CN104564680A - Vacuum pump of dynamic balancing slide valve - Google Patents
Vacuum pump of dynamic balancing slide valve Download PDFInfo
- Publication number
- CN104564680A CN104564680A CN201510010317.8A CN201510010317A CN104564680A CN 104564680 A CN104564680 A CN 104564680A CN 201510010317 A CN201510010317 A CN 201510010317A CN 104564680 A CN104564680 A CN 104564680A
- Authority
- CN
- China
- Prior art keywords
- pump
- chamber
- pump shaft
- eccentric wheel
- vacuum pump
- 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.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 239000002828 fuel tank Substances 0.000 claims description 22
- 230000000903 blocking effect Effects 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/40—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and having a hinged member
- F04C18/46—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and having a hinged member with vanes hinged to the outer member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
- F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0021—Systems for the equilibration of forces acting on the pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention relates to a vacuum pump of a dynamic balancing slide valve. The vacuum pump comprises a pump body, a pump shaft and slide valve eccentric wheel mechanisms which are mounted on the pump shaft, wherein the inner cavity of the pump body is divided into three independent chambers, the middle chamber is a central chamber, the chamber which is arranged next to the central chamber and close to a sealing end of the pump shaft is a sealing end chamber, and the chamber which is close to the extending end of the pump shaft is an opened end chamber; three slide valve eccentric wheel mechanisms are arranged on the pump shaft and are respectively mounted in three independently chambers. The vacuum pump provided by the invention has the beneficial effects that by adopting three slide valve eccentric wheel mechanisms, the problem of operating dynamic balance of the pump is thoroughly solved as the centrifugal force and the gravity cancel each other out when the slide valve mechanisms operate; when the long air cylinder inhales, short air cylinders on two sides breathe to realize dynamic balance of the pump which rotates at a high speed, the bearing force of the pump shaft is further greatly reduced, and secondary inhalation and exhaust can be realized by rotating the pump shaft for one revolution. A motor is mounted on the top of an oil tank of the valve pump of the slide valve, so that a huge chassis of the existing product is canceled, the occupied area is reduced and the weight is reduced.
Description
Technical field
The present invention relates to a kind of dynamic balancing sliding valve vacuum pump.
Background technique
Sliding valve vacuum pump is one of most widely used vacuum pump in the current whole world, be mainly used in suction or conveying air and other clean gas and to sliding valve vacuum pump recycle oil without destruction and containing in the special gas of certain dust or the technique of condensable gas.The application of sliding valve vacuum pump almost spreads all trades and professions in all kinds of techniques that all needs vacuumize.
Sliding valve vacuum pump is primarily of component compositions such as the pump housing, side pump cover, guiding valve, guide rail, pump shaft, eccentric wheel, fuel tank, belt pulley, belt, motor, chassis.
Existing product mainly has the following disadvantages:
1, the motion of pump is eccentric rotary mechanism, and existing product adopts single guiding valve eccentric wheel rotating machinery, and cannot accomplish dynamic balancing, product ubiquity vibrates large defect;
2, when existing product runs, the centrifugal force that is subject to of bearing is very large, and pump shaft rotates a circle and can only realize the process of air-breathing, exhaust, and energy consumption is comparatively large, there is the defects such as moving parts quick abrasion, working life is short;
3, because existing product vibration is very large, the rotating speed of pump is very limited, and general sliding valve vacuum pump rotating speed can only accomplish about 500rpm.In order to reduce the vibration of pump, pump head and motor must be arranged on a heavy chassis, and the occupation of land of such pump is just very large, and weight is very heavy.
Summary of the invention
The technical problem to be solved in the present invention is: based on the problems referred to above, the invention provides the dynamic balancing sliding valve vacuum pump of a kind of low vibration, low energy consumption.
The present invention solves the technological scheme that its technical problem adopts: a kind of dynamic balancing sliding valve vacuum pump, comprise the pump housing, pump shaft, the guiding valve eccentric mechanism be arranged on pump shaft, guiding valve eccentric mechanism comprises guide rail, eccentric wheel and guiding valve, pump housing inner chamber is separated into three separate chamber, chamber centered by middle chamber, central lumen side is closed end chamber near Pump Shaft Seal closed end, and near pump shaft external part is open end chamber;
Pump shaft is provided with three groups of guiding valve eccentric mechanisms, three groups of guiding valve eccentric mechanisms are installed in three separate chamber respectively, the eccentric length of central chamber, weight are respectively the eccentric wheel sum in two side cavity, the eccentric length in both sides closed end chamber and open end chamber and being equal in weight; Eccentric wheel in eccentric wheel in intermediate cavity and two side cavity all oppositely distributes in 180 °;
The pump housing housing at three separate chamber tops is provided with corresponding three groups of outlet valves; The motor be connected with pump shaft is installed above the pump housing.
Further, be connected with outlet pipe above outlet valve, outlet pipe top is provided with oil blocking cover.
Further, the side end of outlet pipe is relief opening, and exhaust ports is provided with oil gas and subtracts day with fog.
Further, the upper end that oil gas subtracts day with fog offers evacuation port, and lower end is provided with oil outlet, and oil outlet is connected with the spill port of fuel tank, oil gas is subtracted the oily recycling that day with fog traps.
Further, fuel tank has been installed at pump housing top, and fuel tank side is provided with fuel tank side cover, and tank side covers and is provided with visor window.
Further, the beam of vibrations is produced when being provided with bottom the pump housing for improving pump operation.
The invention has the beneficial effects as follows: adopt three guiding valve eccentric mechanisms, the cancelling out each other of centrifugal force and gravity when utilizing slide-valve gear to operate, thoroughly solves the running dynamic equilibrium problems of pump; During long cylinder air-breathing, the cylinder of losing heart of two sides is exhaled, and can realize dynamic balancing during pump High Rotation Speed, the supporting force of pump shaft also reduces greatly, and pump shaft rotates a circle and can realize secondary suction and exhaust process; Motor is directly installed on the top of oil-tank of sliding valve vacuum pump, not only saves the huge chassis of existing product, and floor space reduces more than 60%, and weight declines more than 50%.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is plan view of the present invention;
Fig. 2 is left view of the present invention;
Fig. 3 is right elevation of the present invention;
Fig. 4 is plan view of the present invention;
Fig. 5 is that the A-A of Fig. 1 is to sectional view;
Fig. 6 is that the B-B of Fig. 2 is to sectional view.
Wherein: 1. the pump housing, 2. guide rail, 3. guiding valve, 4. eccentric wheel, 5. pump shaft, 6. outlet valve, 7. valve pocket lid, 8. visor window, 9. fuel tank side cover, 10. fuel tank, 11. oil blocking covers, 12. outlet pipes, 13. pumping fluids, 14. suction ports, 15. oil pumps, 16. oil pump seats, 17. closed end end caps, 18. spill ports, 19. relief openings, 20. oil outlets, 21. oil gas subtract day with fog, 22. evacuation ports, 23. motor, 24. motor bedplates, 25. motor pulley, 26. v belt, 27. pump belt wheels, 28. belt wheel protection hoods, 29. rolling bearings, 30. mechanical seals, 31. bearing supports, 32. open end end caps, 33. base plates, 34. beams, 35. movable end covers.
Embodiment
The invention will be further described in conjunction with specific embodiments now, and following examples are intended to the present invention instead of limitation of the invention further are described.
A kind of dynamic balancing sliding valve vacuum pump as shown in figs. 1 to 6, comprise the pump housing 1, guide rail 2 is provided with in the guide rail hole of the pump housing 1, be provided with pump shaft 5 in the cavity of the pump housing 1, the pump housing 1 inner chamber is separated into three separate chamber, chamber centered by middle chamber, central lumen side is closed end chamber near pump shaft 5 closed end, near pump shaft 5 external part is open end chamber, and the outside closed end end cap 17 of closed end chamber seals, and the outside open end end cap 32 of open end chamber seals.
Pump shaft 5 is provided with three guiding valves 3 and three eccentric wheels 4, operationally state of equilibrium is in all the time in order to make pump, the eccentric wheel 4 of intermediate cavity is longer is long eccentric wheel, the eccentric wheel 4 of two side cavity is shorter is short eccentric wheel, long eccentric length is equal with two side short eccentric wheel sums with weight, the two short eccentric length in side be equal in weight.Two short eccentric wheels of long eccentric wheel and both sides all oppositely distribute in 180 ° on main shaft 5, and namely the short eccentric wheel of both sides is in same direction, and long eccentric wheel is positioned at the opposite direction of a short eccentric straight line.Match with certain interval and are installed together in the endoporus of guiding valve 3 and the outer ring of eccentric wheel 4, the upper end of guiding valve 3 is goed deep into certain interval in the elongated hole of guide rail 2, during pump operation, pump shaft 5 is with movable eccentric wheel 4 to rotate, and eccentric wheel 4 drives guide rail 2 in pump chamber, do rotation and rocks compound motion and realize air-breathing exhaust process.
Fuel tank 10 has been installed at the pump housing 1 top, and three chamber roof of the pump housing 1 are provided with 4 outlet valves, 6,4 outlet valves 6 and are divided into three groups, outlet valve 6 top is provided with valve pocket lid 7, valve pocket lid 7 top connects outlet pipe 12, and oil blocking cover 11 has been installed at outlet pipe 12 top, and oil blocking cover 11 is placed in fuel tank 10.
The side of the pump housing 1 is provided with suction port 14, and suction port 14 is connected with pump housing air aspiration cavity.Fuel tank 10 side surface upper part is provided with relief opening 19, and relief opening 19 is connected with outlet pipe 12.Relief opening 19 place is provided with oil gas and subtracts day with fog 21, oil gas subtracts day with fog 21 and the oil gas that slide valve pump is discharged can be separated automatically, air is discharged by the evacuation port 22 of upper end, and the oil trapped can be discharged to the spill port 18 of fuel tank 10 by pumping fluid 13 recycling again by the oil outlet 20 of lower end.
Fuel tank 10 top is provided with motor 23, motor 23 is fixedly mounted on fuel tank 10 top by motor bedplate 24, motor 23 goes out axle head and is provided with motor pulley 25, the axle head that goes out of pump shaft 5 is equipped with pump belt wheel 27, by v belt 26, motor 23 is connected with pump shaft 5, the belt wheel protection hood 28 of full-closed structure has been installed outside v belt 26.
The closed end chamber medial extremity of the pump housing 1 is equipped with dismountable movable end cover 35, outboard end is provided with closed end end cap 17, closed end end cap arranged outside oil pump seat 16, oil pump seat 16 is provided with oil pump 15, oil pump 15 and pump shaft 5 direct-connection transmission, the pumping fluid 13 in fuel tank 10 is transported to each kinematic pair of slide valve pump by oil pump 15 by oil pipe.The side of the pump housing 1 going out axle head of pump shaft 5 is provided with open end end cap 32, is provided with bearing support 31 outside open end end cap 32, is provided with rolling bearing 29 and mechanical seal 30 outside bearing support 31.
Fuel tank 10 side is provided with fuel tank side cover 9, fuel tank side cover 9 is provided with visor window 8.
Be provided with base plate 33 bottom the pump housing 1, base plate 33 installed below four for improving pump operation time produce the beam 34 of vibrations.
Sliding valve vacuum pump of the present invention changes the single of existing product or two guiding valve eccentric mechanisms, adopt three guiding valve eccentric mechanisms, when utilizing slide-valve gear to operate, centrifugal force and gravity cancels out each other, the running dynamic equilibrium problems of thorough solution pump, makes pump can realize the high running speed of 1000rpm and lower vibration like this.
Sliding valve vacuum pump of the present invention adopts three eccentric three cylinder mechanisms of guiding valve, during long cylinder air-breathing, the cylinder of losing heart of two sides is exhaled, and can realize dynamic balancing during pump High Rotation Speed, the supporting force of pump shaft also reduces greatly, and pump shaft rotates a circle and can realize secondary suction and exhaust process.
Sliding valve vacuum pump of the present invention is owing to possessing good dynamic balancing, and motor can be directly installed on the top of oil-tank of sliding valve vacuum pump, not only saves the huge chassis of existing product, and floor space reduces more than 60%, and weight declines more than 50%.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on specification, must determine its technical scope according to right.
Claims (6)
1. a dynamic balancing sliding valve vacuum pump, comprise the pump housing (1), pump shaft (5), the guiding valve eccentric mechanism be arranged on pump shaft (5), guiding valve eccentric mechanism comprises guide rail (2), eccentric wheel (4) and guiding valve (3), it is characterized in that: the described pump housing (1) inner chamber is separated into three separate chamber, chamber centered by middle chamber, central lumen side is closed end chamber near pump shaft (5) closed end, and near pump shaft (5) external part is open end chamber;
Pump shaft (5) is provided with three groups of guiding valve eccentric mechanisms, three groups of guiding valve eccentric mechanisms are installed in three separate chamber respectively, the length of the eccentric wheel (4) of central chamber, weight are respectively eccentric wheel (4) sum in two side cavity, the length of the eccentric wheel (4) in both sides closed end chamber and open end chamber and being equal in weight; Eccentric wheel (4) in intermediate cavity all oppositely distributes in 180 ° with the eccentric wheel (4) in two side cavity;
The pump housing (1) housing at three separate chamber tops is provided with corresponding three groups of outlet valves (6);
The pump housing (1) top is provided with the motor (23) be connected with pump shaft (5).
2. a kind of dynamic balancing sliding valve vacuum pump according to claim 1, is characterized in that: described outlet valve (6) top is connected with outlet pipe (12), and outlet pipe (12) top is provided with oil blocking cover (11).
3. a kind of dynamic balancing sliding valve vacuum pump according to claim 2, it is characterized in that: the side end of described outlet pipe (12) is relief opening (19), and relief opening (19) place is provided with oil gas and subtracts day with fog (21).
4. a kind of dynamic balancing sliding valve vacuum pump according to claim 1 or 3, it is characterized in that: the upper end that described oil gas subtracts day with fog (21) offers evacuation port (22), lower end is provided with oil outlet (20), oil outlet (20) is connected with the spill port (18) of fuel tank (10), oil gas is subtracted the oily recycling that day with fog (21) traps.
5. a kind of dynamic balancing sliding valve vacuum pump according to claim 1, it is characterized in that: fuel tank (10) has been installed at the described pump housing (1) top, fuel tank (10) side is provided with fuel tank side cover (9), fuel tank side cover (9) is provided with visor window (8).
6. a kind of dynamic balancing sliding valve vacuum pump according to claim 1, is characterized in that: the beam (34) producing vibrations when the described pump housing (1) bottom is provided with for improving pump operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510010317.8A CN104564680A (en) | 2015-01-08 | 2015-01-08 | Vacuum pump of dynamic balancing slide valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510010317.8A CN104564680A (en) | 2015-01-08 | 2015-01-08 | Vacuum pump of dynamic balancing slide valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104564680A true CN104564680A (en) | 2015-04-29 |
Family
ID=53081533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510010317.8A Pending CN104564680A (en) | 2015-01-08 | 2015-01-08 | Vacuum pump of dynamic balancing slide valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104564680A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912788A (en) * | 2015-05-20 | 2015-09-16 | 镇江市永泰汽车配件制造有限公司 | Slide valve vacuum pump valve transformation method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101354039A (en) * | 2008-08-04 | 2009-01-28 | 陈全玉 | Novel low-vibration low-energy consumption electric machine overhead type single-stage sliding valve vacuum pump |
| CN102434461A (en) * | 2011-11-17 | 2012-05-02 | 浙江神工真空设备制造有限公司 | Slide valve vacuum pump |
| CN202326253U (en) * | 2011-11-17 | 2012-07-11 | 浙江神工真空设备制造有限公司 | Spindle positioning structure of slide valve vacuum pump |
| CN202900664U (en) * | 2012-11-02 | 2013-04-24 | 台州力鑫真空设备有限公司 | Roots slide valve vacuum unit |
| CN203978830U (en) * | 2014-06-27 | 2014-12-03 | 浙江神工真空设备制造有限公司 | A kind of secondary sliding valve vacuum pump |
| CN204402893U (en) * | 2015-01-08 | 2015-06-17 | 江阴爱尔姆真空设备有限公司 | Dynamic balancing sliding valve vacuum pump |
-
2015
- 2015-01-08 CN CN201510010317.8A patent/CN104564680A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101354039A (en) * | 2008-08-04 | 2009-01-28 | 陈全玉 | Novel low-vibration low-energy consumption electric machine overhead type single-stage sliding valve vacuum pump |
| CN102434461A (en) * | 2011-11-17 | 2012-05-02 | 浙江神工真空设备制造有限公司 | Slide valve vacuum pump |
| CN202326253U (en) * | 2011-11-17 | 2012-07-11 | 浙江神工真空设备制造有限公司 | Spindle positioning structure of slide valve vacuum pump |
| CN202900664U (en) * | 2012-11-02 | 2013-04-24 | 台州力鑫真空设备有限公司 | Roots slide valve vacuum unit |
| CN203978830U (en) * | 2014-06-27 | 2014-12-03 | 浙江神工真空设备制造有限公司 | A kind of secondary sliding valve vacuum pump |
| CN204402893U (en) * | 2015-01-08 | 2015-06-17 | 江阴爱尔姆真空设备有限公司 | Dynamic balancing sliding valve vacuum pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912788A (en) * | 2015-05-20 | 2015-09-16 | 镇江市永泰汽车配件制造有限公司 | Slide valve vacuum pump valve transformation method |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150429 |
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| RJ01 | Rejection of invention patent application after publication |