CN104465162A - Electric load disconnection earthing knife-switch interlocking device - Google Patents
Electric load disconnection earthing knife-switch interlocking device Download PDFInfo
- Publication number
- CN104465162A CN104465162A CN201410822317.3A CN201410822317A CN104465162A CN 104465162 A CN104465162 A CN 104465162A CN 201410822317 A CN201410822317 A CN 201410822317A CN 104465162 A CN104465162 A CN 104465162A
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- casing
- divide
- shut brake
- drive rod
- brake spanner
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- 230000033001 locomotion Effects 0.000 claims description 24
- 238000002955 isolation Methods 0.000 claims description 13
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 230000008054 signal transmission Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/24—Interlocking, locking, or latching mechanisms for interlocking two or more parts of the mechanism for operating contacts
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- Braking Arrangements (AREA)
Abstract
The invention provides an electric load disconnection earthing knife-switch interlocking device, and relates to the field of high pressure switch knife-switch interlocking. The interlocking device aims to be better achieve the knife-switch interlocking function, and the safety and reliability in the knife-switch operation process are guaranteed. The electric load disconnection earthing knife-switch interlocking device comprises a box body, linear electric action devices and a closing/opening brake wrench. The linear electric action devices are fixed in the box body. The box body is fixed to the axial side of a rotating shaft of the closing/opening brake wrench, and the interval between the box body and the closing/opening brake wrench ranges from 20 mm to 30 mm. Drive rods of the linear electric action devices are controlled by an electric signal to move to two stations, wherein one of the station prevents the closing/opening brake wrench from rotating, and the other station allows the closing/opening brake wrench to rotate. The electric load disconnection earthing knife-switch interlocking device is suitable for interlocking of a high-pressure switch knife-switch.
Description
Technical field
The present invention relates to high-voltage switch gear disconnecting link interlocking field.
Background technology
In high-tension line maintenance or maintenance process, need to carry out breaking-closing operating, and in operation often due to artificial or accidental accident, the breaking-closing operating of disconnecting link is made a mistake, especially there is the situation of automatic closing or separating brake, this brings difficulty not only to maintenance and service work, also can bring inconceivable heavy losses simultaneously.
Summary of the invention
The present invention proposes a kind of load isolation grounding switch driven interlocking device, object is can better realize disconnecting link interlock function, and then safety and reliability during guarantee switch operation.
Load isolation grounding switch driven interlocking device comprises casing, straight-line electric movement device and divide-shut brake spanner, described straight-line electric movement device is fixed in casing, casing is fixed on the axial side of the rotating shaft of divide-shut brake spanner, and and gap between described divide-shut brake spanner between 20mm-30mm, the drive rod of straight-line electric movement device moves to two stations under electric signal controls: the first: stop divide-shut brake spanner to rotate, the second: to allow divide-shut brake spanner to rotate.
The straight-line electric movement device of above-mentioned load isolation grounding switch driven interlocking device specifically can be divided into two kinds of structures:
The first straight-line electric movement device comprises electromagnet, armature, two limiting plates, fixed head, two drive rods, supporting bracket, two springs and two baffle plates, described electromagnet is fixed on the interior of casing away from divide-shut brake spanner side, electromagnet is used for adhesive or release armature, described two limiting plates are fixed on the left and right sides of electromagnet, armature reciprocatingly moves along the axis of the rotation axis of divide-shut brake spanner between two limiting plates, the top of armature is provided with fixed head, supporting bracket is closed between the side plate of divide-shut brake spanner at fixed head and casing, and supporting bracket is fixedly connected with casing, one end of two drive rods is fixed on described fixed head, and the axis of each drive rod is all parallel with the rotation axis of divide-shut brake spanner, the other end of described two drive rods closes on the side plate of divide-shut brake spanner side all successively through supporting bracket and casing, when armature is discharged by electromagnet, described drive rod is greater than the gap 10mm-20mm between casing and divide-shut brake spanner in the length of casing outside, when armature is by electromagnetic actuation, described drive rod is retracted to box house, described drive rod is less than the gap 10mm-20mm between casing and divide-shut brake spanner in the length of casing outside, described each drive rod is equipped with a baffle plate, described baffle plate closes between the side plate of divide-shut brake spanner in supporting bracket and casing, on each drive rod, all cover has a spring, the two ends of this spring are pressed between supporting bracket and baffle plate respectively.
The second: straight-line electric movement device comprises two straight-line electric action devices, described two straight-line electric action devices are parallel is fixed on the side plate inside of casing away from divide-shut brake spanner side, the end of the drive rod of two straight-line electric action devices is all through stretching out outside this side plate after the side plate closing on divide-shut brake spanner side, when straight-line electric action device control drive rod to close on divide-shut brake spanner direction move time, described drive rod stretches out to casing outside, described drive rod is greater than the gap 10mm-20mm between casing and divide-shut brake spanner in the length of casing outside, when straight-line electric action device controls drive rod to when moving away from divide-shut brake spanner direction, described drive rod is retracted to box house, described screw rod is less than the gap 10mm-20mm between casing and divide-shut brake spanner in the length of casing outside, each straight-line electric action device includes set casing, electromagnet, armature, drive rod, catch and spring, set casing is enclosed within the outside of electromagnet, with through hole in the middle of described electromagnet, one end of drive rod is inserted in this through hole, the other end of drive rod extends to outside casing through after set casing, drive rod is fixedly connected with armature, drive rod is fixed with catch, catch closes between the sidewall of divide-shut brake spanner at set casing and casing, on each drive rod, all cover has a spring, and the two ends of described spring are pressed on set casing and catch respectively.
Beneficial effect: the present invention has carried out improvement and bring new ideas on the basis of existing disconnecting link interlock, be energized by magnet spool in external equipment straight-line electric movement device, enable electromagnet adhesive or release armature, thus make divide-shut brake spanner form two kinds of stations, namely, when electromagnetic actuation armature, the drive rods extend being in casing outside is made to be reduced in casing, divide-shut brake spanner can clog-freely be rotated, when electromagnet release armature, owing to being in the inhibition of the drive rod of casing outside, divide-shut brake spanner cannot be rotated, realize the locking to divide-shut brake spanner, add original locking mechanism in divide-shut brake spanner, thus obtain better locking effect, more ensure that fail safe during operation.
Accompanying drawing explanation
Fig. 1 and Fig. 2 is the structural representation of the load isolation grounding switch driven interlocking device described in embodiment two; Wherein, Fig. 1 represents the state of the station that the drive rod 5 of straight-line electric movement device stops divide-shut brake spanner to rotate under electric signal controls, and now, two drive rods 5 of straight-line electric movement device stretch out, and be close to divide-shut brake spanner, and then achieve the effect stoping divide-shut brake spanner to rotate; Fig. 2 represents the state of the station that the drive rod 5 of straight-line electric movement device allows divide-shut brake spanner to rotate under electric signal controls, and now, two drive rods 5 of straight-line electric movement device are retracted, and enable divide-shut brake spanner realize rotary motion;
Fig. 3 and Fig. 4 is the structural representation of the load isolation grounding switch driven interlocking device described in embodiment four and five; Wherein, Fig. 3 represents the state of the station that the drive rod 13 of straight-line electric action device 10 stops divide-shut brake spanner to rotate under electric signal controls, and now, the drive rod 13 of straight-line electric action device 10 stretches out, and be close to divide-shut brake spanner, and then achieve the effect stoping divide-shut brake spanner to rotate; Fig. 2 represents the state of the station that the drive rod 13 of straight-line electric action device 10 allows divide-shut brake spanner to rotate under electric signal controls, and now, the drive rod 13 of straight-line electric action device is retracted, and enables divide-shut brake spanner realize rotary motion.
Embodiment
Load isolation grounding switch driven interlocking device described in embodiment one, this embodiment comprises casing 1, straight-line electric movement device and divide-shut brake spanner, described straight-line electric movement device is fixed in casing 1, casing 1 is fixed on the axial side of the rotating shaft of divide-shut brake spanner, and and gap between described divide-shut brake spanner between 20mm-30mm, the drive rod of straight-line electric movement device moves to two stations under electric signal controls: the first: stop divide-shut brake spanner to rotate, the second: to allow divide-shut brake spanner to rotate.
In present embodiment, by the control of external electrical signal, the drive rod of straight-line electric movement device is moved back and forth on the top of divide-shut brake spanner, and then realize whether rotating divide-shut brake spanner limiting, realize Long-distance Control, prevent any moving wrench of Field Force, also can effectively lock the service position of divide-shut brake.
Embodiment two, composition graphs 1 illustrates this embodiment, the difference that this embodiment isolates grounding switch driven interlocking device with the load described in embodiment one is, described straight-line electric movement device comprises electromagnet 8, armature 3, two limiting plates 9, fixed head 4, two drive rods 5, supporting bracket 6, two springs 7 and two baffle plates 8, described electromagnet 8 is fixed on the interior of casing 1 away from divide-shut brake spanner side, electromagnet 8 is for adhesive or release armature 3, described two limiting plates 9 are fixed on the left and right sides of electromagnet 8, armature 3 reciprocatingly moves along the axis of the rotation axis of divide-shut brake spanner between two limiting plates 9, the top of armature 3 is provided with fixed head 4, supporting bracket 6 is closed between the side plate of divide-shut brake spanner at fixed head 4 and casing 1, and supporting bracket 6 is fixedly connected with casing 1, one end of two drive rods 5 is fixed on described fixed head 4, and the axis of each drive rod 5 is all parallel with the rotation axis of divide-shut brake spanner, the other end of described two drive rods 5 closes on the side plate of divide-shut brake spanner side all successively through supporting bracket 6 and casing 1, when armature 3 is discharged by electromagnet 8, described drive rod 5 is greater than the gap 10mm-20mm between casing 1 and divide-shut brake spanner in the length of casing 1 outside, when armature 3 is by electromagnet 8 adhesive, described drive rod 5 is retracted to casing 1 inside, described drive rod 5 is less than the gap 10mm-20mm between casing 1 and divide-shut brake spanner in the length of casing 1 outside, described each drive rod 5 is equipped with a baffle plate 8, described baffle plate 8 closes between the side plate of divide-shut brake spanner in supporting bracket 6 and casing 1, on each drive rod 5, all cover has a spring 7, the two ends of this spring 7 are pressed between supporting bracket 6 and baffle plate 8 respectively.
In present embodiment, external equipment passes through the coil electricity in electromagnet 8, make electromagnet 8 adhesive armature, armature drives drive rod 5 to move to the direction away from divide-shut brake spanner, until the position that drive rod 5 is retracted can make divide-shut brake spanner freely rotate, thus can operate divide-shut brake spanner, when external equipment makes coil blackout, armature is due to the reaction force of spring, drive rod 5 is moved to the side closing on divide-shut brake spanner, until the part that drive rod 5 is positioned at casing 1 outside is positioned at the top of divide-shut brake spanner, thus realize the object hindering the rotation of divide-shut brake spanner, also achieve the locking position to divide-shut brake spanner simultaneously.
The difference that load described in embodiment three, this embodiment and embodiment two isolates grounding switch driven interlocking device is, it also comprises multiple binding post, described multiple binding post is fixed in casing 1, and coil realizes Signal transmissions by binding post and external equipment.
Embodiment four, composition graphs 2 illustrates this embodiment, the difference that this embodiment isolates grounding switch driven interlocking device with the load described in embodiment one is, described straight-line electric movement device comprises two straight-line electric action devices 10, described two straight-line electric action devices 10 are parallel is fixed on the side plate inside of casing 1 away from divide-shut brake spanner side, the end of the drive rod of two straight-line electric action devices 10 is all through stretching out outside this side plate after the side plate closing on divide-shut brake spanner side, when straight-line electric action device 10 control drive rod to close on divide-shut brake spanner direction move time, described drive rod stretches out to casing outside, described drive rod is greater than the gap 10mm-20mm between casing 1 and divide-shut brake spanner in the length of casing 1 outside, when straight-line electric action device 10 controls drive rod to when moving away from divide-shut brake spanner direction, described drive rod is retracted to casing 1 inside, described drive rod is less than the gap 10mm-20mm between casing 1 and divide-shut brake spanner in the length of casing 1 outside.
In present embodiment, external equipment is by being energized to two straight-line electric action devices 10, straight-line electric action device 10 is made to drive drive rod to move reciprocatingly, when straight-line electric action device drives drive rod to move also until the position that drive rod is retracted can make divide-shut brake spanner freely rotate to the direction away from divide-shut brake spanner, thus can operate divide-shut brake spanner, when external equipment makes straight-line electric action device power-off, due to the reaction force of spring, drive rod is moved to the side closing on divide-shut brake spanner, until the part that drive rod is positioned at casing 1 outside is positioned at the top of divide-shut brake spanner, thus realize the object hindering the rotation of divide-shut brake spanner, also achieve the locking position to divide-shut brake spanner simultaneously.
Embodiment five, composition graphs 2 illustrates this embodiment, the difference that this embodiment isolates grounding switch driven interlocking device with the load described in embodiment four is, described straight-line electric action device 10 comprises set casing 12, electromagnet 11, armature, drive rod 13, catch 15 and spring 14, set casing 12 is enclosed within the outside of electromagnet 11, with through hole in the middle of described electromagnet 11, one end of drive rod 13 is inserted in this through hole, the other end of drive rod 13 extends to outside casing through after set casing 12, drive rod 13 is fixedly connected with armature, drive rod 13 is fixed with catch 15, catch 15 closes between the sidewall of divide-shut brake spanner at set casing 12 and casing 1, on each drive rod 13, all cover has a spring 14, the two ends of described spring 14 are pressed on set casing 12 and catch 15 respectively.
In present embodiment, external equipment passes through the coil electricity in electromagnet 11, make electromagnet 11 adhesive armature, armature drives drive rod 13 to move to the direction away from divide-shut brake spanner, until the position that drive rod 13 is retracted can make divide-shut brake spanner freely rotate, thus can operate divide-shut brake spanner, when external equipment makes coil blackout, armature is due to the reaction force of spring, drive rod 13 is moved to the side closing on divide-shut brake spanner, until the part that drive rod 13 is positioned at casing 1 outside is positioned at the top of divide-shut brake spanner, thus realize the object hindering the rotation of divide-shut brake spanner, also achieve the locking position to divide-shut brake spanner simultaneously.
The difference that load described in embodiment six, this embodiment and embodiment four or five isolates grounding switch driven interlocking device is, it also comprises multiple binding post, described multiple binding post is fixed in casing 1, two straight-line electric action devices 10 all realize Signal transmissions by binding post and external equipment, and two straight-line electric action devices 10 realize interlock by binding post.
In present embodiment, the obstruction to the rotation of divide-shut brake spanner or permission could be realized after external equipment is all energized to two straight-line electric action devices 10, more ensure that reliability and the fail safe of this device.
The difference that load described in embodiment seven, this embodiment and embodiment two or four isolates grounding switch driven interlocking device is, the operating voltage of described electromagnet is AC220V.
The difference that load described in embodiment eight, present embodiment and embodiment one isolates grounding switch driven interlocking device is, it also comprises travel switch 16, described travel switch 16 is fixed on casing 1 and closes on the avris of the sidewall of divide-shut brake spanner, whether is in off-state for detecting divide-shut brake spanner.
In present embodiment, whether be in off-state by travel switch 16 pairs of divide-shut brake spanners and detect, thus can remote detection be realized.
Claims (6)
1. load isolation grounding switch driven interlocking device, it is characterized in that, it comprises casing (1), straight-line electric movement device and divide-shut brake spanner, described straight-line electric movement device is fixed in casing (1), casing (1) is fixed on the axial side of the rotating shaft of divide-shut brake spanner, and and gap between described divide-shut brake spanner between 20mm-30mm, the drive rod of straight-line electric movement device moves to two stations under electric signal controls: the first: stop divide-shut brake spanner to rotate, the second: to allow divide-shut brake spanner to rotate.
2. load isolation grounding switch driven interlocking device according to claim 1, it is characterized in that, described straight-line electric movement device comprises electromagnet (8), armature (3), two limiting plates (9), fixed head (4), two drive rods (5), supporting bracket (6), two springs (7) and two baffle plates (8), described electromagnet (8) is fixed on the interior of casing (1) away from divide-shut brake spanner side, electromagnet (8) is for adhesive or release armature (3), described two limiting plates (9) are fixed on the left and right sides of electromagnet (8), the axis of armature (3) along the rotation axis of divide-shut brake spanner between two limiting plates (9) reciprocatingly moves, the top of armature (3) is provided with fixed head (4), supporting bracket (6) is positioned at fixed head (4) and casing (1) closes between the side plate of divide-shut brake spanner, and supporting bracket (6) is fixedly connected with casing (1), one end of two drive rods (5) is fixed on described fixed head (4), and the axis of each drive rod (5) is all parallel with the rotation axis of divide-shut brake spanner, the other end of described two drive rods (5) closes on the side plate of divide-shut brake spanner side all successively through supporting bracket (6) and casing (1), when armature (3) is discharged by electromagnet (8), described drive rod (5) is positioned at the outside length of casing (1) and is greater than gap 10mm-20mm between casing (1) and divide-shut brake spanner, when armature (3) is by electromagnet (8) adhesive, described drive rod (5) is retracted to casing (1) inside, described drive rod (5) is positioned at the outside length of casing (1) and is less than gap 10mm-20mm between casing (1) and divide-shut brake spanner, described each drive rod (5) is equipped with a baffle plate (8), described baffle plate (8) is positioned at supporting bracket (6) and casing (1) closes between the side plate of divide-shut brake spanner, on each drive rod (5), all cover has a spring (7), the two ends of this spring (7) are pressed between supporting bracket (6) and baffle plate (8) respectively.
3. load isolation grounding switch driven interlocking device according to claim 2, it is characterized in that, it also comprises multiple binding post, and described multiple binding post is fixed in casing (1), and coil realizes Signal transmissions by binding post and external equipment.
4. load isolation grounding switch driven interlocking device according to claim 1, it is characterized in that, described straight-line electric movement device comprises two straight-line electric action devices (10), described two straight-line electric action devices (10) are parallel is fixed on the side plate inside of casing (1) away from divide-shut brake spanner side, the end of the drive rod of two straight-line electric action devices (10) is all through stretching out outside this side plate after the side plate closing on divide-shut brake spanner side, when straight-line electric action device (10) control drive rod to close on divide-shut brake spanner direction move time, described drive rod casing outside is stretched out, described drive rod is positioned at the outside length of casing (1) and is greater than gap 10mm-20mm between casing (1) and divide-shut brake spanner, when straight-line electric action device (10) controls drive rod to when moving away from divide-shut brake spanner direction, described drive rod is retracted to casing (1) inside, described drive rod is positioned at the outside length of casing (1) and is less than gap 10mm-20mm between casing (1) and divide-shut brake spanner.
5. load isolation grounding switch driven interlocking device according to claim 4, it is characterized in that, described straight-line electric action device (10) comprises set casing (12), electromagnet (11), armature, drive rod (13), catch (15) and spring (14), set casing (12) is enclosed within the outside of electromagnet (11), with through hole in the middle of described electromagnet (11), one end of drive rod (13) is inserted in this through hole, the other end of drive rod (13) extends to outside casing through after set casing (12), drive rod (13) is fixedly connected with armature, drive rod (13) is fixed with catch (15), catch (15) is positioned at set casing (12) and casing (1) closes between the sidewall of divide-shut brake spanner, on each drive rod (13), all cover has a spring (14), the two ends of described spring (14) are pressed on set casing (12) and catch (15) respectively.
6. the load isolation grounding switch driven interlocking device according to claim 4 or 5, it is characterized in that, it also comprises multiple binding post, described multiple binding post is fixed in casing (1), two straight-line electric action devices (10) all realize Signal transmissions by binding post and external equipment, and two straight-line electric action devices (10) realize interlock by binding post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410822317.3A CN104465162B (en) | 2014-12-24 | 2014-12-24 | Electric load disconnection earthing knife-switch interlocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410822317.3A CN104465162B (en) | 2014-12-24 | 2014-12-24 | Electric load disconnection earthing knife-switch interlocking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104465162A true CN104465162A (en) | 2015-03-25 |
| CN104465162B CN104465162B (en) | 2017-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410822317.3A Expired - Fee Related CN104465162B (en) | 2014-12-24 | 2014-12-24 | Electric load disconnection earthing knife-switch interlocking device |
Country Status (1)
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| CN (1) | CN104465162B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107731608A (en) * | 2017-11-08 | 2018-02-23 | 北京北开电气股份有限公司 | A kind of high-voltage isulation multi-turn drive mechanism |
| CN110384959A (en) * | 2019-07-02 | 2019-10-29 | 广州市欧树环保科技有限公司 | A kind of heavy duty detergent flocculation sedimentation equipment being convenient to clean for sewage treatment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6958456B1 (en) * | 2004-08-25 | 2005-10-25 | Eaton Corporation | Positive locking, trigger grip, external operating handle assembly for network protector enclosures |
| CN202373485U (en) * | 2011-12-28 | 2012-08-08 | 黑龙江省电力有限公司齐齐哈尔超高压公司 | Switching operation protector for substation |
| CN203445024U (en) * | 2013-08-09 | 2014-02-19 | 西门子（上海）电气传动设备有限公司 | Locking device of earthing switch and earthing switch comprising same |
| CN204348548U (en) * | 2014-12-24 | 2015-05-20 | 国家电网公司 | Load isolation grounding switch driven interlocking device |
-
2014
- 2014-12-24 CN CN201410822317.3A patent/CN104465162B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6958456B1 (en) * | 2004-08-25 | 2005-10-25 | Eaton Corporation | Positive locking, trigger grip, external operating handle assembly for network protector enclosures |
| CN202373485U (en) * | 2011-12-28 | 2012-08-08 | 黑龙江省电力有限公司齐齐哈尔超高压公司 | Switching operation protector for substation |
| CN203445024U (en) * | 2013-08-09 | 2014-02-19 | 西门子（上海）电气传动设备有限公司 | Locking device of earthing switch and earthing switch comprising same |
| CN204348548U (en) * | 2014-12-24 | 2015-05-20 | 国家电网公司 | Load isolation grounding switch driven interlocking device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107731608A (en) * | 2017-11-08 | 2018-02-23 | 北京北开电气股份有限公司 | A kind of high-voltage isulation multi-turn drive mechanism |
| CN107731608B (en) * | 2017-11-08 | 2024-04-12 | 北京北开电气股份有限公司 | High-voltage insulation multi-circle transmission structure |
| CN110384959A (en) * | 2019-07-02 | 2019-10-29 | 广州市欧树环保科技有限公司 | A kind of heavy duty detergent flocculation sedimentation equipment being convenient to clean for sewage treatment |
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| Publication number | Publication date |
|---|---|
| CN104465162B (en) | 2017-01-18 |
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Granted publication date: 20170118 |