CN110152367B - Energy-concerving and environment-protective sewage filter equipment among power generation system - Google Patents
Energy-concerving and environment-protective sewage filter equipment among power generation system Download PDFInfo
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- CN110152367B CN110152367B CN201910571801.6A CN201910571801A CN110152367B CN 110152367 B CN110152367 B CN 110152367B CN 201910571801 A CN201910571801 A CN 201910571801A CN 110152367 B CN110152367 B CN 110152367B
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- 239000010865 sewage Substances 0.000 title claims abstract description 32
- 238000010248 power generation Methods 0.000 title claims abstract description 20
- 238000001914 filtration Methods 0.000 claims abstract description 71
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 34
- 230000006698 induction Effects 0.000 claims description 20
- 230000000903 blocking effect Effects 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000002893 slag Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 238000004134 energy conservation Methods 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 claims 1
- 238000010030 laminating Methods 0.000 abstract 1
- 239000003818 cinder Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000002803 fossil fuel Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
-
- 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
- B01D29/90—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 feeding
-
- 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)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses an energy-saving and environment-friendly sewage filtering device in a power generation system, relates to the technical field of filtering equipment, and mainly aims to solve the problem that the efficiency is low because the filtering operation is required to be stopped when residue is discharged by a transmission filtering device; this filter equipment, including filtering box and bed plate, filter the box and be fixed in the bed plate for drum type structure and filter box lateral wall through supporting the support body on, filter the inside rotatory pole axle that is provided with axis coincidence with it of box, be fixed with fixed cover on the rotatory pole axle, be provided with on the lateral wall of fixed cover and keep off shrouding and two filters, two the equal sealed laminating of filter avris fits in and filters the box inner wall, and two filters enclose into two filter chambers with keeping off the shrouding, filtering the box inner wall respectively. The filter has a simple structure, can automatically carry out filtering and deslagging operation without stopping filtering, is convenient and quick, can effectively prevent the blockage problem, and has strong practicability.
Description
Technical Field
The invention relates to the technical field of filtering equipment, in particular to an energy-saving and environment-friendly sewage filtering device in a power generation system.
Background
The power generation is a production process of converting original energy sources such as water energy, heat energy of fossil fuel (coal, oil and natural gas), nuclear energy and the like into electric energy by using a power generation device, so as to supply the needs of departments of national economy and people's life, and the power generation still uses the fossil fuel as a main power generation form at present.
And because the produced waste water of electricity generation can not directly be discharged and need filter, operations such as sulphur removal are in order to avoid sewage influence environment in the power plant, and in the sewage filtration process, because the filter residue in the sewage can remain on the filter, need in time discharge the filter residue in order to avoid depositing more and causing the jam, and current filter equipment need stop sewage earlier when the discharge filter residue and filter, then the discharge filter residue, at last carrying out sewage filtration, comparatively troublesome and influence filterable efficiency like this.
Disclosure of Invention
The invention aims to provide an energy-saving and environment-friendly sewage filtering device in a power generation system, and aims to solve the problem that the efficiency is low because the filtering operation needs to be stopped when residue is discharged by a transmission filtering device.
In order to achieve the purpose, the invention provides the following technical scheme:
an energy-saving and environment-friendly sewage filtering device in a power generation system comprises a filtering box body and a base plate, wherein the filtering box body is of a cylindrical structure, the side wall of the filtering box body is fixed on the base plate through a supporting frame body, a liquid inlet channel is arranged on the upper side wall of the filtering box body, a liquid discharge channel is arranged on the side wall of the filtering box body, a rotating rod shaft which is coincident with the axis of the filtering box body is arranged in the filtering box body, a fixing sleeve is fixed on the rotating rod shaft, a blocking and sealing plate and two filtering plates are arranged on the outer side wall of the fixing sleeve, the side edges of the two filtering plates are hermetically attached to the inner wall of the filtering box body, and the two filtering plates respectively form two filtering cavities with the blocking and sealing plate and the inner wall of the filtering box body;
the filter box lateral wall is provided with two and uses the vertical diameter of filter box as the row's cinder notch of center of symmetry, and the avris that two filters are close to the filter box inner wall all is provided with and is located its downside and covers the cowl on arranging the cinder notch, the one end of rotatory pole axle is stretched out and is filtered the box end wall and with the servo motor output shaft that sets up on filtering the box end wall.
On the basis of the technical scheme, the invention also provides the following optional technical scheme:
in one alternative: the end part of the liquid inlet channel is connected with a liquid guide pipe, and the bottom end of the liquid discharge channel is connected with a liquid discharge valve arranged on the base plate.
In one alternative: keep off shrouding top side and all seted up the port towards inlet channel and filter the two avris of junction of box and inlet channel, the port radius equals with the radial length of fender shrouding, it is provided with the rubber strip to keep off shrouding top side.
In one alternative: and the end part of the rotating rod shaft and the output shaft of the servo motor are respectively provided with a transmission gear, and the two transmission gears are meshed.
In one alternative: two contained angles between two filter plates and the fender shrouding are equal and are less than the degree.
In one alternative: two port limit lateral wall still all is provided with pressure sensors, and two pressure sensors electric property parallel connection are in setting up the control panel on supporting the support body, control panel electric connection is in servo motor and control servo motor work.
In one alternative: the control panel comprises a central processing module, an induction acquisition module, an opening and closing module, a conversion module and a time setting module, wherein the induction acquisition module is used for receiving a signal transmitted after the pressure sensor senses pressure; the starting and stopping module is used for connecting and starting and stopping the servo motor according to the induction signal obtained by the induction obtaining module, and when the induction obtaining module obtains the induction signal, the induction obtaining module immediately controls the servo motor to stop working for a period of time and then controls the servo motor to start working; the conversion module is used for controlling the servo motor to convert the rotation direction of the output shaft after being started every time; the central processing module is used for coordinating all the modules and generating a control instruction for the servo motor.
In one alternative: the control panel further comprises a time setting module, and the time setting module is used for setting the time for controlling the servo motor to stop driving work by the induction acquisition module.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, two filtering cavities formed by the two filtering plates, the two baffle plates and the inner wall of the filtering box body are utilized, so that the sewage can be discharged without stopping the sewage filtering work, the filtering efficiency is higher and the blockage problem is avoided;
2. the arc-shaped baffle can be used for plugging the slag discharge port during filtering so as to avoid the filtered slag from being discharged through the arc-shaped baffle, thereby improving the filtering effect;
3. the filter has a simple structure, can automatically carry out filtering and deslagging operation without stopping filtering, is convenient and quick, can effectively prevent the blockage problem, and has strong practicability.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the end side of the present invention.
Fig. 3 is a schematic view of the installation structure of the baffle plate and the filter plate according to the present invention.
Fig. 4 is a schematic structural diagram of a control panel according to the present invention.
Notations for reference numerals: the device comprises a filtering box body 1, a base plate 2, a support frame body 3, a liquid inlet channel 4, a liquid discharge channel 5, a liquid discharge valve 6, a rotating rod shaft 7, a fixed sleeve 8, a liquid guide pipe 9, a baffle plate 10, a filter plate 11, a port 12, a pressure sensor 13, a rubber strip 14, a slag discharge port 15, an arc-shaped baffle plate 16, a material collecting groove 17, a control panel 18, a servo motor 19, a transmission gear 20, a central processing module 21, a sensing acquisition module 22, an opening and closing module 23, a conversion module 24 and a time setting module 25.
Detailed Description
The present invention will be described in detail with reference to the following embodiments, wherein like or similar elements are designated by like reference numerals throughout the several views, and wherein the shape, thickness or height of the various elements may be expanded or reduced in practice. The examples are given solely for the purpose of illustration and are not intended to limit the scope of the invention. Any obvious modifications or variations can be made to the present invention without departing from the spirit or scope of the present invention.
Example 1
Referring to fig. 1 to 3, in an embodiment of the present invention, an energy-saving and environment-friendly sewage filtering device in a power generation system includes a filtering box 1 and a base plate 2, the filtering box 1 is a cylindrical structure, a side wall of the filtering box 1 is fixed on the base plate 2 through a support frame 3, a side wall of the filtering box 1 is provided with a liquid inlet channel 4, an end of the liquid inlet channel 4 is connected with a liquid guide tube 9, a side wall of the filtering box 1 is provided with a liquid discharge channel 5, a bottom end of the liquid discharge channel 5 is connected to a liquid discharge valve 6 arranged on the base plate 2, a rotating rod shaft 7 coinciding with an axis of the filtering box 1 is arranged inside the filtering box 1, a fixing sleeve 8 is fixed on the rotating rod shaft 7, a blocking plate 10 and two filtering plates 11 are arranged on an outer side wall of the fixing sleeve 8, sides of the two filtering plates 11 are hermetically attached to an inner wall of the filtering box 1, the two filtering plates 11 are respectively connected with the blocking plate 10, Two filter cavities are defined by the inner wall of the filter box body 1, the top side of the blocking and sealing plate 10 faces the liquid inlet channel 4, two sides of the joint of the filter box body 1 and the liquid inlet channel 4 are respectively provided with a port 12, the radius of the port 12 is equal to the radial length of the blocking and sealing plate 10, the side wall of the filter box body 1 is provided with two slag discharge ports 15 which take the vertical diameter of the filter box body 1 as a symmetric center, the sides of the two filter plates 11 close to the inner wall of the filter box body 1 are respectively provided with an arc-shaped baffle plate 16 which is positioned at the lower side and covers the slag discharge ports 15, one end of the rotary rod shaft 7 extends out of the end wall of the filter box body 1 and is connected with an output shaft of a servo motor 19 arranged on the end wall of the filter box body 1, specifically, the end part of the rotary rod shaft 7 and the output shaft of the servo motor 19 are respectively provided with a transmission gear 20, and the two transmission gears 20 are meshed;
when the filter is used, firstly, the servo motor 19 is utilized to drive the rotary rod shaft 7 to rotate, so that the end side of the baffle plate 10 rotates to the inside of one port 12, one filter cavity is not communicated with the liquid inlet channel 4, the other filter cavity is communicated with the liquid inlet channel 4, sewage in the power generation system enters the inside of the filter box body 1 through the liquid guide pipe 9 and the liquid inlet channel 4 and flows into the filter cavity, after the filter plate 10 is filtered, the sewage is discharged through the liquid discharge channel 5 and the liquid discharge valve 6, after one-time filtering, because the filtered impurities on the sewage are excessive, the rotary rod shaft 7 is overturned by utilizing the servo motor 19, so that the upper side of the baffle plate 10 is arranged in the other port 12, so that the filter cavity filled with filter residues is not communicated with the liquid inlet channel 4, the other filter cavity is communicated with the liquid inlet channel 4, so that the sewage flows to the other filter cavity for filtering, when the rotary rod shaft 7 rotates, filter 11 is rotatory equally and make cowl 16 open row's cinder notch 15 to the filter residue in the filter chamber is through row's cinder notch 15 discharge, and then can discharge the filter residue when sewage filters goes on, in time avoids causing the jam and need not to stop the filter work of sewage, and efficiency is higher.
Two included angles between the two filter plates 11 and the blanking plate 10 are equal and less than 120 degrees; in order to avoid the sewage from flowing out through the port which discharges slag due to too fast flowing, the top side of the baffle plate 10 is provided with a rubber strip 14 to ensure that the side of the baffle plate 10 is placed in the port 12 and the rubber strip 14 abuts against the side wall of the port 12 to ensure the sealing property;
still be provided with two collecting trough 17 on the bed plate 2 and two collecting trough 17 are located support frame body 3 under so that collect the filter residue respectively.
Example 2
Referring to fig. 1 and 4, the embodiment of the present invention is different from embodiment 1 in that: pressure sensors 13 are further arranged on the side walls of the two ports 12, the two pressure sensors 13 are electrically connected in parallel to a control panel 18 arranged on the support frame body 3, and the control panel 18 is electrically connected to a servo motor 19 and controls the servo motor 19 to work;
the control panel 18 comprises a central processing module 21, an induction acquisition module 22, an opening and closing module 23, a conversion module 24 and a time setting module 25, wherein the induction acquisition module 22 is used for receiving signals transmitted after the pressure sensor 13 senses pressure; the start-stop module 23 is used for connecting the induction signal obtained by the induction obtaining module 22 to start and stop the servo motor 19, and when the induction signal is obtained by the induction obtaining module 22, the induction obtaining module 22 immediately controls the servo motor 19 to stop working for a period of time and then controls the servo motor 19 to start working; the conversion module 24 is used for controlling the servo motor 19 to convert the rotation direction of the output shaft after each start; the central processing module 21 is used for coordinating all the modules and generating a control instruction for the servo motor 19; when the baffle plate 10 contacts the pressure sensor 13, the pressure sensor 13 transmits a sensed signal to the sensing acquisition module 22, then the start-stop module 23 controls the servo motor 19 to stop working for a period of time, then the start-stop module controls the servo motor 19 to start working, and the conversion module 24 controls the servo motor 19 to reversely start, so that the filtering operation can be automatically performed, manual control operation is not needed, and convenience and rapidness are realized;
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (8)
1. An energy-saving and environment-friendly sewage filtering device in a power generation system comprises a filtering box body (1) and a base plate (2), the filtering box body (1) is of a cylindrical structure, the side wall of the filtering box body (1) is fixed on the base plate (2) through the supporting frame body (3), the side wall of the filtering box body (1) is provided with a liquid inlet channel (4), the side wall of the filtering box body (1) is provided with a liquid discharge channel (5), the filter box is characterized in that a rotating rod shaft (7) which is coincident with the axis of the filter box is arranged in the filter box body (1), a fixed sleeve (8) is fixed on the rotating rod shaft (7), a blocking and sealing plate (10) and two filter plates (11) are arranged on the outer side wall of the fixed sleeve (8), the side edges of the two filter plates (11) are hermetically attached to the inner wall of the filter box body (1), and the two filter plates (11) respectively surround two filter cavities with the blocking and sealing plate (10) and the inner wall of the filter box body (1);
filter box (1) lateral wall and be provided with two and use the vertical diameter of filter box (1) as slag notch (15) of symmetry center, the avris that two filter (11) are close to filter box (1) inner wall all is provided with arc baffle (16) that are located its downside and cover on slag notch (15), the one end of rotatory pole axle (7) is stretched out and is filtered box (1) end wall and with set up servo motor (19) output shaft on filtering box (1) end wall.
2. The energy-saving and environment-friendly sewage filtering device in the power generation system according to claim 1, wherein the end of the liquid inlet channel (4) is connected with a liquid guide pipe (9), and the bottom end of the liquid discharge channel (5) is connected with a liquid discharge valve (6) arranged on the base plate (2).
3. The sewage filtering device with energy conservation and environmental protection in the power generation system according to claim 1, wherein the top side of the baffle plate (10) faces the liquid inlet channel (4) and ports (12) are opened on both sides of the joint of the filtering box body (1) and the liquid inlet channel (4), the radius of each port (12) is equal to the radial length of the baffle plate (10), and a rubber strip (14) is arranged on the top side of the baffle plate (10).
4. The energy-saving and environment-friendly sewage filtering device in the power generation system according to claim 3, wherein the end of the rotating rod shaft (7) and the output shaft of the servo motor (19) are both provided with a transmission gear (20), and the two transmission gears (20) are meshed.
5. The energy-saving and environment-friendly sewage filtering device in the power generation system according to claim 3, wherein two included angles between the two filtering plates (11) and the baffle plate (10) are equal and less than 120 degrees.
6. The energy-saving and environment-friendly sewage filtering device in the power generation system according to claim 3 or 4, wherein the side walls of the two ports (12) are provided with pressure sensors (13), the two pressure sensors (13) are electrically connected in parallel to a control panel (18) arranged on the support frame body (3), and the control panel (18) is electrically connected to a servo motor (19) and controls the servo motor (19) to work.
7. The energy-saving and environment-friendly sewage filtering device in the power generation system according to claim 6, wherein the control panel (18) comprises a central processing module (21), a sensing acquisition module (22), an opening and closing module (23), a conversion module (24) and a time setting module (25), and the sensing acquisition module (22) is used for receiving a signal transmitted after the pressure sensor (13) senses the pressure; the starting and stopping module (23) is used for connecting the induction signal obtained by the induction obtaining module (22) to start and stop the servo motor (19), and when the induction obtaining module (22) senses the signal, the induction obtaining module (22) immediately controls the servo motor (19) to stop working for a period of time and then controls the servo motor (19) to start working; the conversion module (24) is used for controlling the servo motor (19) to convert the rotation direction of the output shaft after being started each time; the central processing module (21) is used for coordinating all the modules and generating a control instruction for the servo motor (19).
8. The energy-saving and environment-friendly sewage filtering device in the power generation system according to claim 7, wherein the control panel (18) further comprises a time setting module (25), and the time setting module (25) is used for setting the time for controlling the servo motor (19) to stop driving by the induction obtaining module (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910571801.6A CN110152367B (en) | 2019-06-28 | 2019-06-28 | Energy-concerving and environment-protective sewage filter equipment among power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910571801.6A CN110152367B (en) | 2019-06-28 | 2019-06-28 | Energy-concerving and environment-protective sewage filter equipment among power generation system |
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| Publication Number | Publication Date |
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| CN110152367A CN110152367A (en) | 2019-08-23 |
| CN110152367B true CN110152367B (en) | 2021-07-30 |
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| CN201910571801.6A Active CN110152367B (en) | 2019-06-28 | 2019-06-28 | Energy-concerving and environment-protective sewage filter equipment among power generation system |
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| CN113018943A (en) * | 2021-03-03 | 2021-06-25 | 魏福军 | Waste water filtration treatment device for non-woven fabric processing |
| CN113559596A (en) * | 2021-07-10 | 2021-10-29 | 胡满 | Sewage filtering device |
| CN114849303B (en) * | 2022-04-18 | 2023-12-26 | 中石化宁波工程有限公司 | Municipal administration water supply and drainage sewage treatment device |
| CN114712915B (en) * | 2022-05-16 | 2024-05-24 | 山东科技大学 | Emergency drainage device for coal mining of coal mine |
| CN116835814A (en) * | 2023-08-02 | 2023-10-03 | 深圳市海源生物科技有限公司 | Aquaculture water purification device |
| CN117164110B (en) * | 2023-11-03 | 2024-02-02 | 中国水产科学研究院黄海水产研究所 | Solid phase denitrification baffling reactor |
| CN117547877B (en) * | 2024-01-06 | 2024-03-22 | 文水大有实业有限公司 | Purification device is used in disinfectant production |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204051204U (en) * | 2014-06-26 | 2014-12-31 | 周炳涛 | A kind of commutation filter |
| CN205796730U (en) * | 2016-06-13 | 2016-12-14 | 江苏华宏科技股份有限公司 | Household garbage dewatering passage changement |
| CN207507115U (en) * | 2017-09-22 | 2018-06-19 | 苏州市创耀纺织有限公司 | Water-jet loom sewage recovering system |
| CN207822622U (en) * | 2018-01-08 | 2018-09-07 | 湖北布实非织造布有限公司 | A kind of melt filter |
| CN108714327A (en) * | 2018-06-29 | 2018-10-30 | 惠州市兴邦新材料科技有限公司 | A kind of oil exploitation block-resistant type gravel filter device |
| CN109091925A (en) * | 2018-09-07 | 2018-12-28 | 安顺市西秀区顺大再生资源加工厂 | A kind of high efficiency sewage treatment facility |
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| GR01 | Patent grant |