CN113463426B - Stripping agent recovery system - Google Patents
Stripping agent recovery system Download PDFInfo
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- CN113463426B CN113463426B CN202110670518.6A CN202110670518A CN113463426B CN 113463426 B CN113463426 B CN 113463426B CN 202110670518 A CN202110670518 A CN 202110670518A CN 113463426 B CN113463426 B CN 113463426B
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to a stripping agent recovery system which comprises a yankee cylinder, a material receiving disc, a sprayer, a recovery tank, a buffer tank and a blending tank, wherein a filtering mechanism is arranged in the recovery tank, the material receiving disc is arranged below the yankee cylinder, the material receiving disc is connected with the filtering mechanism, the recovery tank is connected with the buffer tank, and the buffer tank is respectively connected with the blending tank and the sprayer. The invention has the advantages that: the impurity collecting container is arranged, so that impurities in the stripping agent can be quickly collected, and the filtering efficiency is improved; be equipped with auxiliary device, possess horizontal filter screen clearance and pipeline mediation effect, can improve the operating efficiency of system.
Description
Technical Field
The invention relates to the field of industrial raw material recovery, in particular to a stripping agent recovery system.
Background
In the tobacco processing, corresponding cigarette paper needs to be produced, in the cigarette paper production process, slurry enters a Yangke cylinder for drying after passing through a forming net, and the phenomenon that the paper is stuck to the cylinder and is difficult to put into the cylinder can occur due to rapid evaporation of moisture. In this case, it is necessary to promote the release of the paper by spraying a release agent.
The release agent is an edible aid that can release the web from the yankee surface, helping the substrate to quickly release from the cylinder surface. The stripping agent may wash off part of the paper fragments in the using process, so that the stripping agent cannot be used again, and great waste is generated.
Disclosure of Invention
The invention mainly solves the problem that the stripping agent with impurities cannot be reused after being used, and provides a stripping agent recovery system for filtering and removing impurities from the stripping agent and recycling the stripping agent.
The technical scheme adopted by the invention for solving the technical problem is that the stripping agent recovery system comprises a Yankee cylinder, a material receiving disc, a sprayer, a recovery tank, a buffer tank and a blending tank, wherein a filtering mechanism is arranged in the recovery tank, the material receiving disc is arranged below the Yankee cylinder, the material receiving disc is connected with the filtering mechanism, the recovery tank is connected with the buffer tank, and the buffer tank is respectively connected with the blending tank and the sprayer.
The used stripping agent is collected by the material receiving disc, enters the recovery tank for filtration, enters the buffer tank, is sprayed on paper on the Yangke cylinder through the sprayer after being blended by the blending tank, so that the stripping agent is recycled, the use efficiency of the stripping agent is improved, and the production cost is reduced.
As a preferred scheme of the scheme, the material receiving disc comprises an inclined base and two diversion inclined planes, the upper end face of the inclined base is an inclined plane, the diversion inclined planes are arranged on two sides of the inclined base along the inclined direction of the inclined plane, and the diversion inclined planes are inclined towards the middle of the material receiving disc from the side edges of the inclined planes. The diversion inclined plane enables the stripping agent to quickly flow into the recovery tank after falling into the material receiving disc.
As an optimal scheme of above-mentioned scheme, filtering mechanism includes the gunbarrel and filters the jar, the gunbarrel is equipped with inlet, supernatant export and turbid liquid export down, the inlet links to each other with the take-up pan, supernatant export and turbid liquid export all link to each other with filtering the jar down.
As an optimal scheme of above-mentioned scheme, be equipped with vertical filter screen and horizontal filter screen in the filtration jar, vertical filter screen will filter the jar and divide into overflow district and direct current district, horizontal filter screen divides the direct current district into liquid inlet area and play liquid district, overflow district bottom is equipped with the recess, the recess is less than the setting of horizontal filter screen, the recess links to each other with the muddy liquid export down of settling cask, liquid inlet area links to each other with settling cask supernatant outlet, it links to each other with the recovery tank to go out the liquid district.
As an optimal scheme of the scheme, the bottom of the settling tank is provided with a sundry collecting groove, an impurity collecting device is arranged in the sundry collecting groove and comprises a sundry collecting container and a motor, the sundry collecting container is arranged in the sundry collecting groove and parallel to the bottom surface of the settling tank, the motor is arranged below the sundry collecting container and used for controlling the rotation of the sundry collecting container, an opening is formed in the upper end of the sundry collecting container, and a stirring part which rotates along with the sundry collecting container and enables liquid in the settling tank to form vortex is arranged on the sundry collecting container. Liquid in the settling tank generates vortex by rotating the impurity collecting container, impurities in the liquid are collected to the vortex center under the vortex action, the impurities are collected quickly, and the impurity removing efficiency of the settling tank is improved.
As a preferred scheme of the above scheme, a cover body is arranged on the impurity collecting container, the cover body comprises a plurality of fan-shaped pieces which are arranged at an opening of the impurity collecting container and slide along the radial direction of the impurity collecting container, a spring used for resetting the fan-shaped pieces after the fan-shaped pieces are opened is arranged on the lower end face of the fan-shaped pieces, the stirring part is arranged on the upper end face of the fan-shaped pieces, and the stirring part is a convex edge. When the miscellaneous container of collection is not rotatory, the flabellum is closed under the spring action, and when the miscellaneous container of collection was rotatory, the flabellum radially outwards slided along the miscellaneous container of collection under the effect of centrifugal force, and the flabellum is opened, and protruding edge on the flabellum drives liquid simultaneously and produces the swirl, and impurity in the liquid enters into the miscellaneous container of collection, and when the miscellaneous container of collection stopped rotating, the flabellum resets, avoids impurity to leave the miscellaneous container of collection.
As an optimal scheme of above-mentioned scheme, be equipped with complementary unit in the filtration jar, complementary unit includes first gas port, second gas port, third gas port, gas outlet, two-way air pump, is used for controlling the second gas port valve of second gas port switching, is used for controlling the third gas port valve of third gas port switching, is used for controlling the gas outlet valve of gas outlet switching, is used for controlling the play liquid district control valve of play liquid district liquid outlet switching and is used for the inlet fluid district control valve of inlet fluid district liquid inlet switching, first gas port and second gas port set up in the inlet fluid district, first gas port is higher than the setting of second gas port, the liquid district is located to the third gas port, first gas port is located to two-way air pump, first gas port, second gas port, third gas port and gas outlet link to each other through same pipeline.
As an optimal selection scheme of above-mentioned scheme, first gas port department is equipped with the filter screen, horizontal filter screen net gape diameter is less than the net gape diameter of vertical filter screen, auxiliary mechanism when clearing up horizontal filter screen, keeps the direct current district not have liquid to exist, and inlet area control valve, play liquid zone control valve and air outlet valve are closed, and second air port valve and third air port valve are opened, and two-way air pump begins to operate, and the air gets into from first air port and discharges from second air port and third air port, and the horizontal filter screen is blown away with impurity to the exhaust air of third air port, and impurity blows to vertical filter screen through vertical filter screen entering overflow area. The horizontal filter screen of air current is cleared up, blows the impurity on the horizontal filter screen to the overflow district, and the clearance of the impurity of being convenient for improves the play liquid efficiency of filtering the jar.
As a preferable scheme of the above scheme, when the auxiliary mechanism is used for dredging a pipeline between the groove and the lower turbid liquid outlet, the liquid inlet area control valve, the liquid outlet area control valve, the second air port valve and the third air port valve are closed, the air outlet valve is opened, and the bidirectional air pump is used for pumping or inflating the filter tank.
As a preferable mode of the above mode, the spray velocity F of the shower is V And = V × D/L, wherein V is the operating speed of the Yankee cylinder, D is the diameter of the spray nozzle, and L is the circumference of the Yankee cylinder.
The invention has the advantages that: the impurity collecting container is arranged, so that impurities in the stripping agent can be quickly collected, and the filtering efficiency is improved; be equipped with auxiliary device, possess horizontal filter screen clearance and pipeline mediation effect, can improve the operating efficiency of system.
Drawings
FIG. 1 is a schematic view showing a structure of a stripper recovery system in example 1.
Fig. 2 is a schematic perspective view of the receiving tray in embodiment 1.
FIG. 3 is a schematic sectional view showing the structure of a precipitation tank in example 1.
FIG. 4 is a schematic sectional view showing a filter tank according to example 1.
FIG. 5 is a schematic sectional view showing the construction of the precipitation tank in example 2.
Fig. 6 is a schematic top view of the cover in embodiment 2.
Fig. 7 is a schematic bottom view of the cover in embodiment 2.
1-Yangka cylinder 2-sprayer 3-material receiving disc 4-filtering mechanism 5-recovery tank 6-blending tank 7-buffer tank 8-diversion inclined plane 9-supernatant outlet 10-lower turbid liquid outlet 11-sedimentation tank 12-motor 13-impurity collecting container 14-stirring part 15-fan-shaped sheet 16-convex edge 17-spring 18-filtering tank 19-overflow area 20-liquid inlet area 21-liquid outlet area 22-vertical filter screen 23-transverse filter screen 24-first air port 25-bidirectional air pump 26-air outlet valve 27-second air port 28-second air port valve 29-third air port 30-third air port valve 31-groove.
Detailed Description
The technical scheme of the invention is further explained by the embodiments and the accompanying drawings.
Example 1:
this embodimentA separation agent recovery system is shown in figure 1 and comprises a Yankee cylinder 1, a material receiving disc 3, a sprayer 2, a recovery tank 5, a buffer tank 7 and a blending tank 6, wherein a filtering mechanism 4 is arranged in the recovery tank, the material receiving disc 3 is arranged below the Yankee cylinder 1, the material receiving disc 3 is connected with the filtering mechanism 4, the recovery tank 5 is connected with the buffer tank 7, the buffer tank 7 is respectively connected with the blending tank 6 and the sprayer 2, and the sprayer and the buffer tank are directly provided with a control valve. In order to ensure that the stripping agent sprayed by the sprayer can completely cover the surface of the cylinder and ensure that the substrate is uniformly and effectively stripped, the spraying speed F of the sprayer is controlled in the embodiment V And = V × D/L, wherein V is the operating speed of the Yankee cylinder, D is the diameter of the spray nozzle of the sprayer, and L is the circumference of the Yankee cylinder.
As shown in fig. 2, the receiving tray 3 includes an inclined base and two diversion slopes 8, the upper end surface of the inclined base is an inclined plane, the diversion slopes are arranged on two sides of the inclined base along the inclined direction of the inclined plane, and the diversion slopes are inclined from the side edges of the inclined plane to the middle of the receiving tray. The bottom surface of the receiving disc is rectangular, and the length and the width of the receiving disc are respectively the same as the diameter and the width of the Yankee cylinder. The design of two water conservancy diversion inclined planes can shorten the time that the stripping agent falls into the take-up pan to the stripping agent outflow take-up pan, effectively prevents that the condition that ponding, overflow from appearing in the take-up pan.
The filtering mechanism 4 comprises a settling tank 11 and a filtering tank 18, as shown in fig. 3, the settling tank is provided with a liquid inlet, a supernatant outlet 9 and a turbid liquid outlet 10, the liquid inlet is connected with the material receiving disc, and the supernatant outlet and the turbid liquid outlet are both connected with the filtering tank 18. 11 bottoms of gunbarrel are equipped with the miscellaneous recess of collection, be equipped with impurity collection device in the miscellaneous recess of collection, impurity collection device including locate in the miscellaneous recess of collection and with the miscellaneous container 13 of collection of gunbarrel bottom surface parallel and level with locate the miscellaneous container below of collection and be used for controlling the rotatory motor 12 of the miscellaneous container of collection, the miscellaneous container upper end of collection is equipped with the opening, be equipped with on the miscellaneous container of collection and follow the rotatory stirring portion 14 that makes liquid formation swirl in the gunbarrel of collection miscellaneous container, stirring portion is the stirring rod of vertical setting on the miscellaneous container wall of collection in this embodiment.
The motor 12 runs periodically under the control of the controller, and when the motor does not run, the precipitation tank realizes the preliminary separation of impurities and liquid through physical precipitation; when the motor runs, the motor drives the impurity collecting container to rotate, the impurity collecting container drives the stirring rod to rotate, liquid in the settling tank generates vortex under the action of the stirring rod, impurities in the liquid are gathered in the vortex center under the action of the vortex, namely, the impurity collecting container, and further separation of the impurities and the liquid is achieved.
As shown in figure 4, a vertical filter screen 22 and a transverse filter screen 23 are arranged in the filter tank 18, the diameter of the mouth of the transverse filter screen is smaller than that of the vertical filter screen, the vertical filter screen divides the filter tank into an overflow area 19 and a direct-flow area, the transverse filter screen is arranged in the direct-flow area and divides the direct-flow area into a liquid inlet area 20 and a liquid outlet area 21, a groove 31 is arranged at the bottom of the overflow area, the groove 31 is lower than the transverse filter screen 23 and is connected with a lower turbid liquid outlet of the settling tank, the liquid inlet area is connected with a supernatant outlet of the settling tank, the liquid outlet area is connected with a recovery tank, an auxiliary mechanism is also arranged on the filter tank, the auxiliary mechanism comprises a first air port 24, a second air port 27, a third air port 29, an air outlet, a bidirectional air pump 25, a second air port valve 28 for controlling the opening and closing of the second air port, a third air port valve 30 for controlling the opening and closing of the third air port, an air outlet valve 26 for controlling the opening and closing of the air outlet, a liquid outlet area control valve for controlling the opening and closing of a liquid outlet of the liquid outlet area and a liquid inlet area control valve for controlling the opening and closing of a liquid inlet of the liquid inlet area, wherein the first air port 24 and the second air port 27 are arranged in the liquid inlet area, the first air port is higher than the second air port, a filter screen is arranged at the first air port, the third air port 29 is arranged in the liquid outlet area, the bidirectional air pump 25 is arranged at the first air port, and the first air port, the second air port, the third air port and the air outlet are connected through the same pipeline.
The auxiliary mechanism is used for cleaning the transverse filter screen and dredging a pipeline between the groove and the lower turbid liquid outlet, the filter tank is separated from the system before the transverse filter screen is cleaned, the filter tank is hung above the recovery tank, a liquid inlet of the liquid inlet area and a liquid outlet of the liquid outlet area are kept open, a liquid inlet of the overflow area is closed, liquid in the straight-flow area is discharged, no liquid exists in the straight-flow area, then the transverse filter screen is cleaned, the liquid inlet of the liquid inlet area and the liquid outlet of the liquid outlet area are closed during cleaning, the air outlet valve 26 is closed, the second air port valve 28 and the third air port valve 30 are opened, the bidirectional air pump starts to operate, air enters from the first air port 24 and is discharged from the second air port 27 and the third air port 29, impurities are blown off and blown away from the transverse filter screen to move upwards by air discharged from the third air port, the impurities are blown to the vertical filter screen by air discharged from the second air port, the impurities enter the overflow area through the vertical filter screen, the bidirectional air pump stops operating after a period of time, and the impurities fall into the groove of the overflow area, the first air port, the first air pump blows air to the impurities which may be attached to the first air screen.
When the auxiliary mechanism is used for dredging a pipeline between the groove and the lower turbid liquid outlet, the liquid inlet area control valve, the liquid outlet area control valve, the second air port valve and the third air port valve are closed, the air outlet valve is opened, and the bidirectional air pump is used for pumping or inflating the filter tank. The air pressure in the filter tank is smaller than or larger than the air pressure in the sedimentation tank by air suction or inflation, and the liquid in the pipeline between the groove and the lower turbid liquid outlet is pressed by the air pressure to flow, so that the dredging purpose is achieved.
Example 2:
a stripping agent recycling system of this embodiment is different from that of embodiment 1 in that a cover is disposed on the impurity collecting container of this embodiment, as shown in fig. 5-7, the cover includes four fan-shaped pieces 15 disposed at an opening of the impurity collecting container and sliding along a radial direction of the impurity collecting container, and the four fan-shaped pieces form a circular cover. The area of lid is greater than collection miscellaneous container opening, and the center of lid is on same plumb line with collection miscellaneous container's center, and for the balance of guaranteeing the scallop, the lid centre of a circle is kept away from to the focus of scallop. The upper end face of the fan-shaped sheet is provided with a stirring part which is a convex edge 16. The end face is equipped with the spring 17 that is used for making the flabellum reset after the flabellum is opened under the flabellum, and spring one end links to each other with the miscellaneous container wall of collection, and the spring other end links to each other with the baffle of flabellum point department, and under the spring action, four flabellums offset, and when the miscellaneous container of collection rotated, the flabellum made the spring compression under centrifugal force effect, realized opening of flabellum.
When the settling tank of the embodiment is used for separating impurities from liquid, the motor of the settling tank runs periodically under the control of the controller, and when the motor does not run, the settling tank realizes the primary separation of the impurities from the liquid through physical precipitation; when the motor runs, the motor drives the impurity collecting container to rotate, the impurity collecting container drives the convex edge to rotate, liquid in the settling tank generates vortex under the action of the convex edge, meanwhile, the liquid gives an outward force to the convex edge, the fan-shaped sheet is influenced by a centrifugal force, a spring on the lower end face of the fan-shaped sheet is compressed at the moment, the fan-shaped sheet moves outwards along the radial direction of the impurity collecting container, the fan-shaped sheet is opened, impurities in the liquid are gathered at the vortex center under the action of the vortex, namely, the impurity collecting container is formed in the vortex center, when the motor stops running, the centrifugal force of the fan-shaped sheet is reduced, the force of the liquid on the convex edge is reduced, the spring on the lower end face of the fan-shaped sheet is restored, the fan-shaped sheet is reset and closed under the action of the spring, impurities are closed in the impurity collecting container, and further separation of the impurities and the liquid is achieved.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (7)
1. A stripping agent recovery system is characterized in that: the recycling tank is connected with the buffer tank, and the buffer tank is respectively connected with the blending tank and the sprayer;
the filtering mechanism comprises a settling tank and a filtering tank, the settling tank is provided with a liquid inlet, a supernatant outlet and a turbid liquid outlet, the liquid inlet is connected with the material receiving disc, and the supernatant outlet and the turbid liquid outlet are both connected with the filtering tank;
the filter tank is internally provided with a vertical filter screen and a transverse filter screen, the vertical filter screen divides the filter tank into an overflow area and a direct-flow area, the transverse filter screen divides the direct-flow area into a liquid inlet area and a liquid outlet area, the bottom of the overflow area is provided with a groove, the groove is arranged below the transverse filter screen, the groove is connected with a lower turbid liquid outlet of the settling tank, the liquid inlet area is connected with a supernatant outlet of the settling tank, and the liquid outlet area is connected with a recovery tank;
be equipped with complementary unit in the filtration jar, complementary unit includes first gas port, second gas port, third gas port, gas outlet, two-way air pump, is used for controlling the second gas port valve of second gas port switching, is used for controlling the third gas port valve of third gas port switching, is used for controlling the gas outlet valve of gas outlet switching, is used for controlling the play liquid district control valve of play liquid district liquid outlet switching and is used for the feed liquor district control valve of feed liquor district liquid inlet switching, first gas port and second gas port set up in the feed liquor district, first gas port is higher than the setting of second gas port, the liquid district is located to the third gas port, first gas port department is located to two-way air pump, first gas port, second gas port, third gas port and gas outlet link to each other through same pipeline.
2. The stripper recovery system of claim 1, wherein: the take-up pan includes tilt base and two water conservancy diversion inclined planes, the tilt base up end is the inclined plane, the water conservancy diversion inclined plane sets up in the tilt base both sides along the inclined plane incline direction, and the water conservancy diversion inclined plane is inclined to the take-up pan centre by the inclined plane side.
3. The stripper recovery system of claim 1, wherein: the utility model discloses a deposit jar, including collection miscellaneous container, motor, collection miscellaneous container upper end is equipped with the opening, be equipped with on the collection miscellaneous container and follow the rotatory stirring portion that makes liquid form swirl in the deposit jar of collection miscellaneous container rotation, be equipped with the miscellaneous recess of collection in the miscellaneous recess of collection, be equipped with impurity collection device in the miscellaneous recess of collection and with the collection miscellaneous container of deposit jar bottom surface parallel and level and locate the miscellaneous container below of collection and be used for controlling the rotatory motor of the miscellaneous container of collection, the miscellaneous container of collection upper end is equipped with the opening, the collection is equipped with on the miscellaneous container of collection and follows the miscellaneous container rotation of collection and makes liquid form swirl stirring portion in the deposit jar.
4. The stripper recovery system according to claim 3, wherein: be equipped with the lid on the miscellaneous container of collection, the lid includes that a plurality of settings are at the miscellaneous container opening part of collection and along the miscellaneous container radial sliding's of collection fanning strip, fanning strip lower terminal surface is equipped with and is used for making the spring that the fanning strip resets after the fanning strip is opened, the fan-shaped up end is located to stirring portion, and stirring portion is protruding edge.
5. The stripper recovery system according to claim 1, wherein: first gas port department is equipped with the filter screen, horizontal filter screen net gape diameter is less than the net gape diameter of vertical filter screen, complementary unit keeps the direct current district not to have liquid to exist when clearing up horizontal filter screen, and feed liquor district control valve, play liquid district control valve and air outlet valve are closed, and second air port valve and third air port valve are opened, and two-way air pump begins to operate, and the air gets into from second air port and third air port discharge from first air port, and horizontal filter screen is blown away from with impurity to the exhaust air of third air port, and impurity blows to vertical filter screen with impurity to the exhaust air of second air port, and impurity gets into the overflow district through vertical filter screen.
6. The stripper recovery system of claim 1, wherein: when the auxiliary mechanism is used for dredging a pipeline between the groove and the lower turbid liquid outlet, the liquid inlet area control valve, the liquid outlet area control valve, the second air port valve and the third air port valve are closed, the air outlet valve is opened, and the bidirectional air pump is used for pumping or inflating the filter tank.
7. The stripper recovery system according to claim 1, wherein: jet velocity F of the shower V And = V × D/L, wherein V is the operating speed of the Yankee cylinder, D is the diameter of the spray nozzle of the sprayer, and L is the circumference of the Yankee cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110670518.6A CN113463426B (en) | 2021-06-17 | 2021-06-17 | Stripping agent recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110670518.6A CN113463426B (en) | 2021-06-17 | 2021-06-17 | Stripping agent recovery system |
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| Publication Number | Publication Date |
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| CN113463426A CN113463426A (en) | 2021-10-01 |
| CN113463426B true CN113463426B (en) | 2023-03-17 |
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| CN202110670518.6A Active CN113463426B (en) | 2021-06-17 | 2021-06-17 | Stripping agent recovery system |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1196032C (en) * | 1998-08-11 | 2005-04-06 | 东进世美肯株式会社 | Stripping agent, stripping method, stripping agent circulation equipment and stripping agent controller |
| KR20070099827A (en) * | 2006-04-05 | 2007-10-10 | 삼성전자주식회사 | Pr stripping apparatus, method for recycling pr stripper and method for fabricating thin film transistor array substrate using the same |
| CN205710237U (en) * | 2016-04-25 | 2016-11-23 | 李宏鑫 | A kind of water conservancy equipment utilizing microwave to carry out sewage disposal |
| CN207581767U (en) * | 2017-11-21 | 2018-07-06 | 百威英博雪津啤酒有限公司 | A kind of beer whirlpool tank |
| CN209005343U (en) * | 2018-09-25 | 2019-06-21 | 陕西三原香芝廊调味食品有限公司 | Precipitate filtering tank |
| CN110876867A (en) * | 2019-12-03 | 2020-03-13 | 湘潭林海机械制造有限公司 | Rotary filtering centrifugal filter |
| CN212071286U (en) * | 2020-05-19 | 2020-12-04 | 荣成市泰林机床配件有限公司 | Machine tool chip removal structure for integrated casting rear chip removal lathe bed |
| CN212777882U (en) * | 2020-06-16 | 2021-03-23 | 江苏金新空调有限公司 | Air conditioner indoor unit condensate water disc with air outlet air guide structure |
| CN212854913U (en) * | 2020-07-02 | 2021-04-02 | 四川雨之泉环境科技有限公司 | Landfill leachate returns and spouts processing apparatus |
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