CN112791477A - Solid separator for sewage treatment - Google Patents
Solid separator for sewage treatment Download PDFInfo
- Publication number
- CN112791477A CN112791477A CN202011587017.3A CN202011587017A CN112791477A CN 112791477 A CN112791477 A CN 112791477A CN 202011587017 A CN202011587017 A CN 202011587017A CN 112791477 A CN112791477 A CN 112791477A
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- China
- Prior art keywords
- plate
- main flow
- blocking plate
- liquid blocking
- main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000010865 sewage Substances 0.000 title claims abstract description 46
- 239000007787 solid Substances 0.000 title claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 71
- 239000007788 liquid Substances 0.000 claims abstract description 54
- 230000000903 blocking effect Effects 0.000 claims abstract description 49
- 230000007306 turnover Effects 0.000 claims description 25
- 238000007789 sealing Methods 0.000 claims description 18
- 210000000683 abdominal cavity Anatomy 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
- B01D29/94—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging the filter cake, e.g. chutes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sewage (AREA)
Abstract
The invention provides a solid separator for sewage treatment, which comprises: the main structure body and install the actuating mechanism in the main structure body, wherein: the structure main body is provided with a water inlet, a solid discharge port, a water outlet, a main flow passage for communicating the water inlet and the solid discharge port, and a buffer chamber which is positioned on one side of the main flow passage and communicated with the water outlet; a liquid blocking plate is arranged between two ends of the main flow channel, the liquid blocking plate has a first position state and a second position state, and when the liquid blocking plate is in the first position state, the liquid blocking plate divides the main flow channel into an upper section and a lower section; when the liquid blocking plate is in the second position state, the main flow channel is communicated up and down; the liquid blocking plate is connected with the driving mechanism and can be switched between a first position state and a second position state by the driving mechanism; a water passing port communicated with the buffer chamber and a filter plate arranged at the water passing port are arranged on the side wall of the main flow passage and above the liquid blocking plate. The invention can separate out suspended matters in the sewage.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a solid separator for sewage treatment.
Background
With the rapid development of modernization, the sewage generated in urban production and life also increases year by year, and particularly, the domestic sewage has more solid matters or suspended matters in the sewage, so that the urban sewage pipeline has heavier load and is often blocked by accumulated silt.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a solid separator for sewage treatment.
The invention provides a solid separator for sewage treatment, which comprises: the main structure body and install the actuating mechanism in the main structure body, wherein:
the structure main body is provided with a water inlet, a solid discharge port, a water outlet, a main flow passage for communicating the water inlet and the solid discharge port, and a buffer chamber which is positioned on one side of the main flow passage and communicated with the water outlet;
a liquid blocking plate is arranged between two ends of the main flow channel, the liquid blocking plate has a first position state and a second position state, and when the liquid blocking plate is in the first position state, the liquid blocking plate divides the main flow channel into an upper section and a lower section; when the liquid blocking plate is in the second position state, the main flow channel is communicated up and down; the liquid blocking plate is connected with the driving mechanism and can be switched between a first position state and a second position state by the driving mechanism;
a water passing port communicated with the buffer chamber and a filter plate arranged at the water passing port are arranged on the side wall of the main flow passage and above the liquid blocking plate.
Preferably, the buffer chamber is positioned above the water passing port, the bottom of the buffer chamber is opened to form a port communicated with the water passing port, and the filter plate is arranged at the port and covers the port.
Preferably, the filter plate is obliquely arranged, and the highest end of the filter plate is fixed on the upper edge of the water passing port; the water outlet is positioned above the lowest end of the filter plate.
Preferably, the liquid-blocking plate is arranged obliquely and the direction of inclination thereof is opposite to the direction of inclination of the filter plate.
Preferably, a guide plate arranged opposite to the water passing port is arranged in the main flow channel and above the liquid blocking plate, the guide plate is arranged in an inclined mode, the direction of the guide plate is consistent with the inclined direction of the filter plate, the highest end of the guide plate is fixed with the side wall of the main flow channel, and the lowest end of the guide plate faces the water passing port.
Preferably, the liquid blocking plate comprises a fixed plate and a movable plate, the fixed plate is fixedly arranged below the filter plate, a gap is reserved between the fixed plate and the filter plate, and the fixed plate is provided with a slot and an abdominal cavity positioned on one side of the slot; the movable plate is positioned between the water inlet and the row fixing port, and one side of the movable plate extends into the slot and is in sliding sealing fit with the slot; the driving mechanism comprises a cylinder, the cylinder is fixed in the abdominal cavity, and the ejection end of a piston rod of the cylinder is connected with the movable plate.
Preferably, the inner wall of the main runner is provided with a sealing groove and a sealing gasket arranged in the sealing groove, and when the liquid blocking plate is in the first position state, the edge of the movable plate is positioned in the sealing groove and attached to the sealing gasket.
Preferably, a switch valve for controlling the on-off between the water inlet and the main flow passage is arranged between the water inlet and the main flow passage.
Preferably, a turnover plate is arranged in the main runner and below the liquid blocking plate, one side of the turnover plate is hinged with the side wall of the main runner, the other side of the turnover plate, which is opposite to the hinged side, is connected with the side wall of the main runner through a connecting assembly, and the connecting assembly comprises a mounting seat fixed on the side wall of the main runner, a baffle plate rotatably mounted on the mounting seat through a pin shaft, and a limit stop positioned below the baffle plate and fixed on the mounting seat; a return spring is arranged below the turnover plate, and when the return spring is in a natural state, the edge of the turnover plate is overlapped on the baffle; an overflow port and a filter screen arranged at the overflow port are arranged on the side wall of the main runner and above the turnover plate.
Preferably, the turnover plate is obliquely arranged, the lowest end of the turnover plate is positioned below the overflow port and hinged with the inner wall of the main runner, and the highest end of the turnover plate is overlapped on the baffle.
Preferably, the main runner includes runner and the lower runner that is located runner below, the internal diameter of lower runner is greater than runner, and the returning face plate is located runner and is close to the one end of runner.
Preferably, the upper and lower flow channels are smoothly transitioned.
According to the invention, the driving mechanism is arranged on the structure main body, the structure main body is provided with a water inlet, a solid discharge port, a water outlet, a main flow channel communicated with the water inlet and the solid discharge port, and a buffer chamber positioned on one side of the main flow channel and communicated with the water outlet, so that sewage enters the main flow channel from the water inlet and can be intercepted by the liquid blocking plate, liquid in the sewage enters the buffer chamber after being filtered by the filter plate and is finally discharged from the water outlet, and solid matters or suspended matters in the sewage are automatically intercepted above the liquid blocking plate and are periodically discharged to the solid discharge port through the liquid blocking plate; so that the solid or suspended substances in the sewage can be separated out.
Drawings
Fig. 1 is a schematic structural diagram of a solid separator for sewage treatment according to the present invention.
Detailed Description
Referring to fig. 1, the present invention provides a solid separator for sewage treatment, including: a construction body 1 and a drive mechanism mounted in the construction body 1, wherein: the structure body 1 is provided with a water inlet 11, a fixing discharge port 12, a water outlet 13, a main flow passage 14 communicating the water inlet 11 and the fixing discharge port 12, and a buffer chamber 15 located on one side of the main flow passage 14 and communicating with the water outlet 13.
The liquid blocking plate 2 is arranged between two ends of the main flow channel 14, the liquid blocking plate 2 has a first position state and a second position state, and when the liquid blocking plate 2 is in the first position state, the main flow channel 14 is divided into an upper section and a lower section by the liquid blocking plate 2, so that sewage enters the main flow channel 14 from the water inlet 11 and is blocked by the liquid blocking plate 2. When the liquid blocking plate 2 is in the second position state, the main flow channel 14 is communicated up and down, so that the solid matters or suspended matters intercepted by the liquid blocking plate 2 can be discharged to the solid discharge port 12 and finally discharged from the inspection port. The liquid blocking plate 2 is connected with the driving mechanism and can be switched between a first position state and a second position state by the driving mechanism. A water passing port communicated with the buffer chamber 15 and a filter plate 3 arranged at the water passing port are arranged on the side wall of the main flow passage 14 and above the liquid blocking plate 2. The specific use mode is as follows:
in personal life, the separator can be arranged at the inlet of a sewage discharge pipe, so that sewage is subjected to solid-liquid separation by the separator and then is discharged into the sewage discharge pipe, and the sewage is discharged into a designated treatment tank by the sewage discharge pipe. In the place of sewage centralized treatment, the separator can be arranged at the outlet of the sewage discharge pipe, so that the water outlet end of the sewage discharge pipe is connected with the water inlet 11 of the separator, and after sewage enters the separator, solid matters or suspended matters in the sewage are separated out and then discharged into a designated treatment tank.
As can be seen from the above, the driving mechanism is installed on the structure body 1, and the structure body 1 is provided with the water inlet 11, the solid discharge port 12, the water outlet 13, the main flow passage 14 communicating the water inlet 11 and the solid discharge port 12, and the buffer chamber 15 located on one side of the main flow passage 14 and communicating with the water outlet 13, so that the sewage entering the main flow passage 14 from the water inlet 11 can be intercepted by the liquid blocking plate 2, and further the liquid in the sewage enters the buffer chamber 15 after being filtered by the filter plate 3 and finally is discharged from the water outlet 13, and the solid or suspended matter in the sewage is automatically intercepted above the liquid blocking plate 2 and is periodically discharged to the solid discharge port 12 through the liquid blocking plate 2; so that the solid or suspended substances in the sewage can be separated out.
In addition, in the embodiment, the buffer chamber 15 is positioned above the water passing port, the bottom of the buffer chamber 15 is opened to form a port communicated with the water passing port, the filter plate 3 is installed at the port and covers the port, the filter plate 3 is obliquely arranged, and the highest end of the filter plate is fixed on the upper edge of the water passing port; the water outlet 13 is positioned above the lowest end of the filter plate 3, and the structure can effectively avoid the blockage of the filter holes, ensure the water outlet speed and reduce the internal water accumulation.
In this embodiment, the liquid-blocking plate 2 is arranged obliquely and the direction of the inclination is opposite to the direction of the inclination of the filter plate 3, so that the solids or suspended solids intercepted above the liquid-blocking plate 2 are automatically accumulated in a direction away from the filter plate 3, and the accumulated solids or suspended solids can be rapidly discharged when the liquid-blocking plate 2 is opened.
In this embodiment, in the main runner 14 and be located the top that blocks liquid board 2 and be equipped with the guide plate 4 that crosses water gap mutual disposition, guide plate 4 slope is arranged, the guide plate 4 direction is unanimous with the incline direction of filter plate 3, and the top of guide plate 4 is fixed with the lateral wall of main runner 14, and the mouth of a river is crossed to its least significant end orientation, and guide plate 4's setting both can reduce rivers to blocking the impact of liquid board 2, can cross the mouth of a river with sewage direction again to accelerate the solid-liquid separation speed of sewage.
In this embodiment, the inner wall of the main flow passage 14 is provided with a sealing groove and a sealing gasket installed in the sealing groove; the liquid blocking plate 2 comprises a fixed plate 21 and a movable plate 22, the fixed plate 21 is fixedly arranged below the filter plate 3, a gap is reserved between the fixed plate 21 and the filter plate 3, and the fixed plate 21 is provided with a slot and an abdominal cavity positioned on one side of the slot; the movable plate 22 is located between the water inlet 11 and the row fixing port 12, and one side of the movable plate 22 extends into the slot and is in sliding sealing fit with the slot; the driving mechanism comprises an air cylinder, the air cylinder is fixed in the abdominal cavity, the ejection end of a piston rod of the air cylinder is connected with the movable plate 22, the movable plate 22 is pushed to extend out or retract into the fixed plate 21 by means of the stretching of the air cylinder, the liquid blocking plate 2 is switched between the first position state and the second position state, and when the liquid blocking plate 2 is in the first position state, the edge of the movable plate 22 is located in the sealing groove and attached to the sealing gasket. The arrangement of the structure can effectively avoid solid or suspended matters from being retained on the liquid blocking plate 2.
In this embodiment, a switch valve 5 for controlling the on-off between the water inlet 11 and the main flow channel 14 is disposed between the two, and when the liquid blocking plate 2 needs to enter the second position state, the switch valve can be closed in advance to prevent the sewage from being directly discharged from the solid discharge port 12.
In the embodiment, an overturning plate 9 is arranged in the main flow channel 14 and below the liquid blocking plate 2, one side of the overturning plate 9 is hinged to the side wall of the main flow channel 14, the other side of the overturning plate, which is opposite to the hinged side, is connected with the side wall of the main flow channel 14 through a connecting assembly, and the connecting assembly comprises a mounting seat fixed on the side wall of the main flow channel 14, a baffle 6 rotatably mounted on the mounting seat through a pin shaft, and a limit stop 7 which is arranged below the baffle 6 and fixed on the mounting seat; a return spring 8 is arranged below the turnover plate 9, and when the return spring 8 is in a natural state, the other side of the turnover plate 9, which is far away from the hinged side of the turnover plate, is placed on the baffle 6; an overflow port and a filter screen 5 installed at the overflow port are provided on the sidewall of the main channel 14 above the flipping plate 9. The solid or suspended matters discharged by the liquid blocking plate 2 stay on the turnover plate 9 in advance for secondary water control, and the controlled water is discharged from the overflow port; make baffle 6 pressurized deformation when material weight on the returning face plate 9 reaches the certain degree, returning face plate 9 produces the upset in order to discharge the material, and returning face plate 9 behind the discharge material resets under reset spring 8's effect to promote baffle 6 upwards to rotate and make returning face plate 9 take on baffle 6 at the in-process that resets.
In this embodiment, the turnover plate 9 is disposed obliquely, the lowest end of the turnover plate 9 is located below the overflow port and hinged to the inner wall of the main channel 14, and the highest end of the turnover plate 9 is placed on the baffle 6 to control water.
In this embodiment, the main flow channel 14 includes an upper flow channel and a lower flow channel located below the upper flow channel, the upper flow channel and the lower flow channel are in smooth transition, the inner diameter of the lower flow channel is larger than that of the upper flow channel, and the turnover plate 9 is located in the lower flow channel and near one end of the upper flow channel.
In addition, in this embodiment, a water retaining pad 9 made of elastic rubber is arranged below the hinge joint of the turnover plate 9 and the main flow passage 14, one side of the water retaining pad 9 is attached and fixed to the lower plate surface of the turnover plate 9, and the other side is attached and fixed to the inner wall of the main flow passage 14; the edge of the turning plate 9 is provided with a sealing edge made of rubber to reduce the amount of water seepage of the turning plate 9.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A solid separator for sewage treatment, comprising: a construction body (1) and a drive mechanism mounted in the construction body (1), wherein:
the structure main body (1) is provided with a water inlet (11), a solid discharge port (12), a water outlet (13), a main flow passage (14) for communicating the water inlet (11) with the solid discharge port (12), and a buffer chamber (15) which is positioned on one side of the main flow passage (14) and communicated with the water outlet (13);
a liquid blocking plate (2) is arranged between two ends of the main flow channel (14), the liquid blocking plate (2) has a first position state and a second position state, and when the liquid blocking plate (2) is in the first position state, the liquid blocking plate (2) divides the main flow channel (14) into an upper section and a lower section; when the liquid blocking plate (2) is in a second position state, the main flow channel (14) is communicated up and down; the liquid blocking plate (2) is connected with the driving mechanism and can be switched between a first position state and a second position state by the driving mechanism;
a water passing port communicated with the buffer chamber (15) and a filter plate (3) arranged at the water passing port are arranged on the side wall of the main flow passage (14) and above the liquid blocking plate (2).
2. A solids separator for sewage treatment according to claim 1, wherein the buffer chamber (15) is located above the water passing opening, the bottom of the buffer chamber (15) being open to form a port communicating with the water passing opening, and the filter sheet (3) is mounted at the port and covers the port.
3. A solids separator for sewage treatment according to claim 2, characterized in that the filter plate (3) is arranged obliquely and its highest end is fixed to the upper edge of the water gap; the water outlet (13) is positioned above the lowest end of the filter plate (3).
4. A solids separator for sewage treatment according to claim 3, characterized in that the liquid-retaining plate (2) is arranged inclined in the opposite direction to the inclination of the filter plate (3).
5. A solids separator for sewage treatment according to claim 1, characterized in that a flow guide plate (4) arranged opposite to the water passage opening is arranged in the main channel (14) above the liquid-blocking plate (2), the flow guide plate (4) is arranged obliquely, the direction of the flow guide plate (4) coincides with the oblique direction of the filter plate (3), and the highest end of the flow guide plate (4) is fixed to the side wall of the main channel (14) and the lowest end thereof faces the water passage opening.
6. A solids separator for sewage treatment according to any of the claims 1-5, characterized in that the liquid-retaining plate (2) comprises a fixed plate (21) and a movable plate (22), the fixed plate (21) being fixedly mounted below the filter plate (3) with a predetermined spacing from the filter plate (3), the fixed plate (21) having slots and an abdominal cavity on one side of the slots; the movable plate (22) is positioned between the water inlet (11) and the solid discharge port (12), and one side of the movable plate (22) extends into the slot and is in sliding seal fit with the slot; the driving mechanism comprises an air cylinder, the air cylinder is fixed in the abdominal cavity, and the ejection end of a piston rod of the air cylinder is connected with the movable plate (22).
7. A solids separator for sewage treatment according to claim 6, wherein the inner wall of the main channel (14) is provided with a sealing groove and a sealing gasket arranged in the sealing groove, and wherein the edge of the movable plate (22) is located in the sealing groove and in abutment with the sealing gasket when the liquid-blocking plate (2) is in the first position.
8. A solid matter separator for sewage treatment according to claim 1, characterized in that a switch valve for controlling the opening and closing of the water inlet (11) and the main flow channel (14) is provided therebetween.
9. The solid separator for sewage treatment according to claim 1, wherein a turnover plate (9) is provided in the main flow channel (14) and below the liquid blocking plate (2), one side of the turnover plate (9) is hinged to the side wall of the main flow channel (14), and the other side thereof opposite to the hinged side is connected to the side wall of the main flow channel (14) through a connecting assembly, the connecting assembly comprises a mounting seat fixed to the side wall of the main flow channel (14), a baffle plate (6) rotatably mounted on the mounting seat through a pin shaft, and a limit stop (7) provided below the baffle plate (6) and fixed to the mounting seat; a return spring (8) is arranged below the turnover plate (9), and when the return spring (8) is in a natural state, the edge of the turnover plate (9) is overlapped on the baffle (6); an overflow port and a filter screen (5) arranged at the overflow port are arranged on the side wall of the main channel (14) and above the turnover plate (9).
10. A solid separator for sewage treatment according to claim 9, characterized in that the flipping panel (9) is arranged obliquely, and the lowest end of the flipping panel (9) is located below the overflow and hinged to the inner wall of the main channel (14), and the highest end thereof is placed on the baffle (6); preferably, the main runner (14) comprises an upper runner and a lower runner positioned below the upper runner, the inner diameter of the lower runner is larger than that of the upper runner, and the turnover plate (9) is positioned in the lower runner and close to one end of the upper runner; preferably, the upper and lower flow channels are smoothly transitioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011587017.3A CN112791477A (en) | 2020-12-28 | 2020-12-28 | Solid separator for sewage treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011587017.3A CN112791477A (en) | 2020-12-28 | 2020-12-28 | Solid separator for sewage treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112791477A true CN112791477A (en) | 2021-05-14 |
Family
ID=75805176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011587017.3A Withdrawn CN112791477A (en) | 2020-12-28 | 2020-12-28 | Solid separator for sewage treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112791477A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107021553A (en) * | 2017-03-13 | 2017-08-08 | 北京工业大学 | Driving source landscape water removes algae and algae energy utilization system |
| CN113457240A (en) * | 2021-05-28 | 2021-10-01 | 陕西四季春清洁热源股份有限公司 | Filter equipment is washd and conveniently dismantled to middle and deep geothermal system self-cleaning |
-
2020
- 2020-12-28 CN CN202011587017.3A patent/CN112791477A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107021553A (en) * | 2017-03-13 | 2017-08-08 | 北京工业大学 | Driving source landscape water removes algae and algae energy utilization system |
| CN113457240A (en) * | 2021-05-28 | 2021-10-01 | 陕西四季春清洁热源股份有限公司 | Filter equipment is washd and conveniently dismantled to middle and deep geothermal system self-cleaning |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210514 |
|
| WW01 | Invention patent application withdrawn after publication |