CN107904639B - Fluid distribution mechanism and method for piston anodic oxidation - Google Patents
Fluid distribution mechanism and method for piston anodic oxidation Download PDFInfo
- Publication number
- CN107904639B CN107904639B CN201711371725.1A CN201711371725A CN107904639B CN 107904639 B CN107904639 B CN 107904639B CN 201711371725 A CN201711371725 A CN 201711371725A CN 107904639 B CN107904639 B CN 107904639B
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- China
- Prior art keywords
- guide pipe
- distribution block
- pipe
- valve
- piston
- 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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Links
- 238000009826 distribution Methods 0.000 title claims abstract description 97
- 230000007246 mechanism Effects 0.000 title claims abstract description 19
- 239000012530 fluid Substances 0.000 title claims abstract description 13
- 230000003647 oxidation Effects 0.000 title claims abstract description 6
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 6
- 238000000034 method Methods 0.000 title abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 7
- 238000002048 anodisation reaction Methods 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 abstract description 9
- 239000001301 oxygen Substances 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 4
- 239000003814 drug Substances 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000005465 channeling Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000007743 anodising Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000007774 longterm Effects 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
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/06—Suspending or supporting devices for articles to be coated
- C25D17/08—Supporting racks, i.e. not for suspending
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention relates to the technical field of piston production, in particular to a fluid distribution mechanism and method for piston anodic oxidation. Comprises a first guide pipe and a second guide pipe; a flow dividing valve matched with the flow guiding pipe is arranged at the lower end of the flow guiding pipe; the lower end of the second flow guide pipe is provided with a flow dividing valve matched with the second flow guide pipe; the first guide pipe and the second guide pipe are driven to move by a transmission mechanism; the first diversion pipe is provided with a liquid return hole, and a diverter valve at the lower end of the diversion pipe is provided with an interface connection corresponding to the liquid return hole; and the second flow guide pipe is provided with a liquid inlet, and the diverter valve at the lower end of the second flow guide pipe is provided with an interface connection corresponding to the liquid inlet. The invention has the advantages of high utilization rate of space and liquid medicine, simple integral structure, good sealing performance, durability, easy adjustment, safe and sanitary working environment, and can fix the piston in the fixture, and the cleaning liquid and the hard oxygen liquid can automatically circulate in the fixture according to the process time, thereby realizing the automatic production of the hard oxygen of the piston, greatly improving the production efficiency and reducing the labor intensity of workers.
Description
Field of the art
The invention relates to the technical field of piston production, in particular to a fluid distribution mechanism and method for piston anodic oxidation.
(II) background art
As the power of the engine increases, thermal and mechanical stresses on the piston increase, cracking (thermal cracking) tends to occur around the combustion chamber at the top of the piston, which has become an important factor affecting the quality of the aluminum alloy piston. Experiments and use prove that: hard anodizing is a very effective method for inhibiting heat cracks, and has become one of the normal methods for treating piston surfaces.
At present, in domestic similar equipment, the utilization rate of the layout space of a group of groove bodies for six groups of stations side by side is low, and the waste of liquid medicine is also caused; the hard oxygen clamp adopts the inflation sealing, the tool is easy to wear and leak air due to frequent contact and friction between the sealing ring and the piston, so that the quality of the hard oxygen of the piston is unqualified, the sealing ring is made of nonstandard special materials, the cost is high, and the investment cost for long-term use is too high, so that the hard oxygen clamp is not suitable for the production of mass products; the servo motor drives the fluid distributor of gear rotating structure, need the honeycomb duct all around to bore a plurality of wash ports in different directions, have several grooves just need several holes, this will cause the pipe diameter to increase and lead to whole distribution mechanism overall dimension great, occupation space is great, appear comparatively heavy. Meanwhile, the structure has a plurality of holes, is difficult to seal, has high risk of liquid channeling, and is difficult to find when the problem of liquid channeling occurs; a diaphragm pump is connected with a flowmeter, and the flowmeter controls two sets of hard oxygen clamps, so that when the flow is in a problem, the problem of which set of tool is the problem cannot be reflected. In summary, the above problems have an effect on the hard oxygen quality of the surface of the piston.
(III) summary of the invention
The invention provides a fluid distribution mechanism and a method for piston anodic oxidation in order to make up for the defects of the prior art.
The invention is realized by the following technical scheme:
a fluid dispensing mechanism and method for piston anodization, characterized by: comprises a first guide pipe and a second guide pipe; a flow dividing valve matched with the flow guiding pipe is arranged at the lower end of the flow guiding pipe; the lower end of the second flow guide pipe is provided with a flow dividing valve matched with the second flow guide pipe; the first guide pipe and the second guide pipe are driven to move by a transmission mechanism; the first diversion pipe is provided with a liquid return hole, and a diverter valve at the lower end of the diversion pipe is provided with an interface connection corresponding to the liquid return hole; and the second flow guide pipe is provided with a liquid inlet, and the diverter valve at the lower end of the second flow guide pipe is provided with an interface connection corresponding to the liquid inlet.
Further, the transmission mechanism comprises a servo motor, and the servo motor is fixed on the motor fixing plate; the rotating shaft of the servo motor passes through the motor fixing plate and is connected with the coupler; the coupler is connected with the screw rod; the end part of the screw rod is connected with a bearing, and the bearing is positioned in a bearing sleeve fixed on the supporting plate; the screw rod is provided with a screw rod nut, the screw rod nut is fixed in the middle of the guide pipe fixing plate, and the two ends of the guide pipe fixing plate are respectively fixed with a guide pipe I and a guide pipe II; two ends of the supporting plate are respectively connected with the supporting rods, and the other ends of the supporting rods are fixedly connected with the motor fixing plate; and a detection switch bracket positioned at the upper end of the screw rod is arranged between the support plate and the motor fixing plate, and a proximity switch is arranged on the detection switch bracket. And the proximity switch and the servo motor are respectively connected with the PLC.
Further, the diverter valve comprises a diverter valve I, a diverter valve II and a diverter valve III.
Further, the motor fixing plate is fixedly provided with a first distribution block end cover at the lower end position of the first guide pipe and the second guide pipe respectively, and the first distribution block end cover, the first distribution pipe valve, the second distribution pipe valve, the third distribution pipe valve and the second distribution block end cover are sequentially arranged; the outer cover of the distribution block end cover is provided with a distribution block clamping plate, and the distribution block clamping plate is connected with the motor fixing plate through a distribution block fixing rod.
Furthermore, a dustproof sealing ring is fixed on the first distribution block end cover and the second distribution block end cover.
Further, the first shunt tube valve comprises a first distribution block, an elbow, a tube joint and a PP tube; the second shunt valve comprises a second distribution block, an elbow, a pipe joint and a PP pipe; the third shunt valve comprises a third distribution block, an elbow, a pipe joint and a PP pipe.
Further, the first guide pipe passes through the first distribution block, the second distribution block and the third distribution block respectively; two ends of the joint of the first guide pipe and the first distribution block, the second distribution block and the third distribution block are respectively provided with a sealing ring for a shaft; the second flow guide pipe passes through the first distribution block, the second distribution block and the third distribution block respectively; and sealing rings for shafts are respectively arranged at two ends of the joint of the second guide pipe and the first distribution block, and at two ends of the joint of the second distribution block and the third distribution block.
Further, annular grooves are arranged among the adjacent first distribution block, the adjacent second distribution block and the adjacent third distribution block, and O-shaped rings are arranged in the annular grooves.
Further, the first shunt tube valve, the second shunt tube valve and the third shunt tube valve are fixed through a tube clamp.
The beneficial effects of the invention are as follows: the invention has the advantages of high utilization rate of space and liquid medicine, simple integral structure, good sealing performance, durability, easy adjustment, safe and sanitary working environment, and can fix the piston in the fixture, and the cleaning liquid and the hard oxygen liquid can automatically circulate in the fixture according to the process time, thereby realizing the automatic production of the hard oxygen of the piston, greatly improving the production efficiency and reducing the labor intensity of workers.
(IV) description of the drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a front view of the overall assembly of the present invention;
FIG. 2 is an overall assembled top view of the present invention;
FIG. 3 is a bottom view of the overall assembly of the present invention;
FIG. 4 is a right side view of the overall assembly of the present invention;
FIG. 5 is an overall assembled cross-sectional view of the present invention;
FIG. 6 is an overall assembled cross-sectional view of the present invention;
FIG. 7 is an enlarged view of the entire assembly of the present invention;
FIG. 8 is a first manifold valve of the present invention;
FIG. 9 is a second manifold valve of the present invention;
FIG. 10 is a third diverter valve of the present invention;
FIG. 11 is a cross-sectional view of a draft tube of the present invention;
FIG. 12 is a second cross-sectional view of a draft tube of the present invention;
in the figure, a servo motor, a motor fixing plate 2, a coupling 3, a lead screw 4, a lead screw nut 5, a nut fixing flange 6, a honeycomb duct fixing plate 7, a bearing 8, a bearing sleeve 9, a support plate 10, a support 11, a pipe clamp 12, a distributing block fixing rod 13, a distributing block clamping plate 14, a detecting switch support 15, a support rod 16, a ring 17O, a sealing ring for 18 shafts, a dustproof sealing ring 19, a distributing block end cover 20, a distributing block end cover 21, a distributing block end cover 22, a distributing block one, a 23 elbow, a 24 pipe joint, a 25 PP pipe, a distributing block 26, a distributing block 27, a honeycomb duct 28, a honeycomb duct 29, a distributing pipe valve 30, a distributing pipe valve 31, a distributing pipe valve 32, a liquid return hole 33 and a liquid inlet 34.
(fifth) detailed description of the invention
The drawings illustrate one embodiment of the invention. This embodiment includes a first draft tube 28, a second draft tube 29; the lower end of the first guide pipe 28 is provided with a flow dividing valve matched with the first guide pipe; the lower end of the second guide pipe 29 is provided with a flow dividing valve matched with the second guide pipe; the first guide pipe 28 and the second guide pipe 29 are driven to move through a transmission mechanism; the first diversion pipe 28 is provided with a liquid return hole 33, and a diverter valve at the lower end of the first diversion pipe 28 is provided with a connector corresponding to the liquid return hole 33; the second guide pipe 29 is provided with a liquid inlet 34, and a diverter valve at the lower end of the second guide pipe 29 is provided with an interface connection corresponding to the liquid inlet 34.
Further, the transmission mechanism comprises a servo motor 1, and the servo motor 1 is fixed on a motor fixing plate 2; the rotating shaft of the servo motor 1 passes through the motor fixing plate 2 and is connected with the coupler 3; the coupler 3 is connected with the screw rod 4; the end part of the screw rod 4 is connected with a bearing 8, and the bearing 8 is positioned in a bearing sleeve 9 fixed on a supporting plate 10; the screw rod 4 is provided with a screw rod nut 5, the screw rod nut 5 is fixed at the middle part of the flow guide pipe fixing plate 7 through a nut fixing flange 6, and two ends of the flow guide pipe fixing plate 7 are respectively fixed with a first flow guide pipe 28 and a second flow guide pipe 29; the two ends of the supporting plate 10 are respectively connected with a supporting rod 16, and the other end of the supporting rod 16 is fixedly connected with the motor fixing plate 2; a detection switch bracket 15 positioned at the upper end of the screw rod 4 is arranged between the support plate 10 and the motor fixing plate 2, and a proximity switch is arranged on the detection switch bracket 15. The proximity switch and the servo motor 1 are respectively connected with the PLC.
Further, the diverter valve includes a first diverter valve 30, a second diverter valve 31, and a third diverter valve 32.
Further, the motor fixing plate 2 is positioned at the lower ends of the first guide pipe 28 and the second guide pipe 29 and is respectively fixed with a first distribution block end cover 20, and the first distribution block end cover 20, the first distribution pipe valve 30, the second distribution pipe valve 31, the third distribution pipe valve 32 and the second distribution block end cover 21 are sequentially arranged; the outer side of the second distributing block end cover 21 is provided with a distributing block clamping plate 14, and the distributing block clamping plate 14 is connected with the motor fixing plate 2 through a distributing block fixing rod 13.
Further, a dustproof sealing ring 19 is fixed on the first distribution block end cover 20 and the second distribution block end cover 21.
Further, the first shunt valve 30 comprises a first distributing block 22, an elbow 23, a pipe joint 24 and a PP pipe 25; the second shunt valve 31 comprises a second distribution block 26, an elbow 23, a pipe joint 24 and a PP pipe 25; the third shunt valve 32 comprises a third distribution block 27, an elbow 23, a pipe joint 24 and a pp pipe 25.
Further, the first flow guiding pipe 28 passes through the first distribution block 22, the second distribution block 26 and the third distribution block 27 respectively; two ends of the joint of the first guide pipe 28 and the first distribution block 22, the second distribution block 26 and the third distribution block 27 are respectively provided with a sealing ring 18 for a shaft; the second guide pipe 29 passes through the first distribution block 22, the second distribution block 26 and the third distribution block 27 respectively; and sealing rings 18 for shafts are respectively arranged at two ends of the joint of the second guide pipe 29 and the first distribution block 22, the second distribution block 26 and the third distribution block 27.
Further, annular grooves are arranged among the adjacent first distribution block 22, the adjacent second distribution block 26 and the adjacent third distribution block 27, and O-shaped rings 17 are arranged in the annular grooves.
Further, the first shunt valve 30, the second shunt valve 31 and the third shunt valve 32 are fixed by the pipe clamp 12.
Wherein, the proximity switch provides 0-point detection for the servo motor 11, the tail ends of the first guide pipe 28 and the second guide pipe 29 are fixed on the guide pipe fixing plate 7, so that the motor screw 4 drives the first guide pipe 28 and the second guide pipe 29 to move simultaneously, the first distribution block end cover 20, the first distribution pipe valve 30, the second distribution pipe valve 31, the third distribution pipe valve 32 and the second distribution block end cover 21 are sequentially arranged and clamped between the motor fixing plate 2 and the distribution block clamping plate 14, the first guide pipe 28 and the second guide pipe 29 are respectively inserted into the two groups of pipe valves, and no leakage is ensured when the first guide pipe 28 and the second guide pipe 29 move through the dustproof sealing rings 19 fixed on the first distribution block end cover 20 and the second distribution block end cover 21 and the O-shaped rings 17 and the shaft sealing rings 18 fixed on the first distribution block 22 and the second distribution block 26, the motor fixing plate 2 and the distributing block clamping plate 14 are connected into a whole by utilizing a distributing block fixing rod 13, the supporting plate 10 and the motor fixing plate 2 are connected into a whole by utilizing a supporting rod 16, the outlets of the two groups of distributing pipe valves I30, the distributing pipe valve II 31 and the distributing pipe valve III 32 are fixed by utilizing pipe clamps 12, the outlets of the two groups of distributing pipe valves I30, the distributing pipe valve II 31 and the distributing pipe valve III 32 are connected into various process grooves, when the servo motor 1 drives the screw rod 4 to rotate, the first guide pipe 28 and the second guide pipe 29 move simultaneously, when the holes below the first guide pipe 28 and the second guide pipe 29 are identical with the holes below different distributing blocks, different process grooves are connected into a loop, and the fluid distributor part is fixed on a main frame through the bracket 11;
the first guide pipe 28 and the second guide pipe 29, wherein the first guide pipe 28 is a water return pipe and is used for being connected with a water return pipeline, the second guide pipe 29 is a water suction pipe and is used for being connected with a water suction pipeline, the first guide pipe 28 and the second guide pipe 29 are made of 316L stainless steel, and a hole is formed in the bottom of the first guide pipe and is used for being connected with a loop.
The present invention has been described above by way of example, but the present invention is not limited to the above-described embodiments, and any modifications or variations based on the present invention fall within the scope of the present invention.
Claims (5)
1. A fluid dispensing mechanism for anodic oxidation of a piston, characterized by: comprises a first guide pipe and a second guide pipe; a flow dividing valve matched with the flow guiding pipe is arranged at the lower end of the flow guiding pipe; the lower end of the second flow guide pipe is provided with a flow dividing valve matched with the second flow guide pipe; the first guide pipe and the second guide pipe are driven to move by a transmission mechanism; the first diversion pipe is provided with a liquid return hole, and a diverter valve at the lower end of the diversion pipe is provided with an interface connection corresponding to the liquid return hole; the second flow guide pipe is provided with a liquid inlet, the flow dividing valve at the lower end of the second flow guide pipe is provided with an interface connection corresponding to the liquid inlet,
the transmission mechanism comprises a servo motor which is fixed on the motor fixing plate; the rotating shaft of the servo motor passes through the motor fixing plate and is connected with the coupler; the coupler is connected with the screw rod; the end part of the screw rod is connected with a bearing, and the bearing is positioned in a bearing sleeve fixed on the supporting plate; the screw rod is provided with a screw rod nut, the screw rod nut is fixed in the middle of the guide pipe fixing plate, and the two ends of the guide pipe fixing plate are respectively fixed with a guide pipe I and a guide pipe II; two ends of the supporting plate are respectively connected with the supporting rods, the other ends of the supporting rods are fixedly connected with the motor fixing plate,
the diverter valve comprises a diverter valve I, a diverter valve II, a diverter valve III,
the motor fixing plate is positioned at the lower ends of the first guide pipe and the second guide pipe and is respectively fixedly provided with a first distribution block end cover, and the first distribution block end cover, the first split pipe valve, the second split pipe valve, the third split pipe valve and the second distribution block end cover are sequentially arranged; the outer cover of the distribution block end cover is provided with a distribution block clamping plate which is connected with the motor fixing plate through a distribution block fixing rod,
the first shunt tube valve comprises a first distribution block, an elbow, a tube joint and a PP tube; the second shunt valve comprises a second distribution block, an elbow, a pipe joint and a PP pipe; the shunt valve III comprises a distribution block III, an elbow, a pipe joint and a PP pipe,
the first guide pipe passes through the first distribution block, the second distribution block and the third distribution block respectively; two ends of the joint of the first guide pipe and the first distribution block, the second distribution block and the third distribution block are respectively provided with a sealing ring for a shaft; the second flow guide pipe passes through the first distribution block, the second distribution block and the third distribution block respectively; and sealing rings for shafts are respectively arranged at two ends of the joint of the second guide pipe and the first distribution block, and at two ends of the joint of the second distribution block and the third distribution block.
2. The fluid dispensing mechanism for piston anodization of claim 1, wherein: and a detection switch bracket positioned at the upper end of the screw rod is arranged between the support plate and the motor fixing plate, and a proximity switch is arranged on the detection switch bracket.
3. The fluid dispensing mechanism for piston anodization of claim 2 wherein: and a dustproof sealing ring is fixed on the first distribution block end cover and the second distribution block end cover.
4. A fluid dispensing mechanism for piston anodization as in claim 3 wherein: annular grooves are arranged among the adjacent first distribution block, the adjacent second distribution block and the adjacent third distribution block, and O-shaped rings are arranged in the annular grooves.
5. The fluid dispensing mechanism for piston anodization of claim 4, wherein: and the first shunt tube valve, the second shunt tube valve and the third shunt tube valve are fixed through a tube clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711371725.1A CN107904639B (en) | 2017-12-19 | 2017-12-19 | Fluid distribution mechanism and method for piston anodic oxidation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711371725.1A CN107904639B (en) | 2017-12-19 | 2017-12-19 | Fluid distribution mechanism and method for piston anodic oxidation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107904639A CN107904639A (en) | 2018-04-13 |
| CN107904639B true CN107904639B (en) | 2023-10-27 |
Family
ID=61870398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711371725.1A Active CN107904639B (en) | 2017-12-19 | 2017-12-19 | Fluid distribution mechanism and method for piston anodic oxidation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107904639B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2286511Y (en) * | 1997-04-29 | 1998-07-22 | 宝山钢铁(集团)公司 | Surface contact type pipe joint device |
| CN101678946A (en) * | 2007-05-29 | 2010-03-24 | 约翰·梅林·柯普斯登-布鲁斯 | valve and dispenser |
| CN102665928A (en) * | 2009-12-09 | 2012-09-12 | 瓦卢瓦有限合伙公司 | Head for dispensing fluid material |
| CN203999012U (en) * | 2014-08-07 | 2014-12-10 | 黄山锦峰实业有限公司 | Waste water collection device |
-
2017
- 2017-12-19 CN CN201711371725.1A patent/CN107904639B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2286511Y (en) * | 1997-04-29 | 1998-07-22 | 宝山钢铁(集团)公司 | Surface contact type pipe joint device |
| CN101678946A (en) * | 2007-05-29 | 2010-03-24 | 约翰·梅林·柯普斯登-布鲁斯 | valve and dispenser |
| CN102665928A (en) * | 2009-12-09 | 2012-09-12 | 瓦卢瓦有限合伙公司 | Head for dispensing fluid material |
| CN203999012U (en) * | 2014-08-07 | 2014-12-10 | 黄山锦峰实业有限公司 | Waste water collection device |
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| Publication number | Publication date |
|---|---|
| CN107904639A (en) | 2018-04-13 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20230921 Address after: 256602 no.569, Bohai 21 Road, Bincheng District, Binzhou City, Shandong Province Applicant after: BINZHOU BOHAI PRECISION MACHINERY Co.,Ltd. Applicant after: BINZHOU BOHAI PISTON Co.,Ltd. Address before: 569 Bohai 21st Road, Binzhou City, Shandong Province, 256600 Applicant before: BINZHOU BOHAI PRECISION MACHINERY Co.,Ltd. |
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