the screw feeding mechanism 6 are operated once every 15min, and the gantry moving frame 4 is operated twice in a reciprocating way every time, so that a certain amount of silt can be accumulated in the silt accumulating channel 2 within 15 min.
The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (8)
1. The high-efficiency aeration grit chamber with the slag scraping function is characterized by comprising a grit chamber body (1) constructed in a mirror image manner, wherein a sand accumulation channel (2) distributed close to the inner wall of one side of the grit chamber body (1) is preset at the bottom of the grit chamber body (1), aeration pipeline systems (3) are respectively installed on the walls and the bottom of the grit chamber body (1) at two opposite sides, and the aeration pipeline systems (3) are used for enabling liquid in the two grit chamber bodies (1) to flow from the wall far away from one side to the wall adjacent to one side so as to enable silt to be precipitated into the sand accumulation channel (2);
two gantry moving frame (4) is installed at the top of grit chamber body (1), install on gantry moving frame (4):
a submerged sucker component (5) extending to the bottom of the sand accumulating channel (2);
screw thread feeding mechanism (6), submerged formula sucking disc subassembly (5) be used for with long-pending husky transmission in long-pending husky ditch (2) extremely in screw thread feeding mechanism (6), screw thread feeding mechanism (6) are used for shifting silt.
2. A highly effective aerated grit chamber with slag scraping function according to claim 1, wherein the bottom of the grit chamber body (1) is provided with an inclined portion (11), and the inclined portion (11) is inclined from the wall of the chamber far away from the side of the sand accumulating channel (2) to the sand accumulating channel (2) at an angle of 0.3-0.5 °.
3. The high-efficiency aerated grit chamber with slag scraping function of claim 1, wherein said aeration pipe system (3) comprises a first main air pipe (31), a second main air pipe (32) and a third main air pipe (33);
the first main air pipe (31) and the third main air pipe (33) are arranged on the tank wall on one side opposite to the two grit chamber bodies (1) and communicated with a first air pipe (34) pre-embedded in the tank wall, the tank walls on one side opposite to the two grit chamber bodies (1) are respectively provided with first aeration pipes (35) distributed along a linear array, the inclined part (11) is provided with an aeration disc (36), and the first air pipe (34) is respectively communicated with a plurality of groups of first aeration pipes (35) and the aeration discs (36);
the second main air pipes (32) are arranged on the tank walls on the adjacent sides of the two grit chamber bodies (1) and communicated with second air pipes (37) pre-buried in the tank walls, and the second aeration pipes (38) which are in a linear array and distributed relative to the aeration pipes (35) are arranged on the grit chamber bodies (1).
4. A highly effective aerated grit chamber with slag scraping function according to claim 3, wherein the grit chamber body (1) is built with arc-shaped guide portion (80) and blocking portion (81) along the center line between the inclined portion (11) and the sand accumulating canal (2), wherein:
the first aeration pipe (35) is matched with the aeration disc (36) so that the excited water flow keeps in an inclined phase and flows along the parabola of the outer wall under the guidance of the arc-shaped guide part (80);
the second aeration pipe (38) drives water flow to flow towards the blocking part (81) and is blocked by the blocking part (81) to form a water vortex, and the water vortex is attracted to enable liquid flowing along a parabola to be collected above the sand accumulating channel (2).
5. The high-efficiency aeration grit chamber with the slag scraping function according to claim 1, wherein sliding blocks (41) are mounted on supporting legs at two sides of the gantry moving frame (4), sliding grooves (12) are formed in the tops of the two grit chamber bodies (1), threaded rods (13) are arranged in the sliding grooves (12), the sliding blocks (41) are slidably arranged in the sliding grooves (12) and are driven by the threaded rods (13) to keep moving, one ends of the two threaded rods (13) are provided with pulleys, the high-efficiency aeration grit chamber further comprises a driving motor, the output end of the driving motor is provided with a pulley, and the pulley and the two pulleys are connected through a belt.
6. The high-efficiency aeration grit chamber with the slag scraping function according to claim 1, wherein the submerged sucker assembly (5) comprises connecting seats (51), a communicating pipe (52) and a sucker seat (53), two connecting seats (51) are mounted on the gantry moving frame (4), the communicating pipe (52) is mounted on the connecting seats (51), one end of the communicating pipe is connected with the connecting port of the sucker seat (53), the other end of the communicating pipe is communicated with the water pump input end on the connecting seats (51), and the output end of the water pump is communicated with the screw feeding mechanism (6).
7. The high-efficiency aerated grit chamber with the function of scraping the slag according to claim 6, characterized in that the bottom of the sucker seat (53) is provided with a sand shoveling plate (54) which is arranged in parallel, and the sand shoveling plate (54) is arranged at the bottom of the inner side of the sand accumulating channel (2).
8. The high-efficiency aeration grit chamber with the slag scraping function according to claim 1, wherein the screw feeding mechanism (6) comprises a feeding barrel (61), a driving motor and a screw feeding rod (62), the inner wall of the feeding barrel (61) is provided with water filtering grooves (611) distributed towards the grit chamber body (1), the ports of the water filtering grooves (611) are provided with a filter screen frame (612), the water outlets of the water filtering grooves (611) are communicated with a water discharging pipe, the water discharging pipe is positioned in one of the grit chamber bodies (1), and the driving motor is used for driving the screw feeding rod (62) to rotate so as to convey silt.
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| CN202110928678.6A CN113617074B (en) | 2021-08-13 | 2021-08-13 | High-efficient aeration grit chamber with scrape sediment function |
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| CN202110928678.6A CN113617074B (en) | 2021-08-13 | 2021-08-13 | High-efficient aeration grit chamber with scrape sediment function |
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